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SLVER LAKE DATA SUMMARY

General Electric Company Pittsfield Massachusetts

November 1993

BLASLAND amp BOUCK ENGINEERS PC BLASLAND BOUCK amp LEE

ENGINEERS amp SCIENTISTS

6723 Towpath Road Syracuse New York 13214

(315) 446-9120

SDMS DocID 000213401

SILVER LAKE DATA SUMMARY

TABLE OF CONTENTS

Page

SECTION 1 - BACKGROUND 1-1

SECTION 2 - SUMMARY OF SILVER LAKE SOIL SEDIMENT AND WATER-COLUMN DATA 2-1

SECTION 3 - ESTIMATED VOLUMES OF CONTAMINATED SEDIMENTS AND PCBs WITHIN SILVER LAKE 3-1

SECTION 4 - CURRENT AND HISTORIC OUTFALLS TO SILVER LAKE 4-1 41 Cur ren t Out fa l ls 4-1 42 Histor ic Out fa l ls 4-3

SECTION 5 - MANUFACTURING PROCESSES CONDUCTED IN VICINITY OF SILVER LAKE 5-1

SECTION 6 - PERMITTED AND NON-PERMITTED DISCHARGES TO SILVER LAKE 6-1

REFERENCES

FIGURES

1 - Summary of Silver Lake Sediment and Sur face Water Data 2 - Facil i ty Drainage 3 - Schematic Plan - Oi l Water Separator 31W 4 - Addit ional Municipal Sewer Outfal ls

APPENDICES

A - NPDES Permit - December 19 1975 B - NPDES Permit - May 21 1992 C - Documentat ion Related to GE Releases to Si lver Lake

1293927AA 11493

SECTION 1 - BACKGROUND

This summary provides informat ion requested by the Massachuset ts

Depar tment of Env i ronmenta l P ro tec t i on (DEP) re lated to Si lver Lake located in

P i t t s f i e l d Massachuset ts Based on the D E P s rev iew of b iweekly air sampl ing

result summaries prepared on behalf of the General Electric Company (GE) by

Zorex Corpo ra t i on P i t t s f i e ld M a s s a c h u s e t t s as part of the ongoing GE f a c i l i t y

Air Moni tor ing Program the DEP bel ieves Si lver Lake to be a l ikely sou rce of

polychlormated biphenyls (PCBs) in ambient air in the area In a letter dated

October 13 1993 the DEP requested that GE submit the information l isted below

with the Air Moni tor ing Summary Report to provide a context to review the air

sampling results

1 Map or maps summar iz ing exist ing soi l sediment and water column

data for Silver Lake All data should be indicated on the map(s) and

locat ions and depths of sediment or soi l sampling data should be

specif ied

2 Est imated volumes of contaminated sediments and PCBs within Si lver

Lake and a description of the procedure used to obtain the estimates

3 A map and l ist of the h istor ic and current outfal ls to Si lver Lake

including the years in which these out fa l ls were funct ion ing and a

descr ipt ion of any measures taken to seal them

4 A brief history of the manufactur ing processes conducted in the vicini ty

of Silver Lake including a descr ip t ion of substances used

11493 1-1 1293927 AA

5 A listing of any permitted or non-permitted discharges to Silver Lake

including any major re leases to S i lver Lake

These items are addressed in Sect ions 2 through 6 respec t i ve ly

11993 1-2 1293927AA

SECTION 2 - SUMMARY OF SILVER LAKE SOIL SEDIMENT AND

WATER-COLUMN DATA

To date the inves t iga t ions of S i lver Lake have focused on sediment and

water-co lumn data co l lect ion and analys is A summary of the data co l lec ted is

provided in Figure 1 This summary presents data col lected by S tewar t

Laboratories Inc (Stewart) Knoxvi l le Tennessee in 1980 and 1982 which

consisted of PCB results of 120 sediment samples col lected from 25 locat ions

Sur face water samples were also col lected by Stewart including eight samples

col lected from the Silver Lake out fa l l to the Housatonic River dur ing a s to rm

event and analyzed for total suspended sol ids (TSS) and PCBs (Stewart 1982)

