fall 2016 groundwater sampling report

Stonecipher & Clark Environmental Solutions, LLC

Fall 2016 Groundwater Sampling Report Northeast Auto Accessory

684 Portland Street St. Johnsbury, Vermont

SMS #20114197

1

Fall 2016 Groundwater Sampling Report Northeast Auto Accessory

684 Portland Street St. Johnsbury, Vermont

Prepared For:

RHTL Partners, LLC

Prepared By: Stonecipher & Clark Environmental Solutions, LLC

111 Saranac Street, Studio 15 Littleton, New Hampshire 03561

Project# 2016-002 Stonecipher & Clark Environmental Solutions, LLC

2

Project: 2016-002

December 13, 2016

Mr. Gerold Noyes Hazardous Materials Specialist Agency of Natural Resources, Waste Management Division 103 South Main Street/West Building Waterbury, VT 05671-0404 Subject: Fall 2016 Groundwater Sampling Report - Northeast Collision,

684 Portland Street, St. Johnsbury, Vermont, SMS #20114197

Dear Mr. Noyes:

Stonecipher & Clark Environmental Solutions, LLC, (S&C) has completed the Fall 2016 groundwater sampling round at the above mentioned facility. The following wells were sampled via Method 8021 for VOCs on October 27, 2016: MW-4, MW-5-13, MW-6-13, RW-1-13, MW-7-15, and MW-8-15. The following locations had free product and were therefore not sampled: MW-3 and RW-2-13. Depth to groundwater was measured at MW-1 and MW-2 to calculate groundwater contours.

An interface probe was utilized to measure depth to groundwater in all wells not containing free product prior to sampling. The wells (that did not have free product) were purged of approximately three well volumes of water and allowed to recharge prior to collection of the groundwater sample. Groundwater was encountered at an average of 5.14 feet below grade during monitoring well sampling.

Groundwater

MW-4 was at below VT DEC Groundwater Quality Enforcement Standards (GQES) for all constituents analyzed.

MW-5-13 was above standard for the following analytes: Benzene, Toluene, Ethylbenzene, Total Xylenes, 1,3,5 Trimethylbenzene and 1,2,4 Trimethylbenzene. MtBE and Naphthalene were not detected, yet due to dilution of the sample the detection levels for each were excessive; MTBE was <500 µg/L and Naphthalene was <3,000 µg/L.

MW-6-13 was below detectable limits for all constituents analyzed.

MW-7-15 was above standard for the following analytes: Benzene, Toluene, Ethylbenzene, 1,3,5 Trimethylbenzene and 1,2,4 Trimethylbenzene. MtBE and Naphthalene were not detected, yet due to dilution of the sample the detection levels for each were excessive; MTBE was <100 µg/L and Naphthalene was <500 µg/L.

RW-1-13 was above standard for Benzene and 1,2,4 Trimethylbenzene.

STON

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CLA

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ENV

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NM

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L SOLU

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111 Saranac Street, Stu

dio 15, L

ittleton, N

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3

MW-8-15 exhibited exceedances of the standard for the following constituents: 1,3,5 Trimethylbenzene, 1,2,4 Trimethylbenzene and Naphthalene. Benzene was not detected, yet due to dilution of the sample the detection level was excessive (<10 µg/L).

Free Product

Groundwater continues to be impacted at the Site with pockets of free product observed at MW-3 and RW-2-13. Free product recovery occurred on 7/20 and 10/27. During the visit, fully saturated geosorbs were removed and replaced at MW-3 and RW-2-13. Six ounces of product was removed in July and 1 liter of product was bailed from each well in October. All geosorbs were containerized in a drum on-Site.

Conclusions/Recommendations

Groundwater, based on the Fall 2016 data retrieved from the Northeast facility and the Green Mountain Electric Supply site (located across Portland Street) is calculated to be flowing to the north/northwest. Based on these calculations and as stated previously by S&C, it is likely that impacts from the Northeast facility are flowing beneath Portland Street.

