j.c. miller remediation

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1 PO Box 1599 Channelview, TX 77530 281-862-5435 281-862-6143 fax J.C. Miller Remediation July 11, 2005 Mr. Chris Villarreal EPA Superfund Enforcement – Texas Section 1445 Ross Avenue, (6SF-AP) Dallas, Texas 75202-2733 Subject: Turtle Bayou Monthly Site Status Dear Chris: Pursuant to the changed status at the Turtle Bayou site, it would seem that an adjusted monthly report would be in order. This month’s (June) report will be a combination of: 1) Analytical data on disc for April and May, 2005, the final two months of operation at Turtle Bayou and 2) An update on site demobilization activities. Please advise if this format is acceptable for future updates and meets with your own reporting requirements. Should you have any question, please call me at (281) 862-5435. Sincerely, J.C. Miller Project Manager JM/km cc: William Rose Wes Brown David Guier Mark Collins Wes Brown Keith Westberry Chris Clodfelter Connelly, Baker, Wotring, and Jackson Luda Voskov Liberty Municipal Library

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PO Box 1599 Channelview, TX 77530 281-862-5435 281-862-6143 fax

J.C. Miller Remediation

July 11, 2005 Mr. Chris Villarreal EPA Superfund Enforcement – Texas Section 1445 Ross Avenue, (6SF-AP) Dallas, Texas 75202-2733 Subject: Turtle Bayou Monthly Site Status Dear Chris: Pursuant to the changed status at the Turtle Bayou site, it would seem that an adjusted monthly report would be in order. This month’s (June) report will be a combination of:

1) Analytical data on disc for April and May, 2005, the final two months of operation at Turtle Bayou and

2) An update on site demobilization activities. Please advise if this format is acceptable for future updates and meets with your own reporting requirements. Should you have any question, please call me at (281) 862-5435. Sincerely, J.C. Miller Project Manager JM/km cc: William Rose Wes Brown David Guier Mark Collins Wes Brown Keith Westberry Chris Clodfelter Connelly, Baker, Wotring, and Jackson Luda Voskov Liberty Municipal Library

Demobilization Progress at Turtle Bayou Site

June, 2005 The following is a synopsis of demobilization activities by area and schedule projection. West Road

• Dismantled the following equipment from the West Road area:

Electrical controllers Under ground and above ground wire and conduit Meters, switch gear and disconnects.

• Demobilized the following:

Well manifolds Laterals and trunk lines to Main Waste Area.

• Plugged and Abandon thirty three (33) wells in road and easement.

• Completed new MNA well CPT’s

• Staked slurry wall boundaries for surveying.

Easement

• Dismantled the following equipment in the Easement area:

Electrical controllers, Under ground, above ground wiring and conduit, Meters, switch gear, and disconnects Thermal oxidizer.

• Demobilized the following:

Well manifolds, laterals, and trunk lines to isolation valve north of County Road 126.

• Plugged and abandoned eighteen (18) ISTD electrodes and PS-25, damaged

during demobilization.

• Completed MNA well CPT’s. OTA MW10

• Dismantled the following equipment in the OTA/MW10 area:

Electrical controllers, Above ground, under ground wiring and conduit with spaced gutters to

MCC at Main Waste area

• 50% complete demobilizing well manifold, lateral and trunk lines.

Demobilization Progress at Turtle Bayou Site

June, 2005

• Completed MNA Well CPT’s. OTA MW45

• Dismantled the following equipment in the OTA/MW45 area:

Electrical controllers, Above ground, under ground wiring and conduit with spaced gutters to

MCC at Main Waste.

• Completed MNA Well CPT’s. Site Wide

• Dismantled the following equipment in other areas:

Meteorological station Oxygen station Ambient air sampling

Off-line

Vacuum pumps Thermal oxidizers

Site Wide – Still on Line

• Extraction and injection main waste and OTA parking lot

• Daily process control sampling – GWTP

• Monthly effluent sampling – GWTP

• All MNA well CPT’s complete Scheduled Projection for Site

• Begin MNA well drilling – July 18, 2005 This should complete 1st week of September Stable well analyses by September 16, 2005.

• Complete demobilization - August 31, 2005.

• Complete survey of “Affected Property” in each area for deed notice – September,

2005.

• Erect fencing and signs for affected property – September 2005.

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

DW-003JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: B53/MW-45

01/22/97 TB 01033 27000 < 1000 < 1000 < 2000 2900 < 1000 < 1000 < 1000 < 2000 < 1000 < 10000 < 1000 < 1000 8200 < 100003/22/97 TB 01899 75000 J 1200 5900 < 5000 7400 < 2500 < 2500 J 1400 < 5000 < 2500 < 25000 < 2500 J 1500 24000 < 250004/10/97 TB 02033 24000 J 320 < 1200 < 2500 2500 < 1200 < 1200 < 1200 < 2500 < 1200 < 12000 < 1200 < 1200 8200 < 120005/06/97 TB 02100 59 17000 < 500 1400 < 1000 1100 < 500 < 500 720 < 1000 < 500 E 48000 < 500 J 400 5400 < 50009/29/97 TB 02921 9200 J 120 830 < 500 1500 J 120 < 250 < 250 < 500 < 250 E 180000 < 250 250 3200 < 25011/29/97 TB 03360 3400 J 49 340 J 250 1300 220 J 66 < 200 < 100 < 200 < 200 < 100 510 < 100 J 120 1500 J 120

03/08/98 TB 03922 2800 < 100 350 < 200 1600 130 < 100 < 100 < 200 < 100 < 1000 < 100 J 68 1700 26006/03/98 TB 04681 4100 J 72 480 J 67 2100 240 140 < 200 < 100 < 200 < 200 J 44 540 E 53000 < 100 J 170 2100 J 9607/08/98 TB 04980 < 200 D 4100 100 490 < 400 1400 300 J 98 < 200 < 100 < 200 < 200 J 55 700 D 38000 < 100 J 96 2500 J 6108/08/98 TB 05426 < 1000 8900 J 200 900 < 2000 1400 500 < 500 < 1000 < 500 < 1000 < 1000 < 500 1100 44000 < 500 < 1000 3900 < 500

09/07/98 TB 05735 < 1000 8100 < 500 910 < 2000 1400 J 470 < 500 < 1000 < 500 < 1000 < 1000 < 500 1000 31000 < 500 < 1000 4500 < 50010/07/98 TB 06087 < 5000 2900 < 250 390 < 1000 540 < 250 < 250 < 500 < 250 < 500 < 500 < 250 J 270 20000 < 250 < 500 890 < 25011/02/98 TB 06329 < 5000 2100 < 250 250 < 1000 330 < 250 < 250 < 500 < 250 < 500 < 500 < 250 J 160 15000 < 250 < 500 J 630 < 25012/04/98 TB 06859 < 1000 D 2800 < 50 360 < 200 230 140 J 41 < 100 < 50 < 100 < 100 < 50 220 33000 < 50 < 100 590 < 50

01/09/99 TB 07179 < 500 D 2100 J 23 250 < 100 180 100 30 < 50 < 25 < 50 < 50 J 16 210 D 19000 J 12 < 50 640 < 2502/08/99 TB 07432 < 200 D 1600 24 260 < 40 190 110 39 < 20 < 10 < 20 < 20 16 220 E 27000 J 10 J 5 D 390 J 405/16/99 TB 08302 < 1000 1100 < 50 170 < 200 96 J 45 J 24 < 100 < 50 < 100 < 100 < 50 100 25000 < 50 < 100 310 < 5008/09/99 TB 09194 < 100 1500 J 20 230 < 50 71 78 J 21 < 50 < 50 < 500 < 50 J 13 190 7600 < 50 < 50 530 < 5010/18/99 TB 10082 < 100 D 2970 < 50 290 < 50 140 < 50 J 44 < 50 < 50 < 500 < 50 < 50 < 50 9100 < 50 < 50 370 < 5011/06/99 TB 10387 12 89 < 5 15 < 5 38 < 5 < 5 < 5 < 5 < 50 < 5 J 4 16 3800 < 5 56 15 51

03/15/00 TB 11393 < 10 D 620 < 5 97 45 200 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 D 3660 < 5 11 24 1005/11/00 TB 11731 < 10 D 590 < 5 44 < 5 120 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 1700 < 5 J 4 < 5 9

02/02/01 TB 13685 < 10 180 < 5 25 < 5 74 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 1200 < 5 < 5 8 804/30/01 TB 14252 < 10 220 < 5 30 < 5 37 < 5 < 5 < 5 < 5 < 50 < 5 < 5 8 360 < 5 < 5 31 J 608/13/01 TB 14947 < 50 100 < 25 J 21 < 25 < 25 < 25 < 25 < 25 < 25 < 250 < 25 < 25 < 25 3700 < 25 < 25 < 25 < 2511/01/01 TB 15452 < 10 150 < 5 28 < 5 23 J 4 J 4 < 5 < 5 < 50 < 5 < 5 10 660 < 5 < 5 29 < 5

02/20/02 TB 16491 < 10 120 < 5 33 < 5 25 J 3 J 3 < 5 < 5 < 50 < 5 < 5 9 710 < 5 < 5 22 J 305/09/02 TB 16972 J 4 160 J 2 30 < 5 6 8 7 < 5 < 5 < 50 < 5 < 5 10 J 76 < 5 < 5 9 < 508/11/02 TB 17680 < 10 120 J 1 29 < 5 J 5 6 7 < 5 < 5 < 50 < 5 < 5 14 < 100 J 2 < 5 38 < 5

03/14/03 TB 19011 < 10 19 < 5 45 < 5 22 J 2 J 5 < 5 < 5 < 50 J 2 < 5 J 2 D 3100 < 5 < 5 12 < 505/07/03 TB 19183 < 5 10 < 5 27 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 699 < 5 < 5 J 3 < 508/15/03 TB 19649 < 5 9 < 5 24 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 2740 < 5 < 5 J 3 < 511/12/03 TB 19993 < 5 5 < 5 14 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

02/19/04 TB 20414 < 5 < 5 < 5 7 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 420 < 5 < 5 < 2 < 508/25/04 TB 20962 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 52 < 5 < 5 < 2 < 5

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 1 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

DW-003JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: B53/MW-45

02/14/05 TB 21998 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 505/18/05 TB 22585 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 2 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

DW-007JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: B53/MW-45

02/04/97 TB 01630 100 < 5 41 < 10 73 28 < 5 3 < 10 < 5 6400 < 5 6 76 603/22/97 TB 01902 140 < 25 66 < 50 270 66 < 25 J 11 < 50 < 25 E 1200 < 25 J 16 150 J 1604/10/97 TB 02034 170 < 10 86 < 20 390 73 12 18 < 20 < 10 E 2400 < 10 46 150 6306/06/97 TB 02236 1809/29/97 TB 02924 J 110 < 250 < 250 < 500 < 250 < 250 < 250 < 250 < 500 < 250 < 2500 < 250 < 250 < 500 390

01/01/98 TB 03558 36 < 5 6 < 20 < 5 < 5 < 5 < 10 < 5 < 10 < 10 < 5 < 10 < 5 < 10 24 < 5

01/22/99 TB 07277 < 100 19 < 5 J 5 < 20 < 5 < 5 < 5 < 10 < 5 < 10 < 10 < 5 < 10 < 100 < 5 < 10 J 5 < 502/09/99 TB 07435 < 100 21 < 5 < 5 < 20 < 5 < 5 < 5 < 10 < 5 < 10 < 10 < 5 < 10 < 100 < 5 < 10 J 2 < 508/11/99 TB 09205 < 10 12 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 5

11/06/99 TB 10390 < 10 7 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 5

03/16/00 TB 11413 < 10 8 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 505/09/00 TB 11709 < 10 11 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 5

02/01/01 TB 13673 < 10 23 < 5 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 504/30/01 TB 14255 < 10 21 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 220 < 5 < 5 < 5 < 508/13/01 TB 14949 22 21 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 1200 < 5 < 5 < 5 < 511/01/01 TB 15455 < 10 J 3 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 5

02/18/02 TB 16485 < 10 39 < 5 J 4 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 505/16/02 TB 17011 < 10 35 < 5 J 4 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 508/11/02 TB 17683 < 10 28 < 5 J 4 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 J 1 < 5

03/13/03 TB 18997 < 10 44 < 5 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 J 4 < 505/07/03 TB 19184 < 5 32 < 5 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 221 < 5 < 5 J 2 < 508/15/03 TB 19650 < 5 27 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 440 < 5 < 5 < 2 < 511/11/03 TB 19978 < 5 31 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 764 < 5 < 5 J 2 < 5

02/19/04 TB 20417 < 5 33 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 589 < 5 < 5 J 2 < 508/27/04 TB 21013 < 5 31 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 2790 < 5 < 5 J 2 < 510/15/04 TB 21306 < 5 27 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 729 < 5 < 5 < 2 < 511/17/04 TB 21436 < 5 33 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 491 < 5 < 5 J 3 < 512/07/04 TB 21560 < 5 33 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 472 < 5 < 5 < 2 < 5

01/13/05 TB 21784 < 5 32 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 587 < 5 < 5 < 2 < 502/15/05 TB 22070 < 5 32 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 411 < 5 < 5 J 2 < 506/22/05 TB 22740 < 5 27 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 3 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

DW-008JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: B53/MW-45

01/29/97 TB 01068 760 14 < 50 < 100 450 < 50 < 50 57 < 100 < 50 < 500 < 50 81 460 1103/22/97 TB 01903 140 < 10 64 < 20 300 < 10 < 10 < 10 < 20 < 10 E 3800 < 10 13 110 3604/10/97 TB 02031 120 < 50 < 50 < 100 720 J 13 72 < 50 < 100 < 50 < 500 < 50 320 100 35006/06/97 TB 02238 < 10 12 < 10 < 10 < 20 88 < 10 98 J 7 < 20 < 10 590 < 10 160 < 20 82009/29/97 TB 02925 36 < 5 16 15 J 3 J 2 < 5 < 5 < 10 < 5 450 < 5 < 5 22 < 5

01/01/98 TB 03559 10 < 5 5 < 20 J 4 < 5 < 5 < 10 < 5 < 10 < 10 < 5 J 3 < 5 < 10 J 5 < 504/04/98 TB 04197 < 5 7 < 5 J 4 < 10 J 4 < 5 < 5 < 5 < 10 < 5 76 < 5 < 5 < 10 < 506/03/98 TB 04694 7 < 5 J 5 < 20 < 5 < 5 < 5 < 10 < 5 < 10 < 10 < 5 < 10 52 < 5 < 10 J 4 < 508/08/98 TB 05429 < 10 23 < 5 9 < 20 J 2 J 1 < 5 < 10 < 5 < 10 < 10 < 5 J 4 350 < 5 < 10 J 11 < 5

02/09/99 TB 07436 < 100 < 5 < 5 < 5 < 20 < 5 < 5 < 5 < 10 < 5 < 10 < 10 < 5 < 10 < 100 < 5 < 10 < 15 < 508/11/99 TB 09206 < 10 6 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 511/06/99 TB 10391 < 10 22 < 5 9 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 730 < 5 < 5 6 < 5

03/16/00 TB 11414 < 10 189 < 5 43 < 5 18 7 < 5 < 5 < 5 < 50 < 5 < 5 21 D 4900 < 5 < 5 87 < 505/11/00 TB 11733 < 10 50 < 5 15 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 6 660 < 5 < 5 23 < 5

02/01/01 TB 13674 < 10 27 < 5 8 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 270 < 5 < 5 8 < 504/30/01 TB 14256 < 10 11 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 508/13/01 TB 14950 J 7 6 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 410 < 5 < 5 < 5 < 511/01/01 TB 15456 < 10 28 < 5 J 4 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 5

02/20/02 TB 16495 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 505/16/02 TB 17012 < 10 J 2 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 508/11/02 TB 17684 < 10 J 1 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 5

03/14/03 TB 19013 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 5

02/19/04 TB 20418 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 508/27/04 TB 21014 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 510/15/04 TB 21307 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 511/17/04 TB 21437 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 512/07/04 TB 21561 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

01/13/05 TB 21785 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

02/15/05 TB 22048 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 505/18/05 TB 22586 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 130 < 5 < 5 < 2 < 5

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 4 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

DW-009JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: B53/MW-45

01/31/97 TB 01603 17 < 5 < 5 < 10 5 < 5 < 5 < 5 < 10 < 5 4500 < 5 3 < 10 < 5

03/16/00 TB 11405 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 5

02/18/02 TB 16486 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 5

03/13/03 TB 18998 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 508/19/03 TB 19659 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

02/19/04 TB 20419 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 508/30/04 TB 21037 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 510/15/04 TB 21308 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

11/17/04 TB 21438 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 512/07/04 TB 21562 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

01/13/05 TB 21786 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 502/15/05 TB 22071 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 506/22/05 TB 22742 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 5 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

DW-010JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: B53/MW-45

01/31/97 TB 01604 13 < 5 < 5 < 10 6 7 < 5 5 < 10 < 5 < 50 < 5 1 170 < 5

03/19/00 TB 11431 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 5

02/20/02 TB 16496 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 5

03/14/03 TB 19014 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 5

08/30/04 TB 21038 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 510/15/04 TB 21309 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 511/17/04 TB 21439 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 512/07/04 TB 21563 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

01/13/05 TB 21787 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 55 < 5 < 5 < 2 < 502/15/05 TB 22076 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 255 < 5 < 5 < 2 < 504/05/05 TB 22280 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 6 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

DW-012JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: B53/MW-45

02/06/97 TB 01635 23 2 < 5 < 10 3 < 5 < 5 < 5 < 10 < 5 < 50 < 5 1 57 < 5

03/15/00 TB 11400 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 5

02/20/02 TB 16498 < 10 44 < 5 11 < 5 41 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 J 37 < 5 < 5 < 5 < 5

03/14/03 TB 19023 < 10 D 280 < 5 43 < 5 150 5 < 5 < 5 < 5 < 50 < 5 < 5 14 1800 J 1 J 1 25 10

02/19/04 TB 20420 < 5 116 < 5 14 < 15 85 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 10500 < 5 < 5 < 2 < 508/30/04 TB 21039 < 5 18 < 5 < 5 < 15 34 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 4330 < 5 < 5 < 2 < 510/15/04 TB 21310 < 5 21 < 5 < 5 < 15 36 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 5740 < 5 < 5 < 2 < 511/17/04 TB 21440 < 5 24 < 5 < 5 < 15 37 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 7140 < 5 < 5 < 2 < 5

12/07/04 TB 21564 < 5 19 < 5 < 5 < 15 37 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 8510 < 5 < 5 < 2 < 5

01/13/05 TB 21788 < 5 21 < 5 < 5 < 15 44 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 3390 < 5 < 5 < 2 < 502/15/05 TB 22075 < 5 14 < 5 < 5 < 15 19 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 3780 < 5 < 5 < 2 < 505/18/05 TB 22588 < 5 11 < 5 < 5 < 15 18 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 1960 < 5 < 5 < 2 < 5

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 7 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

DW-013JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: B53/MW-45

02/06/97 TB 01636 2 < 5 < 5 33 3 < 5 < 5 < 5 < 10 < 5 670 < 5 1 24 1

03/15/00 TB 11399 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 5

02/20/02 TB 16499 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 1300 < 5 < 5 < 5 < 5

03/14/03 TB 19024 < 10 J 3 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 J 5 < 5 < 5 D 3200 < 5 < 5 < 5 < 508/19/03 TB 19661 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 2470 < 5 < 5 < 2 < 5

02/19/04 TB 20421 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 1010 < 5 < 5 < 2 < 508/30/04 TB 21040 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 490 < 5 < 5 < 2 < 510/15/04 TB 21311 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 113 < 5 < 5 < 2 < 5

11/17/04 TB 21441 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 1060 < 5 < 5 < 2 < 512/07/04 TB 21565 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 1350 < 5 < 5 < 2 < 5

01/13/05 TB 21789 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 2200 < 5 < 5 < 2 < 502/15/05 TB 22051 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 1060 < 5 < 5 < 2 < 504/05/05 TB 22282 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 1020 < 5 < 5 < 2 < 5

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 8 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

DW-014JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: B53/MW-45

12/12/97 TB 03459 60 < 10 150 39 320 44 17 11 44 < 10 E 26000 < 10 79 63 96

01/31/98 TB 03701 62 < 50 140 < 200 580 70 J 23 < 50 < 100 < 100 < 50 < 100 < 50 160 J 60 20005/08/98 TB 04493 19 27 < 5 94 B 15 190 26 16 J 5 < 10 < 5 E 6700 < 5 70 44 12007/08/98 TB 04982 600 J 23 < 25 61 < 100 200 < 25 J 14 J 14 < 25 < 50 < 50 < 25 < 50 6100 < 25 J 24 J 52 20010/07/98 TB 06089 850 25 < 5 180 47 63 < 5 50 120 < 5 < 10 < 10 < 5 < 10 D 33000 < 5 D 170 J 14 D 1300

01/03/99 TB 07103 J 94 13 < 5 27 < 20 54 < 5 7 J 3 < 5 < 10 J 3 < 5 < 10 17000 < 5 J 8 J 14 9502/09/99 TB 07437 560 24 < 5 170 D 260 130 < 5 57 64 < 5 < 10 < 10 < 5 < 10 E 150000 < 5 160 J 8 D 130008/11/99 TB 09207 663 210 < 5 D 750 170 D 600 36 D 460 22 16 J 46 < 5 < 5 9 D 48000 < 5 97 76 35011/06/99 TB 10392 210 110 < 10 340 < 10 280 12 270 < 10 < 10 < 100 < 10 < 10 < 10 15000 < 10 < 10 18 150

03/16/00 TB 11415 38 180 < 5 180 < 5 70 8 D 300 < 5 < 5 < 50 < 5 < 5 5 D 18000 < 5 < 5 14 46

05/11/00 TB 11734 41 40 < 5 62 < 5 12 < 5 67 < 5 < 5 < 50 < 5 < 5 < 5 D 8700 < 5 < 5 J 5 J 5

02/02/01 TB 13686 22 36 < 5 13 < 5 6 < 5 34 < 5 < 5 < 50 < 5 < 5 < 5 1600 < 5 < 5 < 5 < 504/30/01 TB 14257 < 10 14 < 5 17 < 5 < 5 < 5 17 < 5 < 5 < 50 < 5 < 5 < 5 700 < 5 < 5 < 5 < 508/13/01 TB 14951 < 10 94 < 5 26 < 5 < 5 < 5 D 260 < 5 < 5 < 50 < 5 < 5 < 5 920 < 5 < 5 < 5 < 511/01/01 TB 15457 < 10 33 < 5 12 < 5 J 3 < 5 50 < 5 < 5 < 50 < 5 < 5 < 5 800 < 5 < 5 < 5 < 5

02/20/02 TB 16500 < 10 25 < 5 14 < 5 J 3 J 2 54 < 5 < 5 < 50 J 2 < 5 < 5 1300 < 5 < 5 < 5 < 505/08/02 TB 16965 < 10 62 < 5 17 < 5 < 5 J 3 200 < 5 < 5 < 50 J 3 < 5 < 5 < 100 < 5 < 5 < 5 < 508/11/02 TB 17685 < 10 26 < 5 10 6 J 1 J 1 72 < 5 J 1 < 50 J 1 < 5 < 5 J 44 < 5 < 5 < 5 < 5

03/13/03 TB 18999 < 10 7 < 5 9 < 5 < 5 < 5 13 < 5 < 5 < 50 < 5 < 5 < 5 J 63 < 5 < 5 < 5 < 505/07/03 TB 19185 < 5 < 5 < 5 10 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 643 < 5 < 5 < 2 < 508/15/03 TB 19651 < 5 6 < 5 11 < 15 < 5 < 5 19 < 5 < 5 < 20 < 4 < 5 < 5 1100 < 5 < 5 < 2 < 511/11/03 TB 19979 < 5 < 5 < 5 8 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 1100 < 5 < 5 < 2 < 5

02/19/04 TB 20422 < 5 < 5 < 5 10 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 844 < 5 < 5 < 2 < 508/27/04 TB 21015 < 5 21 < 5 17 < 15 < 5 < 5 76 < 5 < 5 < 20 < 4 < 5 < 5 73 < 5 < 5 < 2 < 510/15/04 TB 21312 < 5 14 < 5 17 < 15 < 5 < 5 39 < 5 < 5 < 20 < 4 < 5 < 5 106 < 5 < 5 < 2 < 511/17/04 TB 21442 < 5 < 5 < 5 8 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 2410 < 5 < 5 < 2 < 512/07/04 TB 21566 < 5 < 5 < 5 8 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 2250 < 5 < 5 < 2 < 5

01/13/05 TB 21790 < 5 < 5 < 5 7 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 2030 < 5 < 5 < 2 < 5

02/15/05 TB 22072 < 5 < 5 < 5 7 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 1270 < 5 < 5 < 2 < 505/18/05 TB 22590 < 5 < 5 < 5 7 < 15 < 5 < 5 6 < 5 < 5 < 20 < 4 < 5 < 5 1240 < 5 < 5 < 2 < 5

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 9 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

DW-015JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: B53/MW-45

06/15/99 TB 08690 < 1000 85 < 50 130 210 1600 < 50 120 120 < 50 < 100 < 100 < 50 < 100 2400 < 50 560 J 49 840

01/15/00 TB 10924 < 10 180 < 5 D 180 < 5 < 5 < 5 D 150 < 5 J 4 < 50 < 5 < 5 J 4 < 100 < 5 < 5 7 < 503/02/00 TB 11275 < 10 D 400 < 5 D 830 < 5 < 5 J 4 D 610 < 5 18 < 50 6 < 5 17 < 100 < 5 < 5 16 < 503/16/00 TB 11406 < 10 D 570 < 5 D 1100 < 5 < 5 < 5 D 860 < 5 17 < 50 < 5 < 5 16 < 100 < 5 < 5 10 < 505/01/00 TB 11614 < 100 450 < 50 1000 < 50 < 50 < 50 340 < 50 < 50 < 500 < 50 < 50 < 50 < 1000 < 50 < 50 < 50 < 5007/04/00 TB 12087 < 50 520 < 25 930 < 25 < 25 < 25 68 < 25 < 25 < 250 < 25 < 25 J 16 < 500 < 25 < 25 < 25 < 2508/02/00 TB 12295 < 50 700 < 25 94 < 25 < 25 < 25 340 < 25 < 25 < 250 < 25 < 25 < 25 < 500 < 25 < 25 < 25 < 2509/07/00 TB 12574 < 50 920 < 25 120 < 25 < 25 < 25 430 < 25 < 25 < 250 < 25 < 25 J 22 < 500 < 25 < 25 < 25 < 2510/02/00 TB 12714 < 50 770 < 25 75 < 25 < 25 < 25 240 < 25 < 25 < 250 < 25 < 25 J 22 < 500 < 25 < 25 < 25 4011/02/00 TB 13076 < 50 870 < 25 43 < 25 < 25 < 25 < 25 < 25 < 25 < 250 < 25 < 25 J 23 < 500 < 25 < 25 < 25 < 25

12/04/00 TB 13349 < 50 480 < 25 41 < 25 < 25 < 25 < 25 < 25 < 25 < 250 < 25 < 25 < 25 < 500 < 25 < 25 < 25 < 25

01/03/01 TB 13463 < 20 350 < 10 24 < 10 < 10 < 10 29 < 10 < 10 < 100 < 10 < 10 < 10 < 200 < 10 < 10 < 10 < 1002/03/01 TB 13702 < 10 D 130 < 5 17 < 5 < 5 < 5 100 < 5 < 5 < 50 < 5 < 5 < 5 J 95 < 5 < 5 < 5 J 2

05/30/01 TB 14532 < 10 D 370 < 5 13 < 5 < 5 < 5 D 530 < 5 J 5 < 50 11 < 5 11 < 100 < 5 < 5 < 5 < 507/05/01 TB 14717 < 40 320 < 20 < 20 < 20 < 20 < 20 490 < 20 < 20 < 200 < 20 < 20 < 20 < 400 < 20 < 20 < 20 < 2008/08/01 TB 14885 < 20 340 < 10 < 10 < 10 < 10 < 10 160 < 10 < 10 < 100 < 10 < 10 < 10 D 4900 < 10 < 10 < 10 < 1009/05/01 TB 15198 < 10 D 290 < 5 10 < 5 < 5 < 5 130 < 5 < 5 < 50 9 < 5 5 < 100 < 5 < 5 < 5 < 510/04/01 TB 15298 < 10 200 < 5 10 < 5 < 5 < 5 54 < 5 < 5 < 50 6 < 5 < 5 190 < 5 < 5 J 3 < 510/30/01 TB 15429 J 5 220 < 5 10 < 5 < 5 < 5 150 < 5 < 5 < 50 7 < 5 < 5 190 < 5 < 5 J 3 < 512/05/01 TB 15845 < 10 D 340 < 5 11 < 5 < 5 < 5 D 420 < 5 < 5 < 50 10 < 5 J 5 330 < 5 < 5 < 5 < 5

01/02/02 TB 16072 < 10 190 < 5 13 < 5 < 5 < 5 96 < 5 < 5 < 50 J 4 < 5 < 5 350 < 5 < 5 J 3 < 501/25/02 TB 16247 < 10 170 < 5 13 < 5 J 3 < 5 70 < 5 < 5 < 50 6 < 5 < 5 560 < 5 < 5 J 4 < 503/28/02 TB 16743 < 10 D 270 < 5 13 J 4 < 5 J 2 D 290 < 5 < 5 < 50 10 < 5 J 2 130 < 5 < 5 < 5 < 504/30/02 TB 16880 < 10 D 220 < 5 14 < 5 J 2 J 3 140 < 5 < 5 < 50 7 < 5 J 3 1000 < 5 < 5 J 3 < 506/13/02 TB 17303 < 10 D 440 < 5 10 < 5 J 2 < 5 180 < 5 < 5 < 50 12 < 5 < 5 590 < 5 < 5 < 5 < 507/14/02 TB 17419 < 10 D 380 < 5 10 < 5 J 3 < 5 47 < 5 < 5 < 50 6 < 5 J 2 1400 < 5 < 5 < 5 < 508/10/02 TB 17662 < 10 D 360 < 5 12 < 5 J 2 J 2 45 < 5 < 5 < 50 9 J 1 < 5 D 1200 < 5 < 5 J 2 < 509/19/02 TB 17958 15 D 350 < 5 12 < 5 J 2 J 1 99 < 5 < 5 < 50 10 < 5 < 5 980 < 5 < 5 < 5 < 509/30/02 TB 17995 J 10 D 330 < 5 10 < 5 J 2 J 1 82 < 5 < 5 < 50 8 < 5 J 1 1600 < 5 < 5 < 5 < 511/26/02 TB 18321 10 140 < 5 45 < 5 J 3 J 2 10 < 5 < 5 < 50 J 4 < 5 < 5 D 15000 < 5 < 5 J 4 < 512/13/02 TB 18360 < 10 140 < 5 47 < 5 J 3 < 5 34 < 5 < 5 < 50 < 5 < 5 < 5 D 20000 < 5 < 5 < 5 < 5

01/03/03 TB 18404 < 10 110 < 5 16 < 5 J 1 < 5 57 < 5 < 5 < 50 J 3 < 5 < 5 D 2100 < 5 < 5 J 1 < 502/07/03 TB 18612 14 87 < 5 48 < 5 12 J 2 12 < 5 < 5 < 50 J 3 < 5 < 5 D 25000 < 5 < 5 < 5 J 2

04/15/03 TB 19093 < 5 69 < 5 49 < 15 6 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 29400 < 5 < 5 < 2 < 505/07/03 TB 19188 < 5 75 < 5 45 < 15 < 5 < 5 10 < 5 < 5 < 20 < 4 < 5 < 5 23700 < 5 < 5 < 2 < 506/06/03 TB 19347 < 5 85 < 5 34 < 15 < 5 < 5 23 < 5 < 5 < 20 < 4 < 5 < 5 18300 < 5 < 5 < 2 < 507/16/03 TB 19486 < 5 76 < 5 27 < 15 < 5 < 5 26 < 5 < 5 < 20 < 4 < 5 < 5 13900 < 5 < 5 < 2

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 10 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

DW-015JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: B53/MW-45

08/15/03 TB 19652 < 5 77 < 5 32 < 15 < 5 < 5 14 < 5 < 5 < 20 < 4 < 5 < 5 29000 < 5 < 5 < 2 < 509/09/03 TB 19783 < 5 69 < 5 35 < 15 < 5 < 5 5 < 5 < 5 < 20 < 4 < 5 < 5 30200 < 5 < 5 < 2 < 510/03/03 TB 19853 < 5 54 < 5 24 < 15 < 5 < 5 20 < 5 < 5 < 20 < 4 < 5 < 5 19600 < 5 < 5 < 2 < 512/02/03 TB 20103 22 68 < 5 34 < 15 < 5 < 5 16 < 5 < 5 < 20 J 4 < 5 < 5 41100 < 5 < 5 < 2 < 5

02/19/04 TB 20423 9 45 < 5 21 < 15 < 5 < 5 12 < 5 < 5 < 20 < 4 < 5 < 5 19400 < 5 < 5 < 2 < 504/12/04 TB 20670 < 5 60 < 5 24 < 15 < 5 < 5 16 < 5 < 5 < 20 J 4 < 5 < 5 33400 < 5 < 5 < 2 < 508/27/04 TB 21016 < 5 88 < 5 13 < 15 < 5 < 5 51 < 5 < 5 < 20 J 4 < 5 < 5 21800 < 5 < 5 < 2 < 510/15/04 TB 21313 < 5 88 < 5 13 < 15 < 5 < 5 44 < 5 < 5 < 20 J 4 < 5 < 5 32400 < 5 < 5 < 2 < 511/17/04 TB 21443 < 5 61 < 5 11 < 15 < 5 < 5 23 < 5 < 5 < 20 < 4 < 5 < 5 24100 < 5 < 5 < 2 < 512/07/04 TB 21567 < 5 72 < 5 11 < 15 < 5 < 5 25 < 5 < 5 < 20 J 4 < 5 < 5 34700 < 5 < 5 < 2 < 5

01/13/05 TB 21791 < 5 51 < 5 10 < 15 < 5 < 5 12 < 5 < 5 < 20 J 4 < 5 < 5 27900 < 5 < 5 < 2 < 502/15/05 TB 22073 < 5 42 < 5 8 < 15 < 5 < 5 10 < 5 < 5 < 20 < 4 < 5 < 5 15200 < 5 < 5 < 2 < 505/18/05 TB 22591 < 5 90 < 5 8 < 15 < 5 < 5 57 < 5 < 5 < 20 < 4 < 5 < 5 7950 < 5 < 5 < 2 < 5

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 11 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

DW-016JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: B53/MW-45

06/14/99 TB 08639 < 5000 9000 J 120 740 < 1000 3400 390 J 160 < 500 < 250 < 500 < 500 < 250 1500 37000 < 250 J 130 3900 J 200

01/07/00 TB 10897 < 10 54 < 5 65 < 5 < 5 < 5 76 < 5 < 5 < 50 < 5 < 5 < 5 J 26 < 5 < 5 < 5 < 501/15/00 TB 10925 < 10 61 < 5 71 < 5 < 5 < 5 85 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 503/02/00 TB 11276 < 10 110 < 5 130 < 5 < 5 < 5 120 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 5 < 503/04/00 TB 11307 < 10 110 < 5 130 < 5 < 5 < 5 120 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 5 < 503/16/00 TB 11404 < 10 140 < 5 190 < 5 < 5 < 5 150 < 5 8 < 50 < 5 < 5 < 5 < 100 < 5 < 5 5 < 504/06/00 TB 11496 < 10 180 < 5 200 < 5 < 5 < 5 120 < 5 8 < 50 < 5 < 5 J 5 < 100 < 5 < 5 6 < 505/01/00 TB 11615 < 10 140 < 5 200 < 5 < 5 < 5 45 < 5 < 5 < 50 < 5 < 5 < 5 380 < 5 < 5 J 4 < 507/04/00 TB 12088 < 10 69 < 5 32 < 5 < 5 < 5 9 < 5 < 5 < 50 < 5 < 5 < 5 J 77 < 5 < 5 < 5 < 508/02/00 TB 12296 < 100 92 < 5 27 < 10 < 5 < 5 10 < 5 < 10 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 10 < 15

09/07/00 TB 12575 < 10 170 < 5 24 < 5 20 < 5 J 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 510/02/00 TB 12715 < 10 160 < 5 14 < 5 54 < 5 11 < 5 < 5 < 50 < 5 < 5 J 3 2700 < 5 J 4 J 4 27

11/02/00 TB 13077 < 10 140 < 5 16 < 5 67 < 5 J 5 < 5 < 5 < 50 < 5 < 5 J 3 D 930 < 5 J 3 15 < 512/04/00 TB 13350 < 10 28 < 5 < 5 < 5 < 5 < 5 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 5

01/03/01 TB 13464 < 10 74 < 5 < 5 < 5 < 5 < 5 10 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 502/03/01 TB 13703 15 100 < 5 67 < 5 120 < 5 < 5 34 < 5 < 50 < 5 < 5 < 5 D 15000 < 5 9 7 20005/30/01 TB 14533 < 10 120 < 5 17 < 5 15 < 5 < 5 < 5 < 5 < 50 J 5 < 5 < 5 900 < 5 < 5 < 5 2607/05/01 TB 14718 33 120 < 5 29 < 5 150 < 5 < 5 < 5 < 5 < 50 J 5 < 5 < 5 D 11000 < 5 14 6 10908/08/01 TB 14886 39 96 < 5 24 < 5 D 250 < 5 < 5 9 < 5 < 50 < 5 < 5 < 5 D 3800 < 5 26 7 5709/05/01 TB 15199 200 79 < 10 21 < 10 D 500 < 10 < 10 24 < 10 < 100 < 10 < 10 < 10 D 27000 < 10 35 J 8 17410/04/01 TB 15299 J 17 J 10 < 10 < 10 < 10 120 < 10 < 10 < 10 < 10 < 100 < 10 < 10 < 10 3600 < 10 J 10 < 10 4010/30/01 TB 15430 370 78 < 10 14 < 10 D 780 < 10 < 10 90 < 10 < 100 < 10 < 10 < 10 D 34000 < 10 25 14 29412/05/01 TB 15846 350 82 < 5 24 < 5 D 840 7 < 5 130 < 5 < 50 6 < 5 J 3 D 49000 < 5 26 16 401

01/02/02 TB 16073 D 660 67 < 5 22 < 5 D 920 6 < 5 97 < 5 < 50 < 5 < 5 < 5 D 97000 < 5 21 12 36001/25/02 TB 16248 D 660 75 < 5 27 9 D 700 < 5 < 5 76 < 5 < 50 8 < 5 J 4 D 140000 < 5 21 16 29003/28/02 TB 16744 210 36 < 10 16 < 10 84 < 10 < 10 22 < 10 < 100 J 8 < 10 < 10 D 110000 < 10 J 4 J 6 11004/30/02 TB 16881 D 220 48 < 5 16 < 5 100 < 5 < 5 19 < 5 J 4 11 < 5 J 2 D 160000 < 5 J 3 7 7606/13/02 TB 17304 130 52 < 5 21 < 5 200 < 5 < 5 30 < 5 J 11 10 < 5 < 5 D 130000 < 5 29 11 17107/14/02 TB 17420 350 62 < 20 < 20 < 20 500 < 20 < 20 57 < 20 < 200 < 20 < 20 < 20 D 210000 < 20 31 J 12 18408/10/02 TB 17663 280 56 < 10 J 10 < 10 490 < 10 < 10 54 < 10 J 4 J 8 < 10 < 10 D 120000 < 10 16 12 12209/19/02 TB 17959 96 42 < 25 < 25 < 25 690 < 25 < 25 81 < 25 < 250 J 9 < 25 < 25 D 130000 < 25 39 J 9 375

09/30/02 TB 17996 860 34 < 25 < 25 < 25 690 < 25 < 25 74 < 25 < 250 J 5 < 25 < 25 D 140000 < 25 28 J 6 345

11/10/02 TB 18171 59 310 J 5 68 18 140 20 J 13 < 13 < 13 J 40 < 13 < 13 55 16000 < 13 15 90 1500

12/13/02 TB 18361 < 40 220 < 20 72 < 20 23 J 6 20 < 20 < 20 < 200 < 20 < 20 26 D 16000 < 20 < 20 70 1040

01/03/03 TB 18405 J 23 160 < 20 52 < 20 34 < 20 J 13 < 20 < 20 < 200 < 20 < 20 22 7800 < 20 < 20 57 148401/21/03 TB 18494 66 120 < 20 39 < 20 39 < 20 < 20 < 20 < 20 < 200 < 20 < 20 21 4000 < 20 < 20 51 71202/07/03 TB 18613 78 140 < 5 39 < 10 37 J 8 J 6 < 10 < 10 < 100 < 10 < 10 23 D 7200 < 10 J 3 55 706

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 12 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

DW-016JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: B53/MW-45

04/15/03 TB 19094 12 99 < 5 31 < 15 13 6 < 5 < 5 < 5 < 20 < 4 < 5 17 4520 < 5 < 5 30 20205/08/03 TB 19204 80 76 < 20 < 20 < 60 < 20 < 20 < 20 < 20 < 20 J 108 < 16 < 20 < 20 4060 < 20 20 J 20 113606/06/03 TB 19348 < 10 80 < 10 26 < 30 10 < 10 < 10 < 10 < 10 < 40 < 8 < 10 12 2400 < 10 < 10 J 18 54607/16/03 TB 19487 6 54 < 5 17 < 15 14 < 5 < 5 < 5 < 5 < 20 < 4 < 5 9 1980 < 5 < 5 1808/19/03 TB 19662 < 5 41 < 5 17 < 15 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 6 2660 < 5 < 5 < 2 5609/09/03 TB 19784 < 5 44 < 5 16 < 15 8 < 5 < 5 < 5 < 5 < 20 < 4 < 5 8 2660 < 5 < 5 11 1310/03/03 TB 19854 < 5 37 < 5 13 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 5 1850 < 5 < 5 10 1311/12/03 TB 19987 < 5 < 5 < 5 17 < 15 < 5 42 < 5 < 5 < 5 < 20 < 4 < 5 6 1810 < 5 < 5 J 9 1312/02/03 TB 20104 < 5 42 < 5 13 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 6 2770 < 5 < 5 12 < 5

02/19/04 TB 20424 < 5 26 < 5 11 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 179 < 5 < 5 J 6 16

04/12/04 TB 20671 < 5 25 < 5 9 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 1260 < 5 < 5 J 8 < 508/25/04 TB 20963 < 5 20 < 5 11 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 2540 < 5 < 5 J 6 < 5

02/14/05 TB 22001 < 5 14 < 5 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 1540 < 5 < 5 < 2 < 505/17/05 TB 22549 < 5 12 < 5 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 1270 < 5 < 5 < 2 < 5

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 13 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

DW-017JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: B53/MW-45

06/14/99 TB 08640 < 5000 D 26000 J 240 2300 < 1000 3100 1100 J 74 < 500 < 250 < 500 < 500 < 250 4100 D 150000 < 250 J 210 7900 < 250

01/07/00 TB 10896 < 10 110 < 5 D 240 < 5 < 5 < 5 67 < 5 7 < 50 < 5 < 5 < 5 1900 < 5 < 5 25 < 501/15/00 TB 10926 < 20 120 < 10 260 < 10 < 10 < 10 16 < 10 < 10 < 100 < 10 < 10 < 10 D 6000 < 10 < 10 19 < 1003/02/00 TB 11277 < 10 220 < 20 380 < 20 12 < 20 13 < 20 < 20 < 50 < 20 < 20 < 20 D 50000 < 20 < 20 62 < 2003/04/00 TB 11308 < 20 210 < 10 380 < 10 J 7 < 10 11 < 10 < 10 < 100 < 10 < 10 < 10 D 64000 < 10 < 10 46 < 1003/15/00 TB 11397 < 20 260 < 10 370 < 10 190 < 10 12 < 10 < 10 < 100 < 10 < 10 J 8 D 204000 < 10 58 66 1204/06/00 TB 11497 < 20 280 < 10 110 < 10 410 < 10 < 10 < 10 < 10 320 < 10 < 10 12 D 160000 < 10 150 84 10005/01/00 TB 11616 180 270 < 10 85 < 10 320 J 10 < 10 < 10 < 10 D 880 < 10 < 10 12 D 150000 < 10 200 120 77007/04/00 TB 12089 1400 210 < 20 < 20 < 20 510 < 20 < 20 < 20 < 20 < 200 < 20 < 20 < 20 D 170000 < 20 75 140 39608/02/00 TB 12297 640 160 < 10 17 < 10 310 < 10 < 10 < 10 < 10 < 100 < 10 < 10 10 51000 < 10 36 66 270

09/07/00 TB 12576 460 140 < 10 110 480 D 4100 < 10 < 10 420 < 10 870 < 10 < 10 < 10 D 69000 < 10 1300 38 1138

10/02/00 TB 12716 1475 J 110 < 125 < 125 < 125 D 1900 < 125 < 125 J 120 < 125 < 1250 < 125 < 125 < 125 D 150000 < 125 200 < 125 625

11/02/00 TB 13078 1600 110 < 25 40 < 25 D 920 < 25 < 25 130 < 25 < 250 < 25 < 25 < 25 D 77000 < 25 160 67 J 120

12/04/00 TB 13351 2000 120 < 10 < 10 < 10 420 < 10 < 10 32 < 10 < 100 < 10 < 10 < 10 D 85000 < 10 33 < 10 300

01/03/01 TB 13465 810 93 < 5 22 < 5 200 < 5 < 5 12 < 5 < 50 < 5 < 5 < 5 D 110000 < 5 18 12 20702/03/01 TB 13704 470 64 < 5 18 120 91 < 5 J 4 8 < 5 170 < 5 < 5 < 5 D 220000 < 5 7 7 9705/30/01 TB 14534 76 110 < 5 26 < 5 24 < 5 < 5 < 5 < 5 < 50 20 < 5 < 5 D 140000 < 5 < 5 30 1807/05/01 TB 14719 260 180 < 5 33 < 5 95 7 < 5 < 5 < 5 < 50 15 < 5 7 D 240000 < 5 < 5 44 6308/08/01 TB 14887 210 D 350 < 5 54 < 5 83 14 < 5 < 5 < 5 < 50 17 < 5 14 D 140000 < 5 < 5 78 4909/05/01 TB 15200 D 290 D 540 < 5 83 < 5 150 24 J 3 J 4 < 5 < 50 14 < 5 23 D 190000 < 5 6 140 6610/04/01 TB 15300 310 D 310 < 5 61 11 140 15 J 3 J 4 < 5 < 50 20 < 5 12 D 130000 < 5 6 120 6310/30/01 TB 15431 430 D 590 < 10 71 < 10 110 18 < 10 < 10 < 10 < 100 14 < 10 < 10 D 130000 < 10 < 10 210 5412/05/01 TB 15847 220 D 740 < 10 84 10 150 17 < 10 < 10 < 10 < 100 13 < 10 < 10 D 87000 < 10 < 10 210 70

01/02/02 TB 16074 D 550 D 670 < 10 64 < 10 160 J 10 < 10 < 10 < 10 < 100 11 < 10 < 10 D 270000 < 10 < 10 110 9001/25/02 TB 16249 380 D 420 < 10 52 15 100 J 8 < 10 < 10 < 10 < 100 19 < 10 < 10 D 240000 < 10 < 10 91 4203/28/02 TB 16745 170 660 < 25 65 < 25 110 J 11 < 25 < 25 < 25 < 250 J 21 < 25 < 25 D 280000 < 25 < 25 97 J 2504/30/02 TB 16882 85 700 < 25 67 < 25 89 J 12 < 25 < 25 < 25 < 250 J 23 < 25 < 25 D 390000 < 25 < 25 140 J 1006/13/02 TB 17305 < 50 980 < 25 83 < 25 120 J 14 < 25 < 25 < 25 < 250 J 16 < 25 < 25 D 170000 < 25 < 25 110 J 2007/14/02 TB 17421 130 1300 < 50 120 < 50 200 < 50 < 50 < 50 < 50 < 500 < 50 < 50 < 50 D 250000 < 50 < 50 130 J 4008/10/02 TB 17664 370 1200 < 25 99 < 25 320 J 10 < 25 J 5 < 25 < 250 J 13 < 25 < 25 D 140000 < 25 J 12 110 7009/19/02 TB 17960 100 1200 < 25 120 < 25 580 < 25 < 25 J 16 < 25 < 250 J 14 < 25 < 25 D 140000 < 25 J 20 130 95

09/30/02 TB 17997 420 D 970 < 20 79 < 20 430 J 11 < 20 J 11 < 20 < 200 J 14 < 20 < 20 D 140000 < 20 J 11 71 72

11/10/02 TB 18172 < 80 1500 J 16 120 < 40 190 80 < 40 < 40 < 40 < 400 < 40 < 40 220 66000 < 40 J 8 270 96

12/13/02 TB 18362 < 40 630 < 20 74 < 20 47 25 J 15 < 20 < 20 < 200 < 20 < 20 75 D 59000 < 20 < 20 170 250

01/03/03 TB 18406 < 40 380 < 20 52 < 20 31 J 17 J 14 < 20 < 20 < 200 < 20 < 20 48 D 23000 < 20 < 20 96 17201/21/03 TB 18495 < 20 180 < 10 < 10 < 10 J 9 11 < 10 < 10 < 10 < 100 < 10 < 10 29 D 8100 < 10 < 10 61 J 502/07/03 TB 18614 J 6 200 < 5 21 < 5 20 11 < 10 < 10 < 10 < 100 < 10 < 10 29 D 21000 < 10 < 10 65 J 8

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 14 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

DW-017JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: B53/MW-45

04/15/03 TB 19095 < 5 181 < 5 23 < 15 9 11 < 5 < 5 < 5 < 20 < 4 < 5 29 13700 < 5 < 5 46 1005/08/03 TB 19205 17 134 < 5 33 < 15 7 9 8 < 5 < 5 < 20 < 4 < 5 22 6180 < 5 < 5 33 7806/06/03 TB 19349 < 5 177 < 5 17 < 15 7 9 < 5 < 5 < 5 < 20 < 4 < 5 29 4570 < 5 < 5 43 < 507/16/03 TB 19488 < 5 129 < 5 12 < 15 6 9 < 5 < 5 < 5 < 20 < 4 < 5 23 2440 < 5 < 5 4008/19/03 TB 19663 < 5 110 < 5 16 < 15 < 5 7 < 5 < 5 < 5 < 20 < 4 < 5 17 9430 < 5 < 5 21 < 509/09/03 TB 19785 < 5 105 < 5 12 < 15 5 7 < 5 < 5 < 5 < 20 < 4 < 5 19 2400 < 5 < 5 25 < 510/03/03 TB 19855 < 5 79 < 5 12 < 15 < 5 5 < 5 < 5 < 5 < 20 < 4 < 5 12 4060 < 5 < 5 17 < 511/12/03 TB 19988 < 5 108 < 5 16 < 15 < 5 7 < 5 < 5 < 5 < 20 < 4 < 5 19 4980 < 5 < 5 22 < 512/02/03 TB 20105 < 5 110 < 5 10 < 15 < 5 8 < 5 < 5 < 5 < 20 < 4 < 5 21 2030 < 5 < 5 33 < 5

02/19/04 TB 20425 < 5 86 < 5 10 < 15 < 5 6 < 5 < 5 < 5 < 20 < 4 < 5 16 2100 < 5 < 5 25 < 5

08/25/04 TB 20964 < 5 91 < 5 9 < 15 < 5 6 < 5 < 5 < 5 < 20 < 4 < 5 17 1790 < 5 < 5 29 < 5

02/14/05 TB 22002 < 5 102 < 5 8 < 15 < 5 7 < 5 < 5 < 5 < 20 < 4 < 5 20 1290 < 5 < 5 34 < 505/17/05 TB 22550 < 5 79 < 5 8 < 15 < 5 5 < 5 < 5 < 5 < 20 < 4 < 5 14 2450 < 5 < 5 20 < 5

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 15 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

DW-018JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: B53/MW-45

06/14/99 TB 08641 < 1000 1400 < 50 150 < 200 J 30 J 43 < 50 < 100 < 50 < 100 < 100 < 50 110 30000 < 50 < 100 310 < 50

03/15/00 TB 11403 < 10 11 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 D 43500 < 5 < 5 16 < 5

02/20/02 TB 16501 11 J 4 < 5 < 5 < 5 J 1 < 5 < 5 < 5 < 5 < 50 8 < 5 < 5 D 68000 < 5 < 5 23 < 5

03/14/03 TB 19015 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 D 4200 < 5 < 5 < 5 < 508/15/03 TB 19653 < 5 11 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 17500 < 5 < 5 < 2 < 5

02/19/04 TB 20426 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 2550 < 5 < 5 < 2 < 508/25/04 TB 20965 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 3970 < 5 < 5 < 2 < 510/15/04 TB 21314 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 13300 < 5 < 5 < 2 < 5

11/22/04 TB 21504 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 15400 < 5 < 5 J 2 < 512/07/04 TB 21568 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 14900 < 5 < 5 < 2 < 5

01/13/05 TB 21792 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 798 < 5 < 5 < 2 < 502/15/05 TB 22074 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 11200 < 5 < 5 < 2 < 505/18/05 TB 22592 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 5060 < 5 < 5 < 2 < 5

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 16 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

DW-019JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: B53/MW-45

06/17/99 TB 08724 < 5000 D 15000 < 250 2000 < 1000 8600 940 640 < 500 < 250 < 500 < 500 < 250 2500 14000 < 250 1300 7900 < 250

01/07/00 TB 10895 < 10 150 < 5 170 < 5 < 5 < 5 210 < 5 < 5 < 50 < 5 < 5 6 < 100 < 5 < 5 < 5 < 501/15/00 TB 10927 < 10 130 < 5 130 < 5 < 5 < 5 180 < 5 < 5 < 50 < 5 < 5 J 5 < 100 < 5 < 5 < 5 < 502/21/00 TB 11264 < 10 56 < 5 91 < 5 < 5 < 5 85 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 503/02/00 TB 11278 < 10 160 < 5 220 < 5 < 5 < 5 180 < 5 < 5 < 50 < 5 < 5 7 < 100 < 5 < 5 < 5 < 503/04/00 TB 11309 < 20 130 < 10 250 < 10 < 10 < 10 210 < 10 < 10 < 100 < 10 < 10 J 5 < 200 < 10 < 10 < 10 < 1003/15/00 TB 11402 < 10 210 < 5 D 350 < 5 < 5 < 5 D 290 < 5 6 < 50 < 5 < 5 7 < 100 < 5 < 5 < 5 < 504/06/00 TB 11498 < 10 230 < 5 D 420 < 5 < 5 < 5 D 300 < 5 8 < 50 < 5 < 5 9 < 100 < 5 < 5 < 5 < 505/01/00 TB 11617 < 10 150 < 5 D 470 < 5 < 5 < 5 D 240 < 5 5 < 50 < 5 < 5 5 < 100 < 5 < 5 < 5 < 507/04/00 TB 12090 < 10 D 360 < 5 D 200 < 5 < 5 < 5 D 470 < 5 J 5 < 50 < 5 < 5 14 160 < 5 < 5 8 < 5

08/02/00 TB 12298 < 40 540 < 20 120 < 20 < 20 < 20 620 < 20 < 20 < 200 < 20 < 20 < 20 1900 < 20 < 20 24 < 2009/07/00 TB 12577 < 40 720 < 20 95 < 20 < 20 < 20 720 < 20 < 20 < 200 < 20 < 20 < 20 < 400 < 20 < 20 24 < 2010/02/00 TB 12717 < 40 640 < 0 52 < 0 J 8 < 20 580 < 0 < 0 < 0 < 0 < 0 J 20 1700 < 0 < 0 40 < 2011/02/00 TB 13079 < 40 810 < 20 < 20 < 20 < 20 < 20 770 < 20 < 20 < 200 < 20 < 20 J 20 < 400 < 20 < 20 38 < 2012/04/00 TB 13352 1500 390 < 10 50 < 10 34 16 58 < 10 < 10 < 100 < 10 < 10 42 < 200 < 10 < 10 88 26

01/03/01 TB 13466 2800 600 < 20 72 < 20 72 23 49 < 20 < 20 < 200 < 20 < 20 49 D 9300 < 20 < 20 1804 3202/03/01 TB 13705 78 D 460 < 5 61 17 50 36 270 < 5 6 < 50 8 < 5 41 D 41000 < 5 < 5 130 2605/30/01 TB 14535 < 200 950 < 100 < 100 120 2400 < 100 < 100 < 100 < 100 < 1000 < 100 < 100 < 100 D 160000 < 100 240 < 100 10007/17/01 TB 14720 < 100 970 < 50 200 210 1900 < 50 400 < 50 < 50 < 500 < 50 < 50 < 50 D 250000 < 50 200 83 7008/08/01 TB 14888 300 1400 < 50 55 130 1500 < 50 < 50 < 50 < 50 < 500 < 50 < 50 < 50 D 380000 < 50 190 < 50 21009/05/01 TB 15201 690 D 1400 < 50 < 50 < 50 790 < 50 < 50 < 50 < 50 < 500 < 50 < 50 < 50 D 160000 < 50 90 < 50 19010/04/01 TB 15301 150 1300 < 50 < 50 130 770 < 50 < 50 < 50 < 50 J 99 < 50 < 50 < 50 D 160000 < 50 100 < 50 12010/30/01 TB 15432 100 760 < 25 37 < 25 160 < 25 J 20 < 25 < 25 < 250 < 25 < 25 < 25 D 110000 < 25 < 25 < 25 8012/05/01 TB 15848 300 1200 < 50 61 370 430 < 50 < 50 < 50 < 50 J 100 < 50 < 50 < 50 D 290000 < 50 J 39 < 50 100

01/02/02 TB 16075 520 1400 < 50 < 50 D 6200 1700 < 50 < 50 < 50 < 50 2000 < 50 < 50 < 50 D 1200000 < 50 240 < 50 20001/25/02 TB 16250 510 1800 < 50 110 D 8800 1800 < 50 < 50 J 22 < 50 D 3400 50 < 50 < 50 D 980000 < 50 210 < 50 20003/28/02 TB 16746 430 1500 < 50 170 D 8100 5900 < 50 J 16 J 29 72 D 2800 59 < 50 < 50 D 950000 < 50 750 J 19 62004/30/02 TB 16883 320 690 < 25 290 D 8800 D 14000 < 25 J 12 35 120 D 3600 30 < 25 < 25 D 1300000 < 25 1000 51 58006/13/02 TB 17306 3700 J 140 < 200 < 200 2000 9300 < 200 < 200 < 200 J 150 J 1800 < 200 < 200 < 200 D 920000 < 200 1200 J 62 116007/14/02 TB 17422 630 J 100 < 100 J 74 440 2500 < 100 < 100 < 100 150 J 860 J 43 < 100 < 100 D 1300000 < 100 340 J 22 54008/10/02 TB 17665 450 300 < 50 140 1000 D 3600 < 50 < 50 J 25 78 660 J 32 < 50 < 50 D 880000 < 50 860 100 540

09/19/02 TB 17961 200 380 < 50 < 50 880 D 6700 < 50 < 50 88 120 2200 J 49 < 50 < 50 D 890000 < 50 1600 J 44 800

09/30/02 TB 17998 1300 330 < 50 < 50 460 D 5800 < 50 < 50 J 44 120 2300 J 45 < 50 < 50 D 880000 < 50 1400 J 24 790

11/10/02 TB 18173 J 80 1890 < 100 240 < 100 340 J 100 J 60 < 100 < 100 < 1000 < 100 < 100 240 35100 < 100 < 100 340 160

12/13/02 TB 18363 < 200 2000 < 100 360 < 100 110 J 76 J 93 < 100 < 100 < 1000 < 100 < 100 210 43000 < 100 J 35 480 1030

12/18/02 TB 18390 < 200 2400 < 100 320 140 140 J 80 J 60 < 100 < 100 < 1000 < 100 < 100 250 50000 < 100 < 100 600 76

01/03/03 TB 18407 170 1600 < 50 250 < 50 J 34 69 J 46 < 50 < 50 < 500 < 50 < 50 190 D 37000 < 50 < 50 310 290

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 17 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

DW-019JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: B53/MW-45

02/07/03 TB 18615 J 94 1400 J 14 170 J 41 170 68 J 16 < 50 < 50 < 500 < 50 < 50 180 D 35000 < 50 < 50 310 J 6004/15/03 TB 19096 35 890 < 25 130 < 75 < 25 30 < 25 < 25 < 25 < 100 < 20 < 25 100 44300 < 25 < 25 90 < 2505/08/03 TB 19206 136 492 < 20 172 748 56 20 32 < 20 < 20 304 < 16 < 20 48 55000 < 20 24 44 47206/06/03 TB 19350 < 25 925 < 25 85 < 75 55 35 < 25 < 25 < 25 < 100 < 20 < 25 100 28500 < 25 < 25 110 < 2507/16/03 TB 19489 < 20 620 < 20 68 < 60 28 28 < 20 < 20 < 20 < 80 < 16 < 20 80 21500 < 20 < 20 92 < 2008/19/03 TB 19664 < 10 504 < 10 59 < 30 17 21 < 10 < 10 < 10 < 40 < 8 < 10 60 20600 < 10 < 10 60 1209/09/03 TB 19786 < 20 544 < 20 64 < 60 32 24 < 20 < 20 < 20 < 80 < 16 < 20 68 32700 < 20 < 20 64 < 2010/03/03 TB 19856 < 10 444 < 10 52 < 30 18 22 < 10 < 10 < 10 < 40 < 8 < 10 58 26000 < 10 < 10 70 < 1011/12/03 TB 19989 < 10 474 < 10 58 < 30 < 10 22 < 10 < 10 < 10 < 40 < 8 < 10 60 21500 < 10 < 10 52 < 1012/02/03 TB 20106 < 10 510 < 10 56 < 30 18 24 < 10 < 10 < 10 < 40 < 8 < 10 64 32400 < 10 < 10 94 < 10

02/19/04 TB 20427 10 322 < 10 48 < 30 14 14 < 10 < 10 < 10 < 40 < 8 < 10 37 19900 < 10 < 10 51 36

04/12/04 TB 20672 44 304 < 10 33 < 30 10 15 < 10 < 10 < 10 < 40 < 8 < 10 42 52300 < 10 < 10 70 < 1005/18/04 TB 20725 < 10 265 < 10 35 < 30 < 10 12 < 10 < 10 < 10 < 40 < 8 < 10 29 50100 < 10 < 10 38 < 1006/23/04 TB 20791 < 10 347 < 10 52 85 486 12 12 < 10 < 10 < 40 < 8 < 10 19 92700 < 10 37 71 < 1008/25/04 TB 20966 < 10 285 < 10 35 < 30 11 13 < 10 < 10 < 10 < 40 < 8 < 10 32 30200 < 10 < 10 53 < 1010/15/04 TB 21315 5 258 < 5 39 < 15 6 14 < 5 < 5 < 5 < 20 < 4 < 5 32 19500 < 5 < 5 49 < 511/17/04 TB 21444 < 10 328 < 10 33 < 30 < 10 15 < 10 < 10 < 10 < 40 < 8 < 10 40 26600 < 10 < 10 87 < 1012/07/04 TB 21569 5 227 < 5 34 < 15 18 10 < 5 < 5 < 5 < 20 < 4 < 5 23 14300 < 5 < 5 43 J 2

01/13/05 TB 21793 < 5 261 < 5 32 < 15 8 12 < 5 < 5 < 5 < 20 < 4 < 5 31 23900 < 5 < 5 48 < 502/14/05 TB 22003 < 5 232 < 5 24 < 15 10 11 < 5 < 5 < 5 < 20 < 4 < 5 26 23800 < 5 < 5 54 < 504/05/05 TB 22286 < 5 226 < 5 23 < 15 10 12 < 5 < 5 < 5 < 20 < 4 < 5 31 15300 < 5 < 5 56 < 5

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 18 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

DW-021JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: B53/MW-45

11/10/02 TB 18174 510 6000 84 890 < 5 2200 440 220 J 2 10 < 50 < 5 29 1040 22000 31 38 1800 530

01/21/03 TB 18491 < 80 1400 J 23 210 < 80 160 94 J 32 < 80 < 80 < 800 < 80 < 80 210 3400 < 80 < 80 480 J 3202/07/03 TB 18616 < 50 1500 J 22 190 J 31 160 97 J 32 < 50 < 50 < 500 < 50 < 50 220 2800 < 50 < 50 520 J 3004/15/03 TB 19097 64 856 < 20 136 < 60 88 56 < 20 < 20 < 20 < 80 < 16 < 20 128 3800 < 20 < 20 212 < 2005/08/03 TB 19207 664 322 < 20 100 < 60 84 40 < 20 < 20 < 20 < 80 < 16 < 20 100 3030 < 20 28 132 6006/06/03 TB 19351 45 1190 < 25 120 < 75 85 65 < 25 < 25 < 25 < 100 < 20 < 25 180 1870 < 25 < 25 230 < 2507/16/03 TB 19490 35 855 < 25 100 < 75 75 55 < 25 < 25 < 25 < 100 < 20 < 25 130 1480 < 25 < 25 220 < 2508/19/03 TB 19665 150 885 < 25 110 < 75 65 50 < 25 < 25 < 25 < 100 < 20 < 25 120 3190 < 25 < 25 145 < 2509/09/03 TB 19787 < 25 825 < 25 90 < 75 85 55 < 25 < 25 < 25 < 100 < 20 < 25 135 3490 < 25 < 25 170 < 2510/03/03 TB 19857 < 25 735 < 25 80 < 75 55 45 < 25 < 25 < 25 < 100 < 20 < 25 105 2440 < 25 < 25 150 < 25

11/12/03 TB 19990 40 840 < 25 100 < 75 40 50 < 25 < 25 < 25 < 100 < 20 < 25 135 3870 < 25 < 25 145 < 2512/02/03 TB 20107 < 25 785 < 25 90 < 75 65 50 < 25 < 25 < 25 < 100 < 20 < 25 120 6340 < 25 < 25 170 < 25

02/19/04 TB 20428 157 636 < 10 78 < 30 13 36 < 10 < 10 < 10 < 40 < 8 < 10 83 4170 < 10 < 10 111 J 4

04/12/04 TB 20673 30 615 < 25 70 < 75 30 35 < 25 < 25 < 25 < 100 < 20 < 25 88 9340 < 25 < 25 120 < 2505/18/04 TB 20726 < 20 605 < 20 72 < 60 < 20 33 < 20 < 20 < 20 < 80 < 16 < 20 84 9230 < 20 < 20 104 < 2006/23/04 TB 20792 64 242 < 5 30 < 15 6 11 5 < 5 < 5 < 20 < 4 < 5 36 2400 < 5 < 5 28 < 508/25/04 TB 20967 < 5 574 8 80 < 15 37 39 7 < 5 < 5 < 20 < 4 5 92 8540 < 5 < 5 163 < 5

02/14/05 TB 22004 < 20 669 < 20 65 < 60 34 37 < 20 < 20 < 20 < 80 < 16 < 20 88 8410 < 20 < 20 142 < 2005/17/05 TB 22552 < 10 472 < 10 63 < 30 35 28 < 10 < 10 < 10 < 40 < 8 < 10 71 7940 < 10 < 10 107 < 10

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 19 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

DW-022JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: B53/MW-45

11/10/02 TB 18175 210 4700 26 940 25 2000 190 240 7 12 < 50 < 5 10 570 26000 11 98 820 230

01/21/03 TB 18492 < 50 690 < 50 140 < 50 75 J 46 J 33 < 50 < 50 < 500 < 50 < 50 110 6000 < 50 < 50 280 J 1002/07/03 TB 18617 < 40 600 J 9 120 < 20 34 38 31 < 20 < 20 < 200 < 20 < 20 90 4600 < 20 < 20 260 J 904/15/03 TB 19098 540 1140 < 25 180 < 75 200 80 50 < 25 < 25 < 100 < 20 < 25 195 8330 < 25 < 25 405 13505/08/03 TB 19208 188 262 < 10 110 < 30 40 18 46 < 10 < 10 < 40 < 8 < 10 42 3800 < 10 < 10 68 7806/06/03 TB 19352 < 10 308 < 10 58 < 30 24 16 26 < 10 < 10 < 40 < 8 < 10 46 1440 < 10 < 10 76 2607/16/03 TB 19491 26 209 < 5 46 < 15 53 14 17 < 5 < 5 < 20 < 4 < 5 35 2410 < 5 < 5 75 4908/19/03 TB 19666 38 150 < 5 45 < 15 8 8 15 < 5 < 5 < 20 < 4 < 5 21 3650 < 5 < 5 34 4009/09/03 TB 19788 6 156 < 5 41 < 15 25 11 13 < 5 < 5 < 20 < 4 < 5 25 4120 < 5 < 5 < 2 910/03/03 TB 19858 9 139 < 5 40 < 15 13 9 13 < 5 < 5 < 20 < 4 < 5 20 3110 < 5 < 5 35 8

11/12/03 TB 19991 11 138 < 5 43 < 15 9 8 16 < 5 < 5 < 20 < 4 < 5 21 2240 < 5 < 5 30 < 512/02/03 TB 20108 8 141 < 5 44 < 15 43 11 17 < 5 < 5 < 20 < 4 < 5 22 5780 < 5 < 5 47 5

02/19/04 TB 20429 37 111 < 5 35 < 15 < 5 7 12 < 5 < 5 < 20 < 4 < 5 15 1820 < 5 < 5 29 9

04/12/04 TB 20674 11 176 < 5 37 < 15 26 12 9 < 5 < 5 < 20 < 4 < 5 27 7680 < 5 < 5 57 < 505/18/04 TB 20727 22 168 < 5 35 < 15 5 9 8 < 5 < 5 < 20 < 4 < 5 22 6880 < 5 < 5 37 < 506/23/04 TB 20793 6 172 < 5 76 < 15 106 10 29 < 5 < 5 < 20 < 4 < 5 19 15300 < 5 < 5 47 < 507/23/04 TB 20894 6 136 < 5 37 < 15 12 7 10 < 5 < 5 < 20 < 4 < 5 16 5650 < 5 < 5 30 < 508/25/04 TB 20968 < 5 132 < 5 39 < 15 14 8 10 < 5 < 5 < 20 < 4 < 5 16 5590 < 5 < 5 34 < 5

02/14/05 TB 22005 < 5 129 < 5 27 J 22 11 7 7 < 5 < 5 < 20 < 4 < 5 15 5630 < 5 < 5 35 < 505/17/05 TB 22553 < 5 110 < 5 24 < 15 8 6 5 < 5 < 5 < 20 < 4 < 5 13 5210 < 5 < 5 27 < 5

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 20 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

DW-023JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: B53/MW-45

11/10/02 TB 18176 39 2300 24 190 < 5 560 100 52 J 2 6 < 50 < 5 9 260 9500 9 50 440 96

01/21/03 TB 18493 370 630 < 50 120 < 50 240 J 40 J 26 < 50 < 50 < 500 < 50 < 50 110 6600 < 50 < 50 280 19002/07/03 TB 18618 260 810 < 50 120 < 50 230 54 J 28 < 50 < 50 < 500 < 50 < 50 140 7300 < 50 < 50 350 17004/15/03 TB 19099 160 478 < 13 80 < 38 133 33 J 15 < 13 < 13 < 50 < 10 < 13 83 8390 < 13 < 13 143 19805/08/03 TB 19209 180 530 < 25 70 < 75 75 35 < 25 < 25 < 25 < 100 < 20 < 25 100 6540 < 25 < 25 150 15006/06/03 TB 19353 78 450 < 10 64 < 30 72 26 20 < 10 < 10 < 40 < 8 < 10 72 3880 < 10 < 10 110 10007/16/03 TB 19492 88 308 < 10 40 < 30 86 20 10 < 10 < 10 < 40 < 8 < 10 54 1280 < 10 < 10 108 2608/19/03 TB 19667 42 188 < 5 36 < 15 89 13 11 < 5 < 5 < 20 < 4 < 5 32 1770 < 5 < 5 53 2309/09/03 TB 19789 6 205 < 5 32 < 15 45 14 10 < 5 < 5 < 20 < 4 < 5 36 1400 < 5 < 5 57 910/03/03 TB 19859 5 163 < 5 31 < 15 25 10 12 < 5 < 5 < 20 < 4 < 5 28 1300 < 5 6 45 2

11/12/03 TB 19992 8 260 7 38 < 15 64 20 11 < 5 < 5 < 20 < 4 < 5 60 818 < 5 < 5 77 7

12/02/03 TB 20109 < 5 262 5 40 < 15 88 18 14 < 5 < 5 < 20 < 4 < 5 49 2430 < 5 < 5 92 8

02/19/04 TB 20430 12 141 < 5 47 < 15 15 J 8 17 < 5 < 5 < 20 < 4 < 5 25 1030 < 5 5 44 14

04/12/04 TB 20675 < 5 164 < 5 39 < 15 20 11 16 < 5 < 5 < 20 < 4 < 5 28 3390 < 5 < 5 57 < 505/18/04 TB 20728 < 5 177 < 5 35 < 15 16 11 12 < 5 < 5 < 20 < 4 < 5 30 1280 < 5 < 5 64 < 506/23/04 TB 20794 8 211 < 5 407 < 15 959 30 174 < 5 < 5 < 20 J 6 < 5 25 106000 < 5 20 90 2207/23/04 TB 20895 < 5 141 < 5 24 < 15 49 9 8 < 5 < 5 < 20 < 4 < 5 25 2760 < 5 < 5 51 < 508/25/04 TB 20969 < 5 132 < 5 19 < 15 39 9 6 < 5 < 5 < 20 < 4 < 5 22 1520 < 5 < 5 50 < 5

02/14/05 TB 22006 < 5 126 < 5 23 < 15 11 8 8 < 5 < 5 < 20 < 4 < 5 19 5370 < 5 < 5 44 < 505/17/05 TB 22554 < 5 121 < 5 25 < 15 27 7 8 < 5 < 5 < 20 < 4 < 5 18 8520 < 5 < 5 35 < 5

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 21 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

MW-017JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: B53/MW-45

03/05/96 TB 01534 < 100 < 100 1800 < 200 350 2200 < 100 86 < 200 < 100 < 1000 < 100 < 100 < 200 < 100

05/12/98 TB 04543 < 100 < 100 < 100 1900 B 660 640 2400 < 100 < 100 < 200 < 100 J 380 < 100 < 100 < 200 < 10009/17/98 TB 05851 < 10 42 < 5 1300 < 20 < 5 140 1200 < 10 14 < 10 < 10 < 5 31 J 15 < 5 < 10 20 < 5

01/03/99 TB 07104 < 100 100 9 D 2100 < 20 14 140 D 1600 < 10 14 < 10 < 10 < 5 37 160 J 3 < 10 59 < 502/14/99 TB 07484 < 100 120 8 D 2100 < 20 34 150 D 1500 < 10 14 < 10 < 10 < 5 33 110 J 3 < 10 76 < 508/11/99 TB 09208 < 10 200 8 D 1500 < 5 57 160 D 940 < 5 14 J 4 < 5 < 5 36 720 J 4 < 5 170 < 5

02/01/00 TB 11065 < 50 110 < 25 870 < 25 < 25 97 850 < 25 < 25 < 250 < 25 < 25 27 < 500 < 25 < 25 73 < 2503/18/00 TB 11426 < 10 130 7 D 760 < 5 < 5 120 D 840 < 5 9 < 50 < 5 < 5 25 < 100 < 5 < 5 57 < 5

02/01/01 TB 13676 < 20 96 < 10 260 < 10 13 32 240 < 10 < 10 < 100 < 10 < 10 J 10 < 200 < 10 < 10 80 < 1008/14/01 TB 14955 < 10 90 < 5 250 < 5 < 5 29 200 < 5 J 3 < 50 < 5 < 5 10 1000 < 5 < 5 33 < 5

02/18/02 TB 16470 < 10 82 < 5 45 < 5 < 5 21 160 < 5 < 5 < 50 < 5 < 5 9 < 100 < 5 < 5 J 4 < 505/08/02 TB 16966 < 10 82 < 5 < 5 < 5 < 5 15 110 < 5 < 5 < 50 < 5 < 5 8 < 100 < 5 < 5 < 5 < 508/23/02 TB 17762 < 10 87 < 5 J 2 < 5 < 5 14 99 < 5 < 5 < 50 < 5 < 5 11 < 100 J 1 < 5 < 5 < 5

03/13/03 TB 19006 < 10 140 < 5 < 5 < 5 < 5 10 46 < 5 < 5 < 50 < 5 < 5 15 < 100 < 5 < 5 < 5 < 508/19/03 TB 19669 < 5 33 < 5 < 5 < 15 < 5 < 5 15 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

02/19/04 TB 20431 < 5 37 < 5 < 5 < 15 < 5 < 5 14 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 508/30/04 TB 21041 < 5 20 < 5 6 < 15 < 5 < 5 8 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 510/15/04 TB 21316 < 5 29 < 5 5 < 15 < 5 < 5 10 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 511/17/04 TB 21445 < 5 41 < 5 12 < 15 < 5 < 5 22 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 J 2 < 512/07/04 TB 21570 < 5 33 < 5 16 < 15 < 5 < 5 28 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 J 3 < 5

01/13/05 TB 21794 < 5 39 < 5 12 < 15 < 5 < 5 18 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 502/15/05 TB 22046 < 5 42 < 5 10 < 15 < 5 < 5 15 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 505/17/05 TB 22555 < 5 26 < 5 19 < 15 < 5 < 5 21 < 5 < 5 < 20 < 4 < 5 < 5 604 < 5 < 5 < 2 < 5

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 22 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

MW-018JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: B53/MW-45

02/14/99 TB 07487 < 100 < 5 < 5 < 5 < 20 < 5 < 5 < 5 < 10 < 5 < 10 < 10 < 5 < 10 < 100 < 5 < 10 < 15 < 5

03/18/00 TB 11427 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 5

02/01/01 TB 13677 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 508/14/01 TB 14956 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 J 83 < 5 < 5 < 5 < 511/16/01 TB 15683 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 5

02/18/02 TB 16471 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 505/08/02 TB 16967 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 508/23/02 TB 17763 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 5

03/13/03 TB 19007 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 508/19/03 TB 19670 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

02/19/04 TB 20432 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 74 < 5 < 5 < 2 < 508/30/04 TB 21042 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 510/15/04 TB 21321 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 511/17/04 TB 21449 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 512/07/04 TB 21571 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

01/13/05 TB 21795 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 502/15/05 TB 22047 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 506/21/05 TB 22736 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 23 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

MW-035JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: B53/MW-45

03/01/01 TB 13952 < 10 17 < 5 8 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 61 < 508/12/01 TB 14939 < 10 26 < 5 11 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 120 < 5 < 5 14 < 511/16/01 TB 15684 < 10 19 < 5 10 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 350 < 5 < 5 92 < 5

02/16/02 TB 16462 < 10 20 < 5 10 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 180 < 5 < 5 37 < 505/29/02 TB 17152 < 10 24 < 5 15 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 23 < 509/05/02 TB 17869 < 10 19 < 5 11 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 340 < 5 < 5 26 < 5

03/04/03 TB 18890 < 10 23 < 5 12 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 150 < 5 < 5 33 < 5

04/13/04 TB 20676 < 5 27 < 5 16 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 26 < 505/18/04 TB 20729 < 5 22 < 5 15 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 19 < 5

06/23/04 TB 20795 < 5 20 < 5 13 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 13 < 5

05/18/05 TB 22593 < 5 28 < 5 18 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 21 < 5

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 24 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

MW-037JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: B53/MW-45

02/05/96 TB 01812 5 4 < 10 < 5 < 5 < 10 < 50 < 5 < 10 < 5

02/14/99 TB 07488 < 100 J 4 < 5 < 5 < 20 < 5 < 5 < 5 < 10 < 5 < 10 < 10 < 5 < 10 < 100 < 5 < 10 < 15 < 5

03/18/00 TB 11428 < 10 15 < 5 11 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 5

02/01/01 TB 13678 < 10 21 < 5 9 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 508/14/01 TB 14958 < 10 23 < 5 9 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 130 < 5 < 5 < 5 < 5

02/18/02 TB 16473 < 10 11 < 5 J 4 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 505/08/02 TB 16968 < 10 25 < 5 9 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 508/23/02 TB 17765 < 10 15 < 5 6 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 5

03/14/03 TB 19017 < 10 21 < 5 7 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 950 < 5 < 5 < 5 < 508/19/03 TB 19672 < 5 15 < 5 7 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 1990 < 5 < 5 < 2 < 5

08/30/04 TB 21043 < 5 7 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 1800 < 5 < 5 < 2 < 510/15/04 TB 21317 < 5 6 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 994 < 5 < 5 < 2 < 511/17/04 TB 21446 < 5 7 < 5 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 2910 < 5 < 5 < 2 < 512/07/04 TB 21572 < 5 7 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 2960 < 5 < 5 < 2 < 5

01/13/05 TB 21796 < 5 6 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 2380 < 5 < 5 < 2 < 502/15/05 TB 22049 < 5 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 2140 < 5 < 5 < 2 < 504/05/05 TB 22288 < 5 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 1540 < 5 < 5 < 2 < 5

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 25 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

MW-040JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: B53/MW-45

10/03/97 TB 02933 < 5 < 5 < 5 < 10 < 5 < 5 < 5 J 3 < 10 < 5 < 50 < 5 < 5 < 10 < 5

02/09/99 TB 07438 < 100 < 5 < 5 < 5 < 20 < 5 < 5 < 5 < 10 < 5 < 10 < 10 < 5 < 10 < 100 < 5 < 10 < 15 < 508/11/99 TB 09209 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 5

03/16/00 TB 11416 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 5

02/01/01 TB 13679 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 508/13/01 TB 14952 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 140 < 5 < 5 < 5 < 511/16/01 TB 15685 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 5

02/18/02 TB 16474 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 5

05/08/02 TB 16969 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 508/13/02 TB 17686 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 J 86 < 5 < 5 < 5 < 5

03/13/03 TB 19000 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 508/15/03 TB 19654 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

08/30/04 TB 21044 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 510/15/04 TB 21318 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 511/18/04 TB 21466 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 512/07/04 TB 21573 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

01/13/05 TB 21797 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 502/15/05 TB 22068 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 506/22/05 TB 22747 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 26 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

MW-044JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: B53/MW-45

09/30/97 TB 02932 < 5 < 5 < 5 < 10 < 5 < 5 < 5 J 3 < 10 < 5 700 < 5 < 5 < 10 < 5

07/11/98 TB 05004 < 10 < 5 < 5 < 5 < 20 < 5 < 5 < 5 < 10 < 5 < 10 < 10 < 5 < 10 < 50 < 5 < 10 < 15 < 5

02/14/99 TB 07485 < 100 < 5 < 5 < 5 < 20 < 5 < 5 < 5 < 10 < 5 < 10 < 10 < 5 < 10 < 100 < 5 < 10 < 15 < 508/11/99 TB 09210 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 5

03/16/00 TB 11417 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 5

02/01/01 TB 13680 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 508/14/01 TB 14959 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 5

02/18/02 TB 16475 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 5

05/09/02 TB 16976 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 508/13/02 TB 17687 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 5

03/13/03 TB 19001 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 508/15/03 TB 19655 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

08/30/04 TB 21045 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 510/15/04 TB 21319 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 511/17/04 TB 21447 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 512/07/04 TB 21574 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

01/13/05 TB 21798 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 502/15/05 TB 22050 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 504/05/05 TB 22290 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 27 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

MW-095JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: B53/MW-45

06/26/96 TB 01592 500 23000 < 1000 < 1000 < 2000 17000 920 630 < 1000 < 2000 < 1000 < 10000 < 1000 3200 7200 4600

01/02/97 TB 03570 2200 < 1300 < 1300 < 5000 4100 < 1300 < 1300 < 2500 < 1300 < 2500 < 2500 < 1300 J 590 < 1300 J 560 J 1300 < 130004/13/97 TB 02042 26000 < 1000 < 1000 < 2000 10000 J 560 < 1000 < 1000 < 2000 < 1000 < 10000 < 1000 1300 10000 < 100006/28/97 TB 02352 320 32000 J 630 < 1000 < 2000 10000 J 560 < 1000 < 1000 < 2000 < 1000 < 10000 < 1000 1500 17000 < 1000

01/31/98 TB 03702 1800 < 120 360 < 500 2200 310 < 250 < 120 < 250 < 250 < 120 380 < 120 300 910 40003/08/98 TB 03924 1800 < 100 430 < 200 2800 380 < 100 < 100 < 200 < 100 J 780 < 100 470 1400 53005/11/98 TB 04519 < 125 1000 < 125 430 < 250 2400 280 < 125 < 125 < 250 < 125 < 1250 < 125 220 860 15007/11/98 TB 05048 J 69 970 17 360 < 100 D 980 75 300 44 < 25 < 50 < 50 < 25 160 410 < 25 140 1000 35009/08/98 TB 05753 1000 2200 J 41 540 < 400 4700 160 420 J 50 < 100 < 200 < 200 < 100 370 1400 < 100 J 180 2600 220

10/07/98 TB 06091 < 5000 450 < 250 J 210 < 1000 < 250 < 250 J 130 < 500 < 250 < 500 < 500 < 250 < 500 J 890 < 250 < 500 J 250 < 25011/09/98 TB 06498 < 2000 < 100 < 100 < 100 890 2500 < 100 < 100 < 200 < 100 < 200 < 200 < 100 < 200 J 750 < 100 < 200 < 300 < 100

01/04/99 TB 07125 J 62 420 < 25 220 < 100 560 32 100 J 15 < 25 < 50 < 50 < 25 < 50 760 < 25 J 27 290 110

02/09/99 TB 07443 < 2000 220 < 100 120 < 400 < 100 < 100 J 60 < 200 < 100 < 200 < 200 < 100 < 200 < 2000 < 100 < 200 J 120 < 100

02/01/00 TB 11066 < 160 2600 < 80 570 < 80 480 180 220 < 80 < 80 < 800 < 80 < 80 450 6300 < 80 90 880 J 4003/16/00 TB 11418 94 D 7100 190 D 1100 < 5 D 4900 D 630 D 680 < 5 J 4 < 50 < 5 13 D 1800 D 11000 49 D 540 D 4900 21008/04/00 TB 12321 < 400 1600 < 200 500 < 200 420 < 200 240 < 200 < 200 < 2000 < 200 < 200 210 46000 < 200 < 200 550 < 200

02/01/01 TB 13682 280 3100 < 100 580 < 100 1400 160 200 < 100 < 100 < 1000 < 100 < 100 480 11000 < 100 100 1200 16008/13/01 TB 14953 < 80 1000 J 13 220 < 40 370 < 40 < 40 < 40 < 40 < 400 < 40 < 40 140 6500 < 40 J 16 260 < 40

02/18/02 TB 16476 < 80 1400 < 40 230 < 40 520 90 43 < 40 < 40 < 400 < 40 < 40 180 7900 < 40 J 30 550 J 2405/08/02 TB 16970 40 640 < 20 130 < 20 78 37 30 < 20 < 20 < 200 < 20 < 20 73 4700 < 20 J 7 190 J 408/13/02 TB 17691 < 50 590 < 25 130 < 25 66 32 28 < 25 < 25 < 250 < 25 < 25 71 3500 < 25 J 6 230 < 2511/07/02 TB 18162 < 25 1300 13 180 < 13 310 65 35 < 13 < 13 < 125 < 13 J 5 150 12000 J 5 23 260 J 23

03/14/03 TB 19020 J 4 17 < 5 J 4 < 5 J 3 < 5 J 2 < 5 < 5 < 50 < 5 < 5 J 2 710 < 5 < 5 6 1405/07/03 TB 19186 < 5 30 < 5 9 < 15 9 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 609 < 5 < 5 J 7 808/15/03 TB 19656 9 6 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 118 < 5 < 5 < 2 1611/11/03 TB 19980 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

02/19/04 TB 20435 < 5 6 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 J 2 < 508/27/04 TB 21021 < 5 8 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

02/14/05 TB 22007 < 5 12 < 5 6 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 596 < 5 < 5 < 2 < 505/17/05 TB 22558 < 5 21 < 5 9 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 19000 < 5 < 5 < 2 < 5

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 28 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

MW-096JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: B53/MW-45

06/26/96 TB 01593 7 < 5 < 5 < 5 < 10 < 5 < 5 < 5 < 5 < 10 < 5 240 < 5 < 5 < 10 < 5

05/11/98 TB 04520 < 5 < 5 < 5 < 5 < 10 J 4 < 5 < 5 < 5 < 10 < 5 E 8100 < 5 < 5 < 10 < 5

01/03/99 TB 07106 < 100 < 5 < 5 < 5 < 20 < 5 < 5 < 5 < 10 < 5 < 10 < 10 < 5 < 10 < 100 < 5 < 10 < 15 < 502/09/99 TB 07440 < 100 < 5 < 5 < 5 < 20 < 5 < 5 < 5 < 10 < 5 < 10 < 10 < 5 < 10 < 100 < 5 < 10 < 15 < 508/11/99 TB 09212 < 10 10 < 5 < 5 < 5 35 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 D 18000 < 5 < 5 < 5 < 5

03/15/00 TB 11396 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 D 3200 < 5 < 5 < 5 < 5

02/20/02 TB 16507 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 D 3500 < 5 < 5 < 5 < 505/16/02 TB 17013 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 J 3 < 5 < 5 D 6700 < 5 < 5 < 5 < 5

08/13/02 TB 17692 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 D 3900 < 5 < 5 < 5 < 5

03/13/03 TB 19009 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 2500 < 5 < 5 < 5 < 508/19/03 TB 19675 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 1870 < 5 < 5 < 2 < 5

05/17/05 TB 22559 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 12 < 5 < 5 22200 < 5 < 5 < 2 < 5

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 29 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

MW-098JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: B53/MW-45

08/21/96 TB 00274 < 10 97 < 50 < 50 < 100 450 < 50 76 < 50 < 50 < 100 < 50 < 50 2590 < 50 < 50 120 < 50

01/02/97 TB 03569 28 < 5 12 < 20 < 5 J 3 < 5 < 10 < 5 < 10 < 10 < 5 < 10 < 5 < 10 41 < 503/22/97 TB 01906 E 250 J 2 < 5 < 10 E 1500 150 J 2 5 < 10 < 5 E 3200 < 5 48 E 320 3604/13/97 TB 02041 62 < 5 49 < 10 < 5 20 < 5 < 5 < 10 < 5 E 520 < 5 < 5 42 < 506/06/97 TB 02237 J 1 27 < 5 42 < 10 19 16 < 5 5 < 10 < 5 480 < 5 8 J 8 < 511/30/97 TB 03371 27 < 5 11 < 20 J 2 J 3 < 5 < 10 < 5 49 < 10 < 5 < 10 < 5 < 10 J 10 < 5

04/04/98 TB 04199 < 5 22 < 5 8 < 10 < 5 < 5 < 5 < 5 < 10 < 5 550 < 5 < 5 26 < 508/08/98 TB 05431 < 10 5 < 5 J 2 < 20 < 5 < 5 < 5 < 10 < 5 < 10 < 10 < 5 < 10 < 50 < 5 < 10 J 5 < 5

01/03/99 TB 07107 < 100 J 5 < 5 < 5 < 20 < 5 < 5 J 3 < 10 < 5 < 10 < 10 < 5 < 10 < 100 < 5 < 10 < 15 < 5

02/09/99 TB 07442 < 100 J 2 < 5 J 2 < 20 < 5 < 5 J 2 < 10 < 5 < 10 < 10 < 5 < 10 < 100 < 5 < 10 < 15 < 508/11/99 TB 09214 < 10 J 3 < 5 J 2 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 5

03/16/00 TB 11420 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 5

02/01/01 TB 13684 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 2400 < 5 < 5 < 5 < 508/14/01 TB 14962 < 10 7 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 470 < 5 < 5 < 5 < 5

02/18/02 TB 16478 < 10 J 3 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 150 < 5 < 5 < 5 < 505/09/02 TB 16981 < 10 14 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 110 < 5 < 5 < 5 < 508/13/02 TB 17694 < 10 19 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 J 28 < 5 < 5 < 5 < 5

03/13/03 TB 19004 < 10 19 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 505/07/03 TB 19187 < 5 22 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 508/15/03 TB 19658 < 5 23 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 511/11/03 TB 19981 < 5 17 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

02/19/04 TB 20436 < 5 13 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 508/27/04 TB 21022 < 5 6 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

02/14/05 TB 22008 < 5 6 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 505/17/05 TB 22560 < 5 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 30 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

MW-118JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: B53/MW-45

03/16/04 TB 20588 < 5 123 < 5 15 < 15 11 < 5 < 5 < 5 < 5 < 20 < 4 < 5 13 28000 < 5 < 5 10 < 503/19/04 TB 20594 < 5 117 < 5 15 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 8 21100 < 5 < 5 J 8 < 503/22/04 TB 20614 < 5 111 < 5 15 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 8 14600 < 5 < 5 J 7 < 506/23/04 TB 20796 < 5 33 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 2160 < 5 < 5 J 3 < 507/23/04 TB 20896 < 5 40 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 2610 < 5 < 5 J 2 < 510/15/04 TB 21320 < 5 46 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 675 < 5 < 5 < 2 < 511/17/04 TB 21448 < 5 30 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 610 < 5 < 5 < 2 < 512/07/04 TB 21575 < 5 24 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

01/13/05 TB 21799 < 5 21 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 502/15/05 TB 22069 < 5 22 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

05/17/05 TB 22561 < 5 56 < 5 6 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 2910 < 5 < 5 < 2 < 5

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 31 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

MW-120JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: Easement North

03/09/04 TB 20581 1220 < 5 < 5 < 5 < 15 317 < 5 < 5 20 < 5 < 20 < 4 < 5 < 5 717 < 5 111 < 2 29603/16/04 TB 20590 1370 < 25 < 25 < 25 < 75 344 < 25 < 25 < 25 < 25 < 100 < 20 < 25 < 25 884 < 25 103 < 10 29903/22/04 TB 20616 640 < 25 < 25 < 25 < 75 220 < 25 < 25 < 25 < 25 < 100 < 20 < 25 < 25 559 < 25 69 < 10 18704/08/04 TB 20641 275 < 5 < 5 < 5 < 15 53 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 317 < 5 32 < 2 16805/20/04 TB 20754 61 < 5 < 5 < 5 < 15 19 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 267 < 5 7 < 2 10906/28/04 TB 20818 94 < 5 < 5 < 5 < 15 36 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 151 < 5 10 < 2 11907/20/04 TB 20855 123 < 5 < 5 < 5 < 15 51 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 13 < 2 12409/14/04 TB 21186 169 < 5 < 5 < 5 < 15 507 < 5 < 5 5 < 5 < 20 < 4 < 5 < 5 213 < 5 77 < 2 14110/19/04 TB 21341 149 < 5 < 5 < 5 J 23 480 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 195 < 5 67 < 2 10911/09/04 TB 21390 237 < 5 < 5 < 5 64 853 < 5 < 5 7 < 5 < 20 < 4 < 5 < 5 512 < 5 122 < 2 121

12/02/04 TB 21508 970 < 20 < 20 < 20 < 60 3020 < 20 < 20 38 < 20 < 80 < 16 < 20 < 20 832 < 20 595 < 8 216

01/11/05 TB 21759 1840 < 125 < 125 < 125 < 375 5760 < 125 < 125 < 125 < 125 < 500 < 100 < 125 < 125 < 1250 < 125 1120 < 50 297

02/22/05 TB 22141 942 < 200 < 200 < 200 < 600 5810 < 200 < 200 < 200 < 200 < 800 < 160 < 200 < 200 < 2000 < 200 1060 < 80 J 114

04/09/05 TB 22314 1670 < 125 < 125 < 125 < 375 6400 < 125 < 125 < 125 < 125 < 500 < 100 < 125 < 125 73900 < 125 1220 < 50 J 126

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 32 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

NS-001JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: Easement North

07/01/97 TB 02415 < 120 < 120 < 120 < 250 2400 < 120 < 120 < 120 < 250 < 120 13000 < 120 < 120 < 250 < 12008/14/97 TB 02579 < 500 < 500 J 250 5300 13000 < 500 J 420 < 500 < 1000 < 500 J 780 < 500 J 390 < 1000 300011/16/97 TB 03311 < 100 < 100 < 100 J 80 1800 < 100 < 100 J 120 < 100 < 200 < 10 < 100 < 200 2000 < 100 < 200 < 300 J 330

02/15/98 TB 03791 < 25 < 25 < 25 930 310 < 25 J 19 < 25 < 50 < 25 J 170 < 25 < 25 < 50 29005/11/98 TB 04537 < 10 < 10 < 10 < 10 B 220 64 < 10 10 < 10 44 < 10 300 < 10 J 10 < 20 32007/10/98 TB 04998 < 50 < 25 < 25 < 25 220 130 < 25 < 25 < 50 < 25 58 < 50 < 25 < 50 330 < 25 < 50 < 75 130008/05/98 TB 05362 < 20 < 10 < 10 < 10 < 40 110 < 10 < 10 J 4 < 10 < 20 < 20 < 10 < 20 360 < 10 < 20 < 30 82011/02/98 TB 06331 < 100 < 5 < 5 < 5 D 800 D 410 < 5 < 5 J 3 < 5 < 10 < 10 < 5 < 10 560 < 5 J 1 < 15 250

01/08/99 TB 07167 < 100 < 5 < 5 < 5 91 33 < 5 < 5 J 1 < 5 < 10 < 10 < 5 < 10 440 < 5 < 10 < 15 59

02/17/99 TB 07546 < 100 < 5 < 5 < 5 53 35 < 5 < 5 < 10 < 5 < 10 < 10 < 5 < 10 200 < 5 < 10 < 15 150

05/16/99 TB 08306 < 100 < 5 < 5 < 5 < 20 6 < 5 < 5 < 10 < 5 < 10 < 10 < 5 < 10 550 < 5 < 10 < 15 13

08/20/99 TB 09370 44 < 5 < 5 < 5 < 5 J 4 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 170 < 5 < 5 < 5 J 5

11/08/99 TB 10400 < 25 < 13 < 13 < 13 543 310 < 13 < 13 < 13 < 13 < 125 < 13 < 13 < 13 < 250 < 13 < 13 < 13 410

10/27/00 TB 13024 < 10 < 5 < 5 < 5 < 5 19 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 154

02/24/01 TB 13896 < 10 < 5 < 5 < 5 7 10 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 J 72 < 5 < 5 < 5 J 105/06/01 TB 14366 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 508/06/01 TB 14878 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 509/04/01 TB 15188 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 510/04/01 TB 15302 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 510/30/01 TB 15434 < 10 < 5 < 5 < 5 < 5 J 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 512/06/01 TB 15862 < 10 < 5 < 5 < 5 < 5 17 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 5

01/03/02 TB 16093 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 50 < 5 < 5 < 5 < 501/26/02 TB 16260 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 502/27/02 TB 16568 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 503/29/02 TB 16756 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 505/01/02 TB 16893 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 506/13/02 TB 17296 J 4 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 507/11/02 TB 17408 < 10 < 5 < 5 < 5 < 5 J 3 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 508/10/02 TB 17666 < 10 < 5 < 5 < 5 < 5 < 5 < 5 J 1 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 509/19/02 TB 17951 47 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 5

10/01/02 TB 18008 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 J 10 < 5 < 5 < 5 < 511/01/02 TB 18113 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 511/19/02 TB 18200 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 512/05/02 TB 18331 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 5

01/02/03 TB 18393 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 502/11/03 TB 18645 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 5

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 33 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

NS-001JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: Easement North

04/15/03 TB 19107 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 505/06/03 TB 19141 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 506/13/03 TB 19379 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 507/08/03 TB 19459 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 508/06/03 TB 19512 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 509/17/03 TB 19820 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 510/13/03 TB 19903 7 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 61 < 5 < 5 < 2 < 511/04/03 TB 19915 12 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 512/10/03 TB 20155 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

02/12/04 TB 20326 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

09/14/04 TB 21187 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 83 < 5 < 5 < 2 < 5

02/22/05 TB 22147 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 56 < 5 < 5 < 2 < 505/19/05 TB 22625 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 34 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

NS-002JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: Easement North

04/09/97 TB 02020 < 500 < 500 < 500 < 1000 1600 < 500 680 < 500 < 1000 < 500 J 3900 < 500 690 < 1000 740007/01/97 TB 02416 < 500 < 500 < 500 < 1000 2600 < 500 1800 < 500 3900 < 500 < 5000 < 500 1100 < 1000 1400009/06/97 TB 02772 < 500 < 500 < 500 < 1000 790 < 500 1400 < 500 8100 < 500 J 4900 < 500 760 < 1000 1200012/14/97 TB 03481 < 500 < 500 < 500 < 2000 J 300 < 500 < 500 J 920 < 500 7000 < 500 < 1000 < 500 J 330 < 1500 9600

03/13/98 TB 03971 < 100 < 100 < 100 530 180 < 100 420 < 100 3600 < 100 < 1000 < 100 150 < 200 E 500007/15/98 TB 05094 J 77 < 50 < 50 < 50 < 200 J 45 < 50 < 50 150 < 50 < 100 < 100 < 50 < 100 13000 < 50 J 33 < 150 380012/05/98 TB 06871 < 100 < 5 < 5 < 5 < 20 < 5 < 5 < 5 J 2 < 5 < 10 < 10 < 5 < 10 490 < 5 J 2 < 15 1074

08/23/99 TB 09416 48 < 5 < 5 < 5 < 5 < 5 < 5 < 5 8 < 5 < 50 < 5 < 5 < 5 430 < 5 < 5 < 5 5211/08/99 TB 10401 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 140 < 5 < 5 < 5 5

10/27/00 TB 13025 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 5

02/24/01 TB 13897 150 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 505/06/01 TB 14367 890 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 511/07/01 TB 15551 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 5

02/27/02 TB 16569 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 505/16/02 TB 17014 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 1309/07/02 TB 17878 J 3 < 5 < 5 < 5 < 5 13 < 5 < 5 13 < 5 < 50 < 5 < 5 < 5 J 61 < 5 J 5 < 5 120

02/11/03 TB 18646 < 10 < 5 < 5 < 5 < 5 J 2 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 J 44 < 5 < 5 < 5 < 505/07/03 TB 19165 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 508/06/03 TB 19513 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 283 < 5 < 5 < 2 < 511/04/03 TB 19920 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 269 < 5 < 5 < 2 < 5

02/12/04 TB 20332 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 509/14/04 TB 21188 < 5 < 5 < 5 < 5 < 15 50 < 5 < 5 7 < 5 < 20 < 4 < 5 < 5 670 < 5 < 5 < 2 211

02/23/05 TB 22178 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 237 < 5 < 5 < 2 < 505/19/05 TB 22626 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 428 < 5 < 5 < 2 53

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 35 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

NS-003JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: Easement North

03/16/97 TB 01877 < 2500 < 2500 < 2500 66000 36000 < 2500 < 2500 5200 < 5000 < 2500 < 25000 < 2500 < 2500 < 5000 < 250004/09/97 TB 02023 < 5000 < 5000 < 5000 110000 81000 < 5000 < 5000 < 5000 < 10000 < 5000 < 50000 < 5000 < 5000 < 10000 < 500007/01/97 TB 02417 < 5000 < 5000 < 5000 < 10000 70000 < 5000 < 5000 < 5000 < 10000 < 5000 < 50000 < 5000 < 5000 < 10000 < 500010/03/97 TB 02937 < 2500 < 2500 < 2500 20000 48000 < 2500 < 2500 < 2500 < 5000 < 2500 < 25000 < 2500 < 2500 < 5000 < 2500

01/18/98 TB 03668 < 1200 < 1200 < 1200 B 16000 14000 < 1200 < 1200 < 2500 < 1200 < 2500 < 2500 < 1200 < 2500 < 1200 < 2500 < 3800 < 120004/13/98 TB 04291 J 2300 < 2500 < 2500 < 2500 B 18000 58000 < 2500 < 2500 < 2500 < 5000 < 2500 J 3400 < 2500 < 2500 < 5000 < 250007/10/98 TB 04999 < 50 < 25 < 25 < 25 < 100 900 < 25 < 25 < 50 < 25 < 50 < 50 < 25 < 50 J 130 < 25 < 50 < 75 < 2508/05/98 TB 05363 < 50 < 25 < 25 < 25 1100 2500 < 25 < 25 < 50 < 25 < 50 < 50 < 25 < 50 300 < 25 < 50 < 75 < 2511/09/98 TB 06499 < 2000 < 100 < 100 < 100 990 3200 < 100 < 100 < 200 < 100 < 200 < 200 < 100 < 200 < 2000 < 100 < 200 < 300 < 100

01/08/99 TB 07168 < 500 < 25 < 25 < 25 390 870 < 25 < 25 < 50 < 25 < 50 < 50 < 25 < 50 550 < 25 < 50 < 75 < 2502/17/99 TB 07541 < 500 < 25 < 25 < 25 550 400 < 25 < 25 < 50 < 25 < 50 < 50 < 25 < 50 < 500 < 25 < 50 < 75 < 2505/16/99 TB 08307 < 100 < 5 < 5 < 5 < 20 21 < 5 < 5 < 10 < 5 < 10 < 10 < 5 < 10 650 < 5 < 10 < 15 J 3

08/20/99 TB 09371 < 10 < 5 < 5 < 5 < 5 39 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 260 < 5 < 5 < 5 < 511/08/99 TB 10402 < 10 < 5 < 5 < 5 < 5 6 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 340 < 5 < 5 < 5 < 5

02/10/00 TB 11161 28 < 5 < 5 < 5 < 5 20 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 960 < 5 < 5 < 5 < 508/06/00 TB 12347 < 10 < 5 < 5 < 5 < 5 76 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 270 < 5 < 5 < 5 J 310/27/00 TB 13026 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 5

02/24/01 TB 13898 < 10 < 5 < 5 < 5 51 D 720 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 750 < 5 14 < 5 11506/05/01 TB 14594 < 10 < 5 < 5 < 5 32 D 1700 < 5 < 5 12 < 5 < 50 < 5 < 5 < 5 1200 < 5 14 < 5 13007/02/01 TB 14677 < 50 < 25 < 25 < 25 < 25 800 < 25 < 25 < 25 < 25 < 250 < 25 < 25 < 25 530 < 25 < 25 < 25 < 2508/30/01 TB 15168 990 < 50 < 50 < 50 < 50 D 5100 < 50 < 50 < 50 < 50 < 500 < 50 < 50 < 50 1500 < 50 < 50 < 50 < 5011/07/01 TB 15552 < 100 < 50 < 50 < 50 < 50 D 8700 < 50 < 50 < 50 < 50 < 500 < 50 < 50 < 50 1300 < 50 < 50 < 50 < 50

02/27/02 TB 16570 < 250 < 125 < 125 < 125 < 125 4100 < 125 < 125 < 125 < 125 < 1250 < 125 < 125 < 125 J 480 < 125 < 125 < 125 < 12504/01/02 TB 16764 130 < 5 < 5 < 5 < 5 220 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 140 < 5 < 5 < 5 < 505/16/02 TB 17015 < 10 < 5 < 5 < 5 < 5 36 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 509/07/02 TB 17879 < 400 < 200 < 200 < 200 < 200 D 500 < 200 < 200 < 200 < 200 < 2000 < 200 < 200 < 200 < 4000 < 200 < 200 < 200 < 20011/11/02 TB 18185 < 10 < 5 < 5 < 5 < 5 54 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 280 < 5 < 5 < 5 < 5

02/11/03 TB 18647 < 10 < 5 < 5 < 5 < 5 200 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 230 < 5 < 5 < 5 < 505/07/03 TB 19166 < 5 < 5 < 5 < 5 < 15 1690 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

08/06/03 TB 19514 < 5 < 5 < 5 < 5 < 15 2860 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 151 < 5 < 5 < 2 < 511/04/03 TB 19921 < 5 < 5 < 5 < 5 < 15 27 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 218 < 5 < 5 < 2 < 5

02/12/04 TB 20327 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 237 < 5 < 5 < 2 < 509/14/04 TB 21189 < 5 < 5 < 5 < 5 < 15 1450 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 783 < 5 < 5 < 2 J 2

02/22/05 TB 22148 < 5 < 5 < 5 < 5 < 15 151 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 445 < 5 < 5 < 2 < 505/19/05 TB 22627 < 5 < 5 < 5 < 5 < 15 2240 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 1780 < 5 < 5 < 2 < 5

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 36 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

NS-003JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: Easement North

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 37 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

NS-004JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: Easement North

07/01/97 TB 02418 < 500 < 500 < 500 < 1000 11000 < 500 < 500 < 500 < 1000 < 500 < 5000 < 500 < 500 < 1000 < 50010/03/97 TB 02938 < 25 < 25 < 25 < 50 570 < 25 < 25 < 25 < 50 < 25 < 250 < 25 < 25 < 50 J 11

01/18/98 TB 03679 < 250 < 250 < 250 < 1000 9100 < 250 < 250 < 500 < 250 < 500 < 500 < 250 < 500 < 250 < 500 < 750 < 250

08/23/99 TB 09417 < 10 < 5 < 5 < 5 36 16 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 460 < 5 < 5 < 5 < 511/08/99 TB 10403 < 10 < 5 < 5 < 5 < 5 20 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 610 < 5 < 5 < 5 < 5

02/24/01 TB 13899 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 J 76 < 5 < 5 < 5 < 505/06/01 TB 14368 370 < 5 < 5 < 5 10 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 511/07/01 TB 15553 < 10 < 5 < 5 < 5 < 5 7 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 J 75 < 5 < 5 < 5 < 5

02/27/02 TB 16571 < 10 < 5 < 5 < 5 < 5 10 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 J 46 < 5 < 5 < 5 < 505/16/02 TB 17016 < 10 < 5 < 5 < 5 < 5 6 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 509/10/02 TB 17891 < 10 < 5 < 5 < 5 < 5 J 1 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 5

02/11/03 TB 18648 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 505/07/03 TB 19167 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 508/06/03 TB 19515 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 343 < 5 < 5 < 2 < 511/04/03 TB 19922 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

02/12/04 TB 20333 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 509/14/04 TB 21190 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

02/23/05 TB 22179 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 505/19/05 TB 22628 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 38 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

NS-009JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: Easement North

07/01/97 TB 02423 < 5000 < 5000 < 5000 < 10000 72000 < 5000 < 5000 B 2000 < 10000 < 5000 < 50000 < 5000 < 5000 < 10000 1300010/03/97 TB 02941 < 500 < 500 < 500 < 1000 6600 < 500 2300 < 500 8200 < 500 J 4200 < 500 1200 < 1000 18000

01/18/98 TB 03673 < 500 < 500 < 500 J 1900 J 220 < 500 < 500 J 310 < 500 B 17000 < 1000 < 500 < 1000 < 500 < 1000 < 1500 330004/12/98 TB 04272 < 100 < 100 < 100 < 100 B 480 180 < 100 J 83 < 100 2000 < 100 5200 < 100 < 100 < 200 290007/10/98 TB 05000 < 200 < 100 < 100 < 100 720 < 100 < 100 < 100 280 < 100 1600 < 200 < 100 < 200 1500 < 100 J 80 < 300 D 1700008/05/98 TB 05364 J 60 < 100 < 100 < 100 J 180 J 40 < 100 < 100 J 40 < 100 560 < 200 < 100 < 200 1700 < 100 < 200 < 300 4100

02/17/99 TB 07545 320 < 5 < 5 < 5 D 9300 150 < 5 < 5 D 280 < 5 D 27000 < 10 < 5 < 10 2400 < 5 160 < 15 D 1100005/21/99 TB 08358 < 2000 < 100 < 100 < 100 < 400 J 43 < 100 < 100 240 < 100 < 200 < 200 < 100 < 200 < 2000 < 100 J 45 < 300 646008/20/99 TB 09365 31 < 5 < 5 < 5 36 27 < 5 < 5 87 < 5 110 < 5 < 5 < 5 990 < 5 11 < 5 D 1900

11/08/99 TB 10408 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 440 < 5 < 5 < 5 210

10/27/00 TB 13029 < 10 < 5 < 5 < 5 < 5 13 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 468

02/24/01 TB 13900 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 160 < 5 < 5 < 5 60

05/06/01 TB 14370 70 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 250 < 5 < 5 < 5 6211/07/01 TB 15558 < 10 < 5 < 5 < 5 < 5 J 3 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 390 < 5 < 5 < 5 < 5

02/27/02 TB 16575 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 600 < 5 < 5 < 5 < 505/16/02 TB 17019 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 509/07/02 TB 17881 J 1 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 310 < 5 < 5 < 5 < 5

02/11/03 TB 18649 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 740 < 5 < 5 < 5 < 505/07/03 TB 19168 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 520 < 5 < 5 < 2 < 508/06/03 TB 19520 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 584 < 5 < 5 < 2 < 511/04/03 TB 19923 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 521 < 5 < 5 < 2 < 5

02/12/04 TB 20329 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 403 < 5 < 5 < 2 < 509/14/04 TB 21191 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 818 < 5 < 5 < 2 9

02/22/05 TB 22149 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 613 < 5 < 5 < 2 < 505/19/05 TB 22629 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 832 < 5 < 5 < 2 < 5

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 39 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

NS-010JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: Easement North

07/01/97 TB 02424 < 25000 < 25000 < 25000 590000 490000 < 25000 < 25000 B 10000 < 50000 < 25000 < 250000 < 25000 < 25000 < 50000 < 2500008/14/97 TB 02580 < 12000 < 12000 < 12000 68000 220000 < 12000 < 12000 < 12000 < 25000 < 12000 < 120000 < 12000 < 12000 < 25000 < 1200011/16/97 TB 03312 < 2500 < 2500 < 2500 14000 47000 < 2500 < 2500 < 5000 < 2500 < 5000 < 2500 < 5000 5000 < 2500 < 5000 < 7500 < 2500

02/15/98 TB 03792 < 1000 < 1000 < 1000 22000 21000 < 1000 < 1000 < 1000 < 2000 < 1000 < 10000 < 1000 < 1000 < 2000 < 100003/10/98 TB 03974 < 1000 < 1000 < 1000 13000 27000 < 1000 < 1000 J 740 < 2000 < 1000 < 10000 < 1000 < 1000 < 2000 < 100004/12/98 TB 04271 < 1000 < 1000 < 1000 < 1000 B 13000 24000 < 1000 < 1000 < 1000 < 2000 < 1000 90000 < 1000 < 1000 < 2000 < 100005/11/98 TB 04538 < 500 < 500 < 500 < 500 B 9800 3400 < 500 < 500 < 500 J 510 < 500 J 430 < 500 < 500 < 1000 < 50007/10/98 TB 05001 < 200 < 100 < 100 < 100 D 12000 D 4400 < 100 < 100 < 200 < 100 320 < 200 < 100 < 200 2200 < 100 < 200 < 300 55008/05/98 TB 05365 < 200 < 100 < 100 < 100 3800 4400 < 100 < 100 < 200 < 100 < 200 < 200 < 100 < 200 1600 < 100 < 200 < 300 40010/16/98 TB 06160 < 2000 < 100 < 100 < 100 4800 E 4800 < 100 < 100 J 79 < 100 < 200 < 200 < 100 < 200 1100 < 100 < 200 < 300 J 140

11/02/98 TB 06335 < 2000 < 100 < 100 < 100 D 9000 D 7600 < 100 < 100 < 200 < 100 < 200 < 200 < 100 < 200 2300 < 100 < 200 < 300 J 71

12/01/98 TB 06806 < 2500 < 125 < 125 < 125 < 500 5600 < 125 < 125 J 35 < 125 < 250 < 250 < 125 < 250 J 1900 < 125 < 250 < 375 J 36