Figure 1 also summarizes Si lver Lake sediment and water -co lumn data

collected by Blasland amp Bouck Engineers PC (Blasland amp Bouck) as part of the

1990-1991 Massachusetts Contingency Plan (MCP) Phase II investigation of the

Housatonic River (Blasland amp Bouck December 1991 and August 1992) These

data include the results of the fo l lowing

bull Six sediment samples collected from three locations within the eastern

portion of the lake and analyzed for constituents listed in Appendix IX

of 40 CFR Part 264 plus three additional const i tuents (benzidine 2shy

chloroethyl v inyl ether and 12-diphenylhydrazine) (Appendix IX + 3)

bull Water-column samples collected from the center of Silver Lake and at

its outfall to the Housatonic River during high-flow and low-flow

condit ions with analysis for Appendix IX + 3 const i tuents and

11993 2-1 1293927AA

bull Monthly water-column samples col lected over one calendar year f rom

the center of S i l ve r Lake and at i ts ou t fa l l wi th ana lys is for PCBs

TSS and seve ra l m isce l laneous water qual i ty parameters

In addition Figure 1 presents data f rom three miscellaneous sediment

compos i te samples co l lec ted f rom Si lver Lake in November 1992 by B las land amp

Bouck at the reques t of GE (Blas land amp Bouck December 1992)

The MCP Supplemental Phase II Scope of Work and Proposal for RCRA

Facility Investigation of Housatonic River and Silver Lake included a proposal to

conduct additional sediment and soil sampling and analysis from the edge of the

lake (Blasland amp Bouck Apri l 1993) This work has not been performed to date

and is pending EPADEP direct ion to proceed

11493 2-2 1293927AA

SECTION 3 - ESTIMATED VOLUMES OF CONTAMINATED SEDIMENTS AND

PCBs WITHIN SILVER LAKE

According to Stewart (1982) an est imated 63600 pounds of PCBs are

contained m Si lver Lake sediments Stewart further estimated that of this total

approximately 30000 pounds of PCBs are contained in Si lver Lake sed iments

located in the eastern po r t i on of the lake ad jacen t to the GE f a c i l i t y

In addition to the PCS mass estimates calculated by Stewart Blasland amp

Bouck on behalf of GE calculated and presented volume est imates related to

PCB-contammg sediments wi th in Si lver Lake in the document ent i t led MCP

Interim Phase II Report Current Assessment Summary for Housatonic River

(Interim Phase II Report) (Blasland amp Bouck December 1991) These estimates

were calculated for three concentration ranges -- greater than 1 part per million

(ppm) 10 ppm and 50 ppm -- using the available PCB sediment data These

three concentrat ion ranges were selected for i l lustrative purposes only and do

not represent levels of regulatory s igni f icance

In order to obtain the volume est imates three depths were calculated

corresponding to the deepest presence of PCBs at concentrat ions greater than

1 ppm 10 ppm and 50 ppm respectively at each of the sampling locations

The hor izontal surface area associated with each sample locat ion was then

multiplied by the corresponding depths of sediments containing PCBs greater

than 1 ppm 10 ppm and 50 ppm The estimated volumes of sediments

containing PCBs at these concentration ranges were then summed to obtain total

volume est imates Volume estimates of PCB-contammg sediments wi th in Si lver

Lake prev iously presented in the Interim Phase II Report are listed as fo l lows

11993 3-1 1293927 AA

Sediments containingthan 1 ppm PCBs

greater = 173000 cubic yards

Sediments conta in ingthan 10 ppm PCBs

greater = 120000 cubic yards and

Sediments con ta in ingthan 50 ppm PCBs

greater 83000 cubic ya rds

tt993 3-2 1293927 AA

SECTION 4 - CURRENT AND HISTORIC OUTFALLS TO SILVER LAKE

4 1 Cur rent Out fa l l s

F igure 2 i l l u s t r a t e s the ou t fa l l s to S i l ve r Lake c u r r e n t l y being used by GE