S&C recommends performing bi-annual free product recovery (geosorb replacement) as well as bi-annual groundwater sampling (Spring 2017 and Fall 2017) at all on-Site wells except for MW-1 and MW-2.

Please contact the undersigned with any questions or concerns.

Sincerely,

Jennifer Stonecipher Environmental Project Manager Stonecipher & Clark Environmental Solutions, LLC

4

Site Plan

EXISTINGBUILDING

FORMER LOCATION: UST

#2 (HEATING OIL)


#1 (HEATING OIL)

FORMER LOCATION: UST #3

(GASOLINE)

CONCRETE SLAB. FORMER

PUMP ISLAND FOR UST

(GASOLINE)

EXISTING CB

RIM: 608.37APPRO

XIM

ATE

RIG

HT O

F W

AY

EXISTING CB

RIM: 606.86

EXISTING CB

RIM: 608.04

SB4SB5 SB6 SB7

SB8

EXIST DMH

RIM: 609.16

SCALE IN FEET:1" = 40'

WHEN PLOTTED 11" X 17"

(NS)

SB8

EXISTING CB

RIM: 608.00

SB9

604'

(FP)

TOC=608.91'

TOC=609.77'

TOC = 608.30'

EXISTINGBUILDING

EXIS

TIN

G B

UIL

DIN

G

SB-5

SB-3SB-4

6" W

ATER

LIN

E (D

IG

SAFE)

1" W

ATER LIN

E (D

IG

SAFE)

SEW

ER LIN

E (D

IG

SAFE)

MW-1(604.57)

MW-2(604.66)

MW-4(602.75)

RW-2-13(FP)

MW-3(FP)

MW-6-13(603.00)

MW-5-13(602.98)

MW-8-15(603.13)

MW-7-15(603.19)

RW-1-13(602.95)

6

0

4

.

5

'

6

0

4

'

6

0

3

.

5

'

6

0

3

'

NOTE: BASE PLAN INFORMATION

DERIVED FROM SURVEY DATA SHOWN

IN PLAN TITLED: "NORTHEAST AUTO

ACCESSORY - APRIL 2012" GENERATED

BY HORIZONS ENGINEERING, INC.

NORTHEAST AUTO ACCESSORY

SMS#20114197

684 PORTLAND AVENUE

ST. JOHNSBURY, VERMONT

OCTOBER 2016 GROUNDWATER SITE PLAN

BASED ON OCTOBER 2016 DATA

SHEET 1 OF 2

STONECIPHER & CLARK

ENVIRONMENTAL SOLUTIONS, LLC

111 SARANAC STREET, STUDIO 15

LITTLETON, NEW HAMPSHIRE 03561

603.575.5154

EXISTINGBUILDING


#2 (HEATING OIL)


#1 (HEATING OIL)

FORMER LOCATION: UST #3

(GASOLINE)

CONCRETE SLAB. FORMER

PUMP ISLAND FOR UST

(GASOLINE)

EXISTING CHANNEL (TYPE UNKNOWN)

ALONG ROAD UNDER POWER LINES.

(EACH SIDE OF MANHOLE)

APPRO

XIM

ATE

RIG

HT O

F W

AY

EXISTING CB

RIM: 608.04

SB4SB5 SB6 SB7

SB8

EXIST DMH

RIM: 609.16

SCALE IN FEET:1" = 40'

WHEN PLOTTED 11" X 17"

(NS)

SB8

SB9604'

(FP)

TOC = 608.30'

EXISTINGBUILDING

EXIS

TIN

G B

UIL

DIN

G

GREEN

M

O

UN

TAIN

ELECTRIC SU

PPLY

SITE #

20134411

NO

RTH

EAST C

OLLISIO

N

SITE #

20114197

GREEN

MO

UN

TAIN

ELECTRIC S

UPPLY

SITE #

20134411

NO

RTH

EAST CO

LLISIO

N

SITE #

20114197

APPROXIMATE FORMER

LOCATION: UST #3

(HEATING OIL)

APPROXIMATE FORMER LOCATION:

UST#1 (GASOLINE)

APPROXIMATE FORMER LOCATION:

UST#2 (GASOLINE)

MW-4(602.75)

RW-2-13(FP)

MW-6-13(603.00)

MW-5-13(602.98)

MW-3(FP)

MW-8-15(603.13)

MW-7-15(603.19)

RW-1-13(602.95)

MW-1(604.57)

MW-2(604.66)

MW-6(601.07)

MW-3(601.68)

MW-1(600.93)

MW-8(601.85)

MW-5(602.08)

MW-2(602.58)

MW-7(604.11)

601.0'

602.5'

603.0

'60

3.5'

604

601.5'

602.0'

6

0

4

.