01/08/99 TB 07172 < 5000 < 250 < 250 < 250 3300 3200 < 250 < 250 < 500 < 250 < 500 < 500 < 250 < 500 J 2300 < 250 < 500 < 750 < 25002/17/99 TB 07544 < 5000 < 250 < 250 < 250 5300 3200 < 250 < 250 < 500 < 250 < 500 < 500 < 250 < 500 < 5000 < 250 < 500 < 750 < 25003/18/99 TB 07787 < 2000 < 100 < 100 < 100 2200 3900 < 100 < 100 < 200 < 100 < 200 < 200 < 100 < 200 < 2000 < 100 J 23 < 300 < 10004/11/99 TB 08003 < 2000 < 100 < 100 < 100 < 400 4000 < 100 < 100 < 200 < 100 < 200 < 200 < 100 < 200 2400 < 100 < 200 < 300 < 10005/21/99 TB 08359 < 1000 < 50 < 50 < 50 < 200 1600 < 50 < 50 < 100 < 50 < 100 < 100 < 50 < 100 < 1000 < 50 < 100 < 150 J 5006/05/99 TB 08564 < 1000 < 50 < 50 < 50 < 200 1100 < 50 < 50 < 100 < 50 < 100 < 100 < 50 < 100 < 1000 < 50 < 100 < 150 J 2807/06/99 TB 08880 < 1000 < 50 < 50 < 50 790 D 2100 < 50 < 50 < 100 < 50 < 100 < 100 < 50 < 100 1100 < 50 < 100 < 150 < 5008/20/99 TB 09373 < 200 < 100 < 100 < 100 520 2800 < 100 < 100 < 100 < 100 < 1000 < 100 < 100 < 100 < 2000 < 100 < 100 < 100 < 10009/09/99 TB 09628 < 200 < 100 < 100 < 100 570 2100 < 100 < 100 < 100 < 100 < 1000 < 100 < 100 < 100 < 2000 < 100 < 100 < 100 < 10010/08/99 TB 10028 < 100 < 50 < 50 < 50 950 3810 < 50 < 50 < 50 < 50 < 500 < 50 < 50 < 50 J 920 < 50 < 50 < 50 < 5011/08/99 TB 10409 < 100 < 50 < 50 < 50 350 2000 < 50 < 50 < 50 < 50 < 500 < 50 < 50 < 50 < 1000 < 50 < 50 < 50 < 5012/13/99 TB 10723 < 100 < 50 < 50 < 50 270 1900 < 50 < 50 < 50 < 50 < 500 < 50 < 50 < 50 < 1000 < 50 < 50 < 50 < 50

02/10/00 TB 11162 < 100 < 50 < 50 < 50 < 50 1340 < 50 < 50 < 50 < 50 < 500 < 50 < 50 < 50 < 1000 < 50 < 50 < 50 < 5008/06/00 TB 12348 < 10 < 5 < 5 < 5 < 5 31 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 190 < 5 < 5 < 5 < 510/27/00 TB 13030 < 80 < 40 < 40 < 40 < 40 1700 < 40 < 40 < 40 < 40 < 400 < 40 < 40 < 40 < 800 < 40 < 40 < 40 < 40

01/06/01 TB 13520 < 100 < 50 < 50 < 50 < 50 1300 < 50 < 50 < 50 < 50 < 500 < 50 < 50 < 50 < 1000 < 50 < 50 < 50 J 7006/05/01 TB 14595 < 10 < 5 < 5 < 5 < 5 17 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 140 < 5 < 5 < 5 < 507/02/01 TB 14678 < 20 < 10 < 10 < 10 30 290 < 10 < 10 < 10 < 10 < 100 < 10 < 10 < 10 2700 < 10 < 10 < 10 < 10

08/30/01 TB 15170 20 < 5 < 5 < 5 88 10 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 2300 < 5 < 5 < 5 < 511/07/01 TB 15555 < 10 < 5 < 5 < 5 < 5 77 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 2200 < 5 < 5 < 5 < 5

02/27/02 TB 16576 < 10 < 5 < 5 < 5 < 5 11 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 D 4000 < 5 < 5 < 5 J 1

04/01/02 TB 16765 J 3 < 5 < 5 < 5 < 5 J 1 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 D 5100 < 5 < 5 < 5 < 505/16/02 TB 17020 < 10 < 5 < 5 < 5 < 5 J 1 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 D 4800 < 5 < 5 < 5 < 509/07/02 TB 17882 < 10 < 5 < 5 < 5 5 D 350 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 D 5200 < 5 < 5 < 5 < 5

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 40 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

NS-010JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: Easement North

11/11/02 TB 18186 < 10 < 5 < 5 < 5 8 40 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 D 5900 < 5 < 5 < 5 < 5

02/11/03 TB 18650 < 10 < 5 < 5 < 5 < 5 29 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 D 8100 < 5 < 5 < 5 J 304/15/03 TB 19108 < 5 < 5 < 5 < 5 < 15 105 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 5700 < 5 < 5 < 2 J 305/06/03 TB 19142 < 5 < 5 < 5 < 5 < 15 88 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 7460 < 5 < 5 < 2 < 506/13/03 TB 19380 72 < 5 < 5 < 5 J 22 107 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 5800 < 5 < 5 < 2 < 507/08/03 TB 19460 7 < 5 < 5 < 5 < 15 57 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 3840 < 5 < 5 < 2 J 308/06/03 TB 19521 < 5 < 5 < 5 < 5 < 15 193 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 8050 < 5 < 5 < 2 J 309/17/03 TB 19821 < 5 < 5 < 5 < 5 < 15 612 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 9190 < 5 < 5 < 2 J 410/13/03 TB 19904 < 5 < 5 < 5 < 5 J 35 215 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 5180 < 5 < 5 < 2 < 511/04/03 TB 19916 8 < 5 < 5 < 5 < 15 250 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 4980 < 5 < 5 < 2 J 4

12/10/03 TB 20156 < 5 < 5 < 5 < 5 < 15 130 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 5640 < 5 < 5 J 4 < 5

02/12/04 TB 20330 < 5 < 5 < 5 < 5 < 15 29 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 7230 < 5 < 5 < 2 J 3

09/14/04 TB 21192 < 25 < 25 < 25 < 25 < 75 3450 < 25 < 25 < 25 < 25 < 100 < 20 < 25 < 25 11000 < 25 < 25 < 10 < 25

02/22/05 TB 22150 < 5 < 5 < 5 < 5 < 15 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 6430 < 5 < 5 < 2 J 305/19/05 TB 22630 < 5 < 5 < 5 < 5 < 15 87 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 10900 < 5 < 5 < 2 J 3

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 41 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

NS-011JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: Easement North

07/01/97 TB 02425 < 2500 < 2500 < 2500 19000 50000 < 2500 < 2500 < 2500 < 5000 < 2500 < 25000 < 2500 J 1100 < 5000 320009/06/97 TB 02773 < 1000 < 1000 < 1000 14000 34000 < 1000 < 1000 < 1000 < 2000 < 1000 < 10000 < 1000 < 1000 < 2000 < 100012/14/97 TB 03484 < 1000 < 1000 < 1000 6400 25000 < 1000 < 1000 < 2000 < 1000 < 2000 < 2000 < 1000 < 2000 < 1000 < 2000 < 3000 < 1000

03/13/98 TB 03975 < 500 < 500 < 500 3500 12000 < 500 < 500 J 360 < 1000 < 500 < 5000 < 500 < 500 < 1000 < 50004/12/98 TB 04276 520 < 500 < 500 < 500 B 6400 14000 < 500 < 500 < 500 < 1000 < 500 < 5000 < 500 < 500 < 1000 J 45009/15/98 TB 05829 < 10 < 5 < 5 < 5 22 73 < 5 < 5 12 < 5 < 10 < 10 < 5 < 10 120 < 5 < 10 < 15 2510/16/98 TB 06161 < 100 < 5 < 5 < 5 < 20 27 < 5 < 5 < 10 < 5 < 10 < 10 < 5 < 10 < 100 < 5 < 10 < 15 < 512/01/98 TB 06807 < 100 < 5 < 5 < 5 < 20 J 2 < 5 < 5 < 10 < 5 < 10 < 10 < 5 < 10 < 100 < 5 < 10 < 15 J 2

08/08/00 TB 12356 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 5

10/27/00 TB 13031 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 5

02/24/01 TB 13901 < 10 < 5 < 5 < 5 < 5 8 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 J 97 < 5 < 5 < 5 < 508/30/01 TB 15171 J 5 < 5 < 5 < 5 29 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 310 < 5 < 5 < 5 < 511/07/01 TB 15556 < 10 < 5 < 5 < 5 < 5 180 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 J 86 < 5 < 5 < 5 < 5

02/27/02 TB 16577 < 10 < 5 < 5 < 5 < 5 D 310 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 430 < 5 < 5 < 5 < 505/10/02 TB 16982 < 10 < 5 < 5 < 5 13 160 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 D 8200 < 5 < 5 < 5 < 509/10/02 TB 17892 < 10 < 5 < 5 < 5 < 5 D 240 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 D 24000 < 5 < 5 < 5 < 5

02/11/03 TB 18651 < 10 < 5 < 5 < 5 < 5 200 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 D 28000 < 5 < 5 < 5 J 104/15/03 TB 19109 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 7170 < 5 < 5 < 2 < 505/06/03 TB 19143 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 7630 < 5 < 5 < 2 < 506/13/03 TB 19381 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 289 < 5 < 5 < 2 < 507/08/03 TB 19461 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 50 < 5 < 5 < 2 < 508/06/03 TB 19522 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 329 < 5 < 5 < 2 < 509/17/03 TB 19822 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 586 < 5 < 5 < 2 < 510/13/03 TB 19905 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 655 < 5 < 5 < 2 < 511/04/03 TB 19917 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 667 < 5 < 5 < 2 < 512/10/03 TB 20157 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 385 < 5 < 5 < 2 < 5

02/12/04 TB 20334 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 79 < 5 < 5 < 2 < 509/14/04 TB 21193 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

02/22/05 TB 22151 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

05/19/05 TB 22631 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 42 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

NS-012JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: Easement North

01/14/99 TB 07213 J 180 < 25 < 25 < 25 < 100 28 < 25 < 25 63 < 25 < 50 < 50 < 25 < 50 1700 < 25 J 44 < 75 99

11/09/01 TB 15576 46 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 J 1

05/10/02 TB 16983 42 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 5

02/11/03 TB 18652 18 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 J 105/07/03 TB 19169 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 508/12/03 TB 19572 106 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 511/06/03 TB 19929 37 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

02/17/04 TB 20360 6 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

09/16/04 TB 21225 25 < 5 < 5 < 5 < 15 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

02/22/05 TB 22130 13 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 505/19/05 TB 22632 15 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 43 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

NS-013JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: Easement North

11/16/99 TB 10466 < 10 < 5 < 5 < 5 < 5 J 4 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 9 < 5 < 5

10/26/00 TB 13008 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 5

11/09/01 TB 15577 55 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 5

05/10/02 TB 16984 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 5

02/11/03 TB 18653 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 505/07/03 TB 19170 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 508/12/03 TB 19573 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 511/06/03 TB 19930 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

02/17/04 TB 20361 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 509/16/04 TB 21226 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

02/22/05 TB 22131 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 505/19/05 TB 22633 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 44 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

NS-014JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: Easement North

01/05/99 TB 07157 J 84 < 5 < 5 < 5 J 17 D 3700 < 5 < 5 15 < 5 < 10 < 10 < 5 < 10 < 100 < 5 D 920 < 15 3504/11/99 TB 08004 190 < 5 < 5 < 5 < 20 D 4400 < 5 < 5 23 < 5 < 10 < 10 < 5 < 10 < 100 < 5 D 1300 < 15 49

05/24/00 TB 11832 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 5

02/11/03 TB 18654 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 505/07/03 TB 19171 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 508/12/03 TB 19574 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 511/06/03 TB 19931 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

02/17/04 TB 20362 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 509/16/04 TB 21227 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

02/22/05 TB 22132 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 505/19/05 TB 22634 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 45 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

NS-015JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: Easement North

02/11/03 TB 18655 68 < 5 < 5 < 5 < 5 7 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 J 16 < 5 J 3 < 5 J 305/07/03 TB 19172 25 < 5 < 5 < 5 < 15 6 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 508/12/03 TB 19575 30 < 5 < 5 < 5 < 15 6 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 511/06/03 TB 19932 22 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

02/17/04 TB 20363 20 < 5 < 5 < 5 < 15 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 J 209/16/04 TB 21228 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

02/22/05 TB 22133 10 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 505/19/05 TB 22635 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 46 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

NS-016JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: Easement North

01/05/99 TB 07158 < 100 14 < 5 < 5 280 D 200000 < 5 < 5 D 1100 < 5 120 < 10 < 5 < 10 < 100 < 5 51000 < 15 D 380004/11/99 TB 08005 5600 < 5 < 5 < 5 62 9600 < 5 < 5 840 < 5 280 < 10 < 5 < 10 < 100 < 5 < 10 < 15 197006/08/99 TB 08605 J 4700 < 1000 < 1000 < 1000 < 4000 41000 < 1000 < 1000 J 740 < 1000 < 2000 < 2000 < 1000 < 2000 < 20000 < 1000 31000 < 3000 300007/06/99 TB 08881 5500 < 250 < 250 < 250 < 1000 D 9100 < 250 < 250 J 290 < 250 < 500 < 500 < 250 < 500 < 5000 < 250 9500 < 750 160009/10/99 TB 09648 D 24000 < 5 < 5 < 5 < 5 D 5900 < 5 < 5 300 < 5 J 31 < 5 < 5 < 5 750 < 5 D 5200 < 5 2700

02/11/03 TB 18656 D 280 < 5 < 5 < 5 < 5 20 < 5 < 5 J 2 < 5 < 50 < 5 < 5 < 5 520 < 5 16 < 5 J 605/07/03 TB 19173 203 < 5 < 5 < 5 < 15 18 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 83 < 5 11 < 2 < 508/12/03 TB 19576 345 < 5 < 5 < 5 < 15 19 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 11 < 2 J 411/06/03 TB 19933 200 < 5 < 5 < 5 < 15 18 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 6 < 2 J 4

02/17/04 TB 20364 228 < 5 < 5 < 5 < 15 11 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 J 4

09/16/04 TB 21229 59 < 5 < 5 < 5 < 15 10 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 J 3

02/22/05 TB 22134 28 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 505/19/05 TB 22636 50 < 5 < 5 < 5 < 15 8 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 47 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

NS-017JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: Easement North

11/04/98 TB 06396 15000 < 25 < 25 < 25 220 D 93000 < 25 < 25 1300 < 25 < 50 < 50 < 25 < 50 535 < 25 D 24000 < 75 7000

01/05/99 TB 07159 J 2900 < 2500 < 2500 < 2500 < 10000 110000 < 2500 < 2500 J 1200 < 2500 < 5000 < 5000 < 2500 < 5000 < 50000 < 2500 28000 < 7500 J 130004/11/99 TB 08006 < 50000 < 2500 < 2500 < 2500 < 10000 100000 < 2500 < 2500 J 700 < 2500 < 5000 < 5000 < 2500 < 5000 < 50000 < 2500 33000 < 7500 4600

05/24/00 TB 11833 7100 < 80 < 80 < 80 < 80 3100 < 80 < 80 160 < 80 < 800 < 80 < 80 < 80 < 1600 < 80 3700 < 80 1552

02/11/03 TB 18657 26 < 5 < 5 < 5 < 5 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 J 2 < 5 J 305/07/03 TB 19174 35 < 5 < 5 < 5 < 15 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 508/12/03 TB 19577 99 < 5 < 5 < 5 < 15 6 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 2111/06/03 TB 19934 35 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 10

02/17/04 TB 20365 6 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 509/16/04 TB 21230 27 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 J 5

02/22/05 TB 22135 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 505/19/05 TB 22597 18 < 5 < 5 < 5 < 15 6 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 5 < 2 J 3

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 48 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

NW-001JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: Easement North

11/16/96 TB 00710 < 5 < 5 < 5 < 10 55 < 5 < 5 < 5 < 10 < 5 71000 < 5 < 5 < 10 < 5

01/28/97 TB 01069 13000 < 500 < 500 < 500 < 1000 19000 < 500 580 < 500 < 1000 < 500 < 5000 < 500 6300 < 1000 360002/17/97 TB 01718 < 1000 < 1000 < 1000 < 2000 13000 < 1000 J 260 J 340 < 2000 < 1000 < 10000 < 1000 4300 < 2000 210003/16/97 TB 01875 < 500 < 500 < 500 < 1000 14000 < 500 J 470 < 500 < 1000 < 500 < 5000 < 500 4700 < 1000 280004/09/97 TB 02016 < 500 < 500 < 500 < 1000 14000 < 500 590 < 500 < 1000 < 500 < 5000 < 500 5800 < 1000 370006/08/97 TB 02260 < 500 < 500 < 500 < 1000 10000 < 500 810 < 500 < 1000 < 500 < 5000 < 500 5600 J 490 480009/05/97 TB 02769 < 500 < 500 < 500 < 1000 8200 < 500 J 350 < 500 < 1000 < 500 J 670 < 500 3100 < 1000 230012/14/97 TB 03474 < 500 < 500 < 500 < 2000 D 5100 < 500 < 500 J 500 < 500 < 1000 < 1000 < 500 < 1000 < 500 D 3200 < 1500 1880

03/14/98 TB 03984 < 250 < 250 < 250 < 500 4900 < 250 470 < 250 < 500 < 250 < 2500 < 250 3400 < 500 3100

06/04/98 TB 04709 < 250 < 250 < 250 < 1000 2800 < 250 < 250 J 280 < 250 < 500 < 500 < 250 < 500 J 490 < 250 2400 < 750 3000

07/14/98 TB 05036 E 29000 < 250 < 250 < 250 < 1000 3100 < 250 < 250 J 180 < 250 < 500 < 500 < 250 < 500 J 1100 < 250 2250 < 750 2400

10/12/98 TB 06137 16000 < 100 < 100 < 100 < 400 3400 < 100 < 100 260 < 100 < 200 < 200 < 100 < 200 J 620 < 100 2400 < 300 2400

11/02/98 TB 06336 28000 < 100 < 100 < 100 < 400 3100 < 100 < 100 230 < 100 < 200 < 200 < 100 < 200 < 2000 < 100 1900 < 300 2100

11/19/98 TB 06644 980011/19/98 TB 06645 E 17000 < 25 < 25 < 25 < 100 E 2400 < 25 < 25 245 < 25 < 50 < 50 < 25 < 50 835 < 25 E 1700 < 75 E 190012/01/98 TB 06808 8800 < 100 < 100 220 < 400 1100 < 100 J 48 J 68 < 100 < 200 < 200 < 100 < 200 J 460 < 100 660 < 300 670

01/09/99 TB 07181 13000 < 50 < 50 < 50 < 200 D 3500 < 50 < 50 280 < 50 < 100 < 100 < 50 < 100 J 840 < 50 D 2500 < 150 210002/10/99 TB 07455 17000 < 50 < 50 < 50 < 200 D 2900 < 50 < 50 310 < 50 < 100 < 100 < 50 < 100 J 920 < 50 D 2100 < 150 250005/21/99 TB 08360 9800 < 50 < 50 < 50 < 200 2300 < 50 < 50 220 < 50 < 100 < 100 < 50 < 100 < 1000 < 50 1600 < 150 180008/20/99 TB 09364 8700 < 100 < 100 < 100 < 100 1900 < 100 < 100 J 100 < 100 < 1000 < 100 < 100 < 100 < 2000 < 100 1300 < 100 144011/04/99 TB 10344 8775 < 25 < 25 < 25 < 25 2340 < 25 < 25 145 < 25 < 250 < 25 < 25 < 25 630 < 25 1510 < 25 1840

05/20/00 TB 11802 10000 < 100 < 100 < 100 < 100 2100 < 100 J 85 140 < 100 < 1000 < 100 < 100 < 100 < 2000 < 100 1600 < 100 170006/06/00 TB 11903 12000 < 80 < 80 < 80 < 80 2500 < 80 < 80 180 < 80 < 800 < 80 < 80 < 80 < 1600 < 80 1760 < 80 220008/06/00 TB 12349 17000 < 80 < 80 < 80 < 80 3200 < 80 < 80 171 < 80 < 800 < 80 < 80 < 80 < 1600 < 80 2400 < 80 272010/10/00 TB 12762 10000 < 50 < 50 < 50 < 50 D 2300 < 50 < 50 160 < 50 < 500 < 50 < 50 < 50 < 1000 < 50 1600 < 50 81011/04/00 TB 13117 370011/04/00 TB 13118 6400 < 80 < 80 < 80 < 80 2400 < 80 < 80 170 < 80 < 800 < 80 < 80 < 80 < 1600 < 80 1600 < 80 2100

01/06/01 TB 13521 10000 < 80 < 80 < 80 < 80 2100 < 80 < 80 160 < 80 < 800 < 80 < 80 < 80 < 1600 < 80 1500 < 80 188802/24/01 TB 13891 3200 < 20 < 20 < 20 < 20 630 < 20 J 18 J 14 < 20 < 200 < 20 < 20 < 20 J 310 < 20 350 < 20 77204/06/01 TB 14147 720 < 25 < 25 < 25 < 25 1000 < 25 < 25 73 < 25 < 250 < 25 < 25 < 25 580 < 25 490 < 25 1305

05/08/01 TB 14374 6200 < 40 < 40 < 40 < 40 1100 < 40 80 85 < 40 < 400 < 40 < 40 < 40 J 410 < 40 550 < 40 1256

06/03/01 TB 14582 2000 < 50 < 50 < 50 < 50 1700 < 50 < 50 190 < 50 < 500 < 50 < 50 < 50 < 1000 < 50 1100 < 50 1940

07/02/01 TB 14679 7300 < 50 < 50 < 50 < 50 1800 < 50 < 50 210 < 50 < 500 < 50 < 50 < 50 J 840 < 50 1300 < 50 1910

08/06/01 TB 14879 D 3600 < 50 < 50 < 50 < 50 470 < 50 < 50 < 50 < 50 < 500 < 50 < 50 < 50 J 620 < 50 210 < 50 570

09/04/01 TB 15189 D 6300 < 5 < 5 < 5 14 D 730 < 5 9 52 < 5 < 50 < 5 < 5 < 5 900 < 5 D 360 < 5 97810/04/01 TB 15303 D 4200 < 20 < 20 < 20 < 20 640 < 20 < 20 31 < 20 < 200 < 20 < 20 < 20 1700 < 20 380 < 20 748

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 49 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

NW-001JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: Easement North

10/30/01 TB 15435 1200 < 50 < 50 < 50 < 50 J 47 < 50 < 50 < 50 < 50 < 500 < 50 < 50 < 50 1000 < 50 J 40 < 50 14012/06/01 TB 15863 D 660 < 10 < 10 < 10 < 10 230 < 10 < 10 11 < 10 < 100 < 10 < 10 < 10 330 < 10 94 < 10 180

01/03/02 TB 16094 D 3400 < 20 < 20 < 20 < 20 530 < 20 < 20 37 < 20 < 200 < 20 < 20 < 20 3000 < 20 320 < 20 45201/26/02 TB 16261 D 2600 < 20 < 20 < 20 < 20 410 < 20 < 20 J 19 < 20 < 200 < 20 < 20 < 20 410 < 20 190 < 20 26003/29/02 TB 16757 D 1700 < 20 < 20 < 20 < 20 480 < 20 J 9 44 < 20 < 200 < 20 < 20 < 20 440 < 20 270 < 20 33605/01/02 TB 16894 D 3900 < 20 < 20 < 20 < 20 720 < 20 J 15 65 < 20 < 200 < 20 < 20 < 20 900 < 20 390 < 20 39606/13/02 TB 17297 D 1600 < 13 < 13 < 13 < 13 D 710 < 13 J 9 130 < 13 < 125 < 13 < 13 < 13 D 1000 < 13 D 440 < 13 69807/11/02 TB 17409 D 1100 < 13 < 13 < 13 < 13 550 < 13 < 13 63 < 13 < 125 < 13 < 13 < 13 470 < 13 330 < 13 30808/10/02 TB 17667 D 2300 < 20 < 20 < 20 < 20 650 < 20 < 20 82 < 20 < 200 < 20 < 20 < 20 < 400 < 20 350 < 20 34009/19/02 TB 17952 D 720 < 10 < 10 < 10 < 10 340 < 10 < 10 89 < 10 < 100 < 10 < 10 < 10 340 < 10 130 < 10 254

10/01/02 TB 18009 D 12000 < 20 < 20 < 20 < 20 630 < 20 < 20 110 < 20 < 200 < 20 < 20 < 20 1200 < 20 340 < 20 484

11/01/02 TB 18114 D 4100 < 5 < 5 < 5 < 5 D 540 < 5 < 5 99 < 5 < 50 < 5 < 5 < 5 580 < 5 D 260 < 5 460

11/19/02 TB 18201 D 6800 < 20 < 20 < 20 < 20 664 < 20 < 20 104 < 20 < 200 < 20 < 20 < 20 508 < 20 356 < 20 580

12/05/02 TB 18332 D 1200 < 5 < 5 < 5 < 5 230 < 5 < 5 18 < 5 < 50 < 5 < 5 < 5 1100 < 5 57 < 5 150

01/02/03 TB 18394 450 < 10 < 10 < 10 < 10 170 < 10 < 10 J 6 < 10 < 100 < 10 < 10 < 10 470 < 10 19 < 10 11002/12/03 TB 18676 D 2400 < 5 < 5 < 5 < 5 D 340 < 5 < 5 22 < 5 < 50 < 5 < 5 < 5 430 < 5 97 < 5 27804/15/03 TB 19110 4140 < 100 < 100 < 100 J 398 886 < 100 < 100 116 < 100 < 400 < 80 < 100 < 100 3060 < 100 415 < 40 57505/06/03 TB 19144 3540 < 20 < 20 20 < 60 824 < 20 44 92 < 20 < 80 < 16 < 20 < 20 < 200 < 20 488 < 8 24006/13/03 TB 19382 5150 < 5 < 5 < 5 < 15 705 < 5 33 162 < 5 < 20 < 4 < 5 < 5 331 < 5 545 < 2 78007/08/03 TB 19462 12400 < 5 < 5 < 5 < 15 1090 < 5 39 240 < 5 < 20 < 4 < 5 < 5 502 < 5 832 < 2 97608/06/03 TB 19523 7280 < 10 < 10 < 10 < 30 570 < 10 < 10 88 < 10 < 40 < 8 < 10 < 10 306 < 10 454 < 4 56009/17/03 TB 19823 4450 < 50 < 50 < 50 < 150 280 < 50 < 50 70 < 50 < 200 < 40 < 50 < 50 < 500 < 50 230 < 20 34010/13/03 TB 19906 8360 < 10 < 10 < 10 < 30 800 < 10 < 10 180 < 10 < 40 < 8 < 10 < 10 540 < 10 640 < 4 70411/04/03 TB 19918 6480 < 125 < 125 < 125 < 375 450 < 125 < 125 < 125 < 125 < 500 < 100 < 125 < 125 < 1250 < 125 300 < 50 47512/11/03 TB 20158 2240 < 50 < 50 < 50 < 150 160 < 50 < 50 < 50 < 50 < 200 < 40 < 50 < 50 < 500 < 50 100 < 20 160

02/17/04 TB 20366 4950 < 50 < 50 < 50 < 150 389 < 50 < 50 82 < 50 < 200 < 40 < 50 < 50 < 500 < 50 239 < 20 37704/08/04 TB 20646 3680 < 125 < 125 < 125 < 375 275 < 125 < 125 < 125 < 125 < 500 < 100 < 125 < 125 < 1250 < 125 175 < 50 26405/20/04 TB 20756 5470 < 125 < 125 < 125 < 375 500 < 125 < 125 < 125 < 125 < 500 < 100 < 125 < 125 < 1250 < 125 397 < 50 47106/28/04 TB 20820 5160 < 125 < 125 < 125 < 375 1040 < 125 < 125 221 < 125 < 500 < 100 < 125 < 125 1860 < 125 788 < 50 87609/10/04 TB 21180 3710 < 50 < 50 < 50 < 150 159 < 50 < 50 < 50 < 50 < 200 < 40 < 50 < 50 < 500 < 50 119 < 20 24010/19/04 TB 21344 6220 < 125 < 125 < 125 < 375 402 < 125 < 125 < 125 < 125 < 500 < 100 < 125 < 125 < 1250 < 125 333 < 50 432

11/16/04 TB 21404 5450 < 125 < 125 < 125 < 375 214 < 125 < 125 < 125 < 125 < 500 < 100 < 125 < 125 < 1250 < 125 < 125 < 50 266

12/03/04 TB 21520 8710 < 125 < 125 < 125 < 375 671 < 125 < 125 148 < 125 < 500 < 100 < 125 < 125 < 1250 < 125 454 < 50 603

01/11/05 TB 21760 6950 < 250 < 250 < 250 < 750 369 < 250 < 250 < 250 < 250 < 1000 < 200 < 250 < 250 < 2500 < 250 < 250 < 100 J 137

02/23/05 TB 22184 12700 < 250 < 250 < 250 < 750 1330 < 250 < 250 < 250 < 250 < 1000 < 200 < 250 < 250 < 2500 < 250 898 < 100 96304/09/05 TB 22317 9490 < 250 < 250 < 250 < 750 758 < 250 < 250 < 250 < 250 < 1000 < 200 < 250 < 250 < 2500 < 250 564 < 100 586

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 50 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

NW-002JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: Easement North

01/19/97 TB 01019 < 5000 < 5000 < 5000 < 10000 73000 < 5000 < 5000 < 5000 < 10000 < 5000 < 50000 < 5000 < 5000 < 10000 < 500001/28/97 TB 01070 2300 < 5000 < 5000 < 5000 < 10000 110000 < 5000 < 5000 < 5000 < 10000 < 5000 < 50000 < 5000 < 5000 < 10000 < 500002/17/97 TB 01719 < 5000 < 5000 < 5000 < 10000 89000 < 5000 < 5000 J 1700 < 10000 < 5000 < 50000 < 5000 < 5000 < 10000 < 500003/16/97 TB 01876 < 5000 < 5000 < 5000 18000 110000 < 5000 < 5000 10000 < 10000 < 5000 < 50000 < 5000 < 5000 < 10000 < 500004/09/97 TB 02017 < 5000 < 5000 < 5000 < 10000 120000 < 5000 < 5000 < 5000 < 10000 < 5000 < 50000 < 5000 < 5000 < 10000 < 500005/07/97 TB 02109 < 5000 < 5000 < 5000 < 10000 73000 < 5000 < 5000 < 5000 < 10000 < 5000 < 50000 < 5000 < 5000 < 10000 < 500008/14/97 TB 02581 < 2500 < 2500 < 2500 < 5000 38000 < 2500 < 2500 < 2500 < 5000 < 2500 < 25000 < 2500 < 2500 < 5000 < 250011/15/97 TB 03308 < 500 < 500 < 500 3000 13000 < 500 < 500 < 1000 < 500 < 1000 < 500 < 500 < 1000 4000 < 500 < 1000 < 1500 < 500

02/15/98 TB 03790 < 250 < 250 < 250 < 500 6400 < 250 < 250 < 250 < 500 < 250 < 2500 < 250 280 < 500 J 15003/14/98 TB 03985 < 250 < 250 < 250 < 500 7300 < 250 < 250 < 250 < 500 < 250 < 2500 < 250 390 < 500 < 250

04/12/98 TB 04274 490 < 125 < 125 < 125 J 150 3600 < 125 < 125 < 125 J 210 < 125 E 25000 < 125 290 < 250 310

07/14/98 TB 05037 4500 < 250 < 250 < 250 < 1000 3300 < 250 < 250 < 500 < 250 < 500 < 500 < 250 < 500 J 780 < 250 J 200 < 750 < 25009/16/98 TB 05838 1400 < 100 < 100 < 100 < 400 1800 < 100 < 100 < 200 < 100 < 200 < 200 < 100 < 200 J 690 < 100 J 150 < 300 J 94

10/12/98 TB 06138 2200 < 50 < 50 < 50 < 200 870 < 50 < 50 < 100 < 50 < 100 < 100 < 50 < 100 < 1000 < 50 100 < 150 J 83

01/12/99 TB 07204 2200 < 50 < 50 < 50 < 200 1100 < 50 < 50 < 100 < 50 < 100 < 100 < 50 < 100 < 1000 < 50 170 < 150 J 14002/10/99 TB 07457 1200 < 25 < 25 < 25 < 100 640 < 25 < 25 < 50 < 25 < 50 < 50 < 25 < 50 < 500 < 25 52 < 75 J 7205/23/99 TB 08396 380 < 10 < 10 < 10 < 40 540 < 10 < 10 < 20 < 10 < 20 < 20 < 10 < 20 < 200 < 10 J 12 < 30 4308/20/99 TB 09376 3900 < 25 < 25 < 25 < 25 510 < 25 < 25 < 25 < 25 < 250 < 25 < 25 < 25 < 500 < 25 J 20 < 25 J 5011/09/99 TB 10417 1700 < 10 < 10 < 10 < 10 350 < 10 < 10 < 10 < 10 < 100 < 10 < 10 < 10 J 160 < 10 48 < 10 140

05/20/00 TB 11803 2000 < 10 < 10 < 10 < 10 320 < 10 < 10 < 10 < 10 < 100 < 10 < 10 < 10 < 200 < 10 23 < 10 11008/06/00 TB 12350 2600 < 10 < 10 < 10 21 D 2100 < 10 < 10 < 10 < 10 < 100 < 10 < 10 < 10 J 200 < 10 210 < 10 21810/10/00 TB 12763 1200 < 40 < 40 < 40 < 40 1200 < 40 < 40 < 40 < 40 < 400 < 40 < 40 < 40 < 800 < 40 130 < 40 168

01/06/01 TB 13522 2200 < 10 < 10 < 10 < 10 D 1100 < 10 < 10 16 < 10 < 100 < 10 < 10 < 10 < 200 < 10 340 < 10 25002/24/01 TB 13892 2600 < 10 < 10 < 10 20 D 1100 < 10 < 10 20 < 10 < 100 < 10 < 10 < 10 400 < 10 300 < 10 31803/14/01 TB 14007 2200 < 25 < 25 < 25 < 25 830 < 25 < 25 J 15 < 25 < 250 < 25 < 25 < 25 < 500 < 25 310 < 25 25004/06/01 TB 14148 180 < 10 < 10 < 10 16 D 1300 < 10 < 10 40 < 10 < 100 < 10 < 10 < 10 1300 < 10 540 < 10 48205/08/01 TB 14375 3100 < 10 < 10 < 10 < 10 670 < 10 < 10 21 < 10 < 100 < 10 < 10 < 10 1400 < 10 190 < 10 61806/03/01 TB 14583 330 < 10 < 10 < 10 < 10 D 500 < 10 < 10 < 10 < 10 < 100 < 10 < 10 < 10 570 < 10 120 < 10 19407/02/01 TB 14680 6200 < 25 < 25 < 25 < 25 700 < 25 < 25 26 < 25 < 250 < 25 < 25 < 25 580 < 25 190 < 25 29008/30/01 TB 15167 530 < 20 < 20 < 20 < 20 95 < 20 < 20 22 < 20 < 200 < 20 < 20 < 20 670 < 20 J 14 < 20 52

09/04/01 TB 15190 780 < 25 < 25 < 25 < 25 190 < 25 < 25 < 25 < 25 < 250 < 25 < 25 < 25 760 < 25 45 < 25 90

10/04/01 TB 15304 D 1100 < 10 < 10 < 10 < 10 290 < 10 < 10 < 10 < 10 < 100 < 10 < 10 < 10 830 < 10 67 < 10 134

10/30/01 TB 15436 180 < 5 < 5 < 5 < 5 28 < 5 < 5 < 5 < 5 < 50 J 3 < 5 < 5 580 < 5 5 < 5 29

12/06/01 TB 15864 D 1200 < 10 < 10 < 10 < 10 280 < 10 < 10 J 8 < 10 < 100 < 10 < 10 < 10 650 < 10 64 < 10 144

01/03/02 TB 16095 D 460 < 5 < 5 < 5 5 100 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 1500 < 5 20 < 5 4701/26/02 TB 16262 160 < 5 < 5 < 5 < 5 43 < 5 < 5 < 5 < 5 < 50 6 < 5 < 5 1300 < 5 6 < 5 15

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 51 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

NW-002JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: Easement North

03/29/02 TB 16758 D 1100 < 5 < 5 < 5 < 5 180 < 5 < 5 6 < 5 < 50 7 < 5 < 5 1300 < 5 38 < 5 10405/01/02 TB 16895 D 1000 < 5 < 5 < 5 < 5 140 < 5 < 5 6 < 5 < 50 7 < 5 < 5 1100 < 5 30 < 5 8806/13/02 TB 17298 110 < 5 < 5 < 5 < 5 69 < 5 < 5 J 2 < 5 < 50 6 < 5 < 5 900 < 5 13 < 5 3707/11/02 TB 17410 D 390 < 5 < 5 < 5 < 5 120 < 5 < 5 J 4 < 5 < 50 7 < 5 < 5 900 < 5 18 < 5 6008/10/02 TB 17668 D 460 < 5 < 5 < 5 < 5 110 < 5 < 5 J 4 < 5 < 50 6 < 5 < 5 1000 < 5 14 < 5 4909/19/02 TB 17953 200 < 5 < 5 < 5 < 5 110 < 5 < 5 J 3 < 5 < 50 < 5 < 5 < 5 860 < 5 9 < 5 4810/01/02 TB 18010 D 1800 < 5 < 5 < 5 < 5 110 < 5 < 5 9 < 5 < 50 6 < 5 < 5 1200 < 5 7 < 5 4411/01/02 TB 18115 D 590 < 5 < 5 < 5 < 5 83 < 5 < 5 J 2 < 5 < 50 6 < 5 < 5 870 < 5 6 < 5 4111/19/02 TB 18202 D 1500 < 5 < 5 < 5 < 5 89 < 5 < 5 < 5 < 5 < 50 7 < 5 < 5 1100 < 5 5 < 5 4412/05/02 TB 18337 330 < 5 < 5 < 5 < 5 92 < 5 < 5 J 2 < 5 < 50 < 5 < 5 < 5 1300 < 5 J 5 < 5 41

01/02/03 TB 18395 D 230 < 5 < 5 < 5 < 5 85 < 5 < 5 J 3 < 5 < 50 < 5 < 5 < 5 750 < 5 J 5 < 5 37

02/12/03 TB 18677 D 160 < 5 < 5 < 5 < 5 37 < 5 < 5 J 1 < 5 < 5 8 < 5 < 5 1200 < 5 J 3 < 5 27

04/15/03 TB 19111 101 < 5 < 5 < 5 < 15 27 < 5 < 5 < 5 < 5 < 20 J 5 < 5 < 5 725 < 5 < 5 < 2 17

05/06/03 TB 19145 232 < 5 < 5 < 5 < 15 28 < 5 < 5 < 5 < 5 < 20 J 4 < 5 < 5 861 < 5 < 5 < 2 25

06/13/03 TB 19383 134 < 5 < 5 < 5 J 21 26 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 395 < 5 < 5 < 2 1407/08/03 TB 19463 492 < 5 < 5 < 5 < 15 49 < 5 < 5 < 5 < 5 < 20 J 5 < 5 < 5 360 < 5 < 5 < 2 2208/06/03 TB 19524 448 < 5 < 5 < 5 < 15 62 < 5 < 5 < 5 < 5 < 20 J 5 < 5 < 5 785 < 5 < 5 < 2 2309/17/03 TB 19824 84 < 5 < 5 < 5 < 15 38 < 5 < 5 < 5 < 5 < 20 J 5 < 5 < 5 638 < 5 < 5 < 2 1310/13/03 TB 19907 67 < 5 < 5 < 5 < 15 56 < 5 < 5 < 5 < 5 < 20 J 4 < 5 < 5 468 < 5 < 5 < 2 2111/04/03 TB 19919 37 < 5 < 5 < 5 < 15 47 < 5 < 5 < 5 < 5 < 20 J 4 < 5 < 5 469 < 5 < 5 < 2 2112/11/03 TB 20159 56 < 5 < 5 < 5 < 15 35 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 444 < 5 < 5 < 2 15

02/12/04 TB 20335 13 < 5 < 5 < 5 < 15 12 < 5 < 5 < 5 < 5 < 20 J 4 < 5 < 5 452 < 5 < 5 < 2 804/08/04 TB 20647 30 < 5 < 5 < 5 < 15 7 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 319 < 5 < 5 < 2 J 206/28/04 TB 20821 98 < 5 < 5 < 5 < 15 23 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 599 < 5 < 5 < 2 1309/10/04 TB 21181 11 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 335 < 5 < 5 < 2 J 3

02/23/05 TB 22185 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 505/19/05 TB 22599 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 52 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

NW-004JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: Easement North

02/17/97 TB 01720 < 250 < 250 < 250 < 500 2800 < 250 < 250 J 80 < 500 < 250 < 2500 < 250 J 75 < 500 < 25003/16/97 TB 01874 < 250 < 250 < 250 < 500 2800 < 250 < 250 < 250 < 500 < 250 < 2500 < 250 < 250 < 500 < 25004/09/97 TB 02010 < 170 < 170 < 170 < 330 2400 < 170 < 170 < 170 < 330 < 170 J 330 < 170 J 97 < 330 < 17006/30/97 TB 02405 < 100 < 100 < 100 < 200 2700 < 100 < 100 < 100 < 200 < 100 1200 < 100 420 < 200 J 4210/04/97 TB 02945 < 10 < 10 < 10 < 20 290 < 10 J 7 < 10 < 20 < 10 100 < 10 52 < 20 43

01/18/98 TB 03678 < 25 < 25 < 5 < 100 750 < 25 < 25 < 50 < 25 < 5 < 50 < 25 < 50 < 25 61 < 75 6104/13/98 TB 04290 290 < 25 < 25 < 25 J 38 600 < 25 < 25 < 25 < 50 < 25 810 < 25 57 < 50 8107/14/98 TB 05038 E 3140 < 25 < 25 < 25 < 100 240 < 25 < 25 < 50 < 25 < 50 < 50 < 25 < 50 J 230 < 25 J 19 < 75 3910/12/98 TB 06139 630 < 10 < 10 < 10 < 40 86 < 10 < 10 < 20 < 10 < 20 < 20 < 10 < 20 < 100 < 10 J 7 < 30 J 14

01/09/99 TB 07182 J 72 < 5 < 5 < 5 27 89 < 5 < 5 J 7 < 5 < 10 < 10 < 5 < 10 940 < 5 J 4 < 15 15

02/10/99 TB 07456 690 < 5 < 5 < 5 < 20 49 < 5 < 5 J 2 < 5 < 10 < 10 < 5 < 10 < 100 < 5 14 < 15 J 22

05/21/99 TB 08361 850 < 5 < 5 < 5 < 20 81 < 5 < 5 J 2 < 5 < 10 < 10 < 5 < 10 < 100 < 5 17 < 15 48

08/20/99 TB 09367 2000 < 5 < 5 < 5 < 5 120 < 5 < 5 J 2 < 5 < 50 < 5 < 5 < 5 < 100 < 5 15 < 5 55

11/04/99 TB 10345 550 < 5 < 5 < 5 < 5 110 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 J 4 < 5 50

05/20/00 TB 11804 310 < 5 < 5 < 5 < 5 64 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 J 1410/17/00 TB 12833 600 < 5 < 5 < 5 < 5 110 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 44

02/24/01 TB 13902 2000 < 5 < 5 < 5 < 5 D 350 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 60 < 5 16305/08/01 TB 14376 12000 < 40 < 40 < 40 < 40 940 < 40 < 40 < 40 < 40 < 400 < 40 < 40 < 40 < 800 < 40 240 < 40 34408/25/01 TB 15114 D 1800 < 25 < 25 < 25 < 25 500 < 25 < 25 < 25 < 25 < 250 < 25 < 25 < 25 1100 < 25 70 < 25 15511/07/01 TB 15557 D 1600 < 20 < 20 < 20 < 20 420 < 20 < 20 < 20 < 20 < 200 < 20 < 20 < 20 J 320 < 20 89 < 20 60

02/28/02 TB 16586 D 410 < 5 < 5 < 5 < 5 58 < 5 < 5 J 2 < 5 < 50 < 5 < 5 < 5 410 < 5 15 < 5 3605/10/02 TB 16985 D 740 < 5 < 5 < 5 < 5 48 < 5 < 5 J 2 < 5 < 50 < 5 < 5 < 5 240 < 5 14 < 5 4809/12/02 TB 17906 140 < 5 < 5 < 5 < 5 6 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 J 2

02/12/03 TB 18678 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 505/07/03 TB 19175 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 508/07/03 TB 19556 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 511/04/03 TB 19924 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

02/17/04 TB 20368 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 509/10/04 TB 21182 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

02/23/05 TB 22187 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 505/19/05 TB 22600 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 53 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

NW-005JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: Easement North

02/27/02 TB 16579 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 5

02/11/03 TB 18659 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 508/06/03 TB 19526 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

02/17/04 TB 20369 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 509/14/04 TB 21195 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 510/19/04 TB 21345 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 511/09/04 TB 21391 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 512/02/04 TB 21511 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

01/11/05 TB 21761 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

02/22/05 TB 22152 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 506/14/05 TB 22652 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 54 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

NW-006JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: Easement North

02/27/02 TB 16580 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 5

02/11/03 TB 18660 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 508/27/03 TB 19769 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

02/12/04 TB 20331 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 509/14/04 TB 21196 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 510/19/04 TB 21346 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 511/16/04 TB 21405 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 512/03/04 TB 21521 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

01/11/05 TB 21762 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

02/22/05 TB 22153 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 504/09/05 TB 22319 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 55 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

NW-009JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: Easement North

02/17/97 TB 01721 < 5000 < 5000 < 5000 < 10000 37000 < 5000 < 5000 J 1600 < 10000 < 5000 < 50000 < 5000 5100 < 10000 < 500003/16/97 TB 01871 < 1200 < 1200 < 1200 < 2500 23000 < 1200 < 1200 2600 < 2500 < 1200 < 12000 < 1200 3000 < 2500 < 120004/09/97 TB 02011 < 2500 < 2500 < 2500 < 5000 30000 < 2500 < 2500 < 2500 < 5000 < 2500 < 25000 < 2500 2900 < 5000 < 250006/30/97 TB 02406 < 5000 < 5000 < 5000 < 10000 83000 < 5000 < 5000 < 5000 < 10000 < 5000 < 50000 < 5000 12000 < 10000 < 500009/26/97 TB 02898 < 2500 < 2500 J 1300 < 5000 59000 < 2500 < 2500 < 2500 < 5000 < 2500 J 6600 < 2500 9700 < 5000 < 250010/05/97 TB 02954 < 5000 < 5000 < 5000 < 10000 72000 < 5000 < 5000 < 5000 < 10000 < 5000 < 50000 < 5000 11000 < 10000 < 5000

02/15/98 TB 03793 < 1000 < 1000 < 1000 < 2000 33000 < 1000 < 1000 < 1000 < 2000 < 1000 < 10000 < 1000 8100 < 2000 J 44003/14/98 TB 03986 < 1000 < 1000 < 1000 J 1200 33000 < 1000 < 1000 < 1000 < 2000 < 1000 < 10000 < 1000 7500 < 2000 < 100004/13/98 TB 04297 < 1000 < 1000 < 1000 < 1000 < 2000 28000 < 1000 < 1000 < 1000 < 2000 < 1000 < 10000 < 1000 5400 < 2000 < 100005/11/98 TB 04532 < 1000 < 1000 < 1000 < 1000 B 3700 34000 < 1000 < 1000 < 1000 < 2000 < 1000 < 10000 < 1000 8000 < 2000 < 1000

07/14/98 TB 05039 J 990 < 500 < 500 < 500 < 2000 24000 < 500 < 500 < 1000 < 500 < 1000 < 1000 < 500 < 1000 < 5000 < 500 5400 < 1500 < 50008/03/98 TB 05313 < 5000 < 2500 < 2500 < 2500 < 10000 25000 < 2500 < 2500 < 5000 < 2500 < 5000 < 5000 < 2500 < 5000 < 25000 < 2500 J 5000 < 7500 < 250010/12/98 TB 06140 < 20000 < 1000 < 1000 < 1000 < 4000 34000 < 1000 < 1000 < 2000 < 1000 < 2000 < 2000 < 1000 < 2000 < 20000 < 1000 7000 < 3000 < 100011/02/98 TB 06337 J 3000 < 500 < 500 < 500 < 2000 D 55000 < 500 < 500 J 170 < 500 < 1000 < 1000 < 500 < 1000 < 10000 < 500 20000 < 1500 J 860

12/01/98 TB 06809 J 750 < 750 < 750 < 750 < 3000 E 32000 < 750 < 750 < 1500 < 750 < 1500 < 1500 < 750 < 1500 < 15000 < 750 6300 < 2250 < 750

01/13/99 TB 07210 J 790 < 500 < 500 < 500 < 2000 D 32000 < 500 < 500 J 190 < 500 < 1000 < 1000 < 500 < 1000 < 10000 < 500 7200 < 1500 J 21002/10/99 TB 07458 < 20000 < 1000 < 1000 < 1000 < 4000 17000 < 1000 < 1000 < 2000 < 1000 < 2000 < 2000 < 1000 < 2000 < 20000 < 1000 4400 < 3000 < 100003/18/99 TB 07788 < 20000 < 1000 < 1000 < 1000 J 3700 21000 < 1000 < 1000 < 2000 < 1000 < 2000 < 2000 < 1000 < 2000 41000 < 1000 5600 < 3000 J 20004/11/99 TB 08002 < 20000 < 1000 < 1000 < 1000 J 1800 29000 < 1000 < 1000 J 200 < 1000 < 2000 < 2000 < 1000 < 2000 < 20000 < 1000 6800 < 3000 J 25005/21/99 TB 08362 J 1100 < 200 < 200 < 200 < 800 5600 < 200 < 200 < 400 < 200 < 400 < 400 < 200 < 400 < 4000 < 200 1200 < 600 J 22006/05/99 TB 08565 < 4000 < 200 < 200 < 200 < 800 4100 < 200 < 200 < 400 < 200 < 400 < 400 < 200 < 400 < 4000 < 200 560 < 600 < 20007/06/99 TB 08882 J 90 < 25 < 25 < 25 < 100 640 < 25 < 25 < 50 < 25 < 50 < 50 < 25 < 50 < 500 < 25 J 45 < 75 < 2508/20/99 TB 09366 1100 < 10 < 10 < 10 < 10 D 560 < 10 < 10 < 10 < 10 < 100 < 10 < 10 < 10 < 200 < 10 30 < 10 J 2209/09/99 TB 09629 730 < 5 < 5 < 5 < 5 170 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 10 < 5 < 510/08/99 TB 10044 480 < 20 < 20 < 20 < 20 670 < 20 < 20 < 20 < 20 < 200 < 20 < 20 < 20 < 400 < 20 110 < 20 J 2011/04/99 TB 10346 1330 < 20 < 20 < 20 < 20 4160 < 20 < 20 J 16 < 20 < 200 < 20 < 20 < 20 < 400 < 20 730 < 20 84

05/20/00 TB 11805 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 506/07/00 TB 11932 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 508/06/00 TB 12351 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 J 99 < 5 < 5 < 5 < 510/17/00 TB 12831 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 570 < 5 < 5 < 5 < 5

01/06/01 TB 13523 560 < 5 < 5 < 5 < 5 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 502/23/01 TB 13874 100 < 5 < 5 < 5 < 5 15 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 170 < 5 < 5 < 5 < 505/08/01 TB 14377 17000 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 1000 < 100 < 100 < 100 < 2000 < 100 < 100 < 100 < 10008/06/01 TB 14880 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 508/25/01 TB 15116 D 590 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 509/04/01 TB 15191 96 < 5 < 5 < 5 < 5 J 3 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 J 410/04/01 TB 15305 17 < 5 < 5 < 5 < 5 J 2 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 5

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 56 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

NW-009JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: Easement North

10/30/01 TB 15437 35 < 5 < 5 < 5 J 5 8 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 512/06/01 TB 15865 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 5

01/03/02 TB 16096 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 501/26/02 TB 16263 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 502/26/02 TB 16560 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 503/29/02 TB 16759 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 505/01/02 TB 16896 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 506/13/02 TB 17299 11 < 5 < 5 < 5 < 5 J 2 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 J 707/11/02 TB 17411 57 < 5 < 5 < 5 < 5 J 2 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 J 608/10/02 TB 17669 J 8 < 5 < 5 < 5 < 5 J 3 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 J 6

09/12/02 TB 17907 29 < 5 < 5 < 5 < 5 10 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 J 1 < 5 19

09/19/02 TB 17954 34 < 5 < 5 < 5 < 5 J 4 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 24

10/01/02 TB 18011 160 < 5 < 5 < 5 < 5 J 3 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 24

11/01/02 TB 18116 110 < 10 < 10 < 10 < 10 J 3 < 10 < 10 < 10 < 10 < 100 < 10 < 10 < 10 < 200 < 10 < 10 < 10 20

11/11/02 TB 18187 150 < 5 < 5 < 5 < 5 J 3 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 J 1 < 5 2611/19/02 TB 18203 D 190 < 5 < 5 < 5 < 5 J 3 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 2712/05/02 TB 18333 33 < 5 < 5 < 5 < 5 J 2 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 1000 < 5 < 5 < 5 18

01/02/03 TB 18396 J 5 < 5 < 5 < 5 < 5 J 2 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 1002/11/03 TB 18661 < 10 < 5 < 5 < 5 < 5 J 2 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 J 404/15/03 TB 19112 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 505/06/03 TB 19146 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 506/13/03 TB 19384 14 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 1407/08/03 TB 19464 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 1308/06/03 TB 19527 28 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 1909/17/03 TB 19825 27 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 83 < 5 < 5 < 2 2110/14/03 TB 19908 27 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 7 < 2 2911/06/03 TB 19935 36 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 2512/11/03 TB 20160 35 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 23

02/12/04 TB 20321 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 709/10/04 TB 21185 27 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 57 < 5 < 5 < 2 1610/19/04 TB 21347 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 55 < 5 < 5 < 2 < 5

11/09/04 TB 21392 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 512/02/04 TB 21512 12 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 J 2

01/11/05 TB 21763 29 < 5 < 5 < 5 < 15 8 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 5 < 2 9

02/22/05 TB 22154 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 505/19/05 TB 22603 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 57 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

NW-012JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: Easement North

01/17/97 TB 01003 < 25 < 25 < 25 < 50 300 < 25 < 25 < 25 < 50 < 25 < 250 < 25 100 < 50 7

02/28/02 TB 16588 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 5

01/28/03 TB 18543 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 508/06/03 TB 19530 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

02/17/04 TB 20372 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 509/16/04 TB 21232 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 510/19/04 TB 21348 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 511/16/04 TB 21406 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 512/02/04 TB 21513 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

01/11/05 TB 21764 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 502/22/05 TB 22156 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 504/09/05 TB 22321 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 58 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

NW-013JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: Easement North

01/17/97 TB 01004 < 2500 < 2500 < 2500 < 5000 140000 < 2500 < 2500 < 2500 < 5000 < 2500 < 25000 < 2500 29000 < 5000 130002/17/97 TB 01722 < 2500 < 2500 < 2500 < 5000 48000 < 2500 < 2500 < 2500 < 5000 < 2500 < 25000 < 2500 9600 < 5000 < 250003/16/97 TB 01873 < 2500 < 2500 < 2500 < 5000 42000 < 2500 < 2500 < 2500 < 5000 < 2500 < 25000 < 2500 7100 < 5000 < 250004/09/97 TB 02013 < 2500 < 2500 < 2500 < 5000 42000 < 2500 < 2500 < 2500 < 5000 < 2500 < 25000 < 2500 7100 < 5000 < 250005/07/97 TB 02111 < 1200 < 1200 < 1200 < 2500 33000 < 1200 < 1200 < 1200 < 2500 < 1200 30000 < 1200 5800 < 2500 < 120006/08/97 TB 02261 < 5000 < 5000 < 5000 < 10000 71000 < 5000 < 5000 < 5000 < 10000 < 5000 530000 < 5000 14000 < 10000 < 500006/30/97 TB 02407 < 2500 < 2500 < 2500 < 5000 40000 < 2500 < 2500 < 2500 < 5000 < 2500 < 25000 < 2500 6600 < 5000 < 250010/05/97 TB 02955 < 5000 < 5000 < 5000 < 10000 72000 < 5000 < 5000 < 5000 < 10000 < 5000 < 50000 < 5000 14000 < 10000 < 500012/14/97 TB 03475 < 250 < 250 < 250 < 1000 9600 < 250 < 250 J 130 < 250 < 500 < 500 < 250 < 500 < 250 3200 < 750 440

01/18/98 TB 03680 < 250 < 250 < 250 < 1000 9200 < 250 < 250 J 130 < 250 < 250 < 500 < 250 < 500 < 250 3100 < 750 380

02/15/98 TB 03795 < 500 < 500 < 500 < 1000 15000 < 500 < 500 < 500 < 1000 < 500 < 5000 < 500 3700 < 1000 J 250

03/14/98 TB 03987 < 500 < 500 < 500 J 610 10000 < 500 < 500 < 500 < 1000 < 500 < 5000 < 500 3100 < 1000 < 50004/13/98 TB 04296 140 < 125 < 125 < 125 < 250 3900 < 125 < 125 < 125 < 250 < 125 J 380 < 125 1400 < 250 130

05/11/98 TB 04533 < 500 < 500 < 500 < 500 B 2400 10000 < 500 < 500 < 500 < 1000 < 500 < 5000 < 500 4500 < 1000 < 50008/03/98 TB 05315 1400 < 500 < 500 < 500 < 2000 7800 < 500 < 500 < 1000 < 500 < 1000 < 1000 < 500 < 1000 < 5000 < 500 < 1000 < 1500 < 50009/16/98 TB 05839 J 420 < 250 < 250 < 250 < 1000 6000 < 250 < 250 < 500 < 250 < 500 < 500 < 250 < 500 < 2500 < 250 1600 < 750 J 5010/12/98 TB 06141 J 520 < 250 < 250 < 250 < 1000 4800 < 250 < 250 < 500 < 250 < 500 < 500 < 250 < 500 < 5000 < 250 1400 < 750 J 6211/02/98 TB 06338 J 270 < 250 < 250 < 250 < 1000 4000 < 250 < 250 < 500 < 250 < 500 < 500 < 250 < 500 < 5000 < 250 1200 < 750 < 25012/02/98 TB 06838 J 290 < 100 < 100 < 100 < 400 3400 < 100 < 100 J 23 < 100 < 200 < 200 < 100 < 200 < 2000 < 100 1200 < 300 J 73

01/13/99 TB 07212 J 200 < 250 < 250 < 250 < 1000 3800 < 250 < 250 < 500 < 250 < 500 < 500 < 250 < 500 < 5000 < 250 1200 < 750 < 25002/11/99 TB 07464 < 2000 < 100 < 100 < 100 < 400 2500 < 100 < 100 < 200 < 100 < 200 < 200 < 100 < 200 < 2000 < 100 750 < 300 J 3605/22/99 TB 08385 280 < 10 < 10 < 10 < 40 320 < 10 < 10 J 15 < 10 < 20 < 20 < 10 < 20 < 200 < 10 340 < 30 13008/20/99 TB 09388 170 < 25 < 25 < 25 < 25 920 < 25 < 25 J 20 < 25 < 250 < 25 < 25 < 25 < 500 < 25 570 < 25 15010/08/99 TB 10029 190 < 25 < 25 < 25 < 25 430 < 25 < 25 J 13 < 25 < 250 < 25 < 25 < 25 < 500 < 25 570 < 25 13011/12/99 TB 10451 450 < 10 < 10 < 10 < 10 D 520 < 10 < 10 26 < 10 < 100 < 10 < 10 < 10 < 200 < 10 D 880 < 10 55212/13/99 TB 10724 370 < 40 < 40 < 40 < 40 1150 < 40 < 40 < 40 < 40 < 400 < 40 < 40 < 40 < 800 < 40 980 < 40 220

02/10/00 TB 11163 690 < 40 < 40 < 40 < 40 D 19000 < 40 < 40 690 < 40 < 400 < 40 < 40 < 40 < 800 < 40 D 13100 < 40 178005/24/00 TB 11834 680 < 25 < 25 < 25 < 25 660 < 25 < 25 48 < 25 < 250 < 25 < 25 < 25 < 500 < 25 990 < 25 28008/06/00 TB 12352 380 < 10 < 10 < 10 < 10 190 < 10 < 10 11 < 10 < 100 < 10 < 10 < 10 1900 < 10 240 < 10 17610/10/00 TB 12764 250 < 20 < 20 < 20 < 20 40 < 20 < 20 < 20 < 20 < 200 < 20 < 20 < 20 < 400 < 20 83 < 20 2811/04/00 TB 13119 150 < 5 < 5 < 5 < 5 18 < 5 < 5 7 < 5 < 50 < 5 < 5 < 5 < 100 < 5 60 < 5 33

12/07/00 TB 13361 610 < 10 < 10 < 10 < 10 90 < 10 < 10 22 < 10 < 100 < 10 < 10 < 10 < 200 < 10 220 < 10 82

01/06/01 TB 13524 128 < 5 < 5 < 5 < 5 22 < 5 < 5 9 < 5 < 50 < 5 < 5 < 5 < 100 < 5 87 < 5 89

02/23/01 TB 13875 710 < 5 < 5 < 5 < 5 20 < 5 < 5 8 < 5 < 50 < 5 < 5 < 5 170 < 5 40 < 5 46

05/10/01 TB 14399 J 10 < 5 < 5 < 5 < 5 41 < 5 < 5 18 < 5 < 50 < 5 < 5 < 5 < 100 < 5 110 < 5 6908/06/01 TB 14881 39 < 5 < 5 < 5 < 5 9 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 14 < 5 1709/04/01 TB 15192 59 < 5 < 5 < 5 < 5 D 420 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 37 < 5 20

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 59 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

NW-013JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: Easement North

10/04/01 TB 15306 45 < 5 < 5 < 5 6 D 2700 < 5 < 5 < 5 < 5 J 5 < 5 < 5 < 5 < 100 < 5 210 < 5 3110/30/01 TB 15438 690 < 40 < 40 < 40 < 40 1300 < 40 < 40 < 40 < 40 < 400 < 40 < 40 < 40 < 800 < 40 110 < 40 < 4012/06/01 TB 15866 D 2900 < 10 < 10 < 10 < 10 260 < 10 < 10 J 3 < 10 < 100 < 10 < 10 < 10 J 150 < 10 31 < 10 J 16

01/03/02 TB 16097 62 < 5 < 5 < 5 < 5 130 < 5 < 5 J 3 < 5 < 50 < 5 < 5 < 5 < 100 < 5 27 < 5 1701/26/02 TB 16264 38 < 5 < 5 < 5 < 5 76 < 5 < 5 J 3 < 5 < 50 < 5 < 5 < 5 J 8 < 5 21 < 5 1502/28/02 TB 16589 29 < 5 < 5 < 5 < 5 36 < 5 < 5 J 3 < 5 < 50 < 5 < 5 < 5 < 100 < 5 15 < 5 J 1303/29/02 TB 16760 41 < 5 < 5 < 5 < 5 20 < 5 < 5 J 3 < 5 < 50 < 5 < 5 < 5 < 100 < 5 11 < 5 J 1205/01/02 TB 16897 30 < 5 < 5 < 5 < 5 13 < 5 < 5 J 3 < 5 < 50 < 5 < 5 < 5 < 100 < 5 9 < 5 J 1206/13/02 TB 17300 J 9 < 5 < 5 < 5 < 5 11 < 5 < 5 J 2 < 5 < 50 < 5 < 5 < 5 < 100 < 5 7 < 5 J 1107/11/02 TB 17412 23 < 5 < 5 < 5 < 5 10 < 5 < 5 J 2 < 5 < 50 < 5 < 5 < 5 < 100 < 5 7 < 5 J 10

08/10/02 TB 17670 21 < 5 < 5 < 5 < 5 11 < 5 < 5 J 3 < 5 < 50 < 5 < 5 < 5 < 100 < 5 7 < 5 J 10

09/10/02 TB 17893 30 < 5 < 5 < 5 < 5 11 < 5 < 5 J 4 < 5 < 50 < 5 < 5 < 5 < 100 < 5 9 < 5 J 8

09/19/02 TB 17955 J 5 < 5 < 5 < 5 < 5 8 < 5 < 5 J 3 < 5 < 50 < 5 < 5 < 5 < 100 < 5 7 < 5 J 6

10/01/02 TB 18012 62 < 5 < 5 < 5 < 5 8 < 5 < 5 J 2 < 5 < 50 < 5 < 5 < 5 < 100 < 5 7 < 5 J 5

11/01/02 TB 18117 J 8 < 5 < 5 < 5 < 5 7 < 5 < 5 J 2 < 5 < 50 < 5 < 5 < 5 < 100 < 5 J 4 < 5 J 311/11/02 TB 18188 52 < 5 < 5 < 5 < 5 8 < 5 < 5 J 2 < 5 < 50 < 5 < 5 < 5 < 100 < 5 5 < 5 J 511/19/02 TB 18204 12 < 5 < 5 < 5 < 5 8 < 5 < 5 J 2 < 5 < 50 < 5 < 5 < 5 < 100 < 5 5 < 5 J 612/05/02 TB 18334 J 9 < 5 < 5 < 5 < 5 8 < 5 < 5 J 2 < 5 < 50 < 5 < 5 < 5 < 100 < 5 5 < 5 J 5

01/02/03 TB 18397 11 < 5 < 5 < 5 < 5 7 < 5 < 5 J 2 < 5 < 50 < 5 < 5 < 5 < 100 < 5 J 4 < 5 J 402/11/03 TB 18662 12 < 5 < 5 < 5 < 5 J 4 < 5 < 5 J 2 < 5 < 50 < 5 < 5 < 5 < 100 < 5 J 3 < 5 J 404/15/03 TB 19113 12 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 J 305/06/03 TB 19147 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 506/13/03 TB 19385 24 < 5 < 5 < 5 < 15 10 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 507/08/03 TB 19465 34 < 5 < 5 < 5 < 15 9 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 5 < 2 J 508/06/03 TB 19531 46 < 5 < 5 < 5 < 15 14 < 5 < 5 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 6 < 2 J 709/17/03 TB 19826 33 < 5 < 5 < 5 < 15 16 < 5 < 5 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 7 < 2 J 710/14/03 TB 19909 29 < 5 < 5 < 5 < 15 16 < 5 < 5 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 10 < 2 J 811/06/03 TB 19936 42 < 5 < 5 < 5 < 15 20 < 5 < 5 6 < 5 < 20 < 4 < 5 < 5 < 50 < 5 9 < 2 1012/12/03 TB 20161 34 < 5 < 5 < 5 < 15 19 < 5 < 5 6 < 5 < 20 < 4 < 5 < 5 < 50 < 5 8 < 2 J 8

02/17/04 TB 20373 8 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 J 404/08/04 TB 20645 J 13 < 5 < 5 < 5 < 15 6 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

09/14/04 TB 21197 34 < 5 < 5 < 5 < 15 22 < 5 < 5 6 < 5 < 20 < 4 < 5 < 5 < 50 < 5 9 < 2 J 8

10/19/04 TB 21349 26 < 5 < 5 < 5 < 15 24 < 5 < 5 6 < 5 < 20 < 4 < 5 < 5 < 50 < 5 13 < 2 J 9

11/09/04 TB 21393 34 < 5 < 5 < 5 < 15 20 < 5 < 5 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 10 < 2 J 7

12/02/04 TB 21514 29 < 5 < 5 < 5 < 15 20 < 5 < 5 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 11 < 2 J 8

01/11/05 TB 21765 19 < 5 < 5 < 5 < 15 10 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 502/22/05 TB 22136 6 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 J 2

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 60 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

NW-013JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: Easement North

04/09/05 TB 22322 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 61 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

NW-014JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: Easement North

02/25/97 TB 01779 < 5 < 5 < 5 < 10 J 3 < 5 < 5 < 5 < 10 < 5 E 1500 < 5 J 2 < 10 J 203/17/97 TB 01888 < 5 < 5 < 5 < 10 < 5 < 5 < 5 < 5 < 10 < 5 E 1000 < 5 < 5 < 10 < 504/15/97 TB 02052 < 5 < 5 < 5 < 10 < 5 < 5 < 5 < 5 < 10 < 5 520 < 5 < 5 < 10 < 505/07/97 TB 02114 < 5 < 5 < 5 < 10 < 5 < 5 < 5 J 2 < 10 < 5 < 50 < 5 < 5 < 10 < 506/11/97 TB 02317 < 5 < 5 < 5 < 10 < 5 < 5 < 5 J 2 < 10 < 5 < 50 < 5 < 5 < 10 < 506/30/97 TB 02408 < 5 < 5 < 5 < 10 < 5 < 5 < 5 < 5 < 10 < 5 53 < 5 < 5 < 10 < 508/14/97 TB 02582 < 5 < 5 < 5 < 10 < 5 < 5 < 5 < 5 < 10 < 5 < 50 < 5 < 5 < 10 < 509/08/97 TB 02794 < 5 < 5 < 5 < 10 < 5 < 5 < 5 < 5 < 10 < 5 < 50 < 5 < 5 < 10 < 510/19/97 TB 03025 < 5 < 5 < 5 < 10 < 5 < 5 < 5 < 5 < 10 < 5 < 50 < 5 < 5 < 10 < 511/16/97 TB 03310 < 5 < 5 < 5 J 3 11 < 5 < 5 < 10 < 5 22 < 10 < 5 < 10 < 250 < 5 < 10 < 15 < 5

12/14/97 TB 03476 < 5 < 5 < 5 < 20 < 5 < 5 < 5 < 10 < 5 J 4 < 10 < 5 < 10 < 5 < 10 < 15 < 5

01/05/98 TB 03582 < 5 < 5 < 5 < 10 < 5 < 5 < 5 < 5 < 10 < 5 < 50 < 5 < 5 < 10 < 501/18/98 TB 03670 < 5 < 5 < 5 < 20 < 5 < 5 < 5 < 10 < 5 B 34 < 10 < 5 < 10 < 5 < 10 < 15 < 503/15/98 TB 03990 < 5 < 5 < 5 < 10 < 5 < 5 < 5 < 5 < 10 < 5 < 50 < 5 < 5 < 10 < 503/20/98 TB 04091 < 5 < 5 < 5 < 10 < 5 < 5 < 5 < 5 < 10 < 5 < 50 < 5 < 5 < 10 < 504/13/98 TB 04292 < 5 < 5 < 5 < 5 < 10 < 5 < 5 < 5 < 5 < 10 < 5 200 < 5 < 5 < 10 < 507/16/98 TB 05101 < 20 < 5 < 5 < 5 < 20 < 5 < 5 < 5 < 10 < 5 < 10 < 10 < 5 < 10 < 50 < 5 < 10 < 15 < 5

01/12/99 TB 07205 < 100 < 5 < 5 < 5 < 20 < 5 < 5 < 5 < 10 < 5 < 10 < 10 < 5 < 10 < 100 < 5 < 10 < 15 < 502/11/99 TB 07465 < 100 < 5 < 5 < 5 < 20 < 5 < 5 < 5 < 10 < 5 < 10 < 10 < 5 < 10 < 100 < 5 < 10 < 15 < 504/22/99 TB 08096 < 100 < 5 < 5 < 5 < 20 < 5 < 5 < 5 < 10 < 5 < 10 < 10 < 5 < 10 < 100 < 5 < 10 < 15 < 505/22/99 TB 08386 < 100 < 5 < 5 < 5 < 20 < 5 < 5 < 5 < 10 < 5 < 10 < 10 < 5 < 10 100 < 5 < 10 < 15 < 508/21/99 TB 09391 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 511/16/99 TB 10470 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 5

02/11/00 TB 11170 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 505/22/00 TB 11819 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 510/24/00 TB 12927 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 5

02/27/01 TB 13926 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 505/10/01 TB 14400 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 1100 < 5 < 5 < 5 < 508/30/01 TB 15172 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 511/08/01 TB 15570 26 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 5

02/28/02 TB 16590 J 3 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 505/10/02 TB 16986 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 509/10/02 TB 17894 12 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 5

02/18/03 TB 18726 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 508/06/03 TB 19532 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 62 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

NW-014JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: Easement North

09/15/04 TB 21220 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 510/19/04 TB 21350 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 511/09/04 TB 21394 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 512/02/04 TB 21515 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

01/11/05 TB 21766 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 502/22/05 TB 22137 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 505/19/05 TB 22606 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 63 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

NW-015JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: Easement North

02/25/97 TB 01777 < 5 < 5 < 5 < 10 < 5 < 5 < 5 J 2 < 10 < 5 < 50 < 5 < 5 < 10 < 503/17/97 TB 01889 < 5 < 5 < 5 < 10 < 5 < 5 < 5 < 5 < 10 < 5 E 990 < 5 < 5 < 10 < 504/15/97 TB 02051 < 5 < 5 < 5 < 10 < 5 < 5 < 5 < 5 < 10 < 5 620 < 5 < 5 < 10 < 505/07/97 TB 02113 < 5 < 5 < 5 < 10 < 5 < 5 < 5 < 5 < 10 < 5 < 50 < 5 < 5 < 10 < 506/11/97 TB 02318 < 5 < 5 < 5 < 10 < 5 < 5 < 5 < 5 < 10 < 5 < 50 < 5 < 5 < 10 < 508/14/97 TB 02583 < 5 < 5 < 5 < 10 < 5 < 5 < 5 J 3 < 10 < 5 60 < 5 < 5 < 10 < 509/08/97 TB 02795 < 5 < 5 < 5 < 10 < 5 < 5 < 5 J 4 < 10 < 5 < 50 < 5 < 5 < 10 < 510/19/97 TB 03026 < 5 < 5 < 5 < 10 < 5 < 5 < 5 < 5 < 10 < 5 < 50 < 5 < 5 < 10 < 511/16/97 TB 03309 < 5 < 5 < 5 < 20 < 5 < 5 < 5 < 10 < 5 < 10 < 10 < 5 < 10 < 250 < 5 < 10 < 15 < 5

01/18/98 TB 03677 < 5 < 5 < 5 J 6 < 5 < 5 < 5 < 10 < 5 B 47 < 10 < 5 < 10 < 5 < 10 < 15 < 5

03/15/98 TB 03988 < 5 < 5 < 5 < 10 J 3 < 5 < 5 < 5 < 10 < 5 < 50 < 5 < 5 < 10 < 503/20/98 TB 04092 < 5 < 5 < 5 < 10 < 5 < 5 < 5 < 5 < 10 < 5 < 50 < 5 < 5 < 10 < 504/13/98 TB 04293 J 4 < 5 < 5 < 5 < 10 < 5 < 5 < 5 < 5 < 10 < 5 < 50 < 5 < 5 < 10 < 507/16/98 TB 05102 < 20 < 5 < 5 < 5 < 20 < 5 < 5 < 5 < 10 < 5 < 10 < 10 < 5 < 10 < 50 < 5 < 10 < 15 < 5

01/12/99 TB 07206 < 100 < 5 < 5 < 5 < 20 < 5 < 5 < 5 < 10 < 5 < 10 < 10 < 5 < 10 < 100 < 5 < 10 < 15 < 502/11/99 TB 07466 < 100 < 5 < 5 < 5 < 20 < 5 < 5 < 5 < 10 < 5 < 10 < 10 < 5 < 10 < 100 < 5 < 10 < 15 < 504/22/99 TB 08097 < 100 < 5 < 5 < 5 < 20 < 5 < 5 < 5 < 10 < 5 < 10 < 10 < 5 < 10 < 100 < 5 < 10 < 15 < 505/22/99 TB 08387 < 100 < 5 < 5 < 5 < 20 < 5 < 5 < 5 < 10 < 5 < 10 < 10 < 5 < 10 < 100 < 5 < 10 < 15 < 508/21/99 TB 09392 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 511/16/99 TB 10471 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 5

02/11/00 TB 11171 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 505/25/00 TB 11837 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 510/24/00 TB 12928 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 5

02/26/01 TB 13913 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 110 < 5 < 5 < 5 < 505/10/01 TB 14401 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 508/30/01 TB 15173 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 511/08/01 TB 15571 J 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 5

02/28/02 TB 16591 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 505/10/02 TB 16987 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 509/10/02 TB 17895 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 5

02/18/03 TB 18727 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 508/06/03 TB 19533 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

09/15/04 TB 21221 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

02/22/05 TB 22138 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 505/19/05 TB 22607 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 64 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

NW-015JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: Easement North

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 65 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

NW-016JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: Easement North

04/10/99 TB 07996 740 < 5 < 5 < 5 55 D 36000 < 5 < 5 160 < 5 < 10 < 10 < 5 < 10 < 100 < 5 D 10000 < 15 D 47006/08/99 TB 08606 J 800 < 250 < 250 < 250 < 1000 29000 < 250 < 250 J 160 < 250 < 500 < 500 < 250 < 500 < 5000 < 250 9100 < 750 J 55007/07/99 TB 08905 < 20000 < 1000 < 1000 < 1000 < 4000 24000 < 1000 < 1000 < 2000 < 1000 < 2000 < 2000 < 1000 < 2000 < 20000 < 1000 6200 < 3000 < 100008/21/99 TB 09393 D 8700 < 5 < 5 < 5 120 D 111000 < 5 < 5 D 930 < 5 < 50 < 5 < 5 < 5 < 100 < 5 D 30000 < 5 D 222009/09/99 TB 09624 < 4000 < 2000 < 2000 < 2000 < 2000 61000 < 2000 < 2000 < 2000 < 2000 < 20000 < 2000 < 2000 < 2000 < 40000 < 2000 24000 < 2000 < 200010/08/99 TB 10030 3600 < 1250 < 1250 < 1250 < 1250 40000 < 1250 < 1250 J 490 < 1250 < 12500 < 1250 < 1250 < 1250 < 25000 < 1250 19000 < 1250 J 68011/12/99 TB 10447 6500 < 500 < 500 < 500 < 500 D 38000 < 500 < 500 510 < 500 < 5000 < 500 < 500 < 500 < 10000 < 500 18000 < 500 140012/13/99 TB 10725 19200 < 500 < 500 < 500 < 500 22400 < 500 < 500 770 < 500 < 5000 < 500 < 500 < 500 < 10000 < 500 16400 < 500 2170

01/06/00 TB 10887 11000 < 200 < 200 < 200 < 200 8100 < 200 < 200 400 < 200 < 2000 < 200 < 200 < 200 < 4000 < 200 6700 < 200 120002/10/00 TB 11164 11300 < 200 < 200 < 200 < 200 6200 < 200 < 200 420 < 200 < 2000 < 200 < 200 < 200 < 4000 < 200 5970 < 200 1140

03/05/00 TB 11322 13400 < 200 < 200 < 200 < 200 5840 < 200 < 200 200 < 200 < 2000 < 200 < 200 < 200 < 4000 < 200 3720 < 200 720

04/08/00 TB 11530 8100 < 200 < 200 < 200 < 200 3300 < 200 < 200 J 180 < 200 < 2000 < 200 < 200 < 200 < 4000 < 200 4000 < 200 J 520

05/20/00 TB 11806 6600 < 20 < 20 < 20 < 20 260 < 20 < 20 29 < 20 < 200 < 20 < 20 < 20 < 400 < 20 640 < 20 144

06/08/00 TB 11939 D 3600 < 5 < 5 < 5 < 5 D 350 < 5 < 5 J 4 < 5 < 50 < 5 < 5 < 5 < 100 < 5 D 320 < 5 44

07/06/00 TB 12101 2300 < 20 < 20 < 20 < 20 D 1000 < 20 < 20 < 20 < 20 < 200 < 20 < 20 < 20 < 400 < 20 520 < 20 16810/17/00 TB 12824 2100 < 10 < 10 < 10 < 10 D 450 < 10 < 10 55 < 10 < 100 < 10 < 10 < 10 < 200 < 10 D 550 < 10 362

01/06/01 TB 13525 D 3900 < 10 < 10 < 10 < 10 D 530 < 10 < 10 19 < 10 < 100 < 10 < 10 < 10 < 200 < 10 D 430 < 10 29002/23/01 TB 13876 1000 < 10 < 10 < 10 < 10 D 1100 < 10 < 10 16 < 10 < 100 < 10 < 10 < 10 < 200 < 10 270 < 10 32403/14/01 TB 14008 1900 < 10 < 10 < 10 11 D 560 < 10 < 10 21 < 10 < 100 < 10 < 10 < 10 410 < 10 430 < 10 25204/06/01 TB 14149 880 < 10 < 10 < 10 < 10 400 < 10 < 10 16 < 10 < 100 < 10 < 10 < 10 < 200 < 10 340 < 10 23405/10/01 TB 14402 170 < 10 < 10 < 10 < 10 390 < 10 < 10 13 < 10 < 100 < 10 < 10 < 10 < 200 < 10 260 < 10 25406/04/01 TB 14591 D 1700 < 10 < 10 < 10 < 10 390 < 10 < 10 17 < 10 < 100 < 10 < 10 < 10 390 < 10 440 < 10 33807/02/01 TB 14681 D 1200 < 10 < 10 < 10 < 10 330 < 10 < 10 26 < 10 < 100 < 10 < 10 < 10 < 200 < 10 D 380 < 10 34208/25/01 TB 15119 D 2300 < 10 < 10 < 10 < 10 330 < 10 < 10 22 < 10 < 100 < 10 < 10 < 10 < 200 < 10 130 < 10 12211/06/01 TB 15539 3400 < 125 < 125 < 125 < 125 5400 < 125 < 125 < 125 < 125 < 1250 < 125 < 125 < 125 < 2500 < 125 660 < 125 < 125

02/28/02 TB 16592 620 < 25 < 25 < 25 < 25 800 < 25 < 25 J 24 < 25 < 250 < 25 < 25 < 25 J 240 < 25 110 < 25 J 7004/01/02 TB 16766 690 < 20 < 20 < 20 < 20 550 < 20 < 20 35 < 20 < 200 < 20 < 20 < 20 < 400 < 20 140 < 20 6805/10/02 TB 16988 D 1100 < 13 < 13 < 13 < 13 380 < 13 < 13 37 < 13 < 125 < 13 < 13 < 13 J 180 < 13 120 < 13 6809/10/02 TB 17896 D 830 < 5 < 5 < 5 < 5 230 < 5 < 5 63 < 5 < 50 < 5 < 5 < 5 150 < 5 170 < 5 79

02/11/03 TB 18663 D 920 < 5 < 5 < 5 < 5 76 < 5 < 5 47 < 5 < 50 < 5 < 5 < 5 120 < 5 120 < 5 64

04/15/03 TB 19114 430 < 5 < 5 < 5 < 15 34 < 5 < 5 19 < 5 < 20 < 4 < 5 < 5 65 < 5 36 < 2 37

05/06/03 TB 19148 420 < 5 < 5 < 5 < 15 23 < 5 < 5 24 < 5 < 20 < 4 < 5 < 5 < 50 < 5 48 < 2 50

06/13/03 TB 19386 390 < 10 < 10 < 10 < 30 28 < 10 < 10 20 < 10 < 40 < 8 < 10 < 10 < 100 < 10 38 < 4 32

07/08/03 TB 19466 1010 < 5 < 5 < 5 < 15 37 < 5 < 5 38 < 5 < 20 < 4 < 5 < 5 < 50 < 5 49 < 2 54

08/06/03 TB 19534 1160 < 5 < 5 < 5 < 15 48 < 5 < 5 53 < 5 < 20 < 4 < 5 < 5 125 < 5 69 < 2 5709/17/03 TB 19827 1040 < 25 < 25 < 25 < 75 50 < 25 < 25 45 < 25 < 100 < 20 < 25 < 25 < 250 < 25 70 < 10 5010/14/03 TB 19910 885 < 25 < 25 < 25 < 75 60 < 25 < 25 75 < 25 < 100 < 20 < 25 < 25 < 250 < 25 115 < 10 70

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 66 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

NW-016JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: Easement North

11/06/03 TB 19937 1320 < 25 < 25 < 25 < 75 65 < 25 < 25 75 < 25 < 100 < 20 < 25 < 25 < 250 < 25 95 < 10 7012/12/03 TB 20162 1030 < 25 < 25 < 25 < 75 60 < 25 < 25 80 < 25 < 100 < 20 < 25 < 25 < 250 < 25 90 < 10 65

02/17/04 TB 20374 377 < 10 < 10 < 10 < 30 22 < 10 < 10 21 < 10 < 40 < 8 < 10 < 10 < 100 < 10 36 < 4 4509/14/04 TB 21198 1270 < 25 < 25 < 25 < 75 62 < 25 < 25 49 < 25 < 100 < 20 < 25 < 25 273 < 25 56 < 10 7810/19/04 TB 21351 1090 < 25 < 25 < 25 < 75 57 < 25 < 25 41 < 25 < 100 < 20 < 25 < 25 < 250 < 25 53 < 10 5611/09/04 TB 21395 2390 < 25 < 25 < 25 < 75 69 < 25 < 25 43 < 25 < 100 < 20 < 25 < 25 870 < 25 58 < 10 6612/02/04 TB 21516 1930 < 50 < 50 < 50 < 150 87 < 50 < 50 53 < 50 < 200 < 40 < 50 < 50 1320 < 50 71 < 20 J 38

01/11/05 TB 21767 2160 < 50 < 50 < 50 < 150 94 < 50 < 50 50 < 50 < 200 < 40 < 50 < 50 < 500 < 50 < 50 < 20 J 3602/22/05 TB 22139 1190 < 25 < 25 < 25 < 75 90 < 25 < 25 25 < 25 < 100 < 20 < 25 < 25 < 250 < 25 55 < 10 59

05/19/05 TB 22608 1740 < 25 < 25 < 25 < 75 52 < 25 < 25 < 25 < 25 < 100 < 20 < 25 < 25 790 < 25 36 < 10 J 19

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 67 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

NW-017JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: Easement North

04/10/99 TB 07997 210 < 5 < 5 < 5 < 20 D 400 < 5 < 5 12 < 5 < 10 < 10 < 5 < 10 230 < 5 220 < 15 7705/22/99 TB 08388 3100 < 10 < 10 < 10 72 D 13000 < 10 < 10 260 < 10 < 20 < 20 < 10 < 20 < 200 < 10 D 5800 < 30 65006/05/99 TB 08566 J 1700 < 250 < 250 < 250 < 1000 D 35000 < 250 < 250 J 260 < 250 < 500 < 500 < 250 < 500 < 5000 < 250 D 15000 < 750 83007/07/99 TB 08906 J 760 < 125 < 125 < 125 < 500 4900 < 125 < 125 J 72 < 125 < 250 < 250 < 125 < 250 < 2500 < 125 3000 < 375 J 26008/21/99 TB 09394 67500 < 250 < 250 < 250 < 250 D 51000 < 250 < 250 2200 < 250 < 2500 < 250 < 250 < 250 < 5000 < 250 D 34000 < 250 530009/09/99 TB 09625 5900 < 500 < 500 < 500 < 500 13000 < 500 < 500 590 < 500 < 5000 < 500 < 500 < 500 < 10000 < 500 11000 < 500 200010/08/99 TB 10031 3900 < 500 < 500 < 500 < 500 14100 < 500 < 500 J 350 < 500 < 5000 < 500 < 500 < 500 < 10000 < 500 8100 < 500 J 100011/12/99 TB 10448 8900 < 500 < 500 < 500 < 500 10000 < 500 < 500 J 310 < 500 < 5000 < 500 < 500 < 500 < 10000 < 500 6500 < 500 J 80012/13/99 TB 10726 11700 < 200 < 200 < 200 < 200 D 8770 < 200 < 200 380 < 200 < 2000 < 200 < 200 < 200 < 4000 < 200 7600 < 200 1160

01/06/00 TB 10888 9200 < 125 < 125 < 125 < 125 4600 < 125 < 125 300 < 125 < 1250 < 125 < 125 < 125 < 2500 < 125 4300 < 125 875

02/10/00 TB 11165 9250 < 125 < 125 < 125 < 125 1680 < 125 < 125 280 < 125 < 1250 < 125 < 125 < 125 < 2500 < 125 2620 < 125 770

03/05/00 TB 11323 13000 < 125 < 125 < 125 < 125 3300 < 125 < 125 280 < 125 < 1250 < 125 < 125 < 125 < 2500 < 125 3650 < 125 780

04/08/00 TB 11531 6900 < 125 < 125 < 125 < 125 890 < 125 < 125 160 < 125 < 1250 < 125 < 125 < 125 < 2500 < 125 1400 < 125 475

05/20/00 TB 11807 9000 < 25 < 25 < 25 < 25 440 < 25 < 25 120 < 25 < 250 < 25 < 25 < 25 < 500 < 25 660 < 25 335

06/06/00 TB 11904 3800 < 10 < 10 < 10 < 10 340 < 10 < 10 78 < 10 < 100 < 10 < 10 < 10 < 200 < 10 520 < 10 25007/06/00 TB 12102 6100 < 25 < 25 < 25 < 25 810 < 25 < 25 100 < 25 < 250 < 25 < 25 < 25 < 500 < 25 1100 < 25 30010/17/00 TB 12825 3800 < 20 < 20 < 20 < 20 350 < 20 < 20 52 < 20 < 200 < 20 < 20 < 20 < 400 < 20 520 < 20 312

02/23/01 TB 13877 1300 < 25 < 25 < 25 < 25 62 < 25 < 25 < 25 < 25 < 250 < 25 < 25 < 25 < 500 < 25 50 < 25 12003/14/01 TB 14009 1800 < 5 < 5 < 5 < 5 57 < 5 < 5 25 < 5 < 50 < 5 < 5 < 5 < 100 < 5 150 < 5 17305/10/01 TB 14403 120 < 5 < 5 < 5 < 5 41 < 5 < 5 23 < 5 < 50 < 5 < 5 < 5 < 100 < 5 130 < 5 15408/06/01 TB 14882 D 1200 < 5 < 5 < 5 7 D 560 < 5 < 5 32 < 5 < 50 < 5 < 5 < 5 540 < 5 D 270 < 5 29609/04/01 TB 15193 D 460 < 5 < 5 < 5 < 5 89 < 5 < 5 9 < 5 < 50 < 5 < 5 < 5 < 100 < 5 20 < 5 3310/04/01 TB 15307 500 < 20 < 20 < 20 < 20 520 < 20 < 20 < 20 < 20 < 200 < 20 < 20 < 20 < 400 < 20 56 < 20 6010/30/01 TB 15439 270 < 20 < 20 < 20 < 20 390 < 20 < 20 < 20 < 20 < 200 < 20 < 20 < 20 < 400 < 20 48 < 20 5612/06/01 TB 15867 250 < 10 < 10 < 10 < 10 290 < 10 < 10 J 6 < 10 < 100 < 10 < 10 < 10 < 200 < 10 44 < 10 50

01/03/02 TB 16098 470 < 20 < 20 < 20 < 20 210 < 20 < 20 < 20 < 20 < 200 < 20 < 20 < 20 < 400 < 20 43 < 20 5601/26/02 TB 16265 510 < 5 < 5 < 5 < 5 190 < 5 < 5 7 < 5 < 50 < 5 < 5 < 5 J 33 < 5 42 < 5 6503/29/02 TB 16761 D 300 < 5 < 5 < 5 < 5 31 < 5 < 5 8 < 5 < 50 < 5 < 5 < 5 200 < 5 17 < 5 2405/01/02 TB 16898 D 260 < 5 < 5 < 5 < 5 20 < 5 < 5 7 < 5 < 50 < 5 < 5 < 5 J 90 < 5 13 < 5 1806/13/02 TB 17301 170 < 5 < 5 < 5 < 5 12 < 5 < 5 J 5 < 5 < 50 < 5 < 5 < 5 280 < 5 12 < 5 J 1307/11/02 TB 17413 D 440 < 5 < 5 < 5 < 5 11 < 5 < 5 5 < 5 < 50 < 5 < 5 < 5 210 < 5 13 < 5 J 12

08/10/02 TB 17671 D 100 < 5 < 5 < 5 < 5 13 < 5 < 5 5 < 5 < 50 < 5 < 5 < 5 130 < 5 11 < 5 J 10

09/19/02 TB 17956 69 < 5 < 5 < 5 < 5 15 < 5 < 5 7 < 5 < 50 < 5 < 5 < 5 < 100 < 5 16 < 5 J 13

10/01/02 TB 18013 D 530 < 5 < 5 < 5 < 5 15 < 5 < 5 11 < 5 < 50 < 5 < 5 < 5 120 < 5 12 < 5 J 10

11/01/02 TB 18118 D 240 < 5 < 5 < 5 < 5 12 < 5 < 5 5 < 5 < 50 < 5 < 5 < 5 120 < 5 15 < 5 J 13

11/19/02 TB 18205 D 430 < 5 < 5 < 5 < 5 15 < 5 < 5 6 < 5 < 50 < 5 < 5 < 5 180 < 5 17 < 5 J 1412/05/02 TB 18335 140 < 5 < 5 < 5 < 5 13 < 5 < 5 6 < 5 < 50 < 5 < 5 < 5 < 100 < 5 16 < 5 J 12

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 68 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

NW-017JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: Easement North

01/02/03 TB 18398 150 < 5 < 5 < 5 < 5 12 < 5 < 5 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 15 < 5 J 1002/11/03 TB 18664 170 < 5 < 5 < 5 < 5 6 < 5 < 5 J 4 < 5 < 50 < 5 < 5 < 5 140 < 5 8 < 5 J 704/15/03 TB 19115 78 < 5 < 5 < 5 < 15 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 72 < 5 < 5 < 2 J 305/06/03 TB 19149 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 506/13/03 TB 19387 214 < 5 < 5 < 5 < 15 9 < 5 < 5 < 5 < 5 J 25 < 4 < 5 < 5 177 < 5 < 5 < 2 707/08/03 TB 19467 200 < 5 < 5 < 5 < 15 7 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 90 < 5 9 < 2 J 608/06/03 TB 19535 268 < 5 < 5 < 5 < 15 12 < 5 < 5 5 < 5 < 20 < 4 < 5 < 5 209 < 5 15 < 2 1309/17/03 TB 19828 292 < 5 < 5 < 5 < 15 15 < 5 < 5 5 < 5 < 20 < 4 < 5 < 5 252 < 5 18 < 2 1510/14/03 TB 19911 181 < 5 < 5 < 5 < 15 14 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 196 < 5 19 < 2 1511/06/03 TB 19938 222 < 5 < 5 < 5 < 15 19 < 5 < 5 6 < 5 < 20 < 4 < 5 < 5 317 < 5 19 < 2 20

12/12/03 TB 20163 238 < 5 < 5 < 5 < 15 21 < 5 < 5 5 < 5 < 20 < 4 < 5 < 5 368 < 5 20 < 2 23

02/17/04 TB 20375 53 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 339 < 5 5 < 2 13

09/14/04 TB 21199 477 < 10 < 10 < 10 < 30 65 < 10 < 10 < 10 < 10 < 40 < 8 < 10 < 10 263 < 10 28 < 4 78

02/22/05 TB 22140 197 < 10 < 10 < 10 < 30 44 < 10 < 10 < 10 < 10 < 40 < 8 < 10 < 10 181 < 10 16 < 4 5405/19/05 TB 22609 284 < 10 < 10 < 10 < 30 65 < 10 < 10 < 10 < 10 < 40 < 8 < 10 < 10 312 < 10 41 < 4 60

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 69 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

NW-018JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: Easement North

04/10/99 TB 07994 D 2800 < 5 < 5 < 5 45 D 10000 < 5 < 5 D 290 < 5 < 10 < 10 < 5 < 10 324 < 5 D 5400 < 15 D 114005/22/99 TB 08389 670 < 25 < 25 < 25 < 100 680 < 25 < 25 J 15 < 25 < 50 < 50 < 25 < 50 < 500 < 25 560 < 75 30006/05/99 TB 08567 2900 < 25 < 25 < 25 < 100 D 7900 < 25 < 25 150 < 25 < 50 < 50 < 25 < 50 < 500 < 25 D 4000 < 75 110007/07/99 TB 08907 < 4000 < 200 < 200 < 200 < 800 6200 < 200 < 200 < 400 < 200 < 400 < 400 < 200 < 400 < 4000 < 200 2600 < 600 J 29008/21/99 TB 09395 11000 < 25 < 25 < 25 65 D 7500 < 25 < 25 455 < 25 < 250 < 25 < 25 < 25 1680 < 25 D 7100 < 25 180009/09/99 TB 09626 1500 < 100 < 100 < 100 < 100 1800 < 100 < 100 < 100 < 100 < 1000 < 100 < 100 < 100 < 2000 < 100 940 < 100 J 25010/08/99 TB 10032 2400 < 500 < 500 < 500 < 500 13100 < 500 < 500 < 500 < 500 < 5000 < 500 < 500 < 500 < 10000 < 500 6500 < 500 < 50011/12/99 TB 10449 640 < 5 < 5 < 5 < 5 44 < 5 < 5 9 < 5 < 50 < 5 < 5 < 5 1000 < 5 48 < 5 5112/13/99 TB 10727 1190 < 5 < 5 < 5 < 5 140 < 5 < 5 12 < 5 < 50 < 5 < 5 < 5 460 < 5 110 < 5 60

01/06/00 TB 10889 1400 < 5 < 5 < 5 < 5 D 230 < 5 < 5 13 < 5 < 50 < 5 < 5 < 5 110 < 5 140 < 5 53

02/10/00 TB 11166 670 < 5 < 5 < 5 < 5 D 1060 < 5 < 5 9 < 5 < 50 < 5 < 5 < 5 < 100 < 5 260 < 5 35

03/05/00 TB 11324 740 < 50 < 50 < 50 < 50 D 2600 < 50 < 50 < 50 < 50 < 500 < 50 < 50 < 50 < 1000 < 50 790 < 50 < 5004/27/00 TB 11532 720 < 5 < 5 < 5 < 5 170 < 5 < 5 5 < 5 < 50 < 5 < 5 < 5 490 < 5 69 < 5 21

05/20/00 TB 11808 1500 < 5 < 5 < 5 < 5 14 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 11 < 5 J 3

06/06/00 TB 11905 240 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 507/06/00 TB 12103 550 < 5 < 5 < 5 < 5 J 4 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 J 4 < 5 < 510/17/00 TB 12826 27 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 5

02/23/01 TB 13878 < 10 < 5 < 5 < 5 < 5 6 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 505/10/01 TB 14404 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 508/25/01 TB 15120 D 2300 < 5 < 5 < 5 < 5 7 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 J 5 < 5 < 511/06/01 TB 15540 D 1700 < 5 < 5 J 4 10 180 < 5 < 5 < 5 < 5 J 10 < 5 < 5 < 5 < 100 < 5 12 < 5 J 2

02/28/02 TB 16593 150 < 5 < 5 < 5 < 5 17 < 5 < 5 < 5 < 5 J 3 < 5 < 5 < 5 J 87 < 5 < 5 < 5 < 505/10/02 TB 16989 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 509/10/02 TB 17897 180 < 5 < 5 J 4 < 5 33 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 290 < 5 J 2 < 5 < 5

02/11/03 TB 18665 20 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 504/15/03 TB 19116 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 505/06/03 TB 19150 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 506/13/03 TB 19388 7 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 507/08/03 TB 19468 45 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 508/06/03 TB 19536 89 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 J 3

09/17/03 TB 19829 263 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 19

10/14/03 TB 19912 336 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 7 < 2 37

11/06/03 TB 19939 430 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 72 < 5 5 < 2 48

12/12/03 TB 20164 486 < 10 < 10 < 10 < 30 < 10 < 10 < 10 < 10 < 10 < 40 < 8 < 10 < 10 < 100 < 10 < 10 < 4 36

02/17/04 TB 20376 27 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 55 < 5 < 5 < 2 1509/14/04 TB 21200 746 < 20 < 20 < 20 < 60 < 20 < 20 < 20 < 20 < 20 < 80 < 16 < 20 < 20 < 200 < 20 < 20 < 8 J 18

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 70 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

NW-018JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: Easement North

02/22/05 TB 22157 105 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 136 < 5 < 5 < 2 1405/19/05 TB 22610 21 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 124 < 5 < 5 < 2 J 3

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 71 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

NW-019JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: Easement North

04/10/99 TB 07995 < 100 < 5 < 5 < 5 < 20 30 < 5 J 1 < 10 < 5 < 10 < 10 < 5 < 10 150 < 5 J 9 < 15 < 505/22/99 TB 08390 < 100 < 5 < 5 < 5 < 20 13 < 5 < 5 < 10 < 5 < 10 < 10 < 5 < 10 < 100 < 5 J 7 < 15 < 506/05/99 TB 08568 J 24 < 5 < 5 < 5 < 20 29 < 5 < 5 J 3 < 5 < 10 < 10 < 5 < 10 < 100 < 5 31 < 15 1308/21/99 TB 09396 D 3061 < 5 < 5 < 5 < 5 D 1000 < 5 < 5 19 < 5 < 50 < 5 < 5 < 5 343 < 5 D 1270 < 5 30009/09/99 TB 09627 1900 < 5 < 5 < 5 < 5 74 < 5 < 5 J 3 < 5 < 50 < 5 < 5 < 5 220 < 5 73 < 5 5210/08/99 TB 10033 350 < 5 < 5 < 5 8 49 < 5 < 5 12 < 5 < 50 < 5 < 5 < 5 190 < 5 100 < 5 14011/12/99 TB 10450 650 < 5 < 5 < 5 < 5 64 < 5 < 5 10 < 5 < 50 < 5 < 5 < 5 150 < 5 60 < 5 10012/13/99 TB 10728 810 < 5 < 5 < 5 < 5 27 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 170 < 5 8 < 5 < 10

02/10/00 TB 11167 320 < 5 < 5 < 5 < 5 37 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 12 < 5 < 1005/20/00 TB 11809 1600 < 5 < 5 < 5 < 5 9 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 8 < 5 J 3

06/06/00 TB 11906 D 9700 < 5 < 5 < 5 < 5 D 500 < 5 < 5 22 < 5 < 50 < 5 < 5 < 5 < 100 < 5 D 240 < 5 65

07/06/00 TB 12104 D 4800 < 5 < 5 < 5 < 5 140 < 5 < 5 7 < 5 < 50 < 5 < 5 < 5 < 100 < 5 130 < 5 17

10/17/00 TB 12827 640 < 5 < 5 < 5 < 5 12 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 8 < 5 J 1

02/23/01 TB 13879 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 505/10/01 TB 14405 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 J 308/25/01 TB 15121 D 2300 < 5 < 5 < 5 < 5 D 280 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 35 < 5 < 511/06/01 TB 15541 D 2000 < 5 < 5 < 5 30 D 2400 < 5 < 5 10 < 5 J 25 < 5 < 5 < 5 580 < 5 D 270 < 5 2212/18/01 TB 15991 260 < 10 < 10 < 10 < 10 D 1900 < 10 < 10 < 10 < 10 < 100 < 10 < 10 < 10 1800 < 10 83 < 10 < 10

01/03/02 TB 16099 3100 < 10 < 10 < 10 24 D 5100 < 10 < 10 12 < 10 < 100 < 10 < 10 < 10 2200 < 10 560 < 10 J 2201/26/02 TB 16266 D 1400 < 10 < 10 < 10 < 10 D 2100 < 10 < 10 J 7 < 10 < 100 < 10 < 10 < 10 2300 < 10 260 < 10 J 1003/29/02 TB 16762 130 < 5 < 5 5 < 5 210 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 1400 < 5 J 3 < 5 < 505/01/02 TB 16899 40 < 5 < 5 6 < 5 24 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 1400 < 5 < 5 < 5 J 106/13/02 TB 17302 < 10 < 5 < 5 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 110 < 5 < 5 < 5 < 507/11/02 TB 17414 < 10 < 5 < 5 J 4 < 5 J 2 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 J 84 < 5 < 5 < 5 < 508/10/02 TB 17672 94 < 5 < 5 J 4 < 5 14 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 110 < 5 < 5 < 5 < 509/19/02 TB 17957 D 1900 < 5 < 5 < 5 < 5 30 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 160 < 5 J 2 < 5 J 110/01/02 TB 18014 240 < 5 < 5 J 2 < 5 26 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 220 < 5 J 2 < 5 < 511/01/02 TB 18119 140 < 10 < 10 < 10 < 10 24 < 10 < 10 < 10 < 10 < 100 < 10 < 10 < 10 250 < 10 < 10 < 10 < 1011/19/02 TB 18206 D 400 < 5 < 5 < 5 < 5 28 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 270 < 5 J 3 < 5 < 512/05/02 TB 18336 210 < 5 < 5 < 5 < 5 28 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 J 2 < 5 < 5

01/02/03 TB 18399 210 < 5 < 5 < 5 < 5 22 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 390 < 5 J 2 < 5 < 502/11/03 TB 18666 J 5 < 5 < 5 < 5 < 5 J 1 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 140 < 5 < 5 < 5 < 504/15/03 TB 19117 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 505/06/03 TB 19151 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 506/13/03 TB 19389 14 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 507/08/03 TB 19469 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 508/06/03 TB 19537 94 < 5 < 5 < 5 < 15 7 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 101 < 5 < 5 < 2 < 5

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 72 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

NW-019JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: Easement North

09/17/03 TB 19830 118 < 5 < 5 < 5 < 15 9 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 134 < 5 < 5 < 2 < 510/14/03 TB 19913 153 < 5 < 5 < 5 < 15 12 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 99 < 5 < 5 < 2 < 511/06/03 TB 19940 144 < 5 < 5 < 5 < 15 13 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 106 < 5 < 5 < 2 < 512/12/03 TB 20165 160 < 5 < 5 < 5 < 15 11 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 94 < 5 < 5 < 2 < 5

02/17/04 TB 20377 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 509/14/04 TB 21201 51 < 5 < 5 < 5 < 15 6 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 125 < 5 < 5 < 2 < 5

02/22/05 TB 22158 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 505/19/05 TB 22611 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 73 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

MW-066JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: Easement South

01/19/97 TB 01025 < 5 < 5 < 5 < 10 3 < 5 < 5 < 5 < 10 < 5 1400 < 5 < 5 < 10 < 502/16/97 TB 01701 < 5 < 5 < 5 < 10 < 5 < 5 < 5 J 3 < 10 < 5 < 50 < 5 < 5 < 10 < 503/16/97 TB 01881 < 5 < 5 < 5 < 10 J 3 < 5 < 5 10 < 10 < 5 < 50 < 5 < 5 < 10 J 104/10/97 TB 02024 < 5 < 5 < 5 < 10 < 5 < 5 < 5 < 5 < 10 < 5 < 50 < 5 < 5 < 10 < 512/14/97 TB 03473 < 5 < 5 < 5 < 20 < 5 < 5 < 5 < 10 < 5 J 3 < 10 < 5 < 10 < 5 < 10 < 15 < 5

03/15/98 TB 03991 < 5 < 5 < 5 < 10 < 5 < 5 < 5 < 5 < 10 < 5 < 50 < 5 < 5 < 10 < 507/13/98 TB 05033 < 50 < 25 < 25 < 25 < 100 < 25 < 25 < 25 < 50 < 25 < 50 < 50 < 25 < 50 < 250 < 25 < 50 < 75 < 25

01/12/99 TB 07202 < 100 < 5 < 5 < 5 49 < 5 < 5 < 5 < 10 < 5 < 10 < 10 < 5 < 10 230 < 5 < 10 < 15 < 502/12/99 TB 07470 < 100 < 5 < 5 < 5 34 < 5 < 5 < 5 < 10 < 5 < 10 < 10 < 5 < 10 260 < 5 < 10 < 15 < 5

08/21/99 TB 09399 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 5

10/24/00 TB 12933 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 5

02/27/01 TB 13922 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 506/03/01 TB 14584 360 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 508/27/01 TB 15153 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 5

02/25/02 TB 16545 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 505/12/02 TB 16997 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 509/13/02 TB 17915 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 5

02/04/03 TB 18588 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 508/07/03 TB 19560 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

02/12/04 TB 20311 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 509/07/04 TB 21100 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 510/19/04 TB 21339 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 511/09/04 TB 21384 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 512/03/04 TB 21519 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

01/12/05 TB 21774 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 502/22/05 TB 22146 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 505/17/05 TB 22562 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 74 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

MW-067JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: Easement South

02/05/96 TB 01815 < 5000 < 2500 17000 44000 < 2500 13000 < 25000 < 2500 < 5000 < 2500

01/19/97 TB 01014 < 500 < 500 < 500 < 1000 9700 < 500 < 500 < 500 < 1000 < 500 71000 < 500 < 500 < 1000 < 50003/16/97 TB 01880 < 1200 < 1200 < 1200 < 2500 23000 < 1200 < 1200 < 1200 < 2500 < 1200 E 230000 < 1200 < 1200 < 2500 < 120004/10/97 TB 02025 < 1200 < 1200 < 1200 < 2500 40000 < 1200 < 1200 < 1200 < 2500 < 1200 83000 < 1200 < 1200 < 2500 < 120006/30/97 TB 02404 < 2500 < 2500 < 2500 < 5000 72000 < 2500 < 2500 < 2500 < 5000 < 2500 E 410000 < 2500 J 1600 < 5000 < 2500

01/18/98 TB 03665 < 500 < 500 < 500 < 2000 20000 < 500 < 500 < 1000 < 500 < 1000 < 1000 < 500 < 1000 < 500 < 1000 < 1500 < 50004/13/98 TB 04284 < 500 < 500 < 500 < 500 < 1000 7600 < 500 < 500 < 500 < 1000 < 500 24000 < 500 < 500 < 1000 < 50007/13/98 TB 05034 < 50 < 25 < 25 41 880 230 < 25 < 25 < 50 < 25 J 48 < 50 < 25 < 50 E 120000 < 25 < 50 < 75 < 2510/16/98 TB 06159 < 100 < 5 < 5 J 4 710 15 < 5 < 5 < 10 < 5 350 < 10 < 5 < 10 10000 < 5 < 10 < 15 < 5

01/12/99 TB 07200 < 100 30 < 5 < 5 < 20 D 5800 J 2 < 5 96 < 5 < 10 J 4 < 5 J 10 D 71000 < 5 38 J 8 48

02/12/99 TB 07471 480 18 < 5 < 5 57 D 4500 < 5 < 5 66 < 5 < 10 < 10 < 5 J 6 D 75000 < 5 27 J 5 29

05/23/99 TB 08393 < 200 < 10 < 10 < 10 < 40 370 < 10 < 10 < 20 < 10 < 20 < 20 < 10 < 20 5000 < 10 < 20 < 30 < 1008/21/99 TB 09398 < 20 < 10 < 10 < 10 < 10 420 < 10 < 10 < 10 < 10 < 100 < 10 < 10 < 10 3500 < 10 < 10 < 10 < 1011/08/99 TB 10399 152 20 < 10 48 34 240 < 10 46 < 10 < 10 < 100 < 10 < 10 < 10 23000 < 10 60 56 J 12

02/10/00 TB 11168 510 J 5 < 5 < 5 < 5 D 2100 < 5 < 5 24 < 5 < 50 < 5 < 5 < 5 D 14200 < 5 15 < 5 1910/18/00 TB 12846 45 < 5 < 5 < 5 < 5 180 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 1400 < 5 < 5 < 5 < 5

02/26/01 TB 13914 62 < 10 < 10 < 10 12 220 < 10 < 10 < 10 < 10 < 100 < 10 < 10 < 10 3600 < 10 < 10 < 10 < 1005/06/01 TB 14362 76 < 5 < 5 8 890 220 < 5 < 5 J 5 < 5 250 < 5 < 5 < 5 D 19000 < 5 < 5 < 5 J 508/27/01 TB 15154 200 < 5 < 5 < 5 8 D 210 < 5 < 5 8 < 5 < 50 < 5 < 5 < 5 D 6800 < 5 < 5 < 5 < 5

02/27/02 TB 16582 85 J 2 < 5 6 < 5 93 < 5 < 5 < 5 < 5 J 3 < 5 < 5 < 5 D 2300 < 5 < 5 < 5 < 505/12/02 TB 16998 210 < 10 < 10 11 < 10 61 < 10 < 10 < 10 < 10 < 100 < 10 < 10 < 10 D 6500 < 10 < 10 < 10 < 1009/07/02 TB 17877 83 J 3 < 5 33 D 2800 110 J 4 < 5 6 J 1 D 1300 J 3 < 5 J 1 D 30000 < 5 7 J 5 2511/11/02 TB 18183 15 < 5 < 5 6 D 630 29 < 5 < 5 < 5 < 5 230 < 5 < 5 < 5 D 9960 < 5 < 5 < 5 J 5

01/31/03 TB 18558 58 J 1 < 5 13 D 500 58 J 2 < 5 J 2 J 1 D 280 < 5 < 5 < 5 D 21000 < 5 J 2 < 5 J 905/06/03 TB 19160 94 < 5 < 5 9 < 15 82 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 13300 < 5 < 5 < 2 < 508/07/03 TB 19540 32 < 5 < 5 5 < 15 11 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 2240 < 5 < 5 < 2 < 511/06/03 TB 19925 21 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 1110 < 5 < 5 < 2 < 5

02/17/04 TB 20354 23 < 5 < 5 5 364 31 < 5 < 5 < 5 < 5 110 < 4 < 5 < 5 6070 < 5 < 5 < 2 J 4

09/08/04 TB 21130 10 < 5 < 5 8 458 49 < 5 < 5 < 5 < 5 213 < 4 < 5 < 5 9080 < 5 < 5 < 2 J 7

02/25/05 TB 22202 < 5 < 5 < 5 6 < 15 14 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 7260 < 5 < 5 < 2 < 505/19/05 TB 22621 < 5 < 5 < 5 13 441 25 < 5 < 5 < 5 < 5 80 < 4 < 5 < 5 27300 < 5 < 5 < 2 J 3

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 75 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

MW-067 EW1JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: Easement South

07/21/96 TB 00093 650 < 5000 < 5000 15000 < 10000 170000 < 5000 7900 < 5000 < 5000 < 10000 < 5000 < 5000 120000 < 5000 < 1700 < 10000 < 500008/18/96 TB 00261 500 < 5000 < 5000 < 5000 < 10000 220000 < 5000 8700 < 5000 < 5000 < 10000 < 5000 < 5000 < 35000 < 5000 < 2700 < 10000 < 500009/16/96 TB 00452 < 1000 < 1000 < 1000 < 2000 210000 < 1000 6900 < 1000 < 540 < 2000 < 1000 < 1000 300000 < 1000 3400 < 2000 210010/20/96 TB 00583 < 10000 < 10000 < 10000 < 20000 190000 < 10000 11000 < 10000 < 20000 < 10000 270000 < 10000 < 10000 < 20000 < 1000011/16/96 TB 00716 < 10000 < 10000 < 10000 < 20000 330000 < 10000 < 10000 < 10000 < 20000 < 10000 840000 < 10000 < 10000 < 20000 < 1000012/15/96 TB 00852 < 25000 < 25000 < 25000 < 50000 210000 < 25000 < 25000 < 25000 < 50000 < 25000 < 250000 < 25000 < 25000 < 50000 < 25000

01/19/97 TB 01015 < 5000 < 5000 < 5000 < 10000 100000 2700 < 5000 1700 < 10000 < 5000 86000 < 5000 < 5000 < 10000 < 500002/16/97 TB 01691 < 5000 < 5000 < 5000 J 7700 170000 J 3700 < 5000 J 2100 < 10000 < 5000 E 250000 < 5000 J 2100 < 10000 < 500004/09/97 TB 01997 < 10000 < 10000 < 10000 < 20000 150000 < 10000 < 10000 < 10000 < 20000 < 10000 < 100000 < 10000 < 10000 < 20000 < 1000006/07/97 TB 02253 < 5000 < 5000 < 5000 < 10000 86000 < 5000 < 5000 < 5000 < 10000 < 5000 J 32000 < 5000 < 5000 < 10000 < 5000

09/05/97 TB 02765 < 2500 < 2500 12000 < 5000 92000 4000 < 2500 < 2500 < 5000 < 2500 51000 < 2500 J 1900 < 5000 J 1000

12/14/97 TB 03470 < 250 < 250 500 < 1000 D 11000 < 250 J 180 < 500 J 100 < 500 < 500 < 250 < 500 < 250 J 160 < 750 < 250

03/10/98 TB 03960 < 250 < 250 J 160 < 500 7700 < 250 < 250 < 250 < 500 < 250 9800 < 250 < 250 < 500 < 25006/04/98 TB 04705 < 500 < 500 < 500 < 2000 4100 < 500 < 500 < 1000 < 500 < 1000 < 1000 < 500 < 1000 3300 < 500 < 1000 < 1500 < 50008/03/98 TB 05299 < 200 < 100 < 100 J 60 < 400 2500 < 100 < 100 < 200 < 100 < 200 < 200 < 100 < 200 29000 < 100 J 40 J 40 < 10011/02/98 TB 06339 < 100 < 5 < 5 J 3 < 20 18 < 5 < 5 < 10 < 5 < 10 < 10 < 5 < 10 10000 < 5 < 10 < 15 < 5

02/10/99 TB 07452 < 100 < 5 < 5 6 < 20 < 5 < 5 < 5 < 10 < 5 < 10 < 10 < 5 < 10 2800 < 5 < 10 < 15 < 508/20/99 TB 09383 < 10 < 5 < 5 17 < 5 J 4 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 D 15000 < 5 < 5 < 5 < 511/04/99 TB 10353 50 < 5 < 5 26 < 5 7 < 5 38 < 5 < 5 < 50 < 5 < 5 < 5 23000 < 5 < 5 < 5 < 5