These outfalls are denoted as Outfal ls 001002 001A 003 and 004 These

out fa l ls were f i r s t permit ted under the National Pol lu t ion Discharge El iminat ion

Sys tem (NPDES) on December 19 1975 A copy of the f i r s t permi t for t h e s e

out fa l ls is included as Appendix A A copy of the current NPDES Permit related

to these outfal ls issued on May 21 1992 is included as Appendix B A brief

descript ion of the present uses related to each of these outfal ls is provided below

Outfa l l 001002

As shown in Figure 2 the sewer system components for Outfal ls 001 and

002 are combined to faci l i tate one d ischarge point This point of d ischarge

co l lec t ive ly referred to as Outfal l 001002 serves to convey process and

stormwater discharges to Si lver Lake f rom Bldgs 7 11 15 17 19 31 32

33X 41 41A 42 43 and 44 former buildings 26 27 and 29 assoc ia ted

yard drains and city s torm sewers in the northwestern port ion of the GE

facil i ty In addition non-contact cooling water is pumped into this system

f rom Bldgs 1 2 3 12 and 100

In 1992 the discharge line f rom Bldg 31 was sealed and is no longer

in use Discharge lines f rom Bldg 41 are scheduled to be sealed in 1993

Essentially all dry weather flows discharged from Outfall 001002 pass

through OilWater Separator (OWS) 31W (see Figure 3 for schemat ic) prior to

discharge The hydraulic capacity of OWS 31W is approximately 5 000 gallons

per minute (gpm) During rainfal l events if f lows to the OWS 31W exceed

5000 gpm the excess flow is diverted by way of the 31W Diversion Structure

(see Figure 3) to discharge directly to Si lver Lake via Outfal l 001A

11993 4-1 1293927AA

O u t f a l l 001A

As indicated above this out fa l l serves as a bypass for OWS 31W in

the event that s y s t e m f l o w r a t e s exceed app rox ima te l y 5 000 gpm (dur ing a

ra i n f a l l event o f s u f f i c i e n t magnitude) In addi t ion s u r f a c e runo f f f r o m c i t y

s t ree ts border ing the GE fac i l i t y to the nor thwest is d ischarged th rough th is

ou t fa l l

Outfal l 003

As shown in Figure 2 this outfal l conveys only stormwater f rom a yard

drain located in the western por t ion of the GE fac i l i t y along the east s ide

of S i l ver Lake Boulevard to Si lver Lake

Outfal l 004

The sewer system components associated with Outfal l 004 convey

process and stormwater from Bldgs 33 33A and 34 and related yard

areas as well as p rocess cool ing water which is pumped into the sys tem

f rom Bldgs 61 63 and 65 (see Figure 2)

In addition to the outfal ls described above Figure 2 i l lustrates the locat ions

of two additional currently active municipal outfal ls which discharge to Silver

Lake along its east side These out fa l ls are denoted in Figure 2 as M1 and

M2 Outfall M1 appears to discharge stormwater to Silver Lake near Outfal l 003

f rom a catch basin located ac ross Si lver Lake Boulevard f rom its d ischarge

point Outfal l M2 discharges stormwater to Si lver Lake near the in te rsec t ion of

Silver Lake Boulevard and East Street This outfall appears to discharge

stormwater from catch basins located along East Street and yard drains located

in the sou thwes te rn port ion of the GE fac i l i t y

11493 4-2 1293927AA

4 2 H is to r i c O u t f a M s

The current outfal ls from the GE faci l i ty to Silver Lake (Outfalls 001002 001A

003 and 004) and the i r uses are the same as the h is to r i c ou t fa l l s w i th the

excep t i on of Ou t fa l l 003 O u t f a l l 003 was h i s t o r i c a l l y used as a d i scharge po in t

for process water assoc ia ted w i th the fo rmer Bldg 36 Phenol Res in M a n u f a c t u r i n g

Operat ion which was demol ished during the 1980s (See Sect ion 5)