5

'

6

0

4

'

6

0

3

.

5

'

6

0

3

'

MW-4(602.45)

NOTE: BASE PLAN INFORMATION

DERIVED FROM SURVEY DATA SHOWN

IN PLAN TITLED: "NORTHEAST AUTO

ACCESSORY - APRIL 2012" GENERATED

BY HORIZONS ENGINEERING, INC.

BOUNDARY LINES FOR GREEN

MOUNTAIN ELECTRIC SUPPLY SITE

ARE BASED ON CITY OF ST.

JOHNSBURY TAX MAPS, AND

TOPOGRAPHY IS BASED ON A FIELD

SURVEY USING A NIKON NPL-350

TOTAL STATION IN OCTOBER 2013.

NORTHEAST COLLISION

SMS#20114197

684 PORTLAND AVENUE

ST. JOHNSBURY, VERMONT

OCTOBER 2016 GROUNDWATER

SITE PLAN

SHEET 2 OF 2

STONECIPHER & CLARK

ENVIRONMENTAL SOLUTIONS, LLC

111 SARANAC STREET, STUDIO 15

LITTLETON, NEW HAMPSHIRE 03561

603.575.5154

6

Groundwater Table/Free Product Table

Groundwater Quality Analytical Results2016‐002 Northeast Collision CenterSMS #20114197

Analytes VT DEC GQESPreventative Action Level

4/13/12 6/24/13 11/20/13 4/14/14 10/15/14 4/6/15 10/15/15 4/24/16 10/27/16TOC 609.77 609.77 609.77 609.77 609.77 609.77 609.77 609.77 609.77Water Level 5.02 5.20 5.10 4.80 5.18 5.20 4.60 5.19 5.20Groundwater Elevation 604.75 604.57 604.67 604.97 604.59 604.57 605.17 604.58 604.57

Benzene 5 0.5 <1 <1 <1 <1 <1 <1Toluene 1,000 500 <1 <1 <1 <1 <1 <1Ethylbenzene 700 350 <1 <1 <1 <1 <1 <1mp‐Xylene NA NA <1 <1 <1 <1 <1 <1o‐Xylene NA NA <1 <1 <1 <1 <1 <1Tota Xylenes 10,000 5,000 BDL BDL BDL BDL BDL BDLTotal BTEX NA NA BDL BDL BDL BDL BDL BDLMethyl‐t‐butyl ether (MTBE) 40 20 <5 <5 <5 <5 <5 <51,3,5 Trimethylbenzene 4 2 <1 <1 <1 <1 <1 <11,2,4 Trimethylbenzene 5 2.5 <1 <1 <1 <1 <1 <1Naphthalene 20 10 <5 <5 <5 <5 <5 <5Notes:

NA ‐ no standard available

GQES ‐ Groundwater Quality Enforcement Standard

MW‐1

< laboratory results below detectable limits

Concentration (µg/L) Concentration (µg/L)

Concentrations in bold exceed enforcement standard

NO LO

NGER SAM

PLED

NO LO

NGER SAM

PLED

NO LO

NGER SAM

PLED




Benzene 5 0.5 <1 <1 <1 <1 <1 <1Toluene 1,000 500 <1 <1 <1 <1 <1 <1Ethylbenzene 700 350 <1 <1 <1 <1 <1 <1mp‐Xylene NA NA <1 <1 <1 <1 <1 <1o‐Xylene NA NA <1 <1 <1 <1 <1 <1Tota Xylenes 10,000 5,000 BDL BDL BDL BDL BDL BDLTotal BTEX NA NA BDL BDL BDL BDL BDL BDLMethyl‐t‐butyl ether (MTBE) 40 20 <5 <5 <5 <5 <5 <51,3,5 Trimethylbenzene 4 2 <1 <1 <1 <1 <1 <11,2,4 Trimethylbenzene 5 2.5 4 <1 <1 <1 <1 <1Naphthalene 20 10 <5 <5 <5 <5 <5 <5Notes:


MW‐2





NO LO

NGER SAM

PLED

NO LO

NGER SAM

PLED

NO LO

NGER SAM

PLED



4/13/12 6/24/13 11/20/13 4/14/14 10/15/14 4/6/15 10/15/15 4/24/16 10/27/16TOC 607.74 607.74 608.6 608.6 608.6 608.6 608.6 608.6 608.6Water Level 1.50 NA NA NA NA NA NA NA NAGroundwater Elevation 606.24 NA NA NA NA NA NA NA NA

Benzene 5 0.5Toluene 1,000 500Ethylbenzene 700 350mp‐Xylene NA NAo‐Xylene NA NATota Xylenes 10,000 5,000Total BTEX NA NAMethyl‐t‐butyl ether (MTBE) 40 201,3,5 Trimethylbenzene 4 21,2,4 Trimethylbenzene 5 2.5Naphthalene 20 10Notes:


MW‐3

FREE PRODU

CT

FREE PRODU

CT

FREE PRODU

CT




FREE PRODU

CT

FREE PRODU

CT

FREE PRODU

CT

FREE PRODU

CT


FREE PRODU

CT

FREE PRODU

CT




Benzene 5 0.5 12 11 4 4 6 2 4 3 1Toluene 1,000 500 3 <1 <1 <1 <1 <1 <1 <1 <1Ethylbenzene 700 350 7 14 4 3 6 3 4 4 <1mp‐Xylene NA NA 31 2 1 <1 <1 <1 <1 <1 <1o‐Xylene NA NA 34 <1 <1 <1 <1 <1 <1 <1 <1Tota Xylenes 10,000 5,000 65 <3 <2 BDL BDL BDL BDL BDL BDLTotal BTEX NA NA 87 25 8 7 12 5 8 7 1Methyl‐t‐butyl ether (MTBE) 40 20 28 28 12 <5 9 <5 <5 6 <51,3,5 Trimethylbenzene 4 2 23 1 <1 <1 <1 <1 <1 <1 <11,2,4 Trimethylbenzene 5 2.5 85 6 2 1 <1 1 <1 <1 <1Naphthalene 20 10 62 22 7 <5 <5 <5 <5 <5 <5Notes:


MW‐4







6/24/13** 11/20/13* 4/14/14* 10/15/14 4/6/15* 10/15/15^ 4/24/16^ 10/27/16^TOC 608.28 608.28 608.28 608.28 608.28 608.28 608.28 608.28Water Level 4.75 5.15 4.6 5.15 5.2 5.05 5.22 5.30Groundwater Elevation 603.53 603.13 603.68 603.13 603.08 603.23 603.06 602.98

Benzene 5 0.5 21,000 11,000 10,000 12,000 10,000 14,000 15,000 14,000Toluene 1,000 500 130,000 28,000 27,000 23,000 25,000 45,000 55,000 42,000Ethylbenzene 700 350 27,000 3,400 3,200 3,100 2,900 3,800 4,100 3,100mp‐Xylene NA NA 100,000 13,000 13,000 11,000 14,000 17,000 18,000 20,000o‐Xylene NA NA 38,000 5,400 5,400 5,200 6,100 7,300 7,500 8,600Tota Xylenes 10,000 5,000 138,000 18,400 18,400 16,200 20,100 24,300 25,500 28,600Total BTEX NA NA 316,000 60,800 58,600 54,300 58,000 87,100 99,600 87,700Methyl‐t‐butyl ether (MTBE) 40 20 <1,000 <100 <100 <100 <100 <500 <500 <5001,3,5 Trimethylbenzene 4 2 11,000 600 700 500 600 900 700 1,1001,2,4 Trimethylbenzene 5 2.5 31,000 1,800 1,800 1,800 2,200 3,000 2,700 4,000Naphthalene 20 10 <5,000 <500 <500 <500 <500 <3,000 <3,000 <3,000Notes:


* Dilution factor of 100** Dilution factor of 1,000^ Dilution factor of 500

MW‐5‐13







6/24/13 11/20/13 4/14/14 10/15/14 4/6/15 10/15/15 4/24/16 10/27/16TOC 608.3 608.3 608.3 608.3 608.3 608.3 608.3 608.3Water Level 4.9 5.23 4.7 5.34 5.1 5.21 5.35 5.30Groundwater Elevation 603.40 603.07 603.60 602.96 603.20 603.09 602.95 603.00

Benzene 5 0.5 100 1 15 <1 9 <1 12 <1Toluene 1,000 500 26 <1 1 <1 <1 <1 <1 <1Ethylbenzene 700 350 70 <1 <1 <1 1 <1 4 <1mp‐Xylene NA NA 21 <1 5 <1 <1 <1 1 <1o‐Xylene NA NA 7 <1 1 <1 <1 <1 <1 <1Tota Xylenes 10,000 5,000 28 BDL 6 BDL BDL BDL 1 BDLTotal BTEX NA NA 224 BDL 22 BDL 10 BDL 17 BDLMethyl‐t‐butyl ether (MTBE) 40 20 <5 <5 <5 <5 <5 <5 <5 <51,3,5 Trimethylbenzene 4 2 15 <1 1 <1 <1 <1 <1 <11,2,4 Trimethylbenzene 5 2.5 66 <1 2 <1 <1 <1 5 <1Naphthalene 20 10 53 <1 <5 <5 <5 <5 <5 <5Notes:


MW‐6‐13

< laboratory results below detectable limitsGQES ‐ Groundwater Quality Enforcement Standard





6/24/13* 11/20/13 4/14/14 10/15/14 4/6/15 10/15/15 4/24/16 10/27/16TOC 608.35 608.35 608.35 608.35 608.35 608.35 608.35 608.35Water Level 4.94 5.3 4.6 5.25 5.2 5.54 5.3 5.40Groundwater Elevation 603.41 603.05 603.75 603.1 603.15 602.81 603.05 602.95

Benzene 5 0.5 630 26 49 16 12 59 93 6Toluene 1,000 500 260 7 19 2 <1 4 22 <1Ethylbenzene 700 350 190 42 28 35 9 53 140 24mp‐Xylene NA NA 850 110 210 12 3 73 300 12o‐Xylene NA NA 140 12 82 2 <1 17 89 1Tota Xylenes 10,000 5,000 990 122 292 14 3 90 389 13Total BTEX NA NA 2,070 197 388 67 24 206 644 43Methyl‐t‐butyl ether (MTBE) 40 20 <5 <5 <5 <5 <5 <5 <5 <51,3,5 Trimethylbenzene 4 2 64 76 45 <1 <1 2 8 <11,2,4 Trimethylbenzene 5 2.5 190 180 43 16 6 38 120 12Naphthalene 20 10 40 50 7 6 <5 10 28 <5Notes:


* Dilution factor of 5

RW‐1‐13







6/24/13 11/20/13 4/14/14 10/15/14 4/6/15 10/15/15 4/24/16 10/27/16TOC 608.6 608.6 608.6 608.6 608.6 608.6 608.6 608.6Water Level NA NA NA NA NA NA NA NAGroundwater Elevation NA NA NA NA NA NA NA NA

Benzene 5 0.5Toluene 1,000 500Ethylbenzene 700 350mp‐Xylene NA NAo‐Xylene NA NATota Xylenes 10,000 5,000Total BTEX NA NAMethyl‐t‐butyl ether (MTBE) 40 201,3,5 Trimethylbenzene 4 21,2,4 Trimethylbenzene 5 2.5Naphthalene 20 10Notes:


RW‐2‐13

FREE PRODU

CT

FREE PRODU

CT

FREE PRODU

CT




FREE PRODU

CT

FREE PRODU

CT


FREE PRODU

CT

FREE PRODU

CT

FREE PRODU

CT



8/13/15* 10/15/15** 4/24/16** 10/27/16**TOC 608.31 608.31 608.31 608.31Water Level 4.89 5.00 5.03 5.12Groundwater Elevation 603.42 603.31 603.28 603.19

Benzene 5 0.5 3,000 1,300 1,300 800Toluene 1,000 500 28,000 9,200 7,700 4,400Ethylbenzene 700 350 9,000 2,100 1,600 1,100mp‐Xylene NA NA 35,000 9,200 6,600 4,400o‐Xylene NA NA 13,000 3,400 2,400 1,700Tota Xylenes 10,000 5,000 48,000 12,600 9,000 6,100Total BTEX NA NA 88,000 25,200 19,600 12,400Methyl‐t‐butyl ether (MTBE) 40 20 <1,000 <100 <100 <1001,3,5 Trimethylbenzene 4 2 2,000 500 300 3001,2,4 Trimethylbenzene 5 2.5 7,000 1,800 1,200 900Naphthalene 20 10 <5,000 <500 <500 <500Notes:


* Dilution factor of 1,000** Dilution factor of 100

MW‐7‐15


Concentration (µg/L)


Concentration (µg/L)




8/13/15* 10/15/15* 4/24/16* 10/27/16*TOC 607.99 607.99 607.99 607.99Water Level 4.48 4.55 4.65 4.86Groundwater Elevation 603.51 603.44 603.34 603.13

Benzene 5 0.5 <10 <10 10 <10Toluene 1,000 500 560 140 230 210Ethylbenzene 700 350 1,600 480 750 580mp‐Xylene NA NA 4,100 1,100 1,800 1,500o‐Xylene NA NA 1,000 240 360 340Tota Xylenes 10,000 5,000 5,100 1,340 2,160 1,840Total BTEX NA NA 7,260 1,960 3,150 2,630Methyl‐t‐butyl ether (MTBE) 40 20 <10 <10 <10 <101,3,5 Trimethylbenzene 4 2 800 250 320 2301,2,4 Trimethylbenzene 5 2.5 1,800 700 1,000 760Naphthalene 20 10 300 70 90 60Notes:


* Dilution factor of 10GQES ‐ Groundwater Quality Enforcement Standard

MW‐8‐15




2016-002 Northeast Collision CenterFree Product Recovery

RW-1-13 RW-2-13 MW-3

12/9/2013 No free productRemoved 2.5L - inserted

geosorbRemoved 1.5L- inserted

geosorb

12/31/2013Unable to locate well due to thick ice cover

Removed fully saturated geosorb- inserted new

geosorb

Removed half saturated geosorb- inserted new

geosorb


Removed 9/10 saturated geosorb- inserted new

geosorb


geosorb


Unable to locate well due to thick ice cover

Unable to locate well due to thick ice cover

4/2/2014Unable to access well,

bailer was frozen to the side of the PVC


geosorb


geosorb

4/30/2014 No free productGeosorb less than 10

percent saturated, did not remove

Geosorb less than 10 percent saturated, did

not remove

8/28/2014 No free productRemoved fully saturated geosorb- inserted new

geosorb

Removed 3/4 saturated geosorb, inserted new

geosorb

11/18/2014 No free productRemoved 3/4 saturated geosorb, inserted new

geosorb


geosorb


geosorb


geosorb


geosorb


geosorb


geosorb


geosorb

7/20/2016 No free product

Removed fully saturated geosorb, bailed out

additional6 ounces product- inserted new geosorb

Geosorb approximately 50 % saturated, flipped

over, replaced in well, no product present on GW

table

10/27/2016 No free product

Removed fully saturated geosorb + additional 1 liter of product- inserted new

geosorb

Removed fully saturated geosorb + additional 1

liter of product- inserted new geosorb

5

Analytical Reports

fall 2016 groundwater sampling report

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