10/18/00 TB 12847 40 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 D 3800 < 5 < 5 < 5 < 5

02/23/01 TB 13872 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 1100 < 5 < 5 < 5 < 505/06/01 TB 14363 < 10 < 5 < 5 < 5 < 5 J 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 D 3000 < 5 < 5 < 5 < 508/24/01 TB 15110 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 1200 < 5 < 5 < 5 < 511/05/01 TB 15518 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 1000 < 5 < 5 < 5 < 5

02/01/02 TB 16299 < 10 < 5 < 5 J 3 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 J 81 < 5 < 5 < 5 < 505/07/02 TB 16941 < 10 < 5 < 5 J 4 < 5 J 2 < 5 J 4 < 5 < 5 < 50 < 5 < 5 < 5 480 < 5 < 5 < 5 < 506/18/02 TB 17338 < 10 < 5 < 5 J 3 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 509/06/02 TB 17873 < 10 J 2 < 5 6 < 5 31 J 1 J 3 < 5 < 5 < 50 < 5 < 5 < 5 750 < 5 < 5 J 2 < 5

01/28/03 TB 18539 < 10 < 5 < 5 J 2 < 5 < 5 < 5 J 2 < 5 < 5 < 50 < 5 < 5 < 5 840 < 5 < 5 < 5 < 5

05/07/03 TB 19162 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 508/07/03 TB 19541 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 511/06/03 TB 19926 < 5 < 5 < 5 6 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

02/06/04 TB 20303 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 272 < 5 < 5 < 2 < 509/07/04 TB 21101 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 841 < 5 < 5 < 2 < 5

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 76 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

MW-067 EW1JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: Easement South

02/25/05 TB 22203 < 5 < 5 < 5 10 < 15 < 5 < 5 8 < 5 < 5 < 20 < 4 < 5 < 5 3920 < 5 < 5 < 2 < 505/17/05 TB 22563 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 16000 < 5 < 5 < 2 < 5

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 77 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

MW-067 EW2JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: Easement South

10/20/96 TB 00584 < 2500 < 2500 < 2500 < 5000 29000 < 2500 3800 < 2500 < 5000 < 2500 1100000 < 2500 2600 < 5000 < 250011/16/96 TB 00717 < 1200 < 1200 < 1200 7100 33000 < 1200 < 1200 < 1200 < 2500 < 1200 < 12000 < 1200 2400 < 2500 < 1200

01/19/97 TB 01016 < 1000 < 1000 < 1000 < 2000 16000 < 1000 < 1000 < 1000 < 2000 < 1000 < 10000 < 1000 1100 < 2000 < 100002/16/97 TB 01692 < 1000 < 1000 < 1000 < 2000 15000 < 1000 < 1000 J 220 < 2000 < 1000 < 10000 < 1000 J 860 < 2000 J 44004/09/97 TB 01998 < 500 < 500 < 500 < 1000 12000 J 270 < 500 < 500 < 1000 < 500 24000 < 500 670 < 1000 J 46006/07/97 TB 02254 < 1000 < 1000 < 1000 < 2000 31000 < 1000 < 1000 < 1000 < 2000 < 1000 < 10000 < 1000 4200 2700 J 97009/05/97 TB 02766 < 500 < 500 < 500 < 1000 5300 J 490 < 500 < 500 < 1000 < 500 < 5000 < 500 J 250 < 1000 J 29012/14/97 TB 03471 < 250 < 250 500 < 1000 7800 < 250 380 < 500 < 250 < 500 < 500 < 250 < 500 < 250 J 260 < 750 670

05/11/98 TB 04530 330 J 10 < 10 350 < 20 95 100 20 20 < 20 < 10 1100 < 10 110 < 20 280

08/03/98 TB 05300 4800 14 < 10 300 < 40 790 16 34 J 8 J 4 < 20 < 20 < 10 J 4 2000 < 10 64 32 300

11/02/98 TB 06340 2000 < 5 < 5 E 220 < 20 110 < 5 25 < 10 J 4 < 10 < 10 < 5 < 10 1300 < 5 15 < 15 210

02/10/99 TB 07453 2200 J 2 < 5 160 < 20 57 J 1 6 J 2 < 5 < 10 < 10 < 5 < 10 190 < 5 12 < 15 210

08/20/99 TB 09369 E 2600 < 5 < 5 71 < 5 70 < 5 J 5 < 5 < 5 < 50 < 5 < 5 < 5 110 < 5 25 < 5 180

11/04/99 TB 10354 450 < 5 < 5 62 < 5 45 < 5 17 < 5 < 5 < 50 < 5 < 5 < 5 150 < 5 32 < 5 130

10/18/00 TB 12848 920 < 5 < 5 63 < 5 81 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 86 < 5 171

02/23/01 TB 13873 90 < 5 < 5 37 7 70 < 5 10 < 5 < 5 < 50 < 5 < 5 < 5 230 < 5 < 5 < 5 4405/06/01 TB 14364 520 < 5 < 5 24 < 5 32 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 150 < 5 < 5 < 5 11408/24/01 TB 15111 D 700 < 5 < 5 21 < 5 42 < 5 9 54 < 5 < 50 < 5 < 5 < 5 1100 < 5 8 < 5 10911/05/01 TB 15519 650 < 20 < 20 J 16 < 20 40 < 20 < 20 < 20 < 20 < 200 < 20 < 20 < 20 J 180 < 20 21 < 20 84

02/02/02 TB 16307 D 1200 < 5 < 5 21 < 5 110 < 5 J 4 J 4 < 5 < 50 < 5 < 5 < 5 930 < 5 37 < 5 20905/07/02 TB 16942 D 1100 < 5 < 5 10 < 5 60 < 5 < 5 J 3 < 5 < 50 < 5 < 5 < 5 990 < 5 25 < 5 12106/18/02 TB 17339 D 380 < 5 < 5 8 < 5 87 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 200 < 5 J 4 < 5 16009/06/02 TB 17874 250 < 5 < 5 9 < 5 50 < 5 J 2 < 5 < 5 < 50 J 2 < 5 < 5 870 < 5 11 < 5 < 5

01/28/03 TB 18540 D 730 < 5 < 5 6 < 5 67 < 5 J 3 < 5 < 5 < 50 J 2 < 5 < 5 1000 < 5 14 < 5 11505/07/03 TB 19163 368 < 5 < 5 7 < 15 57 < 5 5 < 5 < 5 < 20 < 4 < 5 < 5 968 < 5 10 < 2 8008/07/03 TB 19542 1180 < 5 < 5 7 < 15 98 < 5 6 < 5 < 5 < 20 < 4 < 5 < 5 796 < 5 17 < 2 12711/06/03 TB 19927 825 < 20 < 20 < 20 < 60 124 < 20 < 20 < 20 < 20 < 80 < 16 < 20 < 20 820 < 20 20 < 8 128

02/06/04 TB 20304 1150 < 25 < 25 < 25 < 75 264 < 25 < 25 < 25 < 25 < 100 < 20 < 25 < 25 518 < 25 62 < 10 194

09/08/04 TB 21131 2450 < 25 < 25 < 25 < 75 448 < 25 < 25 < 25 < 25 < 100 < 20 < 25 < 25 1090 < 25 139 < 10 306

02/25/05 TB 22204 4050 < 100 < 100 < 100 < 300 839 < 100 < 100 < 100 < 100 < 400 < 80 < 100 < 100 < 1000 < 100 447 < 40 477

05/17/05 TB 22564 5170 < 100 < 100 < 100 < 300 937 < 100 < 100 < 100 < 100 < 400 < 80 < 100 < 100 37000 < 100 523 < 40 615

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 78 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

MW-067 EW3JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: Easement South

10/20/96 TB 00585 < 5000 < 5000 < 5000 < 10000 91000 < 5000 8400 < 5000 < 10000 < 5000 440000 < 5000 5600 < 10000 < 500011/16/96 TB 00718 < 5000 < 5000 5300 24000 100000 < 5000 < 5000 < 5000 < 10000 < 5000 < 50000 < 5000 5400 < 10000 < 5000

01/19/97 TB 01017 < 2500 < 2500 < 2500 < 5000 40000 < 2500 < 2500 < 2500 < 5000 < 2500 < 25000 < 2500 3300 < 5000 < 250002/16/97 TB 01693 < 2500 < 2500 < 2500 < 5000 50000 J 500 < 2500 < 2500 < 5000 6800 < 25000 3700 3300 J 3200 < 250004/09/97 TB 01999 < 2500 < 2500 < 2500 < 5000 76000 < 2500 J 750 < 2500 < 5000 < 2500 < 25000 < 2500 14000 J 4800 J 100006/07/97 TB 02255 < 1000 < 1000 < 1000 < 2000 24000 < 1000 1800 < 1000 < 2000 < 1000 < 10000 < 1000 12000 < 2000 230009/05/97 TB 02767 < 2500 < 2500 < 2500 < 5000 73000 < 2500 < 2500 7100 < 5000 < 2500 39000 < 2500 11000 < 5000 < 250012/14/97 TB 03472 < 2500 < 2500 J 1300 < 10000 56000 < 2500 < 2500 < 5000 < 2500 < 5000 < 5000 < 2500 < 5000 < 2500 J 3000 < 7500 < 2500

03/10/98 TB 03961 < 1200 < 1200 J 1000 < 2500 43000 < 1200 < 1200 < 1200 < 2500 < 1200 E 52000 < 1200 J 1000 < 2500 < 1200

05/11/98 TB 04531 < 1250 < 1250 < 1250 2700 B 7200 46000 < 1250 < 1250 < 1250 < 2500 < 1250 40000 < 1250 1400 J 1200 < 125008/03/98 TB 05301 J 500 < 1250 < 1250 < 1250 < 5000 14000 < 1250 < 1250 < 2500 < 1250 < 2500 < 2500 < 1250 < 2500 13000 < 1250 J 500 J 2500 < 125009/16/98 TB 05836 < 2000 J 930 < 1000 2600 J 1400 43000 < 1000 J 900 < 2000 < 1000 < 2000 < 2000 < 1000 < 2000 33000 < 1000 2200 5200 < 100010/12/98 TB 06136 < 2000 < 1000 < 1000 1700 < 4000 23000 < 1000 J 810 < 2000 < 1000 < 2000 < 2000 < 1000 < 2000 18000 < 1000 J 950 J 2400 < 100011/02/98 TB 06341 J 1500 < 1000 < 1000 J 760 < 4000 12000 < 1000 J 450 < 2000 < 1000 < 2000 < 2000 < 1000 < 2000 J 15000 < 1000 J 480 J 1600 < 100012/01/98 TB 06810 < 2000 < 100 < 100 770 < 400 130 < 100 570 < 200 < 100 < 200 < 200 < 100 < 200 9600 < 100 < 200 < 300 < 100

01/11/99 TB 07185 < 10000 < 500 < 500 J 430 < 2000 3500 < 500 J 130 < 1000 < 500 < 1000 < 1000 < 500 < 1000 J 5300 < 500 J 130 J 580 < 50002/10/99 TB 07454 840 40 < 10 170 < 40 510 J 6 32 < 20 < 10 < 20 < 20 < 10 J 5 3800 < 10 22 88 8208/20/99 TB 09368 640 32 < 10 160 < 10 300 < 10 18 < 10 J 4 < 100 < 10 < 10 < 10 E 4700 < 10 J 4 66 9211/04/99 TB 10355 200 64 < 20 180 < 20 140 < 20 J 16 24 < 20 < 200 < 20 < 20 < 20 3600 < 20 < 20 120 J 36

10/18/00 TB 12849 430 9 < 5 36 < 5 95 < 5 8 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 5 38 93

02/24/01 TB 13890 19 15 < 5 29 < 5 14 < 5 J 4 < 5 < 5 < 50 < 5 < 5 < 5 220 < 5 < 5 12 1405/06/01 TB 14365 1700 6 < 5 28 < 5 44 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 570 < 5 < 5 16 2308/24/01 TB 15112 D 520 J 4 < 5 21 < 5 17 < 5 < 5 26 < 5 < 50 < 5 < 5 < 5 520 < 5 < 5 < 5 5411/05/01 TB 15520 960 < 50 < 50 < 50 < 50 80 < 50 < 50 < 50 < 50 < 500 < 50 < 50 < 50 J 460 < 50 < 50 < 50 J 100

02/02/02 TB 16308 D 640 13 < 5 36 < 5 100 < 5 J 3 J 3 < 5 < 50 < 5 < 5 < 5 690 < 5 38 5 16805/07/02 TB 16943 D 1300 19 < 5 27 < 5 180 < 5 < 5 J 2 < 5 < 50 < 5 < 5 J 2 580 < 5 34 24 17706/18/02 TB 17340 D 460 < 5 < 5 21 8 93 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 590 < 5 15 < 5 10609/06/02 TB 17875 D 530 9 < 5 11 < 5 D 310 < 5 < 5 < 5 < 5 < 50 < 5 < 5 J 2 580 < 5 47 47 J 311/11/02 TB 18184 D 2400 11 < 5 11 < 5 D 370 < 5 < 5 J 3 < 5 < 50 < 5 < 5 < 5 580 < 5 55 9 240

01/28/03 TB 18541 D 1800 J 4 < 5 9 < 5 420 < 5 < 5 6 < 5 < 50 < 5 < 5 < 5 860 < 5 80 < 5 262

05/07/03 TB 19164 1640 12 < 10 10 < 30 470 < 10 < 10 < 10 < 10 < 40 < 8 < 10 < 10 738 < 10 112 < 4 296

08/07/03 TB 19543 3750 < 20 < 20 < 20 < 60 684 < 20 < 20 < 20 < 20 < 80 < 16 < 20 < 20 732 < 20 192 < 8 404

11/06/03 TB 19928 2880 < 50 < 50 < 50 < 150 770 < 50 < 50 < 50 < 50 < 200 < 40 < 50 < 50 650 < 50 140 < 20 410

02/13/04 TB 20352 3960 < 80 < 80 < 80 < 240 1910 < 80 < 80 < 80 < 80 < 320 < 64 < 80 < 80 < 800 < 80 375 < 32 65709/08/04 TB 21132 4090 < 20 < 20 < 20 < 60 706 < 20 < 20 < 20 < 20 < 80 < 16 < 20 < 20 427 < 20 103 < 8 328

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 79 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

MW-067 EW3JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: Easement South

10/19/04 TB 21343 763 < 20 < 20 < 20 < 60 272 < 20 < 20 < 20 < 20 < 80 < 16 < 20 < 20 590 < 20 < 20 < 8 8911/16/04 TB 21403 1160 < 20 < 20 < 20 < 60 415 < 20 < 20 < 20 < 20 < 80 < 16 < 20 < 20 422 < 20 52 < 8 17912/02/04 TB 21510 1270 < 25 < 25 < 25 < 75 365 < 25 < 25 < 25 < 25 < 100 < 20 < 25 < 25 934 < 25 35 < 10 160

01/12/05 TB 21771 1310 < 25 < 25 < 25 < 75 408 < 25 < 25 < 25 < 25 < 100 < 20 < 25 < 25 814 < 25 31 < 10 21302/25/05 TB 22205 1280 < 25 < 25 < 25 < 75 570 < 25 < 25 < 25 < 25 < 100 < 20 < 25 < 25 525 < 25 30 < 10 13804/09/05 TB 22316 607 5 < 5 < 5 < 15 338 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 975 < 5 32 < 2 175

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 80 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

MW-116JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: Easement South

12/01/03 TB 20087 6 22 < 5 25 < 15 9 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 242 < 5 < 5 143 < 512/02/03 TB 20093 < 5 21 < 5 26 < 15 8 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 211 < 5 < 5 143 < 512/03/03 TB 20121 < 5 24 < 5 28 < 15 7 < 5 < 5 < 5 < 5 < 20 < 4 < 5 5 235 < 5 < 5 155 < 512/15/03 TB 20190 < 5 25 < 5 28 < 15 12 < 5 < 5 < 5 < 5 < 20 < 4 < 5 5 111 < 5 < 5 173 < 5

01/12/04 TB 20210 < 5 18 < 5 21 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 103 < 5 < 5 128 < 502/17/04 TB 20356 < 5 28 < 5 35 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 5 < 50 < 5 < 5 182 < 504/08/04 TB 20640 < 5 26 < 5 31 < 15 15 < 5 < 5 < 5 < 5 < 20 < 4 < 5 5 211 < 5 < 5 185 < 505/20/04 TB 20753 < 5 21 < 5 23 < 15 20 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 493 < 5 < 5 138 < 506/28/04 TB 20817 < 5 28 < 5 32 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 6 224 < 5 < 5 202 < 507/20/04 TB 20854 < 5 27 < 5 31 < 15 50 < 5 < 5 < 5 < 5 < 20 < 4 < 5 5 439 < 5 < 5 187 < 5

09/09/04 TB 21154 < 5 29 < 5 34 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 5 92 < 5 < 5 166 < 510/19/04 TB 21340 < 5 33 < 5 40 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 6 < 50 < 5 < 5 194 < 511/22/04 TB 21506 < 5 29 < 5 36 < 15 7 < 5 < 5 < 5 < 5 < 20 < 4 < 5 6 222 < 5 < 5 188 < 512/02/04 TB 21507 < 5 29 < 5 33 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 6 216 < 5 < 5 173 < 5

01/12/05 TB 21772 < 5 36 < 5 44 < 15 92 < 5 < 5 < 5 < 5 < 20 < 4 < 5 7 143 < 5 < 5 265 < 502/28/05 TB 22223 < 5 31 < 5 28 < 15 60 < 5 < 5 < 5 < 5 < 20 < 4 < 5 6 173 < 5 < 5 197 < 505/19/05 TB 22622 < 5 48 < 5 59 < 15 19 < 5 < 5 < 5 < 5 < 20 < 4 < 5 9 166 < 5 < 5 252 < 5

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 81 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

MW-121JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: Easement South

03/09/04 TB 20582 332 113 17 106 370 506 16 < 5 42 < 5 J 38 < 4 < 5 18 2170 7 156 250 11303/16/04 TB 20591 158 83 11 66 282 359 11 < 10 28 < 10 < 40 < 8 < 10 14 1410 < 10 98 217 7203/22/04 TB 20617 182 86 11 69 343 363 12 < 10 24 < 10 < 40 < 8 < 10 14 1840 < 10 91 231 5804/08/04 TB 20642 88 78 < 10 54 277 320 10 < 10 15 < 10 < 40 < 8 < 10 14 1390 < 10 64 233 3605/20/04 TB 20755 77 124 14 79 419 460 15 < 10 16 < 10 J 41 < 8 < 10 22 2240 < 10 84 364 3606/28/04 TB 20819 100 248 28 131 542 753 27 < 10 22 < 10 J 58 < 8 < 10 42 2780 < 10 140 558 5307/20/04 TB 20856 73 260 31 147 945 874 26 < 20 20 < 20 J 85 < 16 < 20 41 4060 < 20 142 775 J 2609/10/04 TB 21175 296 550 48 362 2180 1590 46 < 20 38 < 20 232 < 16 < 20 76 7700 < 20 292 1270 8510/19/04 TB 21342 387 476 37 255 1300 1930 35 < 5 31 < 5 188 < 4 < 5 57 6280 10 261 988 10911/16/04 TB 21402 448 336 < 50 247 1730 1120 < 50 < 50 < 50 < 50 < 200 < 40 < 50 < 50 13600 < 50 213 653 J 49

12/02/04 TB 21509 200 888 96 466 1930 3360 68 < 50 85 < 50 < 200 < 40 < 50 133 14400 < 50 643 1870 185

01/12/05 TB 21773 110 627 < 80 397 < 240 2230 < 80 < 80 < 80 < 80 < 320 < 64 < 80 < 80 9580 < 80 425 861 J 82

02/23/05 TB 22177 199 345 < 40 341 1750 1230 < 40 < 40 < 40 < 40 J 221 < 32 < 40 41 7950 < 40 239 663 J 54

04/09/05 TB 22315 213 451 < 50 407 2510 1570 < 50 < 50 < 50 < 50 < 200 < 40 < 50 50 18900 < 50 291 619 J 57

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 82 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

PS-008JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: Easement South

11/16/97 TB 03314 1700 < 1300 6000 J 2000 29000 < 1300 < 1300 < 2500 < 1300 < 2500 < 1300 < 2500 120000 < 1300 7200 J 1600 J 530

08/04/98 TB 05334 J 1500 J 2500 < 2500 J 2000 < 10000 42000 < 2500 < 2500 J 500 < 2500 < 5000 < 5000 < 2500 < 5000 67000 < 2500 7000 J 3500 < 250009/15/98 TB 05827 3900 2000 < 250 3100 < 1000 D 50000 < 250 J 160 1000 < 250 < 500 < 500 < 250 J 220 41000 < 250 D 11000 3500 120010/16/98 TB 06151 4200 3300 < 500 7500 < 2000 D 28000 < 500 J 290 1600 < 500 < 1000 < 1000 < 500 < 1000 D 48000 < 500 18000 2900 200011/03/98 TB 06348 < 20000 1200 < 1000 1200 < 4000 22000 < 1000 < 1000 J 510 < 1000 < 2000 < 2000 < 1000 < 2000 J 18000 < 1000 6500 J 2400 J 400

01/11/99 TB 07188 < 20000 2200 < 1000 3400 J 3600 24000 < 1000 < 1000 J 270 < 1000 < 2000 < 2000 < 1000 < 2000 70000 < 1000 4300 4400 J 28004/19/99 TB 08072 < 5000 1200 < 250 7600 < 1000 8900 < 250 J 140 J 320 < 250 < 500 < 500 < 250 < 500 65000 < 250 5400 J 540 93005/17/99 TB 08323 < 5000 1100 < 250 5700 < 1000 8900 < 250 J 140 J 270 < 250 < 500 < 500 < 250 J 89 34000 J 110 5300 J 400 J 90008/09/99 TB 09184 2000 1400 < 800 1800 4100 19000 < 800 < 800 J 670 < 800 < 8000 < 800 < 800 < 800 94000 < 800 6800 990 J 1000

10/18/99 TB 10086 3700 820 < 800 1600 5000 18800 < 800 < 800 1000 < 800 < 8000 < 800 < 800 < 800 140000 < 800 6890 < 800 J 1410

11/03/99 TB 10320 5700 800 < 400 1360 4140 14500 < 400 < 400 480 < 400 < 4000 < 400 < 400 < 400 124000 < 400 5130 J 240 J 640

12/21/99 TB 10790 1850 690 < 400 640 1110 18800 < 400 < 400 540 < 400 < 4000 < 400 < 400 < 400 117000 < 400 5200 580 J 640

05/21/00 TB 11813 1300 620 < 125 1100 < 125 5200 < 125 J 80 880 < 125 < 1250 < 125 < 125 < 125 28000 < 125 4600 260 2000

06/06/00 TB 11909 7760 300 < 125 325 < 125 3830 < 125 < 125 850 < 125 < 1250 < 125 < 125 < 125 18900 < 125 3500 J 100 140008/08/00 TB 12357 < 160 170 < 80 170 < 80 1700 < 80 < 80 790 < 80 < 800 < 80 < 80 < 80 3300 < 80 2500 130 131210/10/00 TB 12765 680 270 < 80 J 80 < 80 2200 < 80 < 80 240 < 80 < 800 < 80 < 80 < 80 29000 J 48 1200 570 J 240

01/06/01 TB 13527 870 250 < 50 95 < 50 2100 < 50 < 50 350 < 50 < 500 < 50 < 50 < 50 9700 < 50 1200 600 87002/23/01 TB 13882 800 230 < 50 290 130 1200 < 50 < 50 420 < 50 < 500 < 50 < 50 < 50 19000 < 50 1500 120 171003/16/01 TB 14021 810 390 < 40 250 86 960 < 40 < 40 230 < 40 < 400 < 40 < 40 < 40 13000 < 40 920 550 102404/06/01 TB 14151 710 200 < 25 180 70 850 < 25 < 25 240 < 25 < 250 < 25 < 25 < 25 D 5100 < 25 930 130 99008/24/01 TB 15098 730 91 < 20 88 83 620 < 20 < 20 350 < 20 < 200 < 20 < 20 < 20 D 13000 < 20 920 93 96011/05/01 TB 15522 340 210 < 25 150 160 770 < 25 < 25 270 < 25 < 250 < 25 < 25 < 25 D 11000 < 25 770 240 780

02/02/02 TB 16305 520 310 < 40 150 200 1500 < 40 < 40 450 < 40 < 400 < 40 < 40 < 40 13000 < 40 1100 370 154405/04/02 TB 16903 160 280 < 10 82 48 400 J 8 15 98 J 10 J 17 < 10 < 10 J 5 D 6000 < 10 250 350 62008/30/02 TB 17832 470 560 < 25 J 23 93 D 2800 J 6 J 7 280 27 J 41 < 25 < 25 J 9 D 71000 J 9 880 190 J 290

01/30/03 TB 18544 95 90 < 13 18 83 490 < 13 J 4 100 < 13 < 125 < 13 < 13 < 13 D 20000 < 13 200 220 36505/07/03 TB 19176 182 62 < 10 18 34 312 < 10 < 10 64 < 10 < 40 < 8 < 10 < 10 7450 < 10 122 226 13408/07/03 TB 19559 512 128 < 10 40 J 54 870 < 10 < 10 380 12 < 40 < 8 < 10 < 10 6950 < 10 865 82 79411/07/03 TB 19941 448 232 < 20 64 < 60 1430 < 20 < 20 480 < 20 < 80 < 16 < 20 < 20 4620 < 20 872 184 1072

02/06/04 TB 20286 255 311 < 50 < 50 < 150 1860 < 50 < 50 220 < 50 < 200 < 40 < 50 < 50 5320 < 50 556 872 683

04/08/04 TB 20649 268 228 < 25 43 < 75 1270 < 25 < 25 150 < 25 < 100 < 20 < 25 < 25 4450 < 25 415 540 413

05/19/04 TB 20746 200 156 < 25 < 25 < 75 765 < 25 < 25 80 < 25 < 100 < 20 < 25 < 25 5650 < 25 285 613 200

06/25/04 TB 20810 313 76 < 10 15 J 57 470 < 10 < 10 81 < 10 < 40 < 8 < 10 < 10 4970 < 10 214 167 175

09/07/04 TB 21102 92 121 < 20 30 < 60 555 < 20 < 20 43 < 20 < 80 < 16 < 20 < 20 5430 < 20 109 150 131

02/18/05 TB 22126 91 79 < 10 14 < 30 436 < 10 < 10 < 10 < 10 < 40 < 8 < 10 < 10 4620 < 10 40 110 117

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 83 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

PS-008JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: Easement South

05/17/05 TB 22566 35 60 < 5 51 < 15 80 < 5 28 < 5 < 5 < 20 < 4 < 5 < 5 7720 < 5 < 5 91 29

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 84 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

PS-011JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: Easement South

11/16/97 TB 03313 < 5000 < 5000 < 5000 < 20000 83000 < 5000 J 2100 < 10000 < 5000 < 10000 < 5000 < 10000 31000 < 5000 < 10000 < 15000 < 5000

08/04/98 TB 05335 < 1000 500 < 500 J 300 < 2000 22000 < 500 < 500 J 200 < 500 < 1000 < 1000 < 500 < 1000 29000 < 500 1800 1900 < 50010/16/98 TB 06152 < 10000 < 500 < 500 J 280 < 2000 16000 < 500 < 500 J 180 < 500 < 1000 < 1000 < 500 < 1000 17000 < 500 1700 J 920 < 50011/03/98 TB 06349 < 20000 < 1000 < 1000 < 1000 < 4000 13000 < 1000 < 1000 < 2000 < 1000 < 2000 < 2000 < 1000 < 2000 J 14000 < 1000 < 2000 J 440 < 100012/01/98 TB 06813 < 10000 < 500 < 500 < 500 < 2000 7900 < 500 < 500 < 1000 < 500 < 1000 < 1000 < 500 < 1000 J 7500 < 500 J 350 J 230 < 500

01/08/99 TB 07173 < 5000 < 250 < 250 < 250 < 1000 9900 < 250 < 250 < 500 < 250 < 500 < 500 < 250 < 500 9900 < 250 J 440 J 310 < 25002/16/99 TB 07540 < 4000 < 200 < 200 J 130 < 800 5500 < 200 < 200 < 400 < 200 < 400 < 400 < 200 < 400 4600 < 200 970 < 600 < 20004/13/99 TB 08028 < 500 J 21 < 25 < 25 < 100 700 < 25 < 25 < 50 < 25 < 50 < 50 < 25 < 50 6700 < 25 J 45 J 72 J 1305/21/99 TB 08363 < 500 J 17 < 25 57 < 100 520 < 25 < 25 J 17 < 25 < 50 < 50 < 25 < 50 6300 < 25 190 < 75 120

08/20/99 TB 09386 < 400 J 120 < 200 < 200 < 200 D 13000 < 200 < 200 < 200 < 200 < 2000 < 200 < 200 < 200 5800 < 200 1500 320 < 20010/18/99 TB 10087 J 390 < 250 < 250 < 250 < 250 8700 < 250 < 250 < 250 < 250 < 2500 < 250 < 250 < 250 5750 < 250 480 J 240 J 68

11/03/99 TB 10321 < 500 < 250 < 250 < 250 < 250 6900 < 250 < 250 < 250 < 250 < 2500 < 250 < 250 < 250 J 4940 < 250 350 J 140 < 25012/21/99 TB 10791 500 < 250 < 250 < 250 < 250 D 31700 < 250 < 250 < 250 < 250 < 2500 < 250 < 250 < 250 8300 < 250 1600 680 J 100

05/21/00 TB 11814 < 160 < 80 < 80 < 80 < 80 2900 < 80 < 80 < 80 < 80 < 800 < 80 < 80 < 80 6900 < 80 140 J 65 < 8006/06/00 TB 11910 < 160 < 80 < 80 < 80 < 80 2620 < 80 < 80 < 80 < 80 < 800 < 80 < 80 < 80 6400 < 80 110 J 76 < 8008/05/00 TB 12333 < 250 < 125 < 125 < 125 < 125 2400 < 125 < 125 < 125 < 125 < 1250 < 125 < 125 < 125 6200 < 125 < 125 < 125 < 12510/10/00 TB 12766 < 160 < 80 < 80 < 80 < 80 2900 < 80 < 80 < 80 < 80 < 800 < 80 < 80 < 80 7900 < 80 J 60 J 66 < 8012/07/00 TB 13362 < 250 < 125 < 125 J 86 < 125 D 4800 < 125 < 125 J 55 < 125 < 1250 < 125 < 125 < 125 30000 < 125 330 < 125 150

01/06/01 TB 13526 < 160 160 < 80 250 < 80 D 5400 < 80 < 80 340 < 80 < 800 < 80 < 80 < 80 4400 < 80 1700 330 68802/23/01 TB 13885 < 200 180 < 100 350 < 100 3500 < 100 < 100 140 < 100 < 1000 < 100 < 100 < 100 11000 < 100 1000 180 50003/14/01 TB 14010 820 170 < 100 < 100 < 100 D 7700 < 100 < 100 130 < 100 < 1000 < 100 < 100 < 100 D 6900 < 100 620 130 J 22004/06/01 TB 14153 3300 < 100 < 100 < 100 < 100 3300 < 100 < 100 < 100 < 100 < 1000 < 100 < 100 < 100 6600 < 100 170 < 100 J 10005/09/01 TB 14380 D 61000 110 < 50 < 50 < 50 1000 < 50 < 50 < 50 < 50 < 500 < 50 < 50 < 50 2500 < 50 160 < 50 19006/03/01 TB 14578 2400 < 80 < 80 < 80 < 80 1900 < 80 < 80 < 80 < 80 < 800 < 80 < 80 < 80 2600 < 80 110 < 80 J 8007/02/01 TB 14682 4700 < 80 < 80 < 80 < 80 2800 < 80 < 80 J 48 < 80 < 800 < 80 < 80 < 80 < 1600 < 80 260 < 80 J 6408/24/01 TB 15099 82 J 24 < 25 52 < 25 D 1400 < 25 < 25 46 < 25 < 250 < 25 < 25 < 25 6800 < 25 260 J 11 13009/11/01 TB 15233 J 100 < 80 < 80 < 80 < 80 3600 < 80 < 80 J 75 < 80 < 800 < 80 < 80 < 80 8200 < 80 83 < 80 J 4810/14/01 TB 15335 < 200 < 100 < 100 < 100 < 100 2000 < 100 < 100 < 100 < 100 < 1000 < 100 < 100 < 100 3800 < 100 310 < 100 J 12011/06/01 TB 15542 D 1100 46 < 40 40 < 40 1000 < 40 < 40 < 40 < 40 < 400 < 40 < 40 < 40 3700 < 40 180 J 37 136

02/02/02 TB 16306 J 39 J 50 < 50 J 42 59 1500 < 50 < 50 J 43 < 50 < 500 < 50 < 50 < 50 5300 < 50 270 67 J 90

04/01/02 TB 16767 J 68 J 38 < 40 < 40 < 40 1300 < 40 < 40 59 < 40 < 400 < 40 < 40 < 40 8300 < 40 110 J 32 J 56

05/04/02 TB 16904 490 110 < 50 < 50 < 50 D 2600 < 50 < 50 120 < 50 < 500 < 50 < 50 < 50 9400 < 50 210 J 29 J 140

06/18/02 TB 17341 20 32 < 5 49 11 230 < 5 J 4 J 4 < 5 < 50 < 5 < 5 J 3 D 3100 < 5 37 6 43

08/30/02 TB 17833 83 44 < 40 < 40 < 40 D 3300 < 40 < 40 92 < 40 < 400 < 40 < 40 < 40 9800 < 40 J 34 J 13 J 96

11/11/02 TB 18189 89 29 < 25 < 25 < 25 D 1490 < 25 < 25 J 15 < 25 < 250 < 25 < 25 < 25 6700 < 25 26 J 13 J 19

01/23/03 TB 18516 72 J 11 < 25 < 25 < 25 890 < 25 < 25 < 25 < 25 < 250 < 25 < 25 < 25 3100 < 25 J 11 J 9 J 15

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 85 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

PS-011JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: Easement South

01/30/03 TB 18545 < 50 J 11 < 25 < 25 91 570 < 25 < 25 < 25 < 25 < 250 < 25 < 25 < 25 D 21000 < 25 < 25 < 25 < 2504/15/03 TB 19118 150 44 < 25 < 25 < 75 3770 < 25 < 25 40 < 25 < 100 < 20 < 25 < 25 4090 < 25 54 < 10 J 2505/06/03 TB 19152 < 20 < 20 < 20 < 20 < 60 828 < 20 < 20 < 20 < 20 < 80 < 16 < 20 < 20 2250 < 20 < 20 J 8 < 2006/17/03 TB 19394 < 25 < 25 < 25 < 25 < 75 995 < 25 < 25 < 25 < 25 < 100 < 20 < 25 < 25 2360 < 25 < 25 < 10 < 2507/09/03 TB 19474 30 < 25 < 25 < 25 < 75 1060 < 25 < 25 < 25 < 25 < 100 < 20 < 25 < 25 1240 < 25 < 25 < 10 J 1008/06/03 TB 19538 21 18 < 5 < 5 < 15 780 < 5 < 5 12 < 5 < 20 < 4 < 5 < 5 2560 < 5 44 13 2609/19/03 TB 19831 < 25 < 25 < 25 < 25 < 75 1030 < 25 < 25 < 25 < 25 < 100 < 20 < 25 < 25 2020 < 25 50 J 45 J 2010/10/03 TB 19898 60 25 < 25 < 25 < 75 2090 < 25 < 25 30 < 25 < 100 < 20 < 25 < 25 2190 < 25 < 25 < 10 < 2511/07/03 TB 19952 45 30 < 25 < 25 < 75 1370 < 25 < 25 30 < 25 < 100 < 20 < 25 < 25 2020 < 25 100 J 25 J 3512/12/03 TB 20166 34 < 10 < 10 < 10 < 30 426 < 10 < 10 < 10 < 10 < 40 < 8 < 10 < 10 2690 < 10 < 10 J 4 < 10

02/06/04 TB 20288 < 20 21 < 20 < 20 < 60 653 < 20 < 20 < 20 < 20 < 80 < 16 < 20 < 20 1400 < 20 43 J 11 J 17

04/08/04 TB 20650 48 24 < 20 < 20 < 60 868 < 20 < 20 20 < 20 < 80 < 16 < 20 < 20 2320 < 20 68 J 16 J 24

05/19/04 TB 20747 32 22 < 20 < 20 < 60 940 < 20 < 20 < 20 < 20 < 80 < 16 < 20 < 20 2440 < 20 53 J 18 J 16

06/25/04 TB 20811 71 < 20 < 20 < 20 < 60 661 < 20 < 20 < 20 < 20 < 80 < 16 < 20 < 20 2140 < 20 < 20 J 18 J 8

07/20/04 TB 20857 < 20 < 20 < 20 < 20 < 60 603 < 20 < 20 < 20 < 20 < 80 < 16 < 20 < 20 2240 < 20 20 J 11 < 2009/07/04 TB 21103 < 20 < 20 < 20 < 20 < 60 811 < 20 < 20 < 20 < 20 < 80 < 16 < 20 < 20 1340 < 20 < 20 < 8 < 20

02/25/05 TB 22190 7 17 < 5 < 5 < 15 166 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 1190 < 5 7 14 J 605/17/05 TB 22567 < 5 < 5 < 5 < 5 < 15 32 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 1210 < 5 < 5 < 2 < 5

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 86 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

PS-013JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: Easement South

11/16/99 TB 10468 < 10 9 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 5

02/25/02 TB 16547 < 10 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 508/30/02 TB 17835 < 10 86 < 5 < 5 < 5 J 2 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 5

02/04/03 TB 18586 < 10 24 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 505/07/03 TB 19177 < 5 236 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 511/07/03 TB 19942 < 5 23 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

02/10/04 TB 20306 < 5 8 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 509/07/04 TB 21105 < 5 31 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

02/18/05 TB 22127 < 5 34 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 505/17/05 TB 22568 < 5 194 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 87 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

PS-028JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: Easement South

06/05/01 TB 14598 < 10 J 5 < 5 9 9 58 < 5 < 5 < 5 < 5 < 10 < 5 < 5 < 5 D 120000 < 5 < 5 8 < 507/02/01 TB 14685 < 10 11 < 5 14 23 110 < 5 6 < 5 < 5 < 50 < 5 < 5 < 5 760 < 5 < 5 19 < 512/18/01 TB 15993 < 10 77 < 5 280 2400 D 3600 10 26 J 3 J 4 620 < 5 < 5 7 D 34000 < 5 21 130 J 9

01/04/02 TB 16102 < 10 35 < 5 < 5 D 330 D 1100 < 5 J 3 < 5 < 5 53 < 5 < 5 J 4 D 13000 < 5 5 110 < 505/07/02 TB 16939 < 80 < 40 < 40 < 40 210 1600 < 40 < 40 < 40 < 40 J 53 < 40 < 40 < 40 D 20000 < 40 < 40 J 31 < 4007/08/02 TB 17403 < 10 < 5 < 5 < 5 < 5 11 < 5 < 5 < 5 < 5 < 50 J 4 < 5 < 5 D 7600 < 5 < 5 < 5 < 508/10/02 TB 17673 D 140 J 5 < 10 < 10 < 10 440 < 10 < 10 < 10 < 10 < 100 < 10 < 10 < 10 3800 < 10 J 3 14 < 1011/19/02 TB 18208 J 7 15 < 5 < 5 < 5 200 < 5 6 < 5 < 5 < 50 < 5 < 5 < 5 1800 < 5 J 1 25 < 5

01/27/03 TB 18529 < 10 11 < 5 14 50 D 700 J 1 6 < 5 J 2 J 12 < 5 < 5 < 5 D 9100 < 5 J 2 12 < 5

04/15/03 TB 19120 < 5 14 < 5 < 5 < 15 1070 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 4500 < 5 < 5 66 < 505/06/03 TB 19154 < 20 20 < 20 44 436 496 < 20 < 20 < 20 < 20 < 80 < 16 < 20 < 20 23100 < 20 < 20 < 8 < 2006/17/03 TB 19396 < 20 < 20 < 20 < 20 916 148 < 20 < 20 < 20 < 20 184 < 16 < 20 < 20 21400 < 20 < 20 < 8 < 2007/08/03 TB 19471 < 5 19 < 5 6 < 15 92 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 2920 < 5 < 5 14 < 508/12/03 TB 19580 < 5 5 < 5 5 < 15 57 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 5640 < 5 < 5 J 2 < 509/19/03 TB 19833 < 5 5 < 5 < 5 123 69 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 11000 < 5 < 5 < 2 < 511/07/03 TB 19954 < 5 < 5 < 5 < 5 J 25 7 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 3610 < 5 < 5 < 2 < 512/12/03 TB 20168 < 5 6 < 5 < 5 J 33 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 4470 < 5 < 5 < 2 < 5

02/06/04 TB 20291 < 5 7 < 5 < 5 < 15 41 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 1700 < 5 < 5 J 2 < 504/08/04 TB 20652 < 5 8 < 5 < 5 < 15 258 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 2220 < 5 < 5 J 2 < 505/20/04 TB 20758 < 5 17 < 5 < 5 < 15 397 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 6050 < 5 < 5 J 2 < 506/29/04 TB 20824 < 5 15 < 5 6 < 15 1120 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 9370 < 5 < 5 39 < 507/20/04 TB 20859 < 10 24 < 10 < 10 < 30 4790 < 10 < 10 < 10 < 10 < 40 < 8 < 10 < 10 16300 < 10 < 10 32 < 1009/08/04 TB 21139 11 19 < 10 10 103 2030 < 10 < 10 < 10 < 10 < 40 < 8 < 10 < 10 16100 < 10 < 10 J 11 < 10

02/25/05 TB 22195 < 20 22 < 20 < 20 < 60 514 < 20 < 20 < 20 < 20 < 80 < 16 < 20 < 20 3160 < 20 < 20 J 19 < 2005/19/05 TB 22612 < 20 < 20 < 20 < 20 < 60 885 < 20 < 20 < 20 < 20 < 80 < 16 < 20 < 20 6320 < 20 < 20 J 29 < 20

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 88 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

PS-029JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: Easement South

06/05/01 TB 14599 < 1000 780 < 500 540 1800 D 51000 < 500 < 500 < 500 < 500 < 5000 < 500 < 500 < 500 120000 < 500 1300 1100 < 50007/02/01 TB 14686 < 2000 < 1000 < 1000 < 1000 8300 26000 < 1000 < 1000 < 1000 < 1000 < 10000 < 1000 < 1000 < 1000 110000 < 1000 < 1000 < 1000 < 100012/18/01 TB 15994 J 1300 < 800 < 800 < 800 < 800 26000 < 800 < 800 < 800 < 800 < 8000 < 800 < 800 < 800 110000 < 800 < 800 < 800 < 800

01/04/02 TB 16103 < 2000 < 1000 < 1000 < 1000 28000 D 89000 < 1000 < 1000 < 1000 < 1000 J 4600 < 1000 < 1000 < 1000 D 450000 < 1000 D 960 J 770 < 100002/01/02 TB 16291 J 670 < 1000 < 1000 < 1000 29000 D 130000 < 1000 < 1000 < 1000 < 1000 J 6000 < 1000 < 1000 < 1000 D 460000 < 1000 1900 < 1000 < 100003/29/02 TB 16763 < 5000 < 2500 < 2500 < 2500 < 2500 81000 < 2500 < 2500 < 2500 < 2500 < 25000 < 2500 < 2500 < 2500 210000 < 2500 J 910 < 2500 J 50005/07/02 TB 16940 < 5000 < 2500 < 2500 < 2500 8400 72000 < 2500 < 2500 < 2500 < 2500 < 25000 < 2500 < 2500 < 2500 270000 < 2500 < 2500 < 2500 < 250007/08/02 TB 17404 < 1000 < 500 < 500 < 500 < 500 17000 < 500 < 500 < 500 < 500 < 5000 < 500 < 500 < 500 230000 < 500 J 190 < 500 < 50008/10/02 TB 17674 < 1250 < 1250 < 1250 < 1250 < 1250 54000 < 1250 < 1250 < 1250 < 1250 < 12500 < 1250 < 1250 < 1250 120000 < 1250 J 490 < 1250 < 125009/20/02 TB 17972 J 24 J 29 < 50 95 < 50 1000 < 50 J 37 < 50 J 13 < 500 < 50 < 50 < 50 D 200000 < 50 < 50 J 15 J 20

10/18/02 TB 18083 < 2000 < 1000 < 1000 < 1000 3600 37400 < 1000 < 1000 < 1000 < 1000 J 600 < 1000 < 1000 < 1000 141000 < 1000 J 400 < 1000 < 100011/19/02 TB 18209 < 2000 < 1000 < 1000 < 1000 2700 40400 < 1000 < 1000 < 1000 < 1000 < 10000 < 1000 < 1000 < 1000 170000 < 1000 J 380 < 1000 < 1000

01/27/03 TB 18530 < 2000 < 1000 < 1000 < 1000 5000 D 64000 < 1000 < 1000 < 1000 < 1000 < 10000 < 1000 < 1000 < 1000 180000 < 1000 J 710 < 1000 < 100004/15/03 TB 19121 < 2500 < 2500 < 2500 < 2500 < 7500 71300 < 2500 < 2500 < 2500 < 2500 < 10000 < 2000 < 2500 < 2500 164000 < 2500 < 2500 < 1000 < 250005/06/03 TB 19155 < 2000 < 2000 < 2000 < 2000 < 6000 57600 < 2000 < 2000 < 2000 < 2000 < 8000 < 1600 < 2000 < 2000 169000 < 2000 < 2000 < 800 < 200006/17/03 TB 19397 < 800 < 800 < 800 < 800 < 2400 25900 < 800 < 800 < 800 < 800 < 3200 < 640 < 800 < 800 55700 < 800 < 800 J 480 < 80007/08/03 TB 19472 < 400 < 400 < 400 < 400 < 1200 13400 < 400 < 400 < 400 < 400 < 1600 < 320 < 400 < 400 21000 < 400 < 400 J 320 < 40008/12/03 TB 19581 < 400 < 400 < 400 < 400 < 1200 14200 < 400 < 400 < 400 < 400 < 1600 < 320 < 400 < 400 155000 < 400 < 400 < 160 < 40009/19/03 TB 19834 < 250 < 250 < 250 < 250 J 1150 10500 < 250 < 250 < 250 < 250 < 1000 < 200 < 250 < 250 206000 < 250 < 250 < 100 < 25011/07/03 TB 19955 3840 < 1600 < 1600 < 1600 < 4800 39700 < 1600 < 1600 < 1600 < 1600 < 6400 < 1280 < 1600 < 1600 176000 < 1600 < 1600 < 640 < 160012/12/03 TB 20169 < 1600 < 1600 < 1600 < 1600 J 11200 86700 < 1600 < 1600 < 1600 < 1600 < 6400 < 1280 < 1600 < 1600 154000 < 1600 < 1600 J 640 < 1600

02/06/04 TB 20292 < 1600 2410 < 1600 < 1600 19300 312000 < 1600 < 1600 < 1600 < 1600 < 6400 < 1280 < 1600 < 1600 223000 < 1600 5620 J 2160 J 77404/08/04 TB 20653 < 1600 < 1600 < 1600 < 1600 J 6720 143000 < 1600 < 1600 < 1600 < 1600 < 6400 < 1280 < 1600 < 1600 287000 < 1600 1920 J 640 < 160005/20/04 TB 20759 < 4000 < 4000 < 4000 < 4000 < 12000 123000 < 4000 < 4000 < 4000 < 4000 < 16000 < 3200 < 4000 < 4000 313000 < 4000 < 4000 < 1600 < 400006/29/04 TB 20825 4300 < 2500 < 2500 < 2500 < 7500 97400 < 2500 < 2500 < 2500 < 2500 < 10000 < 2000 < 2500 < 2500 209000 < 2500 < 2500 < 1000 < 250007/20/04 TB 20860 < 4000 < 4000 < 4000 < 4000 < 12000 125000 < 4000 < 4000 < 4000 < 4000 < 16000 < 3200 < 4000 < 4000 326000 < 4000 < 4000 < 1600 < 400009/08/04 TB 21140 < 2500 < 2500 < 2500 < 2500 < 7500 84000 < 2500 < 2500 < 2500 < 2500 < 10000 < 2000 < 2500 < 2500 229000 < 2500 < 2500 < 1000 < 2500

02/25/05 TB 22196 < 2500 < 2500 < 2500 < 2500 < 7500 85600 < 2500 < 2500 < 2500 < 2500 < 10000 < 2000 < 2500 < 2500 194000 < 2500 < 2500 < 1000 < 250005/19/05 TB 22613 < 2500 < 2500 < 2500 < 2500 < 7500 88700 < 2500 < 2500 < 2500 < 2500 < 10000 < 2000 < 2500 < 2500 196000 < 2500 < 2500 < 1000 < 2500

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 89 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

PW-002JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: Easement South

01/19/97 TB 01018 < 10000 < 10000 < 10000 < 20000 400000 < 10000 < 10000 < 10000 < 20000 < 10000 2.4E+07 < 10000 13000 28000 < 1000001/28/97 TB 01076 2000 7000 < 25000 < 25000 < 50000 470000 < 25000 < 25000 < 25000 < 50000 < 25000 < 250000 < 25000 19000 48000 < 2500002/16/97 TB 01709 < 12000 < 12000 < 12000 < 25000 380000 < 12000 < 12000 < 12000 < 25000 < 12000 < 120000 < 12000 13000 34000 < 1200003/16/97 TB 01861 < 12000 < 12000 < 12000 < 25000 200000 < 12000 < 12000 < 12000 < 25000 < 12000 < 120000 < 12000 J 7000 J 16000 < 1200004/09/97 TB 02001 < 12000 < 12000 < 12000 44000 420000 < 12000 J 2500 J 4500 < 25000 < 12000 E 910000 < 12000 18000 40000 J 220005/07/97 TB 02115 < 25000 < 25000 < 25000 < 50000 470000 < 25000 J 9800 J 9000 < 50000 < 25000 < 250000 < 25000 65000 < 50000 J 1600008/12/97 TB 02555 J 3600 < 5000 < 5000 26000 180000 < 5000 < 5000 < 5000 < 10000 < 5000 < 50000 < 5000 10000 11000 < 500011/15/97 TB 03302 < 5000 < 5000 < 5000 < 20000 120000 < 5000 < 5000 < 10000 < 5000 < 10000 < 5000 < 5000 < 10000 28000 < 5000 J 5600 J 6700 < 5000

02/15/98 TB 03784 < 2500 < 2500 < 2500 < 5000 88000 < 2500 < 2500 < 2500 < 5000 < 2500 < 25000 < 2500 3800 J 3800 < 250004/13/98 TB 04286 < 2500 < 2500 < 2500 < 2500 J 3800 61000 < 2500 < 2500 < 2500 < 5000 < 2500 < 25000 < 2500 2800 J 2500 < 2500

06/04/98 TB 04706 770 < 500 990 < 2000 21000 < 500 < 500 J 260 < 500 < 1000 < 1000 < 500 < 1000 12000 < 500 1800 J 1400 < 50007/15/98 TB 05090 1310 160 < 50 340 < 200 E 3300 < 50 < 50 120 < 50 < 100 < 100 < 50 J 21 3000 < 50 860 390 480

08/03/98 TB 05303 J 40 J 60 < 100 120 < 400 1800 < 100 < 100 < 200 < 100 < 200 < 200 < 100 < 200 1000 < 100 J 120 J 160 J 80

11/03/98 TB 06352 J 110 180 < 50 380 < 200 1900 < 50 < 50 J 37 < 50 < 100 < 100 < 50 < 100 1800 < 50 730 220 J 160

12/01/98 TB 06814 110 97 < 5 D 220 < 20 D 580 6 12 20 < 5 < 10 < 10 < 5 J 8 1100 8 D 230 56 190

02/10/99 TB 07461 < 500 67 < 25 120 < 100 330 < 25 J 7 J 24 < 25 < 50 < 50 < 25 < 50 1000 J 8 420 J 53 J 14405/17/99 TB 08312 < 100 41 < 5 80 J 5 D 910 J 2 J 5 35 < 5 < 10 < 10 < 5 J 4 780 J 4 D 290 30 13008/20/99 TB 09385 < 50 70 < 25 80 < 25 900 < 25 < 25 < 25 < 25 < 250 < 25 < 25 < 25 1800 < 25 55 80 J 8010/18/99 TB 10088 140 65 < 25 50 < 25 910 < 25 < 25 J 8 < 25 < 250 < 25 < 25 J 9 2700 < 25 120 35 12011/03/99 TB 10309 90 60 < 25 45 < 25 840 < 25 < 25 < 25 < 25 < 250 < 25 < 25 < 25 2090 < 25 110 50 J 6312/21/99 TB 10792 400 320 < 25 200 45 D 2200 < 25 < 25 49 < 25 < 250 < 25 < 25 35 D 12800 < 25 830 1270 640

05/22/00 TB 11820 < 20 70 < 10 39 < 10 380 < 10 < 10 < 10 < 10 < 100 < 10 < 10 < 10 1100 < 10 200 58 26810/18/00 TB 12835 140 53 < 10 24 < 10 170 < 10 < 10 < 10 < 10 < 100 < 10 < 10 < 10 < 200 < 10 J 10 160 912

02/23/01 TB 13889 < 10 62 < 5 25 < 5 100 < 5 5 77 < 5 < 50 < 5 < 5 < 5 250 < 5 7 71 21405/09/01 TB 14383 46 40 < 5 15 < 5 62 < 5 J 3 < 5 < 5 < 50 < 5 < 5 < 5 550 < 5 5 91 4808/24/01 TB 15100 < 10 26 < 5 15 < 5 12 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 1200 < 5 12 44 9011/05/01 TB 15526 J 4 37 < 5 15 < 5 35 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 750 < 5 33 170 15

02/02/02 TB 16300 13 150 J 2 64 < 5 D 460 8 11 7 J 3 < 50 < 5 < 5 J 5 540 J 4 56 D 230 21605/04/02 TB 16905 < 10 44 < 5 16 < 5 25 < 5 J 3 < 5 < 5 < 50 < 5 < 5 < 5 980 < 5 < 5 82 6306/18/02 TB 17342 < 10 21 < 5 14 < 5 J 5 < 5 J 2 < 5 < 5 < 50 < 5 < 5 < 5 390 < 5 < 5 43 J 6

08/30/02 TB 17837 J 2 41 < 5 15 < 5 100 J 1 J 3 < 5 < 5 < 50 < 5 < 5 J 2 2000 < 5 J 3 61 J 1

01/30/03 TB 18546 < 10 17 < 5 8 < 5 J 2 < 5 J 1 < 5 < 5 < 50 < 5 < 5 < 5 1000 < 5 < 5 26 < 505/07/03 TB 19178 < 5 53 < 5 13 < 15 81 < 5 < 5 8 < 5 < 20 < 4 < 5 < 5 1480 < 5 62 82 85

08/07/03 TB 19545 < 5 48 < 5 13 < 15 113 < 5 < 5 23 < 5 < 20 < 4 < 5 < 5 1840 < 5 98 62 18211/07/03 TB 19956 10 67 < 5 14 < 15 211 < 5 < 5 52 < 5 < 20 < 4 < 5 < 5 1180 < 5 159 95 30012/15/03 TB 20193 < 5 49 < 5 13 < 15 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 890 < 5 < 5 45 < 5

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 90 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

PW-002JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: Easement South

02/06/04 TB 20293 < 5 82 < 5 12 < 15 199 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 754 < 5 13 231 7109/07/04 TB 21107 < 5 12 < 5 8 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 990 < 5 < 5 29 < 5

02/18/05 TB 22116 < 5 23 < 5 10 < 15 9 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 1340 < 5 < 5 46 J 305/17/05 TB 22569 < 5 11 < 5 7 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 2560 < 5 < 5 20 < 5

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 91 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

PW-004JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: Easement South

10/29/96 TB 00635 140 < 250 < 250 < 250 < 500 5500 < 250 < 250 < 250 < 500 < 250 45000 < 250 430 < 500 < 250

02/16/97 TB 01711 < 500 < 500 < 500 < 1000 6200 < 500 < 500 < 500 < 1000 < 500 12000 < 500 J 380 < 1000 < 50003/16/97 TB 01862 < 250 < 250 < 250 < 500 6000 < 250 < 250 < 250 < 500 < 250 E 25000 < 250 420 J 440 < 25004/09/97 TB 02003 < 250 < 250 < 250 < 500 4900 < 250 < 250 J 50 < 500 < 250 E 16000 < 250 300 < 500 < 25006/07/97 TB 02257 J 27 < 50 < 50 < 100 1400 < 50 < 50 < 50 < 100 < 50 8500 < 50 78 160 < 5009/05/97 TB 02762 < 500 < 500 < 500 < 1000 6800 < 500 < 500 < 500 < 1000 < 500 J 2100 < 500 1300 < 1000 < 50012/14/97 TB 03478 J 98 < 100 J 50 < 400 2700 < 100 < 100 < 200 < 100 < 200 < 200 < 100 < 200 < 100 430 J 260 J 54

03/10/98 TB 03963 J 3 < 5 < 5 < 10 100 < 5 < 5 < 5 < 10 < 5 E 1200 < 5 14 10 J 205/11/98 TB 04534 < 50 J 48 < 50 59 B 180 1100 < 50 < 50 < 50 < 100 < 50 4400 < 50 320 < 100 68

06/04/98 TB 04712 J 14 < 25 J 11 < 100 370 < 25 < 25 < 50 < 25 < 50 < 50 < 25 < 50 5900 < 25 J 29 79 < 2509/17/98 TB 05855 J 6 15 < 5 14 < 20 260 < 5 < 5 < 10 < 5 < 10 < 10 < 5 < 10 4400 < 5 13 67 J 8

10/16/98 TB 06158 < 100 < 5 < 5 < 5 < 20 57 < 5 < 5 < 10 < 5 < 10 < 10 < 5 < 10 670 < 5 < 10 17 < 511/03/98 TB 06363 < 100 J 4 < 5 J 4 < 20 J 2 < 5 < 5 < 10 < 5 < 10 < 10 < 5 < 10 300 < 5 < 10 J 12 < 512/05/98 TB 06874 < 100 J 4 < 5 J 3 < 20 70 < 5 < 5 < 10 < 5 < 10 < 10 < 5 < 10 2600 < 5 < 10 J 12 < 5

02/10/99 TB 07462 < 100 < 5 < 5 < 5 < 20 < 5 < 5 < 5 < 10 < 5 < 10 < 10 < 5 < 10 230 < 5 < 10 J 4 < 505/17/99 TB 08313 < 100 J 2 < 5 < 5 < 20 6 < 5 < 5 < 10 < 5 < 10 < 10 < 5 < 10 1000 < 5 < 10 J 3 < 508/20/99 TB 09387 < 10 7 < 5 5 < 5 165 < 5 < 5 15 < 5 < 50 < 5 < 5 < 5 E 2400 < 5 31 21 4111/03/99 TB 10310 < 10 < 5 < 5 < 5 < 5 35 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 1900 < 5 < 5 7 < 5

02/09/00 TB 11151 < 10 8 < 5 < 5 < 5 230 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 370 < 5 < 5 15 J 1205/21/00 TB 11815 < 10 < 5 < 5 < 5 < 5 J 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 1000 < 5 < 5 J 2 < 508/05/00 TB 12334 < 10 < 5 < 5 < 5 < 5 7 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 450 < 5 < 5 J 2 < 510/18/00 TB 12837 < 10 < 5 < 5 < 5 < 5 28 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 2100 < 5 < 5 5 < 5

02/23/01 TB 13863 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 760 < 5 < 5 < 5 < 505/09/01 TB 14384 260 < 5 < 5 < 5 14 53 < 5 < 5 < 5 < 5 J 15 < 5 < 5 < 5 880 < 5 < 5 < 5 < 508/24/01 TB 15101 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 1400 < 5 < 5 < 5 < 511/06/01 TB 15546 < 10 < 5 < 5 < 5 < 5 6 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 2400 < 5 < 5 < 5 < 5

02/02/02 TB 16301 < 10 5 < 5 J 3 < 5 15 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 2200 < 5 J 4 J 5 < 505/04/02 TB 16906 < 10 J 3 < 5 < 5 < 5 13 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 D 2100 < 5 < 5 J 4 < 508/30/02 TB 17838 J 1 J 2 < 5 < 5 < 5 18 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 D 3400 < 5 < 5 J 3 < 5

01/30/03 TB 18547 J 7 < 5 < 5 < 5 < 5 J 2 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 2600 < 5 < 5 < 5 < 505/06/03 TB 19161 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 2660 < 5 < 5 < 2 < 508/06/03 TB 19539 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 2430 < 5 < 5 < 2 < 511/07/03 TB 19943 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 2420 < 5 < 5 < 2 < 5

02/06/04 TB 20294 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 2260 < 5 < 5 < 2 < 509/07/04 TB 21109 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 3610 < 5 < 5 < 2 < 5

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 92 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

PW-004JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: Easement South

10/19/04 TB 21352 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 3130 < 5 < 5 < 2 < 511/16/04 TB 21407 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 2530 < 5 < 5 < 2 < 512/03/04 TB 21522 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 3140 < 5 < 5 < 2 < 5

01/12/05 TB 21775 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 3260 < 5 < 5 < 2 < 502/22/05 TB 22145 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 1420 < 5 < 5 < 2 < 505/17/05 TB 22570 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 1690 < 5 < 5 < 2 < 5

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 93 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

PW-005JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: Easement South

10/29/96 TB 00636 69 < 1000 < 1000 < 1000 < 2000 24000 < 1000 < 1000 < 1000 < 2000 < 1000 28000 < 1000 < 1000 < 2000 < 1000

02/16/97 TB 01712 < 2500 < 2500 < 2500 < 5000 58000 < 2500 < 2500 < 2500 < 5000 < 2500 28000 < 2500 J 900 < 5000 < 250003/16/97 TB 01863 5400 < 1200 5400 < 2500 23000 < 1200 J 1200 < 1200 < 2500 < 1200 < 12000 < 1200 3000 28000 600004/09/97 TB 02004 < 2500 < 2500 < 2500 < 5000 36000 < 2500 < 2500 J 1000 < 5000 < 2500 < 25000 < 2500 < 2500 < 5000 < 250006/07/97 TB 02256 < 1000 < 1000 < 1000 < 2000 18000 < 1000 < 1000 < 1000 < 2000 < 1000 J 640 < 1000 < 1000 < 2000 < 100009/05/97 TB 02761 < 5000 < 5000 < 5000 < 10000 120000 < 5000 < 5000 < 5000 < 10000 < 5000 190000 < 5000 J 2300 < 10000 < 500012/14/97 TB 03479 < 1000 < 1000 < 1000 < 4000 31000 < 1000 < 1000 < 2000 < 1000 < 2000 < 2000 < 1000 < 2000 < 1000 J 1100 < 3000 < 1000

02/15/98 TB 03796 < 500 < 500 < 500 < 1000 9200 < 500 < 500 < 500 < 1000 < 500 11000 < 500 J 360 < 1000 < 50003/13/98 TB 03970 < 250 < 250 < 250 J 350 7600 < 250 < 250 < 250 < 500 < 250 < 2500 < 250 300 < 500 < 250

05/11/98 TB 04535 < 250 < 250 < 250 < 250 B 1400 7700 < 250 < 250 < 250 < 500 < 250 21000 < 250 440 < 500 < 25006/04/98 TB 04713 < 250 < 250 < 250 J 120 2400 < 250 < 250 < 500 < 250 < 500 < 500 < 250 < 500 23000 < 250 J 110 < 750 < 25008/03/98 TB 05304 < 200 < 100 < 100 < 100 < 400 1900 < 100 < 100 < 200 < 100 < 200 < 200 < 100 < 200 11000 < 100 J 40 J 20 < 10011/03/98 TB 06353 < 100 < 5 < 5 < 5 < 20 < 5 < 5 < 5 < 10 < 5 < 10 < 10 < 5 < 10 1500 < 5 < 10 < 15 < 512/01/98 TB 06815 < 100 < 5 < 5 < 5 < 20 < 5 < 5 < 5 < 10 < 5 < 10 < 10 < 5 < 10 820 < 5 < 10 < 15 < 5

02/10/99 TB 07463 < 100 < 5 < 5 J 3 < 20 34 < 5 < 5 < 10 < 5 < 10 < 10 < 5 < 10 10000 < 5 J 2 < 15 < 505/17/99 TB 08314 < 100 < 5 < 5 < 5 < 20 16 < 5 < 5 < 10 < 5 < 10 < 10 < 5 < 10 D 10000 < 5 J 1 < 15 < 508/23/99 TB 09411 < 10 < 5 < 5 < 5 < 5 9 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 D 5500 < 5 J 2 < 5 < 511/09/99 TB 10420 < 10 < 5 < 5 < 5 < 5 J 4 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 6400 < 5 < 5 < 5 < 5

05/21/00 TB 11816 < 10 < 5 < 5 < 5 < 5 J 4 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 D 3600 < 5 < 5 < 5 < 510/18/00 TB 12838 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 D 2600 < 5 < 5 < 5 < 5

02/26/01 TB 13915 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 D 3900 < 5 < 5 < 5 < 505/10/01 TB 14407 < 10 < 5 < 5 < 5 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 D 6400 < 5 < 5 < 5 < 508/27/01 TB 15149 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 D 3300 < 5 < 5 < 5 < 511/06/01 TB 15547 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 D 2900 < 5 < 5 < 5 < 5

02/28/02 TB 16599 15 < 5 < 5 < 5 < 5 J 1 < 5 < 5 < 5 < 5 < 50 J 3 < 5 < 5 D 7500 < 5 < 5 < 5 < 505/16/02 TB 17027 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 J 3 < 5 < 5 D 4100 < 5 < 5 < 5 < 509/14/02 TB 17916 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 J 2 < 5 < 5 D 3300 < 5 < 5 < 5 < 5

02/18/03 TB 18728 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 J 2 < 5 < 5 D 2800 < 5 < 5 < 5 < 508/07/03 TB 19546 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 2360 < 5 < 5 < 2 < 5

02/12/04 TB 20314 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 690 < 5 < 5 < 2 < 509/08/04 TB 21141 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 558 < 5 < 5 < 2 < 510/19/04 TB 21353 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 511/16/04 TB 21408 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 706 < 5 < 5 < 2 < 512/03/04 TB 21523 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 926 < 5 < 5 < 2 < 5

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 94 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

PW-005JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: Easement South

01/12/05 TB 21776 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 906 < 5 < 5 < 2 < 502/25/05 TB 22197 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 504/12/05 TB 22341 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 997 < 5 < 5 < 2 < 5

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 95 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

PW-006JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: Easement South

11/12/96 TB 00704 1300 24000 < 12000 < 12000 < 25000 170000 < 12000 < 12000 < 12000 < 25000 < 12000 < 120000 < 12000 < 12000 150000 < 1200011/12/96 TB 00677 1100 < 25000 < 25000 < 25000 < 50000 260000 < 25000 < 25000 35000 < 50000 < 25000 < 250000 < 25000 < 25000 < 50000 < 25000

01/28/97 TB 01077 720 9200 < 2500 9800 < 5000 44000 < 2500 < 2500 < 2500 < 5000 < 2500 43000 < 2500 3500 52000 < 250002/16/97 TB 01713 8400 < 2500 8600 < 5000 46000 < 2500 < 2500 < 2500 < 5000 < 2500 61000 < 2500 5200 46000 < 250003/16/97 TB 01864 J 1000 < 1200 < 1200 < 2500 38000 < 1200 < 1200 < 1200 < 2500 < 1200 < 12000 < 1200 J 950 5600 J 45004/09/97 TB 02005 9200 < 2500 10000 < 5000 52000 < 2500 < 2500 < 2500 < 5000 < 2500 < 25000 < 2500 5600 48000 < 250005/07/97 TB 02116 5600 < 1000 < 1000 < 2000 30000 < 1000 < 1000 < 1000 < 2000 < 1000 < 10000 < 1000 3100 31000 < 100008/11/97 TB 02546 2000 < 500 2200 < 1000 7900 < 500 < 500 J 240 < 1000 < 500 14000 < 500 1500 5700 J 29011/15/97 TB 03307 570 < 100 570 < 400 2000 < 100 < 100 < 200 < 100 < 200 230 < 100 J 110 < 250 < 100 300 2000 J 80

02/15/98 TB 03797 170 < 25 200 < 50 430 < 25 < 25 < 25 < 50 < 25 1100 < 25 43 620 J 10

05/11/98 TB 04536 < 10 60 < 10 92 B 28 47 < 10 < 10 < 10 < 20 < 10 J 7 < 10 < 10 200 < 1008/04/98 TB 05322 J 4 100 < 10 100 < 40 280 J 6 J 2 J 2 < 10 < 20 < 20 < 10 J 14 140 J 2 32 410 J 4

01/11/99 TB 07190 < 100 27 < 5 27 < 20 17 < 5 < 5 < 10 < 5 < 10 < 10 < 5 J 4 J 70 < 5 < 10 140 < 502/12/99 TB 07472 < 100 13 < 5 14 < 20 7 < 5 < 5 < 10 < 5 < 10 < 10 < 5 < 10 < 100 < 5 J 1 72 < 505/25/99 TB 08469 < 100 17 < 5 15 < 20 31 J 1 < 5 < 10 < 5 < 10 < 10 < 5 J 2 < 100 < 5 < 10 85 < 508/22/99 TB 09405 < 10 11 < 5 13 < 5 J 3 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 82 < 511/09/99 TB 10421 94 10 < 5 12 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 67 < 5

05/21/00 TB 11817 220 10 < 5 12 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 76 < 510/18/00 TB 12839 < 10 160 < 5 150 < 5 D 600 9 < 5 < 5 < 5 < 50 < 5 < 5 33 1100 < 5 8 D 720 J 1

01/06/01 TB 13528 < 10 10 < 5 12 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 77 < 502/22/01 TB 13860 < 10 17 < 5 18 < 5 49 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 110 < 505/09/01 TB 14385 110 15 < 5 11 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 35 < 508/27/01 TB 15150 < 10 9 < 5 12 < 5 9 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 44 < 511/06/01 TB 15548 18 9 < 5 7 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 23 < 5

02/25/02 TB 16550 < 10 8 < 5 8 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 53 < 505/12/02 TB 16999 < 10 11 < 5 11 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 52 < 508/30/02 TB 17839 < 10 17 < 5 9 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 J 2 J 17 < 5 < 5 9 < 5

02/04/03 TB 18581 < 10 7 < 5 6 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 13 < 508/07/03 TB 19547 < 5 8 < 5 9 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 29 < 5

02/10/04 TB 20308 < 5 6 < 5 6 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 10 < 509/07/04 TB 21110 < 5 6 < 5 6 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 510/19/04 TB 21354 < 5 9 < 5 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 21 < 511/22/04 TB 21505 < 5 8 < 5 7 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 43 < 512/03/04 TB 21524 < 5 11 < 5 8 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 35 < 5

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 96 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

PW-006JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: Easement South

01/12/05 TB 21777 < 5 13 < 5 11 < 15 8 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 45 < 502/18/05 TB 22118 < 5 11 < 5 8 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 41 < 505/17/05 TB 22571 < 5 11 < 5 9 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 97 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

PW-008JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: Easement South

11/16/96 TB 00712 < 1200 < 1200 16000 < 2500 3800 24000 < 1200 < 1200 < 2500 < 1200 52000 < 1200 2000 < 2500 < 120011/20/96 TB 00753 4400 < 120 < 120 < 120 < 250 3700 < 120 140 < 120 < 250 < 120 < 1200 < 120 1500 < 250 880

02/16/97 TB 01714 < 250 < 250 < 250 < 500 4600 < 250 J 100 < 250 < 500 < 250 < 2500 < 250 1400 < 500 66003/16/97 TB 01868 < 250 < 250 < 250 < 500 6300 < 250 J 130 < 250 < 500 < 250 < 2500 < 250 1800 < 500 85004/09/97 TB 02007 < 500 < 500 < 500 < 1000 8100 < 500 J 200 J 180 < 1000 < 500 < 5000 < 500 2700 < 1000 140010/06/97 TB 02964 < 250 < 250 < 250 < 500 4100 < 250 J 140 < 250 < 500 < 250 < 2500 < 250 1400 < 500 990

01/18/98 TB 03671 < 120 < 120 J 80 < 500 3400 < 120 < 120 J 80 < 120 < 250 < 250 < 120 < 250 < 120 970 J 150 85004/13/98 TB 04295 760 < 100 < 100 < 100 J 120 1900 < 100 < 100 < 100 < 200 < 100 7200 < 100 750 J 140 73007/14/98 TB 05076 E 18000 J 30 < 50 130 < 200 1800 < 50 J 29 J 23 < 50 < 100 < 100 < 50 < 100 10000 < 50 410 J 84 640

09/16/98 TB 05840 7400 < 50 < 50 J 45 < 200 1200 < 50 < 50 J 30 < 50 < 100 < 100 < 50 < 100 3000 < 50 440 J 25 600

10/12/98 TB 06143 1800 < 50 < 50 < 50 < 200 170 < 50 < 50 < 100 < 50 < 100 < 100 < 50 < 100 < 1000 < 50 140 < 150 J 100

08/23/99 TB 09412 13000 < 50 < 50 < 50 < 50 480 < 50 < 50 < 50 < 50 < 500 < 50 < 50 < 50 < 1000 < 50 240 < 50 520

08/24/99 TB 09418 5.9E+07

10/18/99 TB 10089 3900 < 20 < 20 < 20 < 20 470 < 20 < 20 < 20 < 20 < 200 < 20 < 20 < 20 < 400 < 20 72 < 20 46011/04/99 TB 10352 4100 < 13 < 13 < 13 < 13 500 < 13 < 13 < 13 < 13 < 125 < 13 < 13 < 13 < 250 < 13 55 < 13 46012/21/99 TB 10793 3300 < 13 < 13 < 13 < 13 570 < 13 < 13 < 13 < 13 < 125 < 13 < 13 < 13 340 < 13 61 < 13 460

04/08/00 TB 11534 3000 < 5 < 5 6 < 5 D 450 < 5 < 5 22 < 5 < 50 < 5 < 5 < 5 < 100 < 5 180 < 5 50305/20/00 TB 11810 4900 < 20 < 20 < 20 < 20 530 < 20 < 20 < 20 < 20 < 200 < 20 < 20 < 20 < 400 < 20 110 < 20 38806/06/00 TB 11907 5300 < 20 < 20 < 20 < 20 590 < 20 < 20 < 20 < 20 < 200 < 20 < 20 < 20 < 400 < 20 96 < 20 43007/06/00 TB 12105 1900 < 20 < 20 < 20 < 20 410 < 20 < 20 < 20 < 20 < 200 < 20 < 20 < 20 < 400 < 20 63 < 20 21210/10/00 TB 12767 D 14000 < 5 < 5 < 5 < 5 D 1800 < 5 < 5 8 < 5 < 50 < 5 < 5 < 5 < 100 < 5 74 < 5 49711/03/00 TB 13111 4000 < 20 < 20 < 20 < 20 490 < 20 < 20 < 20 < 20 < 200 < 20 < 20 < 20 < 400 < 20 93 < 20 52011/03/00 TB 13098 2000

02/23/01 TB 13864 1400 < 20 < 20 < 20 < 20 540 < 20 < 20 < 20 < 20 < 200 < 20 < 20 < 20 < 400 < 20 150 < 20 45204/06/01 TB 14154 980 < 20 < 20 < 20 43 500 < 20 < 20 < 20 < 20 < 200 < 20 < 20 < 20 570 < 20 150 < 20 40405/09/01 TB 14386 1700 < 20 < 20 J 17 < 20 510 < 20 < 20 < 20 < 20 < 200 < 20 < 20 < 20 < 400 < 20 170 < 20 44808/25/01 TB 15115 D 9000 < 20 < 20 < 20 < 20 D 1200 < 20 < 20 36 < 20 < 200 < 20 < 20 < 20 < 400 < 20 370 < 20 60011/08/01 TB 15574 D 1700 < 20 < 20 < 20 < 20 460 < 20 < 20 J 16 < 20 < 200 < 20 < 20 < 20 < 400 < 20 87 < 20 164

02/27/02 TB 16583 D 2300 < 10 < 10 < 10 < 10 420 < 10 < 10 12 < 10 < 100 < 10 < 10 < 10 < 200 < 10 42 < 10 178

05/12/02 TB 17000 D 6900 < 20 < 20 < 20 < 20 600 < 20 < 20 30 < 20 < 200 < 20 < 20 < 20 < 400 < 20 110 < 20 336

07/08/02 TB 17405 D 6600 < 20 < 20 < 20 < 20 680 < 20 < 20 35 < 20 < 200 < 20 < 20 < 20 < 400 < 20 99 < 20 336

07/08/02 TB 17395 3100

09/12/02 TB 17902 D 2300 < 10 < 10 < 10 < 10 D 780 < 10 < 10 28 < 10 < 100 < 10 < 10 < 10 J 140 < 10 100 < 10 368

02/12/03 TB 18679 D 4000 < 25 < 25 < 25 < 25 640 < 25 < 25 J 8 < 25 < 250 < 25 < 25 < 25 J 210 < 25 77 < 25 24505/07/03 TB 19179 4460 < 20 < 20 < 20 < 60 668 < 20 < 20 20 < 20 < 80 < 16 < 20 < 20 < 200 < 20 116 < 8 272

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 98 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

PW-008JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: Easement South

08/07/03 TB 19548 1860 < 5 < 5 < 5 < 15 179 < 5 < 5 5 < 5 < 20 < 4 < 5 < 5 109 < 5 18 < 2 9411/07/03 TB 19944 260 < 5 < 5 < 5 < 15 22 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 11

02/12/04 TB 20322 443 < 10 < 10 < 10 < 30 40 < 10 < 10 < 10 < 10 < 40 < 8 < 10 < 10 < 100 < 10 < 10 < 4 1709/08/04 TB 21142 223 < 5 < 5 < 5 < 15 9 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 J 210/19/04 TB 21355 117 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 511/16/04 TB 21409 801 < 5 < 5 < 5 < 15 14 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 1912/02/04 TB 21517 2870 < 20 < 20 < 20 < 60 246 < 20 < 20 < 20 < 20 < 80 < 16 < 20 < 20 < 200 < 20 < 20 < 8 113

01/12/05 TB 21768 2720 < 100 < 100 < 100 < 300 118 < 100 < 100 < 100 < 100 < 400 < 80 < 100 < 100 < 1000 < 100 < 100 < 40 < 10002/23/05 TB 22174 2530 < 50 < 50 < 50 < 150 124 < 50 < 50 < 50 < 50 < 200 < 40 < 50 < 50 < 500 < 50 < 50 < 20 J 24

06/14/05 TB 22656 1070 < 25 < 25 < 25 < 75 85 < 25 < 25 < 25 < 25 < 100 < 20 < 25 < 25 < 250 < 25 < 25 < 10 58

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 99 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

PW-011JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: Easement South

12/02/96 TB 00790 < 10 < 5 < 5 < 5 < 10 < 5 < 5 < 5 < 5 < 10 < 5 17000 < 5 < 5 < 10 < 5

09/07/04 TB 21113 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 161 < 5 < 5 < 2 < 510/19/04 TB 21356 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 511/16/04 TB 21410 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 178 < 5 < 5 < 2 < 512/03/04 TB 21525 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 168 < 5 < 5 < 2 < 5

01/12/05 TB 21778 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 502/25/05 TB 22198 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 504/12/05 TB 22343 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 647 < 5 < 5 < 2 < 5

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 100 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

PW-012JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: Easement South

12/03/96 TB 00791 53 < 5 < 5 < 5 < 10 110 13 8 < 5 < 10 < 5 5800 8 59 < 10 29

04/10/97 TB 02026 < 5 < 5 < 5 < 10 < 5 < 5 < 5 < 5 < 10 < 5 E 4700 < 5 < 5 < 10 < 506/30/97 TB 02411 < 5 < 5 < 5 < 10 < 5 < 5 < 5 < 5 < 10 < 5 E 3300 < 5 < 5 < 10 < 510/15/97 TB 03005 < 5 < 5 < 5 < 10 < 5 < 5 < 5 < 5 < 10 < 5 < 50 < 5 < 5 < 10 < 5

01/18/98 TB 03666 < 5 < 5 < 5 < 20 < 5 < 5 < 5 < 10 < 5 J 9 < 10 < 5 < 10 < 5 < 10 < 15 < 504/13/98 TB 04285 6 < 5 < 5 < 5 J 4 < 5 < 5 < 5 < 5 < 10 < 5 E 3900 < 5 < 5 < 10 < 507/13/98 TB 05035 < 10 < 5 < 5 < 5 < 20 < 5 < 5 < 5 < 10 < 5 < 10 < 10 < 5 < 10 E 6700 < 5 < 10 < 15 < 5

08/21/99 TB 09397 320 < 5 < 5 < 5 < 5 J 3 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 D 6700 < 5 J 4 < 5 < 5

02/26/01 TB 13916 47 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 D 3700 < 5 < 5 < 5 < 508/27/01 TB 15151 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 D 2600 < 5 < 5 < 5 < 5

02/25/02 TB 16553 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 J 3 < 5 < 5 D 5400 < 5 < 5 < 5 < 5

02/04/03 TB 18582 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 J 4 < 5 < 5 D 13000 < 5 < 5 < 5 < 508/07/03 TB 19549 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 J 6 < 5 < 5 13000 < 5 < 5 < 2 < 5

02/12/04 TB 20316 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 J 6 < 5 < 5 14600 < 5 < 5 < 2 < 509/07/04 TB 21114 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 J 7 < 5 < 5 56000 < 5 < 5 < 2 < 510/19/04 TB 21357 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 J 5 < 5 < 5 46300 < 5 < 5 < 2 < 511/09/04 TB 21385 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 J 8 < 5 < 5 101000 < 5 < 5 < 2 < 512/03/04 TB 21526 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 J 9 < 5 < 5 95100 < 5 < 5 < 2 < 5

01/12/05 TB 21779 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 10 < 5 < 5 46700 < 5 < 5 < 2 < 502/22/05 TB 22142 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 J 9 < 5 < 5 47600 < 5 < 5 < 2 < 505/17/05 TB 22573 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 J 9 < 5 < 5 81500 < 5 < 5 < 2 < 5

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 101 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

PW-013JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: Easement South

12/03/96 TB 00792 51 7 < 5 26 < 10 55 6 < 5 < 5 < 10 < 5 3300 < 5 30 38 16

02/25/02 TB 16551 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 5

02/04/03 TB 18583 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 5

02/12/04 TB 20317 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 509/07/04 TB 21115 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 510/19/04 TB 21358 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 511/09/04 TB 21386 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 512/03/04 TB 21527 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

01/12/05 TB 21780 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 502/22/05 TB 22143 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 506/09/05 TB 22646 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 102 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

PW-014JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: Easement South

12/03/96 TB 00793 340 6000 < 1000 5500 < 2000 30000 < 1000 < 1000 < 1000 < 2000 < 1000 < 10000 < 1000 3300 33000 < 1000

04/09/97 TB 02008 96 < 5 66 < 10 < 5 J 2 < 5 J 1 < 10 < 5 < 50 J 4 < 5 E 570 < 505/07/97 TB 02117 180 < 50 110 < 100 < 50 < 50 < 50 < 50 < 100 < 50 1100 < 50 < 50 790 < 5006/08/97 TB 02258 J 16 < 25 < 25 < 50 910 < 25 < 25 < 25 < 50 < 25 260 < 25 < 25 100 < 2506/30/97 TB 02412 40 < 10 29 < 20 < 10 < 10 < 10 < 10 < 20 < 10 < 100 < 10 < 10 210 < 1008/12/97 TB 02556 26 < 5 20 < 10 22 < 5 < 5 < 5 < 10 < 5 < 50 < 5 < 5 130 < 509/05/97 TB 02764 16 < 5 13 < 10 7 < 5 < 5 < 5 < 10 < 5 < 50 < 5 < 5 83 < 510/06/97 TB 02965 11 < 5 8 < 10 J 3 < 5 < 5 < 5 < 10 < 5 < 50 < 5 < 5 69 < 511/15/97 TB 03303 5 < 5 5 J 6 J 3 < 5 < 5 < 10 < 5 29 < 5 < 10 < 250 < 5 < 10 J 5 < 512/14/97 TB 03480 7 < 5 7 < 20 12 < 5 < 5 < 10 < 5 28 < 10 < 5 J 2 < 5 < 10 J 5 < 5

02/15/98 TB 03788 8 < 5 7 < 10 9 < 5 < 5 < 5 < 10 < 5 J 5 < 5 < 5 51 < 503/15/98 TB 03989 8 < 5 6 < 10 J 3 < 5 < 5 < 5 < 10 < 5 < 50 < 5 < 5 57 < 506/04/98 TB 04704 13 < 5 12 < 20 6 < 5 < 5 < 10 < 5 < 10 < 10 < 5 J 3 J 10 < 5 < 10 110 < 509/16/98 TB 05841 < 10 J 3 < 5 J 4 < 20 J 4 < 5 < 5 < 10 < 5 < 10 < 10 < 5 < 10 < 50 < 5 < 10 22 < 5

02/12/99 TB 07473 < 100 24 < 5 29 < 20 51 < 5 < 5 < 10 < 5 < 10 < 10 < 5 J 5 1200 < 5 < 10 200 < 505/25/99 TB 08470 < 100 35 < 5 35 < 20 48 J 2 < 5 < 10 < 5 < 10 < 10 < 5 10 < 100 < 5 < 10 D 190 < 508/22/99 TB 09406 < 10 26 < 5 31 < 5 18 J 2 J 2 < 5 < 5 < 50 < 5 < 5 5 < 100 < 5 < 5 160 < 511/10/99 TB 10422 11 < 5 < 5 < 5 < 5 < 5 < 5 J 3 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 J 5 < 5

05/21/00 TB 11818 < 10 J 3 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 20 < 510/18/00 TB 12840 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 22 < 5

02/22/01 TB 13861 < 10 6 < 5 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 42 < 505/09/01 TB 14387 63 J 4 < 5 J 3 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 J 4 < 508/27/01 TB 15152 < 10 J 4 < 5 J 4 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 20 < 511/06/01 TB 15549 31 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 8 < 5

02/25/02 TB 16552 < 10 J 4 < 5 J 4 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 29 < 505/12/02 TB 17001 J 7 J 4 < 5 J 4 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 17 < 508/30/02 TB 17840 < 10 J 5 < 5 J 4 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 J 1 J 14 < 5 < 5 22 < 5

02/04/03 TB 18584 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 9 < 5

02/10/04 TB 20309 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 509/07/04 TB 21116 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 10 < 510/19/04 TB 21359 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 12 < 511/09/04 TB 21387 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 14 < 512/03/04 TB 21528 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 J 7 < 5

01/12/05 TB 21781 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 76 < 5 < 5 < 2 < 5

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 103 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

PW-014JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: Easement South

02/18/05 TB 22119 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 J 5 < 506/09/05 TB 22647 < 5 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 J 7 < 5

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 104 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

PW-015JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: Easement South

12/06/96 TB 00813 < 5000 < 5000 < 5000 < 10000 110000 < 5000 < 5000 < 5000 < 10000 < 5000 < 50000 < 5000 11000 38000 < 5000

02/16/97 TB 01715 J 840 < 1000 < 1000 < 2000 14000 < 1000 < 1000 J 340 < 2000 < 1000 < 10000 < 1000 J 960 5100 < 100003/16/97 TB 01867 610 < 250 < 250 < 500 9800 < 250 < 250 < 250 < 500 < 250 J 1400 < 250 830 5800 J 12004/09/97 TB 02006 < 500 < 500 < 500 < 1000 6800 < 500 < 500 < 500 < 1000 < 500 < 5000 < 500 610 3400 < 50005/07/97 TB 02118 J 230 < 250 < 250 < 500 3400 < 250 < 250 < 250 < 500 < 250 < 2500 < 250 340 2000 < 25008/12/97 TB 02554 26 < 5 30 < 10 190 < 5 < 5 < 5 < 10 < 5 55 < 5 14 170 809/05/97 TB 02768 17 < 5 12 < 10 40 < 5 < 5 < 5 < 10 < 5 J 15 < 5 J 3 120 < 511/15/97 TB 03301 J 3 < 5 J 4 J 6 10 < 5 < 5 < 10 < 5 39 < 5 < 10 250 < 5 < 10 J 3 < 5

02/15/98 TB 03787 7 < 5 8 < 10 16 < 5 < 5 < 5 < 10 < 5 J 37 < 5 < 5 39 < 5

03/15/98 TB 03992 6 < 5 6 < 10 46 < 5 < 5 < 5 < 10 < 5 < 50 < 5 J 3 22 < 506/04/98 TB 04711 J 3 < 5 J 4 < 20 9 < 5 < 5 < 10 < 5 < 10 < 10 < 5 < 10 < 10 < 5 < 10 25 < 509/16/98 TB 05842 < 10 J 4 < 5 J 5 < 20 18 < 5 < 5 < 10 < 5 < 10 < 10 < 5 < 10 < 50 < 5 < 10 30 < 5

02/12/99 TB 07474 < 100 34 < 5 57 < 20 D 290 J 2 J 2 < 10 < 5 < 10 < 10 < 5 J 5 110 < 5 J 4 D 360 J 1

05/23/99 TB 08395 < 100 < 5 < 5 < 5 < 20 J 1 < 5 < 5 < 10 < 5 < 10 < 10 < 5 < 10 < 100 < 5 < 10 J 13 < 508/23/99 TB 09413 < 10 J 3 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 20 < 511/10/99 TB 10423 13 J 4 < 5 6 < 5 22 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 38 < 5

02/11/00 TB 11172 25 14 < 5 19 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 130 < 505/22/00 TB 11821 < 10 37 < 5 51 < 5 160 < 5 < 5 < 5 < 5 < 50 < 5 < 5 6 < 100 < 5 < 5 D 410 < 507/06/00 TB 12106 64 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 39 < 510/17/00 TB 12815 93 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 30 < 5

02/26/01 TB 13917 450 < 5 < 5 J 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 34 < 505/09/01 TB 14388 24 J 3 < 5 J 4 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 420 < 5 < 5 24 < 508/28/01 TB 15162 J 8 J 3 < 5 J 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 20 < 511/05/01 TB 15527 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 24 < 5

02/26/02 TB 16564 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 17 < 505/11/02 TB 16996 23 J 3 < 5 J 3 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 18 < 509/12/02 TB 17903 D 190 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 7 < 5

02/13/03 TB 18701 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 20 < 5

02/13/04 TB 20349 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 15 < 509/08/04 TB 21143 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 26 < 510/19/04 TB 21360 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 21 < 511/16/04 TB 21411 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 21 < 512/03/04 TB 21529 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

01/12/05 TB 21782 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 23 < 5

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 105 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

PW-015JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: Easement South

02/25/05 TB 22215 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 17 < 505/19/05 TB 22616 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 17 < 5

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 106 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

PW-016JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: Easement South

12/06/96 TB 00814 < 250 < 250 < 250 < 500 5600 < 250 370 < 250 < 500 < 250 < 2500 < 250 2400 < 500 1700

02/17/97 TB 01716 < 250 < 250 < 250 < 500 2400 < 250 J 75 < 250 < 500 < 250 < 2500 < 250 1100 < 500 46003/16/97 TB 01869 < 50 < 50 < 50 < 100 990 < 50 77 < 50 < 100 < 50 < 500 < 50 660 < 100 49004/09/97 TB 02014 < 50 < 50 < 50 < 100 830 < 50 72 < 50 < 100 < 50 < 500 < 50 620 < 100 48006/30/97 TB 02413 < 25 < 25 < 25 170 520 < 25 47 B 57 < 50 < 25 E 5300 < 25 430 < 50 34010/06/97 TB 02963 < 10 < 10 < 10 < 20 110 < 10 24 < 10 < 20 < 10 < 100 < 10 160 < 20 230

01/18/98 TB 03667 < 5 < 5 < 5 < 20 58 < 5 < 5 11 < 5 B 40 < 10 < 5 < 10 < 5 67 < 15 17501/18/98 TB 03676 280 < 50 400 < 200 1200 J 28 < 50 J 29 < 50 < 100 < 100 < 50 J 57 < 50 140 1400 22004/13/98 TB 04289 340 < 10 < 10 < 10 J 9 48 < 10 10 < 10 < 20 < 10 J 69 < 10 57 < 20 160

07/14/98 TB 05077 E 5800 < 25 < 25 < 25 < 100 25 < 25 < 25 < 50 < 25 < 50 < 50 < 25 < 50 < 250 < 25 J 25 < 75 84

02/17/99 TB 07549 3000 < 5 < 5 < 5 < 20 15 < 5 < 5 < 10 < 5 < 10 < 10 < 5 < 10 < 100 < 5 J 7 < 15 91

05/25/99 TB 08471 2000 < 5 < 5 < 5 < 20 58 < 5 J 3 J 6 < 5 < 10 < 10 < 5 < 10 < 100 < 5 29 < 15 150

08/23/99 TB 09414 D 2300 < 5 < 5 < 5 < 5 18 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 110

11/10/99 TB 10424 1200 < 5 < 5 < 5 < 5 13 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 61

02/21/00 TB 11265 7400000 < 50000 < 50000 < 50000 < 50000 < 50000 < 50000 < 50000 62000 < 50000 < 500000 < 50000 < 50000 < 50000 < 1000000 < 50000 210000 < 50000 34000002/21/00 TB 11261 1.2E+0804/08/00 TB 11535 2200 < 5 < 5 < 5 < 5 34 < 5 < 5 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 37 < 5 16105/20/00 TB 11811 D 3100 < 5 < 5 < 5 < 5 57 < 5 < 5 6 < 5 < 50 < 5 < 5 < 5 < 100 < 5 41 < 5 28806/06/00 TB 11908 2400 < 5 < 5 < 5 < 5 30 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 18 < 5 15010/17/00 TB 12816 1500 < 5 < 5 < 5 < 5 29 < 5 < 5 J 4 < 5 < 50 < 5 < 5 < 5 < 100 < 5 35 < 5 16111/03/00 TB 13112 1200 < 5 < 5 < 5 < 5 22 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 20 < 5 8611/03/00 TB 13099 46

01/06/01 TB 13529 D 3200 < 5 < 5 < 5 < 5 25 < 5 < 5 J 3 < 5 < 50 < 5 < 5 < 5 < 100 < 5 14 < 5 15902/24/01 TB 13903 D 2600 < 5 < 5 < 5 < 5 23 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 8 < 5 12904/06/01 TB 14155 210 < 5 < 5 < 5 < 5 26 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 17 < 5 14305/10/01 TB 14408 63 < 5 < 5 < 5 < 5 25 < 5 < 5 56 < 5 < 50 < 5 < 5 < 5 3100 < 5 10 < 5 11808/25/01 TB 15117 D 4900 < 5 < 5 < 5 < 5 39 < 5 < 5 19 < 5 < 50 < 5 < 5 < 5 < 100 < 5 30 < 5 21711/08/01 TB 15575 D 15000 < 5 < 5 < 5 6 91 < 5 5 D 310 < 5 < 5 < 5 < 5 < 5 < 50 < 5 D 900 < 5 966

02/26/02 TB 16567 D 6700 < 5 < 5 < 5 < 5 54 < 5 J 2 71 < 5 < 50 < 5 < 5 < 5 150 < 5 200 < 5 395

05/10/02 TB 16990 D 22000 < 13 < 13 < 13 < 13 90 < 13 J 5 170 < 13 < 125 < 13 < 13 < 13 < 250 < 13 370 < 13 895

07/08/02 TB 17396 2.5E+07

07/08/02 TB 17406 D 18000 < 10 < 10 < 10 20 90 < 10 J 4 150 < 10 < 100 < 10 < 10 < 10 < 200 < 10 310 < 10 816

09/12/02 TB 17904 D 32000 < 20 < 20 < 20 < 20 170 < 20 J 8 350 < 20 < 200 < 20 < 20 < 20 < 400 < 20 1000 < 20 1432

02/12/03 TB 18680 D 14000 < 25 < 25 < 25 < 25 47 < 25 < 25 150 < 25 < 250 < 25 < 25 < 25 < 500 < 25 D 300 < 25 660

02/12/04 TB 20324 11200 < 20 < 20 < 20 < 60 22 < 20 < 20 99 < 20 < 80 < 16 < 20 < 20 1390 < 20 145 < 8 415

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 107 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

PW-016JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: Easement South

09/08/04 TB 21144 16400 < 400 < 400 < 400 < 1200 < 400 < 400 < 400 < 400 < 400 < 1600 < 320 < 400 < 400 < 4000 < 400 < 400 < 160 J 52210/19/04 TB 21361 14200 < 250 < 250 < 250 < 750 < 250 < 250 < 250 < 250 < 250 < 1000 < 200 < 250 < 250 4130 < 250 250 < 100 72811/16/04 TB 21412 4530 < 100 < 100 < 100 < 300 < 100 < 100 < 100 < 100 < 100 < 400 < 80 < 100 < 100 3470 < 100 < 100 < 40 J 9712/03/04 TB 21530 2630 < 100 < 100 < 100 < 300 < 100 < 100 < 100 < 100 < 100 < 400 < 80 < 100 < 100 7240 < 100 < 100 < 40 < 100

01/12/05 TB 21769 2820 < 100 < 100 < 100 < 300 < 100 < 100 < 100 < 100 < 100 < 400 < 80 < 100 < 100 5190 < 100 < 100 < 40 < 10002/23/05 TB 22175 1920 < 50 < 50 < 50 < 150 < 50 < 50 < 50 < 50 < 50 < 200 < 40 < 50 < 50 4140 < 50 < 50 < 20 < 5006/14/05 TB 22658 1560 < 50 < 50 < 50 < 150 < 50 < 50 < 50 < 50 < 50 < 200 < 40 < 50 < 50 2540 < 50 < 50 < 20 J 25

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 108 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

PW-021JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: Easement South

04/08/98 TB 04262 < 1000 < 1000 < 1000 < 1000 J 1800 22000 < 1000 < 1000 < 1000 < 2000 < 1000 22000 < 1000 < 1000 < 2000 < 100004/26/98 TB 04421 < 5000 < 5000 < 5000 < 5000 J 7800 164000 < 5000 < 5000 < 5000 < 10000 < 5000 J 39000 < 5000 5700 < 10000 < 500006/04/98 TB 04708 J 240 < 500 530 B 2900 D 98000 < 500 < 500 J 510 < 500 < 1000 < 1000 < 500 < 1000 33000 < 500 3700 J 740 J 23007/14/98 TB 05078 J 2000 J 200 < 500 J 360 < 2000 D 130000 < 500 < 500 J 210 < 500 < 1000 < 1000 < 500 < 1000 15000 < 500 2500 J 800 < 50008/04/98 TB 05324 < 10000 < 5000 < 5000 < 5000 < 20000 130000 < 5000 < 5000 < 10000 < 5000 < 10000 < 10000 < 5000 < 10000 < 50000 < 5000 < 10000 < 15000 < 500009/16/98 TB 05843 600 330 < 250 450 < 1000 70000 < 250 < 250 J 410 < 250 < 500 < 500 < 250 < 500 27000 < 250 4100 990 J 22010/12/98 TB 06144 < 20000 < 1000 < 1000 < 1000 < 4000 D 40000 < 1000 < 1000 < 2000 < 1000 < 2000 < 2000 < 1000 < 2000 12000 < 1000 J 2000 J 280 < 100012/01/98 TB 06816 < 40000 < 2000 < 2000 < 2000 < 8000 4500 < 2000 < 2000 < 4000 < 2000 < 4000 < 4000 < 2000 < 4000 < 40000 < 2000 < 4000 < 6000 < 2000

01/11/99 TB 07192 < 5000 < 250 < 250 < 250 < 1000 D 19000 < 250 < 250 J 53 < 250 < 500 < 500 < 250 < 500 < 5000 < 250 610 < 750 J 5002/16/99 TB 07528 < 2500 < 125 < 125 < 125 < 500 2600 < 125 < 125 < 250 < 125 < 250 < 250 < 125 < 250 3500 < 125 J 61 < 375 < 125

05/17/99 TB 08315 < 1600 < 80 < 80 < 80 < 320 1400 < 80 < 80 < 160 < 80 < 160 < 160 < 80 < 160 16000 < 80 J 54 < 240 J 32

08/09/99 TB 09185 54 5 < 5 20 < 5 160 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 D 15000 < 5 J 4 9 J 12

11/03/99 TB 10311 60 38 < 10 78 < 10 270 < 10 18 < 10 < 10 < 100 < 10 < 10 < 10 4200 < 10 10 18 < 10

02/09/00 TB 11152 < 10 6 < 5 < 5 < 5 16 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 D 2400 < 5 < 5 6 < 1005/22/00 TB 11823 < 10 < 5 < 5 < 5 < 5 72 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 D 4100 < 5 < 5 < 5 < 510/17/00 TB 12818 130 8 < 5 7 < 5 220 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 D 4600 < 5 < 5 11 < 5

01/06/01 TB 13530 < 10 12 < 5 J 5 < 5 D 250 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 1900 < 5 < 5 9 < 502/23/01 TB 13865 59 J 5 < 5 < 5 < 5 70 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 2900 < 5 < 5 < 5 < 504/06/01 TB 14156 < 10 J 5 < 5 < 5 < 5 130 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 1300 < 5 < 5 < 5 J 205/09/01 TB 14389 < 10 6 < 5 < 5 < 5 54 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 J 4 J 106/03/01 TB 14581 200 7 < 5 6 J 5 D 360 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 3600 < 5 < 10 J 5 < 507/02/01 TB 14687 < 25 29 < 13 15 300 D 640 < 13 < 13 < 13 < 13 < 125 < 13 < 13 < 13 2900 < 13 40 29 < 1308/24/01 TB 15102 89 22 < 5 < 5 D 380 D 1000 < 5 < 5 < 5 < 5 J 27 < 5 < 5 < 5 D 9000 < 5 22 13 1811/05/01 TB 15528 62 12 < 10 < 10 49 D 610 < 10 < 10 < 10 < 10 J 10 < 10 < 10 < 10 D 10000 < 10 J 10 < 10 < 1012/17/01 TB 15984 < 40 < 20 < 20 < 20 < 20 500 < 20 < 20 < 20 < 20 < 200 < 20 < 20 < 20 6200 < 20 < 20 < 20 < 20

01/08/02 TB 16108 120 < 40 < 40 < 40 59 610 < 40 < 40 < 40 < 40 < 400 < 40 < 40 < 40 11000 < 40 < 40 < 40 < 4002/01/02 TB 16292 86 J 9 < 10 J 6 < 10 440 < 10 < 10 < 10 < 10 < 100 < 10 < 10 < 10 D 7800 < 10 < 10 J 8 J 1004/01/02 TB 16769 160 J 11 < 25 < 25 < 25 610 < 25 < 25 < 25 < 25 < 250 < 25 < 25 < 25 D 5800 < 25 J 10 J 5 < 2505/04/02 TB 16907 100 10 < 10 < 10 < 10 410 < 10 < 10 < 10 < 10 < 100 < 10 < 10 < 10 D 5400 < 10 < 10 J 5 < 1006/18/02 TB 17343 210 J 6 < 10 < 10 < 10 360 < 10 < 10 < 10 < 10 < 100 < 10 < 10 < 10 D 6900 < 10 J 9 < 10 < 10

08/30/02 TB 17841 47 J 8 < 10 < 10 < 10 360 < 10 < 10 J 4 < 10 < 100 < 10 < 10 < 10 D 8600 < 10 J 2 J 6 J 4

10/18/02 TB 18084 140 J 4 < 10 < 10 < 10 340 < 10 < 10 < 10 < 10 < 100 < 10 < 10 < 10 D 7700 < 10 J 6 < 10 J 12

11/11/02 TB 18190 41 11 < 10 J 6 < 10 430 < 10 < 10 < 10 < 10 < 100 < 10 < 10 < 10 D 11700 < 10 J 4 J 6 J 14

01/23/03 TB 18517 150 J 4 < 10 < 10 24 410 < 10 < 10 J 4 < 10 < 10 < 10 < 10 < 10 D 6000 < 10 J 10 J 4 J 12

01/28/03 TB 18531 97 < 25 < 25 < 25 74 570 < 25 < 25 < 5 < 25 < 25 < 25 < 25 < 25 12000 < 25 J 18 < 25 J 704/15/03 TB 19122 79 < 25 < 25 < 25 < 75 1100 < 25 < 25 < 25 < 25 < 100 < 20 < 25 < 25 11800 < 25 30 < 10 < 25

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 109 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

PW-021JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: Easement South

05/06/03 TB 19156 80 < 20 < 20 < 20 < 60 436 < 20 < 20 < 20 < 20 < 80 < 16 < 20 < 20 6210 < 20 < 20 < 8 < 2006/17/03 TB 19398 14 < 10 < 10 < 10 < 30 488 < 10 < 10 < 10 < 10 < 40 < 8 < 10 < 10 6150 < 10 < 10 < 4 < 1007/09/03 TB 19475 58 < 10 < 10 < 10 < 30 298 < 10 < 10 < 10 < 10 < 40 < 8 < 10 < 10 5190 < 10 < 10 < 4 < 1008/07/03 TB 19551 < 5 < 5 < 5 < 5 < 15 242 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 7500 < 5 < 5 < 2 J 209/19/03 TB 19835 21 < 5 < 5 < 5 < 15 215 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 6780 < 5 < 5 < 2 < 510/10/03 TB 19899 40 < 10 < 10 < 10 < 30 268 < 10 < 10 < 10 < 10 < 40 < 8 < 10 < 10 10600 < 10 10 < 4 < 1011/07/03 TB 19945 14 < 5 < 5 < 5 < 15 106 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 5240 < 5 < 5 < 2 < 512/12/03 TB 20170 37 < 5 < 5 < 5 < 15 135 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 4350 < 5 < 5 < 2 < 5

02/06/04 TB 20295 37 5 < 5 6 < 15 588 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 4390 < 5 5 J 8 J 304/08/04 TB 20654 < 20 < 20 < 20 < 20 < 60 724 < 20 < 20 < 20 < 20 < 80 < 16 < 20 < 20 10100 < 20 < 20 < 8 < 20

05/19/04 TB 20748 < 20 < 20 < 20 < 20 < 60 868 < 20 < 20 < 20 < 20 < 80 < 16 < 20 < 20 11000 < 20 < 20 < 8 < 2006/25/04 TB 20812 35 < 20 < 20 < 20 < 60 2240 < 20 < 20 < 20 < 20 < 80 < 16 < 20 < 20 14200 < 20 < 20 J 8 < 2009/08/04 TB 21147 27 < 20 < 20 < 20 < 60 1310 < 20 < 20 < 20 < 20 < 80 < 16 < 20 < 20 8650 < 20 < 20 < 8 < 20

02/18/05 TB 22120 < 5 < 5 < 5 < 5 < 15 132 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 4480 < 5 < 5 < 2 < 505/17/05 TB 22576 9 < 5 < 5 < 5 < 15 272 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 7640 < 5 < 5 < 2 < 5

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 110 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

PW-022JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: Easement South

04/08/98 TB 04263 < 500 < 500 < 500 < 500 1000 8100 < 500 < 500 < 500 < 1000 < 500 8900 < 500 < 500 < 1000 < 50004/26/98 TB 04422 < 250 < 250 < 250 < 250 J 350 9800 400 < 250 < 250 < 500 < 250 14000 < 250 460 < 500 25006/04/98 TB 04700 < 500 < 500 1200 J 500 28000 < 500 J 310 < 1000 < 500 < 1000 < 1000 < 500 < 1000 13000 < 500 J 420 < 1500 < 50007/14/98 TB 05079 J 210 < 500 < 500 < 500 < 2000 12000 < 500 < 500 < 1000 < 500 < 1000 < 1000 < 500 < 1000 19000 < 500 < 1000 < 1500 < 50008/04/98 TB 05325 < 1000 < 500 < 500 < 500 < 2000 9600 < 500 < 500 < 1000 < 500 < 1000 < 1000 < 500 < 1000 21000 < 500 < 1000 < 1500 < 50009/16/98 TB 05844 < 500 < 250 < 250 J 120 < 1000 4600 < 250 < 250 < 500 < 250 < 500 < 500 < 250 < 500 12000 < 250 J 88 < 750 < 25010/15/98 TB 06146 < 2000 < 100 < 100 160 870 1800 < 100 J 71 J 36 < 100 < 200 < 200 < 100 < 200 88000 < 100 J 56 J 24 J 3711/03/98 TB 06354 < 500 < 25 < 25 34 < 100 790 < 25 < 25 < 50 < 25 < 50 < 50 < 25 < 50 17000 < 25 < 50 < 75 < 2512/01/98 TB 06817 J 38 < 5 < 5 74 < 20 D 750 < 5 14 J 6 < 5 < 10 < 10 < 5 < 10 19000 < 5 13 < 15 29

01/11/99 TB 07193 < 100 < 5 < 5 32 < 20 190 < 5 J 4 J 2 < 5 < 10 < 10 < 5 < 10 12000 < 5 J 1 < 15 J 4

02/16/99 TB 07529 < 500 < 25 < 25 28 < 100 190 < 25 < 25 < 50 < 25 < 50 < 50 < 25 < 50 6300 < 25 < 50 < 75 < 2505/17/99 TB 08316 < 100 J 2 < 5 24 34 34 < 5 J 4 < 10 < 5 < 10 < 10 < 5 < 10 D 6000 < 5 < 10 < 15 J 2

08/09/99 TB 09186 < 10 < 5 < 5 43 < 5 7 < 5 6 < 5 < 5 < 50 < 5 < 5 < 5 D 7200 < 5 < 5 J 3 < 511/03/99 TB 10312 < 10 < 5 < 5 28 < 5 6 < 5 6 < 5 < 5 < 50 < 5 < 5 < 5 D 5000 < 5 < 5 < 5 < 5

02/09/00 TB 11153 < 10 J 4 < 5 44 < 5 J 4 < 5 23 < 5 < 5 < 50 < 5 < 5 < 5 2600 < 5 < 5 < 5 < 505/22/00 TB 11824 < 10 < 5 < 5 12 < 5 11 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 D 2400 < 5 < 5 < 5 < 510/17/00 TB 12819 < 10 18 < 5 58 < 5 D 620 6 24 < 5 6 < 50 < 5 < 5 < 5 D 6800 < 5 < 5 31 J 3

01/06/01 TB 13531 2700 26 < 5 < 5 350 D 1700 < 5 J 5 < 5 < 5 < 50 < 5 < 5 < 5 D 6900 < 5 23 < 5 < 503/01/01 TB 13961 < 10 6 < 5 < 5 < 5 59 < 5 16 < 5 < 5 < 50 < 5 < 5 < 5 1900 < 5 < 5 < 5 < 503/14/01 TB 14011 < 10 10 < 5 9 50 D 380 < 5 8 < 5 < 5 < 50 < 5 < 5 < 5 D 4700 < 5 8 J 4 J 104/06/01 TB 14157 400 12 < 5 13 12 D 900 < 5 7 < 5 < 5 J 8 < 5 < 5 < 5 D 5400 < 5 6 < 5 J 105/09/01 TB 14390 < 10 27 < 5 19 66 D 1400 < 5 11 < 5 < 5 J 33 < 5 < 5 < 5 D 4900 < 5 20 J 4 J 206/03/01 TB 14580 E 480 13 < 5 11 42 D 620 < 5 16 < 5 < 5 J 21 < 5 < 5 < 5 D 4500 < 5 10 < 5 J 307/02/01 TB 14688 J 8 7 < 5 51 11 120 < 5 34 < 5 < 5 < 50 < 5 < 5 < 5 D 8000 < 5 < 5 < 5 < 508/24/01 TB 15103 430 J 7 < 10 82 < 10 360 J 9 53 < 10 14 < 100 < 10 < 10 < 10 D 6100 < 10 J 5 J 5 < 1009/11/01 TB 15229 < 20 < 10 < 10 33 < 10 250 < 10 26 < 10 < 10 < 100 < 10 < 10 < 10 D 5300 < 10 < 10 < 10 < 1010/14/01 TB 15336 < 10 14 < 5 160 < 5 840 24 140 < 5 40 < 50 < 5 < 5 5 D 6000 < 5 16 20 J 511/05/01 TB 15529 J 5 < 5 < 5 24 < 5 210 < 5 13 < 5 < 5 < 50 < 5 < 5 < 5 D 18000 < 5 < 5 J 3 J 1

02/01/02 TB 16293 J 25 J 10 < 25 100 < 25 480 J 16 53 < 25 41 < 250 < 25 < 25 < 25 D 11000 < 25 < 25 J 10 < 2504/01/02 TB 16770 J 2 7 < 5 36 < 5 D 220 7 J 3 < 5 < 5 < 50 J 3 < 5 < 5 D 24000 < 5 J 3 8 J 3

05/04/02 TB 16908 16 6 < 5 26 < 5 200 < 5 9 < 5 < 5 < 50 < 5 < 5 < 5 D 16000 < 5 < 5 J 3 J 1

06/18/02 TB 17344 220 J 2 < 5 6 16 120 < 5 6 < 5 < 5 < 50 J 2 < 5 < 5 D 9500 < 5 < 5 < 5 < 509/07/02 TB 17883 21 7 < 5 7 10 160 J 4 J 2 < 5 < 5 < 50 J 2 < 5 J 2 D 14000 < 5 < 5 13 < 5

01/30/03 TB 18548 < 10 28 < 5 76 120 D 730 11 15 < 5 J 2 J 34 < 5 < 5 J 3 D 32000 < 5 6 25 < 505/07/03 TB 19180 54 < 5 < 5 15 < 15 201 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 15900 < 5 < 5 < 2 < 508/27/03 TB 19768 < 20 < 20 < 20 < 20 < 60 784 < 20 < 20 < 20 < 20 < 80 < 16 < 20 < 20 24700 < 20 < 20 < 8 < 20

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 111 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

PW-022JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: Easement South

11/07/03 TB 19949 < 5 < 5 < 5 < 5 < 15 56 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 10400 < 5 < 5 < 2 < 5

02/06/04 TB 20296 < 50 < 50 < 50 100 J 350 3490 < 50 50 < 50 < 50 < 200 < 40 < 50 < 50 33800 < 50 < 50 J 27 < 5004/08/04 TB 20655 < 100 < 100 < 100 163 < 300 4450 < 100 < 100 < 100 < 100 < 400 < 80 < 100 < 100 34900 < 100 < 100 < 40 < 10005/19/04 TB 20749 < 100 < 100 < 100 < 100 < 300 2660 < 100 < 100 < 100 < 100 < 400 < 80 < 100 < 100 54600 < 100 < 100 < 40 < 10006/25/04 TB 20813 < 50 < 50 < 50 118 < 150 2160 < 50 74 < 50 < 50 < 200 < 40 < 50 < 50 57800 < 50 < 50 J 26 < 5009/08/04 TB 21148 5 18 < 5 17 J 15 710 < 5 7 < 5 < 5 < 20 < 4 < 5 < 5 25600 < 5 8 J 3 J 2

02/25/05 TB 22199 < 25 < 25 < 25 < 25 < 75 1040 < 25 < 25 < 25 < 25 < 100 < 20 < 25 < 25 35300 < 25 < 25 < 10 < 2505/17/05 TB 22577 < 25 < 25 < 25 < 25 < 75 1420 < 25 < 25 < 25 < 25 < 100 < 20 < 25 < 25 52200 < 25 < 25 < 10 < 25

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 112 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

PW-023JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: Easement South

04/08/98 TB 04264 J 23 79 < 25 < 25 51 420 < 25 < 25 < 25 < 50 < 25 E 7900 < 25 < 25 59 < 2504/26/98 TB 04423 < 250 < 250 < 250 < 250 730 4600 < 250 < 250 < 250 < 500 < 250 19000 < 250 J 200 < 500 < 25006/04/98 TB 04701 < 500 < 500 J 230 < 2000 27000 < 500 < 500 < 1000 < 500 < 1000 < 1000 < 500 < 1000 23000 < 500 J 490 < 1500 < 50007/14/98 TB 05080 J 95 J 11 < 25 42 J 40 590 < 25 < 25 < 50 < 25 < 50 < 50 < 25 < 50 D 13000 < 25 J 14 J 19 < 2508/04/98 TB 05326 220 J 5 < 25 55 < 100 640 < 25 < 25 < 50 < 25 < 50 < 50 < 25 < 50 25000 < 25 J 15 J 15 J 2009/16/98 TB 05845 J 39 40 < 25 67 < 100 1000 < 25 < 25 J 12 < 25 < 50 < 50 < 25 < 50 12000 < 25 J 10 J 19 J 1510/15/98 TB 06147 < 500 J 32 < 50 89 < 200 220 < 50 < 50 < 100 < 50 < 100 < 100 < 50 < 100 44000 < 50 < 100 J 41 < 5011/03/98 TB 06355 < 500 < 25 < 25 46 < 100 220 < 25 < 25 < 50 < 25 < 50 < 50 < 25 < 50 7300 < 25 < 50 < 75 < 25