11993 4-3 1293927AA

SECTION 5 - MANUFACTURING PROCESSES CONDUCTED IN VICINITY OF

SILVER LAKE

The fo l lowing is a list of GE manufacturing processes that were conducted

in the v ic in i ty of Si lver Lake f rom the early 1900s to the present

1 Bldg 7 - Woodworking Shop

bull Discontinued in the 1980s

bull Materials generally used included lubricating oils and wood

2 Bldq 11 - Quality Contro l (OpResearch amp Development (RampD)

Laborator ies

bull QCRampD laborator ies d iscont inued in the 1980s

bull Small Environmental Test ing Laboratory cu r ren t l y in

operat ion

laquo Materials generally used mclude(d) laboratory chemicals

3 Bldq 15 - Core Steel Cutt ing and Assembly

bull Discont inued in the 1980s

bull Mater ia ls general ly used included oils and so lvents

4 Bldq 17 - Core Winding


bull Mater ia ls general ly used included solder or brazing f l u x e s

so lvents and adhesives

5 Bldg 19 - Load Ratio Assembly Aerospace Phalynx Assembly

bull Load Ratio Assembly d iscont inued in the 1980s

11993 5-1 1290927M

bull A e r o s p a c e Pha l ynx A s s e m b l y in ope ra t i on dur ing 1990 shy

1993

bull Mater ia ls general ly used included oi ls and so lvents

6 Bldq 26 27 29 - Smal l T r a n s f o r m e r T e s t amp A s s e m b l y

bull D i scon t inued in the 1 9 8 0 s

bull Mater ia ls genera l ly used inc luded PCB oil mineral oil

s i l i cone oi l ac ids c a u s t i c s f l u xes paper i n s u l a t i o n and

welding rods

7 Bldg 31 - Power House

bull Boi ler opera t ion s team heat generat ion

bull D iscont inued operat ion during 1991

bull Mater ia ls general ly used included 6 fuel oi l 2 fuel oil

mercury (assoc ia ted wi th a mercury boi ler ) and was te oil

8 Bldgs 3334 - Dist r ibut ion T r a n s f o r m e r Manu fac tu r i ng T ransmiss ion

Assembly

bull T rans fo rmer manufac tu r ing d iscont inued 1980s

bull T ransmiss ion assembly d iscont inued in 1993

bull Materials generally used included 10c oil welding products

paints radiator washing solvents mineral sp i r i ts and

xylene

9 Bldg 36 - Phenol ic Resin Manufac tur ing

bull D iscont inued 1980s

bull Bldg was demol ished in the 1980s

bull Mater ia ls general ly used included phenol fo rma ldehyde

wood f lour aniline asbestos and carbon black

11493 5-2 1293927AA

10 Bldgs 4 1 4 1 A - Punch P r e s s A r r e s t e r s P l a t i n q O p e r a t i o n

bull Discont inued operat ion during 1970s - 1980s

bull Ma te r i a l s g e n e r a l l y used i nc l uded machine c o o l a n t o i ls

epoxy r e s i n s cadmium lead cyan ide z inc 1 1 1

t r i c h l o r o e t h a n e ac ids and bases

1 1 Bldqs 42 43 44 - A r r e s t e r s Manu fac tunng Too lmak ing

Operat ionProtect ion Products

bull D iscon t inued operat ion during 1970s and 1980s

bull Ma te r ia l s used inc luded mach ine coolants PCS oi l lead

aluminum and paints

It is noteworthy that the manufacturing processes presented above represent

only those processes associated with GE operat ions conducted in the v ic in i ty of

Silver Lake No e f f o r t has been made on the part of GE to ident i fy h i s to r i c or

cu r ren t manu fac tu r ing p rocesses unrelated to the GE fac i l i t y which have been

conducted or are cu r ren t l y being conducted in the v ic in i ty of Si lver Lake

14M 5-3 1293927AA

SECTION 6 - PERMITTED AND NON-PERMITTED DISCHARGES TO SILVER LAKE

Sec t ion 4 p rov ides a d iscuss ion of severa l ou t f a l l s used by GE wh ich are

permit ted under GE s NPDES Permit as wel l as two municipal s to rmwate r ou t fa l l s

which discharge to Si lver Lake Figure 4 i l lustrates the locations of f i ve

additional municipal outfal ls discharging to Si lver Lake These outfal ls discharge

s to rmwate r co l lec ted f r om catch basins located along c i ty s t r e e t s s u r r o u n d i n g