02/16/99 TB 07530 J 14 47 < 10 60 < 40 D 2100 < 10 15 < 20 < 10 < 20 < 20 < 10 < 20 D 3200 < 10 J 5 J 28 J 505/17/99 TB 08317 < 250 18 < 13 74 < 50 300 J 3 J 4 < 25 < 13 < 25 < 25 < 13 < 25 1400 < 13 < 25 J 12 J 3

08/09/99 TB 09187 < 10 5 < 5 62 < 5 69 < 5 5 < 5 < 5 < 50 < 5 < 5 < 5 670 < 5 < 5 J 5 < 511/03/99 TB 10313 < 10 < 5 < 5 28 < 5 100 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 200 < 5 < 5 < 5 < 5

02/09/00 TB 11154 < 10 < 5 < 5 26 < 5 29 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 505/22/00 TB 11825 < 10 J 4 < 5 18 < 5 14 < 5 J 3 < 5 < 5 < 50 < 5 < 5 < 5 270 < 5 < 5 7 < 510/17/00 TB 12820 < 10 13 < 5 27 < 5 17 < 5 6 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 18 < 5

02/23/01 TB 13866 500 20 < 5 34 < 5 35 < 5 5 < 5 < 5 < 50 < 5 < 5 < 5 D 3800 < 5 < 5 12 J 105/09/01 TB 14391 < 10 17 < 5 28 < 5 150 < 5 J 4 < 5 < 5 < 50 < 5 < 5 < 5 D 4100 < 5 < 5 11 J 108/24/01 TB 15104 51 J 4 < 5 25 < 5 17 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 D 2000 < 5 < 5 J 4 < 511/05/01 TB 15530 18 J 5 < 5 25 < 5 23 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 1400 < 5 < 5 6 < 5

02/02/02 TB 16302 50 J 5 < 5 23 < 5 12 J 3 J 3 < 5 < 5 < 50 < 5 < 5 < 5 730 < 5 < 5 11 < 505/04/02 TB 16909 < 10 6 < 5 27 < 5 17 J 3 J 4 < 5 < 5 < 50 < 5 < 5 < 5 950 < 5 < 5 8 < 508/30/02 TB 17842 < 10 8 < 5 22 < 5 30 J 3 J 3 < 5 < 5 < 50 < 5 < 5 J 2 740 < 5 < 5 11 < 5

01/28/03 TB 18532 < 10 J 3 < 5 13 < 5 J 3 J 2 J 2 < 5 < 5 < 50 < 5 < 5 < 5 1100 < 5 < 5 J 3 J 105/07/03 TB 19181 < 5 5 < 5 20 < 15 6 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 625 < 5 < 5 J 4 < 508/07/03 TB 19550 < 5 5 < 5 18 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 745 < 5 < 5 J 3 < 511/07/03 TB 19950 < 5 9 < 5 17 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 1100 < 5 < 5 15 < 5

02/06/04 TB 20297 16 < 5 < 5 14 < 15 20 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 548 < 5 < 5 < 2 J 209/07/04 TB 21117 < 5 70 < 5 10 < 15 55 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 2600 < 5 < 5 120 < 5

02/25/05 TB 22216 6 8 < 5 < 5 < 15 8 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 854 < 5 < 5 < 2 < 5

05/17/05 TB 22578 < 5 12 < 5 17 < 15 699 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 12800 < 5 < 5 J 4 < 5

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 113 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

PW-024JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: Easement South

04/08/98 TB 04265 < 5 18 < 5 110 J 7 < 5 < 5 < 5 < 5 < 10 < 5 E 8200 < 5 < 5 14 < 504/26/98 TB 04424 < 500 820 < 500 < 500 6000 17000 < 500 < 500 < 500 < 1000 < 500 45000 < 500 900 2200 < 50006/04/98 TB 04702 1200 < 500 740 J 1600 20000 < 500 < 500 < 1000 < 500 < 1000 < 1000 < 500 < 1000 11000 < 500 1700 6800 < 50007/14/98 TB 05081 J 1000 J 350 < 500 J 210 J 870 9700 < 500 < 500 < 1000 < 500 < 1000 < 1000 < 500 < 1000 13000 < 500 1400 J 620 < 50008/04/98 TB 05327 1100 J 300 < 500 J 200 < 2000 7400 < 500 < 500 < 1000 < 500 < 1000 < 1000 < 500 < 1000 15000 < 500 J 900 J 700 < 50009/16/98 TB 05846 < 500 450 < 250 390 < 1000 8700 < 250 < 250 J 110 < 250 < 500 < 500 < 250 < 500 13000 < 250 860 1500 J 8210/15/98 TB 06148 J 370 520 < 250 360 < 1000 7900 < 250 < 250 J 110 < 250 < 500 < 500 < 250 < 500 13000 < 250 850 1500 J 7211/03/98 TB 06356 < 5000 J 250 < 250 J 220 < 1000 4700 < 250 < 250 < 500 < 250 < 500 < 500 < 250 < 500 11000 < 250 J 410 960 < 25012/01/98 TB 06818 < 2000 190 < 100 260 < 400 2600 < 100 < 100 < 200 < 100 < 200 < 200 < 100 < 200 20000 < 100 240 560 < 100

01/11/99 TB 07194 < 2000 120 < 100 290 < 400 1400 < 100 < 100 J 69 < 100 < 200 < 200 < 100 < 200 9000 < 100 260 320 J 120

02/16/99 TB 07531 J 58 280 < 100 240 < 400 D 4300 < 100 J 59 J 47 < 100 < 200 < 200 < 100 < 200 4900 < 100 380 1200 J 26

05/17/99 TB 08318 < 2000 180 < 100 170 < 400 3400 < 100 J 28 J 33 < 100 < 200 < 200 < 100 < 200 4700 < 100 200 660 < 10008/09/99 TB 09188 < 200 140 < 100 130 < 100 2800 < 100 < 100 J 38 < 100 < 1000 < 100 < 100 < 100 3700 < 100 220 340 J 31

11/03/99 TB 10314 330 J 64 < 80 < 80 < 80 2000 < 80 < 80 J 64 < 80 < 800 < 80 < 80 < 80 3900 < 80 280 110 < 80

02/09/00 TB 11155 160 49 < 25 41 < 25 1040 < 25 < 25 62 < 25 < 250 < 25 < 25 < 25 1600 < 25 190 100 J 2605/22/00 TB 11826 130 50 < 20 51 < 20 620 < 20 < 20 32 < 20 < 200 < 20 < 20 < 20 1400 < 20 120 150 J 2408/05/00 TB 12335 < 40 38 < 20 53 < 20 570 < 20 < 20 < 20 < 20 < 200 < 20 < 20 < 20 < 400 < 20 86 200 < 2010/17/00 TB 12821 130 38 < 20 44 < 20 D 300 < 20 < 20 24 < 20 < 200 < 20 < 20 < 20 < 400 < 20 60 200 J 40

02/23/01 TB 13867 59 35 < 5 39 < 5 94 < 5 < 5 7 < 5 < 50 < 5 < 5 < 5 450 < 5 12 200 J 505/09/01 TB 14392 110 45 < 5 49 < 5 120 J 5 6 19 < 5 J 5 < 5 < 5 5 2100 < 5 26 160 4208/24/01 TB 15113 63 40 < 5 64 < 5 130 5 J 5 11 < 5 < 50 < 5 < 5 7 1100 < 5 11 210 2511/05/01 TB 15531 61 48 < 5 59 < 5 83 6 5 10 < 5 < 50 < 5 < 5 8 1100 < 5 J 5 D 230 16

02/02/02 TB 16303 99 38 < 5 52 < 5 93 J 5 J 3 5 < 5 < 50 < 5 < 5 6 720 < 5 J 2 D 200 905/04/02 TB 16910 49 32 < 5 42 < 5 79 J 4 J 3 6 < 5 < 50 < 5 < 5 J 4 940 < 5 < 5 190 1009/07/02 TB 17884 100 33 < 5 39 < 5 82 J 4 J 3 J 4 < 5 < 50 < 5 < 5 J 5 1200 < 5 J 1 150 811/11/02 TB 18191 75 36 < 5 32 < 5 79 J 3 J 3 J 5 < 5 < 50 < 5 < 5 5 1040 < 5 J 2 160 J 8

01/28/03 TB 18533 140 22 < 5 26 < 5 58 J 2 J 2 6 < 5 < 50 < 5 < 5 J 3 1100 < 5 J 1 140 912/15/03 TB 20194 14 26 < 5 25 J 32 29 < 5 < 5 < 5 < 5 < 20 < 4 < 5 5 796 < 5 < 5 131 < 5

02/06/04 TB 20298 113 21 < 5 29 < 15 60 < 5 < 5 < 5 < 5 < 20 < 4 < 5 5 404 < 5 < 5 149 8

09/08/04 TB 21149 18 21 < 5 27 < 15 29 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 863 < 5 < 5 140 < 510/19/04 TB 21362 138 14 < 5 28 < 15 120 < 5 5 < 5 < 5 < 20 < 4 < 5 < 5 528 < 5 < 5 104 8

11/16/04 TB 21413 43 15 < 5 17 < 15 24 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 865 < 5 < 5 105 < 512/02/04 TB 21518 25 21 < 5 19 < 15 29 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 1650 < 5 < 5 96 < 5

01/12/05 TB 21770 39 11 < 5 17 < 15 27 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 273 < 5 < 5 87 < 502/25/05 TB 22217 16 94 < 5 17 < 15 11 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 1710 < 5 10 62 < 5

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 114 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

PW-024JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: Easement South

06/09/05 TB 22648 < 5 15 < 5 16 < 15 18 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 1750 < 5 < 5 71 < 5

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 115 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

PW-025JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: Easement South

06/01/98 TB 04660 < 500 < 500 J 300 < 2000 J 400 < 500 < 500 < 1000 < 500 < 1000 < 1000 < 500 < 1000 2100 < 500 800 < 1500 < 500

09/07/04 TB 21118 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 510/19/04 TB 21363 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 511/16/04 TB 21414 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 J 2 < 512/03/04 TB 21531 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 155 < 5 < 5 J 5 < 5

01/12/05 TB 21783 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 502/18/05 TB 22121 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 178 < 5 < 5 J 9 < 504/12/05 TB 22349 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 116 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

PW-034JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: Easement South

09/16/98 TB 05835 370 170 < 100 400 1200 D 14000 < 100 J 51 J 89 < 100 J 120 < 200 < 100 < 200 11000 < 100 1500 560 J 13010/16/98 TB 06154 J 100 < 100 < 100 J 57 < 400 1200 < 100 < 100 < 200 < 100 < 200 < 200 < 100 < 200 7700 < 100 J 160 J 31 J 5011/03/98 TB 06358 < 500 36 < 25 120 < 100 1200 < 25 J 18 J 27 < 25 < 50 < 50 < 25 < 50 2200 < 25 290 J 24 14012/02/98 TB 06839 J 16 J 4 < 5 11 < 20 39 < 5 < 5 < 10 < 5 < 10 < 10 < 5 < 10 1800 < 5 < 10 < 15 J 8

01/11/99 TB 07196 150 37 < 5 31 < 20 D 300 < 5 J 5 J 3 < 5 < 10 < 10 < 5 J 3 D 2300 < 5 11 < 15 2502/16/99 TB 07536 J 17 150 < 5 64 J 11 D 690 < 5 J 4 < 10 < 5 < 10 < 10 < 5 15 D 4000 < 5 J 6 28 J 1104/13/99 TB 08030 < 500 D 210 < 25 75 < 100 D 2100 < 25 < 25 < 50 < 25 < 50 < 50 < 25 J 27 7900 < 25 J 43 100 J 1605/17/99 TB 08319 < 500 210 < 25 61 < 100 1200 < 50 < 25 < 25 < 25 < 50 < 10 < 25 < 10 6600 < 25 J 50 < 75 < 10008/09/99 TB 09189 < 10 19 < 5 17 < 5 87 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 840 < 5 < 5 7 < 510/18/99 TB 10090 110 J 3 < 5 7 < 5 11 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 J 59 < 5 < 5 6 < 5

11/03/99 TB 10315 < 10 11 < 5 8 < 5 170 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 800 < 5 < 5 16 J 2

12/21/99 TB 10795 12 12 < 5 15 < 5 50 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 430 < 5 11 32 < 10

02/09/00 TB 11157 < 10 10 < 5 14 < 5 37 < 5 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 505/25/00 TB 11828 < 10 < 5 < 5 < 5 < 5 23 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 660 < 5 < 5 6 < 507/06/00 TB 12107 330 J 4 < 5 < 5 < 5 18 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 660 < 5 < 5 7 < 508/05/00 TB 12337 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 510/17/00 TB 12823 < 10 < 5 < 5 < 5 < 5 39 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 1500 < 5 < 5 21 < 5

02/24/01 TB 13904 410 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 505/09/01 TB 14394 < 10 6 < 5 < 5 < 5 151 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 1690 < 5 < 5 J 4 J 108/24/01 TB 15106 J 5 9 < 5 J 5 < 5 J 3 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 D 4100 < 5 < 5 < 5 < 511/05/01 TB 15533 18 9 < 5 < 5 < 5 33 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 D 3700 < 5 < 5 17 < 512/17/01 TB 15986 11 11 < 5 < 5 < 5 89 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 2200 < 5 J 3 54 < 5

01/08/02 TB 16110 17 68 < 5 26 < 5 D 390 < 5 J 3 < 5 < 5 < 50 < 5 < 5 < 5 D 21000 < 5 9 18 J 502/01/02 TB 16295 J 7 48 < 5 25 < 5 D 220 < 5 J 3 < 5 < 5 < 50 < 5 < 5 < 5 D 13000 < 5 < 5 19 J 305/04/02 TB 16912 J 16 93 < 10 37 < 10 D 1000 < 10 J 10 < 10 < 10 < 100 < 10 < 10 < 10 D 14000 < 10 J 6 66 < 1006/18/02 TB 17345 J 9 13 < 5 J 3 < 5 11 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 1300 < 5 < 5 < 5 < 508/30/02 TB 17844 J 10 12 < 10 < 10 < 10 D 3000 < 10 < 10 < 10 < 10 < 100 J 2 < 10 < 10 D 15000 < 10 J 9 16 < 10

01/30/03 TB 18549 < 100 J 24 < 50 < 50 < 50 1800 < 50 < 50 < 50 < 50 < 500 < 50 < 50 < 50 D 35000 < 50 < 50 79 < 5005/07/03 TB 19182 < 5 < 5 < 5 < 5 < 15 22 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 4980 < 5 < 5 < 2 < 508/07/03 TB 19552 < 5 < 5 < 5 < 5 < 15 7 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 2850 < 5 < 5 < 2 < 5

11/07/03 TB 19951 8 < 5 < 5 < 5 < 15 112 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 3170 < 5 < 5 < 2 < 5

02/06/04 TB 20299 6 19 < 5 36 J 30 811 < 5 13 < 5 < 5 < 20 < 4 < 5 < 5 5020 < 5 6 38 J 5

05/19/04 TB 20750 11 31 < 5 14 45 3170 < 5 5 < 5 7 < 20 < 4 < 5 < 5 20500 < 5 13 38 J 3

06/25/04 TB 20814 < 80 < 80 < 80 < 80 < 240 4550 < 80 < 80 < 80 < 80 < 320 < 64 < 80 < 80 26400 < 80 < 80 J 59 < 8009/07/04 TB 21119 < 5 17 < 5 < 5 < 15 3180 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 9690 < 5 54 42 J 5

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 117 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

PW-034JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: Easement South

02/18/05 TB 22122 < 10 < 10 < 10 < 10 < 30 495 < 10 36 < 10 < 10 < 40 < 8 < 10 < 10 14200 < 10 < 10 < 4 < 1005/17/05 TB 22581 < 5 < 5 < 5 < 5 < 15 23 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 5950 < 5 < 5 J 2 < 5

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 118 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

PW-036JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: Easement South

09/17/98 TB 05849 J 2700 < 2500 < 2500 J 1600 J 2300 85000 < 2500 < 2500 J 750 < 2500 < 5000 < 5000 < 2500 < 5000 J 13000 < 2500 8300 J 1800 J 54010/16/98 TB 06155 < 50000 J 1700 < 2500 J 2500 < 10000 D 160000 < 2500 < 2500 J 890 < 2500 < 5000 < 5000 < 2500 < 5000 J 22000 < 2500 16000 J 6100 J 54011/03/98 TB 06359 < 50000 < 2500 < 2500 J 940 < 10000 E 110000 < 2500 < 2500 < 5000 < 2500 < 5000 < 5000 < 2500 < 5000 J 12000 < 2500 6800 J 2400 < 250012/02/98 TB 06840 < 100000 < 5000 < 5000 < 5000 < 20000 69000 < 5000 < 5000 < 10000 < 5000 < 10000 < 10000 < 5000 < 10000 < 100000 < 5000 J 4000 < 15000 < 5000

01/11/99 TB 07197 < 50000 J 920 < 2500 < 2500 < 10000 98000 < 2500 < 2500 < 5000 < 2500 < 5000 < 5000 < 2500 < 5000 < 50000 < 2500 7600 J 2200 < 250002/16/99 TB 07537 < 50000 J 600 < 2500 J 1000 < 10000 61000 < 2500 < 2500 < 5000 < 2500 < 5000 < 5000 < 2500 < 5000 J 30000 < 2500 7200 J 690 < 250003/18/99 TB 07790 < 20000 J 700 < 1000 J 750 < 4000 45000 < 1000 < 1000 J 640 < 1000 < 2000 < 2000 < 1000 < 2000 < 20000 < 1000 5800 J 790 J 45004/19/99 TB 08070 < 20000 1100 < 1000 1900 < 4000 42000 < 1000 < 1000 J 550 < 1000 < 2000 < 2000 < 1000 < 2000 < 20000 < 1000 7800 J 830 J 50005/17/99 TB 08320 < 20000 J 570 < 1000 < 1000 < 4000 40000 < 1000 < 1000 J 390 < 1000 < 2000 < 2000 < 1000 < 2000 < 20000 < 1000 5600 J 440 < 100006/08/99 TB 08608 < 20000 J 460 < 1000 < 1000 < 4000 44000 < 1000 < 1000 J 580 < 1000 < 2000 < 2000 < 1000 < 2000 < 20000 < 1000 6100 J 590 J 290

07/06/99 TB 08884 < 20000 J 750 < 1000 1100 < 4000 41000 < 1000 < 1000 J 530 < 1000 < 2000 < 2000 < 1000 < 2000 < 20000 < 1000 6300 J 2100 < 100008/09/99 TB 09190 < 1000 J 280 < 500 < 500 < 500 D 18000 < 500 < 500 J 490 < 500 < 5000 < 500 < 500 < 500 < 10000 < 500 2900 J 250 < 50009/09/99 TB 09632 2200 J 200 < 250 270 < 250 D 35000 < 250 < 250 1100 < 250 < 2500 < 250 < 250 < 250 5700 < 250 5500 410 J 500

10/18/99 TB 10091 < 2000 J 360 < 1000 J 240 < 1000 26000 < 1000 < 1000 J 780 < 1000 < 10000 < 1000 < 1000 < 1000 < 20000 < 1000 3130 < 1000 J 340

11/03/99 TB 10316 J 1940 < 1000 < 1000 < 1000 < 1000 29400 < 1000 < 1000 < 1000 < 1000 < 10000 < 1000 < 1000 < 1000 < 20000 < 1000 3750 < 1000 < 100012/21/99 TB 10796 J 1800 < 1000 < 1000 < 1000 < 1000 20300 < 1000 < 1000 < 1000 < 1000 < 10000 < 1000 < 1000 < 1000 < 20000 < 1000 1900 < 1000 < 1000

01/06/00 TB 10890 6500 < 1000 < 1000 < 1000 < 1000 34000 < 1000 < 1000 < 1000 < 1000 < 10000 < 1000 < 1000 < 1000 J 7000 < 1000 3900 < 1000 < 100002/09/00 TB 11158 < 2000 < 1000 < 1000 < 1000 < 1000 27000 < 1000 < 1000 < 1000 < 1000 < 10000 < 1000 < 1000 < 1000 < 20000 < 1000 2700 < 1000 < 100003/05/00 TB 11325 < 1000 < 500 < 500 < 500 < 500 15600 < 500 < 500 < 500 < 500 < 5000 < 500 < 500 < 500 < 10000 < 500 3100 < 500 < 50004/08/00 TB 11536 48000 < 1000 < 1000 < 1000 < 1000 10000 < 1000 < 1000 J 480 < 1000 < 10000 < 1000 < 1000 < 1000 < 20000 < 1000 2900 < 1000 J 40005/22/00 TB 11829 700 < 100 < 100 < 100 < 100 3700 < 100 < 100 J 82 < 100 < 1000 < 100 < 100 < 100 < 2000 < 100 460 < 100 J 10006/06/00 TB 11911 < 200 < 100 < 100 < 100 < 100 D 5420 < 100 < 100 120 < 100 < 1000 < 100 < 100 < 100 < 2000 < 100 780 < 100 J 10007/06/00 TB 12108 1300 220 < 100 520 < 100 D 5500 < 100 < 100 520 < 100 < 1000 < 100 < 100 < 100 7700 < 100 2700 250 122008/05/00 TB 12338 < 400 < 200 < 200 < 200 < 200 5900 < 200 < 200 330 < 200 < 2000 < 200 < 200 < 200 5000 < 200 2300 < 200 J 40010/18/00 TB 12841 < 500 < 250 < 250 < 250 < 250 8300 < 250 < 250 < 250 < 250 < 2500 < 250 < 250 < 250 < 5000 < 250 450 < 250 < 25011/03/00 TB 13113 6900 < 80 < 80 < 80 < 80 2300 < 80 < 80 < 80 < 80 < 800 < 80 < 80 < 80 < 1600 < 80 < 80 < 80 < 8012/07/00 TB 13363 < 200 J 74 < 100 < 100 < 100 D 6000 < 100 < 100 150 < 100 < 1000 < 100 < 100 < 100 < 2000 < 100 770 < 100 J 94

01/06/01 TB 13532 < 160 < 80 < 80 < 80 < 80 2100 < 80 < 80 < 80 < 80 < 800 < 80 < 80 < 80 < 1600 < 80 200 < 80 < 8002/23/01 TB 13869 460 120 < 5 110 5 D 4000 11 18 230 < 5 < 50 < 5 < 5 14 1800 13 42 100 46703/14/01 TB 14012 3400 J 82 < 100 < 100 < 100 D 4500 < 100 < 100 290 < 100 < 1000 < 100 < 100 < 100 3200 < 100 1000 J 72 J 20004/07/01 TB 14160 < 200 < 100 < 100 < 100 < 100 4000 < 100 < 100 280 < 100 < 1000 < 100 < 100 < 100 < 2000 < 100 780 < 100 J 180

05/09/01 TB 14395 < 200 J 92 < 100 < 100 190 D 6900 < 100 < 100 330 < 100 < 1000 < 100 < 100 < 100 4000 < 100 1300 < 100 J 200

08/24/01 TB 15107 1300 J 79 < 125 J 92 < 125 4700 < 125 < 125 J 78 < 125 < 1250 < 125 < 125 < 125 4300 < 125 480 < 125 J 300

10/14/01 TB 15338 830 < 100 < 100 < 100 280 3700 < 100 < 100 310 < 100 < 1000 < 100 < 100 < 100 5300 < 100 1000 < 100 J 220

11/05/01 TB 15534 1400 < 200 < 200 < 200 620 5600 < 200 < 200 390 < 200 < 2000 < 200 < 200 < 200 12000 < 200 1500 < 200 J 240

12/17/01 TB 15987 480 J 60 < 100 < 100 170 3700 < 100 < 100 250 < 100 < 1000 < 100 < 100 < 100 6800 < 100 830 < 100 J 220

01/08/02 TB 16111 680 J 94 < 100 J 99 380 3100 < 100 < 100 160 < 100 < 1000 < 100 < 100 < 100 18000 < 100 880 880 J 300

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 119 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

PW-036JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: Easement South

02/01/02 TB 16296 390 370 < 100 J 72 260 3400 < 100 < 100 J 70 < 100 < 1000 < 100 < 100 < 100 19000 < 100 920 1400 J 38005/04/02 TB 16913 520 110 < 100 < 100 < 100 3200 < 100 < 100 180 < 100 < 1000 < 100 < 100 < 100 4700 < 100 1000 < 100 46008/30/02 TB 17845 620 J 26 < 100 < 100 < 100 D 5200 < 100 < 100 260 < 100 < 100 < 100 < 100 < 100 12000 < 100 870 < 100 J 26010/18/02 TB 18085 820 J 60 < 100 < 100 < 100 6380 < 100 < 100 280 < 100 < 1000 < 100 < 100 < 100 21700 < 100 1050 < 100 52011/11/02 TB 18192 290 280 < 100 < 100 < 100 4900 < 100 < 100 150 < 100 < 1000 < 100 < 100 < 100 20600 < 100 400 120 460

01/30/03 TB 18550 J 150 350 < 100 < 100 < 100 4600 < 100 < 100 < 100 < 100 < 1000 < 100 < 100 < 100 37000 < 100 170 490 38004/15/03 TB 19123 644 170 < 125 < 125 < 375 6220 < 125 < 125 209 < 125 < 500 < 100 < 125 < 125 10200 < 125 575 < 50 J 19205/06/03 TB 19157 < 125 200 < 125 < 125 < 375 3980 < 125 < 125 < 125 < 125 < 500 < 100 < 125 < 125 7280 < 125 225 275 J 12506/17/03 TB 19399 220 240 < 100 < 100 < 300 3660 < 100 < 100 < 100 < 100 < 400 < 80 < 100 < 100 16100 < 100 180 < 40 J 18007/09/03 TB 19476 360 < 40 < 40 < 40 < 120 2010 < 40 < 40 64 < 40 < 160 < 32 < 40 < 40 2280 < 40 232 J 32 J 56

08/07/03 TB 19553 560 140 < 100 < 100 < 300 4560 < 100 < 100 < 100 < 100 < 400 < 80 < 100 < 100 4220 < 100 340 J 100 300

09/19/03 TB 19836 460 < 100 < 100 < 100 < 300 2960 < 100 < 100 100 < 100 < 400 < 80 < 100 < 100 4840 < 100 420 < 40 J 160

10/10/03 TB 19900 700 < 100 < 100 < 100 < 300 4500 < 100 < 100 200 < 100 < 400 < 80 < 100 < 100 5080 < 100 820 < 40 200

11/07/03 TB 19946 460 < 100 < 100 < 100 < 300 3300 < 100 < 100 300 < 100 < 400 < 80 < 100 < 100 3180 < 100 1040 J 40 240

12/12/03 TB 20171 460 < 100 < 100 < 100 < 300 2960 < 100 < 100 140 < 100 < 400 < 80 < 100 < 100 3900 < 100 620 J 100 J 140

02/06/04 TB 20300 274 40 < 40 < 40 < 120 1540 < 40 < 40 83 < 40 < 160 < 32 < 40 < 40 2500 < 40 340 J 48 J 6904/08/04 TB 20656 477 63 < 40 < 40 J 147 2260 < 40 < 40 216 < 40 < 160 < 32 < 40 < 40 5280 < 40 656 88 19505/19/04 TB 20751 489 54 < 50 < 50 < 150 2390 < 50 < 50 155 < 50 < 200 < 40 < 50 < 50 7640 < 50 506 J 87 13806/25/04 TB 20815 690 < 50 < 50 < 50 J 235 2440 < 50 < 50 361 < 50 < 200 < 40 < 50 < 50 8770 < 50 904 J 41 24109/08/04 TB 21150 260 22 < 20 < 20 < 60 729 < 20 < 20 < 20 < 20 < 80 < 16 < 20 < 20 5120 < 20 71 J 25 63

02/18/05 TB 22123 747 54 < 20 23 < 60 2320 < 20 < 20 91 < 20 < 80 < 16 < 20 < 20 4650 < 20 286 55 27805/17/05 TB 22582 < 80 < 80 < 80 < 80 < 240 2860 < 80 548 91 < 80 < 320 < 64 < 80 < 80 10600 < 80 347 < 32 < 80

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 120 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

PW-037JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: Easement South

09/21/98 TB 05891 5200 440 < 250 1300 1100 D 560000 < 250 450 3700 < 250 < 500 < 500 < 250 < 500 16000 < 250 D 32000 2100 360010/16/98 TB 06156 < 10000 < 500 < 500 J 360 < 2000 D 43000 < 500 < 500 J 150 < 500 < 1000 < 1000 < 500 < 1000 16000 < 500 3000 J 890 < 50011/03/98 TB 06360 < 250000 < 12500 < 12500 < 12500 < 50000 89000 < 12500 < 12500 < 25000 < 12500 < 25000 < 25000 < 12500 < 25000 < 250000 < 12500 J 4400 < 37500 < 1250012/02/98 TB 06841 < 50000 < 2500 < 2500 < 2500 < 10000 37000 < 2500 < 2500 < 5000 < 2500 < 5000 < 5000 < 2500 < 5000 < 50000 < 2500 J 1500 < 7500 < 2500

01/11/99 TB 07198 < 20000 < 1000 < 1000 < 1000 < 4000 27000 < 1000 < 1000 < 2000 < 1000 < 2000 < 2000 < 1000 < 2000 < 20000 < 1000 2600 < 3000 < 100002/16/99 TB 07538 < 5000 < 250 < 250 J 150 < 1000 6100 < 250 < 250 J 81 < 250 < 500 < 500 < 250 < 500 11000 < 250 780 < 750 J 12003/18/99 TB 07791 < 2000 < 100 < 100 J 96 < 400 4000 < 100 < 100 J 58 < 100 < 200 < 200 < 100 < 200 16000 < 100 410 < 300 21804/13/99 TB 08031 < 5000 < 250 < 250 J 68 < 1000 8700 < 250 < 250 < 500 < 250 < 500 < 500 < 250 < 500 13000 < 250 540 J 190 < 25005/17/99 TB 08321 < 5000 < 250 < 250 < 250 < 1000 6000 < 250 < 250 J 61 < 250 < 500 < 500 < 250 < 500 13000 < 250 630 < 750 J 5006/06/99 TB 08588 < 1000 < 50 < 50 < 50 < 200 1700 < 50 < 50 J 16 < 50 < 100 < 100 < 50 < 100 19000 < 50 150 < 150 < 50

07/06/99 TB 08885 1700 90 < 50 220 810 D 15000 < 50 J 21 180 < 50 < 100 < 100 < 50 < 100 D 40000 < 50 1800 180 270

08/09/99 TB 09191 < 50 < 25 < 25 J 10 < 25 D 990 < 25 < 25 J 18 < 25 < 250 < 25 < 25 < 25 560 < 25 240 < 25 J 30

09/09/99 TB 09631 < 50 < 25 < 25 < 25 < 25 760 < 25 < 25 < 25 < 25 < 250 < 25 < 25 < 25 1600 < 25 J 15 < 25 < 2510/18/99 TB 10092 180 < 25 < 25 < 25 < 25 D 2190 < 25 < 25 J 24 < 25 < 250 < 25 < 25 < 25 < 500 < 25 160 < 25 J 51

11/03/99 TB 10317 440 30 < 25 140 85 730 < 25 85 30 < 25 < 250 < 25 < 25 < 25 8600 < 25 270 J 10 12012/21/99 TB 10797 280 < 25 < 25 31 < 25 D 1880 < 25 < 25 49 < 25 < 250 < 25 < 25 < 25 1500 < 25 320 35 J 65

02/09/00 TB 11159 < 100 58 < 50 < 50 < 50 D 2700 < 50 < 50 < 50 < 50 < 500 < 50 < 50 < 50 2360 < 50 600 97 J 9005/22/00 TB 11830 < 10 < 5 < 5 < 5 < 5 13 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 2000 < 5 < 5 < 5 < 507/06/00 TB 12109 < 10 < 5 < 5 < 5 < 5 160 < 5 9 < 5 < 5 < 50 < 5 < 5 < 5 2000 < 5 < 5 < 5 < 508/05/00 TB 12339 < 10 < 5 < 5 < 5 < 5 60 < 5 6 < 5 < 5 < 50 < 5 < 5 < 5 240 < 5 J 4 < 5 J 210/18/00 TB 12842 < 10 7 < 5 8 < 5 660 < 5 6 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 17 J 412/07/00 TB 13364 400 14 < 5 < 5 < 5 3200 < 5 5 40 < 5 < 50 < 5 < 5 < 5 940 < 5 280 15 54

02/23/01 TB 13870 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 2000 < 5 < 5 < 5 < 504/06/01 TB 14158 49 < 5 < 5 < 5 < 5 95 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 1700 < 5 < 5 < 5 J 205/09/01 TB 14396 59 < 5 < 5 < 5 < 5 230 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 1700 < 5 13 < 5 < 508/24/01 TB 15108 97 26 < 5 9 < 5 D 830 < 5 J 3 J 4 < 5 < 50 < 5 < 5 J 3 D 4200 < 5 150 17 5909/11/01 TB 15231 D 280 10 < 5 < 5 < 5 D 1500 < 5 < 5 25 < 5 < 50 < 5 < 5 < 5 D 2200 < 5 130 9 8710/14/01 TB 15339 < 10 < 5 < 5 < 5 < 5 12 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 1800 < 5 < 5 < 5 J 111/05/01 TB 15535 J 6 < 5 < 5 < 5 < 5 J 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 D 3500 < 5 < 5 < 5 J 112/17/01 TB 15988 35 9 < 5 9 < 5 D 380 < 5 7 < 5 < 5 < 50 < 5 < 5 < 5 1300 < 5 9 J 5 20

01/08/02 TB 16112 J 9 < 5 < 5 < 5 < 5 19 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 D 2600 < 5 < 5 < 5 < 502/01/02 TB 16297 J 6 < 5 < 5 < 5 < 5 6 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 1700 < 5 < 5 < 5 < 505/04/02 TB 16914 52 J 4 < 5 < 5 < 5 D 440 < 5 < 5 J 5 < 5 < 50 < 5 < 5 < 5 1300 < 5 21 J 3 17

08/30/02 TB 17846 160 8 < 5 < 5 18 D 730 < 5 < 5 21 < 5 < 50 < 5 < 5 < 5 2400 < 5 64 J 5 33

10/18/02 TB 18086 37 J 4 < 5 < 5 < 5 87 < 5 < 5 J 5 < 5 < 50 < 5 < 5 < 5 850 < 5 9 < 5 J 911/11/02 TB 18193 J 8 < 5 < 5 < 5 < 5 53 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 1100 < 5 6 < 5 < 5

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 121 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

PW-037JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: Easement South

01/23/03 TB 18519 J 5 J 5 < 5 < 5 < 5 11 < 5 < 5 J 1 < 5 < 50 < 5 < 5 < 5 730 < 5 J 2 < 5 J 201/30/03 TB 18551 10 6 < 5 < 5 < 5 110 < 5 < 5 10 < 5 < 50 < 5 < 5 < 5 2400 < 5 30 < 5 J 1104/15/03 TB 19124 41 7 < 5 7 < 15 480 < 5 < 5 8 < 5 < 20 < 4 < 5 < 5 1370 < 5 37 J 4 1205/06/03 TB 19158 < 5 5 < 5 < 5 < 15 23 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 1200 < 5 < 5 J 2 < 506/17/03 TB 19400 13 < 5 < 5 < 5 < 15 16 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 883 < 5 < 5 < 2 < 507/09/03 TB 19477 < 5 < 5 < 5 < 5 < 15 11 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 664 < 5 < 5 < 2 < 508/07/03 TB 19554 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 1070 < 5 < 5 < 2 < 509/19/03 TB 19837 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 1340 < 5 < 5 < 2 < 510/10/03 TB 19901 23 < 5 < 5 < 5 < 15 130 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 1060 < 5 6 < 2 J 311/07/03 TB 19947 13 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 904 < 5 < 5 < 2 < 5

12/12/03 TB 20172 5 < 5 < 5 < 5 < 15 22 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 1340 < 5 < 5 < 2 < 5

02/06/04 TB 20301 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 356 < 5 < 5 < 2 < 504/08/04 TB 20657 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 839 < 5 < 5 < 2 < 509/08/04 TB 21151 < 5 < 5 < 5 < 5 < 15 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 1130 < 5 < 5 < 2 < 5

02/18/05 TB 22124 9 < 5 < 5 < 5 < 15 16 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 861 < 5 < 5 < 2 < 505/17/05 TB 22583 315 < 10 < 10 < 10 < 30 434 < 10 < 10 < 10 < 10 < 40 < 8 < 10 < 10 1170 < 10 < 10 < 4 54

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 122 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

PW-039JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: Easement South

09/09/98 TB 05821 < 500 J 140 < 250 3700 3800 45000 J 120 830 < 500 < 250 750 < 500 < 250 < 500 82000 < 250 J 240 J 110 5810/16/98 TB 06157 < 20000 < 1000 < 1000 J 690 < 4000 10000 < 1000 < 1000 < 2000 < 1000 < 2000 < 2000 < 1000 < 2000 22000 < 1000 J 300 < 3000 < 100011/03/98 TB 06361 < 2500 < 125 < 125 390 < 500 6400 < 125 J 87 J 26 < 125 < 250 < 250 < 125 < 250 10000 < 125 J 210 < 375 J 9012/02/98 TB 06842 J 13 < 25 < 25 170 < 100 D 1100 < 25 46 J 19 < 25 < 50 < 50 < 25 < 50 6700 < 25 57 < 75 J 84

01/11/99 TB 07199 < 1000 < 50 < 50 D 280 < 200 D 3700 < 50 80 J 61 < 50 < 100 < 100 < 50 < 100 6100 < 50 210 < 150 31002/16/99 TB 07539 < 1000 < 50 < 50 100 320 120 < 50 < 50 J 16 < 50 < 100 < 100 < 50 < 100 7000 < 50 < 100 < 150 J 1604/13/99 TB 08032 < 1000 62 < 50 330 D 1200 D 4500 J 22 210 < 100 J 18 190 < 100 < 50 < 100 D 55000 < 50 J 28 180 13005/17/99 TB 08322 < 100 < 5 < 5 26 < 20 7 < 5 7 < 10 < 5 < 10 < 10 < 5 < 10 3900 < 5 < 10 < 15 < 508/09/99 TB 09192 < 10 < 5 < 5 36 < 5 13 < 5 6 < 5 < 5 < 50 < 5 < 5 < 5 D 5800 < 5 < 5 < 5 < 510/18/99 TB 10093 < 10 < 5 < 5 6 < 5 9 < 5 < 5 J 5 < 5 < 50 < 5 < 5 < 5 D 4300 < 5 < 5 < 5 < 5

11/03/99 TB 10318 < 10 < 5 < 5 11 < 5 11 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 D 11000 < 5 < 5 < 5 < 512/21/99 TB 10798 < 10 < 5 < 5 17 44 58 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 D 13700 < 5 < 5 < 5 < 5

02/09/00 TB 11160 < 10 7 < 5 26 < 5 130 < 5 22 < 5 < 5 < 50 < 5 < 5 < 5 D 5500 < 5 < 5 8 J 2

04/08/00 TB 11537 < 10 < 5 < 5 J 4 < 5 J 2 < 5 J 2 < 5 < 5 < 50 < 5 < 5 < 5 D 4300 < 5 < 5 < 5 < 505/22/00 TB 11831 < 10 < 5 < 5 < 5 < 5 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 D 2700 < 5 < 5 < 5 < 507/06/00 TB 12110 < 10 < 5 < 5 7 < 5 9 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 1700 < 5 < 5 < 5 < 510/18/00 TB 12843 < 10 < 5 < 5 15 < 5 64 < 5 7 < 5 < 5 < 50 < 5 < 5 < 5 2300 < 5 < 5 < 5 < 511/03/00 TB 13114 160 < 13 < 13 27 < 13 590 < 13 19 < 13 < 13 < 125 < 13 < 13 < 13 < 250 < 13 < 13 < 13 < 13

01/06/01 TB 13533 < 800 510 < 400 < 400 < 400 D 100000 < 400 < 400 < 400 < 400 < 4000 < 400 < 400 < 400 < 8000 < 400 < 400 < 400 < 40002/23/01 TB 13871 2700 < 250 < 250 < 250 4400 D 33000 < 250 < 250 < 250 < 250 J 1100 < 250 < 250 < 250 86000 < 250 < 250 < 250 < 25003/14/01 TB 14013 4000 310 < 250 < 250 1400 D 57000 < 250 < 250 < 250 < 250 J 340 < 250 < 250 < 250 38000 < 250 < 250 < 250 < 25004/06/01 TB 14159 < 5000 < 2500 < 2500 < 2500 < 2500 97000 < 2500 < 2500 < 2500 < 2500 < 25000 < 2500 < 2500 < 2500 < 50000 < 2500 < 2500 < 2500 < 250005/09/01 TB 14397 520000 < 2500 < 2500 < 2500 < 2500 85000 < 2500 < 2500 < 2500 < 2500 < 25000 < 2500 < 2500 < 2500 J 49000 < 2500 < 2500 < 2500 < 250006/03/01 TB 14579 11000 < 1250 < 1250 < 1250 < 1250 43000 < 1250 < 1250 < 1250 < 1250 < 12500 < 1250 < 1250 < 1250 28000 < 1250 < 1250 < 1250 < 125007/02/01 TB 14689 < 160 < 80 < 80 < 80 200 2700 < 80 < 80 < 80 < 80 < 800 < 80 < 80 < 80 D 270000 < 80 < 80 < 80 < 8007/11/01 TB 14745 < 160 < 80 < 80 < 80 < 80 250 < 80 < 80 < 80 < 80 < 800 < 80 < 80 < 80 2500 < 80 < 80 < 80 < 8007/19/01 TB 14804 < 10 6 < 5 26 < 5 < 5 < 5 23 < 5 < 5 < 50 < 5 < 5 < 5 210 < 5 < 5 < 5 < 507/25/01 TB 14823 < 10 11 < 5 22 < 5 J 3 < 5 13 < 5 < 5 < 50 < 5 < 5 < 5 130 < 5 < 5 8 < 508/24/01 TB 15109 1300 < 100 < 100 180 < 100 2800 < 100 140 < 100 < 100 < 1000 < 100 < 100 < 100 27000 < 100 < 100 J 64 < 10009/05/01 TB 15197 < 40 < 20 < 20 27 < 20 460 < 20 23 < 20 < 20 < 200 < 20 < 20 < 20 1800 < 20 < 20 < 20 J 409/11/01 TB 15232 < 50 < 25 < 25 < 25 < 25 730 < 25 < 25 < 25 < 25 < 250 < 25 < 25 < 25 1400 < 25 < 25 < 25 < 25

10/14/01 TB 15340 69 220 < 5 D 2600 D 870 D 55000 220 D 1500 27 216 79 9 < 5 37 D 29000 6 97 D 290 149

11/05/01 TB 15536 < 200 < 100 < 100 110 590 2400 < 100 J 94 < 100 < 100 < 1000 < 100 < 100 < 100 15000 < 100 < 100 < 100 < 10012/17/01 TB 15989 < 250 < 125 < 125 < 125 300 4600 < 125 < 125 < 125 < 125 < 1250 < 125 < 125 < 125 7900 < 125 < 125 < 125 < 125

01/08/02 TB 16113 < 200 < 100 < 100 < 100 360 3100 < 100 < 100 < 100 < 100 < 1000 < 100 < 100 < 100 7900 < 100 < 100 < 100 < 10002/01/02 TB 16298 < 100 < 50 < 50 < 50 < 50 1200 < 50 < 50 < 50 < 50 < 500 < 50 < 50 < 50 2200 < 50 < 50 J 26 < 5004/01/02 TB 16771 98 J 7 < 10 J 10 < 10 340 < 10 J 3 < 10 < 10 < 100 < 10 < 10 < 10 D 7200 < 10 < 10 J 4 < 10

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 123 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

PW-039JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: Easement South

05/04/02 TB 16915 < 50 < 25 < 25 < 25 < 25 700 < 25 < 25 < 25 < 25 < 250 < 25 < 25 < 25 8900 < 25 < 25 < 25 < 2506/18/02 TB 17346 89 < 10 < 10 10 < 10 230 < 10 < 10 < 10 < 10 < 100 < 10 < 10 < 10 D 7500 < 10 < 10 < 10 < 1009/06/02 TB 17876 200 J 2 < 5 J 1 7 120 < 5 J 2 < 5 < 5 < 50 J 1 < 5 < 5 D 7400 < 5 < 5 < 5 < 511/11/02 TB 18194 < 40 < 20 < 20 < 20 < 20 J 12 < 20 < 20 < 20 < 20 < 200 < 20 < 20 < 20 4320 < 20 < 20 < 20 < 20

01/23/03 TB 18520 J 3 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 1900 < 5 < 5 < 5 < 501/30/03 TB 18552 < 40 < 20 < 20 < 20 < 20 540 < 20 < 20 < 20 < 20 < 200 < 20 < 20 < 20 D 6000 < 20 < 20 < 20 < 2004/15/03 TB 19125 39 < 25 < 25 < 25 200 658 < 25 < 25 < 25 < 25 < 100 < 20 < 25 < 25 19100 < 25 < 25 < 10 < 2505/06/03 TB 19159 < 5 < 5 < 5 < 5 < 15 31 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 2710 < 5 < 5 < 2 < 506/17/03 TB 19401 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 788 < 5 < 5 < 2 < 507/09/03 TB 19478 8 < 5 < 5 < 5 J 15 162 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 3640 < 5 < 5 < 2 < 5

08/07/03 TB 19555 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 494 < 5 < 5 < 2 < 509/19/03 TB 19838 < 5 < 5 < 5 < 5 < 15 66 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 2280 < 5 < 5 < 2 < 510/10/03 TB 19902 36 < 10 < 10 < 10 < 30 540 < 10 < 10 < 10 < 10 < 40 < 8 < 10 < 10 10700 < 10 16 < 4 J 4

11/07/03 TB 19948 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 1380 < 5 < 5 < 2 < 512/12/03 TB 20173 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 729 < 5 < 5 < 2 < 5

02/06/04 TB 20302 < 5 < 5 < 5 < 5 < 15 9 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 3710 < 5 < 5 < 2 < 504/08/04 TB 20658 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 1710 < 5 < 5 < 2 < 505/19/04 TB 20752 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 1260 < 5 < 5 < 2 < 506/25/04 TB 20816 < 5 < 5 < 5 < 5 < 15 10 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 8340 < 5 < 5 < 2 < 507/20/04 TB 20861 < 5 < 5 < 5 < 5 < 15 14 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 5580 < 5 < 5 < 2 < 509/07/04 TB 21120 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 8240 < 5 < 5 < 2 < 5

02/25/05 TB 22200 < 1000 < 1000 < 1000 < 1000 < 3000 35600 < 1000 < 1000 < 1000 < 1000 < 4000 < 800 < 1000 < 1000 21500 < 1000 < 1000 < 400 < 100004/12/05 TB 22350 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 4210 < 5 < 5 < 2 < 5

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 124 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

MW-032JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: Far West Road

06/23/99 TB 08768 < 100 < 5 < 5 < 5 < 20 < 5 < 5 < 5 < 10 < 5 < 10 < 10 < 5 < 10 < 100 < 5 < 10 < 15 < 508/05/99 TB 09156 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 509/11/99 TB 09668 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 511/18/99 TB 10525 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 5

02/08/00 TB 11145 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 504/30/00 TB 11612 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 510/23/00 TB 12902 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 5

02/04/01 TB 13720 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 508/10/01 TB 14910 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 5

02/13/02 TB 16420 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 505/28/02 TB 17148 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 508/28/02 TB 17804 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 5

03/04/03 TB 18889 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 508/13/03 TB 19618 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

02/22/05 TB 22170 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 775 < 5 < 5 < 2 < 505/17/05 TB 22531 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 125 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

MW-033JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: Far West Road

09/30/97 TB 02931 < 5 < 5 < 5 < 10 < 5 < 5 < 5 J 4 < 10 < 5 E 25000 < 5 < 5 < 10 < 5

02/01/99 TB 07347 < 100 < 5 < 5 < 5 < 20 < 5 < 5 < 5 < 10 < 5 < 10 J 6 < 5 < 10 44000 < 5 < 10 < 15 < 506/23/99 TB 08769 < 100 < 5 < 5 < 5 < 20 < 5 < 5 < 5 < 10 < 5 < 10 < 10 < 5 < 10 D 8900 < 5 < 10 < 15 < 508/05/99 TB 09157 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 6000 < 5 < 5 < 5 < 511/18/99 TB 10526 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 620 < 5 < 5 < 5 < 5

04/30/00 TB 11613 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 J 4 < 5 < 5 D 22000 < 5 < 5 < 5 < 510/23/00 TB 12903 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 D 4600 < 5 < 5 < 5 < 5

02/04/01 TB 13721 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 D 43000 < 5 < 5 < 5 < 508/10/01 TB 14911 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 J 4 < 5 < 5 E 3900 < 5 < 5 < 5 < 5

02/13/02 TB 16421 < 10 < 5 < 5 < 5 < 5 J 1 < 5 < 5 < 5 < 5 < 50 J 5 < 5 < 5 D 5800 < 5 < 5 < 5 < 505/28/02 TB 17149 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 J 4 < 5 < 5 490 < 5 < 5 < 5 < 509/03/02 TB 17856 J 3 < 5 < 5 < 5 < 5 J 3 < 5 < 5 < 5 < 5 < 50 J 5 < 5 < 5 160 < 5 < 5 < 5 < 5

03/04/03 TB 18881 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 J 4 < 5 < 5 340 < 5 < 5 < 5 < 508/13/03 TB 19619 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

04/13/04 TB 20682 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 505/11/04 TB 20715 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 506/22/04 TB 20790 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 507/23/04 TB 20889 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

02/22/05 TB 22171 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 588 < 5 < 5 < 2 < 505/17/05 TB 22532 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 126 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

MW-107JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: Far West Road

08/01/00 TB 12275 < 10 5 < 5 J 4 < 5 < 5 < 5 7 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 510/25/00 TB 12958 < 10 7 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 5

02/08/01 TB 13756 < 10 6 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 508/11/01 TB 14927 < 10 8 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 5

02/13/02 TB 16427 < 10 6 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 505/23/02 TB 17116 < 10 7 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 508/28/02 TB 17805 < 10 6 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 J 14 < 5 < 5 < 5 < 5

03/06/03 TB 18924 < 10 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 508/12/03 TB 19590 < 5 9 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

03/02/04 TB 20561 < 5 12 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 509/02/04 TB 21095 < 5 9 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

02/10/05 TB 21973 < 5 9 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 505/17/05 TB 22545 < 5 8 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 127 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

MW-108JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: Far West Road

08/01/00 TB 12276 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 510/25/00 TB 12959 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 5

02/08/01 TB 13757 < 10 7 < 5 < 5 < 5 < 5 < 5 J 3 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 508/11/01 TB 14928 < 10 89 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 5

02/13/02 TB 16428 < 10 9 < 5 < 5 < 5 < 5 < 5 J 3 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 505/23/02 TB 17117 < 10 9 < 5 < 5 < 5 < 5 < 5 J 3 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 508/28/02 TB 17806 < 10 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 J 10 < 5 < 5 < 5 < 5

03/06/03 TB 18925 < 10 8 < 5 < 5 < 5 < 5 < 5 J 2 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 508/12/03 TB 19591 < 5 6 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

03/02/04 TB 20562 < 5 7 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 509/02/04 TB 21096 < 5 6 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

02/10/05 TB 21974 < 5 7 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 505/17/05 TB 22546 < 5 6 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 2840 < 5 < 5 < 2 < 5

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 128 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

MW-109JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: Far West Road

08/01/00 TB 12277 < 10 < 5 < 5 < 5 < 5 D 9100 < 5 < 5 15 < 5 < 50 < 5 < 5 < 5 < 100 < 5 D 1750 < 5 9410/25/00 TB 12960 < 500 < 250 < 250 < 250 < 250 11000 < 250 < 250 < 250 < 250 < 2500 < 250 < 250 < 250 < 5000 < 250 1200 < 250 < 250

02/08/01 TB 13758 < 500 < 250 < 250 < 250 < 250 11000 < 250 < 250 < 250 < 250 < 2500 < 250 < 250 < 250 < 5000 < 250 J 130 J 110 < 25008/11/01 TB 14929 < 500 < 250 < 250 < 250 < 250 8300 < 250 < 250 < 250 < 250 < 2500 < 250 < 250 < 250 < 5000 < 250 290 < 250 < 250

02/13/02 TB 16429 J 200 < 250 < 250 < 250 < 250 D 13000 < 250 < 250 J 83 < 250 < 2500 < 250 < 250 < 250 < 5000 < 250 350 < 250 J 10005/23/02 TB 17118 J 180 < 250 < 250 < 250 < 250 9400 < 250 < 250 < 250 < 250 < 2500 < 250 < 250 < 250 < 5000 < 250 < 250 < 250 J 10008/28/02 TB 17807 J 150 < 250 < 250 < 250 < 250 6000 < 250 < 250 J 54 < 250 < 2500 < 250 < 250 < 250 J 440 < 250 J 52 < 250 J 50

03/11/03 TB 18981 < 200 < 200 < 200 < 200 < 200 7400 < 200 < 200 J 55 < 200 < 2000 < 200 < 200 < 200 < 4000 < 200 J 56 < 200 J 8008/12/03 TB 19592 128 < 80 < 80 < 80 < 240 2450 < 80 < 80 < 80 < 80 < 320 < 64 < 80 < 80 < 800 < 80 < 80 < 32 < 80

03/02/04 TB 20563 < 80 < 80 < 80 < 80 < 240 2790 < 80 < 80 < 80 < 80 < 320 < 64 < 80 < 80 < 800 < 80 < 80 < 32 < 8007/23/04 TB 20890 85 < 80 < 80 < 80 < 240 3390 < 80 < 80 < 80 < 80 < 320 < 64 < 80 < 80 < 800 < 80 < 80 < 32 < 8009/02/04 TB 21097 106 < 80 < 80 < 80 < 240 3000 < 80 < 80 < 80 < 80 < 320 < 64 < 80 < 80 < 800 < 80 < 80 < 32 < 80

02/10/05 TB 21975 79 < 40 < 40 < 40 < 120 1510 < 40 < 40 < 40 < 40 < 160 < 32 < 40 < 40 < 400 < 40 < 40 < 16 < 4005/17/05 TB 22547 82 < 50 < 50 < 50 < 150 2380 < 50 < 50 < 50 < 50 < 200 < 40 < 50 < 50 < 500 < 50 < 50 < 20 < 50

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 129 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

MW-110JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: Far West Road

08/01/00 TB 12278 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 510/25/00 TB 12961 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 5

02/04/01 TB 13723 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 508/10/01 TB 14920 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 910 < 5 < 5 < 5 < 511/16/01 TB 15688 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 5

02/13/02 TB 16430 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 505/23/02 TB 17119 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 508/28/02 TB 17808 < 10 J 2 < 5 < 5 < 5 D 310 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 J 15 < 5 < 5 < 5 J 1

03/04/03 TB 18882 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 5

08/13/03 TB 19622 < 5 6 < 5 < 5 < 15 192 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

03/02/04 TB 20564 < 5 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 509/02/04 TB 21098 < 5 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

02/10/05 TB 21976 < 5 7 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 505/17/05 TB 22548 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 646 < 5 < 5 < 2 < 5

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 130 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

BS-003JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: Main Waste

02/26/04 TB 20510 2750 3370 < 1250 2110 J 99200 13900 < 1250 < 1250 < 1250 1300 22600 < 1000 < 1250 < 1250 6130000 < 1250 1800 < 500 < 125008/24/04 TB 20943 4620 6910 < 1250 4560 J 141000 24800 < 1250 < 1250 < 1250 2200 31400 < 1000 < 1250 < 1250 8580000 < 1250 5170 4570 J 545

02/08/05 TB 21920 4620 2080 < 1000 1010 38000 11200 < 1000 < 1000 < 1000 < 1000 8930 < 800 < 1000 < 1000 4250000 < 1000 3300 J 1070 J 57605/17/05 TB 22540 2600 4550 < 1000 2400 110000 18300 < 1000 < 1000 < 1000 J 1690 19000 < 800 < 1000 < 1000 5180000 < 1000 3900 3070 J 412

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 131 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

BS-005JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: Main Waste

02/21/03 TB 18740 1500 2200 < 200 < 200 960 6100 < 200 < 200 J 110 < 200 J 440 < 200 < 200 J 67 D 510000 < 200 1300 < 200 J 20005/12/03 TB 19244 229 922 < 50 116 < 150 1010 < 50 < 50 < 50 < 50 < 200 < 40 < 50 < 50 302000 < 50 365 J 28 122

02/26/04 TB 20512 351 2250 < 20 34 < 60 663 < 20 < 20 21 < 20 < 80 J 39 < 20 < 20 360000 < 20 173 < 8 8108/24/04 TB 20945 572 < 20 < 20 73 J 73 4340 < 20 < 20 31 < 20 < 80 57 < 20 < 20 595000 < 20 844 < 8 147

02/08/05 TB 21922 283 498 24 52 < 60 957 < 20 < 20 < 20 < 20 < 80 J 23 < 20 < 20 298000 < 20 90 J 38 6305/17/05 TB 22541 602 23 < 20 69 < 60 1360 < 20 < 20 < 20 < 20 < 80 41 < 20 < 20 532000 < 20 252 < 8 84

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 132 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

BW-002JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: Main Waste

02/12/97 TB 01664 400 < 250 < 250 < 500 6100 < 250 J 220 J 160 < 500 < 250 E 25000 < 250 260 < 500 J 22006/09/97 TB 02290 300 < 250 < 250 < 500 < 250 < 250 450 < 250 < 500 < 250 27000 < 250 530 < 500 39006/29/97 TB 02362 J 290 < 500 < 500 < 1000 9000 < 500 620 < 500 < 1000 < 500 E 21000 < 500 1800 < 1000 93009/05/97 TB 02747 160 < 120 < 120 < 250 2200 < 120 J 68 < 120 < 250 < 120 12000 < 120 190 < 250 23012/13/97 TB 03464 58 < 25 J 23 < 100 430 < 25 < 25 J 16 < 25 J 18 < 50 < 25 < 50 < 25 J 16 < 75 J 28

09/10/98 TB 05782 J 10 32 < 10 22 < 40 90 < 10 < 10 J 6 < 10 < 20 < 20 < 10 < 20 8000 < 10 23 < 30 31

01/04/99 TB 07126 J 8 19 < 5 16 < 20 13 < 5 J 2 < 10 < 5 < 10 < 10 < 5 < 10 5700 < 5 J 5 < 15 1902/04/99 TB 07388 < 100 150 < 5 72 30 D 1200 5 27 32 < 5 < 10 < 10 J 3 J 3 D 34000 J 4 390 24 53005/11/99 TB 08265 < 100 45 < 5 19 < 20 120 < 5 < 5 J 6 < 5 < 10 < 10 < 5 < 10 D 6200 < 5 23 < 15

08/14/99 TB 09266 < 10 58 < 5 26 19 120 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 D 18000 < 5 20 < 5 72

11/12/99 TB 10441 < 10 20 < 5 J 5 < 5 16 < 5 < 5 J 2 < 5 < 50 < 5 < 5 < 5 D 6600 < 5 J 3 < 5 42

02/05/00 TB 11113 < 40 < 20 < 20 < 20 < 20 < 20 < 20 < 20 < 20 < 20 < 200 < 20 < 20 < 20 3200 < 20 < 20 < 20 < 2008/03/00 TB 12304 < 10 13 < 5 9 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 D 4200 < 5 < 5 < 5 < 510/13/00 TB 12792 < 10 14 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 D 5800 < 5 < 5 < 5 J 1

02/28/01 TB 13939 < 10 J 4 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 2200 < 5 < 5 < 5 J 104/30/01 TB 14265 < 10 7 < 5 7 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 D 2700 < 5 < 5 < 5 < 508/16/01 TB 14976 < 10 5 < 5 J 3 < 5 J 2 < 5 < 5 < 5 < 5 < 50 5 < 5 < 5 E 3800 < 5 < 5 < 5 < 511/09/01 TB 15578 < 10 7 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 J 4 < 5 < 5 D 5800 < 5 < 5 < 5 J 1

03/05/02 TB 16628 < 10 J 4 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 D 2600 < 5 < 5 < 5 < 505/07/02 TB 16918 < 10 J 4 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 J 4 < 5 < 5 D 6400 < 5 < 5 < 5 < 5

02/27/03 TB 18822 < 10 J 2 < 5 J 2 < 5 < 5 < 5 < 5 < 5 < 5 < 50 5 < 5 < 5 D 2800 < 5 < 5 < 5 < 5

08/26/04 TB 20971 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 148 < 5 < 5 < 2 < 510/14/04 TB 21288 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 237 < 5 < 5 < 2 < 511/18/04 TB 21484 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 601 < 5 < 5 < 2 < 512/07/04 TB 21541 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 J 6 < 5 < 5 2310 < 5 < 5 < 2 < 5

01/20/05 TB 21858 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 390 < 5 < 5 < 2 < 502/09/05 TB 21930 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 J 4 < 5 < 5 941 < 5 < 5 < 2 < 504/13/05 TB 22358 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 J 4 < 5 < 5 65 < 5 < 5 < 2 < 5

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 133 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

BW-004JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: Main Waste

02/13/97 TB 01666 33 < 5 66 200 170 18 120 J 4 < 10 J 2 6000 < 5 220 < 10 27005/08/97 TB 02133 < 10 200 < 5 57 < 10 150 5 < 5 < 5 < 10 < 5 E 6200 < 5 J 3 45 906/08/97 TB 02279 540 < 25 < 25 < 50 960 < 25 < 25 < 25 < 50 < 25 E 11000 < 25 J 19 150 J 2306/29/97 TB 02364 530 < 25 140 < 50 570 J 19 < 25 < 25 < 50 < 25 E 14000 < 25 J 10 100 J 1708/07/97 TB 02523 440 < 25 110 B 48 110 J 19 < 25 B 18 < 50 < 25 < 250 < 25 < 25 120 < 2511/07/97 TB 03232 260 < 10 68 < 20 28 16 < 10 < 10 < 20 < 10 11000 < 10 < 10 42 < 10

02/12/98 TB 03780 180 < 5 67 < 10 34 10 < 5 < 5 < 10 < 5 E 11000 < 5 J 4 23 J 3

03/05/02 TB 16630 < 10 27 < 5 26 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 2200 < 5 < 5 < 5 < 5

02/27/03 TB 18824 < 10 23 < 5 25 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 210 < 5 < 5 < 5 < 5

08/26/04 TB 20972 < 5 7 < 5 7 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 510/14/04 TB 21289 < 5 13 < 5 17 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 118 < 5 < 5 < 2 < 511/18/04 TB 21485 < 5 13 < 5 26 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 496 < 5 < 5 < 2 < 512/07/04 TB 21542 < 5 14 < 5 33 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 1160 < 5 < 5 < 2 < 5

01/19/05 TB 21847 < 5 8 < 5 16 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 342 < 5 < 5 < 2 < 502/09/05 TB 21931 < 5 7 < 5 16 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 949 < 5 < 5 < 2 < 504/13/05 TB 22359 < 5 6 < 5 18 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 1250 < 5 < 5 < 2 < 5

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 134 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

BW-006JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: Main Waste

02/08/97 TB 01641 460 < 50 150 < 100 400 20 < 50 < 50 < 100 < 50 6100 < 50 23 80 1405/08/97 TB 02154 < 10 160 < 5 63 < 10 30 15 < 5 J 2 < 10 < 5 E 970 J 3 12 36 1406/09/97 TB 02303 390 < 12 140 < 25 290 28 < 12 < 12 < 25 J 8 1700 J 9 29 99 3806/30/97 TB 02402 300 < 12 96 < 25 310 19 < 12 < 12 < 25 < 12 E 2000 < 12 25 67 2910/08/97 TB 02972 450 < 25 120 J 34 89 33 < 25 < 25 < 50 J 11 E 5600 < 25 < 25 J 48 < 25

01/17/98 TB 03652 E 200 < 5 51 < 20 30 5 < 5 < 10 < 5 J 8 < 10 J 4 12 J 3 < 10 17 < 5

08/30/04 TB 21023 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 510/14/04 TB 21290 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 511/22/04 TB 21501 < 5 129 < 5 50 < 15 23 < 5 19 < 5 < 5 < 20 < 4 < 5 5 2080 < 5 < 5 13 < 5

12/07/04 TB 21543 < 5 117 < 5 54 < 15 15 < 5 17 < 5 < 5 < 20 < 4 < 5 < 5 2150 < 5 < 5 10 < 5

01/19/05 TB 21848 < 5 135 < 5 40 < 15 < 5 < 5 12 < 5 < 5 < 20 < 4 < 5 < 5 739 < 5 < 5 J 6 < 502/04/05 TB 21904 < 5 135 < 5 38 < 15 < 5 < 5 8 < 5 < 5 < 20 < 4 < 5 < 5 1370 < 5 < 5 J 4 < 505/06/05 TB 22457 < 5 245 < 5 57 < 15 < 5 5 < 5 < 5 < 5 < 20 < 4 < 5 5 12200 < 5 < 5 10 < 5

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 135 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

BW-010JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: Main Waste

02/24/97 TB 01776 2200 < 250 < 250 1300 6500 300 J 120 J 140 < 500 < 250 E 34000 < 250 1700 2500 26005/08/97 TB 02146 1100 2000 < 250 < 250 < 500 6500 250 J 110 < 250 < 500 < 250 < 2500 < 250 1400 1500 J 20006/09/97 TB 02293 2400 < 250 < 250 1400 8500 290 J 220 < 250 J 170 < 250 E 95000 < 250 1900 2100 59006/29/97 TB 02369 1800 < 500 < 500 < 1000 6000 < 500 < 500 < 500 < 1000 < 500 E 59000 < 500 < 500 2200 < 50008/07/97 TB 02525 2700 < 500 < 500 < 1000 9100 J 320 < 500 < 500 < 1000 < 500 52000 < 500 1400 4200 J 27009/26/97 TB 02896 3100 < 500 1100 1100 11000 J 450 590 < 500 < 1000 < 500 49000 < 500 3900 2800 130010/01/97 TB 02935 5300 < 1200 2200 < 2500 20000 J 990 1300 B 640 < 2500 < 1200 < 12000 < 1200 10000 3300 310011/07/97 TB 03226 1900 < 250 < 250 B 770 6200 J 200 J 150 < 250 < 500 < 250 E 90000 < 250 1100 2500 410

02/12/98 TB 03782 2900 < 500 < 500 < 1000 10000 J 340 < 500 < 500 < 1000 < 500 < 5000 < 500 2200 2600 J 42003/06/98 TB 03913 13000 < 1200 3100 10000 38000 2000 < 1200 < 1200 < 2500 < 1200 E 100000 < 1200 9700 6900 2200

05/11/98 TB 04528 < 250 3000 < 250 1200 J 400 8900 J 190 < 250 < 250 < 500 < 250 E 100000 < 250 1000 3400 J 220

06/03/98 TB 04680 2400 < 500 760 J 290 6500 < 500 J 250 < 1000 < 500 < 1000 < 1000 < 500 < 1000 48000 < 500 J 980 2600 < 50007/08/98 TB 04967 3000 2800 < 100 1200 1200 D 7300 190 370 J 110 < 100 J 200 < 200 < 100 J 150 D 77000 < 100 2100 1500 480

10/08/98 TB 06102 J 450 < 250 < 250 < 250 < 1000 5200 < 250 < 250 < 500 < 250 < 500 < 500 < 250 < 500 < 5000 < 250 700 < 750 J 120

11/05/98 TB 06419 < 5000 600 < 250 J 220 < 1000 2200 < 250 < 250 < 500 < 250 < 500 < 500 < 250 < 500 41000 < 250 J 390 J 330 < 25012/02/98 TB 06848 < 5000 450 < 250 J 200 < 1000 1400 < 250 < 250 < 500 < 250 < 500 < 500 < 250 < 500 8400 < 250 J 240 J 150 < 250

01/04/99 TB 07127 J 180 580 < 50 200 430 1600 J 38 66 J 25 < 50 < 100 < 100 < 50 J 34 16000 < 50 330 220 J 12002/01/99 TB 07350 < 5000 540 < 250 J 240 < 1000 1800 < 250 J 63 < 500 < 250 < 500 < 500 < 250 < 500 16000 < 250 J 400 J 170 < 25005/11/99 TB 08266 < 5000 2100 < 250 790 7300 7400 < 250 290 J 62 < 250 < 500 < 500 < 250 < 500 D 410000 < 250 1900 110008/12/99 TB 09226 < 500 410 < 40 130 170 1400 17 30 < 40 < 40 < 80 < 40 < 40 22 10000 < 40 210 120 < 4010/07/99 TB 10004 J 81 330 < 50 130 380 1100 J 16 J 31 J 12 < 50 < 500 < 50 < 50 < 50 10000 < 50 250 130 J 5011/11/99 TB 10427 390 460 < 50 140 < 50 2120 < 50 55 < 50 < 50 < 500 < 50 < 50 < 50 5560 < 50 710 130 J 11012/04/99 TB 10627 450 670 < 50 280 400 D 2300 < 50 51 J 48 < 50 < 500 < 50 < 50 < 50 19000 < 50 660 130 170

01/06/00 TB 10869 220 350 < 40 170 330 1700 < 40 44 < 40 < 40 < 400 < 40 < 40 < 40 14000 < 40 480 66 J 4402/04/00 TB 11097 170 240 < 40 120 260 1140 < 40 J 32 40 < 40 < 400 < 40 < 40 < 40 7550 < 40 520 48 J 10003/04/00 TB 11302 < 100 200 < 50 110 < 50 1000 < 50 J 34 J 32 < 50 < 500 < 50 < 50 < 50 6700 < 50 510 J 36 J 5204/06/00 TB 11499 < 100 250 < 50 110 310 1200 < 50 < 50 J 41 < 50 < 500 < 50 < 50 < 50 11000 < 50 520 J 47 J 11005/06/00 TB 11684 < 40 100 < 20 57 < 20 460 < 20 J 11 J 13 < 20 < 200 < 20 < 20 < 20 6720 < 20 220 23 J 1907/06/00 TB 12096 < 40 120 < 20 96 < 20 780 < 20 21 51 < 20 < 200 < 20 < 20 < 20 8400 < 20 650 < 20 11008/03/00 TB 12306 160 120 < 20 85 120 750 < 20 20 24 < 20 < 200 < 20 < 20 < 20 D 1900 < 20 490 J 20 J 6010/10/00 TB 12751 84 D 230 < 5 98 < 5 D 970 12 29 46 < 5 < 50 < 5 6 8 D 15000 5 D 510 57 120

11/03/00 TB 13106 < 40 140 < 20 < 20 < 20 730 < 20 < 20 45 < 20 < 200 < 20 < 20 < 20 3600 < 20 570 < 20 120

02/14/01 TB 13790 < 20 79 < 10 36 24 400 < 10 < 10 57 < 10 < 100 < 10 12 < 10 2700 < 10 540 18 234

05/01/01 TB 14274 150 71 < 10 24 76 240 < 10 < 10 22 < 10 J 15 < 10 < 10 < 10 3100 < 10 220 10 66

08/16/01 TB 14978 83 100 < 20 43 150 420 < 20 < 20 31 < 20 < 200 < 20 < 20 < 20 2200 < 20 340 < 20 12011/09/01 TB 15580 130 170 < 10 29 89 D 610 < 10 J 6 22 < 10 J 16 < 10 < 10 < 10 D 8900 < 10 220 17 110

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 136 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

BW-010JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: Main Waste

02/09/02 TB 16383 170 230 < 10 23 200 D 970 < 10 J 5 66 < 10 J 24 < 10 J 9 < 10 D 14000 < 10 D 460 10 22005/07/02 TB 16920 180 200 < 25 31 290 710 < 25 < 25 39 < 25 J 42 < 25 < 25 < 25 D 15000 < 25 370 28 13507/08/02 TB 17390 21007/08/02 TB 17397 350 240 < 20 72 940 770 < 20 J 12 79 < 20 J 150 < 20 J 8 < 20 D 31000 < 20 540 J 16 21208/16/02 TB 17698 160 260 < 20 44 340 890 < 20 J 13 79 < 20 < 200 < 20 J 8 J 8 D 22000 < 20 660 47 20011/05/02 TB 18126 280 130 < 10 20 88 360 < 10 J 6 36 < 10 < 100 < 10 J 4 < 10 D 16000 < 10 200 24 90

02/26/03 TB 18780 470 320 < 10 120 D 880 D 970 14 45 64 D 10 180 J 4 J 6 10 D 36000 < 10 440 69 16205/12/03 TB 19245 46 68 < 5 10 J 16 175 < 5 < 5 7 < 5 < 20 < 4 < 5 < 5 8910 < 5 50 J 4 1908/19/03 TB 19676 161 181 < 25 49 665 722 < 25 < 25 41 < 25 < 100 < 20 < 25 < 25 30000 < 25 317 J 35 10611/17/03 TB 20052 164 160 < 20 28 1060 564 < 20 < 20 28 < 20 J 148 < 16 < 20 < 20 33100 < 20 252 52 72

02/27/04 TB 20531 1100 1940 < 80 904 46000 5430 120 237 145 < 80 J 6530 J 127 < 80 < 80 3050000 < 80 1260 878 355

04/13/04 TB 20684 299 247 < 20 75 1910 873 < 20 20 52 < 20 331 < 16 < 20 < 20 55000 < 20 416 84 134

05/19/04 TB 20733 134 178 < 25 57 1280 586 < 25 < 25 32 < 25 239 < 20 < 25 < 25 51400 < 25 256 J 42 85

06/29/04 TB 20831 320 299 < 40 102 1230 963 < 40 < 40 48 < 40 < 160 < 32 < 40 < 40 54800 < 40 367 J 58 13408/26/04 TB 20973 450 249 < 40 81 1420 919 < 40 < 40 57 < 40 J 252 < 32 < 40 < 40 72600 < 40 378 J 71 151

02/02/05 TB 21864 569 353 < 40 61 J 128 1690 < 40 < 40 75 < 40 < 160 < 32 < 40 < 40 38100 < 40 421 J 63 33905/06/05 TB 22458 32 73 < 5 33 J 32 153 < 5 15 6 < 5 < 20 J 4 < 5 < 5 13800 < 5 59 12 44

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 137 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

BW-012JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: Main Waste

02/07/97 TB 01643 < 50 < 50 < 50 < 100 < 50 < 50 < 50 < 50 < 100 < 50 39000 < 50 < 50 < 100 < 50

03/02/02 TB 16609 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 650 < 5 < 5 < 5 < 5

02/28/03 TB 18864 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 D 6800 < 5 < 5 < 5 < 5

02/26/04 TB 20505 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 7200 < 5 < 5 < 2 < 508/30/04 TB 21024 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 4620 < 5 < 5 < 2 < 510/14/04 TB 21291 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 5890 < 5 < 5 < 2 < 511/18/04 TB 21486 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 6800 < 5 < 5 < 2 < 512/07/04 TB 21544 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 6160 < 5 < 5 < 2 < 5

01/19/05 TB 21849 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 5730 < 5 < 5 < 2 < 502/04/05 TB 21905 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 6800 < 5 < 5 < 2 < 505/06/05 TB 22459 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 6180 < 5 < 5 < 2 < 5

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 138 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

BW-013JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: Main Waste

02/09/97 TB 01644 1200 < 250 < 250 < 500 4700 120 70 < 250 < 500 < 250 6800 < 250 300 650 22005/08/97 TB 02156 130 970 < 250 < 250 < 500 3700 J 110 < 250 J 110 < 500 < 250 7400 < 250 470 690 < 25006/09/97 TB 02305 760 < 250 < 250 < 500 3200 < 250 < 250 < 250 < 500 < 250 3000 < 250 < 250 J 300 J 14006/29/97 TB 02371 730 < 100 < 100 < 200 2500 J 61 < 100 < 100 < 200 < 100 E 12000 < 100 510 240 22010/08/97 TB 02974 400 < 100 150 < 200 1800 J 47 J 57 < 100 < 200 < 100 < 1000 < 100 390 J 93 140

01/17/98 TB 03654 190 < 25 99 < 100 530 J 14 34 J 37 < 25 J 37 < 50 < 25 J 11 < 25 250 J 55 19204/04/98 TB 04192 < 25 170 < 25 98 B 65 500 26 34 < 25 < 50 < 25 E 20000 < 25 240 53 15007/08/98 TB 04968 170 140 < 25 65 < 100 290 < 25 J 18 < 50 < 25 < 50 < 50 < 25 < 50 18000 < 25 J 44 J 47 8111/09/98 TB 06503 < 500 120 < 25 60 < 100 225 < 25 J 20 < 50 < 25 < 50 < 50 < 25 < 50 15000 < 25 < 50 J 41 < 25

02/02/99 TB 07364 < 200 140 < 10 63 < 40 480 J 10 17 68 < 10 < 20 < 20 J 6 J 6 25000 J 5 320 32 180

05/08/99 TB 08248 < 200 97 < 10 67 < 40 370 J 6 13 37 < 10 < 20 < 20 J 6 < 20 D 11000 J 3 210 J 22

08/12/99 TB 09227 < 10 78 < 5 37 < 5 160 5 10 < 5 < 5 < 50 < 5 < 5 J 3 D 7700 < 5 J 3 35 15

11/12/99 TB 10444 162 100 < 5 56 32 D 240 8 9 51 < 5 < 50 < 5 < 5 < 5 D 7200 < 5 177 16 130

02/05/00 TB 11111 27 40 < 5 28 < 5 34 J 2 J 4 J 3 < 5 < 50 < 5 < 5 < 5 D 9340 < 5 31 6 6405/06/00 TB 11685 28 76 < 5 27 < 5 222 < 5 5 11 < 5 < 50 < 5 < 5 < 5 D 10800 < 5 150 6 8108/03/00 TB 12307 < 20 84 < 10 27 < 10 D 260 < 10 < 10 < 10 < 10 < 100 < 10 < 10 < 10 D 4900 < 10 110 J 9 6410/10/00 TB 12752 < 10 46 < 5 22 < 5 5 < 5 J 4 < 5 < 5 < 50 J 4 5 < 5 D 11000 < 5 < 5 J 5 26

02/17/01 TB 13813 < 10 23 < 5 22 < 5 59 < 5 < 5 12 < 5 < 50 6 < 5 < 5 D 13000 < 5 59 < 5 6505/02/01 TB 14290 120 18 < 5 14 < 5 9 < 5 < 5 < 5 < 5 < 50 7 < 5 < 5 D 21000 < 5 8 < 5 3308/16/01 TB 14979 < 20 11 < 10 10 < 10 < 10 < 10 < 10 < 10 < 10 < 100 < 10 < 10 < 10 D 32000 < 10 < 10 < 10 < 1011/14/01 TB 15664 < 10 50 < 5 26 < 5 44 < 5 7 34 < 5 < 50 7 11 < 5 D 23000 < 5 80 7 80

02/03/02 TB 16315 45 16 < 5 16 < 5 61 < 5 < 5 30 < 5 < 50 8 J 3 < 5 D 29000 < 5 62 J 2 9905/08/02 TB 16950 21 15 < 5 11 < 5 27 < 5 < 5 10 < 5 < 50 10 < 5 < 5 D 40000 < 5 37 J 2 6408/17/02 TB 17710 19 11 < 5 9 < 5 8 < 5 < 5 J 4 < 5 < 50 7 J 2 < 5 D 23000 < 5 10 < 5 3711/02/02 TB 18125 < 10 13 < 5 7 < 5 10 < 5 < 5 5 < 5 < 50 9 < 5 < 5 D 52000 < 5 15 < 5 4311/06/02 TB 18134 86 11 < 5 8 < 5 13 < 5 < 5 10 < 5 < 50 8 J 1 < 5 D 85000 < 5 22 < 5 58

02/26/03 TB 18781 22 11 < 5 7 < 5 15 < 5 < 5 7 < 5 < 50 10 < 5 < 5 D 33000 < 5 20 < 5 2005/13/03 TB 19272 7 13 < 5 6 < 15 27 < 5 < 5 14 < 5 < 20 J 7 < 5 < 5 29800 < 5 45 < 2 < 508/19/03 TB 19677 7 21 < 5 7 < 15 55 < 5 < 5 49 < 5 < 20 J 9 < 5 < 5 31800 < 5 99 < 2 89

11/13/03 TB 20023 26 23 < 5 6 < 15 70 < 5 < 5 39 < 5 < 20 J 8 < 5 < 5 24900 < 5 97 J 3 92

02/26/04 TB 20503 < 5 10 < 5 5 < 15 12 < 5 < 5 8 < 5 < 20 J 8 < 5 < 5 32700 < 5 12 J 2 23

08/27/04 TB 21000 14 10 < 5 5 < 15 9 < 5 < 5 6 < 5 < 20 J 7 < 5 < 5 34400 < 5 12 < 2 26

10/14/04 TB 21292 73 22 < 5 5 < 15 20 < 5 < 5 20 < 5 < 20 J 8 < 5 < 5 37400 < 5 36 J 4 66

11/18/04 TB 21487 < 5 12 < 5 5 < 15 6 < 5 < 5 5 < 5 < 20 J 7 < 5 < 5 24900 < 5 12 < 2 2212/07/04 TB 21545 < 5 5 < 5 6 < 15 < 5 < 5 < 5 < 5 < 5 < 20 J 6 < 5 < 5 37200 < 5 < 5 < 2 < 5

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 139 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

BW-013JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: Main Waste

01/19/05 TB 21850 14 11 < 5 < 5 < 15 30 < 5 < 5 32 < 5 < 20 J 5 < 5 < 5 34000 < 5 31 < 2 6202/04/05 TB 21906 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 2750 < 5 < 5 < 2 J 306/21/05 TB 22728 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 J 6 < 5 < 5 30700 < 5 < 5 < 2 < 5

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 140 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

BW-014JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: Main Waste

02/09/97 TB 01645 5800 < 1000 < 1000 < 2000 22000 580 440 < 1000 < 2000 < 1000 62000 < 1000 4300 8200 56005/08/97 TB 02153 3400 3900 < 500 < 500 < 1000 13000 J 380 J 410 < 500 < 1000 < 500 E 35000 < 500 3200 3900 99006/09/97 TB 02297 2300 < 500 < 500 < 1000 9000 < 500 J 340 < 500 < 1000 < 500 26000 < 500 2200 2400 < 50006/29/97 TB 02372 2200 < 250 < 250 < 500 9200 J 200 J 240 < 250 < 500 < 250 E 63000 < 250 1800 2100 55008/07/97 TB 02520 2600 < 500 < 500 B 2200 9100 J 270 J 240 B 410 < 1000 < 500 J 3400 < 500 1600 4500 54009/26/97 TB 02897 2700 < 500 890 < 1000 13000 J 260 680 < 500 < 1000 < 500 J 1400 < 500 4600 2400 150010/01/97 TB 02936 6200 < 2500 2900 < 5000 27000 < 2500 < 2500 < 2500 < 5000 < 2500 < 25000 < 2500 9200 < 5000 140011/07/97 TB 03231 850 < 250 740 B 720 2800 J 120 J 120 < 250 < 500 < 250 17000 < 250 680 1000 290

02/12/98 TB 03783 1400 < 250 < 250 < 500 6200 J 120 J 220 < 250 < 500 < 250 12000 < 250 1700 820 54003/16/98 TB 04005 E 780 1500 < 250 < 250 B 830 5600 J 120 J 200 < 250 < 500 < 250 20000 < 250 1400 1100 530

04/04/98 TB 04193 J 180 1400 < 250 550 J 480 5000 < 200 J 200 < 250 < 500 < 250 19000 < 250 1400 780 470

06/04/98 TB 04716 990 < 250 280 J 150 3400 < 250 < 250 J 130 < 250 < 500 < 500 < 250 < 500 6500 < 250 1000 J 630 280

07/08/98 TB 04969 J 950 2300 < 250 520 J 350 7300 < 250 J 110 J 190 < 250 < 500 < 500 < 250 J 150 30000 < 250 1500 1800 260

10/11/98 TB 06120 J 340 1100 < 250 J 220 < 1000 3400 < 250 < 250 J 98 < 250 < 500 < 500 < 250 < 500 18000 < 250 780 J 420 J 74

11/03/98 TB 06364 < 5000 530 < 250 J 130 < 1000 2200 < 250 < 250 < 500 < 250 < 500 < 500 < 250 < 500 7000 < 250 J 500 J 220 < 25012/04/98 TB 06851 J 68 500 < 100 120 < 400 1700 < 100 < 100 J 33 < 100 < 200 < 200 < 100 < 200 9100 < 100 330 J 180 J 44

01/05/99 TB 07141 < 2000 490 < 100 110 < 400 1500 < 100 < 100 J 51 < 100 < 200 < 200 < 100 < 200 5900 < 100 320 J 200 J 4902/02/99 TB 07365 < 1000 550 < 50 170 < 200 2100 J 16 J 26 J 45 < 50 < 100 < 100 < 50 J 18 13000 < 50 470 210 J 10005/08/99 TB 08249 < 1000 340 < 50 69 < 200 1300 < 50 < 50 J 23 < 50 < 100 < 100 < 50 < 100 5800 < 50 220 J 10008/12/99 TB 09228 < 100 400 < 50 J 50 < 50 1400 < 50 < 50 J 35 < 50 < 500 < 50 < 50 < 50 7600 < 50 260 84 J 3610/07/99 TB 10005 110 420 < 50 70 150 1800 < 50 < 50 J 34 < 50 < 500 < 50 < 50 < 50 9000 < 50 380 93 J 4011/18/99 TB 10500 1300 1300 < 50 400 830 D 5300 80 110 350 < 50 < 500 < 50 < 50 < 50 D 42000 < 50 D 2800 490 94012/04/99 TB 10628 300 320 < 50 70 160 1500 < 50 < 50 J 50 < 50 < 500 < 50 < 50 < 50 7400 < 50 350 61 J 50

01/06/00 TB 10870 210 260 < 25 69 46 1200 < 25 < 25 < 25 < 25 < 250 < 25 < 25 < 25 6500 < 25 180 61 < 2503/04/00 TB 11303 880 450 < 80 330 < 80 2700 < 80 J 68 J 61 < 80 < 800 < 80 < 80 < 80 < 1600 < 80 890 120 40004/06/00 TB 11500 270 110 < 25 39 < 25 800 < 25 < 25 J 16 < 25 < 250 < 25 < 25 < 25 2400 < 25 130 39 J 6505/06/00 TB 11686 < 100 130 < 50 < 50 < 50 1040 < 50 < 50 < 50 < 50 < 500 < 50 < 50 < 50 13800 < 50 140 J 30 < 5006/07/00 TB 11924 < 100 460 < 50 220 < 50 D 3300 < 50 J 47 78 < 50 < 500 < 50 < 50 < 50 5500 < 50 990 72 25007/06/00 TB 12097 < 40 59 < 20 44 < 20 510 < 20 < 20 < 20 < 20 < 200 < 20 < 20 < 20 3800 < 20 66 23 J 2808/03/00 TB 12308 630 150 < 50 90 < 50 D 130000 < 50 < 50 < 50 < 50 < 500 < 50 < 50 < 50 448470 < 50 120 < 50 < 5010/10/00 TB 12753 110 80 < 20 35 < 20 580 < 20 < 20 J 14 < 20 < 200 < 20 < 20 < 20 3700 < 20 74 J 20 J 12

11/03/00 TB 13107 < 40 67 < 20 < 20 < 20 480 < 20 < 20 < 20 < 20 < 200 < 20 < 20 < 20 < 400 < 20 65 < 20 J 24

01/05/01 TB 13515 1400 330 < 20 320 < 20 D 3100 30 41 110 < 20 < 200 < 20 28 22 2600 < 20 D 990 64 940

02/14/01 TB 13791 < 200 450 < 100 190 220 2700 < 100 < 100 110 < 100 < 1000 < 100 < 100 < 100 14000 < 100 880 130 400

03/13/01 TB 14001 230 71 < 10 34 < 10 490 J 5 J 7 29 < 10 < 100 < 10 J 6 < 10 5600 < 10 110 13 12405/02/01 TB 14291 610 520 < 20 430 28 D 2000 51 61 44 < 20 < 200 < 20 22 22 12000 < 20 750 98 46808/17/01 TB 14996 < 200 690 < 100 250 < 100 3900 < 100 < 100 < 100 < 100 < 1000 < 100 < 100 < 100 17000 < 100 660 J 89 < 100

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 141 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

BW-014JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: Main Waste

10/03/01 TB 15278 140 120 < 40 110 < 40 820 < 40 < 40 < 40 < 40 < 400 < 40 < 40 < 40 9800 < 40 120 < 40 15211/14/01 TB 15665 130 46 < 10 42 < 10 240 < 10 J 5 10 < 10 < 100 < 10 J 4 < 10 D 5700 < 10 30 12 110

02/03/02 TB 16316 190 96 < 25 150 130 790 J 15 J 16 46 < 25 < 250 < 25 J 11 < 25 D 17000 < 25 210 J 21 36005/07/02 TB 16921 D 3200 66 < 10 83 24 D 480 J 8 11 15 < 10 < 100 < 10 15 < 10 D 13000 J 7 75 J 9 51008/17/02 TB 17711 D 1600 19 < 5 31 < 5 180 J 2 J 3 10 < 5 < 50 J 3 8 < 5 D 9700 J 3 47 J 4 35411/06/02 TB 18135 160 9 < 5 10 < 5 27 < 5 < 5 < 5 < 5 < 50 J 3 J 2 < 5 D 9950 < 5 J 2 J 2 47

02/26/03 TB 18782 D 670 25 < 5 19 < 5 110 J 2 J 3 < 5 < 5 < 50 J 3 J 4 < 5 D 5500 < 5 J 5 8 8305/12/03 TB 19246 34 19 < 5 14 < 15 54 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 9550 < 5 11 J 3 2608/19/03 TB 19678 174 18 < 5 16 < 15 119 < 5 < 5 < 5 < 5 < 20 < 4 5 < 5 3880 < 5 11 < 2 72

11/17/03 TB 20053 107 18 < 5 14 < 15 77 < 5 < 5 < 5 < 5 < 20 < 4 5 < 5 5740 < 5 < 5 J 4 82

02/26/04 TB 20497 76 72 < 5 45 62 106 7 9 < 5 < 5 < 20 J 4 < 5 < 5 16900 < 5 26 30 22

08/26/04 TB 20974 < 5 10 < 5 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 4110 < 5 < 5 J 4 < 5

02/02/05 TB 21865 21 66 < 5 14 < 15 88 < 5 5 < 5 < 5 < 20 < 4 < 5 < 5 11500 < 5 < 5 J 8 1105/06/05 TB 22461 < 5 11 < 5 6 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 4650 < 5 < 5 < 2 < 5

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 142 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

BW-015JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: Main Waste

02/19/97 TB 01744 1200 < 84 540 < 170 1500 140 < 84 < 84 < 170 < 84 2400 J 18 J 22 1400 J 7805/08/97 TB 02148 29 690 < 50 370 < 100 770 93 < 50 < 50 < 100 < 50 E 2600 < 50 J 26 620 J 4706/09/97 TB 02299 450 < 25 270 < 50 510 56 < 25 < 25 < 50 < 25 3000 < 25 J 16 370 3406/29/97 TB 02373 440 < 25 300 < 50 800 65 < 25 < 25 < 50 < 25 E 12000 < 25 J 16 450 3009/05/97 TB 02748 280 < 10 310 < 20 180 130 < 10 11 < 20 < 10 E 2700 < 10 J 8 200 2009/26/97 TB 02894 12000 < 500 E 21000 1800 < 500 13000 < 500 560 < 1000 < 500 E 160000 < 500 < 500 4600 55012/13/97 TB 03468 160 < 25 230 < 100 250 39 70 < 50 < 25 < 50 < 25 J 20 < 25 < 50 140 < 25

03/08/98 TB 03927 85 < 10 200 < 20 90 46 < 10 J 5 < 20 < 10 < 100 < 10 < 10 66 < 1006/04/98 TB 04714 99 < 5 E 330 < 20 98 33 130 < 10 21 < 10 < 10 < 5 10 2100 < 5 J 2 74 J 309/10/98 TB 05783 < 20 20 < 10 120 < 40 18 < 10 50 < 20 < 10 < 20 < 20 < 10 < 20 1800 < 10 < 20 J 10 < 10

11/03/98 TB 06365 < 100 32 < 5 170 < 20 46 10 71 < 10 6 < 10 < 10 < 5 J 3 2700 < 5 J 2 16 J 4

02/02/99 TB 07366 < 100 18 < 5 95 < 20 J 5 8 68 < 10 8 < 10 < 10 < 5 J 2 620 < 5 < 10 J 9 < 508/12/99 TB 09229 < 10 37 < 5 99 < 5 57 8 71 < 5 5 < 50 < 5 < 5 J 3 1500 < 5 < 5 20 < 5

02/05/00 TB 11114 < 10 27 < 5 79 < 5 11 10 79 < 5 J 4 < 50 < 5 < 5 J 3 240 < 5 < 5 20 < 510/12/00 TB 12787 < 10 27 < 5 39 < 5 < 5 5 38 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 16 < 5

02/14/01 TB 13792 < 10 19 < 5 24 < 5 J 2 < 5 28 < 5 < 5 < 50 < 5 < 5 < 5 270 < 5 < 5 12 < 505/01/01 TB 14275 < 10 29 < 5 30 < 5 < 5 6 37 < 5 < 5 < 50 < 5 < 5 < 5 480 < 5 < 5 9 < 508/16/01 TB 14980 < 10 98 < 5 20 < 5 J 3 8 16 < 5 < 5 < 50 < 5 < 5 19 < 2000 < 5 < 5 21 < 511/09/01 TB 15581 J 9 160 < 5 21 < 5 9 11 15 < 5 < 5 < 50 < 5 < 5 28 620 < 5 < 5 49 < 5

02/09/02 TB 16384 < 10 D 240 J 3 32 < 5 15 20 28 < 5 < 5 < 50 < 5 J 2 46 630 J 2 < 5 70 < 505/07/02 TB 16922 < 10 D 320 J 4 37 < 5 15 22 24 < 5 < 5 < 50 < 5 J 3 54 1100 J 2 < 5 84 J 108/16/02 TB 17699 < 10 D 460 6 43 < 5 40 29 20 < 5 < 5 < 50 < 5 J 4 72 1300 J 3 < 5 140 < 511/05/02 TB 18127 < 25 280 < 13 28 < 13 15 18 13 < 13 < 13 < 125 < 13 < 13 40 1800 < 13 < 13 70 < 13

02/14/03 TB 18707 < 20 470 J 6 45 < 10 43 28 16 < 10 < 10 < 100 < 10 J 3 67 2600 < 10 < 10 140 < 1005/12/03 TB 19247 < 10 525 < 10 44 < 30 85 32 16 < 10 < 10 < 40 < 8 < 10 80 2000 < 10 < 10 99 < 1008/19/03 TB 19679 < 10 386 < 10 32 < 30 58 23 11 < 10 < 10 < 40 < 8 < 10 58 1730 < 10 < 10 75 < 1011/17/03 TB 20054 < 10 272 < 10 26 < 30 46 16 < 10 < 10 < 10 < 40 < 8 < 10 80 2190 < 10 < 10 112 < 10

02/26/04 TB 20496 < 10 246 < 10 22 < 30 36 14 10 < 10 < 10 < 40 < 8 < 10 33 1600 < 10 < 10 52 < 1008/26/04 TB 20975 < 5 92 < 5 11 < 15 13 5 < 5 < 5 < 5 < 20 < 4 < 5 12 2100 < 5 < 5 21 < 5

02/02/05 TB 21866 < 5 114 < 5 13 < 15 15 5 8 < 5 < 5 < 20 < 4 < 5 12 1630 < 5 < 5 26 < 505/06/05 TB 22462 < 5 145 < 5 14 < 15 11 8 7 < 5 < 5 < 20 < 4 < 5 18 2390 < 5 < 5 27 < 5

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 143 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

BW-016RJUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: Main Waste

05/07/97 TB 02119 1700 < 100 < 100 < 200 2500 J 95 < 100 < 100 < 200 < 100 E 19000 < 100 180 2400 10006/09/97 TB 02298 3600 < 500 < 500 < 1000 11000 J 260 < 500 < 500 < 1000 < 500 44000 < 500 1000 4800 < 50006/29/97 TB 02374 4400 < 500 < 500 < 1000 14000 J 300 < 500 < 500 < 1000 < 500 E 180000 < 500 1200 6600 J 26010/08/97 TB 02973 2600 < 500 820 < 1000 6400 < 500 < 500 < 500 < 1000 < 500 E 24000 < 500 J 420 3500 < 500

01/17/98 TB 03655 1900 < 100 550 < 400 3300 120 J 75 < 200 < 100 J 51 < 200 < 100 J 160 < 100 J 170 1400 14202/16/98 TB 03822 2100 < 125 630 < 250 3200 J 71 < 125 < 125 < 250 < 125 25000 < 125 140 2300 J 5404/04/98 TB 04194 < 125 2100 < 125 680 B 290 2700 < 125 < 125 < 125 < 250 < 125 15000 < 125 J 110 2100 < 12507/08/98 TB 04970 < 200 780 < 100 310 < 400 440 < 100 J 50 < 200 < 100 < 200 < 200 < 100 J 52 11000 < 100 < 200 950 < 10008/07/98 TB 05394 < 50 370 < 25 170 < 100 230 J 15 25 < 50 < 25 < 50 < 50 < 25 J 20 6600 < 25 < 50 450 < 2511/03/98 TB 06366 < 200 130 < 10 66 < 40 59 < 10 13 < 20 < 10 < 20 < 20 < 10 < 20 3100 < 10 < 20 150 < 10

01/05/99 TB 07142 < 100 91 < 5 47 < 20 36 J 4 47 < 10 < 5 < 10 < 10 < 5 J 4 980 < 5 < 10 83 < 502/02/99 TB 07367 < 100 80 < 5 59 < 20 31 J 4 14 < 10 < 5 < 10 < 10 J 1 J 3 2800 < 5 J 2 55 J 1

05/08/99 TB 08250 < 100 120 < 5 56 < 20 17 < 5 17 < 10 < 5 < 10 < 10 < 5 < 10 620 < 5 < 10 93

08/12/99 TB 09230 < 10 69 < 5 35 10 53 < 5 17 < 5 < 5 < 50 < 5 < 5 < 5 D 3200 < 5 J 4 23 J 1410/07/99 TB 10006 < 10 98 < 5 46 < 5 11 < 5 22 < 5 < 5 < 50 < 5 < 5 < 5 1200 < 5 < 5 16 < 511/11/99 TB 10428 J 9 80 < 5 62 < 5 21 < 5 33 < 5 < 5 < 50 < 5 < 5 < 5 D 2700 < 5 7 8 J 912/04/99 TB 10629 16 67 < 5 32 < 5 64 < 5 11 < 5 < 5 < 50 < 5 < 5 < 5 D 3500 < 5 < 5 20 < 5

05/06/00 TB 11688 < 10 60 < 5 23 < 5 22 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 650 < 5 < 5 35 < 508/04/00 TB 12322 < 10 14 < 5 < 5 < 5 8 < 5 < 50 < 5 780 < 5 < 5 7 < 510/12/00 TB 12789 < 10 25 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 14 < 5

02/14/01 TB 13793 < 10 19 < 5 9 < 5 < 5 < 5 7 < 5 < 5 < 50 < 5 < 5 < 5 J 79 < 5 < 5 13 < 505/01/01 TB 14277 < 10 29 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 180 < 5 < 5 9 < 508/16/01 TB 14982 < 10 21 < 5 6 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 1000 < 5 < 5 10 < 511/15/01 TB 15677 < 10 35 < 5 8 < 5 18 < 5 J 3 < 5 < 5 < 50 < 5 < 5 < 5 250 < 5 8 6 < 5

02/09/02 TB 16385 20 44 < 5 7 < 5 33 < 5 J 5 J 3 < 5 < 50 < 5 < 5 < 5 370 < 5 16 J 5 J 705/07/02 TB 16924 92 59 < 5 18 83 75 J 2 8 6 < 5 J 13 < 5 < 5 J 3 D 1900 < 5 32 9 1508/16/02 TB 17700 14 29 < 5 7 < 5 43 < 5 8 J 3 < 5 < 50 < 5 < 5 < 5 260 < 5 18 J 5 J 911/06/02 TB 18137 < 10 12 < 5 J 3 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 7 < 5

02/14/03 TB 18709 < 10 11 < 5 J 4 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 490 < 5 < 5 8 < 5

05/12/03 TB 19248 < 5 11 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 330 < 5 < 5 J 4 < 508/19/03 TB 19680 < 5 9 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 367 < 5 < 5 J 5 < 511/17/03 TB 20055 < 5 8 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 429 < 5 < 5 J 4 < 5

02/26/04 TB 20515 < 5 7 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 264 < 5 < 5 J 3 < 508/26/04 TB 20976 < 5 10 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 1540 < 5 < 5 J 4 < 5

02/02/05 TB 21867 < 5 8 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 1200 < 5 < 5 J 5 < 5

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 144 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

BW-016RJUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: Main Waste

05/06/05 TB 22463 < 5 11 < 5 5 < 15 < 5 < 5 5 < 5 < 5 < 20 < 4 < 5 < 5 2000 < 5 < 5 J 4 < 5

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 145 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

BW-017JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: Main Waste

02/18/97 TB 01735 350 < 50 < 50 120 840 < 50 130 < 50 J 62 < 50 E 17000 < 50 170 J 69 8405/08/97 TB 02150 J 5 280 < 12 140 < 25 260 21 31 J 6 < 25 < 12 E 6200 < 12 130 42 9006/09/97 TB 02301 150 < 5 76 21 190 5 16 J 4 < 10 < 5 < 50 J 4 33 22 5906/29/97 TB 02375 180 < 10 78 < 20 140 J 5 10 < 10 < 20 < 10 E 18000 < 10 24 30 5008/07/97 TB 02519 210 < 12 84 < 25 290 J 7 14 B 5 < 25 < 12 E 3900 J 6 36 54 7209/26/97 TB 02893 9200 < 500 3600 < 1000 910 J 460 760 < 500 < 1000 J 270 E 300000 J 220 1200 1100 570011/07/97 TB 03228 55 < 5 27 B 5 18 < 5 J 2 < 5 < 10 J 2 E 1200 < 5 J 4 J 9 39

02/12/98 TB 03777 40 < 5 25 < 10 14 < 5 < 5 < 5 < 10 < 5 E 3400 < 5 < 5 J 5 J 3

08/31/04 TB 21061 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

10/14/04 TB 21293 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 511/18/04 TB 21488 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 180 < 5 < 5 < 2 < 512/07/04 TB 21546 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 56 < 5 < 5 < 2 < 5

01/19/05 TB 21851 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 360 < 5 < 5 < 2 < 502/09/05 TB 21933 < 5 24 < 5 14 < 15 35 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 1960 < 5 < 5 < 2 J 203/08/05 TB 22237 114 80 < 5 49 < 15 147 13 < 5 7 < 5 < 20 < 4 < 5 < 5 6240 < 5 < 5 J 8 4904/12/05 TB 22336 12 78 < 5 45 < 15 < 5 11 < 5 < 5 < 5 < 20 < 4 < 5 < 5 12600 < 5 < 5 J 4 28

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 146 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

BW-018JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: Main Waste

02/07/97 TB 01646 4 < 5 < 5 < 10 4 < 5 < 5 < 5 < 10 < 5 10000 < 5 3 < 10 3

03/02/02 TB 16610 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 220 < 5 < 5 < 5 < 5

02/28/03 TB 18862 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 5

02/26/04 TB 20490 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 508/30/04 TB 21025 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 351 < 5 < 5 < 2 < 510/14/04 TB 21294 < 5 6 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 1550 < 5 < 5 < 2 < 511/18/04 TB 21489 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 512/07/04 TB 21547 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

01/19/05 TB 21852 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 502/04/05 TB 21907 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 505/06/05 TB 22465 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 167 < 5 < 5 < 2 < 5

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 147 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

BW-019JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: Main Waste

02/23/97 TB 01754 16 < 5 7 J 8 J 2 < 5 < 5 < 5 < 10 J 3 E 16000 < 5 < 5 J 9 < 5

03/05/02 TB 16632 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 5

02/27/03 TB 18826 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 5

08/30/04 TB 21026 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 510/14/04 TB 21295 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 117 < 5 < 5 < 2 < 511/18/04 TB 21490 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 512/07/04 TB 21548 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

01/20/05 TB 21859 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

02/09/05 TB 21934 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 50 < 5 < 5 < 2 < 506/17/05 TB 22719 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 148 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

BW-022JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: Main Waste

05/02/97 TB 02081 < 5 < 5 < 5 < 10 J 3 < 5 < 5 < 5 < 10 < 5 < 50 < 5 J 3 < 10 < 5

03/03/02 TB 16618 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 5

02/27/03 TB 18829 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 5

08/30/04 TB 21027 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 510/14/04 TB 21296 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 511/18/04 TB 21491 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 512/07/04 TB 21549 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

01/19/05 TB 21853 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

02/10/05 TB 21949 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 504/13/05 TB 22362 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 149 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

BW-023JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: Main Waste

05/01/97 TB 02080 < 10 < 5 < 5 < 5 < 10 < 5 < 5 < 5 < 5 < 10 < 5 < 50 < 5 J 2 < 10 < 5

03/03/02 TB 16619 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 5

02/27/03 TB 18830 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 5

08/30/04 TB 21028 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

05/17/05 TB 22543 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 150 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

BW-025JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: Main Waste

03/09/97 TB 01839 < 5 < 5 < 5 < 10 5 < 5 < 5 J 2 < 10 < 5 E 9500 < 5 J 2 < 10 504/24/97 TB 02067 < 5 < 5 < 5 < 10 < 5 < 5 < 5 < 5 < 10 < 5 E 8400 < 5 < 5 < 10 < 5

03/05/02 TB 16636 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 5

02/27/03 TB 18832 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 5

08/26/04 TB 20977 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 510/14/04 TB 21297 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 130 < 5 < 5 < 2 < 511/18/04 TB 21492 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 1350 < 5 < 5 < 2 < 512/07/04 TB 21550 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 2200 < 5 < 5 < 2 < 5

01/19/05 TB 21854 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 2710 < 5 < 5 < 2 < 502/09/05 TB 21935 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 3510 < 5 < 5 < 2 < 504/13/05 TB 22363 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 151 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

BW-027JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: Main Waste

05/07/97 TB 02108 390 < 10 130 < 20 45 24 < 10 < 10 < 20 < 10 < 100 < 10 J 8 370 1306/09/97 TB 02300 26 410 < 25 210 < 50 120 95 30 J 22 < 50 < 25 720 < 25 300 380 11006/29/97 TB 02378 580 < 25 240 < 50 120 75 < 25 < 25 < 50 < 25 E 6900 J 10 180 780 11008/07/97 TB 02521 890 < 50 620 B 84 61 480 < 50 B 75 < 100 < 50 J 450 J 28 130 1300 12011/07/97 TB 03230 410 < 100 3300 B 260 150 2100 < 100 380 < 200 < 100 14000 < 100 J 81 440 < 100

02/12/98 TB 03778 300 < 100 2700 < 200 140 2200 < 100 330 < 200 < 100 8200 < 100 < 100 J 190 < 10005/11/98 TB 04529 < 50 410 < 50 1400 < 100 64 1000 < 50 90 < 100 < 50 7400 < 50 < 50 320 < 5007/08/98 TB 04971 < 10 130 J 4 D 640 < 20 J 3 76 D 410 < 10 62 < 10 < 10 < 5 22 2600 J 3 J 4 120 < 511/04/98 TB 06389 < 500 28 < 25 110 < 100 J 20 < 25 51 < 50 < 25 < 50 < 50 < 25 < 50 5300 < 25 < 50 J 22 < 25

02/04/99 TB 07390 < 100 24 < 5 56 < 20 < 5 < 5 24 < 10 < 5 < 10 < 10 < 5 < 10 130 < 5 < 10 J 6 < 508/12/99 TB 09231 < 10 24 < 5 31 < 5 10 < 5 18 < 5 < 5 < 50 < 5 < 5 < 5 430 < 5 < 5 7 < 5

04/06/00 TB 11501 < 10 35 < 5 26 < 5 < 5 < 5 13 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 28 < 510/13/00 TB 12794 < 10 14 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 5

02/14/01 TB 13794 < 10 8 < 5 J 4 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 9 < 508/16/01 TB 14983 < 10 6 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 680 < 5 < 5 J 2 < 511/09/01 TB 15582 J 7 7 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 5

02/09/02 TB 16386 34 5 < 5 J 2 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 J 2 < 505/07/02 TB 16925 24 25 < 5 11 30 42 < 5 J 2 J 2 < 5 J 4 < 5 < 5 < 5 930 < 5 14 J 4 J 308/16/02 TB 17701 J 9 17 < 5 6 < 5 31 < 5 J 2 < 5 < 5 < 50 < 5 < 5 < 5 J 94 < 5 J 5 J 5 J 311/05/02 TB 18128 < 10 7 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 J 1 < 5

01/23/03 TB 18512 < 10 5 < 5 J 2 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 502/14/03 TB 18710 < 10 7 < 5 J 3 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 504/15/03 TB 19100 < 5 7 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 505/12/03 TB 19239 < 5 10 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 506/11/03 TB 19372 < 5 8 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 507/09/03 TB 19479 < 5 J 7 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 508/19/03 TB 19681 < 5 8 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 140 < 5 < 5 < 2 < 509/23/03 TB 19839 < 5 9 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 360 < 5 < 5 < 2 < 510/07/03 TB 19878 < 5 9 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 171 < 5 < 5 < 2 < 5

11/17/03 TB 20051 < 5 11 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 118 < 5 < 5 < 2 < 512/02/03 TB 20094 < 5 15 < 5 < 5 < 15 6 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 346 < 5 < 5 J 2 < 5

02/26/04 TB 20516 < 5 12 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 207 < 5 < 5 < 2 < 508/26/04 TB 20978 < 5 15 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 203 < 5 < 5 J 2 < 5

02/08/05 TB 21924 < 5 6 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 102 < 5 < 5 < 2 < 505/06/05 TB 22468 < 5 13 < 5 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 400 < 5 < 5 J 2 < 5

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 152 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

BW-027JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: Main Waste

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 153 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

BW-029JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: Main Waste

04/16/98 TB 04338 < 1000 1400 < 1000 28000 17000 4400 16000 < 1000 < 1000 8800 < 1000 E 240000 < 1000 1200 J 950 230006/04/98 TB 04719 3300 < 250 10000 B 3500 11000 1300 8100 J 230 510 1300 < 500 < 250 J 360 49000 < 250 1900 5400 130007/08/98 TB 04973 < 200 580 < 100 790 J 290 1300 J 86 520 < 200 < 100 J 87 < 200 < 100 J 49 3900 < 100 230 540 < 10008/07/98 TB 05396 < 200 740 < 100 1400 J 220 4300 140 960 J 40 < 100 < 200 < 200 < 100 J 80 6500 < 100 640 520 32010/11/98 TB 06122 < 2000 730 < 100 2300 < 400 3100 180 1600 < 200 < 100 < 200 < 200 < 100 J 77 12000 < 100 560 350 J 41011/05/98 TB 06416 < 2000 710 < 100 1800 < 400 3700 180 1300 < 200 < 100 < 200 < 200 < 100 J 62 7200 < 100 570 310 J 140

01/04/99 TB 07129 < 2500 225 < 125 660 J 250 340 J 58 500 < 250 < 125 < 250 < 250 < 125 < 250 5000 < 125 J 110 J 67 J 16002/01/99 TB 07352 < 2000 730 < 100 450 < 400 2000 J 56 200 J 110 < 100 < 200 < 200 < 100 J 46 9900 < 100 410 460 180005/08/99 TB 08252 < 1000 220 < 50 890 < 200 230 59 640 < 100 J 16 < 100 < 100 < 50 J 27 4100 < 50 J 36 J 6908/12/99 TB 09233 4100 1300 < 100 D 17000 D 28000 D 7100 1700 D 10000 1100 1400 D 13000 < 100 < 100 260 D 800000 120 3300 730 7500

10/07/99 TB 10008 < 1000 J 250 < 500 1100 < 500 1700 < 500 780 < 500 < 500 < 5000 < 500 < 500 < 500 J 6400 < 500 J 130 < 500 < 50011/11/99 TB 10430 530 290 < 100 2050 530 2640 180 1770 150 < 100 < 1000 < 100 < 100 < 100 8640 < 100 890 100 1440

12/04/99 TB 10631 < 100 170 < 50 590 < 50 1300 61 400 < 50 < 50 < 500 < 50 < 50 < 50 3100 < 50 89 J 41 190

03/04/00 TB 11305 110 140 < 20 640 < 20 610 50 400 J 13 J 14 < 200 < 20 < 20 J 15 E 8100 < 20 110 48 53005/06/00 TB 11690 530 130 < 50 970 230 1120 74 560 56 < 50 < 500 < 50 < 50 < 50 9470 < 50 170 J 50 97007/07/00 TB 12122 200 120 < 20 630 < 20 830 51 380 < 20 27 < 200 < 20 < 20 < 20 7100 < 20 60 40 50408/04/00 TB 12323 620 180 < 50 1400 < 50 1500 93 760 < 50 57 < 500 < 50 < 50 < 50 11000 < 50 160 81 120010/10/00 TB 12755 380 200 < 25 630 240 860 79 430 J 20 J 19 < 250 < 25 < 25 J 25 D 15000 J 17 81 91 J 20

02/14/01 TB 13796 160 120 < 5 260 28 220 19 94 89 < 5 < 50 < 5 < 5 9 D 7500 < 5 6 73 20705/01/01 TB 14278 < 80 170 < 40 D 3800 D 1700 300 230 980 < 40 150 670 < 40 < 40 45 D 190000 < 40 96 100 76808/16/01 TB 14984 870 D 1900 < 40 1400 D 1700 D 8500 160 410 210 88 590 < 40 < 40 91 D 36000 < 40 D 1700 440 76809/10/01 TB 15211 680 360 < 50 1100 410 1600 110 510 68 J 38 J 140 < 50 < 50 J 37 16000 < 50 240 130 65010/03/01 TB 15279 370 220 < 40 740 250 860 75 370 < 40 < 40 J 87 < 40 < 40 < 40 13000 < 40 82 79 60011/09/01 TB 15583 210 240 < 25 680 160 820 77 370 27 30 J 48 < 25 < 25 J 22 8700 < 25 170 80 435

02/09/02 TB 16387 460 160 < 13 440 110 310 44 200 230 58 J 25 < 13 < 13 J 12 D 15000 J 6 20 32 49505/07/02 TB 16926 360 200 < 25 630 230 470 60 310 < 25 31 J 48 < 25 < 25 J 17 D 26000 < 25 J 23 57 32007/08/02 TB 17391 48007/08/02 TB 17398 830 410 < 125 D 7400 < 125 1200 510 2500 J 71 210 < 1250 < 125 < 125 J 88 54000 < 125 480 180 122508/16/02 TB 17702 400 310 < 25 D 1700 860 910 150 740 J 17 200 270 < 25 J 6 36 D 39000 J 15 83 130 64511/05/02 TB 18129 580 260 < 80 1800 620 608 160 990 J 32 < 80 J 180 < 80 < 80 < 80 D 55000 < 80 180 140 540

02/14/03 TB 18711 140 130 < 10 460 62 92 40 210 J 2 27 < 10 < 10 J 4 J 10 D 12000 J 5 J 9 26 250

05/12/03 TB 19249 188 194 < 20 553 684 227 48 269 < 20 < 20 < 80 < 16 < 20 < 20 24800 < 20 < 20 J 18 167

08/19/03 TB 19682 366 215 < 25 606 399 324 88 302 < 25 40 < 100 < 20 < 25 < 25 24900 < 25 56 53 464

11/17/03 TB 20056 395 310 < 25 940 J 105 640 110 430 < 25 60 < 100 < 20 < 25 25 43600 < 25 25 50 320

12/15/03 TB 20183 325 295 < 25 1110 310 880 120 425 < 25 205 < 100 < 20 < 25 30 60800 < 25 40 50 355

02/18/04 TB 20409 469 1190 47 10800 J 2060 3310 2240 6740 166 935 J 2680 J 39 < 25 357 21100 68 1140 950 2078

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 154 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

BW-029JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: Main Waste

04/13/04 TB 20685 197 325 < 10 330 405 204 35 166 10 35 92 < 8 < 10 10 39600 < 10 40 25 21105/19/04 TB 20734 240 227 < 10 552 377 125 54 324 24 20 112 < 8 < 10 12 40900 < 10 81 25 31406/29/04 TB 20832 270 175 < 40 699 399 103 59 358 < 40 < 40 < 160 < 32 < 40 < 40 27500 < 40 97 J 19 39508/26/04 TB 20980 42 57 < 5 102 J 27 28 10 58 < 5 < 5 < 20 < 4 < 5 < 5 8240 < 5 11 J 7 54

02/02/05 TB 21869 414 273 < 40 5330 J 142 201 280 1720 < 40 202 < 160 < 32 < 40 < 40 158000 < 40 < 40 112 39303/08/05 TB 22238 42 111 < 5 106 222 21 10 41 < 5 < 5 < 20 < 4 < 5 < 5 19100 < 5 9 12 4504/12/05 TB 22337 252 231 < 5 4460 J 782 91 206 983 26 86 < 20 17 < 5 29 180000 9 56 69 320

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 155 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

BW-030JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: Main Waste

04/13/98 TB 04299 < 50 400 < 50 750 J 60 < 50 180 < 50 < 50 < 100 < 50 E 24000 < 50 < 50 < 100 < 5006/04/98 TB 04720 7200 < 500 3500 J 1900 23000 J 500 1100 J 370 < 500 < 1000 < 1000 < 500 J 440 81000 < 500 6600 7200 90007/08/98 TB 04974 7900 7300 < 500 3300 2400 24000 J 450 900 J 580 < 500 J 560 < 1000 < 500 J 430 130000 < 500 7800 7400 150008/07/98 TB 05397 J 1000 8000 < 2500 4000 J 1500 30000 J 500 J 1000 < 5000 < 2500 < 5000 < 5000 < 2500 < 5000 100000 < 2500 < 5000 9500 < 250009/10/98 TB 05785 1300 7100 < 500 3700 < 2000 E 30000 560 990 1100 < 500 < 1000 < 1000 < 500 J 560 84000 < 500 11000 9200 180010/11/98 TB 06123 2200 6200 < 1000 3200 < 4000 22000 < 1000 J 930 J 570 < 1000 < 2000 < 2000 < 1000 < 2000 71000 < 1000 7300 5900 J 75011/05/98 TB 06417 < 20000 3800 < 1000 1900 < 4000 18000 < 1000 J 600 J 350 < 1000 < 2000 < 2000 < 1000 < 2000 35000 < 1000 5600 4200 J 37012/04/98 TB 06853 J 2300 2900 < 500 1400 < 2000 12000 < 500 J 440 J 490 < 500 < 1000 < 1000 < 500 < 1000 39000 < 500 6100 2000 J 900

01/04/99 TB 07130 J 2100 3700 < 500 1700 < 2000 14000 J 290 540 J 680 < 500 < 1000 < 1000 < 500 J 250 36000 < 500 5000 3700 J 100002/01/99 TB 07353 < 10000 4500 < 500 2400 < 2000 20000 J 300 670 J 770 < 500 < 1000 < 1000 < 500 J 290 72000 < 500 6700 4300 J 1100

03/18/99 TB 07792 < 10000 4500 < 500 2400 < 2000 16000 J 330 660 J 740 < 500 < 1000 < 1000 < 500 J 290 53000 < 500 5500 3600 J 1100

04/12/99 TB 07990 < 10000 3700 < 500 1700 < 2000 15000 < 500 550 J 450 < 500 < 1000 < 1000 < 500 < 1000 29000 < 500 4500 3400 J 540

05/08/99 TB 08253 < 10000 3500 < 500 1700 < 2000 16000 < 500 530 J 450 < 500 < 1000 < 1000 < 500 < 1000 28000 < 500 4700 3100

06/05/99 TB 08570 < 10000 3800 < 500 1900 < 2000 17000 J 220 580 J 670 < 500 < 1000 < 1000 < 500 J 220 42000 < 500 5400 3700 J 700

07/06/99 TB 08887 < 10000 3800 < 500 1800 < 2000 15000 < 500 570 J 500 < 500 < 1000 < 1000 < 500 < 1000 52000 < 500 4500 3100 J 51008/12/99 TB 09234 < 1000 4300 < 500 1800 590 17000 J 270 610 570 < 500 < 5000 < 500 < 500 J 260 200000 < 500 4800 3500 J 53009/09/99 TB 09620 < 1000 3900 < 500 1900 < 500 18000 < 500 620 580 < 500 < 5000 < 500 < 500 < 500 65000 < 500 5200 3000 J 56010/07/99 TB 10009 J 800 4100 < 500 1900 840 17000 < 500 640 510 < 500 < 5000 < 500 < 500 < 500 76000 < 500 4800 3200 J 40011/11/99 TB 10431 2350 2640 < 250 980 970 9470 < 250 410 650 < 250 < 2500 < 250 < 250 < 250 42500 < 250 3580 2140 98012/04/99 TB 10632 2200 3200 < 250 1700 820 D 15000 250 520 700 < 250 < 2500 < 250 < 250 < 250 75000 < 250 4500 1400 900

01/06/00 TB 10872 2000 2500 < 400 1200 520 12000 < 400 J 390 440 < 400 < 4000 < 400 < 400 < 400 30000 < 400 3700 1500 J 33002/04/00 TB 11099 1900 3120 < 400 1330 1020 13000 < 400 520 690 < 400 < 4000 < 400 < 400 J 160 35000 < 400 4540 1510 J 89003/04/00 TB 11306 < 800 2200 < 400 950 < 400 10000 < 400 J 400 450 < 400 < 4000 < 400 < 400 < 400 < 8000 < 400 3200 1500 J 32004/06/00 TB 11503 2100 4500 < 400 1900 < 400 18000 J 360 750 900 < 400 < 4000 < 400 < 400 J 290 82000 < 400 5300 2600 J 88005/07/00 TB 11695 2550 3260 < 500 1580 < 500 15100 < 500 550 620 < 500 < 5000 < 500 < 500 < 500 62700 < 500 4300 1800 J 36006/07/00 TB 11925 2300 2500 < 500 1100 < 500 12000 < 500 J 410 J 500 < 500 < 5000 < 500 < 500 < 500 37000 < 500 3400 1800 < 50007/07/00 TB 12123 < 800 3200 < 400 1500 < 400 16000 < 400 530 670 < 400 < 4000 < 400 < 400 < 400 46000 < 400 4500 1700 J 40008/04/00 TB 12324 < 1000 3400 < 500 1700 < 500 19000 < 500 580 550 < 500 < 5000 < 500 < 500 < 500 41000 < 500 4600 1900 < 50010/09/00 TB 12746 < 1000 3700 < 500 1600 < 500 16000 < 500 550 1000 < 500 < 5000 < 500 < 500 < 500 < 10000 < 500 4700 2000 J 80012/07/00 TB 13379 2600 2700 < 400 1300 < 400 13000 < 400 420 720 < 400 < 4000 < 400 < 400 < 400 < 8000 < 400 4000 1100 J 410

02/14/01 TB 13797 < 800 2200 < 400 860 540 9900 < 400 < 400 610 < 400 < 4000 < 400 < 400 < 400 19000 < 400 2900 880 J 80

03/13/01 TB 14002 < 800 2300 < 400 1200 1100 11000 < 400 < 400 < 400 < 400 < 4000 < 400 < 400 < 400 33000 < 400 3400 580 J 560

05/02/01 TB 14293 11000 2000 < 400 910 780 8700 < 400 < 400 700 < 400 < 4000 < 400 < 400 < 400 34000 < 400 2900 520 J 480

08/17/01 TB 14998 1200 1700 < 125 660 2500 5100 < 125 190 370 < 125 J 550 < 125 < 125 < 125 D 200000 < 125 1400 370 J 350

11/14/01 TB 15667 1400 1400 < 200 750 1700 5500 < 200 J 180 480 < 200 < 2000 < 200 < 200 < 200 46000 < 200 1800 410 J 440

02/03/02 TB 16318 2400 1400 < 200 810 1200 5300 J 100 200 360 < 200 J 240 < 200 < 200 < 200 D 85000 < 200 1500 270 J 36005/08/02 TB 16952 1600 1000 < 200 530 850 4500 < 200 J 140 420 < 200 < 2000 < 200 < 200 < 200 28000 < 200 1600 230 J 400

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 156 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

BW-030JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: Main Waste

07/17/02 TB 17452 1500 1300 < 200 700 2600 4800 J 84 J 180 290 < 200 J 450 < 200 < 200 < 200 62000 < 200 1300 310 J 36008/17/02 TB 17713 1400 1900 < 125 870 3100 6300 J 110 250 280 < 125 J 550 < 125 < 125 J 76 61000 < 125 1500 380 J 32511/06/02 TB 18139 2600 1600 < 200 760 3300 6100 < 200 J 160 240 < 200 J 520 < 200 < 200 < 200 D 185000 < 200 1480 J 200 J 320

02/26/03 TB 18784 2200 1500 < 125 810 2000 D 5800 J 110 210 400 < 125 J 330 < 125 < 125 J 76 D 53000 < 125 2100 330 42505/12/03 TB 19250 1270 1040 < 125 405 < 375 5370 < 125 125 457 < 125 < 500 < 100 < 125 < 125 22500 < 125 1770 J 123 48008/20/03 TB 19698 1100 1430 < 125 450 < 375 6200 < 125 150 300 < 125 < 500 < 100 < 125 < 125 18300 < 125 1500 J 100 J 20011/13/03 TB 20024 1980 704 < 80 304 1580 3760 < 80 < 80 320 < 80 J 448 < 64 < 80 < 80 25500 < 80 1260 J 64 384

02/26/04 TB 20502 602 1840 < 125 199 J 375 7480 < 125 < 125 216 < 125 < 500 < 100 < 125 < 125 44700 < 125 1700 J 187 J 18704/13/04 TB 20686 837 624 < 80 176 J 298 3100 < 80 < 80 232 < 80 < 320 < 64 < 80 < 80 13400 < 80 912 J 70 326

05/19/04 TB 20735 784 506 < 50 140 < 150 2620 < 50 < 50 64 < 50 < 200 < 40 < 50 < 50 9620 < 50 261 J 39 244

06/29/04 TB 20833 506 374 < 50 87 < 150 1880 < 50 < 50 113 < 50 < 200 < 40 < 50 < 50 5020 < 50 405 J 25 199

08/26/04 TB 20981 493 364 < 50 71 < 150 1510 < 50 < 50 < 50 < 50 < 200 < 40 < 50 < 50 9460 < 50 102 J 27 J 74

02/02/05 TB 21870 725 1250 < 50 194 < 150 5370 < 50 < 50 106 < 50 < 200 < 40 < 50 < 50 23400 < 50 415 J 74 215

03/08/05 TB 22239 2220 2490 < 160 738 J 713 13300 < 160 162 578 < 160 < 640 < 128 < 160 < 160 38700 < 160 3350 J 276 62204/12/05 TB 22338 734 1590 < 250 < 250 < 750 7060 < 250 < 250 < 250 < 250 < 1000 < 200 < 250 < 250 53900 < 250 782 < 100 J 174

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 157 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

BW-032JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: Main Waste

05/02/98 TB 04458 < 250 2600 < 250 1500 < 500 5900 440 J 190 < 250 < 500 < 250 5500 < 250 2300 J 340 58006/03/98 TB 04679 870 < 250 350 < 1000 3000 < 250 J 110 < 500 < 250 < 500 < 500 < 250 < 500 14000 < 250 < 500 J 330 < 25007/08/98 TB 04975 < 500 1200 < 250 790 < 1000 3200 < 250 J 180 < 500 < 250 < 500 < 500 < 250 < 500 17000 < 250 500 360 < 25009/10/98 TB 05786 J 160 740 < 100 530 < 400 2200 J 40 J 94 < 200 < 100 < 200 < 200 < 100 < 200 28000 < 100 240 J 180 J 11011/03/98 TB 06367 < 1000 280 < 50 170 < 200 840 < 50 < 50 < 100 < 50 < 100 < 100 < 50 < 100 < 1000 < 50 J 64 J 47 J 2412/04/98 TB 06854 J 31 170 < 5 82 < 20 390 < 5 8 < 10 < 5 < 10 < 10 < 5 J 6 12000 < 5 18 23 20

01/04/99 TB 07131 < 500 110 < 25 57 < 100 190 < 25 J 7 J 17 < 25 < 50 < 50 < 25 < 50 6500 < 25 J 15 J 17 J 3102/01/99 TB 07354 < 200 310 < 10 180 < 40 D 730 13 26 J 7 < 10 < 20 < 20 J 5 J 14 D 14000 J 6 97 J 28 9005/11/99 TB 08267 1400 380 < 25 440 < 100 1100 < 25 66 J 15 < 25 < 50 < 50 25 < 50 D 10000 J 12 130 J 6308/12/99 TB 09235 80 150 < 5 40 < 5 87 J 2 J 4 < 5 < 5 < 50 < 5 J 3 J 3 D 14000 < 5 5 7 27

10/07/99 TB 10010 48 110 < 5 39 10 85 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 D 7800 < 5 21 J 5 34

11/11/99 TB 10432 310 130 < 10 75 < 10 210 < 10 12 15 < 10 < 100 < 10 J 9 < 10 5250 < 10 160 < 10 230

12/04/99 TB 10633 180 81 < 5 24 23 74 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 D 9800 < 5 12 < 5 46

05/07/00 TB 11696 < 10 19 < 5 < 5 < 5 J 3 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 D 3000 < 5 < 5 < 5 < 508/04/00 TB 12325 < 10 17 < 5 6 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 990 < 5 < 5 < 5 < 510/13/00 TB 12795 < 10 20 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 D 1900 < 5 < 5 < 5 J 312/07/00 TB 13380 < 10 9 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 800 < 5 < 5 < 5 < 5

02/14/01 TB 13798 < 10 39 < 5 13 < 5 J 2 < 5 J 5 < 5 < 5 < 50 < 5 < 5 < 5 1500 < 5 < 5 J 4 J 105/01/01 TB 14279 < 10 130 < 5 45 < 5 15 < 5 21 < 5 < 5 < 50 < 5 < 5 < 5 D 3300 < 5 10 22 606/01/01 TB 14553 12 83 < 5 30 < 5 < 5 < 5 17 < 5 < 5 < 50 < 5 < 5 < 5 2100 < 5 < 5 5 < 507/03/01 TB 14690 < 10 130 < 5 55 < 5 9 J 3 21 < 5 < 5 < 50 < 5 J 4 < 5 130 < 5 7 11 1208/16/01 TB 14985 < 10 31 < 5 9 < 5 < 5 < 5 7 < 5 < 5 < 50 < 5 J 2 < 5 520 < 5 < 5 < 5 < 511/09/01 TB 15584 < 10 37 < 5 9 < 5 J 3 < 5 6 < 5 < 5 < 50 < 5 J 3 < 5 830 < 5 < 5 < 5 < 5

02/09/02 TB 16388 < 10 7 < 5 J 2 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 670 < 5 < 5 < 5 < 504/05/02 TB 16793 64 7 < 5 J 3 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 800 < 5 < 5 < 5 < 505/08/02 TB 16953 < 10 37 < 5 11 < 5 J 3 < 5 6 < 5 < 5 < 50 < 5 < 5 < 5 1300 < 5 < 5 6 < 506/14/02 TB 17308 25 8 < 5 J 3 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 1300 < 5 < 5 < 5 < 508/16/02 TB 17703 J 2 J 5 < 5 J 3 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 960 < 5 < 5 < 5 < 511/05/02 TB 18130 < 10 J 3 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 1500 < 5 < 5 < 5 < 5

02/25/03 TB 18777 < 10 6 < 5 J 3 < 5 < 5 < 5 < 5 < 5 < 5 < 50 J 2 < 5 < 5 1400 < 5 < 5 < 5 < 5

05/12/03 TB 19251 < 5 12 < 5 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 905 < 5 < 5 < 2 < 508/19/03 TB 19683 < 5 6 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 1120 < 5 < 5 < 2 < 511/17/03 TB 20057 < 5 6 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 729 < 5 < 5 < 2 < 5

02/18/04 TB 20410 < 5 6 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 471 < 5 < 5 < 2 < 508/26/04 TB 20982 < 5 10 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 1440 < 5 < 5 < 2 < 510/14/04 TB 21298 < 5 25 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 371 < 5 < 5 < 2 < 5

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 158 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

BW-032JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: Main Waste

11/18/04 TB 21493 < 5 21 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 919 < 5 < 5 < 2 < 512/07/04 TB 21551 < 5 28 < 5 14 < 15 < 5 < 5 13 < 5 < 5 < 20 < 4 < 5 < 5 172 < 5 < 5 < 2 < 5

01/20/05 TB 21860 < 5 13 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 549 < 5 < 5 < 2 < 502/02/05 TB 21871 < 5 25 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 390 < 5 < 5 < 2 < 504/14/05 TB 22372 < 5 11 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 965 < 5 < 5 < 2 < 5

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 159 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

BW-038JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: Main Waste

04/17/98 TB 04342 < 10 240 < 10 29 B 31 < 10 32 < 10 < 10 < 20 < 10 E 2800 < 10 < 10 33 < 1005/02/98 TB 04457 < 500 4000 < 500 1500 B 4700 13000 < 500 < 500 < 500 1300 < 500 E 140000 < 500 2500 1800 J 36006/03/98 TB 04697 3500 < 500 1000 B 2300 10000 < 500 J 200 < 1000 < 500 < 1000 < 1000 < 500 < 1000 130000 < 500 1800 2400 < 50007/08/98 TB 04976 J 360 2000 < 100 530 420 D 3900 J 90 190 J 98 < 100 < 200 < 200 < 100 J 120 D 33000 < 100 1000 1000 27008/07/98 TB 05398 < 500 1800 < 250 500 J 300 4600 < 250 < 250 < 500 < 250 < 500 < 500 < 250 < 500 45000 < 250 550 950 < 25009/10/98 TB 05787 J 130 1300 < 100 400 J 180 3800 J 51 J 87 J 63 J 42 < 200 < 200 < 100 J 76 25000 < 100 610 870 J 11010/11/98 TB 06124 J 150 1100 < 100 400 J 240 2900 < 100 J 76 J 45 < 100 < 200 < 200 < 100 < 200 25000 < 100 480 580 < 10011/03/98 TB 06368 < 2000 1100 < 100 430 < 400 3900 < 100 J 83 J 40 < 100 < 200 < 200 < 100 < 200 38000 < 100 620 600 J 3312/04/98 TB 06855 < 2000 520 < 100 240 < 400 1300 < 100 J 41 < 200 < 100 < 200 < 200 < 100 < 200 13000 < 100 250 J 250 < 100

01/04/99 TB 07132 < 2000 490 < 100 160 < 400 1300 < 100 J 31 J 33 < 100 < 200 < 200 < 100 < 200 7000 < 100 290 J 280 J 37

02/01/99 TB 07355 < 1000 820 < 50 300 240 2400 J 26 50 J 44 J 28 < 100 < 100 < 50 J 39 23000 < 50 490 360 J 67

05/11/99 TB 08268 < 1000 770 < 50 130 < 200 1400 < 50 55 J 13 < 50 < 100 < 100 < 50 < 100 9600 < 50 250 230

08/12/99 TB 09236 < 100 630 < 50 110 < 50 1700 < 50 J 15 J 17 J 18 < 500 < 50 < 50 J 14 15000 < 50 180 130 J 48

10/08/99 TB 10013 < 160 570 < 80 140 190 2100 < 80 < 80 J 32 < 80 < 800 < 80 < 80 < 80 15000 < 80 370 150 J 32

11/11/99 TB 10433 260 1040 < 50 160 140 D 3960 < 50 J 45 95 < 50 < 500 < 50 < 50 50 12080 < 50 930 170 32012/04/99 TB 10634 240 480 < 50 160 200 1700 < 50 < 50 52 < 50 < 500 < 50 < 50 < 50 12000 < 50 370 130 < 50

02/04/00 TB 11100 100 290 < 25 100 570 970 < 25 < 25 J 25 J 20 < 250 < 25 < 25 < 25 9300 < 25 190 100 J 6004/06/00 TB 11504 < 100 500 < 50 180 < 50 1900 < 50 < 50 J 47 < 50 < 500 < 50 < 50 < 50 13000 < 50 340 180 J 8005/07/00 TB 11697 310 470 < 50 170 < 50 2220 < 50 < 50 52 < 50 < 500 < 50 < 50 < 50 E 25700 < 50 500 200 J 5006/07/00 TB 11926 < 100 440 < 50 190 < 50 1800 < 50 < 50 < 50 < 50 < 500 < 50 < 50 < 50 12000 < 50 330 200 < 5007/07/00 TB 12124 < 100 350 < 50 150 < 50 1700 < 50 < 50 < 50 < 50 < 500 < 50 < 50 < 50 12000 < 50 270 130 < 5008/04/00 TB 12326 < 200 480 < 100 200 < 100 2600 < 100 < 100 < 100 < 100 < 1000 < 100 < 100 < 100 23000 < 100 480 140 < 10010/13/00 TB 12796 < 50 160 < 25 46 < 25 650 < 25 < 25 J 13 < 25 < 250 < 25 < 25 < 25 7200 < 25 97 < 25 J 20

02/14/01 TB 13799 < 100 240 < 50 < 50 < 50 890 < 50 < 50 < 50 < 50 < 500 < 50 < 50 < 50 8100 < 50 130 < 50 J 3005/01/01 TB 14280 < 20 94 < 10 29 18 350 < 10 < 10 11 < 10 < 100 < 10 < 10 < 10 D 17000 < 10 58 12 2408/16/01 TB 14986 170 570 < 50 200 < 50 2100 < 50 51 J 49 < 50 < 500 < 50 < 50 < 50 D 26000 < 50 360 150 J 6011/09/01 TB 15585 240 450 < 10 210 150 D 1600 13 46 44 24 J 41 < 10 < 10 11 D 11000 < 10 320 130 86

02/09/02 TB 16389 J 74 280 < 40 71 100 1000 < 40 J 17 J 22 < 40 < 400 < 40 < 40 < 40 12000 < 40 150 J 29 J 4005/08/02 TB 16954 190 600 < 50 210 < 50 1800 < 50 J 47 < 50 J 21 < 500 < 50 < 50 < 50 19000 < 50 J 22 57 J 4006/14/02 TB 17309 86 360 < 40 140 140 1200 < 40 < 40 J 29 < 40 < 400 < 40 < 40 < 40 11000 < 40 210 49 J 48

08/16/02 TB 17704 J 5 42 < 5 10 < 5 91 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 2200 < 5 J 4 J 1 J 3

11/05/02 TB 18131 14 51 < 5 13 < 5 140 < 5 < 5 J 3 < 5 < 50 < 5 < 5 < 5 D 3350 < 5 11 J 2 J 5

02/25/03 TB 18778 180 220 < 5 33 50 D 1000 J 2 9 29 < 5 J 14 J 2 < 5 J 3 D 7700 < 5 200 11 51

05/12/03 TB 19252 337 307 < 50 < 50 < 150 1890 < 50 < 50 84 < 50 < 200 < 40 < 50 < 50 9350 < 50 523 < 20 J 79

08/19/03 TB 19684 289 293 < 25 57 < 75 2030 < 25 < 25 61 < 25 < 100 < 20 < 25 < 25 10500 < 25 448 < 10 12111/17/03 TB 20058 245 155 < 25 < 25 J 175 1210 < 25 < 25 40 < 25 < 100 < 20 < 25 < 25 13500 < 25 285 J 15 80

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 160 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

BW-038JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: Main Waste

02/18/04 TB 20411 333 195 < 40 < 40 J 266 1470 < 40 < 40 73 < 40 < 160 < 32 < 40 < 40 14400 < 40 481 < 16 J 7708/26/04 TB 20983 201 58 < 20 < 20 J 65 553 < 20 < 20 22 < 20 < 80 < 16 < 20 < 20 10500 < 20 121 < 8 J 3010/14/04 TB 21299 224 73 < 5 20 86 684 < 5 < 5 37 < 5 < 20 J 4 < 5 < 5 12300 < 5 210 J 5 5911/18/04 TB 21494 132 57 < 5 18 J 21 271 < 5 < 5 12 < 5 < 20 J 4 < 5 < 5 8660 < 5 77 J 2 2812/07/04 TB 21552 157 65 < 5 35 J 25 438 < 5 23 16 < 5 < 20 J 4 < 5 < 5 8720 < 5 102 J 5 43

01/20/05 TB 21861 130 63 < 10 15 < 30 466 < 10 < 10 19 < 10 < 40 < 8 < 10 < 10 5170 < 10 106 < 4 3702/02/05 TB 21872 132 54 < 10 15 < 30 451 < 10 < 10 < 10 < 10 < 40 < 8 < 10 < 10 5850 < 10 < 10 < 4 2206/21/05 TB 22732 37 16 < 5 7 < 15 112 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 3210 < 5 7 < 2 J 3

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 161 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

BW-040JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: Main Waste

04/16/98 TB 04339 < 100 J 96 < 100 760 2000 390 410 < 100 < 100 340 < 100 16000 < 100 120 < 200 < 10005/03/98 TB 04460 < 250 2300 < 250 1900 J 470 6500 750 < 250 < 250 < 500 < 250 23000 < 250 760 2600 < 25006/03/98 TB 04685 D 2700 < 100 2100 B 810 D 8100 350 780 J 110 J 57 220 < 200 < 100 280 25000 J 54 1400 D 5400 55007/08/98 TB 04978 < 500 2200 < 250 870 J 380 5700 J 160 430 < 500 < 250 < 500 < 500 < 250 J 130 21000 < 250 1200 2100 28008/07/98 TB 05400 < 500 2300 < 250 1100 J 350 7200 J 200 550 J 50 < 250 < 500 < 500 < 250 J 100 35000 < 250 1200 2800 J 30009/10/98 TB 05789 280 1500 < 100 790 < 400 5200 130 380 J 89 < 100 < 200 < 200 < 100 J 110 14000 < 100 800 1600 52010/11/98 TB 06126 730 1900 < 250 1200 < 1000 5100 < 250 650 J 150 < 250 < 500 < 500 < 250 < 500 12000 < 250 1100 1200 94011/05/98 TB 06418 < 5000 670 < 250 520 < 1000 2000 < 250 340 < 500 < 250 < 500 < 500 < 250 < 500 J 4000 < 250 J 390 J 510 J 31012/04/98 TB 06857 J 130 440 < 25 300 < 100 D 720 < 25 200 J 26 < 25 < 50 < 50 < 25 J 21 2800 < 25 150 230 340

01/04/99 TB 07134 J 100 400 < 25 220 < 100 790 34 130 J 25 < 25 < 50 < 50 < 25 J 27 3200 < 25 150 290 460

02/01/99 TB 07357 < 500 270 < 25 870 650 1100 58 430 J 26 J 16 160 < 50 < 25 J 25 24000 J 9 220 99 290

05/08/99 TB 08255 < 1000 430 < 50 310 J 97 1200 J 33 170 J 21 < 50 < 100 < 100 < 50 J 22 3100 < 50 110 230

08/12/99 TB 09238 1200 900 < 200 5100 2000 3300 420 2900 220 J 91 < 2000 < 200 < 200 J 96 75000 < 200 1300 280 4900

11/11/99 TB 10435 1900 740 < 25 D 2040 270 D 3220 260 D 1810 360 39 < 250 < 25 < 25 89 D 10700 30 1400 300 D 3650

02/04/00 TB 11102 600 420 < 40 190 < 40 1660 < 40 64 < 40 < 40 < 400 < 40 < 40 < 40 3800 < 40 71 190 70004/06/00 TB 11505 1300 690 < 25 D 2500 < 25 D 3100 190 960 95 25 < 250 < 25 < 25 56 5400 < 25 630 220 347005/07/00 TB 11699 1540 540 < 25 D 1240 < 25 D 2730 150 280 49 < 25 < 250 < 25 < 25 41 4230 < 25 350 180 338006/07/00 TB 11928 < 160 460 < 80 350 < 80 1700 < 80 220 < 80 < 80 < 800 < 80 < 80 < 80 2000 < 80 < 80 190 < 8008/04/00 TB 12328 900 370 < 100 320 < 100 < 100 220 < 100 < 100 < 1000 < 100 < 100 < 100 J 89 110 62010/09/00 TB 12748 2500 680 < 100 580 < 100 3000 < 100 < 100 410 < 100 < 1000 < 100 < 100 < 100 D 74000 < 100 940 190 382011/03/00 TB 13108 1000 270 < 25 110 < 25 900 < 25 70 < 25 < 25 < 250 < 25 < 25 < 25 < 500 < 25 J 16 72 18011/03/00 TB 13097 11012/07/00 TB 13381 < 50 230 < 25 68 < 25 720 < 25 28 < 25 < 25 < 250 < 25 < 25 < 25 4100 < 25 < 25 54 140

02/14/01 TB 13801 < 100 190 < 50 52 < 50 630 < 50 < 50 < 50 < 50 < 500 < 50 < 50 < 50 1400 < 50 < 50 < 50 29005/01/01 TB 14281 440 280 < 25 210 < 25 850 < 25 110 27 < 25 < 250 < 25 < 25 < 25 8000 < 25 45 50 44008/16/01 TB 14987 1100 390 < 50 350 110 1300 < 50 230 90 < 50 < 500 < 50 < 50 < 50 D 7300 < 50 110 51 119011/09/01 TB 15586 390 170 < 25 130 < 25 540 < 25 100 < 25 < 25 < 250 < 25 < 25 < 25 3100 < 25 28 J 21 295

02/09/02 TB 16390 340 270 < 20 120 30 590 J 10 63 J 15 < 20 < 200 < 20 < 20 < 20 5000 < 20 25 22 33205/07/02 TB 16927 360 270 < 25 130 55 680 < 25 64 < 25 < 25 < 250 < 25 < 25 < 25 5900 < 25 J 20 J 19 18508/16/02 TB 17705 590 330 < 20 240 < 20 800 29 180 42 J 4 < 200 < 20 J 6 J 9 6900 < 20 51 33 604

11/05/02 TB 18132 250 140 < 10 78 12 290 J 6 40 14 < 10 < 100 < 10 J 4 < 10 D 6700 < 10 14 J 6 200

02/14/03 TB 18712 D 540 220 < 10 80 11 E 660 J 6 41 14 < 10 < 100 < 10 J 3 < 5 D 6100 < 10 21 14 226

05/12/03 TB 19253 315 203 < 20 175 < 60 635 < 20 119 22 < 20 < 80 < 16 < 20 < 20 5810 < 20 20 < 8 288

08/19/03 TB 19685 365 226 < 25 101 < 75 1180 < 25 71 < 25 < 25 < 100 < 20 < 25 < 25 7080 < 25 57 < 10 262

11/17/03 TB 20059 304 188 < 20 76 < 60 1340 < 20 48 < 20 < 20 < 80 < 16 < 20 < 20 12500 < 20 56 J 12 14012/15/03 TB 20184 390 255 < 25 105 J 155 1600 < 25 65 < 25 < 25 < 100 < 20 < 25 < 25 22600 < 25 120 J 15 130

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 162 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

BW-040JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: Main Waste

02/18/04 TB 20412 568 346 < 40 472 < 120 1690 160 512 < 40 628 < 160 < 32 < 40 40 16100 < 40 193 J 64 67504/13/04 TB 20687 873 265 < 25 74 J 125 1660 < 25 58 116 < 25 < 100 < 20 < 25 < 25 16400 < 25 226 J 12 72005/19/04 TB 20736 243 112 < 20 51 < 60 899 < 20 33 < 20 < 20 < 80 < 16 < 20 < 20 15200 < 20 60 < 8 10906/29/04 TB 20834 399 132 < 20 64 < 60 1450 < 20 52 68 < 20 < 80 < 16 < 20 < 20 10200 < 20 227 J 10 30208/26/04 TB 20984 246 106 < 20 79 < 60 1790 < 20 57 32 < 20 < 80 < 16 < 20 < 20 16500 < 20 164 < 8 236

02/02/05 TB 21873 796 287 < 50 1260 < 150 1040 76 637 < 50 < 50 < 200 < 40 < 50 < 50 43600 < 50 93 J 25 87405/06/05 TB 22472 297 124 < 20 330 < 60 798 27 215 < 20 < 20 < 80 < 16 < 20 < 20 16900 < 20 < 20 J 14 136

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 163 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

BW-047RJUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: Main Waste

07/14/00 TB 12156 < 50 160 < 25 160 < 25 D 1100 < 25 71 < 25 < 25 < 250 < 25 < 25 < 25 < 50 < 25 51 31 J 100

02/14/01 TB 13803 200 110 < 5 42 24 D 510 7 13 < 5 < 5 < 50 < 5 6 < 5 3500 < 5 32 28 8008/31/01 TB 15181 110 340 < 25 59 < 25 890 < 25 J 25 J 13 < 25 < 250 < 25 < 25 < 25 2000 < 25 170 J 23 8011/15/01 TB 15679 12 45 < 5 7 < 5 24 < 5 J 4 < 5 < 5 < 50 < 5 6 < 5 750 < 5 < 5 5 10

02/10/02 TB 16397 < 20 J 5 < 10 < 10 < 10 J 2 < 10 < 10 < 10 < 10 < 100 < 10 < 10 < 10 280 < 10 < 10 < 10 < 1008/17/02 TB 17714 16 240 < 5 31 < 5 240 7 36 < 5 J 2 < 50 < 5 J 3 10 680 J 2 22 33 J 1311/26/02 TB 18320 J 6 330 < 5 110 19 D 250 12 65 < 5 J 5 < 50 < 5 8 14 D 42000 5 7 20 40

05/19/03 TB 19293 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 56 < 5 < 5 < 2 < 508/21/03 TB 19718 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

11/18/03 TB 20067 14 9 < 5 < 5 < 15 27 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 473 < 5 < 5 J 2 J 3

02/26/04 TB 20492 < 5 65 < 5 12 < 15 < 5 < 5 9 < 5 < 5 < 20 < 4 < 5 < 5 551 < 5 < 5 J 4 < 508/26/04 TB 20986 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 1500 < 5 < 5 < 2 < 5

02/02/05 TB 21875 < 5 295 < 5 7 < 15 52 < 5 9 < 5 < 5 < 20 < 4 < 5 < 5 3880 < 5 < 5 J 2 1503/08/05 TB 22240 33 122 < 5 21 < 15 298 5 < 5 < 5 < 5 < 20 J 6 < 5 < 5 46700 < 5 7 17 1404/12/05 TB 22339 < 10 384 < 10 45 < 30 18 < 10 < 10 < 10 < 10 < 40 < 8 < 10 < 10 33100 < 10 < 10 < 4 < 10

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 164 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

BW-050JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: Main Waste

11/16/99 TB 10463 < 5000 < 2500 < 2500 48700 9300 < 2500 3100 25600 < 2500 < 2500 74000 < 2500 < 2500 < 2500 224000 < 2500 < 2500 < 2500 < 2500

01/06/00 TB 10877 < 160 < 80 < 80 2100 180 < 80 97 780 < 80 93 < 800 < 80 < 80 < 80 14000 < 80 < 80 < 80 < 8002/04/00 TB 11103 < 100 J 43 < 50 1810 < 50 J 20 100 850 < 50 82 < 500 < 50 < 50 < 50 10400 < 50 < 50 < 50 < 5003/05/00 TB 11315 < 100 < 50 < 50 1420 < 50 < 50 < 50 520 < 50 < 50 < 500 < 50 < 50 < 50 10000 < 50 < 50 < 50 < 5004/06/00 TB 11507 < 100 J 35 < 50 690 < 50 < 50 < 50 D 2100 < 50 92 < 500 < 50 < 50 < 50 D 40000 < 50 < 50 < 50 < 5010/12/00 TB 12791 < 50 32 < 25 820 < 25 < 25 50 490 < 25 < 25 < 250 < 25 < 25 < 25 5300 < 25 < 25 < 25 < 2512/07/00 TB 13382 < 10 20 < 5 D 560 < 5 10 39 D 240 < 5 16 < 50 < 5 < 5 < 5 D 7500 < 5 < 5 < 5 < 5

02/14/01 TB 13804 < 10 14 < 5 160 24 < 5 10 88 < 5 < 5 < 50 < 5 < 5 < 5 D 4600 < 5 < 5 5 J 105/01/01 TB 14282 < 50 < 25 < 25 660 32 < 25 45 320 < 25 < 25 < 250 < 25 < 25 < 25 9100 < 25 < 25 < 25 < 25

08/16/01 TB 14989 1600 < 80 < 80 160 1500 < 80 < 80 92 < 80 < 80 < 800 < 80 < 80 < 80 D 220000 < 80 < 80 < 80 < 8011/09/01 TB 15588 < 50 85 < 25 D 3100 D 1900 82 340 D 1800 < 25 210 550 < 25 < 25 46 D 47000 < 25 25 27 < 25

02/09/02 TB 16392 110 12 < 5 210 10 5 15 94 < 5 J 4 < 50 < 5 < 5 J 2 D 5000 < 5 < 5 J 4 J 6

05/07/02 TB 16929 J 130 J 48 < 100 260 330 J 49 140 780 < 100 140 < 1000 < 100 < 100 < 100 29000 < 100 < 100 < 100 < 10007/08/02 TB 17399 J 22 29 < 20 740 42 < 20 64 500 < 20 J 20 < 200 < 20 < 20 < 20 D 15000 < 20 < 20 < 20 < 2007/08/02 TB 17392 < 1008/16/02 TB 17707 < 25 23 < 13 440 < 13 < 13 46 350 < 13 13 < 125 < 13 < 13 J 7 D 8200 < 13 < 13 J 5 < 13

03/12/03 TB 18984 85 620 < 13 D 830 D 6400 440 D 880 D 1800 J 6 D 1400 390 26 13 78 D 670000 < 13 86 450 3505/12/03 TB 19254 < 200 720 < 200 2320 8160 1560 1240 520 < 200 3360 J 1040 < 160 < 200 200 548000 < 200 400 720 J 20008/20/03 TB 19699 475 2100 < 125 14200 36800 3580 1530 625 125 30400 10200 < 100 < 125 950 1820000 < 125 1100 2700 107509/23/03 TB 19846 225 1750 < 125 32600 47600 2580 2580 11400 < 125 22000 J 7400 < 100 < 125 825 1140000 < 125 750 1650 80010/07/03 TB 19879 256 1470 < 160 37500 22500 1890 2530 13500 < 160 25000 4580 < 128 < 160 736 1160000 < 160 608 1060 96011/19/03 TB 20074 288 1310 < 160 7740 J 21600 J 1730 1890 1180 < 160 15200 3620 < 128 < 160 480 1180000 < 160 576 1280 71612/02/03 TB 20095 < 500 931 < 500 3700 16400 1090 871 500 < 500 2450 J 2980 < 400 < 500 < 500 880000 < 500 < 500 1120 J 288

02/26/04 TB 20518 121 618 < 50 221 5550 365 192 171 < 50 208 668 J 60 < 50 106 1450000 < 50 51 250 18504/13/04 TB 20688 < 100 336 < 100 1290 3480 529 460 3180 < 100 1940 J 440 < 80 < 100 < 100 1150000 < 100 110 J 153 J 13505/19/04 TB 20737 200 699 < 100 9790 9400 960 1330 2890 < 100 8840 J 566 < 80 < 100 277 1290000 < 100 195 793 26606/29/04 TB 20835 < 400 1160 < 400 11100 16000 2200 1380 606 < 400 13800 J 2690 < 320 < 400 < 400 1370000 < 400 < 400 1150 J 36607/22/04 TB 20862 < 400 1080 < 400 5210 J 21700 2070 1040 < 400 < 400 1050 4800 < 320 < 400 409 1620000 < 400 573 1820 J 38508/27/04 TB 21004 < 800 1900 < 800 23500 31400 3000 1660 1810 < 800 20500 7040 < 640 < 800 < 800 1860000 < 800 917 2770 7575

02/07/05 TB 21913 < 40 52 < 40 60 1880 631 < 40 71 51 < 40 396 J 39 < 40 < 40 956000 < 40 142 J 16 532

03/08/05 TB 22241 204 507 < 40 861 2990 504 517 220 < 40 3350 567 J 40 < 40 152 1050000 < 40 115 435 338

05/12/05 TB 22506 < 100 355 < 100 235 4600 1540 < 100 < 100 < 100 J 116 928 < 80 < 100 < 100 1300000 < 100 299 J 59 445

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 165 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

BW-051JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: Main Waste

11/18/99 TB 10501 1400 250 < 200 7300 2600 370 540 5100 < 200 < 200 < 2000 < 200 < 200 < 200 71000 < 200 < 200 J 180 < 200

01/06/00 TB 10878 < 20 74 < 10 110 < 10 390 < 10 43 < 10 < 10 < 100 < 10 < 10 < 10 420 < 10 < 10 23 J 802/04/00 TB 11104 18 82 < 5 42 < 5 D 270 5 22 < 5 J 2 < 50 < 5 < 5 5 1110 < 5 < 5 25 J 903/05/00 TB 11316 < 10 97 < 5 50 < 5 120 < 5 27 < 5 < 5 < 50 < 5 < 5 J 5 1200 < 5 < 5 31 < 504/06/00 TB 11508 < 10 77 < 5 47 < 5 D 370 6 32 < 5 J 3 < 50 < 5 < 5 J 4 930 < 5 < 5 28 J 508/04/00 TB 12329 < 20 46 < 10 48 < 10 210 < 10 32 < 10 15 < 100 < 10 < 10 < 10 950 < 10 < 10 18 < 1010/10/00 TB 12756 36 52 < 5 41 < 5 220 < 5 26 < 5 12 < 50 < 5 < 5 < 5 D 2200 < 5 < 5 19 J 1

02/14/01 TB 13805 < 20 32 < 10 16 < 10 320 < 10 19 < 10 < 10 < 100 < 10 < 10 < 10 1600 < 10 15 11 < 1005/01/01 TB 14283 150 25 < 5 9 < 5 28 < 5 J 5 < 5 < 5 < 50 < 5 < 5 < 5 580 < 5 < 5 J 4 J 3

08/16/01 TB 14990 61 120 < 10 24 56 D 920 < 10 < 10 17 < 10 < 100 < 10 < 10 < 10 < 10000 < 10 140 14 42

11/09/01 TB 15589 55 50 < 5 29 < 5 D 320 J 3 16 < 5 6 < 50 < 5 < 5 J 2 1800 < 5 11 11 J 5

02/09/02 TB 16393 J 9 27 < 5 41 < 5 18 J 2 16 < 5 7 < 50 < 5 < 5 < 5 920 < 5 < 5 J 5 J 6

05/07/02 TB 16930 J 5 53 < 5 50 < 5 130 J 4 35 J 4 13 < 50 < 5 < 5 J 3 1500 < 5 27 16 J 9

07/08/02 TB 17393 < 1007/08/02 TB 17400 < 10 21 < 5 6 < 5 8 < 5 J 2 < 5 < 5 < 50 < 5 < 5 < 5 310 < 5 < 5 J 2 < 508/16/02 TB 17708 J 3 26 < 5 23 < 5 J 2 < 5 10 < 5 6 < 50 < 5 < 5 < 5 270 < 5 < 5 J 2 < 5

03/14/03 TB 19025 < 10 66 < 5 56 < 5 J 1 50 D 620 < 5 240 < 50 < 5 < 5 15 560 < 5 < 5 6 < 508/20/03 TB 19691 < 5 170 < 5 55 < 15 < 5 198 2820 < 5 14 < 20 J 7 < 5 62 4560 < 5 < 5 J 310/07/03 TB 19880 < 20 100 < 20 32 < 60 < 20 100 1600 < 20 < 20 < 80 < 16 < 20 36 1820 < 20 < 20 < 8 < 2012/02/03 TB 20096 < 20 64 < 20 20 < 60 < 20 92 1400 < 20 < 20 < 80 < 16 < 20 24 620 < 20 < 20 < 8 < 20

02/26/04 TB 20519 < 20 199 < 20 51 < 60 < 20 218 2500 < 20 < 20 < 80 < 16 < 20 73 1740 < 20 < 20 < 8 < 2008/27/04 TB 21005 < 40 214 < 40 202 < 120 < 40 368 1960 < 40 439 < 160 < 32 < 40 66 9910 < 40 < 40 J 32 < 4010/14/04 TB 21300 < 10 189 < 10 90 < 30 54 334 396 < 10 179 < 40 < 8 < 10 42 6540 < 10 < 10 76 < 1011/22/04 TB 21502 < 10 66 < 10 334 < 30 < 10 53 418 < 10 51 < 40 < 8 < 10 17 303 < 10 < 10 < 4 < 1012/07/04 TB 21553 < 10 111 < 10 600 < 30 11 99 987 < 10 155 < 40 < 8 < 10 37 1120 < 10 < 10 < 4 < 10

02/07/05 TB 21914 < 25 342 < 25 203 < 75 < 25 256 1580 < 25 J 27 < 100 < 20 < 25 130 1200 < 25 < 25 < 10 < 2506/21/05 TB 22733 < 40 447 < 40 1360 < 120 391 605 723 < 40 299 < 160 < 32 < 40 68 61300 < 40 < 40 301 < 40

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 166 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

BW-052JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: Main Waste

11/16/99 TB 10464 3640 6080 < 800 2550 < 800 28600 < 800 J 640 940 < 800 < 8000 < 800 < 800 < 800 50000 < 800 9100 5760 J 640

01/06/00 TB 10879 < 1600 3900 < 800 2300 < 800 23000 < 800 J 650 < 800 < 800 < 8000 < 800 < 800 < 800 40000 < 800 6500 2000 < 80002/04/00 TB 11105 2200 4690 < 800 1730 < 800 22600 J 370 J 710 J 600 < 800 < 8000 < 800 < 800 J 330 35600 < 800 6850 1850 J 98003/05/00 TB 11317 < 1600 5600 < 800 2700 < 800 31000 < 800 1100 < 800 < 800 < 8000 < 800 < 800 < 800 < 16000 < 800 8160 1600 < 80004/06/00 TB 11509 < 1000 2200 < 500 1000 < 500 11000 < 500 J 320 J 350 < 500 < 5000 < 500 < 500 < 500 36000 < 500 3500 1900 J 30008/04/00 TB 12330 < 1000 2400 < 500 1400 < 500 16000 < 500 J 410 < 500 < 500 < 5000 < 500 < 500 < 500 23000 < 500 4200 1500 < 50010/09/00 TB 12749 2200 1400 < 250 760 < 250 7200 < 250 < 250 280 < 250 < 2500 < 250 < 250 < 250 72000 < 250 2300 790 J 30012/07/00 TB 13383 < 800 1500 < 400 1200 < 400 8900 < 400 J 250 J 280 < 400 < 4000 < 400 < 400 < 400 < 8000 < 400 3300 < 400 J 280

01/05/01 TB 13517 2500 740 < 125 340 < 125 4200 < 125 < 125 190 < 125 < 1250 < 125 < 125 < 125 8100 < 125 1500 440 J 175

02/14/01 TB 13806 < 400 910 < 200 820 900 4100 < 200 < 200 260 < 200 J 220 < 200 < 200 < 200 27000 < 200 1600 900 J 240

03/13/01 TB 14004 < 400 1400 < 200 980 840 6700 < 200 < 200 < 200 < 200 J 200 < 200 < 200 < 200 41000 < 200 2400 540 600

05/02/01 TB 14295 < 400 1200 < 200 570 700 5600 < 200 < 200 370 < 200 J 210 < 200 < 200 < 200 27000 < 200 2100 490 J 360

06/01/01 TB 14555 830 400 < 50 220 140 1700 < 50 < 50 120 < 50 < 500 < 50 < 50 < 50 4400 < 50 740 180 200

07/03/01 TB 14692 1400 1600 < 200 910 780 6600 < 200 < 200 360 < 200 < 2000 < 200 < 200 < 200 36000 < 200 2400 700 J 36008/16/01 TB 14991 2500 460 < 400 410 < 400 2800 < 400 < 400 < 400 < 400 < 4000 < 400 < 400 < 400 180000 < 400 1600 < 400 < 40009/10/01 TB 15212 700 430 < 100 250 240 2100 < 100 < 100 150 < 100 < 1000 < 100 < 100 < 100 14000 < 100 960 210 J 16010/03/01 TB 15281 1200 470 < 100 350 670 1700 < 100 < 100 200 < 100 J 160 < 100 < 100 < 100 32000 < 100 870 310 36011/14/01 TB 15668 390 590 < 50 410 170 D 3200 51 190 190 < 50 < 500 < 50 < 50 J 33 18000 < 50 1900 200 31012/20/01 TB 15997 950 750 < 50 510 480 D 3100 59 82 230 < 50 < 500 < 50 < 50 < 50 D 21000 < 50 1700 300 350

01/11/02 TB 16127 560 670 < 50 330 390 2900 J 46 120 170 < 50 < 500 < 50 < 50 < 50 D 23000 < 50 1200 270 26002/03/02 TB 16320 690 690 < 50 400 200 2800 56 93 160 < 50 J 50 < 50 < 50 J 40 D 23000 < 50 1000 230 26004/05/02 TB 16794 480 730 < 100 300 210 3200 J 42 110 180 < 100 < 1000 < 100 < 100 < 100 37000 < 100 1400 210 J 28005/07/02 TB 16931 1100 480 < 100 300 360 2300 < 100 J 75 250 < 100 < 1000 < 100 < 100 < 100 D 63000 < 100 1800 100 46006/14/02 TB 17310 480 240 < 40 140 150 1100 < 40 < 40 79 < 40 < 400 < 40 < 40 < 40 D 60000 < 40 560 80 15208/17/02 TB 17715 370 850 < 80 460 < 80 4100 J 59 91 240 < 80 J 43 < 80 J 24 < 80 13000 J 27 2700 150 46411/06/02 TB 18199 340 200 < 40 57 150 990 < 40 < 40 76 < 40 < 400 < 40 < 40 < 40 D 39500 < 40 360 34 J 130

01/23/03 TB 18513 330 170 < 13 120 110 420 J 8 23 33 < 13 J 5 J 5 J 12 J 5 D 26000 J 6 450 16 21502/28/03 TB 18868 580 390 < 25 200 390 D 3000 J 18 J 22 110 < 25 < 250 < 25 J 5 J 10 D 23000 J 4 730 66 21505/19/03 TB 19294 346 82 < 10 24 < 30 380 < 10 < 10 < 10 < 10 J 48 J 8 < 10 < 10 22000 < 10 70 J 16 6208/21/03 TB 19719 63 81 < 5 29 < 15 112 < 5 11 < 5 < 5 < 20 < 4 < 5 < 5 2210 < 5 8 13 12

11/13/03 TB 20025 45 20 < 5 5 < 15 52 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 2590 < 5 < 5 J 5 J 3

02/26/04 TB 20520 33 255 < 5 32 71 129 < 5 8 < 5 < 5 J 23 J 8 < 5 < 5 13600 < 5 5 18 J 4

08/26/04 TB 20987 < 5 28 < 5 < 5 < 15 24 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 167 < 5 < 5 < 2 < 5

02/02/05 TB 21876 34 433 < 20 28 < 60 613 < 20 < 20 < 20 < 20 < 80 < 16 < 20 < 20 10600 < 20 < 20 J 32 J 1105/07/05 TB 22477 94 419 < 10 26 < 30 574 10 < 10 < 10 < 10 < 40 < 8 < 10 < 10 13800 < 10 < 10 J 12 34

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 167 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

BW-053JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: Main Waste

11/16/99 TB 10465 5900 11700 < 1600 6070 5600 58300 < 1600 3100 < 1600 < 1600 < 16000 < 1600 < 1600 < 1600 211000 < 1600 16700 4860 < 1600

01/06/00 TB 10880 2300 3800 < 500 2700 2400 21000 < 500 910 670 < 500 < 5000 < 500 < 500 < 500 150000 < 500 6900 2200 J 58002/05/00 TB 11115 2700 4700 < 500 5860 4100 D 21000 500 1800 900 < 500 < 5000 < 500 < 500 J 230 73300 < 500 10300 1190 150003/05/00 TB 11318 < 800 2080 < 400 1280 < 400 9840 < 400 560 J 400 < 400 < 4000 < 400 < 400 < 400 < 8000 < 400 2960 1120 J 24004/06/00 TB 11510 < 800 1500 < 400 1200 < 400 7700 < 400 420 J 310 < 400 < 4000 < 400 < 400 < 400 46000 < 400 3000 610 J 40010/09/00 TB 12750 1200 1700 < 250 1700 < 250 9500 < 250 470 280 < 250 < 2500 < 250 < 250 < 250 52000 < 250 3300 470 J 40011/03/00 TB 13110 < 500 1700 < 250 1300 < 250 9300 < 250 450 330 < 250 < 2500 < 250 < 250 < 250 < 5000 < 250 3800 430 J 40012/07/00 TB 13384 < 400 1100 < 200 840 < 200 6000 < 200 300 J 170 < 200 < 2000 < 200 < 200 < 200 22000 < 200 1900 330 J 180

01/05/01 TB 13518 < 500 1700 < 250 1200 < 250 9000 < 250 440 290 < 250 < 2500 < 250 < 250 < 250 33000 < 250 3100 560 J 250

02/14/01 TB 13807 < 400 760 < 200 430 < 200 4000 < 200 200 < 200 < 200 < 2000 < 200 < 200 < 200 10000 < 200 1100 270 J 40

03/13/01 TB 14005 < 400 2900 < 200 2500 1700 D 21000 270 780 < 200 < 200 J 360 < 200 < 200 < 200 D 140000 < 200 4300 550 880

05/02/01 TB 14296 3700 2400 < 200 2000 770 D 13000 230 380 650 < 200 J 250 < 200 < 200 < 200 D 410000 < 200 5500 310 1400

06/01/01 TB 14556 8800 5600 < 800 5700 12000 23000 < 800 1400 820 < 800 J 2900 < 800 < 800 < 800 D 840000 < 800 7500 1400 J 1120

07/03/01 TB 14693 17000 3900 < 1250 3500 9300 17000 < 1250 J 1100 < 1250 < 1250 J 1900 < 1250 < 1250 < 1250 D 960000 < 1250 5500 < 1250 < 125008/17/01 TB 15000 6500 3700 < 250 2900 8200 D 25000 310 950 620 < 250 J 1700 < 250 < 250 J 220 D 390000 < 250 4700 560 100010/03/01 TB 15282 6900 2600 < 500 2500 13000 15000 < 500 790 840 < 500 J 2500 < 500 < 500 < 500 D 330000 < 500 5700 < 500 J 140011/14/01 TB 15669 2900 2000 < 500 1900 5300 11000 < 500 640 650 < 500 J 1100 < 500 < 500 < 500 130000 < 500 4500 J 430 J 120012/20/01 TB 15998 4200 2400 < 500 2900 10000 13000 < 500 760 940 < 500 J 2100 < 500 < 500 < 500 D 220000 < 500 6700 J 360 1800

01/11/02 TB 16128 7700 4600 < 500 4300 17000 20000 J 430 1300 870 < 500 J 3400 < 500 < 500 J 240 D 530000 < 500 6500 1000 140002/03/02 TB 16321 9500 760 < 500 1000 17000 4600 < 500 J 230 570 < 500 J 3100 < 500 < 500 < 500 D 370000 < 500 2700 < 500 J 120004/05/02 TB 16795 3900 1500 < 800 2000 25000 8800 < 800 J 460 J 710 < 800 J 4000 < 800 < 800 < 800 340000 < 800 4700 < 800 J 128005/08/02 TB 16955 7600 2000 < 500 2200 D 34000 13000 < 500 630 850 < 500 5900 < 500 < 500 < 500 D 1500000 < 500 5600 J 250 150006/14/02 TB 17311 3300 2800 < 500 3000 21000 14000 J 270 870 720 < 500 J 4100 < 500 < 500 < 500 D 430000 < 500 6000 J 370 J 140008/17/02 TB 17716 3000 J 410 < 500 J 410 24000 3100 < 500 < 500 J 240 < 500 J 2800 < 500 < 500 < 500 D 630000 < 500 1400 < 500 J 50010/19/02 TB 18093 5600 < 500 < 500 < 500 13700 760 < 500 < 500 < 500 J 1600 < 500 < 500 D 636000 < 500 J 480 < 500 < 50011/06/02 TB 18140 2600 260 < 100 180 2000 2300 < 100 J 80 160 < 100 J 240 < 100 < 100 < 100 D 92000 < 100 1050 < 100 J 220

03/12/03 TB 18985 2700 430 < 80 360 2200 3100 < 80 140 210 < 80 J 300 < 80 < 80 < 80 D 53000 < 80 1500 J 75 28805/12/03 TB 19255 2530 384 < 80 192 1150 3280 < 80 128 384 < 80 < 320 < 64 < 80 < 80 27900 < 80 2140 J 64 57608/20/03 TB 19700 1310 230 < 25 130 240 1290 25 70 80 < 25 < 100 < 20 < 25 < 25 14200 < 25 555 J 30 18511/13/03 TB 20026 576 736 < 80 464 1140 2500 80 192 112 < 80 < 320 < 64 < 80 < 80 39400 < 80 880 J 112 208

02/26/04 TB 20501 1580 510 < 50 117 1140 1670 < 50 < 50 179 < 50 J 203 < 40 < 50 < 50 303000 < 50 778 J 41 285

04/13/04 TB 20689 1160 450 < 50 165 814 2810 < 50 80 270 < 50 < 200 < 40 < 50 < 50 39600 < 50 1050 109 348

05/19/04 TB 20738 689 195 < 25 75 240 1140 < 25 33 90 < 25 < 100 < 20 < 25 < 25 19600 < 25 339 58 184

06/29/04 TB 20836 1550 645 < 25 269 1020 3350 56 111 209 < 25 J 135 < 20 < 25 40 49600 < 25 930 109 324

07/22/04 TB 20863 1090 583 < 50 323 1760 1500 < 50 68 107 < 50 J 213 < 40 < 50 < 50 78300 < 50 495 106 23308/26/04 TB 20988 1430 680 < 50 313 1340 3440 < 50 101 159 < 50 J 200 < 40 < 50 < 50 70000 < 50 802 202 271

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 168 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

BW-053JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: Main Waste

02/02/05 TB 21877 214 294 < 20 101 < 60 740 < 20 25 < 20 < 20 < 80 < 16 < 20 < 20 29400 < 20 < 20 40 J 1805/07/05 TB 22478 430 665 < 25 200 < 75 2630 < 25 30 < 25 < 25 < 100 < 20 < 25 < 25 31200 < 25 130 < 10 95

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 169 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

BW-061JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: Main Waste

03/24/01 TB 14058 2000 460 < 100 610 1100 4000 < 100 210 420 < 100 J 200 < 100 < 100 < 100 D 110000 < 100 2100 < 100 92006/02/01 TB 14562 D 5700 1500 < 100 1700 D 7100 D 9400 160 620 840 < 100 1500 < 100 < 100 < 100 D 730000 < 100 D 5200 200 164007/03/01 TB 14696 4400 1500 < 400 1500 8400 6200 < 400 J 340 J 380 < 400 J 1900 < 400 < 400 < 400 D 1200000 < 400 2200 580 104009/10/01 TB 15215 4700 1800 < 200 3100 D 22000 D 14000 J 200 750 750 < 200 2800 < 200 < 200 < 200 D 920000 < 200 5700 400 136010/03/01 TB 15284 3400 1100 < 200 1700 2200 7400 < 200 370 600 < 200 J 450 < 200 < 200 < 200 D 680000 < 200 3400 360 92012/20/01 TB 16000 6700 2600 < 200 4600 D 18000 D 15000 300 1000 570 < 200 2600 < 200 < 200 < 200 D 630000 < 200 5900 570 1120

01/11/02 TB 16130 5500 1700 < 250 3800 D 29000 11000 J 210 780 470 < 250 3200 < 250 < 250 < 250 D 870000 < 250 4200 J 150 95003/07/02 TB 16651 10000 1900 < 500 3000 21000 12000 < 500 790 J 450 < 500 J 3300 < 500 < 500 < 500 D 910000 < 500 3900 J 320 J 90004/04/02 TB 16779 3900 1300 < 250 2200 D 23000 7300 J 170 540 280 < 250 3600 < 250 < 250 < 250 D 1200000 < 250 2500 370 J 55006/14/02 TB 17313 1300 1700 < 500 2800 17000 10000 J 210 790 J 330 < 500 J 3000 < 500 < 500 < 500 D 1200000 < 500 3700 J 340 J 700

08/24/02 TB 17771 D 20000 9 < 5 35 D 9000 69 < 5 5 16 < 5 D 720 < 5 < 5 < 5 D 220000 < 5 57 J 2 46

10/24/02 TB 18101 2175 < 125 < 125 J 50 3575 250 < 125 < 125 < 125 < 125 J 525 < 125 < 125 < 125 D 190000 < 125 125 < 125 < 12511/09/02 TB 18164 690 J 90 < 100 150 D 7300 420 < 100 < 100 J 50 < 100 1380 < 100 < 100 < 100 D 809000 < 100 240 < 100 J 190

03/12/03 TB 18991 3700 J 100 < 200 270 D 12000 1100 < 200 < 200 J 91 < 200 J 1700 < 200 < 200 < 200 D 540000 < 200 710 < 200 J 24004/15/03 TB 19101 2550 < 250 < 250 J 350 14800 1050 < 250 < 250 < 250 < 250 2350 < 200 < 250 < 250 888000 < 250 600 J 150 J 20005/13/03 TB 19269 3550 < 250 < 250 300 25800 2550 < 250 < 250 250 < 250 2750 < 200 < 250 < 250 603000 < 250 1650 < 100 J 35006/11/03 TB 19373 4050 300 < 250 300 J 12400 1650 < 250 < 250 < 250 < 250 J 1650 < 200 < 250 < 250 438000 < 250 900 J 100 J 30007/09/03 TB 19480 4960 < 400 < 400 480 J 14400 2800 < 400 < 400 < 400 < 400 J 2800 < 320 < 400 < 400 472000 < 400 1520 < 160 J 40008/21/03 TB 19713 2750 < 1250 < 1250 < 1250 30300 2000 < 1250 < 1250 < 1250 < 1250 < 5000 < 1000 < 1250 < 1250 1350000 < 1250 1250 < 500 < 125009/23/03 TB 19840 2000 < 500 < 500 < 500 J 18000 1600 < 500 < 500 < 500 < 500 J 2600 < 400 < 500 < 500 920000 < 500 700 < 200 J 20010/07/03 TB 19881 2500 300 < 250 < 250 23000 2500 < 250 < 250 < 250 < 250 2450 < 200 < 250 < 250 1220000 < 250 1200 J 100 J 20011/19/03 TB 20075 2800 250 < 250 < 250 13500 2250 < 250 < 250 < 250 < 250 J 1900 < 200 < 250 < 250 1010000 < 250 1350 J 100 J 25012/02/03 TB 20097 1100 < 250 < 250 < 250 9450 1500 < 250 < 250 < 250 < 250 J 1400 < 200 < 250 < 250 978000 < 250 750 J 100 J 100

02/27/04 TB 20533 516 61 < 50 < 50 J 224 1310 < 50 < 50 105 < 50 < 200 < 40 < 50 < 50 364000 < 50 632 < 20 12804/19/04 TB 20693 948 207 < 50 50 2690 2710 < 50 < 50 210 < 50 675 < 40 < 50 < 50 504000 < 50 1480 J 40 29305/19/04 TB 20740 1070 144 < 80 < 80 2690 1950 < 80 < 80 188 < 80 J 510 < 64 < 80 < 80 640000 < 80 1200 < 32 32506/29/04 TB 20838 1490 160 < 80 < 80 2780 4610 < 80 < 80 330 < 80 J 558 < 64 < 80 < 80 601000 < 80 2370 J 32 43908/27/04 TB 21006 1890 < 100 < 100 < 100 J 638 5220 < 100 < 100 516 < 100 < 400 < 80 < 100 < 100 685000 < 100 3250 < 40 735

02/08/05 TB 21925 392 155 < 50 < 50 J 159 2150 < 50 < 50 152 < 50 < 200 < 40 < 50 < 50 494000 < 50 948 J 36 28605/17/05 TB 22534 562 132 < 50 < 50 < 150 2420 < 50 < 50 174 < 50 < 200 < 40 < 50 < 50 599000 < 50 862 < 20 273

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 170 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

BW-063RJUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: Main Waste

06/14/02 TB 17315 2100 2200 < 200 3000 D 25000 8400 220 660 480 < 200 5600 < 200 < 200 J 90 D 1700000 < 200 3500 300 116008/24/02 TB 17772 5100 < 250 < 250 < 250 D 27000 260 < 250 < 250 J 83 < 250 3000 < 250 < 250 < 250 D 970000 < 250 310 < 250 J 25011/09/02 TB 18165 3800 370 < 100 340 D 38000 1280 J 33 J 83 J 60 < 100 4800 < 100 < 100 < 100 D 1120000 < 100 350 120 J 140

03/12/03 TB 18989 3400 1200 < 500 1100 14000 6000 < 500 J 390 J 160 < 500 J 900 < 500 < 500 < 500 D 500000 < 500 1400 J 300 J 20004/15/03 TB 19102 4480 207 < 5 223 25600 1280 31 102 67 < 5 < 3200 11 < 5 14 406000 < 5 < 800 152 16805/13/03 TB 19270 4480 < 400 < 400 < 400 28000 2800 < 400 < 400 < 400 < 400 3200 < 320 < 400 < 400 792000 < 400 1280 < 160 < 40006/11/03 TB 19374 4200 < 500 < 500 < 500 33600 1200 < 500 < 500 700 < 500 7100 < 400 < 500 < 500 579000 < 500 < 500 < 200 J 20007/09/03 TB 19481 5700 < 500 < 500 < 500 37600 1800 < 500 < 500 < 500 < 500 4800 < 400 < 500 < 500 573000 < 500 700 < 200 J 20008/21/03 TB 19714 4000 < 1000 < 1000 < 1000 39800 2400 < 1000 < 1000 < 1000 < 1000 J 5400 < 800 < 1000 < 1000 1260000 < 1000 1200 < 400 < 100009/23/03 TB 19841 3760 < 400 < 400 < 400 96500 1200 < 400 < 400 < 400 < 400 8400 < 320 < 400 < 400 1160000 < 400 640 < 160 J 160

10/07/03 TB 19882 3040 < 400 < 400 < 400 51500 1520 < 400 < 400 < 400 < 400 6160 < 320 < 400 < 400 1350000 < 400 800 J 160 J 160

11/19/03 TB 20076 2800 < 400 < 400 < 400 23600 2000 < 400 < 400 < 400 < 400 3760 < 320 < 400 < 400 932000 < 400 960 < 160 J 160

12/02/03 TB 20098 2190 < 500 < 500 < 500 35700 1970 < 500 < 500 < 500 < 500 5140 < 400 < 500 < 500 1010000 < 500 957 J 200 J 200

02/27/04 TB 20534 2060 < 1000 < 1000 < 1000 40000 3340 < 1000 < 1000 < 1000 < 1000 J 6580 < 800 < 1000 < 1000 1870000 < 1000 1350 J 400 < 100004/19/04 TB 20694 1170 < 500 < 500 < 500 21200 2610 < 500 < 500 < 500 < 500 J 3290 < 400 < 500 < 500 1160000 < 500 1070 < 200 J 20605/19/04 TB 20741 3260 < 500 < 500 < 500 16600 2170 < 500 < 500 < 500 < 500 J 3370 < 400 < 500 < 500 985000 < 500 907 < 200 J 30206/29/04 TB 20839 1780 289 < 50 222 1390 2060 < 50 111 165 < 50 J 208 J 70 < 50 < 50 421000 < 50 968 J 55 43408/27/04 TB 21007 1610 286 < 50 115 2410 2110 < 50 60 155 < 50 480 J 84 < 50 < 50 632000 < 50 866 J 49 360

02/08/05 TB 21926 1050 < 50 < 50 < 50 < 150 1920 < 50 < 50 143 < 50 < 200 J 84 < 50 < 50 401000 < 50 655 < 20 33905/17/05 TB 22535 1410 226 < 50 < 50 < 150 4780 < 50 < 50 251 < 50 < 200 J 62 < 50 < 50 263000 < 50 1320 < 20 372

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 171 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

BW-064JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: Main Waste

03/23/01 TB 14046 < 500 570 < 250 340 < 250 3700 < 250 < 250 < 250 < 250 < 2500 < 250 < 250 < 250 < 5000 < 250 1500 < 250 J 10006/02/01 TB 14565 9800 6000 < 500 < 500 6400 20000 < 500 < 500 590 < 500 J 1600 < 500 < 500 < 500 D 310000 < 500 5900 1000 J 60009/10/01 TB 15218 J 920 < 800 < 800 < 800 17000 2100 < 800 < 800 < 800 < 800 J 2900 < 800 < 800 < 800 340000 < 800 870 < 800 J 16010/03/01 TB 15273 8700 3300 < 625 2100 11000 16000 < 625 < 625 680 < 625 J 2100 < 625 < 625 < 625 D 2700000 < 625 6000 2600 J 75012/20/01 TB 16003 11000 J 460 < 500 710 15000 5600 < 500 < 500 720 < 500 J 2500 < 500 < 500 < 500 D 380000 < 500 3200 < 500 1900

01/11/02 TB 16133 14000 J 450 < 500 650 19000 4800 < 500 < 500 670 < 500 J 2700 < 500 < 500 < 500 D 340000 < 500 3200 < 500 170003/07/02 TB 16653 D 16000 450 < 400 J 400 13000 4200 < 400 < 400 J 380 < 400 J 2300 < 400 < 400 < 400 D 230000 < 400 2000 J 230 112004/05/02 TB 16796 D 30000 J 190 < 500 < 500 22000 1500 < 500 < 500 J 190 < 500 J 2700 < 500 < 500 < 500 D 170000 < 500 560 J 190 J 60006/14/02 TB 17316 6600 J 120 < 125 J 97 D 21000 1200 < 125 < 125 J 85 < 125 3100 < 125 < 125 < 125 D 190000 < 125 430 < 125 J 27508/24/02 TB 17773 4100 480 < 250 J 130 5300 8400 < 250 < 250 610 < 250 J 750 < 250 < 250 < 250 55000 < 250 5000 < 250 1300

10/24/02 TB 18102 D 15000 < 250 < 250 < 250 5400 J 250 < 250 < 250 < 250 < 250 J 850 < 250 < 250 < 250 62950 < 250 J 250 < 250 < 25011/09/02 TB 18166 8100 J 92 < 200 < 200 9900 1300 < 200 < 200 220 < 200 J 1520 < 200 < 200 < 200 68000 < 200 1120 < 200 J 500

03/12/03 TB 18988 D 5900 110 < 40 J 29 1300 1200 J 17 J 14 220 < 40 J 170 < 40 J 14 < 40 D 29000 < 40 1100 53 480

05/12/03 TB 19257 4650 < 125 < 125 < 125 700 1030 < 125 < 125 350 < 125 < 500 < 100 < 125 < 125 20000 < 125 1930 < 50 75008/21/03 TB 19720 3950 < 125 < 125 < 125 1450 150 < 125 < 125 < 125 < 125 < 500 < 100 < 125 < 125 55900 < 125 225 < 50 J 150

02/27/04 TB 20535 865 < 25 < 25 < 25 517 102 < 25 < 25 < 25 < 25 < 100 < 20 < 25 < 25 44900 < 25 69 J 17 8308/27/04 TB 21008 131 34 < 5 13 < 15 127 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 20300 < 5 < 5 13 24

02/07/05 TB 21915 128 197 < 5 73 < 15 1020 17 10 < 5 < 5 < 20 < 4 < 5 9 21800 < 5 < 5 28 3205/17/05 TB 22536 10 40 < 5 6 < 15 31 < 5 6 < 5 < 5 < 20 < 4 < 5 < 5 12300 < 5 < 5 < 2 J 2

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 172 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

BW-065JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: Main Waste

03/23/01 TB 14047 < 400 950 < 200 370 < 200 6700 < 200 < 200 J 190 < 200 < 2000 < 200 < 200 < 200 < 4000 < 200 2300 < 200 J 24006/02/01 TB 14566 9900 6700 < 800 < 800 5400 29000 < 800 < 800 < 800 < 800 J 1000 < 800 < 800 < 800 95000 < 800 9600 2700 J 96008/20/01 TB 15043 1400 5100 < 200 3300 15000 D 24000 450 420 310 < 200 2400 < 200 < 200 260 D 170000 < 200 4600 1700 J 48009/11/01 TB 15234 2700 4900 < 1000 2400 2100 26000 < 1000 < 1000 1100 < 1000 < 10000 < 1000 < 1000 < 1000 160000 < 1000 12000 1200 J 120010/03/01 TB 15274 1500 1500 < 400 500 1200 9300 < 400 < 400 430 < 400 < 4000 < 400 < 400 < 400 21000 < 400 3200 440 J 48011/14/01 TB 15671 1800 1500 < 250 1000 450 10000 < 250 < 250 730 < 250 < 2500 < 250 < 250 < 250 32000 < 250 5600 410 120012/20/01 TB 16004 2000 830 < 250 500 < 250 5400 < 250 < 250 590 < 250 < 2500 < 250 < 250 < 250 D 16000 < 250 3700 J 210 1050

01/11/02 TB 16134 2800 840 < 250 < 250 < 250 5500 < 250 < 250 620 < 250 < 2500 < 250 < 250 < 250 21000 < 250 3500 J 150 115002/10/02 TB 16400 D 4000 1000 < 125 390 930 D 4700 J 87 J 69 570 < 125 < 1250 < 125 < 125 J 68 29000 < 125 3500 190 95004/04/02 TB 16781 1200 470 < 100 180 300 3100 J 44 J 33 240 < 100 J 67 < 100 < 100 J 32 16000 < 100 1500 J 96 400

05/08/02 TB 16958 4000 760 < 200 < 200 < 200 6000 J 84 < 200 500 < 200 < 2000 < 200 < 200 < 200 33000 < 200 3300 J 94 880

06/14/02 TB 17317 1400 280 < 125 150 < 125 2300 < 125 < 125 390 < 125 < 1250 < 125 < 125 < 125 18000 < 125 1800 < 125 900

07/08/02 TB 17401 D 3100 250 < 50 82 460 D 2500 J 27 J 26 340 < 50 < 500 < 50 J 32 < 50 13000 J 22 1900 J 29 650

07/08/02 TB 17394 1000

08/17/02 TB 17719 2500 140 < 50 120 < 50 1300 J 18 < 50 170 < 50 < 500 < 50 J 15 < 50 8900 < 50 1000 J 25 35010/19/02 TB 18095 D 2800 200 < 50 70 < 50 1450 J 20 J 20 180 < 50 < 500 < 50 J 20 < 50 8400 < 50 1130 J 20 38011/06/02 TB 18143 990 120 < 25 50 100 950 J 10 J 10 140 < 25 < 250 < 25 < 25 < 25 D 48500 < 25 620 25 280

03/12/03 TB 18990 D 1600 110 < 25 34 360 1100 J 11 J 8 170 < 25 J 30 < 25 J 13 < 25 D 20000 J 10 980 J 14 32004/15/03 TB 19103 1050 104 < 20 56 552 852 < 20 < 20 136 < 20 < 80 < 16 < 20 < 20 11200 < 20 688 J 16 26405/12/03 TB 19240 1320 88 < 40 40 < 120 520 < 40 < 40 64 < 40 < 160 < 32 < 40 < 40 4390 < 40 296 < 16 26406/11/03 TB 19375 456 92 < 10 < 10 120 460 < 10 < 10 122 < 10 < 40 < 8 12 < 10 5440 < 10 544 J 16 25007/09/03 TB 19482 660 70 < 25 < 25 < 75 420 < 25 < 25 80 < 25 < 100 < 20 < 25 < 25 3470 < 25 320 J 35 14508/21/03 TB 19715 152 244 < 10 80 180 378 32 18 < 10 < 10 358 < 8 < 10 14 23700 < 10 44 42 7009/23/03 TB 19842 246 46 < 5 13 J 36 223 < 5 < 5 36 < 5 < 20 < 4 < 5 < 5 4010 < 5 141 J 9 7310/07/03 TB 19883 294 44 < 10 14 < 30 244 < 10 < 10 46 < 10 < 40 < 8 < 10 < 10 5200 < 10 168 J 14 9011/18/03 TB 20064 344 120 < 20 28 < 60 592 < 20 < 20 20 < 20 < 80 < 16 < 20 < 20 8930 < 20 76 J 32 11612/02/03 TB 20099 268 56 < 10 12 J 68 302 < 10 < 10 44 < 10 < 40 < 8 < 10 < 10 6130 < 10 168 J 12 78

02/27/04 TB 20536 689 125 < 25 < 25 322 958 < 25 < 25 88 < 25 < 100 < 20 < 25 < 25 17600 < 25 300 J 16 19204/19/04 TB 20695 216 63 < 5 13 J 22 210 < 5 < 5 28 < 5 < 20 < 4 < 5 < 5 6250 < 5 82 17 10808/26/04 TB 20990 248 48 < 10 10 < 30 276 < 10 < 10 22 < 10 < 40 < 8 < 10 < 10 10500 < 10 30 J 13 74

02/02/05 TB 21879 126 53 < 10 < 10 < 30 254 < 10 < 10 < 10 < 10 < 40 < 8 < 10 < 10 7150 < 10 < 10 J 4 25

05/17/05 TB 22537 159 15 < 10 < 10 < 30 69 < 10 < 10 < 10 < 10 < 40 < 8 < 10 < 10 13100 < 10 14 < 4 34

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 173 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

BW-072JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: Main Waste

04/04/02 TB 16785 J 140 1300 < 200 340 450 4600 J 60 J 78 J 180 < 200 J 65 < 200 < 200 < 200 37000 < 200 1400 610 J 24005/16/02 TB 17006 1000 3900 < 200 670 630 D 17000 240 430 310 < 200 < 2000 < 200 < 200 280 34000 J 91 5100 1800 84006/15/02 TB 17323 660 770 < 80 150 < 80 3200 < 80 < 80 210 < 80 < 800 < 80 < 80 < 80 35000 < 80 1300 190 30408/18/02 TB 17729 J 82 330 < 50 64 < 50 1600 J 17 J 29 J 23 < 50 < 500 < 50 < 50 J 19 16000 < 50 140 110 16011/07/02 TB 18151 190 230 < 50 J 38 < 50 1090 < 50 < 50 < 50 < 50 < 500 < 50 < 50 < 50 16000 < 50 < 50 J 24 J 40

02/28/03 TB 18871 150 200 < 13 73 < 13 580 J 6 13 J 4 J 6 < 125 J 8 < 13 J 4 D 33000 < 13 26 32 3805/12/03 TB 19260 792 296 < 20 104 204 1900 < 20 28 36 < 20 < 80 < 16 < 20 < 20 30800 < 20 168 48 20008/20/03 TB 19704 524 308 < 20 68 < 60 1890 < 20 20 < 20 < 20 < 80 < 16 < 20 < 20 24300 < 20 < 20 44 9211/13/03 TB 20028 376 212 < 20 56 < 60 1580 < 20 < 20 < 20 < 20 < 80 < 16 < 20 < 20 6590 < 20 20 44 112

02/26/04 TB 20523 143 419 < 20 109 < 60 1100 < 20 21 < 20 < 20 < 80 < 16 < 20 < 20 18000 < 20 26 61 42

08/26/04 TB 20992 333 261 < 20 42 < 60 1250 < 20 < 20 < 20 < 20 < 80 < 16 < 20 < 20 3410 < 20 55 64 133

02/02/05 TB 21882 41 127 < 10 22 < 30 289 < 10 < 10 < 10 < 10 < 40 < 8 < 10 < 10 2730 < 10 < 10 21 < 1005/07/05 TB 22479 42 133 < 10 21 < 30 329 < 10 < 10 < 10 < 10 < 40 < 8 < 10 < 10 3880 < 10 < 10 < 4 10

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 174 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

BW-074JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: Main Waste

05/16/02 TB 17007 120 150 < 5 61 53 140 J 3 12 33 J 3 < 50 J 3 J 3 J 4 D 14000 J 2 96 25 9306/14/02 TB 17319 91 110 < 5 22 D 1500 240 J 5 J 4 19 J 3 200 J 3 < 5 J 3 D 48000 < 5 71 24 4408/17/02 TB 17724 78 20 < 5 < 5 D 480 D 360 < 5 J 1 5 J 2 70 J 4 < 5 < 5 D 39000 J 1 42 15 2011/06/02 TB 18144 22 48 < 5 23 < 5 32 < 5 J 2 < 5 J 4 < 50 J 4 < 5 < 5 D 157000 < 5 J 2 8 J 8

02/26/03 TB 18785 130 170 < 5 56 < 5 22 6 16 < 5 J 2 < 50 J 2 J 1 J 4 D 46000 J 2 < 5 6 J 405/12/03 TB 19262 10 55 < 5 26 < 15 260 < 5 8 5 < 5 < 20 < 4 < 5 < 5 24800 < 5 42 J 6 2208/20/03 TB 19706 197 90 < 5 41 < 15 760 7 11 14 7 < 20 23 < 5 5 167000 < 5 74 12 5211/18/03 TB 20071 34 38 < 5 19 < 15 156 < 5 < 5 < 5 < 5 < 20 16 < 5 < 5 130000 < 5 < 5 J 6 1812/15/03 TB 20185 17 32 < 5 17 < 15 98 < 5 17 < 5 < 5 < 20 10 < 5 < 5 113000 < 5 < 5 J 5 J 2

02/27/04 TB 20539 410 < 5 < 5 < 5 < 15 2090 < 5 < 5 115 < 5 < 20 59 < 5 < 5 329000 < 5 12 J 3 110

04/19/04 TB 20697 106 16 < 5 10 < 15 205 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 24500 < 5 < 5 J 3 13

05/19/04 TB 20743 < 5 6 < 5 5 < 15 16 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 76000 < 5 < 5 < 2 < 506/29/04 TB 20841 8 18 < 5 10 < 15 39 < 5 < 5 < 5 < 5 < 20 J 4 < 5 < 5 22500 < 5 < 5 < 2 J 2

07/23/04 TB 20867 < 5 17 < 5 9 < 15 20 < 5 < 5 < 5 < 5 < 20 J 5 < 5 < 5 27200 < 5 < 5 J 4 < 508/26/04 TB 20993 < 5 14 < 5 8 < 15 41 < 5 < 5 < 5 < 5 < 20 J 6 < 5 < 5 59700 < 5 < 5 J 5 J 2

02/09/05 TB 21936 80 5 < 5 < 5 < 15 320 < 5 < 5 12 < 5 < 20 38 < 5 < 5 281000 < 5 13 < 2 2803/08/05 TB 22242 68 < 10 < 10 < 10 < 30 1080 < 10 < 10 25 < 10 < 40 42 < 10 < 10 251000 < 10 24 J 9 3604/13/05 TB 22365 57 < 10 < 10 < 10 < 30 493 < 10 < 10 < 10 < 10 < 40 46 < 10 < 10 399000 < 10 < 10 J 5 20

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 175 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

BW-075JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: Main Waste

05/16/02 TB 17008 J 76 340 < 125 J 69 < 125 910 < 125 < 125 < 125 < 125 < 1250 < 125 < 125 < 125 27000 < 125 260 130 < 12506/15/02 TB 17324 300 480 < 50 170 < 50 1200 J 23 J 30 < 50 < 50 < 500 < 50 < 50 J 23 40000 < 50 120 150 15008/17/02 TB 17725 990 260 < 50 130 < 50 510 < 50 J 21 < 50 < 50 < 500 < 50 J 18 J 12 17000 J 11 J 33 53 41011/07/02 TB 18152 560 200 < 20 72 < 20 370 J 8 J 12 J 16 < 20 < 40 < 20 J 8 < 20 D 31000 J 4 92 24 210

02/26/03 TB 18786 580 290 < 13 97 < 13 D 770 15 15 27 < 13 < 125 J 4 J 6 J 10 D 14000 < 13 140 62 11505/12/03 TB 19263 300 220 < 20 56 < 60 548 < 20 < 20 < 20 < 20 < 80 < 16 < 20 < 20 18200 < 20 < 20 J 24 8808/21/03 TB 19721 816 776 < 40 144 J 168 2020 < 40 < 40 112 < 40 < 160 < 32 < 40 < 40 95600 < 40 496 J 72 19211/18/03 TB 20072 26 155 < 5 21 J 15 26 < 5 < 5 < 5 < 5 < 20 J 5 < 5 < 5 11100 < 5 < 5 11 18

02/26/04 TB 20524 36 710 < 25 98 < 75 1460 < 25 25 < 25 < 25 < 100 < 20 < 25 < 25 8830 < 25 142 59 J 26

08/26/04 TB 20994 65 147 < 10 18 < 30 310 < 10 < 10 < 10 < 10 < 40 < 8 < 10 < 10 17200 < 10 16 33 18

02/02/05 TB 21883 < 10 233 < 10 23 < 30 258 < 10 10 < 10 < 10 < 40 < 8 < 10 < 10 13900 < 10 14 49 < 1005/07/05 TB 22480 24 113 < 5 11 < 15 107 < 5 < 5 < 5 < 5 < 20 J 5 < 5 < 5 16000 < 5 < 5 J 4 < 5

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 176 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

BW-076JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: Main Waste

05/07/02 TB 16934 560 2000 < 200 1700 5800 5500 J 150 320 J 100 < 200 J 1200 < 200 < 200 < 200 D 220000 < 200 1100 910 J 8006/15/02 TB 17325 830 1300 < 125 810 < 125 5100 J 91 190 350 < 125 < 1250 < 125 < 125 < 125 39000 < 125 2500 570 60008/17/02 TB 17726 23000 J 1200 < 2500 < 2500 < 2500 7100 < 2500 < 2500 J 760 < 2500 < 25000 < 2500 < 2500 < 2500 < 50000 < 2500 4600 < 2500 J 150011/07/02 TB 18153 2000 1120 < 25 980 380 4900 85 140 680 J 15 J 140 J 10 30 45 55000 35 4500 250 1060

01/23/03 TB 18515 1700 800 < 100 580 930 4100 J 69 120 440 < 100 J 160 < 100 < 100 J 39 D 76000 < 100 2600 290 66002/28/03 TB 18872 790 890 < 100 440 550 4000 J 66 120 300 < 100 J 47 < 100 < 100 J 39 D 120000 < 100 1800 240 42005/12/03 TB 19264 1000 680 < 100 300 1960 2840 < 100 < 100 140 < 100 < 400 < 80 < 100 < 100 66500 < 100 840 J 180 J 14008/20/03 TB 19707 1400 820 < 100 460 2540 4120 < 100 120 440 < 100 J 440 < 80 < 100 < 100 90000 < 100 3280 J 180 70011/13/03 TB 20027 1280 760 < 100 400 3180 3740 < 100 120 260 < 100 J 500 < 80 < 100 < 100 75100 < 100 1780 J 180 420

02/26/04 TB 20525 3110 2940 < 100 575 3140 12700 202 < 100 643 112 J 710 < 80 < 100 135 686000 < 100 4320 909 1063

04/19/04 TB 20698 780 506 < 100 267 2910 2380 < 100 < 100 168 < 100 J 470 < 80 < 100 < 100 89200 < 100 1160 J 135 J 191

05/19/04 TB 20744 503 467 < 100 206 1150 2570 < 100 < 100 194 < 100 < 400 < 80 < 100 < 100 34600 < 100 1370 J 121 J 193

06/29/04 TB 20842 433 424 < 40 175 1290 1250 < 40 63 138 < 40 J 174 < 32 < 40 < 40 15700 < 40 878 92 206

07/22/04 TB 20868 385 234 < 20 117 740 967 < 20 31 59 < 20 J 86 < 16 < 20 < 20 16000 < 20 367 73 8808/26/04 TB 20995 804 652 < 100 299 1080 3750 < 100 < 100 283 < 100 < 400 < 80 < 100 < 100 31700 < 100 1790 J 128 440

02/02/05 TB 21884 1440 787 < 100 629 J 726 3060 < 100 101 397 < 100 < 400 < 80 < 100 < 100 56900 < 100 2440 308 63505/12/05 TB 22507 267 246 < 25 98 282 1020 < 25 27 42 < 25 < 100 < 20 < 25 < 25 62100 < 25 265 J 45 92

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 177 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

MW-006JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: Main Waste

02/05/96 TB 01809 3700 < 500 7800 15000 < 500 3000 < 5000 3300 4100 470

01/08/97 TB 00970 930 < 100 < 100 2600 3200 < 100 < 100 < 100 780 < 100 64000 < 100 680 970 10001/28/97 TB 01074 350 1100 < 250 < 250 2500 3500 < 250 66 57 1200 < 250 100000 < 250 750 1300 7802/02/97 TB 01622 1100 < 120 < 120 3200 3900 < 120 77 < 120 < 250 < 120 18000 < 120 800 < 250 14004/06/97 TB 01944 270 < 50 < 50 < 100 1100 < 50 < 50 < 50 160 < 50 E 28000 < 50 170 230 < 5006/09/97 TB 02302 13 < 5 < 5 65 35 J 3 J 3 J 3 < 10 < 5 < 50 < 5 11 J 8 < 509/05/97 TB 02753 100 < 25 < 25 660 210 < 25 < 25 76 130 < 25 E 27000 < 25 J 18 52 < 25

02/15/98 TB 03809 9 < 5 < 5 95 27 < 5 < 5 < 5 < 10 < 5 E 8700 < 5 < 5 13 < 503/07/98 TB 03914 15 < 5 J 4 20 67 < 5 < 5 < 5 < 10 < 5 < 50 < 5 J 2 12 10

05/11/98 TB 04525 < 100 190 < 100 < 100 B 1900 290 < 100 < 100 < 100 470 < 100 E 120000 < 100 < 100 < 200 < 10007/12/98 TB 05002 J 200 1600 < 100 240 4100 5200 < 100 < 100 J 60 < 100 1400 < 200 < 100 J 60 E 270000 < 100 1300 1100 160

09/18/98 TB 05869 J 170 1350 < 250 < 250 2400 3600 < 250 < 250 < 500 < 250 < 500 < 500 < 250 < 500 190000 < 250 620 850 < 25010/11/98 TB 06119 155 D 1100 < 25 305 D 8300 D 2500 < 25 < 25 J 34 < 25 D 2200 J 11 < 25 J 34 D 400000 < 25 550 450 J 40

11/07/98 TB 06462 < 2000 1500 < 100 280 6400 5200 < 100 < 100 < 200 < 100 < 200 < 200 < 100 < 200 490000 < 100 840 1100 < 100

01/05/99 TB 07143 < 5000 590 < 250 J 110 2100 1600 < 250 < 250 < 500 < 250 < 500 < 500 < 250 < 500 100000 < 250 J 330 J 330 < 25002/02/99 TB 07361 < 5000 740 < 250 J 160 3300 2200 < 250 < 250 < 500 < 250 < 500 < 500 < 250 < 500 230000 < 250 J 380 J 330 < 25005/11/99 TB 08270 < 20000 1400 < 1000 < 1000 < 4000 1900 < 1000 < 1000 < 2000 < 1000 < 2000 < 2000 < 1000 < 2000 250000 < 1000 J 400 < 300008/12/99 TB 09224 < 500 1300 < 250 J 240 3100 3400 < 250 < 250 < 250 < 250 < 2500 < 250 < 250 < 250 D 200000 < 250 790 830 < 25011/12/99 TB 10443 < 250 1800 < 125 300 D 5500 D 3800 < 125 < 125 < 125 < 125 3100 < 125 < 125 < 125 D 190000 < 125 1700 790 < 125

02/05/00 TB 11116 < 200 520 < 100 120 3370 2340 < 100 < 100 < 100 < 100 J 880 < 100 < 100 < 100 D 146000 < 100 630 150 J 4005/08/00 TB 11701 520 1000 < 80 240 2200 D 4000 < 80 < 80 J 79 < 80 < 800 < 80 < 80 < 80 D 75000 < 80 930 270 J 5008/07/00 TB 12353 3100 800 < 125 200 2100 4100 < 125 < 125 < 125 < 125 < 1250 < 125 < 125 < 125 93000 < 125 830 260 < 12510/10/00 TB 12759 310 650 < 100 < 100 3700 3000 < 100 < 100 < 100 < 100 1100 < 100 < 100 < 100 D 160000 J 40 720 240 < 100

02/17/01 TB 13817 < 200 710 < 100 250 3500 3000 < 100 < 100 150 < 100 1000 < 100 < 100 < 100 D 190000 < 100 780 180 J 10005/01/01 TB 14284 < 200 670 < 100 220 4300 2700 < 100 < 100 110 < 100 1400 < 100 < 100 < 100 D 120000 < 100 740 140 J 8008/16/01 TB 14993 940 840 < 125 370 4900 2800 < 125 < 125 130 < 125 1500 < 125 < 125 < 125 D 170000 < 125 850 150 J 100

02/28/02 TB 16603 380 730 < 5 120 580 450 < 5 < 5 63 8 140 23 < 5 38 E 270000 8 270 180 10103/12/02 TB 16692 400 480 < 20 73 430 340 < 20 < 20 73 < 20 J 91 J 15 < 20 28 D 210000 J 12 250 110 11205/08/02 TB 16963 410 780 < 20 180 380 140 < 20 < 20 33 < 20 J 97 22 < 20 30 D 310000 < 20 85 150 56

08/18/02 TB 17731 29 480 < 13 53 60 61 < 13 < 13 J 11 < 13 J 15 < 13 < 13 25 D 100000 J 5 25 87 J 23

11/02/02 TB 18121 30 490 < 13 53 < 13 J 5 < 13 < 13 < 13 < 13 < 125 J 5 < 13 28 D 94000 < 13 J 3 58 < 13

02/21/03 TB 18742 20 D 460 < 5 94 77 32 6 J 2 J 2 J 5 J 14 9 J 2 31 D 56000 J 3 16 120 18

05/12/03 TB 19265 136 552 < 10 34 38 128 < 10 < 10 < 10 < 10 < 40 J 16 < 10 20 131000 < 10 26 J 16 < 1008/20/03 TB 19708 36 92 < 10 24 J 38 134 < 10 < 10 < 10 < 10 < 40 24 < 10 < 10 123000 < 10 30 26 < 1011/18/03 TB 20073 44 227 < 5 63 57 92 < 5 < 5 < 5 < 5 < 20 16 < 5 15 93400 < 5 23 84 J 3

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 178 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

MW-006JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: Main Waste

02/26/04 TB 20526 137 44 < 10 33 J 67 357 < 10 < 10 < 10 < 10 < 40 28 < 10 < 10 250000 < 10 78 107 J 808/24/04 TB 20935 90 105 < 10 42 334 614 < 10 < 10 < 10 < 10 139 20 < 10 < 10 174000 < 10 149 107 J 1310/14/04 TB 21301 31 33 < 5 8 < 15 88 < 5 < 5 < 5 < 5 < 20 10 < 5 < 5 90600 < 5 20 < 2 J 511/22/04 TB 21500 77 73 < 5 72 < 15 37 < 5 < 5 8 < 5 < 20 15 < 5 < 5 213000 < 5 15 18 1412/07/04 TB 21554 32 119 < 5 83 J 16 14 5 < 5 < 5 < 5 < 20 15 < 5 6 297000 < 5 8 23 12

01/19/05 TB 21855 26 152 < 5 134 82 99 7 < 5 5 < 5 < 20 28 < 5 11 325000 < 5 25 67 2402/10/05 TB 21942 96 130 5 77 405 461 5 < 5 23 < 5 93 15 < 5 9 206000 < 5 115 48 3805/17/05 TB 22538 429 202 < 10 50 J 1030 965 < 10 < 10 46 < 10 402 J 10 < 10 10 146000 < 10 220 50 67

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 179 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

MW-006 EW1JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: Main Waste

06/04/96 TB 01270 200 1200 < 250 < 250 600 4000 200 < 250 < 250 < 500 < 250 < 2500 < 250 200 250 < 25008/04/96 TB 00159 62 1700 < 100 940 2300 5000 < 100 180 < 37 < 100 570 < 100 < 100 130000 < 100 670 2700 14009/08/96 TB 00363 2000 < 250 920 1400 6400 < 250 < 200 < 250 < 250 < 400 < 250 < 250 58200 < 250 1100 2600 < 24010/06/96 TB 00531 2000 < 250 < 250 1600 6400 < 250 < 250 < 250 500 < 250 35000 < 250 1300 2000 29011/06/96 TB 00667 1700 < 250 570 < 500 4900 < 250 < 250 < 250 < 500 < 250 9800 < 250 740 1300 < 25012/08/96 TB 00819 1700 < 250 < 250 1500 4700 < 250 < 250 < 250 < 500 < 250 15000 < 250 780 1300 < 250

01/08/97 TB 00971 1600 < 250 < 250 1000 4600 < 250 < 250 < 250 < 500 < 250 14000 < 250 660 1100 < 25003/01/97 TB 01802 1000 < 120 < 120 280 2900 J 42 J 48 J 28 < 250 < 120 9400 < 120 400 630 J 12004/06/97 TB 01952 760 < 100 < 100 < 200 1600 < 100 < 100 < 100 < 200 < 100 2500 < 100 210 450 J 4206/08/97 TB 02276 530 < 25 < 25 < 50 610 J 11 < 25 < 25 < 50 < 25 820 < 25 J 10 J 28 J 24

07/02/97 TB 02434 < 25 < 25 < 25 < 50 710 < 25 < 25 B 29 < 50 < 25 < 250 < 25 < 25 < 50 < 2509/05/97 TB 02750 440 < 25 75 < 50 330 J 13 < 25 < 25 < 50 < 25 2000 < 25 < 25 < 50 < 2512/13/97 TB 03461 490 < 25 60 < 100 770 < 25 < 25 < 50 < 25 J 25 < 25 J 29 < 25 J 13 < 75 J 22

06/04/98 TB 04721 410 < 25 84 < 100 640 J 12 J 13 < 50 < 25 < 50 < 50 < 25 J 23 5600 < 25 < 50 J 74 J 1508/07/98 TB 05391 100 430 < 25 90 < 100 980 J 15 J 10 J 5 < 25 < 50 < 50 < 25 J 25 6700 J 5 J 20 150 J 2011/04/98 TB 06383 J 61 590 < 25 110 < 100 E 1400 < 25 J 14 J 10 < 25 < 50 < 50 < 25 J 26 18000 < 25 J 36 110 J 24

01/05/99 TB 07144 < 500 360 < 25 74 < 100 280 8 7 < 50 < 25 < 50 < 50 < 25 J 19 7400 < 25 J 10 J 67 < 2502/02/99 TB 07360 < 100 D 470 < 5 91 22 D 320 10 8 J 4 < 5 < 10 < 10 J 4 26 D 5400 7 15 64 1608/12/99 TB 09223 < 50 360 < 25 67 < 25 180 < 25 < 25 < 25 < 25 < 250 < 25 < 25 J 14 5800 < 25 J 9 46 < 2511/11/99 TB 10437 < 50 390 < 25 78 < 25 45 < 25 < 25 < 25 < 25 < 250 < 25 < 25 < 25 6800 < 25 < 25 32 < 25

05/08/00 TB 11702 < 10 140 < 5 40 < 5 86 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 D 2500 < 5 < 5 10 J 106/07/00 TB 11929 23 D 230 < 5 58 < 5 190 < 5 < 5 < 5 < 5 < 50 < 5 < 5 7 D 3100 < 5 J 4 17 J 210/10/00 TB 12758 < 10 140 < 5 33 < 5 19 < 5 < 5 < 5 < 5 < 50 < 5 < 5 J 5 D 2300 < 5 < 5 8 < 5

02/17/01 TB 13818 < 10 76 < 5 18 < 5 44 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 2500 < 5 < 5 < 5 < 506/01/01 TB 14558 24 110 < 5 26 9 84 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 D 7500 < 5 8 J 5 < 508/16/01 TB 14994 70 47 < 10 15 29 16 < 10 < 10 < 10 < 10 < 100 < 10 < 10 < 10 D 17000 < 10 < 10 < 10 < 1011/14/01 TB 15674 20 65 < 5 17 < 5 7 < 5 < 5 < 5 < 5 < 50 5 < 5 < 5 D 16000 < 5 < 5 5 < 5

02/03/02 TB 16323 35 52 < 5 15 < 5 5 < 5 < 5 < 5 < 5 < 50 J 4 < 5 < 5 D 27000 < 5 < 5 J 3 < 505/08/02 TB 16960 J 7 71 < 5 20 < 5 7 < 5 < 5 < 5 < 5 < 50 7 < 5 < 5 D 29000 < 5 < 5 J 4 J 2

08/17/02 TB 17727 J 7 49 < 5 18 < 5 20 < 5 < 5 J 1 < 5 < 50 7 < 5 < 5 D 26000 < 5 J 3 J 2 J 2

11/02/02 TB 18122 < 10 81 < 5 21 < 5 22 < 5 < 5 J 2 < 5 < 50 10 < 5 < 5 51000 < 5 J 5 J 3 < 5

02/21/03 TB 18743 15 70 < 5 17 < 5 40 < 5 < 5 J 3 < 5 < 50 8 < 5 < 5 D 32000 < 5 10 J 3 J 5

05/12/03 TB 19266 11 53 < 5 17 < 15 14 < 5 < 5 < 5 < 5 < 20 J 7 < 5 < 5 26000 < 5 < 5 < 2 < 508/19/03 TB 19687 11 47 < 5 12 < 15 35 < 5 < 5 < 5 < 5 < 20 J 5 < 5 < 5 16400 < 5 < 5 < 2 < 511/13/03 TB 20029 9 56 < 5 13 < 15 15 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 18800 < 5 < 5 < 2 < 5

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 180 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

MW-006 EW1JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: Main Waste

02/26/04 TB 20527 37 59 < 5 18 < 15 22 < 5 < 5 < 5 < 5 < 20 J 6 < 5 < 5 18200 < 5 < 5 J 3 < 508/24/04 TB 20936 17 50 < 5 18 < 15 39 < 5 < 5 < 5 < 5 < 20 J 5 < 5 < 5 25100 < 5 9 < 2 J 2

02/04/05 TB 21908 13 53 < 5 9 < 15 120 < 5 < 5 < 5 < 5 < 20 J 4 < 5 < 5 38800 < 5 < 5 J 2 J 205/07/05 TB 22482 < 5 29 < 5 12 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 15300 < 5 < 5 < 2 < 5

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 181 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

MW-038JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: Main Waste

02/05/96 TB 01813 810 < 250 7000 6600 < 250 4200 < 2500 1800 < 500 550

02/02/97 TB 01610 630 < 250 1200 5200 5000 < 250 430 < 250 4600 < 250 440000 < 250 1500 < 500 53003/01/97 TB 01803 520 < 500 1000 5100 3900 < 500 J 160 < 500 3300 < 500 E 340000 < 500 870 < 1000 J 10004/06/97 TB 01950 750 < 500 < 500 < 1000 6400 < 500 J 290 < 500 2500 < 500 E 460000 < 500 1400 < 1000 < 50006/29/97 TB 02358 72 < 50 < 50 1100 590 < 50 J 32 < 50 810 < 50 J 330 < 50 130 < 100 J 4510/15/97 TB 03004 57 < 50 < 50 1000 1000 < 50 65 < 50 < 100 < 50 E 150000 < 50 280 < 100 86

01/17/98 TB 03649 < 25 < 25 < 25 B 620 40 < 25 < 25 < 50 < 25 B 370 < 50 < 25 < 50 < 25 J 15 < 75 < 2504/04/98 TB 04191 120 140 < 100 310 2800 960 < 100 J 99 < 100 1500 < 100 E 170000 < 100 300 < 200 10006/08/98 TB 04736 425 < 25 820 D 3900 D 2400 35 J 25 390 J 15 D 2300 < 50 < 25 J 10 D 310000 < 25 1000 75 490

07/12/98 TB 05003 3300 330 < 100 490 D 7100 2700 < 100 < 100 280 < 100 3100 < 200 < 100 < 200 D 180000 < 100 870 J 110 350

09/17/98 TB 05852 1600 250 < 250 350 4300 2400 < 250 < 250 J 190 < 250 2500 < 500 < 250 < 500 370000 < 250 700 < 750 J 140

11/07/98 TB 06460 1500 230 < 50 270 8900 2400 < 50 < 50 210 < 50 4600 < 100 < 50 < 100 410000 < 50 770 J 120 150

01/05/99 TB 07145 J 1100 130 < 100 230 D 11000 1200 < 100 < 100 J 120 < 100 D 4000 < 200 < 100 < 200 D 440000 < 100 380 < 300 J 99

02/02/99 TB 07362 2900 200 < 100 470 D 12000 1900 < 100 < 100 J 200 < 100 D 4300 < 200 < 100 < 200 D 480000 < 100 610 J 63 J 16005/11/99 TB 08271 < 10000 < 500 < 500 < 500 6500 1400 < 500 < 500 < 1000 < 500 < 1000 < 1000 < 500 < 1000 D 370000 < 500 J 370 < 150006/08/99 TB 08609 < 500 26 < 25 < 25 500 245 < 25 < 25 < 50 < 25 650 < 50 < 25 < 50 D 63000 < 25 J 35 J 14 < 2508/13/99 TB 09255 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 1400 < 5 < 5 < 5 < 510/08/99 TB 10016 < 10 J 2 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 320 < 5 < 5 < 5 < 511/12/99 TB 10446 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 1400 < 5 < 5 < 5 < 512/04/99 TB 10637 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 1900 < 5 < 5 < 5 < 5

02/05/00 TB 11110 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 690 < 5 < 5 < 5 < 505/08/00 TB 11703 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 1200 < 5 < 5 < 5 < 5

02/17/01 TB 13819 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 940 < 5 < 5 < 5 < 505/02/01 TB 14298 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 1000 < 5 < 5 < 5 < 508/21/01 TB 15048 < 10 J 4 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 780 < 5 < 5 < 5 < 511/14/01 TB 15675 < 10 J 5 < 5 J 4 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 1300 < 5 < 5 < 5 < 5

02/03/02 TB 16324 < 10 J 3 < 5 J 3 < 5 J 1 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 D 2700 < 5 < 5 < 5 J 105/08/02 TB 16961 J 7 7 < 5 6 8 J 2 < 5 < 5 < 5 < 5 < 50 J 3 < 5 < 5 D 2200 < 5 < 5 < 5 < 508/17/02 TB 17728 J 3 J 2 < 5 J 3 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 D 3000 < 5 < 5 < 5 < 5

02/26/03 TB 18787 20 7 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 J 4 < 5 < 5 D 5000 < 5 < 5 < 5 < 505/12/03 TB 19267 13 12 < 5 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 J 4 < 5 < 5 1750 < 5 < 5 < 2 < 508/20/03 TB 19709 < 5 9 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 J 5 < 5 < 5 8400 < 5 < 5 < 2 < 511/19/03 TB 20080 < 5 9 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 J 5 < 5 < 5 16200 < 5 < 5 < 2 < 5

02/26/04 TB 20506 6 12 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 J 5 < 5 < 5 11600 < 5 < 5 < 2 < 508/27/04 TB 21002 16 10 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 J 4 < 5 < 5 8670 < 5 < 5 < 2 < 5

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 182 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

MW-038JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: Main Waste

02/08/05 TB 21929 5 34 < 5 12 J 27 44 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 12700 < 5 8 J 5 J 205/06/05 TB 22473 < 5 17 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 3350 < 5 < 5 < 2 < 5

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 183 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

MW-069JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: Main Waste

04/17/96 TB 01566 < 10 < 5 < 5 17 < 10 4 < 5 < 5 < 5 < 10 < 5 < 50 < 5 < 5 < 10 < 5

02/02/97 TB 01614 < 5 < 5 27 < 10 < 5 < 5 < 5 < 5 < 10 < 5 86000 < 5 < 5 < 10 < 5

02/15/99 TB 07504 < 100 < 5 < 5 17 < 20 < 5 < 5 < 5 < 10 < 5 < 10 J 3 < 5 < 10 D 30000 < 5 < 10 < 15 < 508/12/99 TB 09242 < 10 < 5 < 5 19 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 D 38000 < 5 < 5 < 5 < 5

02/28/01 TB 13945 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 D 31000 < 5 < 5 < 5 < 508/17/01 TB 15007 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 13 < 5 < 5 D 79000 < 5 < 5 < 5 < 5

02/28/02 TB 16605 < 10 < 5 < 5 J 3 < 5 < 5 < 5 < 5 < 5 < 5 < 50 13 < 5 < 5 D 76000 < 5 < 5 < 5 < 508/18/02 TB 17733 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 11 < 5 < 5 D 46000 < 5 < 5 < 5 < 5

02/28/03 TB 18865 30 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 5 < 5 < 5 D 43000 < 5 < 5 < 5 < 5

02/26/04 TB 20491 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 11 < 5 < 5 60300 < 5 < 5 < 2 < 507/22/04 TB 20869 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 J 9 < 5 < 5 48700 < 5 < 5 < 2 < 508/30/04 TB 21033 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 J 7 < 5 < 5 25400 < 5 < 5 < 2 < 5

02/04/05 TB 21910 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 J 8 < 5 < 5 31800 < 5 < 5 < 2 < 505/12/05 TB 22508 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 10 < 5 < 5 48300 < 5 < 5 < 2 < 5

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 184 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

MW-070JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: Main Waste

04/17/96 TB 01573 < 10 < 5 < 5 < 5 < 10 3 < 5 < 5 < 5 < 10 < 5 < 50 < 5 < 5 < 10 < 5

02/02/97 TB 01618 < 5 < 5 < 5 < 10 < 5 < 5 < 5 < 5 < 10 < 5 < 50 < 5 < 5 < 10 < 5

02/15/99 TB 07509 < 100 < 5 < 5 < 5 < 20 < 5 < 5 < 5 < 10 < 5 < 10 < 10 < 5 < 10 D 13000 < 5 < 10 < 15 < 508/12/99 TB 09243 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 2300 < 5 < 5 < 5 < 5

02/28/01 TB 13946 < 10 < 5 < 5 J 4 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 D 2700 < 5 < 5 < 5 < 508/17/01 TB 15008 < 10 < 5 < 5 7 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 D 6000 < 5 < 5 < 5 < 5

03/02/02 TB 16614 < 10 < 5 < 5 11 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 D 3200 < 5 < 5 < 5 < 508/24/02 TB 17776 < 10 J 3 < 5 16 < 5 < 5 J 4 J 2 < 5 J 2 < 50 < 5 < 5 < 5 D 2800 < 5 < 5 J 1 < 5

02/28/03 TB 18863 J 9 J 3 < 5 15 < 5 < 5 J 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 D 3000 < 5 < 5 J 2 < 5

07/22/04 TB 20870 < 5 < 5 < 5 16 < 15 < 5 8 < 5 < 5 < 5 < 20 < 4 < 5 < 5 324 < 5 < 5 J 3 < 508/30/04 TB 21034 < 5 < 5 < 5 11 < 15 < 5 6 < 5 < 5 < 5 < 20 < 4 < 5 < 5 499 < 5 < 5 J 2 < 5

05/12/05 TB 22509 < 5 < 5 < 5 12 < 15 < 5 6 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 J 2 < 5

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 185 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

MW-071JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: Main Waste

04/17/96 TB 01575 < 50 < 5 < 5 < 5 < 10 2 < 5 < 5 < 5 < 10 < 5 < 50 < 5 < 5 < 10 < 5

02/28/01 TB 13947 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 J 3 < 5 < 100 < 5 < 5 < 5 < 508/17/01 TB 15009 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 5

03/02/02 TB 16615 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 508/18/02 TB 17734 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 5

02/28/03 TB 18860 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 5

02/26/04 TB 20507 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 508/30/04 TB 21035 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

02/04/05 TB 21911 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 505/12/05 TB 22510 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 186 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

MW-085JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: Main Waste

05/01/96 TB 01590 < 10 27 < 5 22 < 10 < 5 3 < 5 < 5 < 10 < 5 < 5 < 5 < 10 < 5

02/02/97 TB 01612 750 < 500 < 500 < 1000 13000 420 120 < 500 < 1000 < 500 12000 < 500 5300 < 1000 370002/15/97 TB 01685 610 < 500 < 500 < 1000 11000 J 380 J 170 < 500 < 1000 < 500 E 21000 < 500 4400 < 1000 310003/01/97 TB 01804 700 < 500 < 500 1100 15000 J 410 < 500 J 230 < 1000 < 500 13000 < 500 5600 J 710 360005/08/97 TB 02149 74 98 < 12 69 < 25 300 15 28 < 12 < 25 < 12 < 120 < 12 200 < 25 16006/08/97 TB 02277 190 < 10 83 < 20 240 12 20 < 10 < 20 < 10 E 4600 < 10 87 32 14009/05/97 TB 02749 250 < 12 140 < 25 260 19 18 < 12 < 25 < 12 E 3200 < 12 30 J 13 23012/13/97 TB 03462 120 < 5 63 < 20 16 J 5 9 J 4 < 5 19 < 10 < 5 J 3 J 2 J 6 < 15 64

03/07/98 TB 03915 98 < 5 42 < 10 J 4 6 < 5 < 5 < 10 < 5 E 250 < 5 J 2 J 6 22

09/10/98 TB 05781 < 10 22 < 5 15 < 20 J 4 < 5 < 5 < 10 < 5 < 10 < 10 < 5 < 10 570 < 5 < 10 < 15 < 5

02/04/99 TB 07385 < 100 14 < 5 7 < 20 J 3 < 5 J 1 < 10 < 5 < 10 < 10 < 5 < 10 490 < 5 J 1 < 15 J 1

05/08/99 TB 08257 < 100 11 < 5 5 < 20 < 5 < 5 J 1 < 10 < 5 < 10 < 10 < 5 < 10 190 < 5 J 1 < 15 < 508/24/99 TB 09419 < 10 16 < 5 13 < 5 J 3 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 1300 < 5 < 5 J 2 < 511/11/99 TB 10438 < 10 55 < 5 34 68 < 5 < 5 62 < 5 < 5 < 50 < 5 < 5 < 5 560 < 5 < 5 7 < 5

02/13/00 TB 11186 < 10 10 < 5 7 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 610 < 5 < 5 < 5 < 505/08/00 TB 11704 < 10 J 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 520 < 5 < 5 < 5 < 508/07/00 TB 12354 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 D 680 < 5 < 5 < 5 < 510/13/00 TB 12801 < 10 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 5

02/14/01 TB 13808 < 10 J 4 < 5 J 3 < 5 6 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 505/01/01 TB 14285 73 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 100 < 5 < 5 < 5 < 508/16/01 TB 14995 14 J 3 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 830 < 5 < 5 < 5 < 511/13/01 TB 15631 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 5

02/09/02 TB 16394 28 J 3 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 250 < 5 < 5 < 5 < 505/08/02 TB 16962 < 10 J 4 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 J 73 < 5 < 5 < 5 < 508/16/02 TB 17709 J 3 6 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 5

02/14/03 TB 18714 < 10 J 3 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 508/20/03 TB 19692 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2

02/26/04 TB 20495 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

08/26/04 TB 20996 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 50 < 5 < 5 < 2 < 510/14/04 TB 21302 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 511/18/04 TB 21495 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 148 < 5 < 5 < 2 < 512/07/04 TB 21555 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

01/20/05 TB 21862 < 5 23 < 5 < 5 < 15 < 5 < 5 6 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 502/09/05 TB 21937 < 5 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 187 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

MW-085JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: Main Waste

05/07/05 TB 22483 < 5 8 < 5 < 5 < 15 < 5 < 5 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 188 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

MW-086JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: Main Waste

05/01/96 TB 01591 < 10 3 < 5 < 5 < 10 < 5 < 5 < 5 15 < 10 < 5 < 5 < 5 < 10 < 5

02/15/97 TB 01686 12 < 5 73 < 10 J 2 21 < 5 < 5 < 10 < 5 E 290 < 5 < 5 < 10 < 512/14/97 TB 03487 J 4 < 5 J 5 < 20 < 5 < 5 < 5 < 10 < 5 30 < 10 < 5 < 10 < 5 < 10 < 15 < 5

03/08/98 TB 03928 J 4 < 5 < 5 < 10 < 5 < 5 < 5 < 5 < 10 < 5 J 4 < 5 < 5 < 10 < 5

02/04/99 TB 07386 < 100 < 5 < 5 < 5 < 20 < 5 < 5 < 5 < 10 < 5 < 10 < 10 < 5 < 10 < 100 < 5 < 10 < 15 < 508/14/99 TB 09267 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 5

10/13/00 TB 12802 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 5

02/17/01 TB 13821 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 5

08/17/01 TB 15011 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 5

03/05/02 TB 16642 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 505/16/02 TB 17009 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 508/23/02 TB 17766 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 5

02/14/03 TB 18715 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 508/20/03 TB 19693 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2

02/26/04 TB 20494 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 508/26/04 TB 20997 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 510/14/04 TB 21303 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 511/18/04 TB 21496 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 512/07/04 TB 21556 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

01/20/05 TB 21863 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 502/09/05 TB 21938 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 504/14/05 TB 22376 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 189 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

MW-094JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: Main Waste

08/21/96 TB 00272 180 1900 < 250 < 250 < 500 6100 < 159 < 230 < 250 < 250 < 500 < 250 < 152 5200 < 250 250 3200 27012/30/96 TB 00943 2000 < 250 1100 < 500 5600 820 < 250 < 250 < 500 < 250 9200 < 250 < 250 2700 < 250

02/02/97 TB 01615 2400 < 250 < 250 < 500 5700 1000 < 250 < 250 < 500 < 250 8800 < 250 230 3500 24003/01/97 TB 01806 2600 < 250 1200 < 500 4900 1400 < 250 J 170 < 500 < 250 < 2500 < 250 J 120 3700 J 9504/06/97 TB 01948 1600 < 120 < 120 < 250 3200 820 < 120 < 120 < 250 < 120 < 1200 < 120 140 2100 J 12006/29/97 TB 02360 < 100 < 100 1100 < 200 2200 280 < 100 < 100 < 200 < 100 E 48000 < 100 210 2600 J 58

05/11/98 TB 04527 < 500 4500 < 500 1400 J 650 11000 < 500 < 500 < 500 < 1000 < 500 E 120000 < 500 650 3300 < 50008/07/98 TB 05392 < 10 9 < 5 16 < 20 < 5 J 4 30 < 10 < 5 < 10 < 10 < 5 J 1 < 50 < 5 < 10 J 5 < 509/17/98 TB 05853 < 10 9 < 5 32 < 20 J 2 10 98 12 < 5 J 7 < 10 < 5 < 10 < 50 < 5 < 10 < 15 < 5

11/07/98 TB 06461 < 100 45 < 5 D 680 < 20 < 5 < 5 D 630 < 10 16 < 10 < 10 < 5 19 290 < 5 < 10 17 < 5

02/04/99 TB 07387 < 100 9 < 5 D 240 < 20 < 5 33 D 240 < 10 < 5 < 10 < 10 < 5 J 5 < 100 < 5 < 10 J 4 < 508/13/99 TB 09253 < 10 6 < 5 76 < 5 < 5 22 180 < 5 J 3 < 50 < 5 < 5 J 4 < 100 < 5 < 5 J 3 < 5

08/07/00 TB 12355 < 10 120 < 5 170 < 5 15 120 D 780 < 5 19 < 50 < 5 < 5 17 D 5600 < 5 < 5 12 J 210/13/00 TB 12804 < 10 140 < 5 120 < 5 17 140 D 1000 < 5 14 < 50 < 5 < 5 26 D 8500 < 5 < 5 15 9

02/17/01 TB 13822 < 10 61 < 5 190 < 5 6 82 D 680 < 5 16 < 50 < 5 < 5 12 2600 < 5 < 5 6 < 508/21/01 TB 15049 < 10 110 < 5 170 < 5 6 200 D 1600 < 5 25 < 50 5 < 5 28 2900 < 5 < 5 14 < 5

02/28/02 TB 16606 < 100 70 < 50 270 < 50 < 50 200 1900 < 50 53 < 500 < 50 < 50 J 29 J 750 < 50 < 50 < 50 < 5005/07/02 TB 16937 J 26 65 < 50 190 130 < 50 190 1800 < 50 J 46 < 500 < 50 < 50 J 31 2000 < 50 < 50 < 50 < 5008/23/02 TB 17768 < 25 21 < 13 220 < 13 J 4 44 490 < 13 25 < 125 < 13 < 13 J 8 J 210 < 13 < 13 < 13 < 13

02/14/03 TB 18716 < 25 15 < 13 91 < 13 < 13 42 430 < 13 < 13 < 125 < 13 < 13 J 8 < 250 < 13 < 13 < 13 < 1305/12/03 TB 19268 < 5 7 < 5 31 < 15 < 5 20 191 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 508/20/03 TB 19710 < 10 16 < 10 28 < 30 < 10 56 632 < 10 < 10 < 40 < 8 < 10 10 < 100 < 10 < 10 < 4 < 1011/19/03 TB 20081 < 5 6 < 5 12 < 15 < 5 16 171 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

02/26/04 TB 20529 51 100 < 10 186 < 30 < 10 339 700 < 10 22 < 40 < 8 < 10 11 821 < 10 < 10 J 4 < 1008/26/04 TB 20998 < 5 7 < 5 8 < 15 < 5 17 185 < 5 < 5 < 20 < 4 < 5 < 5 93 < 5 < 5 < 2 < 5

02/09/05 TB 21939 < 5 13 < 5 50 < 15 < 5 56 744 < 5 13 < 20 < 4 < 5 11 < 50 < 5 < 5 < 2 < 505/17/05 TB 22539 < 25 < 25 < 25 29 < 75 < 25 66 709 < 25 < 25 < 100 < 20 < 25 < 25 4260 < 25 < 25 < 10 < 25

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 190 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

MW-114JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: Main Waste

12/01/03 TB 20085 4600 290 < 50 170 2580 2650 < 50 < 50 590 < 50 J 390 < 40 < 50 < 50 65700 50 2800 110 129012/02/03 TB 20091 3300 < 250 < 250 < 250 2050 2150 < 250 < 250 550 < 250 < 1000 < 200 < 250 < 250 75700 < 250 2400 J 100 125012/03/03 TB 20119 3000 250 < 250 < 250 J 1900 2300 < 250 < 250 600 < 250 < 1000 < 200 < 250 < 250 62400 < 250 2550 J 100 125012/15/03 TB 20182 250 16 < 10 12 600 138 < 10 < 10 42 < 10 88 < 8 < 10 < 10 16100 < 10 104 J 4 10612/31/03 TB 20196 241 16 < 5 7 69 155 < 5 < 5 13 < 5 J 29 < 4 < 5 < 5 3240 < 5 36 < 2 43

01/05/04 TB 20198 290 26 < 5 12 J 36 239 < 5 < 5 17 < 5 < 20 < 4 < 5 < 5 4700 < 5 65 < 2 6001/12/04 TB 20208 354 49 < 10 26 J 52 474 < 10 < 10 14 < 10 < 40 < 8 < 10 < 10 5600 < 10 128 J 16 10101/21/04 TB 20248 208 194 14 86 < 30 818 14 < 10 < 10 < 10 < 40 < 8 < 10 14 15500 12 230 66 13005/19/04 TB 20745 64 216 < 5 49 < 15 12 < 5 < 5 < 5 5 < 20 < 4 14 14 7360 9 < 5 J 9 806/29/04 TB 20843 29 132 < 5 18 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 12 5 347 5 < 5 J 2 J 2

07/22/04 TB 20871 < 5 121 < 5 6 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 13 6 < 50 < 5 < 5 < 2 < 5

02/09/05 TB 21940 < 5 30 < 5 10 89 24 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 6330 < 5 7 < 2 J 3

05/12/05 TB 22511 < 5 6 < 5 < 5 < 15 30 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 985 < 5 < 5 J 2 J 3

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 191 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

MW-119JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: Main Waste

03/09/04 TB 20580 6 18 < 5 11 < 15 13 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 4620 < 5 < 5 J 7 < 503/16/04 TB 20589 < 5 23 < 5 12 < 15 13 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 5310 < 5 < 5 J 8 < 503/22/04 TB 20615 < 5 24 < 5 12 < 15 10 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 6420 < 5 < 5 J 9 < 507/22/04 TB 20872 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 511/22/04 TB 21503 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 512/07/04 TB 21557 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

02/09/05 TB 21941 < 5 13 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 147 < 5 < 5 < 2 < 506/17/05 TB 22721 < 5 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 689 < 5 < 5 < 2 < 5

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 192 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

JW-001JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: MW-10 North

10/16/96 TB 00573 55 < 12 < 12 < 12 < 25 340 < 12 < 12 < 12 < 25 < 12 59000 < 12 91 < 25 16

01/19/97 TB 01024 < 12 < 12 < 12 < 25 250 < 12 < 12 < 12 < 25 < 12 190000 < 12 18 < 25 4002/16/97 TB 01702 < 10 < 10 < 10 < 20 230 < 10 < 10 < 10 < 20 < 10 E 160000 < 10 J 7 < 20 2803/16/97 TB 01851 < 5 < 5 < 5 10 97 < 5 < 5 < 5 < 10 < 5 < 50 < 5 < 5 < 10 604/07/97 TB 01987 < 12 < 12 < 12 < 25 170 < 12 J 6 J 5 < 25 < 12 E 180000 < 12 < 12 < 25 1806/08/97 TB 02268 < 5 < 5 < 5 < 10 130 < 5 < 5 < 5 < 10 < 5 E 99000 < 5 < 5 < 10 1209/02/97 TB 02733 < 5 < 5 < 5 < 10 24 < 5 < 5 8 < 10 < 5 E 43000 < 5 < 5 < 10 < 511/29/97 TB 03368 < 5 < 5 < 5 U 20 50 < 5 < 5 < 10 < 5 J 8 J 8 < 5 < 10 < 5 < 10 < 15 J 2

02/01/98 TB 03727 < 5 < 5 < 5 < 20 75 < 5 < 10 < 5 J 2 J 6 < 5 < 10 < 5 < 10 < 15 J 3

06/03/98 TB 04686 < 5 < 5 < 5 < 20 66 < 5 < 5 < 10 < 5 < 10 J 8 < 5 < 10 E 77000 < 5 < 10 < 15 J 3

09/10/98 TB 05792 < 10 < 5 < 5 < 5 < 20 26 < 5 < 5 < 10 < 5 < 10 < 10 < 5 < 10 E 65000 < 5 < 10 < 15 < 511/07/98 TB 06463 < 100 < 5 < 5 J 4 < 20 13 < 5 < 5 < 10 < 5 < 10 < 10 < 5 < 10 98000 < 5 < 10 < 15 < 5

02/08/99 TB 07421 < 100 J 2 < 5 10 < 20 J 3 < 5 < 5 < 10 < 5 < 10 < 10 < 5 < 10 E 14000 < 5 < 10 < 15 < 505/14/99 TB 08287 < 100 < 5 < 5 < 5 < 20 J 2 < 5 < 5 < 10 < 5 < 10 < 10 < 5 < 10 D 24000 < 5 < 10 < 15 < 508/16/99 TB 09285 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 D 6400 < 5 < 5 < 5 < 511/05/99 TB 10360 11 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 8130 < 5 < 5 < 5 < 5

05/18/00 TB 11782 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 D 10900 < 5 < 5 < 5 < 510/23/00 TB 12893 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 D 6100 < 5 < 5 < 5 < 5

02/21/01 TB 13833 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 7 < 5 < 5 D 9300 < 5 < 5 < 5 < 505/04/01 TB 14316 49 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 8 < 5 < 5 D 6100 < 5 < 5 < 5 < 508/15/01 TB 14963 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 11 < 5 < 5 D 74000 < 5 < 5 < 5 < 511/05/01 TB 15511 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 14 < 5 < 5 D 40000 < 5 < 5 < 5 < 5

03/11/02 TB 16683 < 10 < 5 < 5 < 5 < 5 J 2 < 5 < 5 < 5 < 5 < 50 19 < 5 < 5 D 140000 < 5 < 5 < 5 < 505/21/02 TB 17075 < 10 < 5 < 5 < 5 < 5 J 3 < 5 < 5 < 5 < 5 < 50 24 < 5 < 5 D 180000 < 5 < 5 < 5 < 508/27/02 TB 17786 J 5 < 5 < 5 < 5 < 5 J 4 < 5 < 5 < 5 < 5 < 50 20 < 5 < 5 D 190000 < 5 < 5 < 5 J 2

03/06/03 TB 18926 < 10 < 5 < 5 < 5 < 5 J 4 < 5 < 5 < 5 < 5 < 50 22 < 5 < 5 D 290000 < 5 < 5 < 5 < 505/08/03 TB 19219 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 26 < 5 < 5 202000 < 5 < 5 < 2 < 508/15/03 TB 19642 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 27 < 5 < 5 368000 < 5 < 5 < 2 < 511/11/03 TB 19977 < 5 < 5 < 5 < 5 < 15 5 < 5 < 5 < 5 < 5 < 20 22 < 5 < 5 312000 < 5 < 5 < 2 < 5

02/04/04 TB 20263 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 19 < 5 < 5 321000 < 5 < 5 < 2 < 508/19/04 TB 20909 < 5 < 5 < 5 < 5 J 26 < 5 < 5 < 5 < 5 < 5 < 20 19 < 5 < 5 326000 < 5 < 5 < 2 < 510/21/04 TB 21364 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 21 < 5 < 5 347000 < 5 < 5 < 2 < 511/17/04 TB 21450 < 5 < 5 < 5 < 5 < 15 13 < 5 < 5 < 5 < 5 < 20 J 7 < 5 < 5 83100 < 5 < 5 < 2 < 512/08/04 TB 21588 < 5 < 5 < 5 < 5 < 15 21 < 5 < 5 < 5 < 5 < 20 J 5 < 5 < 5 101000 < 5 < 5 < 2 < 5

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 193 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

JW-001JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: MW-10 North

01/10/05 TB 21743 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 J 6 < 5 < 5 143000 < 5 < 5 < 2 < 502/11/05 TB 21979 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 J 6 < 5 < 5 144000 < 5 < 5 < 2 < 505/04/05 TB 22419 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 15 < 5 < 5 263000 < 5 < 5 < 2 < 5

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 194 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

JW-003JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: MW-10 North

02/16/97 TB 01703 < 500 < 500 < 500 < 1000 5900 < 500 590 J 270 < 1000 J 290 E 53000 J 140 1200 < 1000 180003/16/97 TB 01853 < 250 < 250 < 250 1200 6100 < 250 570 < 250 1900 < 250 E 120000 < 250 1300 < 500 170004/07/97 TB 01990 < 250 < 250 < 250 710 4300 < 250 370 < 250 980 < 250 E 57000 < 250 800 < 500 100005/06/97 TB 02102 < 120 < 120 < 120 < 250 2400 < 120 250 < 120 530 < 120 E 29000 < 120 530 < 250 73008/11/97 TB 02549 < 12 < 12 < 12 < 25 260 J 11 J 12 J 8 < 25 < 12 E 16000 < 12 45 < 25 13011/05/97 TB 03202 < 5 < 5 7 < 10 19 7 < 5 < 5 < 10 < 5 < 5 < 5 < 10 J 2

03/09/98 TB 03952 < 5 < 5 9 < 10 8 19 < 5 < 5 < 10 < 5 E 1700 < 5 < 5 < 10 < 506/03/98 TB 04691 < 5 < 5 46 < 20 10 J 5 48 < 10 J 4 < 10 < 10 < 5 < 10 1700 < 5 < 10 < 15 J 509/10/98 TB 05793 1000 11 < 5 350 < 20 94 58 520 J 3 14 < 10 < 10 14 J 9 1000 < 5 70 J 3 12011/06/98 TB 06424 J 260 J 13 < 25 630 < 100 65 49 530 < 50 J 17 < 50 < 50 < 25 < 50 1300 < 25 J 9 < 75 J 11

12/04/98 TB 06865 J 130 J 11 < 25 530 < 100 40 33 430 J 10 < 25 < 50 < 50 < 25 < 50 1100 < 25 < 50 < 75 < 25

01/05/99 TB 07146 < 100 < 5 < 5 92 < 20 < 5 7 80 < 10 < 5 < 10 < 10 < 5 < 10 130 < 5 < 10 < 15 < 502/05/99 TB 07395 < 100 J 2 < 5 120 < 20 6 6 90 < 10 < 5 < 10 < 10 < 5 < 10 430 < 5 < 10 < 15 < 505/13/99 TB 08279 < 100 < 5 < 5 80 < 20 < 5 J 3 59 < 10 < 5 < 10 < 10 < 5 < 10 190 < 5 < 10 < 1508/16/99 TB 09286 < 10 < 5 < 5 71 < 5 < 5 < 5 54 < 5 < 5 < 50 < 5 < 5 < 5 280 < 5 < 5 < 5 < 510/08/99 TB 10019 < 10 < 5 < 5 28 < 5 < 5 < 5 25 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 511/05/99 TB 10361 12 < 5 < 5 22 < 5 < 5 < 5 22 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 5

02/02/00 TB 11071 < 10 < 5 < 5 29 < 5 11 < 5 11 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 8 < 5 < 1010/20/00 TB 12873 < 15 < 5 < 5 18 < 5 < 5 < 5 < 5 < 5 < 5 < 55 < 5 < 5 < 5 < 105 < 5 < 5 < 5 < 5

02/22/01 TB 13846 < 10 < 5 < 5 6 < 5 < 5 < 5 13 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 505/04/01 TB 14317 < 10 < 5 < 5 7 < 5 < 5 < 5 14 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 508/15/01 TB 14964 < 10 < 5 < 5 7 < 5 < 5 < 5 15 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 511/01/01 TB 15458 < 10 < 5 < 5 8 < 5 < 5 < 5 J 3 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 5

03/09/02 TB 16671 < 10 < 5 < 5 14 < 5 < 5 J 3 18 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 505/21/02 TB 17076 J 4 J 3 < 5 20 < 5 J 3 J 5 110 < 5 J 2 < 50 < 5 < 5 < 5 J 94 < 5 < 5 < 5 < 508/27/02 TB 17787 J 3 < 5 < 5 12 < 5 J 2 J 3 37 < 5 < 5 < 50 < 5 < 5 < 5 J 48 < 5 < 5 < 5 < 5

03/10/03 TB 18943 < 10 < 5 < 5 J 5 < 5 < 5 J 2 21 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 5

02/04/04 TB 20264 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 508/19/04 TB 20910 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

02/11/05 TB 21980 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 505/04/05 TB 22420 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 195 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

JW-004JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: MW-10 North

10/24/96 TB 00618 < 10 < 5 < 5 < 5 < 10 < 5 < 5 < 5 < 5 < 10 < 5 5500 < 5 < 5 < 10 < 5

03/11/02 TB 16684 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 5

02/21/03 TB 18744 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 5

02/04/04 TB 20265 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 508/19/04 TB 20911 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 511/17/04 TB 21451 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 512/08/04 TB 21589 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

01/10/05 TB 21744 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

02/11/05 TB 21981 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 506/16/05 TB 22684 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 196 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

JW-005JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: MW-10 North

10/24/96 TB 00619 < 10 < 50 < 50 < 50 < 100 < 50 < 50 < 50 < 50 < 100 < 50 33000 < 50 < 50 < 100 < 50

03/12/02 TB 16693 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 5

02/21/03 TB 18745 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 5

02/04/04 TB 20266 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 508/19/04 TB 20912 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

02/11/05 TB 21982 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 505/04/05 TB 22422 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 263 < 5 < 5 < 2 < 5

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 197 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

JW-008RJUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: MW-10 North

03/16/97 TB 01852 < 1000 < 1000 < 1000 6500 14000 < 1000 1500 < 1000 < 2000 < 1000 E 480000 < 1000 3100 < 2000 330004/07/97 TB 01988 < 1200 < 1200 < 1200 8200 30000 < 1200 3000 < 1200 11000 < 1200 E 560000 < 1200 6800 < 2500 520008/11/97 TB 02548 < 500 < 500 < 500 2000 8900 < 500 630 < 500 < 1000 < 500 E 430000 < 500 1800 < 1000 110011/05/97 TB 03203 < 170 < 170 < 170 1100 3900 < 170 330 < 170 620 < 170 < 170 800 < 330 1100

03/09/98 TB 03953 < 50 < 50 J 34 840 1600 < 50 190 < 50 530 < 50 E 200000 < 50 440 < 100 33005/08/98 TB 04499 < 25 < 25 < 25 < 25 B 690 880 < 25 80 < 25 260 < 25 E 140000 < 25 230 < 50 19007/13/98 TB 05032 < 200 < 100 < 100 < 100 J 95 940 < 100 < 100 55 < 100 < 200 < 200 < 100 < 200 E 580000 < 100 150 < 300 J 6808/06/98 TB 05373 55 < 25 < 25 < 25 110 860 < 25 < 25 65 < 25 < 50 < 50 < 25 < 50 270000 < 25 140 < 75 11511/06/98 TB 06423 < 500 < 25 < 25 < 25 < 100 1200 < 25 < 25 73 < 25 < 50 < 50 < 25 < 50 260000 < 25 180 < 75 9312/01/98 TB 06835 J 13 < 25 < 25 < 25 < 100 1000 < 25 < 25 65 < 25 < 50 < 50 < 25 < 50 450000 < 25 99 < 75 71

01/05/99 TB 07147 < 1000 < 50 < 50 < 50 < 200 780 < 50 < 50 J 60 < 50 < 100 < 100 < 50 < 100 180000 < 50 J 95 < 150 J 92

02/05/99 TB 07396 < 500 < 25 < 25 < 25 < 100 D 3200 < 25 < 25 190 < 25 < 50 J 25 < 25 < 50 D 690000 < 25 230 < 75 310

03/18/99 TB 07794 < 500 < 25 < 25 < 25 < 100 1100 < 25 < 25 85 < 25 < 50 J 14 < 25 < 50 D 180000 < 25 110 < 75 120

04/12/99 TB 07992 < 500 < 25 < 25 < 25 < 100 750 < 25 < 25 J 38 < 25 < 50 < 50 < 25 < 50 D 100000 < 25 68 < 75 J 4905/13/99 TB 08280 < 500 < 25 < 25 < 25 < 100 1200 < 25 < 25 70 < 25 < 50 < 50 < 25 < 50 D 260000 < 25 95 < 7506/06/99 TB 08589 < 500 < 25 < 25 < 25 < 100 750 < 25 < 25 J 48 < 25 < 50 < 50 < 25 < 50 D 130000 < 25 52 < 75 5307/06/99 TB 08889 < 500 < 25 < 25 < 25 < 100 D 1100 < 25 < 25 73 < 25 < 50 < 50 < 25 < 50 D 230000 < 25 87 < 75 12008/16/99 TB 09287 < 50 < 25 < 25 < 25 < 25 550 < 25 < 25 26 < 25 < 250 < 25 < 25 < 25 D 170000 < 25 J 16 < 25 J 4709/09/99 TB 09641 < 50 < 25 < 25 < 25 < 25 360 < 25 < 25 J 11 < 25 < 250 < 25 < 25 < 25 D 84000 < 25 J 13 < 25 J 3510/08/99 TB 10020 < 10 < 5 < 5 < 5 < 5 230 < 5 < 5 12 < 5 < 50 < 5 < 5 < 5 D 100000 < 5 J 4 < 5 4111/05/99 TB 10362 38 < 13 < 13 < 13 < 13 520 < 13 < 13 30 < 13 < 125 < 13 < 13 < 13 90300 < 13 18 < 13 40

01/16/00 TB 10933 < 10 < 5 < 5 < 5 24 140 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 D 65000 < 5 7 < 5 802/02/00 TB 11072 < 10 < 5 < 5 < 5 11 140 < 5 < 5 7 < 5 < 50 7 < 5 < 5 D 70400 < 5 12 < 5 2803/03/00 TB 11280 < 10 < 5 < 5 < 5 < 5 110 < 5 < 5 6 < 5 < 50 7 < 5 < 5 D 53000 < 5 8 < 5 1304/07/00 TB 11518 < 10 < 5 < 5 < 5 < 5 63 < 5 < 5 5 < 5 < 50 J 5 < 5 < 5 D 40000 < 5 6 < 5 1305/03/00 TB 11621 17 < 5 < 5 < 5 < 5 41 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 D 29000 < 5 J 4 < 5 < 505/18/00 TB 11783 < 10 < 5 < 5 < 5 < 5 28 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 D 35000 < 5 < 5 < 5 < 507/04/00 TB 12092 < 10 < 5 < 5 < 5 < 5 24 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 D 27000 < 5 < 5 < 5 < 508/02/00 TB 12300 < 10 < 5 < 5 < 5 < 5 22 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 270000 < 5 < 5 < 5 < 509/06/00 TB 12561 31 < 5 < 5 < 5 < 5 22 < 5 < 5 J 3 < 5 < 50 < 5 < 5 < 5 D 17000 < 5 J 4 < 5 J 610/02/00 TB 12719 < 10 < 5 < 5 < 5 < 5 23 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 D 31000 < 5 J 4 < 5 J 5

10/20/00 TB 12874 < 15 < 5 < 5 < 5 < 5 17 < 5 < 5 < 5 < 5 < 55 < 5 < 5 < 5 D 31005 < 5 J 4 < 5 < 511/02/00 TB 13081 < 10 < 5 < 5 < 5 < 5 20 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 D 16000 < 5 < 5 < 5 < 512/04/00 TB 13354 < 10 < 5 < 5 < 5 < 5 12 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 D 12000 < 5 < 5 < 5 < 5

01/02/01 TB 13447 < 10 < 5 < 5 < 5 < 5 12 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 D 12000 < 5 < 5 < 5 < 502/03/01 TB 13707 < 10 < 5 < 5 < 5 < 5 11 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 D 27000 < 5 < 5 < 5 J 302/21/01 TB 13834 < 10 < 5 < 5 < 5 < 5 12 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 D 16000 < 5 < 5 < 5 < 5

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 198 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

JW-008RJUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: MW-10 North

05/04/01 TB 14318 < 10 < 5 < 5 < 5 < 5 11 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 D 9300 < 5 < 5 < 5 J 105/30/01 TB 14537 67 < 5 < 5 < 5 < 5 10 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 D 13000 < 5 < 5 < 5 < 507/05/01 TB 14722 94 < 5 < 5 < 5 < 5 9 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 D 18000 < 5 < 5 < 5 J 108/08/01 TB 14890 200 < 5 < 5 < 5 < 5 9 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 D 120000 < 5 < 5 < 5 < 509/06/01 TB 15203 J 5 < 5 < 5 < 5 < 5 7 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 D 20000 < 5 < 5 < 5 < 510/09/01 TB 15321 16 < 5 < 5 < 5 11 8 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 D 14000 < 5 < 5 < 5 < 510/30/01 TB 15428 < 10 < 5 < 5 < 5 < 5 6 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 D 9600 < 5 < 5 < 5 < 512/05/01 TB 15850 67 < 5 < 5 < 5 < 5 J 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 D 9300 < 5 < 5 < 5 < 5

01/03/02 TB 16087 62 < 5 < 5 < 5 < 5 9 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 D 21000 < 5 J 3 < 5 < 501/25/02 TB 16252 27 < 5 < 5 < 5 < 5 6 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 D 14000 < 5 < 5 < 5 < 5

03/28/02 TB 16748 < 5 < 5 < 5 J 4 < 5 J 5 < 5 < 5 < 5 < 5 < 50 J 3 < 5 < 5 D 21000 < 5 < 5 < 5 J 2

04/30/02 TB 16885 < 10 < 5 < 5 J 5 < 5 J 5 < 5 < 5 J 2 < 5 < 50 J 3 < 5 < 5 D 16000 < 5 < 5 < 5 J 2

06/08/02 TB 17277 48 < 5 < 5 J 5 6 J 4 < 5 < 5 < 5 < 5 < 50 J 3 < 5 < 5 D 22000 < 5 J 1 < 5 < 507/14/02 TB 17424 < 10 < 5 < 5 J 5 < 5 6 < 5 < 5 J 1 < 5 < 50 J 3 < 5 < 5 D 24000 < 5 J 1 < 5 J 2

08/09/02 TB 17655 J 4 < 5 < 5 5 < 5 5 < 5 < 5 J 1 < 5 < 50 J 2 < 5 < 5 D 10000 < 5 J 1 < 5 J 309/19/02 TB 17963 J 4 < 5 < 5 5 < 5 6 < 5 < 5 J 1 < 5 < 50 J 2 < 5 < 5 D 12000 < 5 J 1 < 5 J 309/30/02 TB 18000 23 < 5 < 5 J 5 < 5 6 < 5 < 5 J 1 < 5 < 50 J 1 < 5 < 5 D 12000 < 5 J 1 < 5 J 310/29/02 TB 18105 < 10 < 5 < 5 < 5 < 5 5 < 5 < 5 J 1 < 5 < 50 < 5 < 5 < 5 D 15000 < 5 J 1 < 5 J 211/26/02 TB 18323 J 9 < 5 < 5 J 5 < 5 6 < 5 < 5 J 1 < 5 < 50 < 5 < 5 < 5 D 27000 < 5 J 1 < 5 < 512/07/02 TB 18340 75 < 5 < 5 J 4 < 5 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 D 37000 < 5 < 5 < 5 < 5

01/02/03 TB 18400 21 < 5 < 5 J 4 < 5 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 D 11000 < 5 < 5 < 5 J 203/10/03 TB 18944 < 10 < 5 < 5 J 3 < 5 6 < 5 < 5 J 1 < 5 < 50 J 2 < 5 < 5 D 14000 < 5 J 1 < 5 J 204/10/03 TB 19080 J 23 < 5 < 5 < 5 < 15 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 21300 < 5 < 5 < 2 < 505/08/03 TB 19210 < 5 17 < 5 8 < 15 26 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 14800 < 5 < 5 < 2 2206/11/03 TB 19363 < 5 < 5 < 5 < 5 < 15 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 5720 < 5 < 5 < 2 < 507/16/03 TB 19493 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 8370 < 5 < 5 < 2 < 508/15/03 TB 19633 < 5 < 5 < 5 < 5 < 15 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 16200 < 5 < 5 < 2 < 509/11/03 TB 19790 9 < 5 < 5 < 5 < 15 9 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 16400 < 5 < 5 < 2 J 210/07/03 TB 19869 < 5 < 5 < 5 < 5 < 15 21 < 5 < 5 13 < 5 < 20 < 4 < 5 < 5 14300 < 5 12 < 2 5311/11/03 TB 19967 < 5 < 5 < 5 < 5 < 15 18 < 5 < 5 12 < 5 < 20 < 4 < 5 < 5 12100 < 5 9 < 2 4212/04/03 TB 20129 8 < 5 < 5 < 5 < 15 14 < 5 < 5 8 < 5 < 20 < 4 < 5 < 5 14200 < 5 5 < 2 26

02/04/04 TB 20269 < 5 < 5 < 5 < 5 < 15 11 < 5 < 5 6 < 5 < 20 < 4 < 5 < 5 22100 < 5 < 5 < 2 8

08/19/04 TB 20915 < 5 < 5 < 5 < 5 < 15 8 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 15200 < 5 < 5 < 2 < 510/21/04 TB 21365 < 5 < 5 < 5 < 5 < 15 7 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 14600 < 5 < 5 < 2 < 511/17/04 TB 21452 < 5 < 5 < 5 < 5 < 15 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 11100 < 5 < 5 < 2 < 512/08/04 TB 21590 < 5 < 5 < 5 < 5 < 15 7 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 16800 < 5 < 5 < 2 < 5

01/10/05 TB 21745 < 5 < 5 < 5 < 5 < 15 7 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 16600 < 5 < 5 < 2 < 5

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 199 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

JW-008RJUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: MW-10 North

02/11/05 TB 21985 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 11200 < 5 < 5 < 2 < 504/07/05 TB 22299 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 5980 < 5 < 5 < 2 < 5

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 200 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

MW-010JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: MW-10 North

02/05/96 TB 01810 < 3330 < 1665 48000 14000 < 1665 60000 < 16650 4700 < 3330 4900

01/19/97 TB 01020 < 50 < 50 < 50 < 100 980 < 50 110 < 50 < 100 < 50 47000 < 50 140 < 100 19003/16/97 TB 01879 J 8 < 25 < 25 < 50 600 < 25 95 < 25 < 50 < 25 E 180000 < 25 110 < 50 18004/08/97 TB 01982 < 50 < 50 < 50 < 100 1100 < 50 160 110 < 100 < 50 E 300000 < 50 160 < 100 27005/06/97 TB 02106 < 100 < 100 < 100 < 200 1900 < 100 360 < 100 < 200 < 100 E 250000 < 100 290 < 200 51008/11/97 TB 02550 < 120 < 120 < 120 < 250 2600 < 120 480 < 120 < 250 < 120 E 400000 < 120 440 < 250 59011/05/97 TB 03206 J 3 < 5 < 5 10 200 < 5 23 < 5 < 10 < 5 < 5 9 < 10 18

06/03/98 TB 04696 < 25 < 25 < 25 < 100 < 25 < 25 < 25 < 50 < 25 < 50 < 50 < 25 < 50 E 68000 < 25 < 50 < 75 < 2509/18/98 TB 05870 < 50 < 25 < 25 < 25 < 100 < 25 < 25 < 25 < 50 < 25 < 50 < 50 < 25 < 50 29000 < 25 < 50 < 75 < 25

10/12/98 TB 06135 < 100 < 5 < 5 < 5 < 20 < 5 < 5 < 5 < 10 < 5 < 10 < 10 < 5 < 10 20000 < 5 < 10 < 15 < 511/09/98 TB 06494 < 500 < 25 < 25 < 25 < 100 < 25 < 25 < 25 < 50 < 25 < 50 < 50 < 25 < 50 15000 < 25 < 50 < 75 < 25

02/08/99 TB 07430 < 100 < 5 < 5 < 5 < 20 J 2 < 5 < 5 < 10 < 5 < 10 < 10 < 5 < 10 E 11000 < 5 < 10 < 15 < 508/17/99 TB 09327 < 10 J 4 < 5 < 5 < 5 20 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 D 5900 < 5 < 5 < 5 < 5

02/02/00 TB 11077 < 10 J 2 < 5 < 5 < 5 12 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 D 20800 < 5 < 5 < 5 < 510/20/00 TB 12875 < 15 < 5 < 5 < 5 < 5 11 < 5 < 5 < 5 < 5 < 55 < 5 < 5 < 5 D 150005 < 5 < 5 < 5 < 5

02/21/01 TB 13835 < 10 < 5 < 5 < 5 < 5 6 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 D 22000 < 5 < 5 < 5 < 508/15/01 TB 14966 < 10 < 5 < 5 < 5 < 5 7 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 E 8900 < 5 < 5 < 5 J 111/05/01 TB 15512 < 10 < 5 < 5 < 5 5 10 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 D 35000 < 5 < 5 < 5 < 5

03/08/02 TB 16656 < 10 < 5 < 5 < 5 9 J 3 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 D 19000 < 5 < 5 < 5 J 105/21/02 TB 17070 < 10 < 5 < 5 < 5 < 5 6 < 5 < 5 J 1 < 5 < 50 < 5 < 5 < 5 D 110000 < 5 < 5 < 5 J 208/29/02 TB 17811 < 10 < 5 < 5 < 5 10 7 < 5 < 5 J 2 < 5 < 50 < 5 < 5 < 5 D 61000 < 5 J 1 < 5 J 311/06/02 TB 18147 39 < 5 < 5 < 5 24 J 4 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 D 82000 < 5 < 5 < 5 < 5

02/21/03 TB 18747 J 5 < 5 < 5 < 5 24 20 < 5 < 5 J 3 < 5 < 5 < 5 < 5 < 5 D 35000 < 5 19 < 5 6505/09/03 TB 19222 < 5 < 5 < 5 < 5 < 15 6 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 122000 < 5 < 5 < 2 908/15/03 TB 19645 < 5 < 5 < 5 < 5 J 16 10 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 81400 < 5 < 5 < 2 < 511/11/03 TB 19962 26 < 5 < 5 < 5 41 73 < 5 < 5 70 < 5 < 20 < 4 < 5 < 5 57600 < 5 123 < 2 167

02/18/04 TB 20388 10 < 5 < 5 < 5 290 130 < 5 < 5 66 < 5 57 < 4 < 5 < 5 101000 < 5 207 < 2 26105/18/04 TB 20723 44 < 5 < 5 < 5 355 155 < 5 < 5 155 < 5 161 < 4 < 5 < 5 189000 < 5 273 < 2 455

06/29/04 TB 20829 12 < 10 < 10 < 10 320 68 < 10 < 10 62 < 10 92 < 8 < 10 < 10 88300 < 10 143 < 4 258

08/18/04 TB 20907 < 5 < 5 < 5 < 5 163 44 < 5 < 5 31 < 5 42 < 4 < 5 < 5 146000 < 5 77 < 2 113

10/21/04 TB 21376 < 5 < 5 < 5 < 5 < 15 7 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 39600 < 5 < 5 < 2 < 511/18/04 TB 21463 < 5 < 5 < 5 < 5 < 15 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 37900 < 5 < 5 < 2 < 512/08/04 TB 21601 < 5 < 5 < 5 < 5 < 15 6 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 35100 < 5 < 5 < 2 < 5

01/10/05 TB 21756 < 5 < 5 < 5 < 5 < 15 6 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 22000 < 5 < 5 < 2 < 5

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 201 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

MW-010JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: MW-10 North

02/11/05 TB 21991 < 5 < 5 < 5 < 5 < 15 7 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 18000 < 5 < 5 < 2 505/04/05 TB 22440 < 5 < 5 < 5 < 5 < 15 8 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 19100 < 5 < 5 < 2 < 5

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 202 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

MW-010 EW1JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: MW-10 North

07/21/96 TB 00089 220 < 500 < 500 < 500 11000 11000 < 500 < 500 2200 < 500 13000 < 500 < 500 1500000 < 500 4300 < 1000 420008/18/96 TB 00257 < 480 < 50 < 50 < 50 760 1300 < 50 < 50 200 < 24 1100 < 50 < 50 308000 < 50 490 < 100 39009/16/96 TB 00456 < 1000 < 1000 < 1000 6400 9600 < 1000 < 1000 < 800 < 1000 8100 < 1000 < 1000 1700000 < 1000 2600 < 2000 170010/20/96 TB 00577 < 250 < 250 < 250 2100 5000 < 250 1200 < 250 3400 < 250 230000 < 250 2100 < 500 200011/16/96 TB 00713 < 250 < 250 < 250 3600 6700 < 250 980 < 250 3500 < 250 520000 < 250 2200 < 500 190012/15/96 TB 00851 < 500 < 500 < 500 < 1000 5200 < 500 510 < 500 < 1000 < 500 460000 < 500 1300 < 1000 1100

01/19/97 TB 01021 < 500 < 500 < 500 3500 7500 < 500 1200 < 500 4100 < 500 750000 < 500 2500 < 1000 240002/16/97 TB 01694 < 250 < 250 < 250 2000 5700 < 250 940 < 250 2500 < 250 E 600000 < 250 1800 < 500 180004/07/97 TB 01977 < 500 < 500 < 500 2700 5600 < 500 910 < 500 2400 < 500 E 660000 < 500 1700 < 1000 180006/08/97 TB 02267 < 250 < 250 < 250 1800 6800 < 250 1100 < 250 1900 < 250 E 680000 < 250 2100 < 500 2200

09/02/97 TB 02731 < 100 < 100 < 100 480 3600 < 100 650 170 < 200 < 100 E 280000 < 100 1200 < 200 1500

11/29/97 TB 03366 J 15 < 25 < 25 < 100 690 < 25 < 25 110 < 25 < 50 < 50 < 25 < 50 < 25 200 < 75 290

02/01/98 TB 03725 < 50 < 50 < 50 J 30 240 < 50 J 39 < 50 J 36 < 100 < 50 < 100 < 50 J 66 < 150 92

04/11/98 TB 04266 7 < 5 < 5 < 5 B 12 51 < 5 < 5 < 5 < 10 < 5 E 54000 < 5 9 < 10 4807/14/98 TB 05050 < 50 < 25 < 25 < 25 < 100 38 < 25 < 25 < 50 < 25 < 50 < 50 < 25 < 50 E 19000 < 25 < 50 < 75 J 1011/06/98 TB 06443 < 100 < 5 < 5 < 5 < 20 23 < 5 < 5 < 10 < 5 < 10 < 10 < 5 < 10 36000 < 5 < 10 < 15 < 512/01/98 TB 06831 < 100 < 5 < 5 < 5 < 20 12 < 5 < 5 < 10 < 5 < 10 < 10 < 5 < 10 30000 < 5 < 10 < 15 J 1

02/05/99 TB 07394 < 100 < 5 < 5 < 5 < 20 16 < 5 < 5 J 2 < 5 < 10 < 10 < 5 < 10 26000 < 5 J 1 < 15 805/13/99 TB 08273 < 100 < 5 < 5 < 5 < 20 10 < 5 < 5 J 2 < 5 < 10 < 10 < 5 < 10 D 6900 < 5 J 2 < 1508/14/99 TB 09260 < 10 < 5 < 5 < 5 < 5 9 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 5000 < 5 < 5 < 5 J 211/05/99 TB 10374 < 10 < 5 < 5 < 5 < 5 8 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 2100 < 5 < 5 < 5 J 1

05/19/00 TB 11792 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 D 26000 < 5 < 5 < 5 < 510/20/00 TB 12876 < 15 < 5 < 5 < 5 < 5 5 < 5 < 5 < 5 < 5 < 55 < 5 < 5 < 5 D 73005 < 5 < 5 < 5 < 5

02/21/01 TB 13836 < 10 < 5 < 5 < 5 9 17 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 D 50000 < 5 < 5 < 5 J 105/04/01 TB 14332 36 < 5 < 5 < 5 < 5 52 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 D 38000 < 5 < 5 < 5 < 508/15/01 TB 14967 < 10 < 5 < 5 < 5 < 5 20 < 5 < 5 J 5 < 5 < 50 < 5 < 5 < 5 D 7400 < 5 J 2 < 5 J 611/05/01 TB 15513 < 10 < 5 < 5 < 5 < 5 21 < 5 < 5 6 < 5 < 50 < 5 < 5 < 5 D 3000 < 5 < 5 < 5 < 5

03/08/02 TB 16657 < 10 < 5 < 5 < 5 < 5 J 2 < 5 < 5 < 5 < 5 < 50 J 2 < 5 < 5 D 4000 < 5 < 5 < 5 < 505/21/02 TB 17071 < 10 < 5 < 5 < 5 < 5 J 2 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 D 8200 < 5 < 5 < 5 < 5

08/29/02 TB 17810 < 10 < 5 < 5 < 5 < 5 J 2 < 5 < 5 < 5 < 5 < 50 J 1 < 5 < 5 D 8100 < 5 < 5 < 5 < 5

02/21/03 TB 18748 < 10 < 5 < 5 < 5 < 5 J 2 < 5 < 5 < 5 < 5 < 50 J 2 < 5 < 5 D 10000 < 5 < 5 < 5 < 505/09/03 TB 19223 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 7660 < 5 < 5 < 2 < 508/15/03 TB 19646 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 17200 < 5 < 5 < 2 < 511/11/03 TB 19963 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 9060 < 5 < 5 < 2 < 5

02/04/04 TB 20278 6 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 13600 < 5 < 5 < 2 < 5

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 203 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

MW-010 EW1JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: MW-10 North

08/19/04 TB 20930 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 11500 < 5 < 5 < 2 < 5

02/11/05 TB 21992 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 6550 < 5 < 5 < 2 < 505/04/05 TB 22441 < 5 < 5 < 5 < 5 < 15 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 28000 < 5 < 5 < 2 < 5

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 204 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

MW-010 EW2JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: MW-10 North

06/26/96 TB 01532 190 < 1700 < 1700 < 1700 < 3300 29000 < 1700 7200 < 1700 67000 < 1700 2600000 < 1700 11000 < 3300 1100010/20/96 TB 00578 < 500 < 500 < 500 8300 14000 < 500 4200 < 500 12000 < 500 680000 < 500 6200 < 1000 550011/16/96 TB 00714 < 500 < 500 < 500 11000 18000 < 500 3800 < 500 15000 < 500 1200000 < 500 < 500 < 1000 5700

01/19/97 TB 01022 < 1000 < 1000 < 1000 2000 26000 < 1000 5600 < 1000 < 2000 < 1000 760000 < 1000 9200 < 2000 860002/16/97 TB 01695 < 1200 < 1200 < 1200 6000 19000 < 1200 4200 J 320 9000 < 1200 E 620000 < 1200 6600 < 2500 620004/07/97 TB 01978 < 500 < 500 < 500 3500 14000 < 500 2900 < 500 4500 < 500 E 350000 < 500 4400 < 1000 450006/30/97 TB 02397 < 500 < 500 < 500 2100 7900 < 500 1500 < 500 2900 < 500 E 330000 < 500 2600 < 1000 250010/06/97 TB 02967 < 500 < 500 < 500 2400 9500 < 500 2000 < 500 1600 < 500 E 300000 < 500 3800 < 1000 3500

01/01/98 TB 03561 < 500 < 500 < 500 J 840 2600 < 500 < 500 J 710 < 500 J 730 < 1000 < 500 < 1000 < 500 1100 < 1500 2060

04/11/98 TB 04267 J 46 < 50 < 50 < 50 690 1800 < 50 330 < 50 670 < 50 E 300000 < 50 520 < 100 1300

05/08/98 TB 04498 < 50 < 50 < 50 < 50 B 560 1400 < 50 260 < 50 380 < 50 E 170000 < 50 380 < 100 840

06/03/98 TB 04683 < 100 < 100 < 100 B 420 1800 < 100 < 100 300 < 100 260 < 200 < 100 < 200 E 270000 < 100 450 < 300 1500

08/06/98 TB 05371 < 200 < 100 < 100 < 100 J 140 1500 < 100 < 100 J 120 < 100 < 200 < 200 < 100 < 200 390000 < 100 240 < 300 740

09/10/98 TB 05790 < 200 < 100 < 100 < 100 J 250 1500 < 100 < 100 J 160 < 100 J 190 < 200 < 100 < 200 E 230000 < 100 270 < 300 71010/12/98 TB 06129 < 500 < 50 < 50 < 50 < 200 D 620 < 50 < 50 50 < 50 < 100 < 100 < 50 < 100 170000 < 50 110 < 150 31011/06/98 TB 06444 < 1000 < 50 < 50 < 50 < 200 930 < 50 < 50 J 81 < 50 < 100 < 100 < 50 < 100 240000 < 50 170 < 150 52012/01/98 TB 06832 J 14 6 < 5 < 5 < 20 D 660 < 5 < 5 140 < 5 < 10 J 5 < 5 < 10 190000 < 5 180 < 15 590

01/05/99 TB 07148 < 1000 < 50 < 50 < 50 210 720 < 50 < 50 J 82 < 50 < 100 < 100 < 50 < 100 200000 < 50 120 < 150 31002/04/99 TB 07391 < 500 < 25 < 25 < 25 J 52 560 < 25 < 25 J 45 < 25 < 50 < 50 < 25 < 50 140000 < 25 70 < 75 35005/13/99 TB 08274 < 500 < 25 < 25 < 25 < 100 490 < 25 < 25 J 32 < 25 < 50 < 50 < 25 < 50 D 140000 < 25 J 21 < 7508/14/99 TB 09261 < 50 < 25 < 25 < 25 < 25 600 < 25 < 25 51 < 25 < 250 < 25 < 25 < 25 D 130000 < 25 J 17 < 25 5611/05/99 TB 10375 < 50 < 25 < 25 < 25 < 25 540 < 25 < 25 50 < 25 < 250 < 25 < 25 < 25 130000 < 25 J 15 < 25 110

05/19/00 TB 11793 < 10 < 5 < 5 < 5 < 5 100 < 5 < 5 8 < 5 < 50 < 5 < 5 < 5 D 80000 < 5 < 5 < 5 J 210/20/00 TB 12877 < 15 < 5 < 5 < 5 < 5 55 < 5 < 5 < 5 < 5 < 55 < 5 < 5 < 5 D 79005 < 5 < 5 < 5 < 5

02/21/01 TB 13837 < 10 < 5 < 5 < 5 < 5 43 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 D 53000 < 5 < 5 < 5 < 505/04/01 TB 14333 < 10 < 5 < 5 < 5 < 5 39 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 D 42000 < 5 < 5 < 5 < 508/15/01 TB 14968 < 10 < 5 < 5 < 5 < 5 39 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 D 80000 < 5 < 5 < 5 < 511/05/01 TB 15514 < 10 < 5 < 5 < 5 7 33 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 D 70000 < 5 < 5 < 5 < 5

03/08/02 TB 16658 < 10 < 5 < 5 < 5 < 5 29 < 5 < 5 J 3 < 5 < 50 J 4 < 5 < 5 D 130000 < 5 < 5 < 5 < 5

05/21/02 TB 17072 J 4 < 5 < 5 < 5 < 5 31 < 5 < 5 J 3 < 5 < 50 J 4 < 5 < 5 D 170000 < 5 J 1 < 5 J 5

08/29/02 TB 17814 J 5 < 5 < 5 < 5 < 5 38 < 5 < 5 J 3 < 5 < 50 J 2 < 5 < 5 D 140000 < 5 J 1 < 5 J 5

11/06/02 TB 18145 J 7 < 5 < 5 < 5 < 5 50 < 5 < 5 J 4 < 5 < 50 J 4 < 5 < 5 D 320000 < 5 J 2 < 5 J 6

02/21/03 TB 18749 J 6 < 5 < 5 < 5 < 5 58 < 5 < 5 J 5 < 5 < 50 J 4 < 5 < 5 D 250000 < 5 J 2 < 5 J 8

05/09/03 TB 19224 5 < 5 < 5 < 5 < 15 65 < 5 < 5 6 < 5 < 20 J 4 < 5 < 5 188000 < 5 < 5 < 2 1308/15/03 TB 19647 8 < 5 < 5 < 5 < 15 100 < 5 < 5 7 < 5 < 20 J 5 < 5 < 5 219000 < 5 < 5 < 2 11

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 205 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

MW-010 EW2JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: MW-10 North

11/11/03 TB 19964 8 < 5 < 5 < 5 < 15 129 < 5 < 5 10 < 5 < 20 J 4 < 5 < 5 254000 < 5 < 5 < 2 13

02/04/04 TB 20279 5 < 5 < 5 < 5 < 15 170 < 5 < 5 12 < 5 < 20 J 4 < 5 < 5 252000 < 5 < 5 < 2 1408/19/04 TB 20931 10 < 5 < 5 < 5 < 15 315 < 5 < 5 25 < 5 < 20 J 8 < 5 < 5 389000 < 5 6 < 2 3310/21/04 TB 21375 19 < 10 < 10 < 10 < 30 261 < 10 < 10 21 < 10 < 40 < 8 < 10 < 10 371000 < 10 < 10 < 4 2811/18/04 TB 21462 < 10 < 10 < 10 < 10 < 30 302 < 10 < 10 20 < 10 < 40 < 8 < 10 < 10 383000 < 10 < 10 < 4 2512/08/04 TB 21600 < 10 < 10 < 10 < 10 < 30 321 < 10 < 10 25 < 10 < 40 < 8 < 10 < 10 454000 < 10 < 10 < 4 32

01/10/05 TB 21755 < 10 < 10 < 10 < 10 < 30 328 < 10 < 10 23 < 10 < 40 < 8 < 10 < 10 204000 < 10 < 10 < 4 2902/11/05 TB 21993 11 < 10 < 10 < 10 < 30 335 < 10 < 10 27 < 10 < 40 < 8 < 10 < 10 276000 < 10 < 10 < 4 3604/07/05 TB 22301 11 < 10 < 10 < 10 < 30 256 < 10 < 10 18 < 10 < 40 < 8 < 10 < 10 370000 < 10 < 10 < 4 41

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 206 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

MW-010 EW3JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: MW-10 North

06/26/96 TB 01533 110 < 1000 < 1000 < 1000 14000 15000 < 1000 3400 < 1000 17000 < 1000 1100000 < 1000 5500 < 2000 540010/20/96 TB 00579 < 250 < 250 < 250 1300 4400 < 250 1400 < 250 2200 < 250 290000 < 250 1800 < 500 200011/16/96 TB 00715 < 250 < 250 < 250 1200 5000 < 250 1100 < 250 1700 < 250 380000 < 250 1600 < 500 1700

01/19/97 TB 01023 < 100 < 100 < 100 < 200 1700 < 100 350 50 < 200 < 100 77000 < 100 560 < 200 58002/16/97 TB 01696 < 83 < 83 < 83 390 1400 < 83 270 J 25 470 < 83 E 97000 < 83 420 < 170 44004/07/97 TB 01979 < 50 < 50 < 50 190 730 < 50 130 < 50 150 < 50 E 60000 < 50 210 < 100 23006/30/97 TB 02398 < 5 < 5 < 5 < 10 180 < 5 22 < 5 < 10 < 5 E 15000 < 5 30 < 10 5610/06/97 TB 02966 < 10 < 10 < 10 < 20 100 < 10 13 < 10 < 20 < 10 E 17000 < 10 22 < 20 34

01/01/98 TB 03562 J 2 < 5 < 5 < 20 27 < 5 < 5 J 8 < 5 < 10 < 10 < 5 < 10 < 5 13 < 15 46

06/03/98 TB 04684 < 5 < 5 < 5 < 20 < 5 < 5 < 5 < 10 < 5 < 10 < 10 < 5 < 10 E 4600 < 5 < 10 < 15 < 508/06/98 TB 05372 < 10 < 5 < 5 < 5 < 20 J 2 < 5 < 5 < 10 < 5 < 10 < 10 < 5 < 10 8600 < 5 < 10 < 15 < 511/06/98 TB 06445 < 100 < 5 < 5 < 5 < 20 < 5 < 5 < 5 < 10 < 5 < 10 < 10 < 5 < 10 8600 < 5 < 10 < 15 < 512/01/98 TB 06833 < 100 < 5 < 5 < 5 < 20 5 < 5 < 5 < 10 < 5 < 10 < 10 < 5 < 10 10000 < 5 J 4 < 15 8

02/04/99 TB 07392 < 100 J 3 < 5 < 5 < 20 J 1 < 5 < 5 < 10 < 5 < 10 < 10 < 5 < 10 4000 < 5 J 2 < 15 < 505/13/99 TB 08275 < 100 < 5 < 5 < 5 < 20 15 < 5 J 2 < 10 < 5 < 10 < 10 < 5 < 10 D 3200 < 5 J 6 < 1508/14/99 TB 09262 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 D 4400 < 5 < 5 < 5 < 511/05/99 TB 10376 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 4100 < 5 < 5 < 5 < 5

05/19/00 TB 11794 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 D 3100 < 5 < 5 < 5 < 510/23/00 TB 12891 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 D 4000 < 5 < 5 < 5 < 5

02/21/01 TB 13838 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 D 4300 < 5 < 5 < 5 < 505/04/01 TB 14334 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 D 4100 < 5 < 5 < 5 < 508/15/01 TB 14969 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 D 8200 < 5 < 5 < 5 < 511/05/01 TB 15515 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 D 5900 < 5 < 5 < 5 < 5

03/08/02 TB 16659 < 10 J 2 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 J 3 < 5 < 5 D 3000 < 5 < 5 < 5 < 505/21/02 TB 17073 < 10 J 2 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 J 3 < 5 < 5 D 3500 < 5 < 5 < 5 < 508/29/02 TB 17815 < 10 J 2 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 J 2 < 5 < 5 D 3200 < 5 < 5 < 5 < 5

02/21/03 TB 18750 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 J 4 < 5 < 5 2300 < 5 < 5 < 5 < 505/09/03 TB 19225 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 J 4 < 5 < 5 639 < 5 < 5 < 2 < 508/15/03 TB 19648 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 J 5 < 5 < 5 2290 < 5 < 5 < 2 < 5

11/11/03 TB 19965 8 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 1740 < 5 < 5 < 2 < 5

02/04/04 TB 20280 8 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 1290 < 5 < 5 < 2 < 508/18/04 TB 20908 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 2440 < 5 < 5 < 2 < 5

02/11/05 TB 21994 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 800 < 5 < 5 < 2 < 505/04/05 TB 22443 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 2390 < 5 < 5 < 2 < 5

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 207 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

MW-010 EW3JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: MW-10 North

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 208 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

MW-046JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: MW-10 North

02/16/97 TB 01700 J 4 < 5 < 5 < 10 11 < 5 < 5 < 5 < 10 < 5 E 2000 < 5 < 5 < 10 < 503/16/97 TB 01878 < 5 < 5 < 5 < 10 < 5 < 5 < 5 < 5 < 10 < 5 E 9800 < 5 < 5 < 10 J 204/08/97 TB 01981 < 5 < 5 < 5 < 10 < 5 < 5 < 5 11 < 10 < 5 E 630 < 5 < 5 < 10 < 5

02/18/99 TB 07556 < 100 < 5 < 5 < 5 < 20 < 5 < 5 < 5 < 10 < 5 < 10 J 1 < 5 < 10 < 100 < 5 < 10 < 15 < 508/17/99 TB 09330 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 820 < 5 < 5 < 5 < 5

10/23/00 TB 12895 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 5

02/22/01 TB 13849 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 508/20/01 TB 15041 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 J 2 < 5 < 5 < 100 < 5 < 5 < 5 < 5

03/08/02 TB 16669 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 J 2 < 5 < 5 < 100 < 5 < 5 < 5 < 505/21/02 TB 17085 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 J 3 < 5 < 5 < 100 < 5 < 5 < 5 < 508/29/02 TB 17819 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 640 < 5 < 5 < 5 < 5

02/21/03 TB 18752 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 J 2 < 5 < 5 J 23 < 5 < 5 < 5 < 5

02/18/04 TB 20390 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 508/19/04 TB 20933 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 510/21/04 TB 21377 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 753 < 5 < 5 < 2 < 511/18/04 TB 21464 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 1270 < 5 < 5 < 2 < 512/08/04 TB 21602 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 J 4 < 5 < 5 1670 < 5 < 5 < 2 < 5

01/10/05 TB 21757 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 605 < 5 < 5 < 2 < 502/11/05 TB 21996 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 837 < 5 < 5 < 2 < 504/07/05 TB 22303 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 209 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

KW-001JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: MW-10 South

10/24/96 TB 00622 4200 < 5000 < 5000 62000 < 10000 22000 96000 8900 < 5000 < 10000 < 5000 280000 < 5000 5500 < 10000 < 5000

02/16/97 TB 01704 910 < 500 14000 < 1000 18000 19000 1200 1100 < 1000 J 120 E 350000 < 500 4700 < 1000 190003/16/97 TB 01855 < 1200 < 1200 6800 2700 10000 10000 J 710 < 1200 J 710 < 1200 E 940000 < 1200 2200 < 2500 190004/07/97 TB 01989 < 500 < 500 6300 2300 8400 8900 650 J 280 1200 < 500 E 540000 < 500 1800 < 1000 140006/08/97 TB 02265 360 < 250 4400 1000 6600 8700 620 290 J 230 < 250 E 280000 < 250 1400 J 120 92009/03/97 TB 02734 < 500 < 500 8100 < 1000 2200 8200 J 260 880 < 1000 < 500 72000 < 500 670 < 1000 J 28011/29/97 TB 03369 58 < 50 1600 J 51 760 210 1800 170 J 41 < 100 < 100 J 25 J 30 < 50 370 < 150 320

02/01/98 TB 03728 J 31 < 50 1000 J 34 420 1000 J 68 < 50 J 29 < 100 J 21 < 100 < 50 210 < 150 23006/03/98 TB 04677 27 < 25 D 1700 J 16 210 100 D 1200 J 16 J 21 < 50 < 50 J 10 < 50 D 49000 < 25 97 < 75 120

09/10/98 TB 05794 760 80 < 50 D 14000 < 200 E 350 410 D 5200 J 52 J 49 < 100 < 100 < 50 J 34 22000 < 50 230 < 150 160

11/03/98 TB 06344 < 125000 < 125000 < 125000 < 125000 < 250000 J 110000 170000 530000 < 125000 < 250000 J 95000 < 1250000 < 125000 530000 < 250000 890000

11/03/98 TB 06345 3E+07

11/06/98 TB 06425 < 1000 J 21 < 50 2100 < 200 120 69 830 J 15 < 50 < 100 < 100 < 50 < 100 63000 < 50 J 33 < 150 J 16

12/01/98 TB 06836 J 240 J 16 < 25 800 < 100 150 43 580 < 50 < 25 < 50 < 50 < 25 < 50 15000 < 25 J 21 < 75 J 34

01/09/99 TB 07180 2300 34 < 5 D 2500 J 18 D 240 140 D 1500 39 15 < 10 J 2 21 13 D 18000 J 3 110 < 15 23002/05/99 TB 07397 139 7 < 5 D 790 < 20 30 21 D 250 J 4 < 5 < 10 < 10 J 4 < 10 D 14000 < 5 18 < 15 2505/13/99 TB 08278 < 500 < 25 < 25 150 < 100 40 J 15 270 J 7 < 25 < 50 < 50 < 25 < 50 10000 < 25 J 40 < 7508/16/99 TB 09288 230 J 11 < 25 350 < 25 62 27 380 < 25 < 25 < 250 < 25 < 25 < 25 D 17000 < 25 J 11 < 25 J 3010/08/99 TB 10021 290 J 10 < 13 510 < 13 48 30 400 < 13 < 13 < 125 < 13 < 13 < 13 D 14000 < 13 J 8 < 13 J 3311/05/99 TB 10363 290 < 25 < 25 380 < 25 45 30 440 < 25 < 25 < 250 < 25 < 25 < 25 13400 < 25 < 25 < 25 < 25

01/11/00 TB 10909 5200 < 500 < 500 1600 J 420 720 3200 610 1000 < 1000 < 500 64000 < 500 1400 < 1000 110001/16/00 TB 10934 400 170 < 100 3000 < 100 190 540 2900 < 100 2500 < 1000 < 100 < 100 < 100 D 58000 < 100 < 100 < 100 < 10002/02/00 TB 11073 < 200 160 < 100 1540 < 100 200 600 1980 < 100 1760 < 1000 < 100 < 100 < 100 D 49000 < 100 J 100 < 100 < 10003/03/00 TB 11281 < 200 160 < 100 600 < 100 240 540 2400 < 100 530 < 1000 < 100 < 100 < 100 42000 < 100 130 < 100 < 10005/03/00 TB 11622 1200 D 170 7 D 460 47 D 350 D 580 D 4200 140 D 370 < 50 < 5 29 81 D 26000 10 D 390 12 31005/18/00 TB 11784 2740 200 < 50 440 < 50 440 600 4610 110 330 < 500 < 50 < 50 54 D 25000 < 50 510 < 50 23007/04/00 TB 12093 2200 < 200 < 200 < 200 < 200 490 < 200 5700 290 670 < 2000 < 200 < 200 < 200 < 4000 < 200 790 < 200 J 36008/02/00 TB 12301 2200 J 240 < 250 270 < 250 380 570 5800 < 250 540 < 2500 < 250 < 250 < 250 62000 < 250 490 < 250 < 25009/06/00 TB 12562 1100 360 < 200 < 200 < 200 490 950 7600 < 200 480 < 2000 < 200 < 200 < 200 < 4000 < 200 640 < 200 < 20010/02/00 TB 12720 2560 440 < 200 < 200 < 200 410 1200 7000 J 190 400 < 2000 < 200 < 200 < 200 24000 < 200 510 < 200 J 280

10/20/00 TB 12878 2605 345 < 125 < 125 < 125 325 1105 4705 145 345 < 1255 < 125 < 125 J 105 30005 < 125 355 < 125 J 120

11/02/00 TB 13082 2900 270 < 200 390 < 200 760 660 4900 310 610 < 2000 < 200 < 200 < 200 < 4000 < 200 1100 < 200 J 600

11/07/00 TB 13133 1500

12/04/00 TB 13355 2700 240 < 80 320 < 80 180 530 2000 100 < 80 < 800 < 80 < 80 < 80 < 1600 < 80 240 < 80 J 210

01/02/01 TB 13448 7600 180 < 80 350 < 80 630 440 2300 570 230 < 800 < 80 90 < 80 7400 < 80 1400 < 80 103002/03/01 TB 13708 5700 200 < 125 520 < 125 610 510 2200 650 140 < 1250 < 125 < 125 < 125 18000 < 125 1300 < 125 1125

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 210 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

KW-001JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: MW-10 South

02/21/01 TB 13840 4600 140 < 80 330 < 80 430 420 2000 340 180 < 800 < 80 < 80 < 80 11000 < 80 700 < 80 60803/15/01 TB 14014 3700 140 < 80 390 < 80 420 400 2700 220 190 < 800 < 80 < 80 < 80 11000 < 80 610 < 80 41605/04/01 TB 14319 2100 180 < 125 460 < 125 410 590 4800 210 420 < 1250 < 125 < 125 < 125 23000 < 125 590 < 125 45005/30/01 TB 14538 1700 240 < 125 400 < 125 340 800 D 7400 175 480 < 1250 < 125 < 125 < 125 D 19000 < 125 460 < 125 37507/05/01 TB 14723 1300 310 < 200 370 < 200 370 940 7500 200 740 < 2000 < 200 < 200 < 200 9200 < 200 530 < 200 J 28008/08/01 TB 14891 120 25 < 20 25 < 20 30 72 560 J 19 62 < 200 < 20 < 20 < 20 430 < 20 44 < 20 J 2409/06/01 TB 15204 D 1600 D 260 < 5 D 200 < 5 D 290 D 720 D 5000 150 D 440 < 50 5 34 99 D 13000 12 D 350 37 33810/09/01 TB 15322 D 1500 D 250 J 5 D 210 < 5 D 320 D 690 D 4100 160 D 450 < 50 5 34 93 D 11000 11 D 370 45 34210/30/01 TB 15427 630 180 < 80 140 < 80 180 440 2500 91 130 < 800 < 80 < 80 < 80 6600 < 80 190 < 80 J 19212/05/01 TB 15851 310 57 < 20 260 < 20 250 110 540 < 20 23 < 200 < 20 < 20 J 15 5800 < 20 < 20 < 20 56

01/03/02 TB 16088 210 30 < 20 270 20 190 57 490 < 20 < 20 < 200 < 20 < 20 < 20 D 12000 < 20 < 20 < 20 < 2001/25/02 TB 16253 150 31 < 20 290 < 20 77 53 510 < 20 < 20 < 200 < 20 < 20 < 20 7600 < 20 < 20 < 20 < 2003/28/02 TB 16749 340 23 < 20 300 < 20 77 48 460 < 20 J 13 < 200 < 20 < 20 J 9 8000 < 20 < 20 < 20 J 28

04/30/02 TB 16886 340 28 < 20 320 < 20 100 62 560 < 20 J 15 < 200 < 20 < 20 J 11 D 10000 < 20 < 20 < 20 J 28

06/08/02 TB 17278 120 23 < 13 290 < 13 81 54 500 < 13 J 13 < 125 < 13 J 5 J 9 D 8400 < 13 < 13 < 13 2507/14/02 TB 17425 540 27 < 25 380 < 25 99 67 500 < 25 69 < 250 < 25 < 25 J 11 11000 < 25 < 25 < 25 J 2508/09/02 TB 17656 190 J 19 < 20 280 < 20 73 49 430 < 20 J 12 < 200 < 20 J 6 < 20 5100 < 20 < 20 < 20 J 2809/19/02 TB 17964 310 21 < 13 280 < 13 74 55 400 < 13 23 < 125 < 13 J 5 J 9 4400 < 13 < 13 J 3 2809/30/02 TB 18001 D 770 15 < 13 210 < 13 63 42 340 < 13 J 9 < 125 < 13 J 5 J 7 D 6900 < 13 < 13 < 13 2310/29/02 TB 18106 1070 23 < 13 180 < 13 68 60 460 < 13 13 < 125 < 13 J 5 J 10 D 6500 < 13 < 13 J 5 2311/26/02 TB 18324 220 16 < 10 180 < 10 74 36 390 < 10 J 6 < 100 < 10 J 4 J 6 D 13000 < 10 < 10 < 10 1812/07/02 TB 18341 180 20 < 10 230 < 10 82 38 390 < 10 42 < 100 < 10 J 5 J 8 D 20000 < 10 < 10 J 8 20

01/02/03 TB 18401 400 15 < 10 170 < 10 71 33 340 < 10 J 5 < 100 < 10 J 5 J 6 5200 < 10 < 10 < 10 1803/10/03 TB 18945 370 19 < 13 180 < 13 76 42 400 < 13 J 7 < 125 < 13 J 6 < 5 D 9700 < 13 < 13 < 13 2004/10/03 TB 19081 420 18 < 10 234 < 30 66 40 366 < 10 40 < 40 < 8 < 10 < 10 13000 < 10 < 10 J 6 2005/08/03 TB 19211 512 12 < 10 152 < 30 58 34 356 < 10 < 10 < 40 < 8 < 10 < 10 7800 < 10 < 10 < 4 1206/11/03 TB 19364 288 20 < 10 166 < 30 84 42 506 < 10 10 < 40 < 8 < 10 < 10 4760 < 10 < 10 < 4 2407/16/03 TB 19494 628 18 < 10 212 < 30 76 40 396 < 10 36 < 40 < 8 < 10 < 10 4940 < 10 < 10 J 8 2008/15/03 TB 19634 510 12 < 10 160 < 30 54 32 344 < 10 < 10 < 40 < 8 < 10 < 10 9650 < 10 < 10 < 4 1609/11/03 TB 19791 530 16 < 10 190 < 30 64 38 362 < 10 12 < 40 < 8 < 10 < 10 9000 < 10 < 10 < 4 1610/07/03 TB 19870 516 14 < 10 154 < 30 66 36 368 < 10 < 10 < 40 < 8 < 10 < 10 6940 < 10 < 10 < 4 16

11/11/03 TB 19968 374 36 < 10 124 88 72 58 1140 < 10 < 10 < 40 < 8 < 10 10 10700 < 10 < 10 < 4 24

12/04/03 TB 20130 505 20 < 12.5 150 < 37.5 68 35 398 < 12.5 < 12.5 < 50 < 10 < 12.5 < 12.5 16700 < 12.5 < 12.5 < 5 J 8

02/04/04 TB 20257 230 14 < 10 121 < 30 64 33 365 < 10 < 10 < 40 < 8 < 10 < 10 10200 < 10 < 10 < 4 17

04/09/04 TB 20667 369 14 < 10 160 < 30 66 36 402 < 10 < 10 < 40 < 8 < 10 < 10 11400 < 10 < 10 < 4 19

05/18/04 TB 20720 421 17 < 10 155 < 30 68 34 412 < 10 < 10 < 40 < 8 < 10 < 10 14000 < 10 < 10 < 4 1506/29/04 TB 20826 255 18 < 10 170 < 30 64 33 359 < 10 < 10 < 40 < 8 < 10 < 10 18500 < 10 < 10 < 4 < 10

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 211 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

KW-001JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: MW-10 South

08/19/04 TB 20917 334 18 < 10 145 < 30 84 35 355 < 10 < 10 < 40 < 8 < 10 < 10 13100 < 10 < 10 < 4 19

02/11/05 TB 21987 486 17 < 10 181 < 30 72 35 390 < 10 < 10 < 40 < 8 < 10 < 10 20600 < 10 < 10 < 4 1705/04/05 TB 22424 490 21 < 10 204 < 30 64 38 471 < 10 < 10 < 40 < 8 < 10 < 10 44900 < 10 < 10 < 4 J 4

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 212 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

KW-003JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: MW-10 South

02/16/97 TB 01706 J 520 < 1000 < 1000 2200 22000 < 1000 1600 < 1000 < 2000 < 1000 E 200000 < 1000 4600 < 2000 330003/16/97 TB 01858 6 < 5 < 5 < 10 190 J 3 < 5 < 5 < 10 < 5 120 < 5 16 49 < 504/07/97 TB 01993 < 1000 < 1000 < 1000 3100 17000 < 1000 J 800 < 1000 < 2000 < 1000 E 200000 < 1000 2900 < 2000 200005/06/97 TB 02104 540 < 1000 < 1000 < 1000 < 2000 16000 < 1000 J 640 < 1000 < 2000 < 1000 E 150000 < 1000 2700 < 2000 160008/11/97 TB 02547 J 420 < 500 < 500 7700 13000 1500 690 J 270 < 1000 < 500 E 150000 < 500 2700 < 1000 160011/05/97 TB 03204 J 390 < 500 1400 2800 12000 2400 620 < 500 J 940 < 500 < 500 2100 < 1000 2600

03/09/98 TB 03955 J 360 < 500 < 500 1400 11000 520 J 410 < 500 J 760 < 500 E 91000 < 500 1700 < 1000 160004/11/98 TB 04269 < 1000 < 1000 < 1000 < 1000 5600 17000 < 1000 < 1000 < 1000 2400 < 1000 E 240000 < 1000 2800 < 2000 < 100005/08/98 TB 04501 < 1000 < 1000 < 1000 < 1000 B 2700 18000 < 1000 J 740 < 1000 < 2000 < 1000 100000 < 1000 2800 < 2000 220006/03/98 TB 04688 J 420 < 500 < 500 J 1600 12000 < 500 < 500 J 360 < 500 J 620 < 1000 < 500 < 1000 84000 < 500 1900 < 1500 800

07/13/98 TB 05028 J 190 290 < 100 200 370 D 5200 < 100 350 260 < 100 J 190 < 200 < 100 < 200 D 39000 < 100 1300 < 300 910

08/06/98 TB 05375 300 120 < 100 J 60 400 3300 < 100 J 60 J 100 < 100 J 180 < 200 < 100 < 200 27000 < 100 540 < 300 400

09/17/98 TB 05854 < 500 < 250 < 250 < 250 J 320 1500 < 250 < 250 < 500 < 250 < 500 < 500 < 250 < 500 14000 < 250 J 220 < 750 < 25010/12/98 TB 06132 < 1000 < 50 < 50 < 50 < 200 770 < 50 < 50 J 21 < 50 < 100 < 100 < 50 < 100 7300 < 50 120 < 150 J 45

11/07/98 TB 06464 < 1000 J 33 < 50 J 14 < 200 680 < 50 < 50 J 16 < 50 < 100 < 100 < 50 < 100 18000 < 50 J 94 < 150 J 3712/01/98 TB 06802 < 500 26 < 25 J 12 < 100 500 < 25 J 13 J 10 < 25 < 50 < 50 < 25 < 50 6300 < 25 J 50 < 75 J 26

01/05/99 TB 07151 < 100 29 < 5 22 25 170 < 5 29 J 5 < 5 < 10 < 10 < 5 < 10 D 7600 < 5 17 < 15 1802/08/99 TB 07423 < 500 51 < 25 J 22 < 100 570 < 25 J 24 J 8 < 25 < 50 < 50 < 25 < 50 7500 < 25 J 50 < 75 6605/14/99 TB 08288 < 500 41 < 25 < 25 < 100 710 < 25 J 7 J 10 < 25 < 50 < 50 < 25 < 50 D 15000 < 25 58 < 75 6208/16/99 TB 09290 < 50 36 < 25 < 25 < 25 600 < 25 < 25 < 25 < 25 < 250 < 25 < 25 < 25 15000 < 25 J 12 < 25 2811/05/99 TB 10365 < 50 30 < 25 < 25 < 25 400 < 25 < 25 < 25 < 25 < 250 < 25 < 25 < 25 8300 < 25 < 25 < 25 < 25

01/16/00 TB 10935 12 49 < 5 120 < 5 180 23 110 < 5 64 < 50 < 5 < 5 < 5 D 8000 < 5 8 < 5 4902/03/00 TB 11083 < 10 37 < 5 33 < 5 150 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 D 7070 < 5 6 < 5 4503/03/00 TB 11282 < 20 42 < 10 23 < 10 200 < 10 < 10 < 10 < 10 < 100 < 10 < 10 < 10 D 6500 < 10 < 10 < 10 3804/07/00 TB 11519 < 20 38 < 10 < 10 < 10 180 < 10 < 10 < 10 < 10 < 100 < 10 < 10 < 10 D 6900 < 10 J 6 < 10 4005/03/00 TB 11623 < 10 39 < 5 < 5 < 5 D 160 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 D 10000 < 5 J 5 < 5 2705/18/00 TB 11786 15 37 < 5 < 5 < 5 180 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 D 6240 < 5 J 4 < 5 2207/04/00 TB 12094 52 40 < 5 < 5 < 5 200 < 5 < 5 J 5 < 5 < 50 < 5 < 5 < 5 D 5800 < 5 5 < 5 2808/02/00 TB 12302 < 10 35 < 5 < 5 < 5 220 < 5 < 5 J 4 < 5 < 50 < 5 < 5 < 5 D 63000 < 5 5 < 5 2309/06/00 TB 12563 288 40 < 10 < 10 < 10 D 180 < 10 < 10 J 8 < 10 < 100 < 10 < 10 < 10 D 32000 < 10 J 8 < 10 3010/02/00 TB 12721 < 10 42 < 5 < 5 < 5 220 < 5 < 5 9 < 5 < 50 < 5 < 5 < 5 D 11000 < 5 6 < 5 33

10/20/00 TB 12880 28 39 < 5 < 5 < 5 275 < 5 < 5 9 < 5 < 55 < 5 < 5 < 5 D 10005 < 5 7 < 5 J 9

11/02/00 TB 13083 27 39 < 5 < 5 < 5 D 200 < 5 < 5 7 < 5 < 50 < 5 < 5 < 5 D 11000 < 5 < 5 < 5 J 7

12/04/00 TB 13356 82 30 < 5 < 5 < 5 170 < 5 < 5 6 < 5 < 50 < 5 < 5 < 5 D 6500 < 5 J 4 < 5 18

01/02/01 TB 13449 < 10 33 < 5 < 5 < 5 190 < 5 < 5 6 < 5 < 50 < 5 < 5 < 5 D 6200 < 5 J 5 < 5 1802/03/01 TB 13709 < 10 27 < 5 < 5 < 5 150 < 5 < 5 5 < 5 < 50 < 5 < 5 < 5 D 13000 < 5 < 5 < 5 1602/22/01 TB 13852 < 10 25 < 5 J 3 < 5 120 < 5 < 5 J 4 < 5 < 50 < 5 < 5 < 5 D 8400 < 5 J 3 < 5 13

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 213 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

KW-003JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: MW-10 South

05/04/01 TB 14321 < 10 29 < 5 5 < 5 120 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 D 4900 < 5 < 5 < 5 1805/30/01 TB 14539 30 27 < 5 < 5 < 5 87 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 D 7900 < 5 < 5 < 5 1507/05/01 TB 14724 32 27 < 5 < 5 < 5 82 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 D 9300 < 5 < 5 < 5 2308/08/01 TB 14892 56 27 < 5 6 < 5 89 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 D 11000 < 5 < 5 < 5 < 509/06/01 TB 15205 52 27 < 5 6 < 5 86 < 5 8 J 4 < 5 < 50 < 5 < 5 < 5 D 9100 < 5 J 4 < 5 2110/09/01 TB 15323 14 28 < 5 5 7 91 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 D 8600 < 5 < 5 < 5 1910/30/01 TB 15426 J 6 29 < 5 J 4 < 5 60 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 D 4000 < 5 < 5 < 5 912/05/01 TB 15852 D 190 31 < 5 J 4 < 5 85 < 5 < 5 5 < 5 < 50 < 5 < 5 < 5 D 7300 < 5 < 5 < 5 7

01/03/02 TB 16089 19 24 < 5 6 < 5 94 < 5 < 5 5 < 5 < 50 < 5 < 5 < 5 D 12000 < 5 < 5 < 5 901/25/02 TB 16254 11 22 < 5 6 < 5 50 < 5 < 5 J 3 < 5 < 50 < 5 < 5 < 5 D 8500 < 5 < 5 < 5 13

03/28/02 TB 16750 J 7 21 < 5 9 < 5 55 < 5 < 5 J 2 < 5 < 50 J 2 < 5 < 5 D 9700 < 5 < 5 < 5 10

04/30/02 TB 16887 J 5 21 < 5 9 < 5 50 < 5 < 5 J 2 < 5 < 50 J 3 < 5 < 5 D 8800 < 5 < 5 < 5 9

06/10/02 TB 17281 < 10 20 < 5 8 < 5 45 < 5 < 5 < 5 < 5 < 50 J 3 < 5 < 5 D 8700 < 5 < 5 < 5 5

07/14/02 TB 17426 J 7 22 < 5 8 < 5 63 < 5 < 5 11 < 5 < 50 J 3 < 5 < 5 D 11000 < 5 9 < 5 56

08/09/02 TB 17657 J 8 24 < 5 9 < 5 69 < 5 J 3 18 < 5 < 50 < 5 < 5 < 5 D 6900 < 5 22 < 5 22708/27/02 TB 17788 23 22 < 5 11 < 5 64 < 5 J 3 11 < 5 < 50 J 1 < 5 < 5 D 7400 < 5 22 < 5 32909/19/02 TB 17965 < 10 30 < 5 16 < 5 68 < 5 J 4 7 < 5 < 50 J 3 < 5 < 5 D 6300 < 5 20 J 1 36309/30/02 TB 18002 45 28 < 5 14 < 5 61 < 5 J 4 6 < 5 < 50 J 3 < 5 < 5 D 8400 < 5 16 < 5 42810/29/02 TB 18107 38 25 < 5 11 < 5 64 < 5 < 5 5 < 5 < 50 J 3 < 5 < 5 D 7700 < 5 10 < 5 10011/26/02 TB 18325 10 24 < 5 12 < 5 59 < 5 < 5 J 5 < 5 < 50 J 3 < 5 < 5 D 21000 < 5 6 < 5 5912/07/02 TB 18342 23 27 < 5 13 < 5 64 < 5 < 5 J 5 < 5 < 50 J 2 < 5 < 5 D 14000 < 5 6 < 5 62

01/03/03 TB 18409 J 8 25 < 5 11 < 5 59 < 5 < 5 J 4 < 5 < 50 < 5 < 5 < 5 D 7600 < 5 J 5 J 1 4803/10/03 TB 18946 20 19 < 5 7 < 5 38 < 5 < 5 J 4 < 5 < 50 J 2 < 5 < 5 D 6900 < 5 J 3 < 5 3204/10/03 TB 19082 10 J 16 < 5 6 < 15 29 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 7520 < 5 < 5 < 2 2605/08/03 TB 19212 30 < 5 < 5 < 5 < 15 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 6610 < 5 < 5 < 2 < 506/11/03 TB 19365 5 16 < 5 5 < 15 19 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 3150 < 5 < 5 < 2 1707/16/03 TB 19495 13 13 < 5 6 < 15 24 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 3660 < 5 < 5 < 2 2508/15/03 TB 19635 19 13 < 5 6 < 15 28 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 8520 < 5 < 5 < 2 1709/11/03 TB 19792 9 13 < 5 5 < 15 29 < 5 < 5 5 < 5 < 20 < 4 < 5 < 5 9520 < 5 < 5 < 2 2710/07/03 TB 19871 19 15 < 5 6 < 15 44 < 5 < 5 9 < 5 < 20 < 4 < 5 < 5 7500 < 5 9 < 2 8111/11/03 TB 19973 13 13 < 5 6 < 15 39 < 5 < 5 7 < 5 < 20 < 4 < 5 < 5 7870 < 5 6 < 2 51

12/04/03 TB 20131 20 16 < 5 6 < 15 43 < 5 < 5 7 < 5 < 20 J 4 < 5 < 5 11600 < 5 6 < 2 46

02/04/04 TB 20258 28 11 < 5 < 5 < 15 35 < 5 < 5 5 < 5 < 20 < 4 < 5 < 5 7800 < 5 < 5 < 2 30

08/19/04 TB 20918 < 5 8 < 5 5 < 15 30 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 7600 < 5 < 5 < 2 16

02/14/05 TB 22009 5 5 < 5 < 5 41 32 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 7570 < 5 < 5 < 2 1505/04/05 TB 22425 5 < 5 < 5 < 5 < 15 14 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 8470 < 5 < 5 < 2 9

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 214 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

KW-005JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: MW-10 South

01/28/97 TB 01073 < 10 < 5 < 5 < 5 < 10 7 < 5 < 5 8 < 10 < 5 7500 < 5 < 5 < 10 < 502/16/97 TB 01707 < 5 < 5 < 5 < 10 < 5 < 5 < 5 < 5 < 10 < 5 E 3600 < 5 < 5 < 10 < 503/16/97 TB 01857 < 500 < 500 < 500 < 1000 13000 < 500 J 230 < 500 < 1000 < 500 E 210000 < 500 1600 < 1000 83004/07/97 TB 01992 < 5 < 5 < 5 < 10 J 4 < 5 < 5 < 5 < 10 < 5 E 1700 < 5 < 5 < 10 < 505/06/97 TB 02105 < 10 < 5 < 5 < 5 < 10 J 2 < 5 < 5 < 5 < 10 < 5 E 800 < 5 < 5 < 10 < 506/08/97 TB 02264 < 10 < 5 < 5 < 5 < 10 J 3 < 5 < 5 J 3 < 10 < 5 860 < 5 < 5 < 10 < 506/30/97 TB 02401 < 5 < 5 < 5 < 10 34 < 5 < 5 < 5 < 10 < 5 E 1000 < 5 < 5 < 10 < 509/03/97 TB 02735 < 500 < 500 < 500 < 1000 13000 < 500 < 500 < 500 < 1000 < 500 < 5000 < 500 3400 < 1000 J 29010/06/97 TB 02968 < 1000 < 1000 < 1000 < 2000 17000 < 1000 < 1000 < 1000 < 2000 < 1000 32000 < 1000 4000 < 2000 < 100011/05/97 TB 03205 < 1000 < 1000 < 1000 3700 25000 < 1000 < 1000 < 1000 < 2000 < 1000 < 1000 7500 < 2000 J 730

12/02/97 TB 03406 < 1200 < 1200 < 1200 2600 39000 < 1200 J 540 < 1200 < 2500 < 1200 E 120000 < 1200 10000 < 2500 J 870

12/02/97 TB 03407 < 2500 < 2500 < 2500 < 5000 46000 < 2500 < 2500 < 2500 < 5000 < 2500 E 160000 < 2500 11000 < 5000 < 250012/03/97 TB 03410 < 2500 < 2500 < 2500 < 5000 43000 < 2500 < 2500 < 2500 < 5000 < 2500 E 140000 < 2500 10000 < 5000 < 250012/03/97 TB 03409 < 2500 < 2500 J 1000 < 5000 43000 < 2500 2600 < 2500 < 5000 < 2500 J 18000 < 2500 10000 < 5000 < 250012/03/97 TB 03408 < 2500 < 2500 < 2500 < 5000 43000 < 2500 < 2500 < 2500 < 5000 < 2500 E 150000 < 2500 10000 < 5000 < 250012/04/97 TB 03411 < 2500 < 2500 < 2500 < 5000 41500 < 2500 J 1000 < 2500 < 5000 < 2500 E 190000 < 2500 11500 < 5000 < 2500

02/01/98 TB 03729 < 500 < 500 < 500 < 2000 8200 < 500 < 1000 < 500 < 1000 < 1000 < 500 < 1000 < 500 2400 < 1500 J 23003/09/98 TB 03956 < 100 < 100 < 100 < 200 3700 < 100 J 58 < 100 < 200 < 100 1800 < 100 1700 < 200 22005/08/98 TB 04502 < 50 < 50 < 50 < 50 J 62 1400 < 50 < 50 < 50 < 100 < 50 980 < 50 390 < 100 J 4307/13/98 TB 05029 < 50 < 25 < 25 < 25 < 100 < 25 < 25 < 25 < 50 < 25 < 50 < 50 < 25 < 50 830 < 25 < 50 < 75 < 2508/06/98 TB 05376 < 10 J 3 < 5 J 5 < 20 280 < 5 J 2 J 3 < 5 < 10 < 10 < 5 < 10 740 < 5 170 J 3 4611/07/98 TB 06465 < 500 < 25 < 25 < 25 < 100 310 < 25 < 25 J 12 < 25 < 50 < 50 < 25 < 50 5100 < 25 510 < 75 J 8912/01/98 TB 06803 < 200 < 10 < 10 J 8 < 40 D 420 < 10 < 10 J 13 < 10 < 20 < 20 < 10 < 20 480 < 10 D 720 < 30 150

01/05/99 TB 07152 < 100 J 4 < 5 < 5 < 20 19 < 5 < 5 J 2 < 5 < 10 < 10 < 5 < 10 440 < 5 J 2 < 15 J 202/08/99 TB 07424 < 100 J 3 < 5 J 4 < 20 120 < 5 J 1 J 1 < 5 < 10 < 10 < 5 < 10 570 < 5 34 < 15 2905/13/99 TB 08277 < 100 < 5 < 5 < 5 < 20 J 1 < 5 < 5 < 10 < 5 < 10 < 10 < 5 < 10 2200 < 5 < 10 < 1508/16/99 TB 09291 < 10 6 < 5 < 5 < 5 87 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 2100 < 5 < 5 < 5 < 511/05/99 TB 10366 < 10 5 < 5 9 < 5 25 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 2700 < 5 < 5 < 5 < 5

05/19/00 TB 11796 19 32 < 5 10 < 5 D 6200 < 5 < 5 5 < 5 < 50 16 < 5 < 5 D 70000 < 5 83 24 7106/07/00 TB 11933 < 2000 < 80 < 80 < 80 < 80 D 4700 < 80 < 80 < 80 < 80 < 800 < 80 < 80 < 80 D 59000 < 80 < 80 < 80 < 8010/20/00 TB 12881 < 15 25 < 5 < 5 < 5 59 < 5 < 5 < 5 < 5 < 55 < 5 < 5 < 5 D 32005 < 5 < 5 21 < 5

02/22/01 TB 13853 < 10 26 < 5 5 < 5 J 4 < 5 J 4 < 5 < 5 < 50 < 5 < 5 < 5 D 23000 < 5 < 5 22 J 2

05/04/01 TB 14322 80 32 < 5 7 < 5 < 5 < 5 5 < 5 < 5 < 50 J 5 < 5 < 5 D 31000 < 5 < 5 23 < 508/15/01 TB 14972 < 10 27 < 5 7 < 5 7 < 5 J 5 < 5 < 5 < 50 < 5 < 5 < 5 < 4000 < 5 < 5 15 < 511/01/01 TB 15459 < 10 25 < 5 5 < 5 J 3 < 5 J 4 < 5 < 5 < 50 < 5 < 5 < 5 D 2200 < 5 < 5 24 < 5

03/11/02 TB 16689 < 10 23 < 5 J 2 < 5 J 4 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 D 9200 < 5 < 5 16 < 5

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 215 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

KW-005JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: MW-10 South

05/21/02 TB 17077 < 10 35 < 5 J 3 < 5 J 3 < 5 < 5 < 5 < 5 < 50 J 3 < 5 < 5 D 16000 < 5 < 5 13 < 508/27/02 TB 17789 < 10 37 < 5 J 3 < 5 8 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 D 11000 < 5 < 5 10 J 2

03/06/03 TB 18928 < 10 90 < 5 J 4 J 4 J 3 < 5 < 5 < 5 < 5 < 50 J 3 < 5 J 2 < 35000 < 5 < 5 14 < 505/09/03 TB 19220 < 5 113 < 5 6 < 15 19 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 44800 < 5 < 5 J 9 < 508/15/03 TB 19643 7 84 < 5 < 5 < 15 60 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 37800 < 5 < 5 J 6 J 311/11/03 TB 19957 11 103 < 5 5 < 15 23 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 28500 < 5 < 5 J 5 J 3

02/04/04 TB 20276 < 5 102 < 5 < 5 < 15 7 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 39500 < 5 < 5 < 2 < 508/24/04 TB 20947 < 5 41 < 5 < 5 < 15 18 < 5 < 5 < 5 < 5 < 20 J 6 < 5 < 5 74900 < 5 < 5 < 2 < 510/21/04 TB 21366 < 5 26 < 5 < 5 < 15 17 < 5 < 5 < 5 < 5 < 20 J 4 < 5 < 5 62300 < 5 < 5 < 2 < 5

11/17/04 TB 21453 188 8 < 5 < 5 < 15 1860 < 5 < 5 105 < 5 < 20 < 4 < 5 < 5 208000 < 5 257 < 2 65

12/08/04 TB 21591 112 < 80 < 80 < 80 < 240 5260 < 80 < 80 149 < 80 < 320 < 64 < 80 < 80 34000 < 80 905 < 32 J 72

01/10/05 TB 21746 62 < 40 < 40 < 40 < 120 1990 < 40 < 40 48 < 40 < 160 < 32 < 40 < 40 32400 < 40 87 < 16 J 23

02/15/05 TB 22052 52 < 40 < 40 < 40 < 120 4500 < 40 < 40 58 < 40 < 160 < 32 < 40 < 40 69100 < 40 430 < 16 J 26

03/08/05 TB 22243 < 50 < 50 < 50 < 50 < 150 1970 < 50 < 50 < 50 < 50 < 200 < 40 < 50 < 50 84100 < 50 152 < 20 < 5004/08/05 TB 22304 < 10 19 < 10 < 10 < 30 433 < 10 < 10 < 10 < 10 < 40 J 8 < 10 < 10 86600 < 10 < 10 < 4 < 10

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 216 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

KW-008JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: MW-10 South

03/12/02 TB 16697 < 10 30 < 5 51 < 5 < 5 < 5 42 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 5

02/19/03 TB 18731 < 10 17 < 5 22 < 5 < 5 < 5 16 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 508/15/03 TB 19631 < 5 51 < 5 35 < 15 < 5 < 5 64 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 J 2 < 5

02/18/04 TB 20400 < 5 9 < 5 11 < 15 < 5 < 5 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 508/24/04 TB 20951 < 5 18 < 5 16 < 15 14 < 5 9 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 J 2 < 510/21/04 TB 21367 < 5 40 < 5 41 < 15 8 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 92 < 5 < 5 10 1711/17/04 TB 21454 < 5 35 < 5 29 < 15 < 5 < 5 62 < 5 < 5 < 20 < 4 < 5 < 5 212 < 5 < 5 < 2 < 512/08/04 TB 21592 < 5 9 < 5 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 208 < 5 < 5 < 2 12

01/10/05 TB 21747 < 5 18 < 5 17 < 15 < 5 < 5 15 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

02/14/05 TB 22013 < 5 8 < 5 6 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 504/08/05 TB 22305 < 5 21 < 5 25 < 15 < 5 < 5 17 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 217 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

KW-009JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: MW-10 South

03/12/02 TB 16698 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 5

02/19/03 TB 18732 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 5

08/24/04 TB 20952 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 103 < 5 < 5 < 2 < 510/21/04 TB 21368 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 511/17/04 TB 21455 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 512/08/04 TB 21593 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

01/10/05 TB 21748 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 502/14/05 TB 22014 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 505/04/05 TB 22428 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 218 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

KW-010JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: MW-10 South

03/12/02 TB 16699 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 5

02/19/03 TB 18733 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 5

08/24/04 TB 20953 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 510/21/04 TB 21369 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 511/17/04 TB 21456 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 512/08/04 TB 21594 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

01/10/05 TB 21749 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 153 < 5 < 5 < 2 < 502/14/05 TB 22015 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 504/08/05 TB 22307 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 219 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

KW-012JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: MW-10 South

03/12/02 TB 16701 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 5

03/11/03 TB 18958 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 5

02/04/04 TB 20271 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 508/24/04 TB 20955 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 510/21/04 TB 21370 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 511/17/04 TB 21457 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 512/08/04 TB 21595 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

01/10/05 TB 21750 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 502/14/05 TB 22017 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

05/04/05 TB 22430 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 220 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

KW-013JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: MW-10 South

03/12/02 TB 16702 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 5

03/06/03 TB 18929 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 5

02/18/04 TB 20401 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 508/24/04 TB 20956 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 510/21/04 TB 21371 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 511/17/04 TB 21458 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 173 < 5 < 5 < 2 < 512/08/04 TB 21596 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 266 < 5 < 5 < 2 < 5

01/10/05 TB 21751 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 96 < 5 < 5 < 2 < 502/15/05 TB 22053 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 51 < 5 < 5 < 2 < 5

04/08/05 TB 22309 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 221 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

KW-016JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: MW-10 South

02/22/97 TB 01756 < 250 < 250 < 250 < 500 4300 < 250 580 < 250 < 500 < 250 E 78000 < 250 640 < 500 120003/16/97 TB 01856 < 250 < 250 < 250 1400 5700 < 250 380 < 250 1700 < 250 E 120000 < 250 770 < 500 100004/07/97 TB 01991 < 250 < 250 < 250 740 4400 < 250 J 230 < 250 J 430 < 250 E 88000 < 250 670 < 500 100006/08/97 TB 02266 80 < 250 < 250 < 250 < 500 5100 < 250 J 190 < 250 < 500 < 250 E 63000 < 250 350 < 500 26009/03/97 TB 02736 < 50 < 50 < 50 < 100 1700 < 50 130 < 50 < 100 < 50 E 90000 < 50 250 < 100 37011/30/97 TB 03376 l 12 < 25 140 < 100 700 31 230 J 35 < 25 < 50 < 50 < 25 < 50 < 25 110 < 75 135

02/01/98 TB 03732 < 250 < 250 550 J 170 1100 600 < 500 < 250 J 150 < 500 < 250 < 500 < 250 J 170 < 750 J 17005/08/98 TB 04503 64 < 50 < 50 850 B 230 390 1000 < 50 < 50 < 100 < 50 E 40000 < 50 79 < 100 13008/06/98 TB 05379 3500 45 < 25 1200 100 580 160 1300 J 10 45 < 50 < 50 < 25 J 20 120000 < 25 50 J 20 14011/08/98 TB 06466 < 1000 < 50 < 50 430 < 200 120 < 50 390 < 100 < 50 < 100 < 100 < 50 < 100 24000 < 50 < 100 < 150 < 50

02/08/99 TB 07427 110 14 < 5 D 510 < 20 180 46 D 490 J 5 11 < 10 < 10 J 4 J 5 D 20000 < 5 J 4 J 4 36

05/13/99 TB 08281 < 500 J 12 < 25 520 < 100 55 J 22 360 < 50 < 25 < 50 < 50 < 25 < 50 D 33000 < 25 < 50 < 7508/16/99 TB 09294 < 10 10 < 5 D 270 < 5 34 22 D 210 < 5 < 5 < 50 < 5 < 5 < 5 D 24000 < 5 < 5 < 5 < 511/05/99 TB 10367 10 10 < 5 220 < 5 31 27 330 < 5 10 < 50 < 5 < 5 < 5 11300 < 5 < 5 < 5 < 5

05/19/00 TB 11797 23 < 5 < 5 23 < 5 7 5 14 < 5 < 5 < 50 < 5 < 5 < 5 D 2600 < 5 < 5 < 5 < 510/20/00 TB 12882 < 15 < 5 < 5 < 5 < 5 J 5 < 5 < 5 < 5 < 5 < 55 < 5 < 5 < 5 D 3105 < 5 < 5 < 5 < 5

02/22/01 TB 13856 < 10 < 5 < 5 14 < 5 J 4 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 D 3400 < 5 < 5 < 5 < 505/04/01 TB 14325 < 10 < 5 < 5 10 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 D 1200 < 5 < 5 < 5 < 508/20/01 TB 15032 < 10 < 5 < 5 9 < 5 J 2 J 2 < 5 < 5 < 5 < 50 < 5 < 5 < 5 2700 < 5 < 5 < 5 < 511/01/01 TB 15462 40 < 5 < 5 17 < 5 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 D 2100 < 5 < 5 < 5 < 512/21/01 TB 16007 < 10 < 5 < 5 12 < 5 J 2 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 2000 < 5 < 5 < 5 < 5

01/03/02 TB 16090 < 10 J 4 < 5 19 < 5 8 J 4 < 5 < 5 < 5 < 50 < 5 < 5 < 5 D 6400 < 5 < 5 < 5 < 501/25/02 TB 16255 < 10 < 5 < 5 10 < 5 J 4 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 2400 < 5 < 5 < 5 < 503/09/02 TB 16675 < 10 J 5 < 5 15 < 5 J 1 J 3 < 5 < 5 < 5 < 50 < 5 < 5 < 5 D 1900 < 5 < 5 < 5 < 503/28/02 TB 16751 < 10 9 < 5 41 < 5 < 5 5 14 < 5 < 5 < 50 < 5 < 5 < 5 D 4200 < 5 < 5 < 5 < 504/30/02 TB 16888 < 10 9 < 5 36 < 5 < 5 5 11 < 5 < 5 < 50 < 5 < 5 < 5 D 2200 < 5 < 5 < 5 < 505/21/02 TB 17080 < 10 9 < 5 33 < 5 J 1 J 5 14 < 5 < 5 < 50 < 5 J 1 < 5 2300 J 2 < 5 < 5 < 506/10/02 TB 17282 < 10 8 < 5 33 < 5 < 5 J 3 20 < 5 < 5 < 50 < 5 < 5 < 5 1900 < 5 < 5 < 5 < 507/14/02 TB 17427 < 10 8 < 5 34 < 5 J 2 J 3 40 < 5 < 5 < 50 < 5 J 1 < 5 D 2900 J 1 < 5 < 5 < 508/09/02 TB 17658 12 5 < 5 21 < 5 J 3 J 2 19 < 5 < 5 < 50 < 5 < 5 < 5 1100 < 5 < 5 < 5 < 5

08/27/02 TB 17790 J 8 J 5 < 5 21 < 5 9 J 2 15 < 5 < 5 < 50 < 5 < 5 < 5 2400 < 5 < 5 < 5 < 509/19/02 TB 17966 < 10 6 < 5 19 < 5 10 J 3 14 < 5 < 5 < 50 < 5 < 5 < 5 1400 < 5 < 5 < 5 < 509/30/02 TB 18003 83 J 5 < 5 14 < 5 J 3 J 2 10 < 5 < 5 < 50 < 5 < 5 < 5 2000 < 5 < 5 < 5 < 510/29/02 TB 18108 J 3 J 4 < 5 10 < 5 J 3 < 5 8 < 5 < 5 < 50 < 5 < 5 < 5 1900 < 5 < 5 < 5 < 511/26/02 TB 18326 13 J 5 < 5 14 < 5 9 J 2 7 < 5 < 5 < 50 < 5 < 5 < 5 D 3400 < 5 < 5 < 5 < 512/07/02 TB 18343 210 J 5 < 5 14 < 5 10 J 2 6 < 5 < 5 < 50 < 5 < 5 < 5 D 2450 < 5 < 5 < 5 < 5

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 222 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

KW-016JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: MW-10 South

01/02/03 TB 18402 < 10 J 4 < 5 12 < 5 10 J 2 J 3 < 5 < 5 < 50 < 5 < 5 < 5 1900 < 5 < 5 < 5 < 503/10/03 TB 18947 < 10 6 < 5 27 < 5 < 5 J 3 77 < 5 < 5 < 50 < 5 J 1 < 5 290 < 5 < 5 < 5 < 504/10/03 TB 19083 < 5 5 < 5 22 < 15 < 5 < 5 70 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 505/08/03 TB 19213 < 5 6 < 5 27 < 15 < 5 < 5 89 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 506/11/03 TB 19366 < 5 5 < 5 17 < 15 8 < 5 87 < 5 < 5 < 20 < 4 < 5 < 5 128 < 5 < 5 < 2 < 507/16/03 TB 19496 37 < 5 < 5 19 < 15 20 < 5 67 < 5 < 5 < 20 < 4 < 5 < 5 552 < 5 < 5 < 2 < 508/15/03 TB 19636 43 5 < 5 23 < 15 29 < 5 71 < 5 < 5 < 20 < 4 < 5 < 5 1860 < 5 < 5 < 2 < 509/11/03 TB 19793 30 < 5 < 5 16 < 15 37 < 5 40 < 5 < 5 < 20 < 4 < 5 < 5 3000 < 5 < 5 < 2 < 510/07/03 TB 19872 21 < 5 < 5 14 < 15 32 < 5 29 < 5 < 5 < 20 < 4 < 5 < 5 2930 < 5 < 5 < 2 < 511/11/03 TB 19958 15 < 5 < 5 11 < 15 25 < 5 19 < 5 < 5 < 20 < 4 < 5 < 5 4750 < 5 < 5 < 2 < 5

12/04/03 TB 20132 13 < 5 < 5 10 < 15 27 < 5 15 < 5 < 5 < 20 < 4 < 5 < 5 6710 < 5 < 5 < 2 < 5

02/04/04 TB 20277 17 < 5 < 5 8 < 15 22 < 5 12 < 5 < 5 < 20 < 4 < 5 < 5 5910 < 5 < 5 < 2 < 508/19/04 TB 20919 < 5 < 5 < 5 < 5 < 15 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 6780 < 5 < 5 < 2 < 5

02/11/05 TB 21988 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 3560 < 5 < 5 < 2 < 505/04/05 TB 22432 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 1080 < 5 < 5 < 2 < 5

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 223 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

KW-017JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: MW-10 South

04/17/98 TB 04340 < 50 < 50 < 50 < 50 B 1100 < 50 < 50 < 50 < 50 140 < 50 E 23000 < 50 < 50 < 100 < 5006/03/98 TB 04690 70 < 5 160 J 350 D 2000 28 D 260 140 12 44 J 3 < 5 J 6 E 71000 < 5 D 300 19 140007/13/98 TB 05030 J 78 25 < 25 69 J 60 620 J 12 98 J 15 < 25 < 50 < 50 < 25 < 50 E 120000 < 25 55 J 14 45008/06/98 TB 05380 150 30 < 25 50 140 780 J 10 80 J 25 < 25 < 50 < 50 < 25 < 50 52000 < 25 85 J 5 100010/12/98 TB 06133 < 500 J 10 < 25 < 25 < 100 80 < 25 J 13 < 50 < 25 < 50 < 50 < 25 < 50 8400 < 25 J 9 < 75 15011/09/98 TB 06496 < 500 J 17 < 25 J 11 < 100 200 < 25 J 11 < 50 < 25 < 50 < 50 < 25 < 50 21000 < 25 J 17 < 75 21012/04/98 TB 06866 J 3 26 < 5 7 < 20 210 < 5 5 J 3 < 5 < 10 < 10 < 5 < 10 19000 < 5 22 J 15 60

01/05/99 TB 07155 < 100 29 < 5 38 49 D 270 J 4 61 J 2 < 5 < 10 < 10 < 5 < 10 30000 < 5 12 J 4 23002/08/99 TB 07428 < 200 53 < 10 44 70 D 620 < 10 59 J 8 < 10 < 20 < 20 < 10 < 20 D 22000 < 10 89 J 26 18005/14/99 TB 08289 < 500 39 < 25 < 25 < 100 230 < 25 35 < 50 < 25 < 50 < 50 < 25 < 50 46000 < 25 J 9 < 75 25

08/16/99 TB 09295 40 52 < 10 82 < 10 D 580 J 6 63 < 10 < 10 < 100 < 10 < 10 < 10 D 27000 < 10 30 < 10 83

11/05/99 TB 10368 46 26 < 10 28 < 10 310 < 10 46 < 10 < 10 < 100 < 10 < 10 < 10 11000 < 10 < 10 < 10 18

04/07/00 TB 11520 < 10 36 < 5 J 4 < 5 D 330 < 5 < 5 8 < 5 < 50 11 < 5 < 5 D 170000 < 5 20 < 5 110

05/18/00 TB 11787 < 20 28 < 10 < 10 < 10 310 < 10 < 10 < 10 < 10 < 100 < 10 < 10 < 10 D 129000 < 10 10 < 10 3610/20/00 TB 12883 < 25 < 15 < 15 < 15 < 15 D 345 < 15 < 15 11 < 15 < 105 < 15 < 15 < 15 D 150005 < 15 J 8 < 15 22

02/22/01 TB 13857 12 < 5 < 5 < 5 6 100 < 5 < 5 6 < 5 < 50 < 5 < 5 < 5 D 75000 < 5 < 5 < 5 < 505/04/01 TB 14326 < 20 < 10 < 10 < 10 < 10 160 < 10 < 10 < 10 < 10 < 100 20 < 10 < 10 D 130000 < 10 < 10 < 10 J 408/20/01 TB 15033 < 1250 < 625 < 625 < 625 < 625 < 625 < 625 < 625 < 625 < 625 < 6250 < 625 < 625 < 625 190000 < 625 < 625 < 625 < 62511/01/01 TB 15463 13 6 < 5 < 5 < 5 120 < 5 < 5 7 < 5 < 50 11 < 5 < 5 D 170000 < 5 < 5 < 5 6

03/10/02 TB 16677 < 10 10 < 5 < 5 < 5 110 < 5 < 5 77 < 5 < 50 11 < 5 < 5 D 200000 < 5 J 5 < 5 1005/21/02 TB 17081 14 7 < 5 < 5 < 5 98 < 5 < 5 40 < 5 < 50 15 < 5 < 5 D 280000 < 5 J 4 < 5 1708/27/02 TB 17791 24 5 < 5 < 5 < 5 130 < 5 < 5 66 < 5 J 6 10 < 5 < 5 D 240000 < 5 9 < 5 62

03/06/03 TB 18930 21 J 4 < 5 < 5 12 140 < 5 < 5 87 < 5 < 50 9 < 5 < 5 D 240000 < 5 13 < 5 7105/09/03 TB 19221 41 < 5 < 5 < 5 < 15 141 < 5 < 5 91 < 5 < 20 10 < 5 < 5 215000 < 5 14 < 2 9408/15/03 TB 19644 27 < 5 < 5 < 5 < 15 153 < 5 < 5 116 < 5 < 20 13 < 5 < 5 328000 < 5 18 < 2 16211/11/03 TB 19959 32 < 5 < 5 < 5 < 15 220 < 5 < 5 183 < 5 < 20 J 9 < 5 < 5 236000 < 5 38 < 2 221

02/04/04 TB 20273 32 < 5 < 5 < 5 J 22 195 < 5 < 5 150 < 5 < 20 10 < 5 < 5 264000 < 5 36 < 2 23608/24/04 TB 20959 44 < 5 < 5 < 5 J 17 227 < 5 < 5 209 < 5 < 20 J 9 < 5 < 5 268000 < 5 50 < 2 40510/21/04 TB 21372 40 < 10 < 10 < 10 < 30 228 < 10 < 10 186 < 10 < 40 J 11 < 10 < 10 390000 < 10 49 < 4 442

11/18/04 TB 21459 38 < 10 < 10 < 10 < 30 236 < 10 < 10 180 < 10 < 40 J 12 < 10 < 10 522000 < 10 47 < 4 423

12/08/04 TB 21597 35 < 10 < 10 < 10 < 30 220 < 10 < 10 189 < 10 < 40 J 8 < 10 < 10 389000 < 10 41 < 4 436

01/10/05 TB 21752 32 < 5 < 5 < 5 < 15 227 < 5 < 5 176 < 5 < 20 J 8 < 5 < 5 242000 < 5 38 < 2 393

02/14/05 TB 22019 25 < 10 < 10 < 10 J 55 204 < 10 < 10 149 < 10 < 40 J 8 < 10 < 10 308000 < 10 37 < 4 312

04/08/05 TB 22310 17 < 5 < 5 < 5 < 15 136 < 5 < 5 103 < 5 < 20 14 < 5 < 5 372000 < 5 19 < 2 134

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 224 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

KW-019JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: MW-10 South

05/08/98 TB 04504 < 5 < 5 < 5 < 5 < 10 < 5 < 5 < 5 < 5 < 10 < 5 550 < 5 < 5 < 10 < 5

12/21/01 TB 16008 < 10 < 5 < 5 < 5 20 67 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 D 140000 < 5 J 3 15 8

01/03/02 TB 16091 < 10 < 5 < 5 < 5 16 104 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 D 140000 < 5 < 5 11 701/25/02 TB 16256 J 8 J 3 < 5 < 5 < 5 100 < 5 < 5 < 5 < 5 < 50 5 < 5 < 5 D 140000 < 5 J 2 14 803/10/02 TB 16679 14 J 4 < 5 < 5 13 56 < 5 < 5 < 5 < 5 < 50 J 5 < 5 < 5 D 130000 < 5 J 3 20 603/28/02 TB 16752 J 6 J 4 < 5 J 3 < 5 51 < 5 < 5 < 5 < 5 < 50 6 < 5 < 5 D 150000 < 5 J 2 20 804/30/02 TB 16889 J 5 J 3 < 5 < 5 < 5 48 < 5 < 5 < 5 < 5 < 50 5 < 5 < 5 D 110000 < 5 J 3 30 806/10/02 TB 17283 < 10 < 5 < 5 < 5 < 5 38 < 5 < 5 < 5 < 5 < 50 J 5 < 5 < 5 D 110000 < 5 J 2 22 607/14/02 TB 17428 J 9 < 5 < 5 < 5 < 5 53 < 5 < 5 J 2 < 5 < 50 J 5 < 5 < 5 D 120000 < 5 J 2 16 8

08/09/02 TB 17659 J 5 < 5 < 5 < 5 < 5 71 < 5 < 5 J 2 < 5 < 50 J 4 < 5 < 5 D 61000 < 5 J 2 17 9

09/19/02 TB 17967 28 < 5 < 5 < 5 11 150 < 5 < 5 9 < 5 < 50 5 < 5 < 5 D 85000 < 5 J 4 13 16

09/30/02 TB 18004 67 J 1 < 5 < 5 < 5 170 J 1 < 5 10 < 5 < 50 5 < 5 < 5 D 100000 < 5 J 4 7 17

10/29/02 TB 18109 63 J 1 < 5 J 3 < 5 150 < 5 < 5 11 < 5 < 50 J 5 < 5 < 5 D 95000 < 5 J 4 7 19

11/26/02 TB 18327 18 < 5 < 5 < 5 < 5 180 < 5 < 5 13 < 5 < 50 J 4 < 5 < 5 D 245000 < 5 J 4 9 2012/07/02 TB 18344 26 < 5 < 5 J 2 17 170 < 5 < 5 11 < 5 < 50 < 5 < 5 < 5 D 215000 < 5 J 4 9 17

01/03/03 TB 18410 24 J 1 < 5 < 5 15 D 200 < 5 < 5 19 < 5 < 50 J 4 < 5 < 5 D 66000 < 5 6 10 2403/10/03 TB 18948 120 < 5 < 5 < 5 11 190 < 5 < 5 36 < 5 < 50 J 4 < 5 < 5 D 79000 < 5 10 < 5 4704/10/03 TB 19084 80 < 5 < 5 < 5 < 15 159 < 5 < 5 J 43 < 5 < 20 < 4 < 5 < 5 83400 < 5 9 J 5 5505/08/03 TB 19214 86 < 5 < 5 < 5 < 15 184 < 5 < 5 49 < 5 < 20 < 4 < 5 < 5 58300 < 5 9 12 7206/11/03 TB 19367 64 < 5 < 5 < 5 < 15 118 < 5 < 5 37 < 5 < 20 < 4 < 5 < 5 49600 < 5 6 16 5507/16/03 TB 19497 67 < 5 < 5 < 5 < 15 53 < 5 < 5 22 < 5 < 20 J 4 < 5 < 5 50200 < 5 < 5 < 2 3708/15/03 TB 19637 59 < 5 < 5 < 5 < 15 41 < 5 < 5 17 < 5 < 20 J 4 < 5 < 5 75200 < 5 < 5 11 2909/11/03 TB 19794 30 < 5 < 5 < 5 < 15 55 < 5 < 5 10 < 5 < 20 < 4 < 5 < 5 127000 < 5 < 5 < 2 1910/07/03 TB 19873 57 < 5 < 5 < 5 < 15 28 < 5 < 5 10 < 5 < 20 J 5 < 5 < 5 79600 < 5 < 5 < 2 1711/11/03 TB 19960 31 < 5 < 5 < 5 < 15 17 < 5 < 5 7 < 5 < 20 J 5 < 5 < 5 89800 < 5 < 5 J 4 1412/04/03 TB 20133 24 < 5 < 5 < 5 J 20 19 < 5 < 5 < 5 < 5 < 20 J 5 < 5 < 5 104000 < 5 < 5 J 7 10

02/18/04 TB 20402 32 < 5 < 5 < 5 < 15 88 < 5 < 5 11 < 5 < 20 J 6 < 5 < 5 55500 < 5 < 5 J 6 1808/19/04 TB 20921 56 < 5 < 5 < 5 J 30 155 < 5 < 5 16 < 5 < 20 J 7 < 5 < 5 154000 < 5 7 28 27

02/14/05 TB 22021 65 < 5 < 5 < 5 J 30 99 < 5 < 5 21 < 5 < 20 < 4 < 5 < 5 57900 < 5 < 5 < 2 2505/04/05 TB 22434 59 < 5 < 5 < 5 < 15 23 < 5 < 5 7 < 5 < 20 < 4 < 5 < 5 100000 < 5 < 5 < 2 12

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 225 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

KW-021JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: MW-10 South

05/08/98 TB 04506 < 125 J 110 < 125 < 125 J 240 3400 < 125 < 125 300 < 250 < 125 2100 < 125 750 < 250 150

03/10/02 TB 16680 < 5000 2700 < 2500 < 2500 42000 100000 < 2500 < 2500 2500 J 1200 J 18000 < 2500 < 2500 < 2500 D 1400000 < 2500 16000 J 880 J 3000

02/19/03 TB 18735 6900 J 630 < 1000 1000 8000 35000 < 1000 < 1000 J 690 < 1000 J 5500 < 1000 < 1000 < 1000 D 640000 < 1000 5300 < 1000 J 140004/10/03 TB 19085 J 1200 < 1000 < 1000 < 1000 5000 33000 < 1000 < 1000 < 1000 < 1000 J 4000 < 800 < 1000 < 1000 592000 < 1000 5000 < 400 < 100005/08/03 TB 19215 < 800 < 800 < 800 < 800 < 2400 33600 < 800 < 800 < 800 < 800 < 3200 < 640 < 800 < 800 233000 < 800 5120 < 320 < 80006/11/03 TB 19368 1340 < 500 < 500 < 500 < 1500 19000 < 500 < 500 600 < 500 < 2000 < 400 < 500 < 500 149000 < 500 4600 < 200 120007/16/03 TB 19498 750 < 250 < 250 < 250 < 750 10500 < 250 < 250 250 < 250 < 1000 < 200 < 250 < 250 85200 < 250 1400 < 100 45008/15/03 TB 19638 480 < 400 < 400 < 400 < 1200 13200 < 400 < 400 < 400 < 400 < 1600 < 320 < 400 < 400 230000 < 400 1200 < 160 J 20009/11/03 TB 19795 400 < 200 < 200 < 200 < 600 9000 < 200 < 200 200 < 200 < 800 < 160 < 200 < 200 102000 < 200 520 < 80 360

10/07/03 TB 19874 400 < 400 < 400 < 400 < 1200 14000 < 400 < 400 < 400 < 400 < 1600 < 320 < 400 < 400 179000 < 400 1280 < 160 J 240

11/11/03 TB 19974 1250 < 625 < 625 < 625 J 3130 28500 < 625 < 625 < 625 < 625 < 2500 < 500 < 625 < 625 439000 < 625 3750 < 250 < 62512/04/03 TB 20134 448 < 160 < 160 < 160 < 480 8540 < 160 < 160 160 < 160 < 640 < 128 < 160 < 160 189000 < 160 1280 < 64 416

12/15/03 TB 20187 544 < 160 < 160 < 160 < 480 7010 < 160 < 160 160 < 160 < 640 < 128 < 160 < 160 361000 < 160 1020 < 64 448

02/18/04 TB 20404 954 325 < 160 173 2450 26700 < 160 < 160 347 < 160 1780 < 128 < 160 < 160 423000 < 160 4220 J 102 131208/19/04 TB 20923 < 625 < 625 < 625 < 625 < 1880 30800 < 625 < 625 < 625 < 625 < 2500 < 500 < 625 < 625 212000 < 625 3560 < 250 J 49410/21/04 TB 21373 < 625 < 625 < 625 < 625 < 1880 21500 < 625 < 625 < 625 < 625 < 2500 < 500 < 625 < 625 207000 < 625 1380 < 250 < 62511/18/04 TB 21460 < 625 < 625 < 625 < 625 < 1880 23300 < 625 < 625 < 625 < 625 < 2500 < 500 < 625 < 625 285000 < 625 1320 < 250 J 25012/08/04 TB 21598 < 625 < 625 < 625 < 625 < 1880 30000 < 625 < 625 < 625 < 625 < 2500 < 500 < 625 < 625 250000 < 625 2570 < 250 J 334

01/10/05 TB 21753 694 < 625 < 625 < 625 < 1880 26500 < 625 < 625 < 625 < 625 < 2500 < 500 < 625 < 625 459000 < 625 2340 < 250 J 45502/14/05 TB 22023 2330 < 625 < 625 < 625 < 1880 39600 < 625 < 625 1450 < 625 < 2500 < 500 < 625 < 625 697000 < 625 6640 < 250 289004/08/05 TB 22311 668 < 500 < 500 < 500 < 1500 24900 < 500 < 500 < 500 < 500 < 2000 < 400 < 500 < 500 636000 < 500 2000 < 200 920

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 226 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

KW-021RJUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: MW-10 South

01/16/00 TB 10936 < 10 14 < 5 15 < 5 47 < 5 25 < 5 8 < 50 < 5 < 5 < 5 D 5900 < 5 < 5 < 5 J 203/03/00 TB 11283 < 80 100 < 40 67 < 40 1400 < 40 < 40 < 40 < 40 < 400 < 40 < 40 < 40 D 31000 < 40 140 J 30 < 4005/03/00 TB 11624 540 250 < 50 < 50 790 D 11000 < 50 < 50 120 < 50 690 < 50 < 50 < 50 D 90000 < 50 1800 110 56006/07/00 TB 11934 < 2000 500 < 200 < 200 < 200 D 20000 < 200 < 200 310 < 200 J 1600 < 200 < 200 < 200 D 170000 < 200 4300 310 80007/04/00 TB 12095 840 470 < 200 < 200 < 200 D 16000 < 200 < 200 430 < 200 < 2000 < 200 < 200 < 200 D 170000 < 200 3700 300 88008/02/00 TB 12303 1500 < 500 < 500 < 500 < 500 13000 < 500 < 500 < 500 < 500 < 5000 < 500 < 500 < 500 74000 < 500 2700 < 500 < 50009/06/00 TB 12564 < 1000 580 < 500 < 500 < 500 14000 < 500 < 500 J 400 < 500 < 5000 < 500 < 500 < 500 150000 < 500 2900 < 500 J 80010/02/00 TB 12722 < 1000 570 < 500 < 500 < 500 14000 < 500 < 500 550 < 500 J 2100 < 500 < 500 < 500 330000 < 500 3000 < 500 120011/02/00 TB 13084 < 1000 570 < 500 < 500 < 500 13000 < 500 < 500 J 490 < 500 < 5000 < 500 < 500 < 500 220000 < 500 2400 < 500 J 50012/04/00 TB 13357 4500 630 < 500 < 500 < 500 22000 < 500 < 500 890 < 500 < 5000 < 500 < 500 < 500 D 160000 < 500 5200 < 500 1500

01/02/01 TB 13450 < 1000 780 < 500 < 500 < 500 D 33000 < 500 < 500 1300 < 500 < 5000 < 500 < 500 < 500 200000 < 500 7600 < 500 2400

02/03/01 TB 13710 1900 680 < 100 410 3400 D 34000 < 100 < 100 1600 < 100 2900 < 100 < 100 < 100 D 1100000 < 100 D 8100 < 100 2980

02/21/01 TB 13841 7200 < 500 < 500 < 500 3700 28000 < 500 < 500 1600 < 500 J 2300 < 500 < 500 < 500 D 260000 < 500 7900 < 500 2700

03/16/01 TB 14019 2000 J 240 < 250 < 250 3300 D 26000 < 250 < 250 1500 < 250 2600 < 250 < 250 < 250 D 310000 < 250 6300 < 250 2700

05/30/01 TB 14540 3000 < 100 < 100 < 100 1500 D 12000 < 100 < 100 1300 < 100 2800 < 100 < 100 < 100 D 140000 < 100 4800 < 100 224007/05/01 TB 14725 6800 < 625 < 625 < 625 < 625 25000 < 625 < 625 1800 < 625 < 6250 < 625 < 625 < 625 210000 < 625 6600 < 625 300008/08/01 TB 14893 5200 < 625 < 625 < 625 < 625 22000 < 625 < 625 1600 < 625 J 2000 < 625 < 625 < 625 160000 < 625 6200 < 625 287509/06/01 TB 15206 2800 < 800 < 800 < 800 6200 28000 < 800 < 800 1900 < 800 J 4300 < 800 < 800 < 800 D 440000 < 800 7000 < 800 384010/09/01 TB 15324 14000 < 1000 < 1000 < 1000 < 1000 28000 < 1000 1100 2000 < 1000 < 10000 < 1000 < 1000 < 1000 330000 < 1000 7600 < 1000 360010/16/01 TB 15349 11000 < 1000 < 1000 < 1000 < 1000 29000 < 1000 < 1000 2200 < 1000 J 1900 < 1000 < 1000 < 1000 270000 < 1000 8000 < 1000 360010/22/01 TB 15375 J 1500 < 1000 < 1000 < 1000 < 1000 28000 < 1000 < 1000 2400 < 1000 J 1700 < 1000 < 1000 < 1000 230000 < 1000 8100 < 1000 380010/30/01 TB 15425 2600 < 1000 < 1000 < 1000 1000 27000 < 1000 < 1000 2200 < 1000 J 1400 < 1000 < 1000 < 1000 290000 < 1000 7900 < 1000 380011/06/01 TB 15538 3300 < 1000 < 1000 < 1000 < 1000 29000 < 1000 < 1000 2000 < 1000 J 1300 < 1000 < 1000 < 1000 D 500000 < 1000 7300 < 1000 340011/13/01 TB 15628 2700 < 1000 < 1000 < 1000 < 1000 25000 < 1000 < 1000 1900 < 1000 J 990 < 1000 < 1000 < 1000 420000 < 1000 6900 < 1000 340011/20/01 TB 15726 J 1300 < 1000 < 1000 < 1000 < 1000 25000 < 1000 < 1000 2100 < 1000 < 10000 < 1000 < 1000 < 1000 230000 < 1000 6900 < 1000 340011/27/01 TB 15760 2400 < 1000 < 1000 < 1000 < 1000 23000 < 1000 < 1000 1900 < 1000 < 10000 < 1000 < 1000 < 1000 440000 < 1000 6100 < 1000 320012/05/01 TB 15853 3700 < 1000 < 1000 < 1000 < 1000 25000 < 1000 < 1000 2100 < 1000 J 1100 < 1000 < 1000 < 1000 240000 < 1000 7000 < 1000 340012/11/01 TB 15926 2400 < 1000 < 1000 < 1000 2400 25000 < 1000 < 1000 1900 < 1000 J 1600 < 1000 < 1000 < 1000 240000 < 1000 6900 < 1000 3400

01/03/02 TB 16092 2700 < 1000 < 1000 < 1000 < 1000 24000 < 1000 < 1000 1900 < 1000 < 10000 < 1000 < 1000 < 1000 D 700000 < 1000 7000 < 1000 340001/25/02 TB 16257 3900 < 1000 < 1000 < 1000 1700 34000 < 1000 < 1000 2100 < 1000 J 2000 < 1000 < 1000 < 1000 D 630000 < 1000 8000 < 1000 400003/28/02 TB 16753 3200 < 1000 < 1000 < 1000 < 1000 40000 < 1000 < 1000 2000 < 1000 J 1500 < 1000 < 1000 < 1000 D 600000 < 1000 8000 < 1000 4000

04/30/02 TB 16890 J 1900 < 1000 < 1000 < 1000 < 1000 31000 < 1000 < 1000 1700 < 1000 < 10000 < 1000 < 1000 < 1000 D 690000 < 1000 5800 < 1000 4200

06/10/02 TB 17284 J 730 < 500 < 500 < 500 < 500 14000 < 500 < 500 1000 < 500 < 5000 < 500 < 500 < 500 D 530000 < 500 1900 < 500 2300

07/21/02 TB 17470 2700 < 625 < 625 < 625 < 625 22000 < 625 < 625 1100 < 625 < 6250 < 625 < 625 < 625 D 410000 < 625 2900 < 625 1875

08/09/02 TB 17660 720 < 250 < 250 < 250 < 250 8900 < 250 < 250 570 < 250 < 2500 < 250 < 250 < 250 D 280000 < 250 950 < 250 1000

09/19/02 TB 17968 560 < 250 < 250 < 250 < 250 11000 < 250 < 250 570 < 250 < 2500 < 250 < 250 < 250 D 380000 < 250 1600 < 250 115009/30/02 TB 18005 1700 < 250 < 250 < 250 < 250 7500 < 250 < 250 390 < 250 < 2500 < 250 < 250 < 250 D 310000 < 250 840 < 250 85010/29/02 TB 18110 2100 < 250 < 250 < 250 < 250 7000 < 250 < 250 300 < 250 < 2500 < 250 < 250 < 250 D 281000 < 250 800 < 250 900

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 227 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

KW-021RJUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: MW-10 South

11/26/02 TB 18328 900 < 250 < 250 < 250 < 250 6400 < 250 < 250 300 < 250 < 2500 < 250 < 250 < 250 D 748000 < 250 700 < 250 74012/07/02 TB 18345 930 < 125 < 125 < 125 < 125 5000 < 125 < 125 250 < 125 < 1250 < 125 < 125 < 125 D 750000 < 125 530 < 125 760

01/03/03 TB 18411 640 < 100 < 100 < 100 < 100 2800 < 100 < 100 140 < 100 J 640 < 100 < 100 < 100 D 360000 < 100 290 < 100 72002/19/03 TB 18736 1700 < 50 < 50 J 48 85 1500 < 50 < 50 87 J 11 J 470 68 < 50 < 50 D 790000 < 50 200 J 17 58004/10/03 TB 19086 980 < 100 < 100 < 100 < 300 3040 < 100 < 100 100 < 100 < 400 < 80 < 100 < 100 535000 < 100 440 < 40 66005/08/03 TB 19216 880 < 100 < 100 < 100 < 300 3660 < 100 < 100 100 < 100 < 400 < 80 < 100 < 100 373000 < 100 440 < 40 50006/11/03 TB 19369 1170 < 50 < 50 < 50 < 150 6680 < 50 < 50 170 < 50 < 200 J 40 < 50 < 50 147000 < 50 710 < 20 87007/16/03 TB 19499 1590 < 50 < 50 < 50 < 150 12300 < 50 < 50 234 < 50 < 200 500 < 50 < 50 244000 < 50 1120 < 20 91508/15/03 TB 19639 1240 < 40 < 40 < 40 < 120 6300 < 40 < 40 144 < 40 < 160 J 40 < 40 < 40 275000 < 40 272 < 16 62409/11/03 TB 19796 940 < 50 < 50 < 50 < 150 8380 < 50 < 50 170 < 50 < 200 < 40 < 50 < 50 516000 < 50 430 < 20 750

10/07/03 TB 19875 1120 < 80 < 80 < 80 < 240 7200 < 80 < 80 176 < 80 < 320 < 64 < 80 < 80 344000 < 80 336 < 32 720

11/11/03 TB 19975 1070 < 80 < 80 < 80 < 240 6150 < 80 < 80 160 < 80 < 320 < 64 < 80 < 80 430000 < 80 416 < 32 736

12/04/03 TB 20135 1170 < 80 < 80 < 80 < 240 3200 < 80 < 80 112 < 80 < 320 < 64 < 80 < 80 525000 < 80 144 < 32 570

02/18/04 TB 20405 1150 < 80 < 80 < 80 < 240 5070 < 80 < 80 84 < 80 960 J 64 < 80 < 80 342000 < 80 580 < 32 61104/09/04 TB 20668 1490 < 125 < 125 < 125 < 375 4990 < 125 < 125 163 < 125 < 500 < 100 < 125 < 125 736000 < 125 647 < 50 74305/18/04 TB 20721 1270 < 125 < 125 < 125 < 375 9240 < 125 < 125 215 < 125 < 500 < 100 < 125 < 125 967000 < 125 1050 < 50 102806/29/04 TB 20827 1450 < 200 < 200 < 200 < 600 24200 < 200 < 200 1040 < 200 < 800 < 160 < 200 < 200 505000 < 200 4550 < 80 228007/23/04 TB 20897 995 < 500 < 500 < 500 < 1500 21800 < 500 < 500 664 < 500 < 2000 < 400 < 500 < 500 708000 < 500 2220 < 200 125008/19/04 TB 20924 1240 < 500 < 500 < 500 < 1500 24400 < 500 < 500 870 < 500 < 2000 < 400 < 500 < 500 424000 < 500 2310 < 200 1785

02/14/05 TB 22024 < 1000 < 1000 < 1000 < 1000 J 5530 29100 < 1000 < 1000 < 1000 < 1000 < 4000 < 800 < 1000 < 1000 548000 < 1000 3330 < 400 J 48605/04/05 TB 22436 1980 < 500 < 500 < 500 < 1500 20900 < 500 < 500 1270 < 500 < 2000 < 400 < 500 < 500 873000 < 500 676 < 200 2309

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 228 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

KW-027JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: MW-10 South

12/11/98 TB 06896 J 2000 < 25 < 25 690 < 100 80 < 25 680 < 50 < 25 < 50 < 50 < 25 < 50 9000 < 25 56 < 75 < 25

01/21/99 TB 07271 < 500 J 23 < 25 D 2200 < 100 100 120 D 930 J 35 J 15 < 50 < 50 J 15 J 10 1500 < 25 65 < 75 9502/05/99 TB 07399 < 2000 < 100 < 100 1700 < 400 120 J 54 870 < 200 < 100 < 200 < 200 < 100 < 200 7800 < 100 J 42 < 300 J 4408/17/99 TB 09324 < 10 J 2 < 5 60 < 5 10 6 110 < 5 < 5 < 50 < 5 < 5 < 5 880 < 5 < 5 < 5 < 509/09/99 TB 09643 < 10 < 5 < 5 6 < 5 < 5 < 5 14 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 510/08/99 TB 10025 < 10 < 5 < 5 60 < 5 < 5 < 5 95 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 511/05/99 TB 10371 < 10 < 5 < 5 20 < 5 < 5 < 5 49 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 5

02/02/00 TB 11075 < 10 5 < 5 25 < 5 < 5 16 180 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 505/19/00 TB 11799 < 10 30 < 5 100 < 5 5 56 D 380 < 5 < 5 < 50 < 5 < 5 13 < 100 < 5 < 5 17 < 5

10/20/00 TB 12886 < 25 135 < 15 D 965 < 15 185 425 D 615 < 15 < 15 < 105 < 15 < 15 67 D 2905 < 15 < 15 85 < 15

02/21/01 TB 13843 4700 150 < 125 1680 < 125 170 370 4300 < 125 140 < 1250 < 125 < 125 < 125 < 2500 < 125 < 125 < 125 < 12505/04/01 TB 14329 100 D 330 15 D 5400 < 10 D 440 D 1000 D 6300 < 10 D 350 < 100 < 10 23 280 D 30000 12 80 170 112

08/20/01 TB 15036 J 250 310 < 200 3800 < 200 540 1100 420 < 200 < 200 < 2000 < 200 < 200 < 200 12000 < 200 < 200 < 200 < 20011/01/01 TB 15466 < 400 480 < 200 D 11000 < 200 960 1800 D 14000 < 200 450 < 2000 < 200 < 200 200 13000 < 200 J 150 < 200 < 200

01/12/02 TB 16137 130 63 < 40 1100 < 40 50 140 960 < 40 < 40 < 400 < 40 < 40 J 30 4000 < 40 < 40 < 40 < 4001/25/02 TB 16258 110 50 < 40 930 < 40 J 36 110 790 < 40 < 40 < 400 < 40 < 40 < 40 2400 < 40 < 40 < 40 < 4003/28/02 TB 16754 260 J 28 < 40 750 < 40 55 73 660 < 40 J 16 < 400 < 40 J 11 J 14 3600 < 40 < 40 < 40 J 3204/30/02 TB 16891 310 26 < 20 710 < 20 61 74 670 < 20 J 15 < 200 < 20 J 11 J 15 2900 < 20 < 20 < 20 J 4406/08/02 TB 17279 98 20 < 13 500 < 13 53 60 550 < 13 J 11 < 125 < 13 J 10 J 11 2000 < 13 < 13 < 13 4507/14/02 TB 17429 400 37 < 25 860 < 25 72 120 1200 < 25 J 25 < 250 < 25 J 11 J 18 3400 < 25 < 25 < 25 J 4008/25/02 TB 17779 120 13 < 10 350 < 10 38 42 410 < 10 J 8 < 100 < 10 J 8 J 7 1700 < 10 < 10 < 10 3209/19/02 TB 17969 74 15 < 13 350 < 13 45 47 470 < 13 J 8 < 125 < 13 J 9 J 8 1300 < 13 < 13 < 13 3009/30/02 TB 18006 510 12 < 10 270 < 10 41 39 380 < 10 J 6 < 100 < 10 J 8 J 7 1200 < 10 < 10 < 10 2610/29/02 TB 18111 D 520 20 < 10 490 < 10 52 60 D 800 < 10 18 < 100 < 10 J 8 14 1600 < 10 < 10 10 2611/26/02 TB 18329 180 J 10 < 10 300 < 10 38 30 360 < 10 J 6 < 100 < 10 J 6 J 6 5000 < 10 < 10 < 10 2012/07/02 TB 18346 67 16 < 13 440 < 13 32 32 550 < 13 J 12 < 125 < 13 J 7 J 7 1800 < 13 < 13 J 11 J 12

01/02/03 TB 18403 62 12 < 10 310 < 10 33 29 410 < 10 J 8 < 100 < 10 J 6 J 6 2600 < 10 < 10 J 7 J 1403/10/03 TB 18949 210 13 < 13 320 < 13 48 36 480 < 13 J 11 < 125 < 13 J 7 < 13 1200 < 13 < 13 J 9 J 2304/11/03 TB 19088 856 < 10 < 10 382 < 30 50 32 388 < 10 < 10 < 40 < 8 < 10 < 10 2120 < 10 < 10 J 5 3205/08/03 TB 19217 72 12 < 10 448 < 30 < 10 38 482 < 10 10 < 40 < 8 < 10 < 10 1500 < 10 < 10 J 6 < 10

06/11/03 TB 19370 326 14 < 10 320 < 30 60 42 506 < 10 10 < 40 < 8 < 10 < 10 572 < 10 < 10 J 6 22

07/16/03 TB 19500 538 120 < 10 2340 J 44 186 140 2800 < 10 228 < 40 < 8 < 10 58 3570 < 10 12 256 24

08/15/03 TB 19640 < 10 10 < 10 320 < 30 < 10 28 422 < 10 < 10 < 40 < 8 < 10 < 10 356 < 10 < 10 < 4 < 1009/11/03 TB 19797 364 14 < 10 480 < 30 56 42 488 < 10 14 < 40 < 8 < 10 < 10 1370 < 10 < 10 < 4 28

10/07/03 TB 19876 344 10 < 10 380 < 30 50 36 434 < 10 10 < 40 < 8 < 10 < 10 1150 < 10 < 10 < 4 2011/11/03 TB 19961 86 12 < 10 470 < 30 40 40 436 < 10 14 < 40 < 8 < 10 < 10 2350 < 10 < 10 J 6 18

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 229 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

KW-027JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: MW-10 South

12/04/03 TB 20136 376 12 < 10 508 < 30 56 40 474 < 10 12 < 40 < 8 < 10 < 10 1750 < 10 < 10 J 4 22

02/04/04 TB 20261 128 22 < 10 439 < 30 48 52 683 < 10 14 < 40 < 8 < 10 13 1650 < 10 < 10 J 13 2108/19/04 TB 20927 129 16 < 10 493 < 30 39 50 551 < 10 12 < 40 < 8 < 10 < 10 4060 < 10 < 10 J 5 J 6

02/11/05 TB 21989 249 30 < 20 676 < 60 54 62 731 < 20 < 20 < 80 < 16 < 20 < 20 5730 < 20 < 20 J 25 J 805/04/05 TB 22437 175 20 < 20 537 < 60 44 65 641 < 20 < 20 < 80 < 16 < 20 < 20 4490 < 20 < 20 < 8 < 20

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 230 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

KW-029JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: MW-10 South

12/11/98 TB 06898 < 100 < 5 < 5 < 5 < 20 < 5 < 5 < 5 < 10 < 5 < 10 < 10 < 5 < 10 < 100 < 5 < 10 < 15 < 5

01/21/99 TB 07273 < 100 < 5 < 5 31 < 20 < 5 < 5 48 < 10 < 5 < 10 < 10 < 5 < 10 < 100 < 5 < 10 < 15 < 502/05/99 TB 07401 < 100 < 5 < 5 20 < 20 < 5 < 5 13 < 10 < 5 < 10 < 10 < 5 < 10 < 100 < 5 < 10 < 15 < 508/17/99 TB 09326 < 10 < 5 < 5 < 5 < 5 < 5 < 5 J 4 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 509/09/99 TB 09645 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 510/08/99 TB 10027 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 511/05/99 TB 10373 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 5

02/02/00 TB 11076 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 505/19/00 TB 11801 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 5

10/20/00 TB 12888 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 5

02/21/01 TB 13845 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 505/04/01 TB 14331 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 508/20/01 TB 15038 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 511/01/01 TB 15468 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 5

03/09/02 TB 16676 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 5

03/10/03 TB 18950 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 508/15/03 TB 19632 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

02/04/04 TB 20262 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 508/19/04 TB 20928 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 510/21/04 TB 21374 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 511/18/04 TB 21461 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 512/08/04 TB 21599 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

01/10/05 TB 21754 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 502/11/05 TB 21990 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 506/16/05 TB 22688 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 231 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

KW-030JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: MW-10 South

10/09/01 TB 15325 440 120 < 50 60 < 50 1700 < 50 < 50 < 50 < 50 < 500 < 50 < 50 < 50 6100 < 50 110 53 20010/16/01 TB 15348 790 230 < 50 100 < 50 D 6300 < 50 59 230 < 50 < 500 < 50 < 50 < 50 D 19000 < 50 930 160 74010/22/01 TB 15376 400 180 < 160 < 160 < 160 4000 < 160 < 160 < 160 < 160 < 1600 < 160 < 160 < 160 8300 < 160 530 J 140 J 38410/30/01 TB 15424 J 290 190 < 160 < 160 < 160 4600 < 160 < 160 < 160 < 160 < 1600 < 160 < 160 < 160 4200 < 160 590 J 130 41611/06/01 TB 15537 1300 450 < 160 < 160 320 D 14000 < 160 J 140 360 < 160 < 1600 < 160 < 160 < 160 11000 < 160 2100 350 102411/13/01 TB 15627 710 270 < 200 < 200 < 200 8200 < 200 < 200 J 190 < 200 < 2000 < 200 < 200 < 200 7900 < 200 1200 J 170 64011/20/01 TB 15727 420 J 180 < 200 < 200 < 200 4800 < 200 < 200 < 200 < 200 < 2000 < 200 < 200 < 200 21000 < 200 610 < 200 < 20011/27/01 TB 15761 420 J 140 < 200 < 200 < 200 4200 < 200 < 200 J 100 < 200 < 2000 < 200 < 200 < 200 7300 < 200 570 < 200 J 32012/11/01 TB 15925 1200 270 < 200 < 200 < 200 8200 < 200 < 200 J 200 < 200 < 2000 < 200 < 200 < 200 4300 < 200 1300 J 120 680

01/12/02 TB 16138 1100 200 < 200 < 200 < 200 6000 < 200 J 140 J 100 < 200 < 2000 < 200 < 200 < 200 8500 < 200 640 < 200 J 400

01/25/02 TB 16259 610 210 < 100 150 < 100 D 7800 < 100 200 J 96 < 100 < 1000 < 100 < 100 < 100 6800 < 100 740 J 99 560

03/28/02 TB 16755 520 J 160 < 200 J 170 250 5300 < 200 230 J 85 < 200 < 2000 < 200 < 200 < 200 10000 < 200 480 J 69 J 320

04/30/02 TB 16892 J 360 J 140 < 200 J 160 < 200 3800 < 200 280 J 67 < 200 < 2000 < 200 < 200 < 200 9100 < 200 330 J 81 J 280

06/08/02 TB 17280 920 160 < 100 560 < 100 3700 110 1000 J 45 < 100 < 1000 < 100 < 100 < 100 16000 < 100 310 J 62 300

07/14/02 TB 17430 450 < 125 < 125 760 < 125 3800 150 1500 J 42 < 125 < 1250 < 125 < 125 < 125 16000 < 125 320 < 125 32508/09/02 TB 17661 410 150 < 100 800 < 100 3400 190 1800 J 29 < 100 < 1000 < 100 < 100 J 40 7600 < 100 240 J 48 28009/19/02 TB 17970 480 100 < 50 600 < 50 1800 150 1400 J 19 < 50 < 500 < 50 < 50 J 33 4400 < 50 180 J 36 22009/30/02 TB 18007 920 93 < 50 530 < 50 1600 130 1300 J 19 < 50 < 500 < 50 < 50 J 29 5600 < 50 170 J 25 21010/29/02 TB 18112 1030 70 < 50 360 < 50 1870 120 1080 J 24 < 50 < 500 < 50 < 50 < 50 3900 < 50 170 < 50 19011/26/02 TB 18330 360 63 < 50 390 < 50 1600 76 800 J 22 < 50 < 500 < 50 < 50 J 17 7800 < 50 170 J 18 16012/07/02 TB 18347 120 47 < 20 300 < 20 810 65 770 < 20 < 20 < 200 < 20 < 20 J 14 5200 < 20 61 J 17 86

01/03/03 TB 18412 < 100 J 49 < 50 210 < 50 1000 J 25 420 < 50 < 50 < 500 < 50 < 50 < 50 13000 < 50 85 J 18 J 6002/19/03 TB 18737 120 37 < 25 100 < 25 990 J 20 200 30 < 25 < 250 < 25 < 25 < 25 1700 < 25 150 J 20 9504/10/03 TB 19087 36 33 < 5 68 < 15 718 11 139 14 < 5 < 20 < 4 < 5 < 5 2120 < 5 65 12 6205/08/03 TB 19218 124 32 < 20 76 < 60 992 < 20 112 < 20 < 20 < 80 < 16 < 20 < 20 1660 < 20 92 J 12 8006/11/03 TB 19371 65 35 < 25 < 25 < 75 755 < 25 85 < 25 < 25 < 100 < 20 < 25 < 25 675 < 25 65 J 20 7007/16/03 TB 19501 135 25 < 25 30 < 75 870 < 25 65 < 25 < 25 < 100 < 20 < 25 < 25 895 < 25 95 < 10 7008/15/03 TB 19641 80 < 20 < 20 28 < 60 568 < 20 52 < 20 < 20 < 80 < 16 < 20 < 20 1430 < 20 44 < 8 4809/11/03 TB 19798 115 < 25 < 25 35 J 135 695 < 25 70 < 25 < 25 < 100 < 20 < 25 < 25 1510 < 25 55 < 10 6010/07/03 TB 19877 70 30 < 25 35 < 75 895 < 25 70 25 < 25 < 100 < 20 < 25 < 25 1210 < 25 115 J 35 7511/11/03 TB 19976 160 < 25 < 25 35 < 75 740 < 25 65 25 < 25 < 100 < 20 < 25 < 25 2020 < 25 115 J 10 85

12/04/03 TB 20137 78 14 < 10 32 < 30 478 < 10 68 10 < 10 < 40 < 8 < 10 < 10 1430 < 10 34 J 4 42

02/18/04 TB 20408 66 14 < 10 33 < 30 530 < 10 68 12 < 10 < 40 < 8 < 10 < 10 892 < 10 44 J 4 40

04/09/04 TB 20669 58 14 < 10 32 < 30 485 < 10 64 10 < 10 < 40 < 8 < 10 < 10 1700 < 10 36 J 4 36

05/18/04 TB 20722 64 14 < 10 29 < 30 476 < 10 56 < 10 < 10 < 40 < 8 < 10 < 10 1620 < 10 39 J 4 34

06/29/04 TB 20828 32 14 < 5 28 < 15 354 8 54 8 < 5 < 20 < 4 < 5 < 5 921 < 5 37 J 3 3208/19/04 TB 20929 64 18 < 10 32 < 30 657 < 10 46 12 < 10 < 40 < 8 < 10 < 10 1670 < 10 53 J 5 37

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 232 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

KW-030JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: MW-10 South

02/14/05 TB 22027 30 7 < 5 12 < 15 242 < 5 16 7 < 5 < 20 < 4 < 5 < 5 650 < 5 21 < 2 1405/04/05 TB 22439 20 5 < 5 11 < 15 151 < 5 11 < 5 < 5 < 20 < 4 < 5 < 5 963 < 5 5 < 2 J 3

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 233 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

MW-115JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: MW-10 South

12/01/03 TB 20086 116 < 5 < 5 28 < 15 61 7 67 < 5 < 5 < 20 < 4 < 5 < 5 2490 < 5 < 5 < 2 3912/02/03 TB 20092 140 < 5 < 5 30 < 15 58 < 5 73 < 5 < 5 < 20 < 4 < 5 < 5 2300 < 5 < 5 < 2 3812/03/03 TB 20120 149 < 5 < 5 31 < 15 60 8 75 < 5 < 5 < 20 < 4 < 5 < 5 2570 < 5 < 5 < 2 4012/15/03 TB 20186 83 < 5 < 5 31 < 15 46 8 77 < 5 < 5 < 20 < 4 < 5 < 5 1790 < 5 < 5 < 2 25

01/12/04 TB 20209 40 < 5 < 5 22 < 15 20 5 52 < 5 < 5 < 20 < 4 < 5 < 5 671 < 5 < 5 < 2 < 502/04/04 TB 20275 20 < 5 < 5 20 < 15 21 6 61 < 5 < 5 < 20 < 4 < 5 < 5 1240 < 5 < 5 < 2 < 504/08/04 TB 20639 < 5 < 5 < 5 21 < 15 < 5 < 5 51 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 505/18/04 TB 20724 53 < 5 < 5 27 < 15 17 6 67 < 5 < 5 < 20 < 4 < 5 < 5 1680 < 5 < 5 < 2 < 506/29/04 TB 20830 5 < 5 < 5 28 < 15 5 5 70 < 5 < 5 < 20 < 4 < 5 < 5 303 < 5 < 5 < 2 < 507/23/04 TB 20898 11 < 5 < 5 27 < 15 7 < 5 68 < 5 < 5 < 20 < 4 < 5 < 5 703 < 5 < 5 < 2 < 5

08/19/04 TB 20934 111 < 5 < 5 28 < 15 33 6 75 < 5 < 5 < 20 < 4 < 5 < 5 2810 < 5 < 5 < 2 < 510/21/04 TB 21378 10 < 5 < 5 25 < 15 5 5 56 < 5 < 5 < 20 < 4 < 5 < 5 1390 < 5 < 5 < 2 < 511/18/04 TB 21465 208 < 5 < 5 37 < 15 49 8 94 < 5 < 5 < 20 < 4 < 5 < 5 2830 < 5 < 5 < 2 < 512/08/04 TB 21603 224 < 5 < 5 37 < 15 60 9 87 < 5 < 5 < 20 < 4 < 5 < 5 4360 < 5 < 5 < 2 < 5

01/10/05 TB 21758 218 < 5 < 5 35 < 15 57 8 77 < 5 < 5 < 20 < 4 < 5 < 5 3390 < 5 < 5 < 2 < 502/14/05 TB 22028 240 < 5 < 5 34 < 15 60 7 82 < 5 < 5 < 20 < 4 < 5 < 5 2770 < 5 < 5 < 2 < 506/15/05 TB 22673 112 5 < 5 46 < 15 29 6 99 < 5 < 5 < 20 < 4 < 5 < 5 2290 < 5 < 5 < 2 < 5

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 234 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

FW-002JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: Office Trailer

02/07/97 TB 01647 37 < 5 < 5 < 10 15 2 < 5 < 5 < 10 1 240 < 5 15 < 10 15

02/22/02 TB 16523 < 10 18 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 540 < 5 < 5 < 5 < 5

02/27/03 TB 18801 < 10 J 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 18 < 5 < 5 D 59000 < 5 < 5 < 5 < 5

02/25/04 TB 20468 < 5 < 5 < 5 < 5 J 15 < 5 < 5 < 5 < 5 < 5 < 20 17 < 5 < 5 30900 < 5 < 5 < 2 < 508/31/04 TB 21067 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 15 < 5 < 5 27200 < 5 < 5 < 2 < 510/18/04 TB 21322 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 15 < 5 < 5 22100 < 5 < 5 < 2 < 511/18/04 TB 21467 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 19 < 5 < 5 117000 < 5 < 5 < 2 < 512/08/04 TB 21578 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 16 < 5 < 5 41300 < 5 < 5 < 2 < 5

01/14/05 TB 21800 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 15 < 5 < 5 43400 < 5 < 5 < 2 < 502/16/05 TB 22081 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 15 < 5 < 5 25500 < 5 < 5 < 2 < 505/13/05 TB 22515 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 15 < 5 < 5 33200 < 5 < 5 < 2 < 5

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 235 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

FW-003JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: Office Trailer

02/03/97 TB 01627 33 < 5 < 5 < 10 21 < 5 1 < 5 < 10 1 < 50 < 5 14 < 10 4

02/21/02 TB 16509 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 5

02/27/03 TB 18802 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 5

02/25/04 TB 20469 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 509/17/04 TB 21246 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 510/18/04 TB 21323 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 511/18/04 TB 21468 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 512/08/04 TB 21579 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

01/14/05 TB 21801 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 502/16/05 TB 22105 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 505/13/05 TB 22516 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 236 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

FW-007JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: Office Trailer

02/03/97 TB 01607 58 < 5 < 5 < 10 31 2 2 < 5 < 10 2 < 50 1 20 < 10 6

02/21/02 TB 16511 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 J 76 < 5 < 5 < 5 < 5

02/27/03 TB 18804 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 5

09/17/04 TB 21247 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 510/18/04 TB 21324 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 511/18/04 TB 21469 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 512/08/04 TB 21580 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

01/14/05 TB 21802 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

02/16/05 TB 22084 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 505/13/05 TB 22517 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 237 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

FW-009JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: Office Trailer

09/25/98 TB 05943 < 500 < 250 < 250 < 250 < 1000 D 20000 < 250 < 250 J 72 < 250 < 500 < 500 < 250 < 500 E 1300000 < 250 2400 < 750 < 25010/20/98 TB 06213 J 43 36 < 5 < 5 < 20 D 280 < 5 < 5 J 2 < 5 < 10 < 10 < 5 < 10 < 100 < 5 55 < 15 J 1211/08/98 TB 06470 < 100 < 5 < 5 < 5 < 20 D 600 < 5 < 5 J 5 < 5 < 10 < 10 < 5 < 10 < 100 < 5 190 < 15 J 1012/02/98 TB 06844 120 11 < 5 < 5 < 20 D 1000 < 5 < 5 11 < 5 < 10 < 10 < 5 < 10 < 100 < 5 D 200 < 15 32

01/04/99 TB 07114 J 140 < 125 < 125 < 125 < 500 4000 < 125 < 125 J 27 < 125 < 250 < 250 < 125 < 250 < 2500 < 125 740 < 375 J 5502/17/99 TB 07551 < 100 6 < 5 < 5 < 20 220 < 5 < 5 J 3 < 5 < 10 < 10 < 5 < 10 < 100 < 5 80 < 15 J 1005/15/99 TB 08293 < 100 13 < 5 < 5 < 20 D 4600 < 5 J 1 240 < 5 < 10 < 10 < 5 < 10 < 100 < 5 D 2600 < 15 27806/09/99 TB 08610 < 250 J 8 < 13 < 13 < 50 D 610 < 13 < 13 66 < 13 < 25 < 25 < 13 < 25 < 250 < 13 D 720 < 38 12007/06/99 TB 08892 < 500 54 < 25 < 25 < 100 530 < 25 < 25 J 44 < 25 < 50 < 50 < 25 < 50 < 500 < 25 440 < 75 J 9008/05/99 TB 09139 < 40 46 < 20 < 20 < 20 < 20 < 20 < 20 < 20 < 20 < 200 < 20 < 20 < 20 < 400 < 20 < 20 < 20 < 20

09/08/99 TB 09603 < 10 J 4 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 510/15/99 TB 10052 < 10 40 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 J 5 < 511/17/99 TB 10479 < 10 25 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 J 81 < 5 < 5 J 5 < 512/10/99 TB 10692 15 19 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 5

02/06/00 TB 11121 < 10 18 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 6 < 505/12/00 TB 11738 < 10 15 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 5

02/25/01 TB 13905 44 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 505/04/01 TB 14336 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 508/23/01 TB 15091 J 9 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 511/03/01 TB 15480 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 5

02/09/02 TB 16376 < 10 J 3 < 5 < 5 < 5 J 4 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 J 2 < 5 < 505/18/02 TB 17048 < 10 J 3 < 5 J 2 < 5 J 2 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 J 2 < 5 < 5 < 5

02/03/03 TB 18572 J 6 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 508/27/03 TB 19753 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

02/20/04 TB 20438 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 509/16/04 TB 21233 < 5 < 5 < 5 < 5 < 15 81 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 16 < 2 < 5

02/15/05 TB 22038 10 < 5 < 5 < 5 < 15 2710 < 5 < 5 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 110 < 2 J 503/08/05 TB 22244 < 50 < 50 < 50 < 50 < 150 1490 < 50 < 50 < 50 < 50 < 200 < 40 < 50 < 50 < 500 < 50 < 50 < 20 < 5004/05/05 TB 22272 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 238 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

FW-011JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: Office Trailer

01/26/99 TB 07315 J 3500 < 500 < 500 < 500 < 2000 16000 < 500 < 500 J 670 < 500 < 1000 < 1000 < 500 < 1000 < 10000 < 500 9900 < 1500 J 1200

08/23/01 TB 15092 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 510/14/01 TB 15330 33 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 5

02/24/02 TB 16539 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 505/18/02 TB 17049 < 10 < 5 < 5 < 5 < 5 J 4 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 5

02/27/03 TB 18805 < 10 < 5 < 5 < 5 < 5 17 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 5

02/25/04 TB 20472 7 < 5 < 5 < 5 < 15 532 < 5 < 5 6 < 5 < 20 < 4 < 5 < 5 < 50 < 5 18 < 2 J 405/21/04 TB 20760 37 < 25 < 25 < 25 < 75 4190 < 25 < 25 < 25 < 25 < 100 < 20 < 25 < 25 < 250 < 25 25 < 10 J 11

06/24/04 TB 20798 < 100 < 100 < 100 < 100 < 300 3430 < 100 < 100 < 100 < 100 < 400 < 80 < 100 < 100 < 1000 < 100 < 100 < 40 < 10007/22/04 TB 20875 37 < 20 < 20 < 20 < 60 571 < 20 < 20 < 20 < 20 < 80 < 16 < 20 < 20 < 200 < 20 < 20 < 8 J 10

09/17/04 TB 21248 < 5 < 5 < 5 < 5 < 15 33 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 510/18/04 TB 21325 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 511/18/04 TB 21470 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 512/08/04 TB 21581 < 5 < 5 < 5 < 5 < 15 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

01/14/05 TB 21803 < 5 < 5 < 5 < 5 < 15 19 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 502/16/05 TB 22085 61 < 5 < 5 < 5 < 15 168 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 5 < 2 J 305/13/05 TB 22518 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 239 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

FW-015JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: Office Trailer

02/02/99 TB 07369 < 100 < 5 < 5 < 5 < 20 55 < 5 < 5 < 10 < 5 < 10 < 10 < 5 < 10 < 100 < 5 10 < 15 J 403/11/99 TB 07731 J 13 < 5 < 5 < 5 < 20 22 < 5 < 5 < 10 < 5 < 10 < 10 < 5 < 10 < 100 < 5 J 4 < 15 J 205/15/99 TB 08297 180 J 2 < 5 < 5 < 20 D 590 < 5 < 5 < 10 < 5 < 10 < 10 < 5 < 10 < 100 < 5 15 < 15 3806/09/99 TB 08612 < 100 < 5 < 5 < 5 < 20 13 < 5 < 5 < 10 < 5 < 10 < 10 < 5 < 10 < 100 < 5 < 10 < 15 J 207/06/99 TB 08894 600 < 5 < 5 < 5 < 20 140 < 5 < 5 < 10 < 5 < 10 < 10 < 5 < 10 < 100 < 5 J 5 < 15 5308/05/99 TB 09141 120 < 5 < 5 < 5 < 5 D 630 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 22 < 5 4409/08/99 TB 09605 < 20 < 10 < 10 < 10 < 10 350 < 10 < 10 < 10 < 10 < 100 < 10 < 10 < 10 < 200 < 10 J 2 < 10 J 910/15/99 TB 10054 < 20 < 10 < 10 < 10 < 10 370 < 10 < 10 < 10 < 10 < 100 < 10 < 10 < 10 < 200 < 10 < 10 < 10 J 1811/17/99 TB 10481 50 < 5 < 5 < 5 < 5 120 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 512/10/99 TB 10694 < 10 < 5 < 5 < 5 < 5 190 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 J 3

05/13/00 TB 11750 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 5

02/25/01 TB 13907 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 505/02/01 TB 14301 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 J 2

08/22/01 TB 15069 17 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 511/03/01 TB 15482 J 5 < 5 < 5 < 5 11 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 5

02/07/02 TB 16363 < 10 < 5 < 5 < 5 11 J 2 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 505/17/02 TB 17030 < 10 < 5 < 5 < 5 12 55 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 6 < 5 J 508/03/02 TB 17603 37 < 5 < 5 < 5 11 18 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 J 8

02/03/03 TB 18574 J 8 < 5 < 5 < 5 < 5 44 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 5 < 5 < 505/13/03 TB 19276 < 5 < 5 < 5 < 5 < 15 9 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 J 208/27/03 TB 19763 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 J 211/17/03 TB 20042 31 < 5 < 5 < 5 60 2510 < 5 < 5 12 < 5 < 20 < 4 < 5 < 5 282 < 5 120 < 2 23

02/20/04 TB 20440 154 < 80 < 80 < 80 < 240 23700 < 80 < 80 < 80 < 80 < 320 < 64 < 80 < 80 < 800 < 80 221 < 32 J 8204/09/04 TB 20660 < 500 < 500 < 500 < 500 < 1500 36900 < 500 < 500 < 500 < 500 < 2000 < 400 < 500 < 500 < 5000 < 500 < 500 < 200 < 50005/21/04 TB 20762 < 500 < 500 < 500 < 500 < 1500 20000 < 500 < 500 < 500 < 500 < 2000 < 400 < 500 < 500 < 5000 < 500 < 500 < 200 < 50006/24/04 TB 20800 < 500 < 500 < 500 < 500 < 1500 19900 < 500 < 500 < 500 < 500 < 2000 < 400 < 500 < 500 < 5000 < 500 < 500 < 200 < 50007/22/04 TB 20877 < 500 < 500 < 500 < 500 < 1500 21700 < 500 < 500 < 500 < 500 < 2000 < 400 < 500 < 500 < 5000 < 500 < 500 < 200 < 50009/15/04 TB 21206 230 < 200 < 200 < 200 < 600 9300 < 200 < 200 < 200 < 200 < 800 < 160 < 200 < 200 < 2000 < 200 < 200 < 80 < 20010/18/04 TB 21326 258 < 200 < 200 < 200 < 600 6840 < 200 < 200 < 200 < 200 < 800 < 160 < 200 < 200 < 2000 < 200 < 200 < 80 < 20011/18/04 TB 21471 < 100 < 100 < 100 < 100 < 300 3340 < 100 < 100 < 100 < 100 < 400 < 80 < 100 < 100 < 1000 < 100 < 100 < 40 < 100

12/07/04 TB 21534 43 < 40 < 40 < 40 < 120 1730 < 40 < 40 < 40 < 40 < 160 < 32 < 40 < 40 < 400 < 40 70 < 16 97

01/14/05 TB 21804 168 < 100 < 100 < 100 < 300 3390 < 100 < 100 < 100 J 117 < 400 < 80 < 100 < 100 < 1000 < 100 < 100 < 40 J 58

02/15/05 TB 22040 < 50 < 50 < 50 < 50 < 150 1880 < 50 < 50 < 50 < 50 < 200 < 40 < 50 < 50 704 < 50 52 < 20 J 37

05/12/05 TB 22487 11 < 5 < 5 < 5 < 15 1840 < 5 < 5 18 < 5 < 20 < 4 < 5 < 5 < 50 < 5 54 < 2 82

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 240 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

FW-016JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: Office Trailer

03/11/99 TB 07732 J 410 < 100 < 100 < 100 < 400 3700 < 100 < 100 < 200 < 100 < 200 < 200 < 100 < 200 < 2000 < 100 540 < 300 J 19005/15/99 TB 08298 J 23 < 5 < 5 < 5 < 20 210 < 5 < 5 < 10 < 5 < 10 < 10 < 5 < 10 < 100 < 5 J 9 < 15 2006/09/99 TB 08613 < 100 < 5 < 5 < 5 < 20 72 < 5 < 5 < 10 < 5 < 10 < 10 < 5 < 10 < 100 < 5 < 10 < 15 < 507/06/99 TB 08895 3600 < 5 < 5 < 5 < 20 D 2600 < 5 < 5 25 < 5 < 10 < 10 < 5 < 10 < 100 < 5 D 220 < 15 40008/05/99 TB 09142 2500 < 5 < 5 < 5 < 5 D 4700 < 5 < 5 32 < 5 < 50 < 5 < 5 < 5 < 100 < 5 D 870 < 5 33009/08/99 TB 09606 130 < 25 < 25 < 25 < 25 870 < 25 < 25 < 25 < 25 < 250 < 25 < 25 < 25 < 500 < 25 27 < 25 J 3110/15/99 TB 10055 1700 < 25 < 25 < 25 < 25 D 2800 < 25 < 25 < 25 < 25 < 250 < 25 < 25 < 25 < 500 < 25 J 19 < 25 J 6511/17/99 TB 10482 170 < 10 < 10 J 6 J 3 250 < 10 < 20 J 10 < 10 < 100 < 10 < 10 < 10 < 200 < 10 < 10 < 10 2312/10/99 TB 10695 740 < 10 < 10 < 10 < 10 D 790 < 10 < 10 < 10 < 10 < 100 < 10 < 10 < 10 < 200 < 10 < 10 < 10 88

01/11/00 TB 10905 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 5

03/04/00 TB 11297 < 10 < 5 < 5 < 5 < 5 12 < 5 J 2 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 504/07/00 TB 11522 170 < 5 < 5 < 5 < 5 D 390 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 15 < 5 44

05/13/00 TB 11751 320 < 5 < 5 < 5 < 5 D 630 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 43 < 5 67

07/08/00 TB 12126 320 < 13 < 13 < 13 < 13 420 < 13 < 13 < 13 < 13 < 125 < 13 < 13 < 13 < 250 < 13 < 13 < 13 J 15

10/09/00 TB 12738 D 490 < 13 < 13 < 13 < 13 D 1400 < 13 24 < 13 < 13 < 125 < 13 < 13 < 13 < 250 < 13 15 < 13 8812/07/00 TB 13358 < 10 < 5 < 5 < 5 < 5 18 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 5

02/19/01 TB 13824 < 10 < 5 < 5 < 5 < 5 38 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 505/02/01 TB 14302 30 < 5 < 5 < 5 < 5 190 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 1606/04/01 TB 14592 D 850 < 5 < 5 < 5 < 5 D 350 < 5 < 5 11 < 5 < 50 < 5 < 5 < 5 120 < 5 < 5 < 5 3308/22/01 TB 15070 220 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 511/03/01 TB 15483 76 < 5 < 5 < 5 < 5 120 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 12

02/07/02 TB 16364 46 < 5 < 5 < 5 < 5 30 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 J 805/17/02 TB 17031 94 < 5 < 5 < 5 < 5 20 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 J 608/03/02 TB 17604 38 < 5 < 5 < 5 < 5 46 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 J 4

02/20/04 TB 20441 < 5 < 5 < 5 < 5 < 15 132 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 504/09/04 TB 20661 16 < 5 < 5 < 5 < 15 72 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 76 < 5 < 5 < 2 < 505/21/04 TB 20763 6 < 5 < 5 < 5 < 15 35 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 506/24/04 TB 20801 94 < 5 < 5 < 5 < 15 90 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 1807/22/04 TB 20878 < 5 < 5 < 5 < 5 < 15 10 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 509/17/04 TB 21249 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

02/15/05 TB 22041 33 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 505/12/05 TB 22488 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 241 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

FW-017JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: Office Trailer

02/07/99 TB 07416 < 2000 < 100 < 100 < 100 < 400 D 3900 < 100 < 100 J 51 < 100 < 200 < 200 < 100 < 200 < 2000 < 100 1700 < 300 J 19003/11/99 TB 07733 J 1700 < 100 < 100 < 100 < 400 D 9900 < 100 < 100 J 94 < 100 < 200 < 200 < 100 < 200 < 2000 < 100 2400 < 300 47005/15/99 TB 08299 J 530 < 100 < 100 < 100 < 400 3100 < 100 < 100 J 25 < 100 < 200 < 200 < 100 < 200 < 2000 < 100 340 < 300 15606/09/99 TB 08614 J 130 < 25 < 25 < 25 < 100 930 < 25 < 25 < 50 < 25 < 50 < 50 < 25 < 50 < 500 < 25 J 22 < 75 J 5807/06/99 TB 08896 13000 < 25 < 25 < 25 < 100 D 4300 < 25 < 25 150 < 25 < 50 < 50 < 25 < 50 < 500 < 25 760 < 75 110008/06/99 TB 09160 3100 < 25 < 25 < 25 < 25 D 4400 < 25 < 25 50 < 25 < 250 < 25 < 25 < 25 < 500 < 25 D 1900 < 25 87009/08/99 TB 09607 300 < 50 < 50 < 50 < 50 1600 < 50 < 50 < 50 < 50 < 500 < 50 < 50 < 50 < 1000 < 50 170 < 50 J 12010/15/99 TB 10056 1270 < 50 < 50 < 50 < 50 1150 < 50 < 50 < 50 < 50 < 500 < 50 < 50 < 50 < 1000 < 50 59 < 50 J 17011/17/99 TB 10483 580 < 10 < 10 < 10 < 10 400 < 10 < 10 < 10 < 10 < 100 < 10 < 10 < 10 < 200 < 10 < 10 < 10 10012/11/99 TB 10705 850 < 10 < 10 < 10 < 10 440 < 10 < 10 < 10 < 10 < 100 < 10 < 10 < 10 < 200 < 10 < 10 < 10 130

02/06/00 TB 11123 250 < 5 < 5 < 5 < 5 230 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 J 3 < 5 40

05/13/00 TB 11752 870 < 5 < 5 < 5 < 5 D 570 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 24 < 5 100

02/19/01 TB 13825 310 < 5 < 5 < 5 < 5 D 600 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 37

05/02/01 TB 14303 < 10 < 5 < 5 < 5 10 44 < 5 < 5 < 5 < 5 J 6 < 5 < 5 < 5 < 100 < 5 < 5 < 5 J 206/04/01 TB 14593 D 2600 < 5 < 5 < 5 < 5 D 1700 < 5 < 5 42 < 5 < 50 < 5 < 5 < 5 < 100 < 5 11 < 5 13108/22/01 TB 15071 D 350 < 5 < 5 < 5 < 5 D 440 < 5 < 5 13 < 5 < 50 < 5 < 5 < 5 < 100 < 5 J 5 < 5 4411/03/01 TB 15484 2100 < 80 < 80 < 80 < 80 3300 < 80 < 80 < 80 < 80 < 800 < 80 < 80 < 80 < 1600 < 80 J 70 < 80 J 144

02/07/02 TB 16365 900 < 13 < 13 < 13 < 13 D 2700 < 13 < 13 47 < 13 < 125 < 13 < 13 < 13 < 250 < 13 39 < 13 12305/17/02 TB 17032 1500 < 100 < 100 < 100 < 100 2800 < 100 < 100 < 100 < 100 < 1000 < 100 < 100 < 100 < 2000 < 100 < 100 < 100 J 10006/11/02 TB 17285 820 < 80 < 80 < 80 < 80 3600 < 80 < 80 83 < 80 < 800 < 80 < 80 < 80 < 1600 < 80 J 27 < 80 17608/03/02 TB 17605 500 < 80 < 80 < 80 < 80 2500 < 80 < 80 J 46 < 80 < 800 < 80 < 80 < 80 3400 < 80 < 80 < 80 J 12810/14/02 TB 18049 2500 < 50 < 50 < 50 < 50 1300 < 50 < 50 < 50 < 50 < 500 < 50 < 50 < 50 < 1000 < 50 J 10 < 50 J 9011/22/02 TB 18242 1500 < 40 < 40 < 40 < 40 1100 < 40 < 40 < 40 < 40 < 400 < 40 < 40 < 40 < 800 < 40 J 8 < 40 100

02/06/03 TB 18590 200 < 10 < 10 < 10 < 10 250 < 10 < 10 < 10 < 10 < 100 < 10 < 10 < 10 < 200 < 10 < 10 < 10 J 1804/15/03 TB 19089 212 < 5 < 5 < 5 < 15 312 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 2905/13/03 TB 19273 228 < 10 < 10 < 10 < 30 357 < 10 < 10 < 10 < 10 < 40 < 8 < 10 < 10 < 100 < 10 < 10 < 4 3506/13/03 TB 19390 74 < 10 < 10 < 10 < 30 250 < 10 < 10 < 10 < 10 < 40 < 8 < 10 < 10 < 100 < 10 < 10 < 4 < 1007/07/03 TB 19449 240 < 5 < 5 < 5 < 15 660 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 3408/26/03 TB 19744 310 < 5 < 5 < 5 < 15 1170 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 3509/11/03 TB 19799 440 < 40 < 40 < 40 < 120 1380 < 40 < 40 < 40 < 40 < 32 < 40 < 40 < 400 < 40 < 40 < 16 J 24

10/10/03 TB 19893 1080 < 5 < 5 < 5 < 15 1520 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 127 < 5 9 < 2 90

11/14/03 TB 20030 328 < 5 < 5 < 5 < 15 784 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 47

12/04/03 TB 20124 196 < 10 < 10 < 10 < 30 362 < 10 < 10 < 10 < 10 < 40 < 8 < 10 < 10 < 100 < 10 < 10 < 4 20

02/20/04 TB 20442 506 < 20 < 20 < 20 < 60 593 < 20 < 20 < 20 < 20 < 80 < 16 < 20 < 20 < 200 < 20 < 20 < 8 42

04/09/04 TB 20662 709 < 20 < 20 < 20 < 60 752 < 20 < 20 < 20 < 20 < 80 < 16 < 20 < 20 < 200 < 20 < 20 < 8 6405/21/04 TB 20764 207 < 5 < 5 < 5 < 15 25 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 16

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 242 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

FW-017JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: Office Trailer

06/24/04 TB 20802 792 < 5 < 5 < 5 < 15 417 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 8207/22/04 TB 20879 683 < 20 < 20 < 20 < 60 278 < 20 < 20 < 20 < 20 < 80 < 16 < 20 < 20 < 200 < 20 < 20 < 8 4509/15/04 TB 21207 366 < 10 < 10 < 10 < 30 223 < 10 < 10 < 10 < 10 < 40 < 8 < 10 < 10 < 100 < 10 < 10 < 4 22

02/15/05 TB 22042 347 < 10 < 10 < 10 < 30 190 < 10 < 10 < 10 < 10 < 40 < 8 < 10 < 10 < 100 < 10 < 10 < 4 2805/12/05 TB 22489 526 < 10 < 10 < 10 < 30 179 < 10 < 10 < 10 < 10 < 40 < 8 < 10 < 10 987 < 10 < 10 < 4 34

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 243 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

FW-018JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: Office Trailer

02/07/99 TB 07417 < 5000 < 250 < 250 < 250 < 1000 9100 < 250 < 250 < 500 < 250 < 500 < 500 < 250 < 500 < 5000 < 250 1400 < 750 < 25003/11/99 TB 07734 < 5000 < 250 < 250 < 250 < 1000 D 30000 < 250 < 250 J 200 < 250 < 500 < 500 < 250 < 500 < 5000 < 250 9100 < 750 J 31004/12/99 TB 08010 < 20000 < 1000 < 1000 < 1000 < 4000 37000 < 1000 < 1000 J 320 < 1000 < 2000 < 2000 < 1000 < 2000 < 20000 < 1000 15000 < 3000 J 38005/01/99 TB 08190 < 10000 < 500 < 500 < 500 < 2000 14000 < 500 < 500 J 150 < 500 < 1000 < 1000 < 500 < 1000 < 10000 < 500 6100 < 1500 J 23006/09/99 TB 08615 < 10000 < 500 < 500 < 500 < 2000 11000 < 500 < 500 J 130 < 500 < 1000 < 1000 < 500 < 1000 < 10000 < 500 5000 < 1500 J 21007/06/99 TB 08897 J 7800 < 500 < 500 < 500 < 2000 D 34000 < 500 < 500 J 440 < 500 < 1000 < 1000 < 500 < 1000 < 10000 < 500 15000 < 1500 J 98008/06/99 TB 09161 4000 < 500 < 500 < 500 < 500 23000 < 500 < 500 J 220 < 500 < 5000 < 500 < 500 < 500 < 10000 < 500 5600 < 500 J 61009/08/99 TB 09608 2100 < 500 < 500 < 500 < 500 12000 < 500 < 500 J 230 < 500 < 5000 < 500 < 500 < 500 < 10000 < 500 4600 < 500 J 37010/15/99 TB 10057 3600 < 200 < 200 < 200 < 200 6800 < 200 < 200 570 < 200 < 2000 < 200 < 200 < 200 < 4000 < 200 7650 < 200 160011/17/99 TB 10484 830 < 80 < 80 < 80 < 80 2900 < 80 < 80 J 45 < 80 < 800 < 80 < 80 < 80 < 1600 < 80 1200 < 80 384

12/11/99 TB 10706 2500 < 80 < 80 < 80 < 80 D 5350 < 80 < 80 880 < 80 < 800 < 80 < 80 < 80 < 1600 < 80 1810 < 80 1600

01/11/00 TB 10906 860 < 125 < 125 < 125 < 125 4900 < 125 < 125 < 125 < 125 < 1250 < 125 < 125 < 125 < 2500 < 125 3400 < 125 525

02/06/00 TB 11124 1190 < 80 < 80 < 80 < 80 1770 < 80 < 80 J 73 < 80 < 800 < 80 < 80 < 80 < 1600 < 80 1280 < 80 930

03/04/00 TB 11298 730 < 20 < 20 < 20 < 20 380 < 20 < 20 < 20 < 20 < 200 < 20 < 20 < 20 < 400 < 20 220 < 20 590

04/07/00 TB 11523 1100 < 25 < 25 < 25 < 25 930 < 25 < 25 J 20 < 25 < 250 < 25 < 25 < 25 < 500 < 25 320 < 25 34505/13/00 TB 11753 670 < 40 < 40 < 40 < 40 1200 < 40 J 22 < 40 < 40 < 400 < 40 < 40 < 40 < 800 < 40 86 < 40 J 13007/08/00 TB 12127 760 < 40 < 40 < 40 < 40 D 3000 < 40 < 40 < 40 < 40 < 400 < 40 < 40 < 40 < 800 < 40 J 25 < 40 19210/06/00 TB 12730 680 < 80 < 80 < 80 < 80 2700 < 80 < 80 < 80 < 80 < 800 < 80 < 80 < 80 < 1600 < 80 < 80 < 80 J 176

02/19/01 TB 13826 690 < 5 < 5 < 5 < 5 D 1500 < 5 < 5 J 3 < 5 < 50 < 5 < 5 < 5 < 100 < 5 48 < 5 15805/02/01 TB 14304 220 < 20 < 20 < 20 < 20 560 < 20 < 20 < 20 < 20 < 200 < 20 < 20 < 20 < 400 < 20 < 20 < 20 5208/22/01 TB 15072 D 390 < 10 < 10 < 10 < 10 D 610 < 10 < 10 39 < 10 < 100 < 10 < 10 < 10 600 < 10 20 < 10 10011/03/01 TB 15485 D 640 < 5 < 5 < 5 9 D 400 < 5 < 5 24 < 5 J 5 < 5 < 5 < 5 J 29 < 5 23 < 5 171

02/07/02 TB 16366 D 1000 < 20 < 20 < 20 < 20 150 < 20 < 20 < 20 < 20 < 200 < 20 < 20 < 20 < 400 < 20 < 20 < 20 7605/17/02 TB 17033 370 < 13 < 13 < 13 < 13 D 1100 < 13 < 13 < 13 < 13 < 125 < 13 < 13 < 13 < 250 < 13 J 7 < 13 6006/11/02 TB 17286 240 < 10 < 10 < 10 < 10 330 < 10 < 10 11 < 10 < 100 < 10 < 10 < 10 430 < 10 11 < 10 10608/03/02 TB 17606 12 < 5 < 5 < 5 < 5 19 < 5 < 5 J 2 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 1310/14/02 TB 18050 500 < 20 < 20 < 20 < 20 330 < 20 < 20 J 6 < 20 < 200 < 20 < 20 < 20 < 400 < 20 J 8 < 20 J 3611/22/02 TB 18243 D 2000 < 5 < 5 < 5 < 10 D 2300 < 5 < 5 25 < 5 < 10 < 5 < 5 < 5 < 100 < 5 15 < 5 150

02/06/03 TB 18591 370 < 13 < 13 < 13 < 13 D 1200 < 13 < 13 < 13 < 13 < 125 < 13 < 13 < 13 < 250 < 13 J 4 < 13 4505/13/03 TB 19277 518 < 50 < 50 < 50 < 150 1460 < 50 < 50 < 50 < 50 < 200 < 40 < 50 < 50 < 500 < 50 < 50 < 20 J 27

08/26/03 TB 19745 1280 < 25 < 25 < 25 < 75 3400 < 25 < 25 < 25 < 25 < 100 < 20 < 25 < 25 < 250 < 25 < 25 < 10 120

11/14/03 TB 20033 1730 < 25 < 25 < 25 < 75 6320 < 25 < 25 < 25 < 25 < 100 < 20 < 25 < 25 < 250 < 25 35 < 10 175

02/20/04 TB 20443 2000 < 80 < 80 < 80 < 240 3230 < 80 < 80 < 80 < 80 < 320 < 64 < 80 < 80 < 800 < 80 < 80 < 32 204

04/09/04 TB 20663 440 < 80 < 80 < 80 < 240 2690 < 80 < 80 < 80 < 80 < 320 < 64 < 80 < 80 < 800 < 80 < 80 < 32 J 32

05/21/04 TB 20765 704 < 80 < 80 < 80 < 240 5250 < 80 < 80 < 80 < 80 < 320 < 64 < 80 < 80 < 800 < 80 < 80 < 32 < 8006/24/04 TB 20803 591 < 80 < 80 < 80 < 240 3220 < 80 < 80 < 80 < 80 < 320 < 64 < 80 < 80 < 800 < 80 < 80 < 32 J 41

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 244 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

FW-018JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: Office Trailer

07/22/04 TB 20880 1170 < 80 < 80 < 80 < 240 4740 < 80 < 80 < 80 < 80 < 320 < 64 < 80 < 80 < 800 < 80 < 80 < 32 J 4009/15/04 TB 21208 726 < 40 < 40 < 40 < 120 1450 < 40 < 40 < 40 < 40 < 160 < 32 < 40 < 40 < 400 < 40 < 40 < 16 107

02/15/05 TB 22043 119 < 40 < 40 < 40 < 120 1380 < 40 < 40 < 40 < 40 < 160 < 32 < 40 < 40 < 400 < 40 42 < 16 < 4005/12/05 TB 22490 14 < 5 < 5 < 5 < 15 231 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 2880 < 5 < 5 < 2 47

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 245 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

FW-019JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: Office Trailer

02/11/99 TB 07467 < 2500 < 125 < 125 < 125 < 500 D 5000 < 125 < 125 J 56 < 125 < 250 < 250 < 125 < 250 < 2500 < 125 1125 < 375 J 9603/11/99 TB 07735 < 5000 < 250 < 250 < 250 < 1000 D 51000 < 250 < 250 J 220 < 250 < 500 < 500 < 250 < 500 < 5000 < 250 D 6000 < 750 J 35004/12/99 TB 08011 < 20000 < 1000 < 1000 < 1000 < 4000 25000 < 1000 < 1000 < 2000 < 1000 < 2000 < 2000 < 1000 < 2000 < 20000 < 1000 2800 < 3000 < 100005/01/99 TB 08189 < 10000 < 500 < 500 < 500 < 2000 13000 < 500 < 500 < 1000 < 500 < 1000 < 1000 < 500 < 1000 < 10000 < 500 1800 < 1500 < 50006/09/99 TB 08616 < 10000 < 500 < 500 < 500 < 2000 16000 < 500 < 500 < 1000 < 500 < 1000 < 1000 < 500 < 1000 < 10000 < 500 J 870 < 1500 < 50007/06/99 TB 08898 < 10000 < 500 < 500 < 500 < 2000 D 28000 < 500 < 500 < 1000 < 500 < 1000 < 1000 < 500 < 1000 < 10000 < 500 4000 < 1500 < 50008/06/99 TB 09162 < 1000 < 500 < 500 < 500 < 500 20000 < 500 < 500 J 140 < 500 < 5000 < 500 < 500 < 500 < 10000 < 500 3100 < 500 J 27009/08/99 TB 09609 < 400 < 200 < 200 < 200 < 200 7500 < 200 < 200 < 200 < 200 < 2000 < 200 < 200 < 200 < 4000 < 200 1920 < 200 J 26010/15/99 TB 10058 690 < 200 < 200 < 200 < 200 8800 < 200 < 200 < 200 < 200 < 2000 < 200 < 200 < 200 < 4000 < 200 1300 < 200 J 14011/17/99 TB 10485 640 < 50 < 50 < 50 < 50 1800 < 50 < 50 < 50 < 50 < 500 < 50 < 50 < 50 < 1000 < 50 < 50 < 50 J 50

12/11/99 TB 10707 520 < 50 < 50 < 50 < 50 1650 < 50 < 50 < 50 < 50 < 500 < 50 < 50 < 50 < 1000 < 50 < 50 < 50 < 50

01/11/00 TB 10907 540 < 50 < 50 < 50 < 50 D 2700 < 50 < 50 < 50 < 50 < 500 < 50 < 50 < 50 < 1000 < 50 440 < 50 J 60

02/06/00 TB 11125 1370 < 100 < 100 < 100 < 100 D 4690 < 100 < 100 < 100 < 100 < 1000 < 100 < 100 < 100 < 2000 < 100 560 < 100 350

03/04/00 TB 11299 < 400 < 200 < 200 < 200 < 200 5300 < 200 < 200 < 200 < 200 < 2000 < 200 < 200 < 200 < 4000 < 200 1200 < 200 J 140

04/07/00 TB 11524 1500 < 200 < 200 < 200 < 200 4200 < 200 < 200 < 200 < 200 < 2000 < 200 < 200 < 200 < 4000 < 200 280 < 200 J 8005/13/00 TB 11754 980 < 25 < 25 < 25 < 25 D 930 < 25 < 25 < 25 < 25 < 250 < 25 < 25 < 25 < 500 < 25 41 < 25 28507/08/00 TB 12128 660 < 25 < 25 < 25 < 25 D 1700 < 25 < 25 < 25 < 25 < 250 < 25 < 25 < 25 < 500 < 25 J 14 < 25 22010/06/00 TB 12731 340 < 50 < 50 < 50 < 50 2000 < 50 < 50 < 50 < 50 < 500 < 50 < 50 < 50 < 1000 < 50 < 50 < 50 < 50

02/19/01 TB 13827 600 < 5 < 5 < 5 < 5 620 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 J 4 < 5 5105/02/01 TB 14305 360 < 20 < 20 < 20 < 20 D 880 < 20 < 20 < 20 < 20 < 200 < 20 < 20 < 20 < 400 < 20 < 20 < 20 7208/22/01 TB 15073 480 < 25 < 25 < 25 < 25 840 < 25 < 25 J 18 < 25 < 250 < 25 < 25 < 25 < 500 < 25 < 25 < 25 5511/03/01 TB 15486 370 < 13 < 13 < 13 < 13 240 < 13 < 13 < 13 < 13 < 125 < 13 < 13 < 13 < 250 < 13 < 13 < 13 35

02/07/02 TB 16367 410 < 10 < 10 < 10 < 10 330 < 10 < 10 J 3 < 10 < 100 < 10 < 10 < 10 < 100 < 10 22 < 10 4005/17/02 TB 17034 D 250 < 5 < 5 < 5 < 5 170 < 5 < 5 J 1 < 5 < 50 < 5 < 5 < 5 < 100 < 5 J 2 < 5 3408/03/02 TB 17607 280 < 10 < 10 < 10 < 10 D 800 < 10 < 10 J 5 < 10 < 100 < 10 < 10 < 10 < 200 < 10 J 7 < 10 80

02/06/03 TB 18592 220 < 10 < 10 < 10 < 10 280 < 10 < 10 < 10 < 10 < 100 < 10 < 10 < 10 470 < 10 < 10 < 10 3204/15/03 TB 19090 216 < 20 < 20 < 20 < 60 712 < 20 < 20 < 20 < 20 < 80 < 16 < 20 < 20 < 200 < 20 < 20 < 8 3605/13/03 TB 19274 284 < 25 < 25 < 25 < 75 830 < 25 < 25 < 25 < 25 < 100 < 20 < 25 < 25 < 250 < 25 < 25 < 10 5106/13/03 TB 19391 132 < 10 < 10 < 10 < 30 390 < 10 < 10 < 10 < 10 < 40 < 8 < 10 < 10 < 100 < 10 < 10 < 4 < 1007/07/03 TB 19450 224 < 10 < 10 < 10 < 30 534 < 10 < 10 < 10 < 10 < 40 < 8 < 10 < 10 < 100 < 10 < 10 < 4 44

08/27/03 TB 19764 176 < 10 < 10 < 10 < 30 288 < 10 < 10 < 10 < 10 < 40 < 8 < 10 < 10 < 100 < 10 < 10 < 4 20

09/11/03 TB 19800 131 < 5 < 5 < 5 < 15 223 < 5 < 5 < 5 < 5 < 4 < 5 < 5 74 < 5 < 5 < 2 23

10/10/03 TB 19894 14 < 5 < 5 < 5 < 15 468 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 73 < 5 < 5 < 2 6

11/14/03 TB 20031 66 < 10 < 10 < 10 < 30 1070 < 10 < 10 < 10 < 10 < 40 < 8 < 10 < 10 < 100 < 10 < 10 < 4 32

12/04/03 TB 20125 840 < 20 < 20 < 20 < 60 4730 < 20 < 20 < 20 < 20 < 80 < 16 < 20 < 20 < 200 < 20 48 < 8 15612/15/03 TB 20178 112 < 40 < 40 < 40 < 120 1590 < 40 < 40 < 40 < 40 < 160 < 32 < 40 < 40 < 400 < 40 < 40 < 16 J 24

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 246 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

FW-019JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: Office Trailer

02/20/04 TB 20444 183 < 20 < 20 < 20 < 60 1850 < 20 < 20 < 20 < 20 < 80 < 16 < 20 < 20 < 200 < 20 < 20 < 8 4504/09/04 TB 20664 255 < 50 < 50 < 50 < 150 2230 < 50 < 50 < 50 < 50 < 200 < 40 < 50 < 50 < 500 < 50 < 50 < 20 J 2105/21/04 TB 20766 57 < 50 < 50 < 50 < 150 2520 < 50 < 50 < 50 < 50 < 200 < 40 < 50 < 50 < 500 < 50 < 50 < 20 J 3206/24/04 TB 20804 24 < 5 < 5 < 5 < 15 60 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 807/22/04 TB 20881 85 < 5 < 5 < 5 < 15 2350 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 228 < 5 9 < 2 3809/15/04 TB 21209 6 < 5 < 5 < 5 < 15 63 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 104 < 5 < 5 < 2 < 510/18/04 TB 21327 8 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 511/18/04 TB 21472 29 < 5 < 5 < 5 < 15 90 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 179 < 5 < 5 < 2 1212/07/04 TB 21535 7 < 5 < 5 < 5 < 15 77 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

01/14/05 TB 21805 < 25 < 25 < 25 < 25 < 75 850 < 25 < 25 < 25 J 29 < 100 < 20 < 25 < 25 < 250 < 25 < 25 < 10 < 25

02/15/05 TB 22044 < 25 < 25 < 25 < 25 < 75 568 < 25 < 25 < 25 < 25 < 100 < 20 < 25 < 25 < 250 < 25 < 25 < 10 < 2505/12/05 TB 22491 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 247 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

FW-021JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: Office Trailer

01/30/99 TB 07324 J 150 < 25 < 25 < 25 < 100 600 < 25 < 25 J 14 < 25 < 50 < 50 < 25 < 50 < 500 < 25 240 < 75 J 1803/11/99 TB 07737 < 2000 < 100 < 100 < 100 < 400 D 6300 < 100 < 100 J 88 < 100 < 200 < 200 < 100 < 200 < 2000 < 100 2100 < 300 J 20005/01/99 TB 08192 < 4000 < 200 < 200 < 200 < 800 4500 < 200 < 200 < 400 < 200 < 400 < 400 < 200 < 400 < 4000 < 200 1400 < 600 J 7006/09/99 TB 08618 J 50 < 5 < 5 < 5 < 20 D 250 < 5 < 5 < 10 < 5 < 10 < 10 < 5 < 10 < 100 < 5 86 < 15 6407/07/99 TB 08909 404 < 10 < 10 < 10 < 40 450 < 10 < 10 < 20 < 10 < 20 < 20 < 10 < 20 < 200 < 10 170 < 30 15008/05/99 TB 09144 380 < 10 < 10 < 10 < 10 D 1400 < 10 < 10 < 10 < 10 < 100 < 10 < 10 < 10 < 200 < 10 47 < 10 17009/08/99 TB 09611 < 100 < 50 < 50 < 50 < 50 880 < 50 < 50 < 50 < 50 < 500 < 50 < 50 < 50 < 1000 < 50 < 50 < 50 < 5010/15/99 TB 10060 910 < 50 < 50 < 50 < 50 D 2800 < 50 < 50 < 50 < 50 < 500 < 50 < 50 < 50 < 1000 < 50 J 44 < 50 17011/17/99 TB 10487 140 < 13 < 13 < 13 < 13 560 < 13 < 13 < 13 < 13 < 125 < 13 < 13 < 13 < 250 < 13 < 13 < 13 4812/11/99 TB 10709 400 < 13 < 13 < 13 < 13 510 < 13 < 13 < 13 < 13 < 125 < 13 < 13 < 13 < 250 < 13 < 13 < 13 50

01/11/00 TB 10908 230 < 13 < 13 < 13 < 13 D 420 < 13 < 13 < 13 < 13 < 125 < 13 < 13 < 13 < 250 < 13 < 13 < 13 < 1303/04/00 TB 11300 110 < 10 < 10 < 10 < 10 D 450 < 10 < 10 < 10 < 10 < 100 < 10 < 10 < 10 D 7100 < 10 16 < 10 27

04/07/00 TB 11526 320 < 25 < 25 < 25 < 25 360 < 25 < 25 < 25 < 25 < 250 < 25 < 25 < 25 2700 < 25 < 25 < 25 J 15

05/12/00 TB 11740 110 < 10 < 10 < 10 < 10 430 < 10 < 10 < 10 < 10 < 100 < 10 < 10 < 10 < 200 < 10 68 < 10 J 18

07/08/00 TB 12129 < 20 < 10 < 10 < 10 < 10 450 < 10 < 10 < 10 < 10 < 100 < 10 < 10 < 10 < 200 < 10 140 < 10 J 2010/06/00 TB 12733 200 < 50 < 50 < 50 < 50 D 7100 < 50 < 50 180 < 50 < 500 < 50 < 50 < 50 < 1000 < 50 D 2500 < 50 59012/07/00 TB 13360 < 40 < 20 < 20 < 20 < 20 530 < 20 < 20 < 20 < 20 < 200 < 20 < 20 < 20 < 400 < 20 63 < 20 J 16

01/06/01 TB 13534 500 < 20 < 20 < 20 < 20 D 700 < 20 < 20 28 < 20 < 200 < 20 < 20 < 20 < 400 < 20 360 < 20 8002/25/01 TB 13908 550 < 10 < 10 < 10 < 10 360 < 10 < 10 < 10 < 10 < 100 < 10 < 10 < 10 < 200 < 10 23 < 10 J 1405/04/01 TB 14337 580 < 10 < 10 J 10 < 10 D 360 < 10 18 < 10 < 10 < 100 < 10 < 10 < 10 < 200 < 10 23 < 10 10408/22/01 TB 15075 310 < 10 < 10 < 10 < 10 130 < 10 < 10 < 10 < 10 < 100 < 10 < 10 < 10 < 200 < 10 < 10 < 10 < 1011/03/01 TB 15488 61 < 5 < 5 < 5 < 5 47 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 512/17/01 TB 15983 28 < 5 < 5 < 5 < 5 12 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 J 1

02/07/02 TB 16369 28 < 5 < 5 < 5 < 5 70 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 J 1 < 5 J 205/17/02 TB 17036 21 < 5 < 5 < 5 < 5 15 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 J 108/03/02 TB 17609 28 < 5 < 5 < 5 < 5 20 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 J 2

02/06/03 TB 18594 86 < 5 < 5 < 5 < 5 47 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 J 805/13/03 TB 19278 218 < 5 < 5 < 5 < 15 181 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 2608/27/03 TB 19754 110 < 5 < 5 < 5 < 15 313 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 1711/17/03 TB 20043 24 < 5 < 5 < 5 < 15 318 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 J 2

02/20/04 TB 20446 6 < 5 < 5 < 5 < 15 55 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 509/15/04 TB 21211 6 < 5 < 5 < 5 < 15 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

02/15/05 TB 22055 14 < 5 < 5 < 5 < 15 18 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 J 2

05/12/05 TB 22492 33 < 5 < 5 < 5 < 15 6 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 248 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

FW-026JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: Office Trailer

03/17/99 TB 07781 < 100 25 < 5 < 5 < 20 17 < 5 < 5 < 10 < 5 < 10 < 10 < 5 < 10 < 100 < 5 J 3 < 15 < 505/02/99 TB 08203 < 100 38 < 5 < 5 < 20 26 < 5 J 1 < 10 < 5 < 10 < 10 < 5 < 10 < 100 < 5 J 5 < 15 < 506/10/99 TB 08623 < 100 32 < 5 < 5 < 20 < 5 < 5 < 5 < 10 < 5 < 10 < 10 < 5 < 10 < 100 < 5 < 10 J 5 < 507/07/99 TB 08914 < 100 18 < 5 < 5 < 20 < 5 < 5 < 5 < 10 < 5 < 10 < 10 < 5 < 10 < 100 < 5 < 10 < 15 < 508/05/99 TB 09149 < 10 8 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 509/08/99 TB 09616 < 10 7 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 510/15/99 TB 10065 < 10 8 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 511/17/99 TB 10492 < 10 7 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 512/10/99 TB 10699 38 8 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 10

02/06/00 TB 11129 < 10 8 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 5

05/12/00 TB 11745 < 40 22 < 20 < 20 < 20 420 < 20 < 20 < 20 < 20 < 200 < 20 < 20 < 20 < 400 < 20 98 < 20 < 2010/09/00 TB 12741 < 10 9 < 5 < 5 < 5 141 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 40 < 5 < 5

01/06/01 TB 13538 1100 < 10 < 10 < 10 < 10 340 < 10 < 10 J 10 < 10 < 100 < 10 < 10 < 10 < 200 < 10 180 < 10 J 16

03/01/01 TB 13963 250 < 5 < 5 < 5 < 5 D 1000 < 5 < 5 26 < 5 < 50 < 5 < 5 < 5 J 95 < 5 350 < 5 3505/04/01 TB 14339 1700 < 10 < 10 < 10 < 10 230 < 10 < 10 33 < 10 < 100 < 10 < 10 < 10 < 200 < 10 200 < 10 4608/22/01 TB 15080 23 6 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 511/03/01 TB 15493 < 10 6 < 5 < 5 < 5 J 2 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 5

02/09/02 TB 16377 22 5 < 5 < 5 < 5 9 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 J 2 < 5 J 105/18/02 TB 17051 < 10 J 5 < 5 < 5 6 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 J 39 < 5 < 5 < 5 < 5

02/06/03 TB 18599 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 5

02/20/04 TB 20451 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 1300 < 5 < 5 < 2 < 509/15/04 TB 21215 < 5 7 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 2220 < 5 < 5 < 2 < 5

02/15/05 TB 22058 14 < 5 < 5 < 5 < 15 1360 < 5 < 5 8 < 5 < 20 < 4 < 5 < 5 782 < 5 134 < 2 2603/08/05 TB 22245 159 < 40 < 40 < 40 < 120 6360 < 40 < 40 < 40 < 40 < 160 < 32 < 40 < 40 8220 < 40 387 < 16 J 4104/05/05 TB 22273 < 5 < 5 < 5 < 5 J 19 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 1270 < 5 < 5 < 2 < 5

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 249 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

FW-027JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: Office Trailer

03/17/99 TB 07782 < 100 6 < 5 < 5 < 20 D 230 < 5 < 5 J 7 < 5 < 10 < 10 < 5 < 10 < 100 < 5 150 < 15 2005/02/99 TB 08204 < 100 6 < 5 < 5 < 20 J 2 < 5 < 5 < 10 < 5 < 10 < 10 < 5 < 10 < 100 < 5 J 1 < 15 < 506/10/99 TB 08624 < 100 J 3 < 5 < 5 < 20 < 5 < 5 < 5 < 10 < 5 < 10 < 10 < 5 < 10 < 100 < 5 J 1 < 15 J 207/07/99 TB 08915 < 100 18 < 5 < 5 < 20 16 < 5 < 5 J 4 < 5 < 10 < 10 < 5 < 10 < 100 < 5 20 < 15 2108/05/99 TB 09150 < 10 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 509/08/99 TB 09617 < 10 15 < 5 < 5 < 5 14 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 14 < 5 2710/15/99 TB 10066 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 511/17/99 TB 10493 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 512/10/99 TB 10700 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 5

02/06/00 TB 11130 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 5

05/12/00 TB 11746 < 40 < 20 < 20 < 20 170 < 20 < 20 360 < 20 < 20 < 200 < 20 < 20 < 20 < 400 < 20 < 20 < 20 < 2010/09/00 TB 12742 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 5

03/01/01 TB 13964 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 505/04/01 TB 14340 440 < 5 < 5 < 5 < 5 99 < 5 < 5 10 < 5 < 50 < 5 < 5 < 5 < 100 < 5 75 < 5 J 1406/02/01 TB 14573 49 < 5 < 5 < 5 < 5 D 200 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 410 < 5 24 < 5 < 507/17/01 TB 14734 30 < 10 < 10 < 10 < 10 D 1900 < 10 < 10 < 10 < 10 < 100 < 10 < 10 < 10 J 80 < 10 69 < 10 < 1008/22/01 TB 15081 32 < 5 < 5 < 5 < 5 D 510 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 J 5 < 5 < 509/11/01 TB 15226 24 < 5 < 5 < 5 < 5 D 670 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 510/14/01 TB 15332 < 10 < 5 < 5 < 5 < 5 140 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 511/03/01 TB 15494 33 < 5 < 5 < 5 6 15 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 J 49 < 5 < 5 < 5 < 512/17/01 TB 15982 58 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 5

02/09/02 TB 16378 15 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 504/05/02 TB 16791 J 7 < 5 < 5 < 5 < 5 8 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 170 < 5 < 5 < 5 < 505/18/02 TB 17052 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 506/11/02 TB 17290 < 10 < 5 < 5 < 5 < 5 16 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 J 36 < 5 < 5 < 5 < 511/22/02 TB 18245 < 10 < 5 < 5 < 5 < 5 J 1 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 5

02/06/03 TB 18600 < 10 J 3 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 505/13/03 TB 19279 110 < 5 < 5 < 5 < 15 2320 < 5 < 5 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 104 < 2 1808/27/03 TB 19755 6 < 5 < 5 < 5 < 15 75 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 511/17/03 TB 20044 9 < 5 < 5 < 5 < 15 256 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 116 < 5 < 5 < 2 < 5

02/20/04 TB 20452 < 5 < 5 < 5 < 5 < 15 33 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 509/15/04 TB 21216 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 510/18/04 TB 21328 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 202 < 5 < 5 < 2 < 511/18/04 TB 21473 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 512/07/04 TB 21536 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

01/14/05 TB 21806 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 250 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

FW-027JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: Office Trailer

02/15/05 TB 22059 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 506/17/05 TB 22705 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 251 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

FW-037JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: Office Trailer

06/27/01 TB 14662 13 < 5 < 5 < 5 < 5 180 < 5 < 5 6 < 5 < 50 < 5 < 5 < 5 < 100 < 5 70 < 5 J 707/06/01 TB 14735 J 8 < 5 < 5 < 5 < 5 6 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 230 < 5 < 5 < 5 < 507/11/01 TB 14747 19 < 5 < 5 < 5 < 5 27 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 507/25/01 TB 14822 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 508/01/01 TB 14850 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 508/22/01 TB 15082 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 509/11/01 TB 15227 J 6 < 5 < 5 < 5 < 5 12 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 510/14/01 TB 15333 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 511/03/01 TB 15504 12 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 512/17/01 TB 15981 51 < 5 < 5 < 5 < 5 98 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 12

02/07/02 TB 16374 33 < 5 < 5 < 5 < 5 45 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 J 4 < 5 J 5

04/05/02 TB 16792 65 < 5 < 5 < 5 < 5 55 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 J 5

05/17/02 TB 17040 61 < 5 < 5 < 5 < 5 32 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 506/11/02 TB 17291 14 < 5 < 5 < 5 < 5 34 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 508/03/02 TB 17611 43 < 5 < 5 < 5 < 5 71 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 J 8

02/06/03 TB 18602 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 504/15/03 TB 19091 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 505/13/03 TB 19275 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 506/13/03 TB 19392 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 507/07/03 TB 19451 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 508/26/03 TB 19746 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 509/11/03 TB 19801 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 510/10/03 TB 19896 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 81 < 5 < 5 < 2 < 511/14/03 TB 20032 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 512/04/03 TB 20127 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

02/20/04 TB 20454 < 5 < 5 < 5 < 5 < 15 14 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 509/15/04 TB 21217 6 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 510/18/04 TB 21329 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 511/18/04 TB 21474 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 512/07/04 TB 21537 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

01/14/05 TB 21807 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 502/15/05 TB 22061 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 504/05/05 TB 22269 6 < 5 < 5 < 5 < 15 9 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 252 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

FW-038JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: Office Trailer

09/16/02 TB 17926 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 510/14/02 TB 18051 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 511/22/02 TB 18246 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 5

02/06/03 TB 18603 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 505/13/03 TB 19280 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 508/26/03 TB 19751 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 511/14/03 TB 20034 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 65 < 5 < 5 < 2 < 5

02/20/04 TB 20455 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 509/16/04 TB 21235 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

10/18/04 TB 21330 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 511/18/04 TB 21475 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 512/07/04 TB 21538 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

01/14/05 TB 21808 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 502/16/05 TB 22088 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 505/12/05 TB 22495 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 253 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

FW-039JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: Office Trailer

09/16/02 TB 17927 J 1 < 5 < 5 < 5 < 5 J 2 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 J 19 < 5 J 1 < 5 1110/14/02 TB 18052 33 < 5 < 5 < 5 < 5 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 J 4 < 5 < 511/22/02 TB 18247 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 5

02/06/03 TB 18604 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 505/13/03 TB 19281 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 508/26/03 TB 19747 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 511/14/03 TB 20035 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

02/20/04 TB 20456 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 509/16/04 TB 21236 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

10/18/04 TB 21331 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 511/18/04 TB 21476 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 512/07/04 TB 21539 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

01/14/05 TB 21809 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 502/16/05 TB 22089 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 505/12/05 TB 22496 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 254 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

FW-040JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: Office Trailer

09/16/02 TB 17928 J 2 < 5 < 5 < 5 < 5 J 4 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 J 1 < 5 J 710/14/02 TB 18053 180 < 5 < 5 < 5 < 5 97 < 5 < 5 J 2 < 5 < 50 < 5 < 5 < 5 < 100 < 5 44 < 5 22611/22/02 TB 18248 J 8 < 5 < 5 < 5 < 5 29 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 11 < 5 12

02/06/03 TB 18605 18 < 5 < 5 < 5 < 5 13 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 J 205/19/03 TB 19291 77 < 5 < 5 < 5 < 15 155 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 20 < 2 3308/26/03 TB 19748 14 < 5 < 5 < 5 < 15 26 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 1211/14/03 TB 20036 14 < 5 < 5 < 5 < 15 42 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 9 < 2 19

02/20/04 TB 20457 < 5 < 5 < 5 < 5 < 15 16 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 809/16/04 TB 21237 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

02/16/05 TB 22090 24 < 5 < 5 < 5 < 15 27900 < 5 < 5 151 < 5 < 20 < 4 < 5 < 5 < 50 < 5 4280 < 2 186

03/08/05 TB 22246 < 500 < 500 < 500 < 500 < 1500 19100 < 500 < 500 < 500 < 500 < 2000 < 400 < 500 < 500 < 5000 < 500 2650 < 200 < 50005/12/05 TB 22497 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 255 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

FW-041JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: Office Trailer

09/16/02 TB 17929 J 2 < 5 < 5 < 5 < 5 J 3 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 J 710/14/02 TB 18054 J 6 < 5 < 5 < 5 < 5 14 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 J 4 < 5 < 511/22/02 TB 18249 < 10 < 5 < 5 < 5 11 570 < 5 < 5 5 < 5 < 10 < 5 < 5 < 5 < 100 < 5 160 < 5 J 10

02/06/03 TB 18606 J 7 < 5 < 5 < 5 < 5 23 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 505/13/03 TB 19282 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 508/26/03 TB 19749 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 511/14/03 TB 20037 < 5 < 5 < 5 < 5 < 15 12 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

02/20/04 TB 20458 9 < 5 < 5 < 5 < 15 172 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 509/16/04 TB 21238 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

10/18/04 TB 21332 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 511/18/04 TB 21477 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 512/07/04 TB 21540 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

01/14/05 TB 21810 < 5 < 5 < 5 < 5 < 15 17700 < 5 < 5 J 149 < 5 < 20 < 4 < 5 < 5 < 50 < 5 2960 < 2 191

02/16/05 TB 22091 < 2500 < 2500 < 2500 < 2500 < 7500 86200 < 2500 < 2500 < 2500 < 2500 < 10000 < 2000 < 2500 < 2500 < 25000 < 2500 13200 < 1000 < 250003/08/05 TB 22247 < 1000 < 1000 < 1000 < 1000 < 3000 44500 < 1000 < 1000 < 1000 < 1000 < 4000 < 800 < 1000 < 1000 < 10000 < 1000 5290 < 400 < 100004/05/05 TB 22275 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 256 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

FW-042JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: Office Trailer

09/16/02 TB 17930 J 3 < 5 < 5 < 5 < 5 50 < 5 < 5 J 1 < 5 < 50 < 5 < 5 < 5 < 100 < 5 10 < 5 3210/14/02 TB 18055 55 < 5 < 5 < 5 < 5 22 < 5 < 5 J 2 < 5 < 50 < 5 < 5 < 5 < 100 < 5 8 < 5 2811/22/02 TB 18250 51 < 5 < 5 < 5 < 5 D 330 < 5 < 5 7 < 5 < 50 < 5 < 5 < 5 < 100 < 5 150 < 5 46

02/06/03 TB 18607 18 < 5 < 5 < 5 < 5 24 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 J 305/13/03 TB 19283 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 508/26/03 TB 19750 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 511/14/03 TB 20038 10 < 5 < 5 < 5 < 15 12 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 24

02/20/04 TB 20459 6 < 5 < 5 < 5 < 15 28 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 504/09/04 TB 20665 5 < 5 < 5 < 5 < 15 21 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

05/21/04 TB 20768 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 506/24/04 TB 20806 < 5 < 5 < 5 < 5 < 15 62 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 507/22/04 TB 20883 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 509/16/04 TB 21239 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 469 < 5 < 5 < 2 < 5

02/16/05 TB 22092 < 2500 < 2500 < 2500 < 2500 < 7500 136000 < 2500 < 2500 < 2500 < 2500 < 10000 < 2000 < 2500 < 2500 < 25000 < 2500 27400 < 1000 J 117003/08/05 TB 22248 < 2500 < 2500 < 2500 < 2500 < 7500 106000 < 2500 < 2500 < 2500 < 2500 < 10000 < 2000 < 2500 < 2500 < 25000 < 2500 21300 < 1000 J 118005/12/05 TB 22499 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 257 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

HW-005JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: Office Trailer

12/12/97 TB 03457 < 25 < 25 < 25 < 50 430 < 25 J 16 40 < 50 < 25 E 1300 < 25 130 < 50 35

02/01/98 TB 03724 < 1000 < 1000 < 1000 < 4000 9100 < 1000 < 2000 < 1000 < 2000 < 2000 < 1000 < 2000 < 1000 J 1600 < 3000 < 100003/15/98 TB 03996 < 250 < 250 < 250 < 500 5000 < 250 < 250 < 250 < 500 < 250 < 2500 < 250 1700 < 500 < 25005/08/98 TB 04496 < 100 < 100 < 100 < 100 J 150 2700 < 100 < 100 < 100 < 200 < 100 3500 < 100 880 < 200 < 10007/09/98 TB 05006 < 200 < 100 < 100 < 100 < 400 2300 < 100 < 100 J 48 < 100 < 200 < 200 < 100 < 200 2600 < 100 1100 < 300 11009/09/98 TB 05769 J 90 < 100 < 100 < 100 < 400 1100 < 100 < 100 J 44 < 100 < 200 < 200 < 100 < 200 2800 < 100 470 < 300 J 9810/08/98 TB 06097 4700 < 50 < 50 < 50 < 200 D 620 < 50 < 50 540 < 50 < 100 < 100 < 50 < 100 18000 < 50 E 2500 < 150 140011/08/98 TB 06472 J 980 < 50 < 50 < 50 < 200 660 < 50 < 50 J 63 < 50 < 100 < 100 < 50 < 100 2400 < 50 330 < 150 J 190012/04/98 TB 06862 J 80 < 100 < 100 < 100 < 400 480 < 100 < 100 < 200 < 100 < 200 < 200 < 100 < 200 J 1800 < 100 J 130 < 300 J 56

01/04/99 TB 07117 J 250 < 13 < 13 < 13 < 50 370 < 13 < 13 J 20 < 13 < 25 < 25 < 13 < 25 1600 < 13 120 < 38 140

02/15/99 TB 07511 590 < 25 < 25 < 25 < 100 630 < 25 < 25 82 < 25 < 50 < 50 J 10 < 50 < 500 < 25 350 < 75 300

05/04/99 TB 08221 < 2000 < 100 < 100 < 100 < 400 D 5600 < 100 < 100 380 < 100 < 200 < 200 < 100 < 200 < 2000 < 100 1500 < 300 220

08/06/99 TB 09163 < 400 < 200 < 200 < 200 < 200 6700 < 200 < 200 < 200 < 200 < 2000 < 200 < 200 < 200 < 4000 < 200 240 < 200 < 20011/18/99 TB 10499 250 < 5 < 5 < 5 < 5 D 820 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 1500 < 5 38 < 5 47

01/15/00 TB 10928 900 < 25 < 25 < 25 < 25 D 2700 < 25 < 25 110 < 25 < 250 < 25 < 25 < 25 < 500 < 25 < 25 < 25 5502/15/00 TB 11200 470 < 5 < 5 < 5 < 5 D 1880 < 5 < 5 110 < 5 < 50 < 5 < 5 < 5 650 < 5 7 < 5 6503/02/00 TB 11279 300 < 25 < 25 < 25 < 25 D 1300 < 25 < 25 73 < 25 < 250 < 25 < 25 < 25 < 500 < 25 < 25 < 25 J 3003/17/00 TB 11421 < 100 < 50 < 50 < 50 < 50 860 < 50 < 50 J 23 < 50 < 500 < 50 < 50 < 50 < 1000 < 50 < 50 < 50 < 5004/07/00 TB 11527 64 < 10 < 10 < 10 < 10 350 < 10 < 10 14 < 10 < 100 < 10 < 10 < 10 < 200 < 10 < 10 < 10 J 1005/01/00 TB 11618 27 < 5 < 5 < 5 < 5 87 < 5 < 5 J 2 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 J 205/11/00 TB 11736 170 < 5 < 5 < 5 < 5 D 200 < 5 < 5 26 < 5 < 50 < 5 < 5 < 5 880 < 5 < 5 < 5 1907/04/00 TB 12091 27 < 5 < 5 < 5 < 5 39 < 5 < 5 J 3 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 508/02/00 TB 12299 < 10 < 5 < 5 < 5 < 5 71 < 5 < 5 J 5 < 5 < 50 < 5 < 5 < 5 230 < 5 < 5 < 5 < 509/07/00 TB 12578 < 10 < 5 < 5 < 5 < 5 85 < 5 < 5 7 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 510/02/00 TB 12718 38 < 5 < 5 < 5 < 5 76 < 5 < 5 8 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 J 211/02/00 TB 13080 34 < 5 < 5 < 5 < 5 83 < 5 < 5 9 < 5 < 50 < 5 < 5 < 5 380 < 5 < 5 < 5 J 1012/04/00 TB 13353 < 10 < 5 < 5 < 5 < 5 75 < 5 < 5 9 < 5 < 50 < 5 < 5 < 5 2000 < 5 < 5 < 5 < 5

01/03/01 TB 13467 < 10 < 5 < 5 < 5 < 5 96 < 5 < 5 8 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 502/03/01 TB 13706 < 10 < 5 < 5 < 5 < 5 46 < 5 < 5 J 4 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 502/27/01 TB 13937 < 10 < 5 < 5 < 5 < 5 38 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 5

04/30/01 TB 14262 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 505/30/01 TB 14536 200 < 5 < 5 < 5 < 5 6 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 230 < 5 < 5 < 5 < 507/05/01 TB 14721 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 508/08/01 TB 14889 < 10 < 5 < 5 < 5 < 5 6 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 509/05/01 TB 15202 < 10 < 5 < 5 < 5 < 5 7 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 510/09/01 TB 15320 < 10 < 5 < 5 < 5 < 5 13 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 510/30/01 TB 15433 < 10 < 5 < 5 < 5 < 5 20 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 5

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 258 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

HW-005JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: Office Trailer

12/05/01 TB 15849 < 10 < 5 < 5 < 5 < 5 14 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 J 24 < 5 < 5 < 5 < 5

01/02/02 TB 16076 < 10 < 5 < 5 < 5 < 5 26 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 501/25/02 TB 16251 < 10 < 5 < 5 < 5 < 5 16 < 5 < 5 J 2 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 503/28/02 TB 16747 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 504/30/02 TB 16884 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 506/13/02 TB 17307 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 370 < 5 < 5 < 5 < 507/14/02 TB 17423 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 508/09/02 TB 17654 < 10 < 5 < 5 < 5 < 5 J 3 < 5 < 5 J 1 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 509/19/02 TB 17962 < 10 < 5 < 5 < 5 < 5 J 2 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 509/30/02 TB 17999 J 2 < 5 < 5 < 5 < 5 J 3 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 5

11/01/02 TB 18120 < 10 < 5 < 5 < 5 < 5 J 3 < 5 < 5 J 2 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 511/26/02 TB 18322 < 10 < 5 < 5 < 5 < 5 J 1 < 5 < 5 J 2 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 512/13/02 TB 18364 < 10 < 5 < 5 < 5 < 5 J 3 < 5 < 5 J 2 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 512/18/02 TB 18387 < 10 < 5 < 5 < 5 < 5 J 3 < 5 < 5 J 3 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 5

01/03/03 TB 18408 < 10 < 5 < 5 < 5 < 5 J 1 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 330 < 5 < 5 < 5 < 502/07/03 TB 18622 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 504/15/03 TB 19092 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 505/19/03 TB 19290 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 206/13/03 TB 19393 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 507/07/03 TB 19448 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 508/26/03 TB 19738 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 509/11/03 TB 19802 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 510/10/03 TB 19897 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 511/17/03 TB 20040 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 512/04/03 TB 20128 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

02/25/04 TB 20476 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 508/31/04 TB 21072 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

02/16/05 TB 22094 < 5 < 5 < 5 < 5 42 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 505/13/05 TB 22519 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 259 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

MW-009JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: Office Trailer

04/26/96 TB 01530 520 < 250 < 250 < 250 < 500 9100 < 250 < 250 < 250 < 500 < 250 < 250 240 < 500 < 250

02/02/97 TB 01619 < 5 < 5 < 5 < 10 85 < 5 < 5 < 5 < 10 < 5 < 50 < 5 8 < 10 105/05/97 TB 02097 22 < 10 < 10 < 1008/09/97 TB 02527 60 < 5 12 14.311/04/97 TB 03194 < 5 < 5 < 5 < 10 < 5 < 5 < 5 < 5 < 10 < 5 < 50 < 5 < 5 < 10 < 5

01/31/98 TB 03703 < 5 < 5 < 5 < 20 < 5 < 5 < 10 < 5 < 10 < 10 < 5 < 10 < 5 < 10 < 15 < 505/11/98 TB 04521 < 5 < 5 < 5 < 5 < 10 < 5 < 5 < 5 < 5 < 10 < 5 390 < 5 < 5 < 10 < 511/09/98 TB 06500 < 500 < 25 < 25 < 25 < 100 120 < 25 < 25 < 50 < 25 < 50 < 50 < 25 < 50 2100 < 25 J 10 < 75 < 25

01/04/99 TB 07118 < 100 < 5 < 5 < 5 < 20 < 5 < 5 < 5 < 10 < 5 < 10 < 10 < 5 < 10 100 < 5 < 10 < 15 < 5

02/15/99 TB 07518 140 < 5 < 5 < 5 100 D 570 < 5 < 5 J 7 < 5 < 10 < 10 < 5 < 10 D 950 < 5 D 420 < 15 48

08/06/99 TB 09164 < 50 < 25 < 25 < 25 < 25 880 < 25 < 25 < 25 < 25 < 250 < 25 < 25 < 25 < 500 < 25 110 < 25 < 25

02/27/01 TB 13927 < 10 < 5 < 5 < 5 < 5 8 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 508/21/01 TB 15052 < 10 < 5 < 5 5 < 5 200 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 120 < 5 25 < 5 < 5

02/22/02 TB 16525 < 10 < 5 < 5 < 5 < 5 30 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 6 < 5 J 105/21/02 TB 17064 < 10 < 5 < 5 < 5 < 5 19 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 J 3 < 5 < 508/08/02 TB 17642 < 10 < 5 < 5 < 5 < 5 D 640 < 5 < 5 15 < 5 < 50 < 5 < 5 < 5 710 < 5 180 < 5 21

02/27/03 TB 18808 < 10 < 5 < 5 < 5 < 5 J 3 < 5 < 5 < 5 < 5 < 50 J 3 < 5 < 5 < 100 < 5 < 5 < 5 < 505/20/03 TB 19296 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 208/26/03 TB 19740 < 5 < 5 < 5 < 5 < 15 26 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 124 < 5 7 < 2 J 211/17/03 TB 20045 30 < 5 < 5 < 5 < 15 278 < 5 < 5 6 < 5 < 20 < 4 < 5 < 5 263 < 5 36 < 2 J 6

02/25/04 TB 20478 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 508/31/04 TB 21073 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 510/18/04 TB 21333 < 5 < 5 < 5 < 5 < 15 24 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 61 < 5 < 5 < 2 < 511/18/04 TB 21478 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 512/08/04 TB 21582 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

01/14/05 TB 21811 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 502/16/05 TB 22095 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 505/12/05 TB 22500 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 260 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

MW-019JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: Office Trailer

04/26/96 TB 01535 < 10 < 5 < 5 < 5 < 10 < 5 < 5 < 5 3 < 10 < 5 < 5 < 5 < 10 < 5

02/02/97 TB 01616 < 5 < 5 < 5 < 10 < 5 < 5 < 5 < 5 < 10 < 5 < 50 < 5 < 5 < 10 < 508/09/97 TB 02528 < 5 < 5 < 5 11.811/09/97 TB 03238 < 5 < 5 < 5 < 10 < 5 < 5 < 5 < 5 < 10 < 5 J 13 < 5 < 5 < 10 < 5

01/31/98 TB 03704 < 5 < 5 < 5 < 20 J 2 < 5 < 10 < 5 < 10 < 10 < 5 < 10 < 5 < 10 < 15 < 505/11/98 TB 04522 < 5 < 5 < 5 < 5 J 5 < 5 < 5 < 5 < 5 < 10 < 5 < 50 < 5 < 5 < 10 < 507/10/98 TB 05007 < 10 < 5 < 5 < 5 < 20 < 5 < 5 < 5 < 10 < 5 < 10 < 10 < 5 < 10 < 50 < 5 < 10 < 15 < 1011/09/98 TB 06501 < 100 < 5 < 5 < 5 < 20 < 5 < 5 < 5 < 10 < 5 < 10 < 10 < 5 < 10 < 100 < 5 < 10 < 15 < 5

01/04/99 TB 07119 < 100 < 5 < 5 < 5 < 20 < 5 < 5 < 5 < 10 < 5 < 10 < 10 < 5 < 10 < 100 < 5 < 10 < 15 < 5

02/14/99 TB 07493 < 100 < 5 < 5 < 5 < 20 < 5 < 5 < 5 < 10 < 5 < 10 < 10 < 5 < 10 < 100 < 5 < 10 < 15 < 508/06/99 TB 09165 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 5

02/14/00 TB 11194 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 510/12/00 TB 12781 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 5

02/27/01 TB 13928 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 508/21/01 TB 15053 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 5

02/22/02 TB 16526 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 505/21/02 TB 17065 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 508/08/02 TB 17643 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 140 < 5 < 5 < 5 < 5

02/27/03 TB 18809 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 505/20/03 TB 19297 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 508/26/03 TB 19739 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 511/17/03 TB 20046 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

02/25/04 TB 20479 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 508/31/04 TB 21074 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

02/16/05 TB 22096 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 505/12/05 TB 22501 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 261 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

MW-039JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: Office Trailer

04/26/96 TB 01547 < 10 < 5 < 5 < 5 < 10 < 5 < 5 < 5 < 5 < 10 < 5 < 5 < 5 < 10 < 5

02/18/99 TB 07553 < 100 J 2 < 5 < 5 < 20 < 5 < 5 < 5 < 10 < 5 < 10 < 10 < 5 < 10 < 100 < 5 < 10 < 15 < 5

10/12/00 TB 12782 < 10 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 5

02/27/01 TB 13929 < 10 J 4 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 508/22/01 TB 15083 < 10 J 4 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 5

02/22/02 TB 16527 < 10 J 3 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 505/21/02 TB 17066 < 10 J 3 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 508/09/02 TB 17650 < 10 J 2 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 5

02/27/03 TB 18810 < 10 J 2 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 5

02/25/04 TB 20480 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 508/31/04 TB 21070 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 510/18/04 TB 21334 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 511/18/04 TB 21479 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 512/08/04 TB 21583 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

01/14/05 TB 21812 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 502/16/05 TB 22097 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 506/17/05 TB 22710 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 262 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

MW-042JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: Office Trailer

02/05/96 TB 01814 < 3330 < 1665 < 3330 57000 < 1665 < 3330 < 16650 4400 < 3330 < 166506/14/96 TB 01257 1300 < 500 < 500 < 500 < 1000 18000 < 500 < 500 690 < 1000 < 500 < 5000 < 500 2500 < 1000 < 50008/04/96 TB 00163 620 < 5 < 5 140 < 10 940 < 5 < 5 59 < 5 < 10 < 5 < 5 < 100 < 5 680 < 10 24009/08/96 TB 00367 < 250 < 250 < 250 < 420 16000 < 250 < 250 < 250 < 250 < 500 < 250 < 250 < 5000 < 250 2100 < 500 < 25010/06/96 TB 00525 < 500 < 500 < 500 < 1000 17000 < 500 < 500 < 500 < 1000 < 500 < 5000 < 500 2200 < 1000 < 50011/06/96 TB 00661 < 500 < 500 < 500 < 1000 11000 < 500 < 500 < 500 < 1000 < 500 < 5000 < 500 570 < 1000 < 50012/08/96 TB 00820 < 500 < 500 < 500 < 1000 7100 < 500 < 500 < 500 < 1000 < 500 < 5000 < 500 690 < 1000 < 500

01/08/97 TB 00974 < 250 < 250 < 250 < 500 4800 < 250 < 250 < 250 < 500 < 250 < 2500 < 250 400 < 500 < 25002/02/97 TB 01620 < 250 < 250 < 250 < 500 5300 < 250 < 250 < 250 < 500 < 250 8100 < 250 590 < 500 8004/06/97 TB 01955 < 250 < 250 < 250 < 500 6600 < 250 < 250 < 250 < 500 < 250 < 2500 < 250 1800 < 500 J 110

06/08/97 TB 02272 2500 < 500 220 < 50009/03/97 TB 02741 2400 < 50 470 < 5011/29/97 TB 03363 < 5 < 5 J 5 < 20 190 < 5 < 5 J 8 < 5 < 10 < 10 < 5 < 10 < 5 120 < 15 54

03/15/98 TB 04000 < 5 < 5 < 5 < 10 16 < 5 < 5 < 5 < 10 < 5 < 50 < 5 28 < 10 1506/03/98 TB 04687 < 5 < 5 < 5 < 20 D 320 < 5 < 5 < 10 < 5 < 10 < 10 < 5 < 10 460 < 5 19 < 15 J 1809/09/98 TB 05770 J 39 < 25 < 25 < 25 < 100 E 1500 < 25 < 25 J 9 < 25 < 50 < 50 < 25 < 50 < 250 < 25 74 < 75 J 1511/08/98 TB 06473 < 1000 < 50 < 50 < 50 < 200 1100 < 50 < 50 J 21 < 50 < 100 < 100 < 50 < 100 < 1000 < 50 290 < 150 J 2312/04/98 TB 06863 < 1000 < 50 < 50 < 50 < 200 560 < 50 < 50 < 100 < 50 < 100 < 100 < 50 < 100 < 1000 < 50 J 33 < 150 J 18

02/15/99 TB 07515 J 11 < 5 < 5 < 5 22 170 < 5 44 < 10 J 4 < 10 < 10 < 5 < 10 < 100 < 5 42 < 15 2905/04/99 TB 08222 < 100 < 5 < 5 < 5 < 20 83 < 5 32 < 10 < 5 < 10 < 10 < 5 < 10 < 100 < 5 17 < 15 2008/11/99 TB 09218 49 < 5 < 5 < 5 < 5 210 < 5 61 J 3 J 3 < 50 < 5 < 5 < 5 230 < 5 11 < 5 8711/18/99 TB 10496 17 < 5 < 5 < 5 < 5 23 < 5 30 < 5 < 5 < 50 < 5 < 5 < 5 J 80 < 5 6 < 5 23

05/11/00 TB 11737 < 10 < 5 < 5 < 5 < 5 6 < 5 9 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 510/12/00 TB 12784 < 10 < 5 < 5 < 5 < 5 13 < 5 16 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 5

02/28/01 TB 13942 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 504/30/01 TB 14263 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 508/21/01 TB 15054 13 < 5 < 5 < 5 < 5 17 < 5 67 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 511/03/01 TB 15498 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 5

02/21/02 TB 16515 < 10 < 5 < 5 < 5 < 5 < 5 < 5 6 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 5

05/21/02 TB 17067 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 508/09/02 TB 17652 < 10 < 5 < 5 < 5 < 5 J 4 < 5 J 2 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 5

02/27/03 TB 18812 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 508/27/03 TB 19759 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

02/25/04 TB 20482 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 509/16/04 TB 21240 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 598 < 5 < 5 < 2 < 5

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 263 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

MW-042JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: Office Trailer

10/18/04 TB 21335 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 511/18/04 TB 21480 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 512/08/04 TB 21584 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

01/14/05 TB 21813 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 502/16/05 TB 22098 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 505/13/05 TB 22521 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 264 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

MW-081JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: Office Trailer

05/01/96 TB 01585 27 < 50 < 50 < 50 < 100 1900 < 50 < 50 26 < 100 < 50 < 50 < 50 < 100 < 5008/04/96 TB 00167 47 < 25 < 25 < 25 < 50 600 < 25 < 25 < 25 39 < 50 < 25 < 25 < 500 < 25 < 11 < 50 < 2510/06/96 TB 00529 < 83 < 83 < 83 < 170 2000 < 83 < 83 < 83 < 170 < 83 < 830 < 83 110 < 170 < 8311/06/96 TB 00666 < 50 < 50 < 50 < 100 880 < 50 < 50 < 50 < 100 < 50 < 500 < 50 < 50 < 100 < 5012/08/96 TB 00816 < 50 < 50 < 50 < 100 1200 < 50 < 50 < 50 < 100 < 50 < 500 < 50 51 < 100 < 50

01/08/97 TB 00973 < 50 < 50 < 50 < 100 940 < 50 < 50 < 50 < 100 < 50 < 500 < 50 < 50 < 100 < 5002/02/97 TB 01617 < 50 < 50 < 50 < 100 1200 < 50 < 50 < 50 < 100 < 50 < 500 < 50 72 < 100 < 5004/06/97 TB 01945 < 50 < 50 < 50 < 100 1400 < 50 < 50 < 50 < 100 < 50 < 500 < 50 81 < 100 < 5005/05/97 TB 02096 1200 < 100 < 100 < 10006/08/97 TB 02273 980 < 10 100 < 10

09/03/97 TB 02742 1400 11 120 20

09/19/97 TB 02842 < 250 < 250 < 250 < 500 7000 < 250 < 250 < 250 < 500 < 250 12000 < 250 820 < 500 J 130

11/29/97 TB 03364 < 5 < 5 < 5 < 20 180 < 5 < 5 < 10 < 5 37 < 10 < 5 < 10 < 5 J 4 < 15 J 3

03/15/98 TB 03997 < 10 < 10 < 10 < 20 280 < 10 < 10 < 10 < 20 < 10 < 100 < 10 < 10 < 20 < 1006/03/98 TB 04698 < 5 < 5 < 5 < 20 12 < 5 < 5 < 10 < 5 < 10 < 10 < 5 < 10 E 2300 < 5 < 10 < 15 < 509/12/98 TB 05797 < 10 < 5 < 5 < 5 < 20 46 < 5 < 5 < 10 < 5 < 10 < 10 < 5 < 10 1900 < 5 < 10 < 15 < 511/08/98 TB 06477 < 100 < 5 < 5 < 5 < 20 6 < 5 < 5 < 10 < 5 < 10 < 10 < 5 < 10 1200 < 5 < 10 < 15 < 5

02/15/99 TB 07512 < 100 < 5 < 5 < 5 < 20 5 < 5 < 5 < 10 < 5 < 10 < 10 < 5 < 10 3000 < 5 < 10 < 15 < 505/04/99 TB 08223 < 100 < 5 < 5 < 5 < 20 J 1 < 5 < 5 < 10 < 5 < 10 < 10 < 5 < 10 D 2700 < 5 < 10 < 15 < 508/06/99 TB 09168 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 D 8700 < 5 < 5 < 5 < 511/18/99 TB 10495 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 D 8700 < 5 < 5 < 5 < 5

05/18/00 TB 11791 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 170 < 5 < 5 < 5 < 510/12/00 TB 12785 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 1400 < 5 < 5 < 5 < 5

02/27/01 TB 13931 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 160 < 5 < 5 < 5 < 504/30/01 TB 14264 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 508/21/01 TB 15056 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 D 4300 < 5 < 5 < 5 < 511/03/01 TB 15499 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 D 5500 < 5 < 5 < 5 < 5

02/21/02 TB 16512 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 D 3900 < 5 < 5 < 5 < 505/19/02 TB 17059 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 J 3 < 5 < 5 D 4800 < 5 < 5 < 5 < 5

08/08/02 TB 17645 30 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 J 3 < 5 < 5 D 5800 < 5 < 5 < 5 < 5

02/27/03 TB 18816 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 J 3 < 5 < 5 D 7700 < 5 < 5 < 5 < 508/27/03 TB 19760 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 3360 < 5 < 5 < 2 < 5

02/25/04 TB 20484 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 4420 < 5 < 5 < 2 < 509/17/04 TB 21254 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 2820 < 5 < 5 < 2 < 510/18/04 TB 21336 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 4370 < 5 < 5 < 2 < 5

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 265 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

MW-081JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: Office Trailer

11/18/04 TB 21481 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 6390 < 5 < 5 < 2 < 512/08/04 TB 21585 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 6710 < 5 < 5 < 2 < 5

01/14/05 TB 21814 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 7560 < 5 < 5 < 2 < 502/16/05 TB 22100 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 4520 < 5 < 5 < 2 < 506/17/05 TB 22712 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 810 < 5 < 5 < 2 < 5

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 266 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

MW-084JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: Office Trailer

05/01/96 TB 01589 < 10 < 5 < 5 < 5 < 10 < 5 < 5 3 3 < 10 < 5 < 5 < 5 < 10 < 5

09/19/97 TB 02841 < 250 < 250 < 250 < 500 6800 < 250 < 250 < 250 < 500 < 250 < 2500 < 250 790 < 500 J 14010/30/97 TB 03171 < 5 < 5 < 5 < 10 < 5 < 5 < 5 < 5 < 10 < 5 < 50 < 5 < 5 < 10 < 511/30/97 TB 03398 < 5 < 5 < 5 < 10 < 5 < 5 < 5 < 5 < 10 < 5 < 50 < 5 < 5 < 10 < 511/30/97 TB 03399 < 5 < 5 < 5 J 6 < 5 < 5 < 5 < 5 < 10 < 5 < 50 < 5 < 5 < 10 < 512/01/97 TB 03401 < 5 < 5 < 5 < 10 < 5 < 5 < 5 < 5 < 10 < 5 < 50 < 5 < 5 < 10 < 512/01/97 TB 03400 < 5 < 5 < 5 < 10 < 5 < 5 < 5 < 5 < 10 < 5 < 50 < 5 < 5 < 10 < 512/01/97 TB 03402 < 5 < 5 < 5 < 10 < 5 < 5 < 5 J 2 < 10 < 5 < 50 < 5 J 4 < 10 < 512/02/97 TB 03403 < 5 < 5 < 5 < 10 < 5 < 5 < 5 < 5 < 10 < 5 < 50 < 5 < 5 < 10 < 5

03/16/98 TB 04010 < 5 < 5 < 5 J 8 15 < 5 < 5 < 5 < 10 < 5 < 50 < 5 < 5 < 10 < 508/10/98 TB 05466 < 10 < 5 < 5 < 5 < 20 < 5 < 5 < 5 < 10 < 5 < 10 < 10 < 5 < 10 < 50 < 5 < 10 < 15 < 511/09/98 TB 06497 < 100 < 5 < 5 < 5 < 20 < 5 < 5 < 5 < 10 < 5 < 10 < 10 < 5 < 10 < 100 < 5 < 10 < 15 < 5

02/15/99 TB 07506 < 100 < 5 < 5 < 5 < 20 < 5 < 5 < 5 < 10 < 5 < 10 < 10 < 5 < 10 330 < 5 < 10 < 15 < 508/06/99 TB 09171 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 5

10/12/00 TB 12786 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 5

02/27/01 TB 13933 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 508/21/01 TB 15058 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 5

02/21/02 TB 16513 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 505/19/02 TB 17061 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 508/08/02 TB 17647 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 5

02/27/03 TB 18818 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 508/27/03 TB 19761 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

02/25/04 TB 20485 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 509/17/04 TB 21255 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 510/18/04 TB 21337 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 512/08/04 TB 21586 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

01/14/05 TB 21815 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 502/16/05 TB 22101 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

05/13/05 TB 22523 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 267 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

MW-088JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: Office Trailer

06/13/96 TB 01261 62 < 500 < 500 < 500 < 1000 9400 < 500 < 500 < 500 < 1000 < 500 < 5000 < 500 900 < 1000 < 50006/14/96 TB 01326 < 500 < 500 < 500 < 1000 12000 < 500 < 500 700 < 1000 < 500 < 5000 < 500 980 < 1000 < 500

02/02/97 TB 01623 < 2500 < 2500 < 2500 < 5000 46000 < 2500 < 2500 < 2500 < 5000 < 2500 < 25000 < 2500 4400 < 5000 < 250004/06/97 TB 01954 < 2500 < 2500 < 2500 < 5000 39000 < 2500 < 2500 < 2500 < 5000 < 2500 < 25000 < 2500 4100 < 5000 < 250006/28/97 TB 02348 42000 < 500 5600 < 50009/30/97 TB 02929 < 1000 < 1000 < 1000 < 2000 34000 < 1000 < 1000 < 1000 < 2000 < 1000 < 10000 < 1000 4700 < 2000 < 1000

01/01/98 TB 03556 < 5000 < 5000 < 5000 < 20000 56000 < 5000 < 5000 < 10000 < 5000 < 10000 < 10000 < 5000 < 10000 < 5000 22000 < 15000 < 500003/15/98 TB 03999 < 500 < 500 < 500 < 1000 8800 < 500 J 250 < 500 < 1000 < 500 < 5000 < 500 4500 < 1000 < 50004/04/98 TB 04206 < 500 < 500 < 500 < 500 1300 7800 < 500 < 500 < 500 < 1000 < 500 25000 < 500 3300 < 1000 J 390

07/09/98 TB 05009 280 < 100 < 100 < 100 < 400 D 8800 < 100 < 100 J 68 < 100 < 200 < 200 < 100 < 200 < 1000 < 100 960 < 300 340

08/09/98 TB 05449 1000 < 50 < 50 < 50 < 200 D 2900 < 50 < 50 J 30 < 50 < 100 < 100 < 50 < 100 < 500 < 50 230 < 150 200

09/09/98 TB 05766 < 500 < 250 < 250 < 250 < 1000 11000 < 250 < 250 J 77 < 250 < 500 < 500 < 250 < 500 < 2500 < 250 500 < 750 J 160

10/08/98 TB 06099 J 340 < 250 < 250 < 250 < 1000 9800 < 250 < 250 J 59 < 250 < 500 < 500 < 250 < 500 < 2500 < 250 J 320 < 750 J 50

11/08/98 TB 06474 J 400 < 250 < 250 < 250 < 1000 8500 < 250 < 250 J 66 < 250 < 500 < 500 < 250 < 500 < 5000 < 250 570 < 750 J 7612/02/98 TB 06845 J 50 < 250 < 250 J 200 < 1000 5400 < 250 < 250 < 500 < 250 < 500 < 500 < 250 < 500 < 5000 < 250 J 89 < 750 < 250

01/04/99 TB 07121 J 300 < 250 < 250 < 250 < 1000 7900 < 250 < 250 < 500 < 250 < 500 < 500 < 250 < 500 < 5000 < 250 620 < 750 J 30002/14/99 TB 07491 < 5000 < 250 < 250 < 250 < 1000 D 13000 < 250 < 250 < 500 < 250 < 500 < 500 < 250 < 500 < 5000 < 250 J 490 < 750 J 17003/29/99 TB 07927 < 5000 < 250 < 250 < 250 < 1000 5500 < 250 < 250 < 500 < 250 < 500 < 500 < 250 < 500 < 5000 < 250 540 < 750 J 7005/04/99 TB 08225 < 2500 < 125 < 125 < 125 < 500 3800 < 125 < 125 < 250 < 125 < 250 < 250 < 125 < 250 < 2500 < 125 J 230 < 375 < 12508/06/99 TB 09173 1000 < 125 < 125 < 125 < 125 7400 < 125 < 125 < 125 < 125 < 1250 < 125 < 125 < 125 < 2500 < 125 830 < 125 J 30010/15/99 TB 10069 D 1900 < 125 < 125 < 125 < 125 D 9800 < 125 < 125 < 125 < 125 < 1250 < 125 < 125 < 125 < 2500 < 125 170 < 125 < 12511/17/99 TB 10473 1400 < 200 < 200 < 200 < 200 7100 < 200 < 200 < 200 < 200 < 2000 < 200 < 200 < 200 < 4000 < 200 J 190 < 200 J 40012/11/99 TB 10711 2700 < 200 < 200 < 200 < 200 5600 < 200 < 200 < 200 < 200 < 2000 < 200 < 200 < 200 < 4000 < 200 970 < 200 J 560

01/06/00 TB 10891 740 < 200 < 200 < 200 < 200 6900 < 200 < 200 < 200 < 200 < 2000 < 200 < 200 < 200 < 4000 < 200 260 < 200 < 20002/13/00 TB 11188 500 < 125 < 125 < 125 < 125 3770 < 125 < 125 < 125 < 125 < 1250 < 125 < 125 < 125 < 2500 < 125 140 < 125 J 12003/04/00 TB 11301 1900 < 125 < 125 < 125 < 125 4400 < 125 < 125 210 < 125 < 1250 < 125 < 125 < 125 < 2800 < 125 2825 < 125 87504/07/00 TB 11528 530 < 25 < 25 < 25 < 25 D 860 < 25 < 25 < 25 < 25 < 250 < 25 < 25 < 25 < 500 < 25 J 16 < 25 8505/13/00 TB 11757 750 < 40 < 40 < 40 < 40 1400 < 40 < 40 < 40 < 40 < 400 < 40 < 40 < 40 < 800 < 40 < 40 < 40 J 6406/06/00 TB 11914 < 80 < 40 < 40 < 40 < 40 1260 < 40 < 40 < 40 < 40 < 400 < 40 < 40 < 40 < 800 < 40 < 40 < 40 < 4007/08/00 TB 12132 < 80 < 40 < 40 < 40 < 40 D 2000 < 40 < 40 < 40 < 40 < 400 < 40 < 40 < 40 < 800 < 40 < 40 < 40 < 40

10/09/00 TB 12744 610 < 80 < 80 < 80 < 80 2300 < 80 < 80 < 80 < 80 < 800 < 80 < 80 < 80 < 1600 < 80 J 73 < 80 J 160

02/19/01 TB 13829 < 50 < 25 < 25 < 25 < 25 670 < 25 < 25 < 25 < 25 < 250 < 25 < 25 < 25 < 500 < 25 < 25 < 25 J 10

05/04/01 TB 14343 60 < 10 < 10 < 10 < 10 380 < 10 < 10 65 < 10 < 100 < 10 < 10 < 10 < 200 < 10 < 10 < 10 146

08/23/01 TB 15095 200 < 5 < 5 < 5 < 5 D 260 < 5 < 5 21 < 5 < 50 < 5 < 5 < 5 1600 < 5 J 5 < 5 66

10/14/01 TB 15334 55 < 5 < 5 < 5 < 5 93 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 3411/03/01 TB 15501 180 < 5 < 5 < 5 < 5 46 < 5 < 5 16 < 5 < 50 < 5 < 5 < 5 J 43 < 5 < 5 < 5 42

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 268 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

MW-088JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: Office Trailer

02/09/02 TB 16381 64 < 5 < 5 < 5 < 5 150 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 J 2 < 5 3005/17/02 TB 17042 76 < 5 < 5 < 5 < 5 9 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 J 2 < 5 908/03/02 TB 17612 45 < 5 < 5 < 5 < 5 12 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 J 5

02/06/03 TB 18609 40 < 5 < 5 < 5 < 5 23 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 505/13/03 TB 19284 31 < 5 < 5 < 5 < 15 174 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 J 208/26/03 TB 19741 12 < 5 < 5 < 5 < 15 185 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 511/14/03 TB 20039 19 < 5 < 5 < 5 < 15 508 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 J 212/15/03 TB 20180 22 < 5 < 5 < 5 < 15 294 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 J 3

02/20/04 TB 20461 68 < 10 < 10 < 10 < 30 1340 < 10 < 10 < 10 < 10 < 40 < 8 < 10 < 10 < 100 < 10 < 10 < 4 J 8

04/09/04 TB 20666 52 < 10 < 10 < 10 < 30 295 < 10 < 10 < 10 < 10 < 40 < 8 < 10 < 10 < 100 < 10 < 10 < 4 J 5

05/21/04 TB 20769 32 < 10 < 10 < 10 < 30 782 < 10 < 10 < 10 < 10 < 40 < 8 < 10 < 10 < 100 < 10 10 < 4 < 1006/24/04 TB 20807 7 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 507/22/04 TB 20884 6 < 5 < 5 < 5 < 15 120 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 509/16/04 TB 21243 < 10 < 10 < 10 < 10 < 30 302 < 10 < 10 < 10 < 10 < 40 < 8 < 10 < 10 < 100 < 10 < 10 < 4 < 10

02/15/05 TB 22063 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 505/12/05 TB 22502 < 5 < 5 < 5 < 5 < 15 91 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 269 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

MW-089JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: Office Trailer

06/13/96 TB 01262 3900 < 5000 < 5000 < 5000 < 10000 120000 < 5000 < 5000 < 5000 < 10000 < 5000 < 50000 < 5000 16000 < 10000 < 500006/14/96 TB 01327 < 12000 < 12000 < 12000 < 25000 140000 < 12000 < 12000 6800 < 25000 < 12000 < 120000 < 12000 21000 < 25000 < 12000

01/08/97 TB 00977 < 2500 < 2500 < 2500 < 5000 87000 < 2500 < 2500 < 2500 < 5000 < 2500 < 25000 < 2500 11000 < 5000 < 250001/28/97 TB 01075 3000 < 5000 < 5000 < 5000 < 10000 77000 < 5000 < 5000 < 5000 < 10000 < 5000 700000 < 5000 9600 < 10000 < 500002/02/97 TB 01608 < 5000 < 5000 < 5000 < 10000 110000 < 5000 < 5000 < 5000 < 10000 < 5000 < 50000 < 5000 14000 < 10000 < 500004/06/97 TB 01953 < 5000 < 5000 < 5000 < 10000 160000 < 5000 < 5000 < 5000 < 10000 < 5000 < 50000 < 5000 19000 < 10000 < 5000

05/12/98 TB 04545 < 5000 < 5000 < 5000 < 5000 B 22000 95000 < 5000 < 5000 < 5000 < 10000 < 5000 < 50000 < 5000 20000 < 10000 < 500007/11/98 TB 05045 11000 < 500 < 500 < 500 < 2000 D 47000 < 500 < 500 J 960 < 500 < 1000 < 1000 < 500 < 1000 < 5000 < 500 18000 < 1500 240008/10/98 TB 05467 J 5000 < 5000 < 5000 < 5000 < 20000 58000 < 5000 < 5000 < 10000 < 5000 < 10000 < 10000 < 5000 < 10000 < 50000 < 5000 14000 < 15000 < 5000

09/18/98 TB 05871 92000 < 250 < 250 < 250 < 1000 41000 < 250 < 250 770 < 250 < 500 < 500 < 250 < 500 < 2500 < 250 8700 < 750 1700

10/08/98 TB 06100 4400 < 1000 < 1000 < 1000 < 4000 D 45000 < 1000 < 1000 J 230 < 1000 < 2000 < 2000 < 1000 < 2000 < 20000 < 1000 15000 < 3000 < 100011/09/98 TB 06502 J 12000 < 1000 < 1000 < 1000 < 4000 58000 < 1000 < 1000 J 460 < 1000 < 2000 < 2000 < 1000 < 2000 < 20000 < 1000 21000 < 3000 J 770

12/04/98 TB 06864 J 3000 < 1000 < 1000 < 1000 < 4000 53000 < 1000 < 1000 J 490 < 1000 < 2000 < 2000 < 1000 < 2000 < 20000 < 1000 22000 < 3000 J 1000

01/04/99 TB 07122 J 4800 < 2500 < 2500 < 2500 < 10000 36000 < 2500 < 2500 < 5000 < 2500 < 5000 < 5000 < 2500 < 5000 < 50000 < 2500 17000 < 7500 < 250002/15/99 TB 07503 210000 < 500 < 500 < 500 < 2000 15000 < 500 < 500 J 390 < 500 < 1000 < 1000 < 500 < 1000 < 10000 < 500 6900 < 1500 320003/17/99 TB 07784 7400 < 250 < 250 < 250 < 1000 6900 < 250 < 250 690 < 250 < 500 < 500 < 250 < 500 < 5000 < 250 11000 < 750 150004/12/99 TB 08014 16000 < 50 < 50 < 50 < 200 360 < 50 < 50 110 < 50 < 100 < 100 < 50 < 100 < 1000 < 50 1100 < 150 46005/04/99 TB 08226 < 16000 < 800 < 800 < 800 < 3200 D 20000 < 800 < 800 J 680 < 800 < 1600 < 1600 < 800 < 1600 < 16000 < 800 14000 < 2400 J 75006/10/99 TB 08626 < 1600 < 80 < 80 < 80 < 320 3000 < 80 < 80 < 160 < 80 < 160 < 160 < 80 < 160 < 1600 < 80 J 74 < 240 < 8007/07/99 TB 08917 8800 < 80 < 80 < 80 < 320 2300 < 80 < 80 1300 < 80 < 160 < 160 < 80 < 160 < 1600 < 80 2100 < 240 48008/06/99 TB 09174 400 < 40 < 40 < 40 < 40 1300 < 40 < 40 < 40 < 40 < 400 < 40 < 40 < 40 < 800 < 40 J 22 < 40 J 5209/08/99 TB 09619 < 10 < 5 < 5 < 5 < 5 J 4 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 510/15/99 TB 10070 140 < 5 < 5 < 5 < 5 D 360 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 2111/17/99 TB 10474 640 < 5 < 5 < 5 < 5 D 1200 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 14 < 5 15212/11/99 TB 10712 820 < 20 < 20 < 20 < 20 700 < 20 < 20 < 20 < 20 < 200 < 20 < 20 < 20 < 400 < 20 < 20 < 20 J 36

02/13/00 TB 11189 350 < 40 < 40 < 40 < 40 1200 < 40 < 40 < 40 < 40 < 400 < 40 < 40 < 40 < 800 < 40 < 40 < 40 J 6704/07/00 TB 11529 < 10 < 5 < 5 < 5 < 5 8 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 505/13/00 TB 11759 < 10 < 5 < 5 < 5 < 5 8 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 5

02/19/01 TB 13830 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 505/02/01 TB 14310 73 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 J 2

08/22/01 TB 15085 D 860 < 5 < 5 < 5 < 5 68 < 5 < 5 39 < 5 < 50 < 5 < 5 < 5 < 100 < 5 37 < 5 56

02/22/02 TB 16530 < 10 < 5 < 5 < 5 < 5 47 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 J 2

05/17/02 TB 17043 80 < 5 < 5 < 5 < 5 11 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 508/08/02 TB 17648 17 < 5 < 5 < 5 < 5 13 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 511/22/02 TB 18251 31 < 5 < 5 < 5 < 5 J 1 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 5

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 270 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

MW-089JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: Office Trailer

02/27/03 TB 18819 92 < 5 < 5 < 5 < 5 J 1 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 J 305/20/03 TB 19298 93 < 5 < 5 < 5 < 15 8 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 508/27/03 TB 19762 12 < 5 < 5 < 5 < 15 9 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 511/17/03 TB 20047 85 < 5 < 5 < 5 < 15 22 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 J 2

02/25/04 TB 20486 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 509/17/04 TB 21256 40 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

02/15/05 TB 22064 39 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 505/13/05 TB 22524 20 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 271 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

MW-090JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: Office Trailer

06/14/96 TB 01263 500 < 2500 < 2500 < 2500 < 5000 48000 < 2500 < 2500 1900 < 5000 < 2500 < 25000 < 2500 4000 < 5000 < 250006/14/96 TB 01328 < 1700 < 1700 < 1700 < 3300 42000 < 1700 < 1700 2300 < 3300 < 1700 < 17000 < 1700 3800 < 3300 < 1700

01/08/97 TB 00976 < 2500 < 2500 < 2500 < 5000 49000 < 2500 < 2500 < 2500 < 5000 < 2500 < 25000 < 2500 3800 < 5000 < 250002/02/97 TB 01609 < 5000 < 5000 < 5000 < 10000 150000 < 5000 < 5000 < 5000 < 10000 < 5000 < 50000 < 5000 17000 < 10000 < 500004/06/97 TB 01942 < 2500 < 2500 < 2500 < 5000 52000 < 2500 < 2500 < 2500 < 5000 < 2500 < 25000 < 2500 5600 < 5000 < 250005/05/97 TB 02098 43000 < 1000 3200 < 100008/09/97 TB 02529 15000 < 100 3700 77011/04/97 TB 03195 < 1000 < 1000 < 1000 4000 27000 < 1000 < 1000 < 1000 < 2000 < 1000 E 210000 < 1000 4100 < 2000 < 1000

01/31/98 TB 03705 < 500 < 500 < 500 < 2000 16000 < 500 < 1000 < 500 < 1000 < 1000 < 500 < 1000 < 500 4200 < 1500 J 240

03/15/98 TB 03994 < 250 < 250 < 250 < 500 7700 < 250 < 250 < 250 < 500 < 250 < 2500 < 250 1600 < 500 < 25006/03/98 TB 04682 < 250 < 250 < 250 < 1000 3600 < 250 < 250 < 500 < 250 < 500 < 500 < 250 < 500 < 500 < 250 630 < 750 < 25007/09/98 TB 05010 < 50 < 25 < 25 < 25 < 100 520 < 25 < 25 < 50 < 25 < 50 < 50 < 25 < 50 < 250 < 25 56 < 75 < 2508/09/98 TB 05450 2300 < 250 < 250 < 250 < 1000 7300 < 250 < 250 < 500 < 250 < 500 < 500 < 250 < 500 < 2500 < 250 1100 < 750 < 25009/09/98 TB 05767 550 J 11 < 25 < 25 < 100 D 9300 < 25 < 25 110 < 25 < 50 < 50 < 25 < 50 < 250 < 25 D 2800 < 75 42010/08/98 TB 06101 J 230 820 < 250 390 < 1000 2200 < 250 < 250 < 500 < 250 < 500 < 500 < 250 < 500 26000 < 250 J 360 J 500 < 25011/08/98 TB 06475 J 450 < 25 < 25 < 25 < 100 D 2100 < 25 < 25 J 28 < 25 < 50 < 50 < 25 < 50 < 500 < 25 660 < 75 15012/02/98 TB 06846 J 42 < 50 < 50 < 50 < 200 3900 < 50 < 50 J 81 < 50 < 100 < 100 < 50 < 100 < 1000 < 50 2300 < 150 J 200

01/04/99 TB 07123 J 69 < 25 < 25 < 25 < 100 670 < 25 < 25 J 24 < 25 < 50 < 50 < 25 < 50 < 500 < 25 69 < 75 J 7002/15/99 TB 07502 < 2000 < 100 < 100 < 100 < 400 D 4900 < 100 < 100 J 58 < 100 < 200 < 200 < 100 < 200 < 2000 < 100 1800 < 300 56003/29/99 TB 07928 < 100 < 5 < 5 < 5 < 20 39 < 5 < 5 < 10 < 5 < 10 < 10 < 5 < 10 < 100 < 5 J 6 < 15 1805/01/99 TB 08193 300 6 < 5 < 5 < 20 D 570 < 5 < 5 J 3 < 5 < 10 < 10 < 5 < 10 < 100 < 5 150 < 15 13008/05/99 TB 09153 < 10 < 5 < 5 < 5 < 5 8 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 J 2 < 5 < 510/15/99 TB 10071 < 200 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 1000 < 100 < 100 < 100 < 2000 < 100 < 100 < 100 < 10011/17/99 TB 10475 < 10 < 5 < 5 < 5 < 5 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 J 112/11/99 TB 10713 < 10 < 5 < 5 < 5 < 5 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 5

05/12/00 TB 11748 < 10 < 5 < 5 < 5 < 5 96 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 507/08/00 TB 12133 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 5

03/02/01 TB 13973 56 < 5 < 5 < 5 < 5 69 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 110 < 5 29 < 5 < 505/04/01 TB 14344 220 < 5 < 5 < 5 < 5 D 450 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 19 < 5 4106/03/01 TB 14577 15 < 5 < 5 < 5 < 5 26 < 5 < 5 J 4 < 5 < 50 < 5 < 5 < 5 < 100 < 5 25 < 5 J 6

08/22/01 TB 15086 130 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 509/11/01 TB 15228 14 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 511/03/01 TB 15502 69 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 J 45 < 5 < 5 < 5 < 5

02/07/02 TB 16375 59 < 5 < 5 < 5 < 5 8 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 505/17/02 TB 17044 19 < 5 < 5 < 5 < 5 J 1 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 5

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 272 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

MW-090JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: Office Trailer

02/06/03 TB 18610 11 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 505/13/03 TB 19285 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 508/26/03 TB 19742 220 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 5 < 2 J 211/17/03 TB 20048 8 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

02/20/04 TB 20462 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 509/15/04 TB 21218 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

02/15/05 TB 22065 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 505/12/05 TB 22503 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 273 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

MW-093JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: Office Trailer

08/04/96 TB 00168 160 < 50 < 50 260 < 100 11000 < 50 < 50 100 < 50 < 100 < 50 < 50 < 1000 < 50 1800 < 100 18010/06/96 TB 00530 < 1000 < 1000 < 1000 < 2000 26000 < 1000 < 1000 < 1000 < 2000 < 1000 < 10000 < 1000 2400 < 2000 < 100011/06/96 TB 00665 < 1200 < 1200 < 1200 < 2500 36000 < 1200 < 1200 < 1200 < 2500 < 1200 < 12000 < 1200 3600 < 2500 < 120012/08/96 TB 00817 < 1000 < 1000 < 1000 < 2000 21000 < 1000 < 1000 < 1000 < 2000 < 1000 < 10000 < 1000 1700 < 2000 < 1000

01/08/97 TB 00972 < 1000 < 1000 < 1000 < 2000 19000 < 1000 < 1000 < 1000 < 2000 < 1000 < 10000 < 1000 1500 < 2000 < 100002/02/97 TB 01624 < 1000 < 1000 < 1000 < 2000 25000 < 1000 < 1000 < 1000 < 2000 < 1000 < 10000 < 1000 2100 < 2000 26004/06/97 TB 01949 < 500 < 500 < 500 < 1000 16000 < 500 < 500 < 500 < 1000 < 500 J 4700 < 500 1400 < 1000 < 50006/08/97 TB 02271 36000 < 500 5800 < 50009/03/97 TB 02743 16000 < 200 1200 < 20011/29/97 TB 03365 < 1000 < 1000 J 720 < 4000 27000 < 1000 < 1000 < 2000 < 1000 < 2000 < 2000 < 1000 < 2000 < 1000 7500 < 3000 < 1000

03/15/98 TB 03998 < 250 < 250 < 250 < 500 7300 < 250 < 250 < 250 < 500 < 250 < 2500 < 250 410 < 500 < 25005/08/98 TB 04497 < 500 < 500 < 500 < 500 B 1200 10000 < 500 < 500 < 500 < 1000 < 500 < 5000 < 500 2400 < 1000 < 50007/09/98 TB 05011 < 200 < 100 < 100 < 100 < 400 3800 < 100 < 100 < 200 < 100 < 200 < 200 < 100 < 200 < 1000 < 100 J 200 < 300 < 10008/09/98 TB 05451 < 500 < 250 < 250 < 250 < 1000 8200 < 250 < 250 < 500 < 250 < 500 < 500 < 250 < 500 < 2500 < 250 550 < 750 < 25009/09/98 TB 05765 < 200 < 100 < 100 < 100 < 400 E 7300 < 100 < 100 J 23 < 100 < 200 < 200 < 100 < 200 < 1000 < 100 470 < 300 J 7611/08/98 TB 06476 J 160 < 25 < 25 < 25 < 100 D 5800 < 25 < 25 J 21 < 25 < 50 < 50 < 25 < 50 < 500 < 25 970 < 75 17012/02/98 TB 06847 < 2000 < 100 < 100 < 100 < 400 D 6800 < 100 < 100 J 31 < 100 < 200 < 200 < 100 < 200 < 2000 < 100 1300 < 300 J 180

01/04/99 TB 07124 J 100 < 125 < 125 < 125 < 500 5200 < 125 < 125 J 42 < 125 < 250 < 250 < 125 < 250 < 2500 < 125 570 < 375 J 13002/14/99 TB 07490 < 5000 < 250 < 250 < 250 < 1000 8200 < 250 < 250 J 150 < 250 < 500 < 500 < 250 < 500 < 5000 < 250 1600 < 750 J 25005/01/99 TB 08194 < 200 < 10 < 10 < 10 < 40 D 1100 < 10 < 10 J 8 < 10 < 20 < 20 < 10 < 20 < 200 < 10 220 < 30 10008/06/99 TB 09175 < 100 < 50 < 50 < 50 < 50 4430 < 50 < 50 < 50 < 50 < 500 < 50 < 50 < 50 < 1000 < 50 400 < 50 < 5010/15/99 TB 10072 330 < 50 < 50 < 50 < 50 1130 < 50 < 50 < 50 < 50 < 500 < 50 < 50 < 50 < 1000 < 50 50 < 50 27011/17/99 TB 10476 78 < 10 < 10 < 10 < 10 380 < 10 < 10 < 10 < 10 < 100 < 10 < 10 < 10 < 200 < 10 11 < 10 14012/11/99 TB 10714 280 < 10 < 10 < 10 < 10 D 2300 < 10 < 10 30 < 10 < 100 < 10 < 10 < 10 J 120 < 10 160 < 10 150

02/14/00 TB 11195 330 8 < 5 < 5 < 5 D 2200 < 5 < 5 170 < 5 < 50 < 5 < 5 < 5 < 100 < 5 D 580 < 5 103005/13/00 TB 11758 22 J 5 < 5 < 5 < 5 53 < 5 < 5 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 15 < 5 16107/08/00 TB 12134 < 10 < 5 < 5 < 5 < 5 J 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 2010/09/00 TB 12745 30 < 5 < 5 < 5 < 5 200 < 5 < 5 9 < 5 < 50 < 5 < 5 < 5 < 100 < 5 31 < 5 201

02/19/01 TB 13831 < 10 < 5 < 5 < 5 < 5 D 350 < 5 < 5 87 < 5 < 50 < 5 < 5 < 5 < 100 < 5 6 < 5 22208/23/01 TB 15096 130 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 J 58 < 5 < 5 < 5 < 5

11/03/01 TB 15503 J 8 < 5 < 5 < 5 6 25 < 5 < 5 9 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 29

02/09/02 TB 16382 J 6 < 5 < 5 < 5 < 5 D 370 < 5 < 5 13 < 5 < 50 < 5 < 5 < 5 < 100 < 5 82 < 5 78

05/17/02 TB 17045 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 508/08/02 TB 17649 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 5

02/06/03 TB 18611 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 5

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 274 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

MW-093JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: Office Trailer

05/19/03 TB 19292 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 508/26/03 TB 19743 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 511/17/03 TB 20049 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

09/16/04 TB 21244 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

02/16/05 TB 22102 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 505/13/05 TB 22525 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 384 < 5 < 5 < 2 < 5

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 275 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

MW-099JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: Office Trailer

08/21/96 TB 00275 < 10 < 17 < 50 < 50 < 100 74 < 50 < 50 < 50 < 50 < 100 < 50 < 50 < 1000 < 50 < 50 < 100 < 50

02/21/02 TB 16514 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 160 < 5 < 5 < 5 < 5

02/27/03 TB 18820 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 5

02/25/04 TB 20487 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 509/17/04 TB 21257 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

02/17/05 TB 22115 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 505/13/05 TB 22526 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 276 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

MW-113JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: Office Trailer

12/01/03 TB 20084 8000 < 50 < 50 < 50 < 150 32800 < 50 < 50 280 < 50 < 200 < 40 < 50 < 50 3090 < 50 3200 < 20 118012/02/03 TB 20090 4000 < 1000 < 1000 < 1000 < 3000 29800 < 1000 < 1000 < 1000 < 1000 < 4000 < 800 < 1000 < 1000 < 10000 < 1000 2600 < 400 J 60012/03/03 TB 20118 5000 < 1000 < 1000 < 1000 < 3000 30600 < 1000 < 1000 < 1000 < 1000 < 4000 < 800 < 1000 < 1000 < 10000 < 1000 2200 < 400 J 60012/15/03 TB 20177 1250 < 160 < 160 < 160 < 480 7140 < 160 < 160 < 160 < 160 < 640 < 128 < 160 < 160 < 1600 < 160 352 < 64 J 16012/31/03 TB 20195 104 < 20 < 20 < 20 < 60 946 < 20 < 20 < 20 < 20 < 80 < 16 < 20 < 20 < 200 < 20 < 20 < 8 J 12

01/05/04 TB 20197 53 < 20 < 20 < 20 < 60 869 < 20 < 20 < 20 < 20 < 80 < 16 < 20 < 20 < 200 < 20 < 20 < 8 J 801/12/04 TB 20207 836 < 20 < 20 < 20 < 60 6490 < 20 < 20 < 20 < 20 < 80 < 16 < 20 < 20 380 < 20 32 < 8 18301/21/04 TB 20247 1240 < 160 < 160 < 160 < 480 9070 < 160 < 160 < 160 < 160 < 640 < 128 < 160 < 160 < 1600 < 160 < 160 < 64 J 19202/25/04 TB 20488 543 < 50 < 50 < 50 < 150 2720 < 50 < 50 < 50 < 50 < 200 < 40 < 50 < 50 < 500 < 50 < 50 < 20 J 5004/08/04 TB 20643 1240 < 50 < 50 < 50 < 150 2390 < 50 < 50 < 50 < 50 < 200 < 40 < 50 < 50 < 500 < 50 < 50 < 20 J 43

05/21/04 TB 20770 799 < 50 < 50 < 50 < 150 2060 < 50 < 50 < 50 < 50 < 200 < 40 < 50 < 50 < 500 < 50 < 50 < 20 J 40

06/24/04 TB 20808 5 < 5 < 5 < 5 < 15 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 507/22/04 TB 20885 < 5 < 5 < 5 < 5 < 15 86 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 508/31/04 TB 21075 < 5 < 5 < 5 < 5 < 15 14 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

02/16/05 TB 22103 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 505/12/05 TB 22504 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 277 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

MW-117JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: Office Trailer

03/09/04 TB 20579 1490 < 5 < 5 < 5 109 3530 < 5 < 5 183 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 21803/16/04 TB 20587 1490 < 50 < 50 < 50 J 170 4230 < 50 < 50 212 < 50 < 200 < 40 < 50 < 50 < 500 < 50 901 < 20 23303/22/04 TB 20613 1030 < 125 < 125 < 125 < 375 4500 < 125 < 125 148 < 125 < 500 < 100 < 125 < 125 < 1250 < 125 733 < 50 J 10504/08/04 TB 20644 1100 < 125 < 125 < 125 < 375 5480 < 125 < 125 188 < 125 < 500 < 100 < 125 < 125 < 1250 < 125 550 < 50 J 11005/21/04 TB 20771 1460 < 125 < 125 < 125 < 375 7780 < 125 < 125 203 < 125 < 500 < 100 < 125 < 125 < 1250 < 125 512 < 50 J 10606/24/04 TB 20809 537 < 200 < 200 < 200 < 600 5300 < 200 < 200 < 200 < 200 < 800 < 160 < 200 < 200 < 2000 < 200 397 < 80 J 8007/22/04 TB 20886 325 < 100 < 100 < 100 < 300 4420 < 100 < 100 113 < 100 < 400 < 80 < 100 < 100 < 1000 < 100 334 < 40 J 5808/31/04 TB 21076 258 < 80 < 80 < 80 < 240 3150 < 80 < 80 94 < 80 < 320 < 64 < 80 < 80 < 800 < 80 266 < 32 J 4210/18/04 TB 21338 240 < 80 < 80 < 80 < 240 2240 < 80 < 80 < 80 < 80 < 320 < 64 < 80 < 80 < 800 < 80 199 < 32 J 3811/18/04 TB 21483 < 40 < 40 < 40 < 40 < 120 1520 < 40 < 40 < 40 < 40 < 160 < 32 < 40 < 40 < 400 < 40 95 < 16 < 40

12/08/04 TB 21587 42 < 40 < 40 < 40 < 120 1020 < 40 < 40 < 40 < 40 < 160 < 32 < 40 < 40 < 400 < 40 66 < 16 < 40

01/14/05 TB 21816 65 < 25 < 25 < 25 < 75 1110 < 25 < 25 25 J 31 < 100 < 20 < 25 < 25 < 250 < 25 66 < 10 J 10

02/16/05 TB 22104 < 25 < 25 < 25 < 25 < 75 550 < 25 < 25 < 25 < 25 < 100 < 20 < 25 < 25 < 250 < 25 39 < 10 < 2505/12/05 TB 22505 9 < 5 < 5 < 5 < 15 128 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 10 < 2 J 2

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 278 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

AS-002JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: West Road

08/26/03 TB 19737 3800 < 200 < 200 < 200 < 600 70400 < 200 < 200 1080 < 200 < 800 < 160 < 200 < 200 < 2000 < 200 5120 < 80 80012/15/03 TB 20176 2620 26 < 5 14 < 15 55500 < 5 < 5 624 < 5 < 20 < 4 < 5 < 5 < 50 < 5 3020 < 2 574

03/02/04 TB 20544 3090 < 1250 < 1250 < 1250 < 3750 76200 < 1250 < 1250 < 1250 < 1250 < 5000 < 1000 < 1250 < 1250 < 12500 < 1250 4180 < 500 < 125004/13/04 TB 20677 < 2000 < 2000 < 2000 < 2000 < 6000 90700 < 2000 < 2000 < 2000 < 2000 < 8000 < 1600 < 2000 < 2000 < 20000 < 2000 3440 < 800 < 200005/11/04 TB 20710 < 2000 < 2000 < 2000 < 2000 < 6000 74300 < 2000 < 2000 < 2000 < 2000 < 8000 < 1600 < 2000 < 2000 < 20000 < 2000 3880 < 800 < 200006/22/04 TB 20782 5280 < 2000 < 2000 < 2000 < 6000 94100 < 2000 < 2000 < 2000 < 2000 < 8000 < 1600 < 2000 < 2000 < 20000 < 2000 3980 < 800 < 200007/23/04 TB 20887 < 2000 < 2000 < 2000 < 2000 < 6000 59700 < 2000 < 2000 < 2000 < 2000 < 8000 < 1600 < 2000 < 2000 < 20000 < 2000 3470 < 800 < 200009/01/04 TB 21077 2470 < 2000 < 2000 < 2000 < 6000 78000 < 2000 < 2000 < 2000 < 2000 < 8000 < 1600 < 2000 < 2000 < 20000 < 2000 5090 < 800 < 200010/08/04 TB 21259 3990 < 2500 < 2500 < 2500 < 7500 96700 < 2500 < 2500 < 2500 < 2500 < 10000 < 2000 < 2500 < 2500 < 25000 < 2500 9000 < 1000 < 250011/16/04 TB 21415 < 1250 < 1250 < 1250 < 1250 < 3750 60700 < 1250 < 1250 < 1250 < 1250 < 5000 < 1000 < 1250 < 1250 < 12500 < 1250 2320 < 500 < 1250

12/09/04 TB 21608 1970 < 1250 < 1250 < 1250 < 3750 89000 < 1250 < 1250 < 1250 < 1250 < 5000 < 1000 < 1250 < 1250 47000 < 1250 3890 < 500 < 1250

01/18/05 TB 21826 2500 < 2500 < 2500 < 2500 < 7500 85700 < 2500 < 2500 < 2500 < 2500 < 10000 < 2000 < 2500 < 2500 < 25000 < 2500 < 2500 < 1000 J 1000

02/10/05 TB 21953 3150 < 1250 < 1250 < 1250 < 3750 94600 < 1250 < 1250 1430 < 1250 < 5000 < 1000 < 1250 < 1250 < 12500 < 1250 2630 < 500 J 695

04/15/05 TB 22377 < 2000 < 2000 < 2000 < 2000 < 6000 81500 < 2000 < 2000 < 2000 < 2000 < 8000 < 1600 < 2000 < 2000 < 20000 < 2000 2230 < 800 < 2000

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 279 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

AW-001JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: West Road

03/11/03 TB 18962 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 508/22/03 TB 19722 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 509/09/03 TB 19778 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 510/03/03 TB 19851 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 72 < 5 < 5 < 2 < 511/12/03 TB 19998 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 512/02/03 TB 20110 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

03/02/04 TB 20545 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 508/31/04 TB 21046 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 510/08/04 TB 21260 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 511/16/04 TB 21416 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

12/09/04 TB 21609 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

01/18/05 TB 21840 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 502/10/05 TB 21950 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 506/15/05 TB 22675 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 280 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

AW-002JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: West Road

03/11/03 TB 18963 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 5

03/02/04 TB 20546 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 508/31/04 TB 21047 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 510/08/04 TB 21261 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 511/16/04 TB 21417 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 150 < 5 < 5 < 2 < 512/09/04 TB 21610 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

01/18/05 TB 21841 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 502/10/05 TB 21951 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 505/04/05 TB 22406 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 281 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

AW-003JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: West Road

11/24/96 TB 00781 < 250 < 250 < 250 < 500 4200 < 250 < 250 < 250 < 500 < 250 < 2500 < 250 1100 < 500 < 25012/22/96 TB 00933 < 250 < 250 < 250 950 9500 < 250 < 250 < 250 < 500 < 250 < 2500 < 250 3100 < 500 450

02/18/97 TB 01729 < 250 < 250 < 250 < 500 5200 < 250 < 250 J 120 < 500 < 250 < 2500 < 250 790 < 500 J 9503/01/97 TB 01798 < 250 < 250 < 250 < 500 5400 < 250 < 250 < 250 < 500 < 250 < 2500 < 250 860 < 500 J 9503/19/97 TB 01891 < 250 < 250 < 250 < 500 5100 < 250 < 250 < 250 < 500 < 250 < 2500 < 250 580 < 500 < 25004/07/97 TB 01973 < 500 < 500 < 500 < 1000 7600 < 500 < 500 < 500 < 1000 < 500 < 5000 < 500 2200 < 1000 J 22005/05/97 TB 02091 3900 < 100 200 < 10008/06/97 TB 02515 7400 < 100 1200 33011/03/97 TB 03188 < 250 < 250 < 250 J 370 3900 < 250 < 250 < 250 < 500 < 250 < 2500 < 250 370 < 500 < 250

01/31/98 TB 03708 < 500 < 500 < 500 < 2000 3000 < 500 < 1000 < 500 < 1000 < 1000 < 500 < 1000 < 500 J 430 < 1500 < 50004/04/98 TB 04186 < 250 < 250 < 250 < 250 B 860 4700 < 250 < 250 J 130 < 500 < 250 < 2500 < 250 280 < 500 < 25009/05/98 TB 05697 < 200 < 100 < 100 < 100 < 400 D 11000 < 100 < 100 J 40 < 100 < 200 < 200 < 100 < 200 < 1000 < 100 1800 < 300 J 40

10/07/98 TB 06079 J 170 < 500 < 500 < 500 < 2000 12000 < 500 < 500 < 1000 < 500 < 1000 < 1000 < 500 < 1000 < 5000 < 500 1100 < 1500 < 50011/04/98 TB 06390 < 5000 < 250 < 250 < 250 < 1000 D 12000 < 250 < 250 < 500 < 250 < 500 < 500 < 250 < 500 < 5000 < 250 1700 < 750 < 25012/01/98 TB 06820 < 1000 < 50 < 50 < 50 < 200 1000 < 50 < 50 < 100 < 50 < 100 < 100 < 50 < 100 J 150 < 50 J 57 < 150 < 50

01/01/99 TB 07080 < 2500 < 125 < 125 < 125 < 500 2100 < 125 < 125 < 250 < 125 < 250 < 250 < 125 < 250 < 2500 < 125 J 68 < 375 < 12502/01/99 TB 07338 < 500 < 25 < 25 < 25 < 100 1200 < 25 < 25 < 50 < 25 < 50 < 50 < 25 < 50 540 < 25 J 30 < 75 J 505/05/99 TB 08227 < 100 J 4 < 5 10 < 20 46 < 5 < 5 < 10 < 5 < 10 < 10 < 5 < 10 150 < 5 < 10 < 15 < 508/03/99 TB 09105 < 10 < 5 < 5 5 < 5 99 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 J 111/18/99 TB 10502 < 10 < 5 < 5 5 < 5 25 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 J 68 < 5 < 5 < 5 < 5

02/13/00 TB 11185 < 10 < 5 < 5 < 5 < 5 7 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 J 77 < 5 < 5 < 5 < 505/05/00 TB 11667 < 10 < 5 < 5 < 5 < 5 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 510/19/00 TB 12850 < 10 < 5 < 5 < 5 < 5 J 2 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 5

02/02/01 TB 13690 < 10 < 5 < 5 6 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 J 97 < 5 < 5 < 5 < 505/05/01 TB 14345 < 10 < 5 < 5 < 5 < 5 J 4 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 J 80 < 5 < 5 < 5 < 508/12/01 TB 14930 < 10 < 5 < 5 < 5 < 5 J 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 J 59 < 5 < 5 < 5 < 5

02/11/02 TB 16402 < 10 < 5 < 5 < 5 < 5 J 4 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 J 51 < 5 < 5 < 5 < 509/05/02 TB 17862 65 8 < 5 < 5 < 5 D 4800 < 5 < 5 69 < 5 < 50 < 5 < 5 < 5 890 < 5 200 < 5 J 6910/18/02 TB 18077 1200 6 < 5 < 5 < 5 D 11000 < 5 < 5 150 < 5 < 50 < 5 < 5 < 5 570 < 5 89 < 5 82

11/07/02 TB 18154 120 < 50 < 50 < 50 < 50 3400 < 50 < 50 J 20 < 50 < 500 < 50 < 50 < 50 < 1000 < 50 J 20 < 50 J 30

01/21/03 TB 18496 J 280 < 250 < 250 < 250 < 250 10000 < 250 < 250 J 140 < 250 < 2500 < 250 < 250 < 250 < 5000 < 250 J 57 < 250 J 100

02/25/03 TB 18767 J 7 < 5 < 5 < 5 < 5 83 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 7 < 5 < 504/10/03 TB 19077 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 505/09/03 TB 19226 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 506/06/03 TB 19344 < 5 < 5 < 5 < 5 < 15 78 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 15 < 2 < 5

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 282 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

AW-003JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: West Road

07/07/03 TB 19444 < 5 < 5 < 5 < 5 < 15 23 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 81 < 5 < 5 < 2 < 508/13/03 TB 19623 < 5 < 5 < 5 < 5 < 15 9 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 199 < 5 < 5 < 2 < 509/09/03 TB 19779 < 5 < 5 < 5 < 5 < 15 7 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 232 < 5 < 5 < 2 < 510/03/03 TB 19848 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 282 < 5 < 5 < 2 < 511/12/03 TB 19994 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 352 < 5 < 5 < 2 < 512/02/03 TB 20111 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 233 < 5 < 5 < 2 < 5

03/02/04 TB 20547 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 326 < 5 < 5 < 2 < 504/13/04 TB 20678 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 310 < 5 < 5 < 2 < 505/11/04 TB 20711 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 326 < 5 < 5 < 2 < 506/22/04 TB 20783 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 491 < 5 < 5 < 2 < 5

08/31/04 TB 21048 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 168 < 5 < 5 < 2 < 510/08/04 TB 21262 < 5 < 5 < 5 < 5 < 15 388 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 88 < 5 < 5 < 2 J 2

11/16/04 TB 21418 7 < 5 < 5 < 5 < 15 250 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 512/09/04 TB 21611 16 < 5 < 5 < 5 < 15 753 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 J 2

01/18/05 TB 21827 79 < 25 < 25 < 25 < 75 3500 < 25 < 25 < 25 < 25 < 100 < 20 < 25 < 25 < 250 < 25 43 < 10 J 3402/10/05 TB 21952 103 < 80 < 80 < 80 < 240 2910 < 80 < 80 < 80 < 80 < 320 < 64 < 80 < 80 < 800 < 80 < 80 < 32 < 8004/15/05 TB 22380 268 < 100 < 100 < 100 < 300 7590 < 100 < 100 < 100 < 100 < 400 < 80 < 100 < 100 < 1000 < 100 223 < 40 < 100

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 283 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

AW-004JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: West Road

11/24/96 TB 00780 < 2500 < 2500 < 2500 < 5000 68000 < 2500 < 2500 < 2500 < 5000 < 2500 < 25000 < 2500 7500 < 5000 < 250012/22/96 TB 00934 < 1200 < 1200 < 1200 7700 35000 < 1200 < 1200 < 1200 < 2500 < 1200 < 12000 < 1200 4900 < 2500 < 1200

01/28/97 TB 01071 1300 < 1000 < 1000 < 1000 < 2000 23000 < 1000 < 1000 < 1000 < 2000 < 1000 < 10000 < 1000 3000 < 2000 < 100002/18/97 TB 01730 < 1000 < 1000 < 1000 < 2000 19000 < 1000 < 1000 J 500 < 2000 < 1000 < 10000 < 1000 2000 < 2000 < 100003/01/97 TB 01799 < 1000 < 1000 < 1000 < 2000 17000 < 1000 < 1000 J 400 < 2000 < 1000 < 10000 < 1000 1500 < 2000 < 100003/19/97 TB 01892 < 1000 < 1000 < 1000 < 2000 19000 < 1000 < 1000 J 830 < 2000 < 1000 < 10000 < 1000 1900 < 2000 < 100004/07/97 TB 01974 < 1000 < 1000 < 1000 < 2000 28000 < 1000 J 500 J 840 < 2000 < 1000 < 10000 < 1000 6700 < 2000 J 38006/06/97 TB 02233 16000 < 500 1600 < 50009/01/97 TB 02728 44000 460 8800 238011/29/97 TB 03358 < 250 < 250 < 250 < 1000 9200 < 250 < 250 J 100 < 250 < 500 < 500 < 250 < 500 < 250 500 < 750 < 250

03/16/98 TB 04012 17000 < 200 620 < 20005/08/98 TB 04487 7000 < 200 530 < 20007/09/98 TB 05012 < 500 < 250 < 250 < 250 < 1000 12000 < 250 < 250 < 500 < 250 < 500 < 500 < 250 < 500 < 2500 < 250 1700 < 750 < 25009/05/98 TB 05698 2400 < 500 < 500 < 500 < 2000 20000 < 500 < 500 J 110 < 500 < 1000 < 1000 < 500 < 1000 < 5000 < 500 3200 < 1500 < 50010/07/98 TB 06080 J 100 < 500 < 500 < 500 < 2000 8000 < 500 < 500 < 1000 < 500 < 1000 < 1000 < 500 < 1000 < 5000 < 500 J 670 < 1500 < 50011/04/98 TB 06391 < 10000 < 500 < 500 < 500 < 2000 11000 < 500 < 500 < 1000 < 500 < 1000 < 1000 < 500 < 1000 < 10000 < 500 J 740 < 1500 < 50012/01/98 TB 06819 < 5000 < 250 < 250 < 250 < 1000 10000 < 250 < 250 < 500 < 250 < 500 < 500 < 250 < 500 < 5000 < 250 1000 < 750 < 250

01/01/99 TB 07081 < 10000 < 500 < 500 < 500 < 2000 11000 < 500 < 500 < 1000 < 500 < 1000 < 1000 < 500 < 1000 < 10000 < 500 1100 < 1500 < 50002/01/99 TB 07339 J 200 < 250 < 250 < 250 < 1000 5200 < 250 < 250 < 500 < 250 < 500 < 500 < 250 < 500 < 5000 < 250 J 320 < 750 < 25005/05/99 TB 08228 < 500 < 25 < 25 < 25 < 100 1000 < 25 < 25 < 50 < 25 < 50 < 50 < 25 < 50 < 500 < 25 < 50 < 75 < 2508/03/99 TB 09106 < 100 < 50 < 50 < 50 < 50 1600 < 50 < 50 < 50 < 50 < 500 < 50 < 50 < 50 < 1000 < 50 < 50 < 50 < 5011/18/99 TB 10503 < 100 < 50 < 50 < 50 < 50 1400 < 50 < 50 < 50 < 50 < 500 < 50 < 50 < 50 J 730 < 50 < 50 < 50 < 50

02/08/00 TB 11139 < 100 < 50 < 50 < 50 < 50 1290 < 50 < 50 < 50 < 50 < 500 < 50 < 50 < 50 < 1000 < 50 < 50 < 50 < 5005/05/00 TB 11668 < 160 < 80 < 80 < 80 < 80 2010 < 80 < 80 < 80 < 80 < 800 < 80 < 80 < 80 < 1600 < 80 < 80 < 80 < 8010/19/00 TB 12851 < 10 < 5 < 5 < 5 < 5 140 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 512/07/00 TB 13365 < 10 < 5 < 5 < 5 < 5 31 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 5

02/02/01 TB 13691 < 10 < 5 < 5 < 5 < 5 38 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 J 63 < 5 < 5 < 5 < 505/05/01 TB 14346 460 < 50 < 50 < 50 < 50 1000 < 50 < 50 < 50 < 50 < 500 < 50 < 50 < 50 < 1000 < 50 < 50 < 50 < 5006/01/01 TB 14546 < 40 < 20 < 20 < 20 < 20 460 < 20 < 20 < 20 < 20 < 200 < 20 < 20 < 20 6500 < 20 < 20 < 20 < 2007/17/01 TB 14713 < 40 < 20 < 20 < 20 < 20 460 < 20 < 20 < 20 < 20 < 200 < 20 < 20 < 20 < 400 < 20 < 20 < 20 < 20

08/12/01 TB 14931 410 160 < 100 < 100 590 3000 < 100 < 100 < 100 < 100 < 1000 < 100 < 100 < 100 19000 < 100 < 100 180 < 10012/07/01 TB 15894 210 < 100 < 100 < 100 < 100 3300 < 100 < 100 < 100 < 100 < 1000 < 100 < 100 < 100 2700 < 100 < 100 < 100 < 100

01/10/02 TB 16118 < 100 < 50 < 50 < 50 < 50 1300 < 50 < 50 < 50 < 50 < 500 < 50 < 50 < 50 < 1000 < 50 < 50 < 50 < 5002/11/02 TB 16403 < 20 < 10 < 10 < 10 < 10 250 < 10 < 10 < 10 < 10 < 100 < 10 < 10 < 10 < 200 < 10 < 10 < 10 J 604/06/02 TB 16799 < 10 < 5 < 5 < 5 < 5 87 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 130 < 5 < 5 < 5 < 509/05/02 TB 17863 J 36 < 25 < 25 < 25 < 25 980 < 25 < 25 < 25 < 25 < 250 < 25 < 25 < 25 < 500 < 25 J 5 < 25 < 25

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 284 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

AW-004JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: West Road

10/18/02 TB 18078 180 < 50 < 50 < 50 < 50 D 2500 < 50 < 50 J 20 < 50 < 500 < 50 < 50 < 50 < 1000 < 50 J 20 < 50 J 1011/26/02 TB 18319 J 40 < 25 < 25 < 25 < 25 2700 < 25 < 25 J 5 < 25 < 250 < 25 < 25 < 25 D 20000 < 25 J 10 < 25 J 18

01/09/03 TB 18448 45 < 20 < 20 < 20 < 20 900 < 20 < 20 20 < 20 < 200 < 20 < 20 < 20 < 200 < 20 92 < 20 J 2402/25/03 TB 18768 170 < 80 < 80 < 80 < 80 2100 < 80 < 80 < 80 < 80 < 800 < 80 < 80 < 80 < 1600 < 80 J 31 < 80 J 4804/10/03 TB 19078 < 50 < 50 < 50 < 50 < 150 1530 < 50 < 50 < 50 < 50 < 200 < 40 < 50 < 50 < 500 < 50 < 50 < 20 < 5005/09/03 TB 19227 < 25 < 25 < 25 < 25 < 75 800 < 25 < 25 < 25 < 25 < 100 < 20 < 25 < 25 < 250 < 25 < 25 < 10 < 2506/06/03 TB 19345 60 < 50 < 50 < 50 < 150 2050 < 50 < 50 < 50 < 50 < 200 < 40 < 50 < 50 < 500 < 50 < 50 < 20 < 5007/07/03 TB 19445 150 < 50 < 50 < 50 < 150 2360 < 50 < 50 < 50 < 50 < 200 < 40 < 50 < 50 < 500 < 50 80 < 20 < 5008/13/03 TB 19624 70 < 50 < 50 < 50 < 150 1740 < 50 < 50 < 50 < 50 < 200 < 40 < 50 < 50 < 500 < 50 < 50 < 20 < 5009/09/03 TB 19780 72 < 40 < 40 < 40 < 120 1530 < 40 < 40 < 40 < 40 < 160 < 32 < 40 < 40 < 400 < 40 < 40 < 16 < 40

10/03/03 TB 19849 65 < 25 < 25 < 25 < 75 1210 < 25 < 25 < 25 < 25 < 100 < 20 < 25 < 25 < 250 < 25 25 < 10 < 2511/12/03 TB 19995 160 < 80 < 80 < 80 < 240 2030 < 80 < 80 < 80 < 80 < 320 < 64 < 80 < 80 < 800 < 80 < 80 < 32 < 8012/02/03 TB 20112 310 < 50 < 50 < 50 < 150 3760 < 50 < 50 < 50 < 50 < 200 < 40 < 50 < 50 < 500 < 50 150 < 20 J 50

12/15/03 TB 20175 180 < 100 < 100 < 100 < 300 3260 < 100 < 100 < 100 < 100 < 400 < 80 < 100 < 100 < 1000 < 100 < 100 < 40 J 40

03/02/04 TB 20548 51 < 25 < 25 < 25 < 75 931 < 25 < 25 < 25 < 25 < 100 < 20 < 25 < 25 < 250 < 25 < 25 < 10 < 2504/13/04 TB 20679 50 < 25 < 25 < 25 < 75 1150 < 25 < 25 < 25 < 25 < 100 < 20 < 25 < 25 < 250 < 25 < 25 < 10 < 2505/11/04 TB 20712 40 < 25 < 25 < 25 < 75 731 < 25 < 25 < 25 < 25 < 100 < 20 < 25 < 25 < 250 < 25 < 25 < 10 < 2506/22/04 TB 20784 137 < 25 < 25 < 25 < 75 1570 < 25 < 25 < 25 < 25 < 100 < 20 < 25 < 25 < 250 < 25 74 < 10 J 2208/31/04 TB 21049 7 < 5 < 5 < 5 < 15 92 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 51 < 5 < 5 < 2 < 5

02/10/05 TB 21954 63 < 5 < 5 < 5 < 15 1960 < 5 < 5 42 < 5 < 20 < 4 < 5 < 5 231 < 5 19 < 2 4805/04/05 TB 22408 135 < 5 < 5 < 5 < 15 1590 < 5 < 5 48 < 5 < 20 < 4 < 5 < 5 < 50 < 5 10 < 2 52

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 285 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

AW-006JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: West Road

11/24/96 TB 00777 < 2500 < 2500 < 2500 < 5000 81000 < 2500 < 2500 < 2500 < 5000 < 2500 < 25000 < 2500 8400 < 5000 < 250012/22/96 TB 00936 < 2500 < 2500 < 2500 34000 64000 < 2500 < 2500 < 2500 < 5000 < 2500 < 25000 < 2500 6600 < 5000 < 2500

02/18/97 TB 01732 < 2500 < 2500 < 2500 < 5000 37000 < 2500 < 2500 J 1300 < 5000 < 2500 < 25000 < 2500 2600 < 5000 < 250003/01/97 TB 01801 < 1200 < 1200 < 1200 < 2500 39000 < 1200 < 1200 < 1200 < 2500 < 1200 < 12000 < 1200 2700 < 2500 J 32003/19/97 TB 01894 < 2500 < 2500 < 2500 < 5000 39000 < 2500 < 2500 < 2500 < 5000 < 2500 < 25000 < 2500 2500 < 5000 < 250004/07/97 TB 01976 < 2500 < 2500 7500 < 5000 38000 < 2500 < 2500 < 2500 < 5000 < 2500 < 25000 < 2500 3600 < 5000 < 250005/05/97 TB 02092 42000 < 1000 2500 240008/06/97 TB 02516 25000 200 1900 90011/03/97 TB 03189 < 500 < 500 < 500 1700 19000 < 500 < 500 < 500 < 1000 < 500 13000 < 500 1200 < 1000 < 500

01/31/98 TB 03711 < 500 < 500 < 500 < 2000 14000 < 500 < 1000 < 500 < 1000 < 1000 < 500 < 1000 < 500 1100 < 1500 < 50003/16/98 TB 04014 12000 < 200 630 < 20005/08/98 TB 04489 12000 < 200 410 < 20007/09/98 TB 05014 600 < 250 < 250 < 250 < 1000 D 12000 < 250 < 250 < 500 < 250 < 500 < 500 < 250 < 500 < 2500 < 250 1200 < 750 < 25010/07/98 TB 06082 J 800 < 500 < 500 < 500 < 2000 16000 < 500 < 500 < 1000 < 500 < 1000 < 1000 < 500 < 1000 < 5000 < 500 1500 < 1500 < 50011/04/98 TB 06392 < 10000 < 500 < 500 < 500 < 2000 26000 < 500 < 500 < 1000 < 500 < 1000 < 1000 < 500 < 1000 < 10000 < 500 1600 < 1500 < 50012/01/98 TB 06829 J 1200 < 500 < 500 < 500 < 2000 13000 < 500 < 500 < 1000 < 500 < 1000 < 1000 < 500 < 1000 < 10000 < 500 1100 < 1500 < 500

01/01/99 TB 07083 < 10000 < 500 < 500 < 500 < 2000 14000 < 500 < 500 < 1000 < 500 < 1000 < 1000 < 500 < 1000 < 10000 < 500 1100 < 1500 < 50002/01/99 TB 07340 J 1200 < 500 < 500 < 500 < 2000 14000 < 500 < 500 < 1000 < 500 < 1000 < 1000 < 500 < 1000 < 10000 < 500 1100 < 1500 J 10003/15/99 TB 07749 < 5000 < 250 < 250 < 250 < 1000 11000 < 250 < 250 J 75 < 250 < 500 < 500 < 250 < 500 < 5000 < 250 880 < 750 J 25005/05/99 TB 08230 < 10000 < 500 < 500 < 500 < 2000 14000 < 500 < 500 < 1000 < 500 < 1000 < 1000 < 500 < 1000 < 10000 < 500 J 840 < 1500 < 50008/03/99 TB 09108 < 1000 < 500 < 500 < 500 < 500 15000 < 500 < 500 < 500 < 500 < 5000 < 500 < 500 < 500 < 10000 < 500 1200 < 500 < 50010/07/99 TB 09986 < 500 < 250 < 250 < 250 < 250 8900 < 250 < 250 < 250 < 250 < 2500 < 250 < 250 < 250 < 5000 < 250 350 < 250 < 25011/18/99 TB 10505 660 < 200 < 200 < 200 < 200 6200 < 200 < 200 < 200 < 200 < 2000 < 200 < 200 < 200 < 4000 < 200 300 < 200 < 20012/18/99 TB 10769 960 < 200 < 200 < 200 < 200 6450 < 200 < 200 < 200 < 200 < 2000 < 200 < 200 < 200 < 4000 < 200 J 180 < 200 < 200

02/08/00 TB 11141 < 400 < 200 < 200 < 200 < 200 4230 < 200 < 200 < 200 < 200 < 2000 < 200 < 200 < 200 < 4000 < 200 J 93 < 200 < 20005/05/00 TB 11670 < 400 < 200 < 200 < 200 < 200 4270 < 200 < 200 < 200 < 200 < 2000 < 200 < 200 < 200 < 4000 < 200 J 140 < 200 < 20010/19/00 TB 12853 600 < 100 < 100 < 100 < 100 D 5900 < 100 < 100 < 100 < 100 < 1000 < 100 < 100 < 100 < 2000 < 100 J 58 < 100 < 100

02/03/01 TB 13711 1900 < 125 < 125 < 125 < 125 D 7700 < 125 < 125 < 125 < 125 < 1250 < 125 < 125 < 125 < 2500 < 125 < 125 < 125 < 12505/05/01 TB 14348 < 800 < 400 < 400 < 400 < 400 9500 < 400 < 400 < 400 < 400 < 4000 < 400 < 400 < 400 < 8000 < 400 < 400 < 400 J 24006/01/01 TB 14548 1500 < 125 < 125 < 125 < 125 D 16000 < 125 < 125 < 125 < 125 < 1250 < 125 < 125 < 125 < 2500 < 125 680 < 125 J 200

07/05/01 TB 14715 J 970 < 500 < 500 < 500 < 500 10000 < 500 < 500 < 500 < 500 < 5000 < 500 < 500 < 500 < 10000 < 500 < 500 < 500 < 50008/12/01 TB 14933 1300 < 125 < 125 < 125 < 125 D 7300 < 125 < 125 < 125 < 125 < 1250 < 125 < 125 < 125 < 2500 < 125 < 125 < 125 < 12510/12/01 TB 15327 1100 < 200 < 200 < 200 < 200 7900 < 200 < 200 < 200 < 200 < 2000 < 200 < 200 < 200 < 4000 < 200 < 200 < 200 < 200

02/11/02 TB 16405 490 < 125 < 125 < 125 < 125 4400 < 125 < 125 < 125 < 125 < 1250 < 125 < 125 < 125 < 2500 < 125 J 29 < 125 J 10004/06/02 TB 16801 < 400 < 200 < 200 < 200 < 200 5100 < 200 < 200 < 200 < 200 < 2000 < 200 < 200 < 200 < 4000 < 200 200 < 200 < 20005/25/02 TB 17123 690 < 200 < 200 < 200 < 200 7600 < 200 < 200 < 200 < 200 < 2000 < 200 < 200 < 200 < 4000 < 200 J 100 < 200 J 80

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 286 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

AW-006JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: West Road

06/17/02 TB 17331 J 330 < 200 < 200 < 200 < 200 8300 < 200 < 200 < 200 < 200 < 2000 < 200 < 200 < 200 < 4000 < 200 J 180 < 200 J 12007/16/02 TB 17432 1300 < 200 < 200 < 200 < 200 7800 < 200 < 200 < 200 < 200 < 2000 < 200 < 200 < 200 < 4000 < 200 J 110 < 200 J 12008/06/02 TB 17627 560 < 200 < 200 < 200 < 200 6700 < 200 < 200 < 200 < 200 < 2000 < 200 < 200 < 200 < 4000 < 200 < 200 < 200 J 160

02/25/03 TB 18770 930 < 200 < 200 < 200 < 200 5300 < 200 < 200 < 200 < 200 < 2000 < 200 < 200 < 200 < 4000 < 200 J 81 < 200 J 80

09/01/04 TB 21078 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 510/11/04 TB 21273 < 5 < 5 < 5 < 5 < 15 618 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 12 < 2 J 411/16/04 TB 21419 27 < 20 < 20 < 20 < 60 631 < 20 < 20 < 20 < 20 < 80 < 16 < 20 < 20 < 200 < 20 < 20 < 8 < 2012/09/04 TB 21612 < 5 < 5 < 5 < 5 < 15 13 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

01/18/05 TB 21828 < 5 < 5 < 5 < 5 < 15 13 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

02/10/05 TB 21955 6 < 5 < 5 < 5 < 15 7 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 505/05/05 TB 22446 < 40 < 40 < 40 < 40 < 120 1860 < 40 < 40 < 40 < 40 < 160 < 32 < 40 < 40 744 < 40 43 < 16 J 17

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 287 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

AW-007JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: West Road

02/16/02 TB 16460 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 5

03/06/03 TB 18918 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 508/22/03 TB 19724 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

08/31/04 TB 21051 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 510/11/04 TB 21274 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 511/16/04 TB 21420 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 512/09/04 TB 21613 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

01/18/05 TB 21829 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 502/10/05 TB 21956 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

06/16/05 TB 22690 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 288 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

AW-008JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: West Road

03/06/03 TB 18919 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 508/22/03 TB 19725 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

08/31/04 TB 21052 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 510/11/04 TB 21275 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 511/16/04 TB 21421 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 512/09/04 TB 21614 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

01/18/05 TB 21830 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 502/10/05 TB 21957 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 504/20/05 TB 22398 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 289 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

AW-009JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: West Road

03/06/03 TB 18920 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 5

08/31/04 TB 21053 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 510/11/04 TB 21276 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 511/16/04 TB 21422 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 512/09/04 TB 21615 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

01/18/05 TB 21831 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 502/10/05 TB 21958 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 506/16/05 TB 22692 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 290 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

AW-010JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: West Road

05/08/97 TB 02147 < 2500 < 2500 < 2500 < 5000 60000 < 2500 < 2500 3300 < 5000 < 2500 < 25000 < 2500 13000 < 5000 < 250006/06/97 TB 02232 < 5000 < 5000 < 5000 < 10000 68000 < 5000 < 5000 < 5000 < 10000 < 5000 < 50000 < 5000 15000 < 10000 < 500006/28/97 TB 02346 62000 750 16000 100009/01/97 TB 02729 13000 < 200 940 28011/29/97 TB 03359 < 1300 < 1300 J 610 < 5000 24000 < 1300 < 1300 < 2500 < 1300 < 2500 < 2500 < 1300 < 2500 < 1300 4800 < 3800 < 1300

03/16/98 TB 04015 22000 270 5200 106005/08/98 TB 04490 28000 < 200 5500 88007/09/98 TB 05015 10050 < 250 < 250 < 250 < 1000 E 34000 < 250 < 250 J 330 < 250 < 500 < 500 < 250 < 500 J 1200 < 250 7600 < 750 89009/05/98 TB 05699 < 2000 < 1000 < 1000 < 1000 < 4000 38000 < 1000 < 1000 J 350 < 1000 < 2000 < 2000 < 1000 < 2000 J 9000 < 1000 7400 < 3000 J 30010/07/98 TB 06083 J 1600 < 1000 < 1000 < 1000 < 4000 D 51000 < 1000 < 1000 J 310 < 1000 < 2000 < 2000 < 1000 < 2000 < 20000 < 1000 7700 < 3000 J 240

11/04/98 TB 06384 J 2500 < 500 < 500 < 500 < 2000 D 53000 < 500 < 500 J 300 < 500 < 1000 < 1000 < 500 < 1000 13800 < 500 8600 < 1500 J 200

12/01/98 TB 06830 J 3500 < 500 < 500 < 500 < 2000 D 34000 < 500 < 500 J 280 < 500 < 1000 < 1000 < 500 < 1000 < 10000 < 500 8200 < 1500 J 340

01/01/99 TB 07084 < 50000 < 2500 < 2500 < 2500 < 10000 49000 < 2500 < 2500 < 5000 < 2500 < 5000 < 5000 < 2500 < 5000 < 50000 < 2500 7200 < 7500 < 250002/01/99 TB 07341 J 4400 < 1000 < 1000 < 1000 < 4000 51000 < 1000 < 1000 J 470 < 1000 < 2000 < 2000 < 1000 < 2000 < 20000 < 1000 9300 < 3000 J 42003/15/99 TB 07750 < 20000 < 1000 < 1000 < 1000 < 4000 37000 < 1000 < 1000 J 510 < 1000 < 2000 < 2000 < 1000 < 2000 < 20000 < 1000 7000 < 3000 J 80004/16/99 TB 08057 < 50000 < 2500 < 2500 < 2500 < 10000 62000 < 2500 < 2500 < 5000 < 2500 < 5000 < 5000 < 2500 < 5000 < 50000 < 2500 8900 < 7500 < 250005/05/99 TB 08231 < 25000 < 1250 < 1250 < 1250 < 5000 52000 < 1250 < 1250 < 2500 < 1250 < 2500 < 2500 < 1250 < 2500 < 25000 < 1250 7600 < 3750 < 125006/11/99 TB 08627 < 25000 < 1250 < 1250 < 1250 < 5000 41000 < 1250 < 1250 < 2500 < 1250 < 2500 < 2500 < 1250 < 2500 < 25000 < 1250 5700 < 3750 < 125007/06/99 TB 08900 J 440 < 1250 < 1250 J 620 J 4300 23000 < 1250 < 1250 < 2500 < 1250 < 2500 < 2500 < 1250 < 2500 59000 < 1250 3300 < 3750 < 125008/03/99 TB 09109 1400 < 500 < 500 < 500 < 500 19000 < 500 < 500 < 500 < 500 < 5000 < 500 < 500 < 500 < 10000 < 500 2800 < 500 < 50009/09/99 TB 09636 < 1000 < 500 < 500 < 500 < 500 14000 < 500 < 500 < 500 < 500 < 5000 < 500 < 500 < 500 < 10000 < 500 1600 < 500 < 50010/07/99 TB 09987 1100 < 500 < 500 < 500 < 500 10000 < 500 < 500 < 500 < 500 < 5000 < 500 < 500 < 500 < 10000 < 500 1300 < 500 < 50011/18/99 TB 10506 1000 < 200 < 200 < 200 < 200 5000 < 200 < 200 < 200 < 200 < 2000 < 200 < 200 < 200 36000 < 200 730 < 200 < 20012/18/99 TB 10770 1400 < 200 < 200 < 200 < 200 5170 < 200 < 200 < 200 < 200 < 2000 < 200 < 200 < 200 < 4000 < 200 330 < 200 < 200

02/20/00 TB 11260 1700 < 125 < 125 < 125 < 125 5400 < 125 < 125 < 125 < 125 < 1250 < 125 < 125 < 125 < 2500 < 125 620 < 125 J 17504/05/00 TB 11474 < 800 < 400 < 400 < 400 < 400 13000 < 400 < 400 < 400 < 400 < 4000 < 400 < 400 < 400 < 8000 < 400 460 < 400 < 40005/05/00 TB 11671 < 400 < 200 < 200 < 200 < 200 4620 < 200 < 200 < 200 < 200 < 2000 < 200 < 200 < 200 < 4000 < 200 J 83 < 200 < 20007/07/00 TB 12112 < 250 < 125 < 125 < 125 < 125 3600 < 125 < 125 < 125 < 125 < 1250 < 125 < 125 < 125 < 2500 < 125 < 125 < 125 < 12510/19/00 TB 12854 870 < 100 < 100 < 100 < 100 2100 < 100 < 100 < 100 < 100 < 1000 < 100 < 100 < 100 < 2000 < 100 < 100 < 100 < 10012/07/00 TB 13367 1300 < 125 < 125 < 125 < 125 2800 < 125 < 125 < 125 < 125 < 1250 < 125 < 125 < 125 < 2500 < 125 180 < 125 < 125

02/03/01 TB 13712 860 < 125 < 125 < 125 < 125 3400 < 125 < 125 < 125 < 125 < 1250 < 125 < 125 < 125 < 2500 < 125 < 125 < 125 < 12505/05/01 TB 14349 1300 < 125 < 125 < 125 < 125 D 3600 < 125 < 125 < 125 < 125 < 1250 < 125 < 125 < 125 3700 < 125 210 < 125 J 175

05/30/01 TB 14527 380 < 80 < 80 < 80 < 80 2200 < 80 < 80 < 80 < 80 < 800 < 80 < 80 < 80 2000 < 80 110 < 80 J 96

06/01/01 TB 14549 2700 < 125 < 125 < 125 < 125 2600 < 125 < 125 < 125 < 125 < 1250 < 125 < 125 < 125 < 2500 < 125 190 < 125 < 12507/05/01 TB 14716 390 < 80 < 80 < 80 < 80 2100 < 80 < 80 < 80 < 80 < 800 < 80 < 80 < 80 31000 < 80 J 79 < 80 J 9608/12/01 TB 14934 300 < 40 < 40 < 40 < 40 930 < 40 < 40 < 40 < 40 < 400 < 40 < 40 < 40 960 < 40 47 < 40 J 5612/07/01 TB 15896 180 < 25 < 25 < 25 < 25 D 1400 < 25 < 25 < 25 < 25 < 250 < 25 < 25 < 25 D 1200 < 25 J 14 < 25 J 75

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 291 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

AW-010JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: West Road

02/11/02 TB 16406 760 < 25 < 25 < 25 < 25 D 9300 < 25 < 25 J 9 < 25 < 250 < 25 < 25 < 25 J 470 < 25 300 < 25 17504/06/02 TB 16802 250 < 50 < 50 < 50 < 50 D 17000 < 50 < 50 64 < 50 < 500 < 50 < 50 < 50 < 1000 < 50 1900 < 50 34005/25/02 TB 17124 370 < 50 < 50 < 50 < 50 D 15000 < 50 < 50 56 < 50 < 500 < 50 < 50 < 50 2400 < 50 1000 < 50 26009/05/02 TB 17864 310 < 50 < 50 < 50 < 50 D 6000 < 50 < 50 J 36 < 50 < 500 < 50 < 50 < 50 2000 < 50 120 < 50 J 40

01/21/03 TB 18498 D 529 < 5 < 5 < 5 < 5 D 6900 < 5 < 5 30 < 5 < 50 < 5 < 5 < 5 1000 < 5 140 < 5 15603/04/03 TB 18879 < 400 < 200 < 200 < 200 < 200 4800 < 200 < 200 < 200 < 200 < 2000 < 200 < 200 < 200 < 4000 < 200 J 57 < 200 J 12005/09/03 TB 19229 < 5 < 5 < 5 < 5 < 15 166 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 6 < 2 < 5

09/01/04 TB 21079 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 71 < 5 < 5 < 2 < 510/11/04 TB 21277 < 5 < 5 < 5 < 5 < 15 42 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 66 < 5 < 5 < 2 < 5

11/16/04 TB 21423 < 5 < 5 < 5 < 5 < 15 100 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 349 < 5 < 5 < 2 < 512/09/04 TB 21616 < 5 < 5 < 5 < 5 < 15 367 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 644 < 5 < 5 < 2 J 2

01/18/05 TB 21842 < 10 < 10 < 10 < 10 < 30 998 < 10 < 10 < 10 < 10 < 40 < 8 < 10 < 10 1960 < 10 < 10 < 4 < 1002/10/05 TB 21959 < 10 < 10 < 10 < 10 < 30 917 < 10 < 10 < 10 < 10 < 40 < 8 < 10 < 10 1900 < 10 < 10 < 4 < 1006/16/05 TB 22693 < 25 < 25 < 25 < 25 < 75 1030 < 25 < 25 < 25 < 25 < 100 < 20 < 25 < 25 2130 < 25 < 25 < 10 < 25

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 292 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

AW-011JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: West Road

05/11/97 TB 02167 < 5 < 5 < 5 < 10 53 < 5 < 5 < 5 < 10 < 5 < 50 < 5 15 < 10 < 5

03/11/03 TB 18976 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 508/22/03 TB 19726 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

03/02/04 TB 20550 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 508/31/04 TB 21054 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 510/08/04 TB 21263 < 5 < 5 < 5 < 5 J 16 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 511/16/04 TB 21424 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 512/09/04 TB 21617 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

01/18/05 TB 21832 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

02/10/05 TB 21960 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 505/04/05 TB 22409 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 293 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

AW-012JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: West Road

12/11/97 TB 03454 < 5 < 5 < 5 < 10 < 5 < 5 < 5 < 5 < 10 < 5 < 50 < 5 < 5 < 10 < 5

03/06/03 TB 18921 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 5

03/02/04 TB 20551 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 509/01/04 TB 21080 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 510/11/04 TB 21278 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 511/16/04 TB 21425 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 512/09/04 TB 21618 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

01/18/05 TB 21843 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 502/10/05 TB 21961 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

05/05/05 TB 22451 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 294 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

AW-014JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: West Road

12/11/97 TB 03456 < 5 < 5 < 5 < 10 < 5 < 5 < 5 < 5 < 10 < 5 J 35 < 5 < 5 < 10 < 512/21/97 TB 03533 < 5 < 5 < 5 < 10 < 5 < 5 < 5 < 5 < 10 < 5 < 50 < 5 < 5 < 10 < 5

01/01/98 TB 03566 < 5 < 5 < 5 < 20 < 5 < 5 < 5 < 10 < 5 < 10 < 10 < 5 < 10 < 5 < 10 < 15 < 501/05/98 TB 03583 < 5 < 5 < 5 < 10 < 5 < 5 < 5 < 5 < 10 < 5 J 43 < 5 < 5 < 10 < 502/01/98 TB 03709 < 25 < 25 < 25 < 100 < 25 < 25 < 50 < 25 < 50 < 50 < 25 < 50 < 25 < 50 < 75 < 25

03/04/03 TB 18880 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 505/09/03 TB 19230 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 508/13/03 TB 19625 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 511/12/03 TB 19999 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 79 < 5 < 5 < 2 < 5

12/02/03 TB 20115 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

03/02/04 TB 20552 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 509/01/04 TB 21081 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

02/10/05 TB 21962 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 91 < 5 < 5 < 2 < 505/17/05 TB 22530 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 295 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

AW-019JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: West Road

04/07/98 TB 04242 < 5 < 5 < 5 < 5 10 < 5 < 5 < 5 < 5 < 10 < 5 < 50 < 5 < 5 < 10 < 5

03/11/03 TB 18968 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 508/22/03 TB 19727 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

03/02/04 TB 20553 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 508/31/04 TB 21055 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 510/08/04 TB 21264 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 511/16/04 TB 21426 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 512/09/04 TB 21619 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

01/18/05 TB 21833 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

02/10/05 TB 21963 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 504/15/05 TB 22382 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 296 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

AW-030JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: West Road

05/30/98 TB 04649 < 5 < 5 < 5 < 20 < 5 < 5 < 5 < 10 < 5 < 10 < 10 < 5 < 10 < 10 < 5 < 10 < 15 < 507/02/98 TB 04868 E 2100 J 4 < 5 5 < 20 D 700 < 5 < 5 J 7 < 5 < 10 < 10 < 5 < 10 J 23 < 5 41 < 15 2908/27/98 TB 05665 310010/07/98 TB 06084 235 < 25 < 25 < 25 < 100 D 3400 < 25 30 < 50 < 25 < 50 < 50 < 25 < 50 < 250 < 25 130 < 75 J 2510/19/98 TB 06211 J 63 < 100 < 100 < 100 < 400 3400 < 100 J 38 < 200 < 100 < 200 < 200 < 100 < 200 < 10000 < 100 J 100 < 300 < 10010/31/98 TB 06320 < 2000 < 100 < 100 < 100 < 400 3500 < 100 < 100 < 200 < 100 < 200 < 200 < 100 < 200 < 1000 < 100 J 140 < 300 < 10012/01/98 TB 06821 < 2000 < 100 < 100 < 100 < 400 4600 < 100 < 100 < 200 < 100 < 200 < 200 < 100 < 200 < 2000 < 100 J 120 < 300 < 100

01/01/99 TB 07086 < 5000 < 250 < 250 < 250 < 1000 6800 < 250 < 250 < 500 < 250 < 500 < 500 < 250 < 500 < 5000 < 250 J 190 < 750 < 25001/31/99 TB 07333 J 83 < 125 < 125 < 125 < 500 6000 < 125 < 125 < 250 < 125 < 250 < 250 < 125 < 250 < 2500 < 125 J 70 < 375 < 12503/15/99 TB 07751 < 500 < 25 < 25 < 25 < 100 D 4600 < 25 J 10 < 50 < 25 < 50 < 50 < 25 < 50 < 500 < 25 70 < 75 J 60

04/16/99 TB 08061 < 2000 < 100 < 100 < 100 < 400 3800 < 100 < 100 < 200 < 100 < 200 < 200 < 100 < 200 < 2000 < 100 < 200 < 300 < 10005/05/99 TB 08236 < 2000 < 100 < 100 < 100 < 400 3900 < 100 < 100 < 200 < 100 < 200 < 200 < 100 < 200 < 2000 < 100 J 28 < 300 < 10007/06/99 TB 08901 < 2000 < 100 < 100 < 100 < 400 2600 < 100 < 100 < 200 < 100 < 200 < 200 < 100 < 200 < 2000 < 100 < 200 < 300 < 10007/28/99 TB 09059 < 160 < 80 < 80 < 80 < 80 2100 < 80 < 80 < 80 < 80 < 800 < 80 < 80 < 80 < 1600 < 80 J 38 < 80 < 8007/29/99 TB 09062 < 160 < 80 < 80 < 80 < 80 3100 < 80 < 80 < 80 < 80 < 800 < 80 < 80 < 80 < 1600 < 80 83 < 80 < 8008/03/99 TB 09113 < 160 < 80 < 80 < 80 < 80 2700 < 80 < 80 < 80 < 80 < 800 < 80 < 80 < 80 < 1600 < 80 < 80 < 80 < 8010/07/99 TB 09992 J 77 < 80 < 80 < 80 < 80 3400 < 80 < 80 < 80 < 80 < 800 < 80 < 80 < 80 < 1600 < 80 J 33 < 80 < 8011/18/99 TB 10511 J 210 < 125 < 125 < 125 < 125 2700 < 125 < 125 < 125 < 125 < 1250 < 125 < 125 < 125 < 2500 < 125 < 125 < 125 < 12512/18/99 TB 10775 < 250 < 125 < 125 < 125 < 125 3300 < 125 < 125 < 125 < 125 < 1250 < 125 < 125 < 125 < 2500 < 125 < 125 < 125 < 125

04/05/00 TB 11482 < 160 < 80 < 80 < 80 < 80 2200 < 80 < 80 < 80 < 80 < 800 < 80 < 80 < 80 < 1600 < 80 < 80 < 80 < 8005/05/00 TB 11676 < 160 < 80 < 80 < 80 < 80 2190 < 80 < 80 < 80 < 80 < 800 < 80 < 80 < 80 < 1600 < 80 < 80 < 80 < 8010/23/00 TB 12897 < 160 < 80 < 80 < 80 < 80 D 21000 < 80 < 80 < 80 < 80 < 800 < 80 < 80 < 80 < 1600 < 80 630 < 80 J 9612/07/00 TB 13371 2100 < 80 < 80 < 80 < 80 D 12000 < 80 < 80 < 80 < 80 < 800 < 80 < 80 < 80 < 1600 < 80 J 64 < 80 J 53

01/05/01 TB 13513 < 160 < 80 < 80 < 80 < 80 D 8200 < 80 < 80 < 80 < 80 < 800 < 80 < 80 < 80 < 1600 < 80 < 80 < 80 < 8002/02/01 TB 13693 510 < 80 < 80 < 80 < 80 D 11000 < 80 < 80 < 80 < 80 < 800 < 80 < 80 < 80 < 1600 < 80 < 80 < 80 < 8005/05/01 TB 14350 4100 < 200 < 200 < 200 < 200 D 11000 < 200 < 200 < 200 < 200 < 2000 < 200 < 200 < 200 < 4000 < 200 < 200 < 200 J 12005/16/01 TB 14476 4900 < 400 < 400 < 400 < 400 11000 < 400 < 400 < 400 < 400 < 4000 < 400 < 400 < 400 < 8000 < 400 < 400 < 400 J 8007/06/01 TB 14726 J 370 < 200 < 200 < 200 < 200 D 9300 < 200 < 200 < 200 < 200 < 2000 < 200 < 200 < 200 < 4000 < 200 < 200 < 200 < 20008/12/01 TB 14935 370 < 50 < 50 < 50 < 50 D 6700 < 50 < 50 < 50 < 50 < 500 < 50 < 50 < 50 < 1000 < 50 59 < 50 J 4010/24/01 TB 15382 J 300 < 200 < 200 < 200 < 200 8100 < 200 < 200 < 200 < 200 < 2000 < 200 < 200 < 200 < 4000 < 200 < 200 < 200 < 20012/07/01 TB 15901 560 < 25 < 25 < 25 < 25 D 9200 < 25 < 25 < 25 < 25 < 250 < 25 < 25 < 25 < 500 < 25 44 < 25 115

02/11/02 TB 16411 J 420 < 250 < 250 < 250 < 250 8400 < 250 < 250 < 250 < 250 < 2500 < 250 < 250 < 250 < 5000 < 250 < 250 < 250 < 25004/06/02 TB 16803 J 21 < 13 < 13 < 13 < 13 490 < 13 < 13 < 13 < 13 < 125 < 13 < 13 < 13 320 < 13 < 13 < 13 J 15

05/25/02 TB 17125 550 < 250 < 250 < 250 < 250 11000 < 250 < 250 < 250 < 250 < 2500 < 250 < 250 < 250 < 5000 < 250 J 95 < 250 < 25006/17/02 TB 17332 490 < 200 < 200 < 200 < 200 8200 < 200 < 200 < 200 < 200 < 2000 < 200 < 200 < 200 < 4000 < 200 J 100 < 200 < 20007/16/02 TB 17433 J 480 < 250 < 250 < 250 < 250 7500 < 250 < 250 < 250 < 250 < 2500 < 250 < 250 < 250 < 5000 < 250 < 250 < 250 J 5008/06/02 TB 17628 < 160 < 80 < 80 < 80 < 80 2700 < 80 < 80 < 80 < 80 < 800 < 80 < 80 < 80 < 1600 < 80 < 80 < 80 < 80

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 297 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

AW-030JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: West Road

02/25/03 TB 18771 73 < 25 < 25 < 25 < 25 870 < 25 < 25 < 25 < 25 < 250 < 25 < 25 < 25 < 500 < 25 J 10 < 25 < 25

09/01/04 TB 21084 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 510/08/04 TB 21265 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 511/17/04 TB 21433 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 512/09/04 TB 21620 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

01/18/05 TB 21834 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 502/10/05 TB 21964 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 506/16/05 TB 22694 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 298 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

AW-034JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: West Road

05/30/98 TB 04647 < 5 < 5 < 5 < 20 < 5 < 5 < 5 < 10 < 5 < 10 < 10 < 5 < 10 < 10 < 5 < 10 < 15 < 507/02/98 TB 04872 < 10 < 5 < 5 < 5 < 20 < 5 < 5 < 5 < 10 < 5 < 10 < 10 < 5 < 10 < 50 < 5 < 10 < 15 < 508/27/98 TB 05669 350011/05/98 TB 06421 < 100 < 5 < 5 < 5 < 20 < 5 < 5 < 5 < 10 < 5 < 10 < 10 < 5 < 10 < 100 < 5 < 10 < 15 < 512/01/98 TB 06827 J 10 < 5 < 5 < 5 < 20 130 < 5 J 4 < 10 < 5 < 10 < 10 < 5 < 10 < 100 < 5 < 10 < 15 < 5

01/01/99 TB 07089 < 100 < 5 < 5 < 5 < 20 < 5 < 5 < 5 < 10 < 5 < 10 < 10 < 5 < 10 < 100 < 5 < 10 < 15 < 501/31/99 TB 07337 J 59 < 5 < 5 < 5 < 20 D 390 < 5 J 2 < 10 < 5 < 10 < 10 < 5 < 10 < 100 < 5 J 2 < 15 J 705/05/99 TB 08240 < 100 < 5 < 5 < 5 < 20 D 440 < 5 J 1 < 10 < 5 < 10 < 10 < 5 < 10 < 100 < 5 J 2 < 15 608/03/99 TB 09117 34 < 10 < 10 < 10 < 10 D 440 < 10 < 10 < 10 < 10 < 100 < 10 < 10 < 10 < 200 < 10 J 2 < 10 J 710/07/99 TB 09996 57 < 10 < 10 < 10 < 10 D 760 < 10 < 10 < 10 < 10 < 100 < 10 < 10 < 10 < 200 < 10 < 10 < 10 < 10

11/18/99 TB 10515 88 < 5 < 5 < 5 < 5 D 840 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 590 < 5 < 5 < 5 J 11

12/18/99 TB 10779 < 50 < 25 < 25 < 25 < 25 650 < 25 < 25 < 25 < 25 < 250 < 25 < 25 < 25 < 500 < 25 < 25 < 25 < 25

02/11/00 TB 11173 < 25 < 13 < 13 < 13 < 13 350 < 13 < 13 < 13 < 13 < 125 < 13 < 13 < 13 < 250 < 13 < 13 < 13 < 1305/05/00 TB 11680 < 10 < 5 < 5 < 5 < 5 170 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 510/19/00 TB 12862 < 10 < 5 < 5 < 5 < 5 48 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 5

02/02/01 TB 13696 < 10 < 5 < 5 < 5 < 5 26 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 505/05/01 TB 14354 < 10 < 5 < 5 < 5 < 5 D 440 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 508/18/01 TB 15020 26 < 5 < 5 < 5 < 5 210 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 5

02/11/02 TB 16415 49 < 5 < 5 < 5 < 5 D 410 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 10 < 5 J 809/14/02 TB 17921 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 511/07/02 TB 18155 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 5

01/21/03 TB 18500 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 503/06/03 TB 18934 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 5

09/02/04 TB 21086 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 510/08/04 TB 21266 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 511/16/04 TB 21427 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 512/09/04 TB 21621 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

01/18/05 TB 21844 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 502/10/05 TB 21965 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

05/04/05 TB 22411 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 299 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

MW-034JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: West Road

02/08/96 TB 01811 < 1000 < 500 < 1000 20000 < 500 < 1000 < 5000 < 500 < 1000 < 50007/18/96 TB 00082 2 < 250 < 250 < 250 < 500 3600 < 250 < 250 < 250 < 250 < 500 < 250 < 250 < 5000 < 250 < 250 < 500 < 25012/22/96 TB 00931 < 5 < 5 36 < 10 14 < 5 < 5 < 5 < 10 < 5 < 50 < 5 < 5 < 10 9

02/18/97 TB 01728 < 5 < 5 < 5 < 10 < 5 < 5 < 5 < 5 < 10 < 5 160 < 5 < 5 < 10 < 503/19/97 TB 01895 < 5 < 5 < 5 < 10 < 5 < 5 < 5 < 5 < 10 < 5 130 < 5 < 5 < 10 < 504/07/97 TB 01969 < 5 < 5 < 5 < 10 < 5 < 5 < 5 < 5 < 10 < 5 < 50 < 5 < 5 < 10 < 506/06/97 TB 02235 < 5 < 5 < 5 < 508/06/97 TB 02517 37 < 5 < 5 < 511/03/97 TB 03190 < 5 < 5 < 5 < 10 J 3 < 5 < 5 < 5 < 10 < 5 < 50 < 5 < 5 < 10 < 5

02/01/98 TB 03710 < 5 < 5 < 5 < 20 < 5 < 5 < 10 < 5 < 10 < 10 < 5 < 10 < 5 < 10 < 15 < 507/20/98 TB 05147 < 10 < 5 < 5 < 5 < 20 < 5 < 5 < 5 < 10 < 5 < 10 < 10 < 5 < 10 < 50 < 5 < 10 < 15 < 5

02/01/99 TB 07348 < 100 < 5 < 5 < 5 < 20 < 5 < 5 < 5 < 10 < 5 < 10 < 10 < 5 < 10 < 100 < 5 < 10 < 15 < 508/04/99 TB 09129 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 511/18/99 TB 10527 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 5

10/19/00 TB 12870 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 5

02/02/01 TB 13697 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 508/12/01 TB 14938 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 5

02/16/02 TB 16461 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 505/28/02 TB 17150 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 509/03/02 TB 17857 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 5

03/06/03 TB 18936 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 5

10/11/04 TB 21279 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 511/16/04 TB 21428 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 512/09/04 TB 21622 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

01/18/05 TB 21835 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 502/10/05 TB 21969 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 506/16/05 TB 22696 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 300 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

MW-034 EW1JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: West Road

06/04/96 TB 01290 1500 < 1000 < 1000 < 1000 < 2000 28000 < 1000 < 1000 < 1000 < 2000 < 1000 < 10000 < 1000 2000 < 2000 < 100007/18/96 TB 00088 < 1 < 5 < 5 84 33 8700 < 5 < 5 11 < 5 < 10 < 5 < 5 < 100 < 5 510 < 10 8708/25/96 TB 00294 < 250 < 250 < 250 < 500 11000 < 250 < 250 < 250 < 250 < 500 < 250 < 250 < 5000 < 250 570 < 500 < 25009/18/96 TB 00487 < 250 < 250 260 < 500 7100 < 250 < 250 < 250 < 250 < 500 < 250 < 250 < 5000 < 250 430 < 500 < 25010/16/96 TB 00572 < 250 < 250 < 250 < 500 7900 < 250 < 250 < 250 < 500 < 250 < 2500 < 250 < 250 < 500 < 25011/24/96 TB 00782 < 100 < 100 < 100 < 200 1800 < 100 < 100 < 100 < 200 < 100 < 1000 < 100 < 100 < 200 < 10012/22/96 TB 00932 < 100 < 100 < 100 < 200 1900 < 100 < 100 < 100 < 200 < 100 < 1000 < 100 < 100 < 200 < 100

02/18/97 TB 01727 < 250 < 250 < 250 < 500 6000 < 250 < 250 < 250 < 500 < 250 < 2500 < 250 < 250 < 500 < 25003/01/97 TB 01795 < 250 < 250 < 250 < 500 5800 < 250 < 250 < 250 < 500 < 250 < 2500 < 250 < 250 < 500 < 25003/19/97 TB 01890 < 250 < 250 < 250 < 500 5200 < 250 < 250 < 250 < 500 < 250 < 2500 < 250 < 250 < 500 < 250

04/07/97 TB 01972 < 250 < 250 < 250 < 500 5000 < 250 < 250 J 220 < 500 < 250 < 2500 < 250 J 200 < 500 < 25006/28/97 TB 02344 54 < 10 < 10 < 1009/01/97 TB 02727 14000 < 200 1200 < 20009/30/97 TB 02927 < 5 < 5 < 5 < 10 43 < 5 < 5 < 5 < 10 < 5 < 50 < 5 J 3 < 10 < 511/03/97 TB 03187 < 5 < 5 < 5 < 10 59 < 5 < 5 < 5 < 10 < 5 < 50 < 5 J 4 < 10 < 511/29/97 TB 03357 < 5 < 5 < 5 < 20 31 < 5 < 5 < 10 < 5 36 < 10 < 5 < 10 < 5 < 10 < 15 < 5

01/01/98 TB 03564 < 5 < 5 < 5 < 20 10 < 5 < 5 < 10 < 5 < 10 < 10 < 5 < 10 < 5 < 10 < 15 < 501/31/98 TB 03707 < 5 < 5 < 5 < 20 10 < 5 < 10 < 5 < 10 < 10 < 5 < 10 < 5 < 10 < 15 < 503/16/98 TB 04011 < 5 < 5 < 5 J 8 15 < 5 < 5 < 5 < 10 < 5 < 50 < 5 < 5 < 10 < 5

03/06/03 TB 18937 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 505/09/03 TB 19234 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 508/13/03 TB 19628 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 511/12/03 TB 20001 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

09/02/04 TB 21089 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 510/08/04 TB 21267 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 511/16/04 TB 21429 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 512/09/04 TB 21623 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

01/18/05 TB 21836 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 502/10/05 TB 21967 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 506/16/05 TB 22697 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 301 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

MW-034 IW1JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: West Road

04/09/96 TB 01543 < 10 < 5 < 5 < 5 < 10 < 5 < 5 < 5 < 5 < 10 < 5 < 50 < 5 < 5 < 10 < 5

03/06/03 TB 18938 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 505/09/03 TB 19235 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 508/13/03 TB 19629 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 511/12/03 TB 20000 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

05/04/05 TB 22413 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 302 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

MW-062JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: West Road

08/26/97 TB 02706 < 5 < 5 < 5 < 5

04/04/98 TB 04187 < 5 < 5 < 5 < 5 < 10 < 5 < 5 < 5 < 5 < 10 < 5 < 50 < 5 < 5 < 10 < 5

02/01/99 TB 07342 < 100 < 5 < 5 < 5 < 20 < 5 < 5 < 5 < 10 < 5 < 10 < 10 < 5 < 10 < 100 < 5 < 10 < 15 < 508/04/99 TB 09125 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 5

10/30/00 TB 13045 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 5

02/02/01 TB 13698 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 508/12/01 TB 14945 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 5

02/16/02 TB 16463 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 5

05/29/02 TB 17153 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 509/03/02 TB 17858 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 5

03/06/03 TB 18939 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 5

09/02/04 TB 21090 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 510/08/04 TB 21268 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 511/16/04 TB 21430 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 512/09/04 TB 21624 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

01/18/05 TB 21845 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 502/10/05 TB 21968 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 506/15/05 TB 22681 < 5 < 5 < 5 < 5 J 30 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 303 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

MW-074JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: West Road

04/17/96 TB 01578 < 10 4 < 5 8 < 10 36 < 5 < 5 < 5 < 10 < 5 < 50 < 5 < 5 < 10 < 5

05/05/97 TB 02093 < 5 < 5 < 5 < 508/06/97 TB 02518 < 5 < 5 < 5 < 511/03/97 TB 03191 < 5 < 5 < 5 < 10 < 5 < 5 < 5 < 5 < 10 < 5 < 50 < 5 < 5 < 10 < 5

02/01/98 TB 03723 < 5 < 5 < 5 < 20 < 5 < 5 < 10 < 5 J 2 < 10 < 5 < 10 < 5 < 10 < 15 < 5

02/01/99 TB 07343 < 100 < 5 < 5 < 5 < 20 < 5 < 5 < 5 < 10 < 5 < 10 < 10 < 5 < 10 < 100 < 5 < 10 < 15 < 508/04/99 TB 09126 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 5

02/08/00 TB 11146 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 5

10/19/00 TB 12871 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 5

02/02/01 TB 13699 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 508/12/01 TB 14940 < 10 < 5 < 5 J 4 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 5

02/16/02 TB 16464 < 10 < 5 < 5 J 3 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 505/28/02 TB 17151 < 10 < 5 < 5 J 4 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 509/03/02 TB 17860 < 10 J 1 < 5 J 3 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 5

03/06/03 TB 18940 < 10 < 5 < 5 J 3 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 505/09/03 TB 19236 < 5 < 5 < 5 6 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 508/12/03 TB 19582 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 511/12/03 TB 19997 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

05/04/05 TB 22415 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 304 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

MW-075JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: West Road

04/23/96 TB 01579 76 < 5 < 5 < 5 < 10 140 < 5 4 < 5 < 10 < 5 < 5 61 < 10 2410/23/96 TB 00615 < 5 < 5 < 5 < 10 44 < 5 < 5 < 5 < 10 < 5 < 50 < 5 19 < 10 912/15/96 TB 00855 < 5 < 5 < 5 24 < 5 < 5 < 5 < 5 < 10 < 5 < 50 < 5 < 5 < 10 < 5

01/02/97 TB 00945 < 5 < 5 < 5 < 10 < 5 < 5 < 5 < 5 < 10 < 5 < 50 < 5 < 5 < 10 < 503/01/97 TB 01797 < 5 < 5 < 5 < 10 < 5 < 5 < 5 < 5 < 10 < 5 < 50 < 5 < 5 < 10 < 503/19/97 TB 01896 < 5 < 5 < 5 < 10 < 5 < 5 < 5 < 5 < 10 < 5 50 < 5 < 5 < 10 < 504/07/97 TB 01970 < 5 < 5 < 5 < 10 < 5 < 5 < 5 < 5 < 10 < 5 < 50 < 5 < 5 < 10 < 5

04/04/98 TB 04188 < 5 < 5 < 5 < 5 < 10 < 5 < 5 < 5 < 5 < 10 < 5 < 50 < 5 < 5 < 10 < 5

02/01/99 TB 07349 < 100 < 5 < 5 < 5 < 20 < 5 < 5 < 5 < 10 < 5 < 10 < 10 < 5 < 10 < 100 < 5 < 10 < 15 < 5

08/04/99 TB 09130 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 5

02/08/00 TB 11147 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 510/19/00 TB 12872 < 10 < 5 < 5 < 5 < 5 D 370 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 27 < 5 < 5

01/05/01 TB 13508 < 10 < 5 < 5 < 5 < 5 140 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 18 < 5 < 502/08/01 TB 13753 < 10 < 5 < 5 < 5 < 5 J 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 506/01/01 TB 14551 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 508/12/01 TB 14941 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 5

02/16/02 TB 16465 33 < 5 < 5 < 5 8 100 < 5 < 5 J 5 < 5 < 50 < 5 < 5 < 5 270 < 5 16 < 5 J 605/29/02 TB 17154 18 < 5 < 5 < 5 < 5 57 < 5 < 5 7 < 5 < 50 < 5 < 5 < 5 450 < 5 J 3 < 5 J 809/05/02 TB 17870 10 < 5 < 5 < 5 < 5 58 < 5 < 5 J 4 < 5 < 50 < 5 < 5 < 5 530 < 5 J 4 < 5 J 4

03/06/03 TB 18941 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 J 2 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 J 2

09/02/04 TB 21091 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 510/08/04 TB 21269 < 5 < 5 < 5 < 5 < 15 14 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 68 < 5 < 5 < 2 < 511/17/04 TB 21434 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 215 < 5 < 5 < 2 < 512/09/04 TB 21625 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 268 < 5 < 5 < 2 < 5

01/18/05 TB 21837 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 171 < 5 < 5 < 2 < 502/10/05 TB 21970 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 135 < 5 < 5 < 2 < 505/05/05 TB 22454 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 125 < 5 < 5 < 2 < 5

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 305 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

MW-078JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: West Road

04/24/96 TB 01582 3100 < 2500 < 2500 < 2500 < 5000 71000 < 2500 < 2500 < 2500 < 5000 < 2500 < 2500 6900 < 5000 < 2500

01/02/97 TB 03571 < 1300 < 1300 < 1300 < 5000 38000 < 1300 < 1300 < 2500 < 1300 < 2500 < 2500 < 1300 < 2500 < 1300 4300 < 3800 < 130002/18/97 TB 01734 < 2500 < 2500 < 2500 < 5000 48000 < 2500 < 2500 < 2500 < 5000 < 2500 < 25000 < 2500 8300 < 5000 < 250006/06/97 TB 02234 2700 < 500 < 500 < 50009/01/97 TB 02730 1600 < 10 20 1311/30/97 TB 03370 < 1300 < 1300 J 790 < 5000 31000 < 1300 < 1300 < 2500 < 1300 < 2500 < 2500 < 1300 < 2500 < 1300 3600 < 3800 < 1300

03/16/98 TB 04016 20000 < 200 2000 < 20005/11/98 TB 04518 1300 < 10 13 < 1007/09/98 TB 05026 < 50 < 25 < 25 < 25 < 100 D 1100 < 25 < 25 < 50 < 25 < 50 < 50 < 25 < 50 < 250 < 25 < 50 < 75 < 25

11/04/98 TB 06387 1600 < 25 < 25 < 25 < 100 D 22000 < 25 < 25 360 < 25 < 50 < 50 < 25 < 50 < 500 < 25 1800 < 75 180

01/09/99 TB 07178 < 5000 < 250 < 250 < 250 < 1000 D 8200 < 250 < 250 < 500 < 250 < 500 < 500 < 250 < 500 < 5000 < 250 J 66 < 750 < 25002/01/99 TB 07346 < 20000 < 1000 < 1000 < 1000 < 4000 11000 < 1000 < 1000 < 2000 < 1000 < 2000 < 2000 < 1000 < 2000 < 20000 < 1000 < 2000 < 3000 < 100003/18/99 TB 07796 < 10000 < 500 < 500 < 500 < 2000 12000 < 500 < 500 < 1000 < 500 < 1000 < 1000 < 500 < 1000 < 10000 < 500 J 200 < 1500 < 50004/17/99 TB 08064 < 5000 < 250 < 250 < 250 < 1000 10000 < 250 < 250 < 500 < 250 < 500 < 500 < 250 < 500 < 5000 < 250 J 130 < 750 < 25008/04/99 TB 09128 < 200 < 100 < 100 < 100 < 100 3100 < 100 < 100 < 100 < 100 < 1000 < 100 < 100 < 100 < 2000 < 100 < 100 < 100 < 100

02/08/00 TB 11149 < 1600 < 800 < 800 < 800 < 800 28100 < 800 < 800 < 800 < 800 < 8000 < 800 < 800 < 800 < 16000 < 800 J 390 < 800 < 80010/23/00 TB 12899 < 2000 < 1000 < 1000 < 1000 < 1000 23000 < 1000 < 1000 < 1000 < 1000 < 10000 < 1000 < 1000 < 1000 < 20000 < 1000 < 1000 < 1000 < 1000

02/08/01 TB 13755 < 400 < 200 < 200 < 200 < 200 6300 < 200 < 200 < 200 < 200 < 2000 < 200 < 200 < 200 < 4000 < 200 < 200 < 200 < 20006/01/01 TB 14552 < 25 < 13 < 13 J 13 < 13 340 < 13 < 13 < 13 < 13 < 125 < 13 < 13 < 13 < 250 < 13 < 13 < 13 < 1308/12/01 TB 14943 250 < 100 < 100 < 100 < 100 2400 < 100 < 100 < 100 < 100 < 1000 < 100 < 100 < 100 < 2000 < 100 < 100 < 100 < 100

02/16/02 TB 16467 550 < 100 < 100 < 100 < 100 D 41000 < 100 < 100 290 < 100 < 1000 < 100 < 100 < 100 < 2000 < 100 140 < 100 22005/29/02 TB 17156 J 81 < 80 < 80 < 80 < 80 D 4700 < 80 < 80 < 80 < 80 < 800 < 80 < 80 < 80 J 170 < 80 < 80 < 80 J 4809/05/02 TB 17872 180 < 80 < 80 < 80 < 80 D 16000 < 80 < 80 < 80 < 80 < 800 < 80 < 80 < 80 < 1600 < 80 J 43 < 80 < 80

03/11/03 TB 18980 < 10 < 5 < 5 < 5 < 5 J 3 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 5

03/02/04 TB 20560 55 9 < 5 < 5 < 15 19100 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 34 < 2 5808/31/04 TB 21058 190 9 < 5 < 5 < 15 5960 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 197 < 5 17 < 2 3510/08/04 TB 21270 205 < 200 < 200 < 200 < 600 11400 < 200 < 200 < 200 < 200 < 800 < 160 < 200 < 200 < 2000 < 200 < 200 < 80 < 20011/17/04 TB 21435 < 400 < 400 < 400 < 400 < 1200 16600 < 400 < 400 < 400 < 400 < 1600 < 320 < 400 < 400 < 4000 < 400 < 400 < 160 < 400

12/09/04 TB 21626 < 400 < 400 < 400 < 400 < 1200 18600 < 400 < 400 < 400 < 400 < 1600 < 320 < 400 < 400 < 4000 < 400 < 400 < 160 < 400

01/18/05 TB 21838 < 500 < 500 < 500 < 500 < 1500 22900 < 500 < 500 < 500 < 500 < 2000 < 400 < 500 < 500 < 5000 < 500 < 500 < 200 < 50002/10/05 TB 21972 < 500 < 500 < 500 < 500 < 1500 20700 < 500 < 500 < 500 < 500 < 2000 < 400 < 500 < 500 < 5000 < 500 < 500 < 200 < 50004/15/05 TB 22384 < 200 < 200 < 200 < 200 < 600 8970 < 200 < 200 < 200 < 200 < 800 < 160 < 200 < 200 < 2000 < 200 < 200 < 80 < 200

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 306 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

MW-111JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: West Road

05/29/02 TB 17157 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 509/03/02 TB 17861 < 10 J 1 < 5 J 2 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 511/07/02 TB 18160 < 10 J 2 < 5 J 2 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 5

03/06/03 TB 18942 < 10 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 50 < 5 < 5 < 5 < 100 < 5 < 5 < 5 < 505/09/03 TB 19237 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 508/12/03 TB 19583 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 509/09/03 TB 19782 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 510/03/03 TB 19852 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 511/12/03 TB 20007 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 512/02/03 TB 20114 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

03/02/04 TB 20565 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 504/13/04 TB 20683 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 505/11/04 TB 20716 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 506/22/04 TB 20788 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 507/23/04 TB 20891 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 508/31/04 TB 21059 < 5 < 5 < 5 < 5 < 15 < 5 < 5 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 510/08/04 TB 21271 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 511/16/04 TB 21431 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 512/09/04 TB 21627 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

01/18/05 TB 21846 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 502/10/05 TB 21977 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 506/16/05 TB 22700 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 307 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =

DateColl'd

SampleNumber

NAPHTH 11DCA 11DCE 12DCA ACET BENZ C12DCE CFORM EBENZ MCHLOR MEK MTBE T12DCEPCE TCE TOL VINCHLTBA XYLTOT

GROUNDWATER MONITORING Well Name

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

MW-112JUNE, 2005Lyondell Chemical Company

Turtle Bayou ProjectProject Name: West Road

12/01/03 TB 20083 19 < 5 < 5 < 5 < 15 141 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 J 312/02/03 TB 20089 31 < 5 < 5 < 5 < 15 124 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 J 212/03/03 TB 20117 31 < 5 < 5 < 5 < 15 120 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 J 312/15/03 TB 20174 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

01/12/04 TB 20206 < 5 < 5 < 5 < 5 < 15 7 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 503/02/04 TB 20566 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 504/08/04 TB 20638 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 505/11/04 TB 20717 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 506/22/04 TB 20789 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 507/23/04 TB 20892 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

08/31/04 TB 21060 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 510/08/04 TB 21272 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 67 < 5 < 5 < 2 < 511/16/04 TB 21432 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 512/09/04 TB 21628 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

01/18/05 TB 21839 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 502/10/05 TB 21978 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 504/15/05 TB 22386 < 5 < 5 < 5 < 5 < 15 < 5 < 5 < 5 < 5 < 5 < 20 < 4 < 5 < 5 < 50 < 5 < 5 < 2 < 5

< Less than shown detection limitJ Detected conc. below detection limitE Conc. exceeded instrument calibration rangeB Analyte also found in method blankD Concentration derived from dilution

Page 308 of 308NAPHTHALENENAPHTH = 1,1-DICHLOROETHANE11DCA = 1,1-DICHLOROETHENE11DCE =1,2-DICHLOROETHANE12DCA = ACETONEACET = BENZENEBENZ =CIS-1,2-DICHLOROETHENEC12DCE = CHLOROFORMCFORM = ETHYLBENZENEEBENZ =METHYLENE CHLORIDEMCHLO = 2-BUTANONEMEK = TERT-BUTYL METHYL ETHERMTBE =TETRACHLOROETHENEPCE = TRANS-1,2-DICHLOROETHENET12DCE = TERT-BUTYL ALCOHOLTBA =TRICHLOROETHENETCE = TOLUENETOL = VINYL CHLORIDEVINCHL =XYLENE(TOTAL)XYLTOT =