Silver Lake

Whi le histor ic releases f rom the GE fac i l i t y to Si lver Lake have occur red

over a long period of time (as evidenced by the presence of PCBs m

sediments) GE began monitor ing e f f luen t quality in 1975 fo l lowing the issuance

of their NPDES permit In addit ion GE has maintained records of sudden

releases (i e spi l ls) at the GE fac i l i t y since the late 1980s GE reco rds f rom

the late 1980s to the present indicate that GE has experienced re leases of

materials to Silver Lake on three separate occasions (apart from regularly

permitted discharges) Details regarding these releases are provided in Appendix

C while a brief summary of each release is provided below

bull The f i r s t incident was reported on January 13 1989 and involved the

release of a rust-colored oily plume of material near Outfall 004 The

plume covered an area of Silver Lake of about 200 to 400 square feet

near Outfall 004 The origin of the material could not be determined

This plume dissipated shortly after being observed (GE January 1989)

bull The second release which was documented and reported on May 1

1990 involved the release of detergent to Si lver Lake via Out fa l l 004

This release apparently occurred during the washing of test equipment

related to Ordnance manufacturing operat ions Upon realizing the

11993 6-1 1293927M

initial release related equipment was shut down the residual wash

mater ials were removed drummed and disposed of and the equipment

was t h o r o u g h l y c leaned pr io r to r e s t o r i n g i ts use (GE May 1990)

The third incident occurr ing on May 3 1990 involved the release of

an estimated 200 to 300 gallons of si l icone oil to Silver Lake via OWS

31W and Out fa l l 001002 Wi th in 15 minutes of d i s c o v e r i n g the sp i l l

the area at the storm dram north of Building 3 had been bermed and

oil on the pavement was soaked up Sorbent pads were placed in the

catch basin i t se l f and cal ls were made to al l operat ional personnel

along the route to OWS 31W to ins t ruc t them to turn off all nonshy

essential wastewater discharges (air condit ioning and batch

d ischarges) Four manholes along the route were opened af ter

checking for oxygen and other rest r ic ted access cr i ter ia and f low

barriers were created with sorbent

A watch was placed on OWS 31W including hourly oil and grease

sampling Harbor booms and sorbent pads were deployed in OWS-31W

to provide for minimum turbulence and maximum time for the oil to

f loat to the sur face for co l lect ion by the skimmer belts By mid-

afternoon a harbor boom had been placed at Outfall 001002 and by

late afternoon the boom had been extended outside the marshy area

to which Outfal l 001002 discharges

Discharge water at Outfal l 001002 was sampled for oil and grease

hourly beginning at 9 2 5 am on Thursday May 3 1990 and ending at

8 40 am on Friday May 4 1990 Oil and grease values exceeding

GEs NPDES Permit l imit of 15 mghter occurred over the e ight-hour

11993 6-2 1293927AA

period between 11 24 am to 6 30 pm on May 3 1990 Based on

water f l o w a to ta l of app rox ima te l y 28 pounds of oil and g rease was

d ischarged (approx imate ly 4 ga l lons)

During May 3 - 4 1990 conditions on Silver Lake were calm in the

area of the outfal l and it is GEs belief f rom visual observat ion that

over 90 of the four gal lons was recovered Clean Harbors personne l

remained at OWS 31W around the clock through Monday morning May

7 1990 when it was clear that no additional release from the spill

was enter ing OWS 31W

A fairly significant rainfall began on the evening of May 4 1990 On

Saturday May 5 1990 at approximately 9 am an additional 600 feet

of harbor boom was placed to completely surround both the OWS 31W

discharge and the stormwater bypass discharge of OWS 31W (Outfa l l

001A) Although no oil was observed coming out of the bypass there

was a sheen outside of the harbor boom at the bypass and it was

deemed prudent to take the extra precaution (GE June 1990)

11993 6-3 1293927AA

References

R E F E R E N C E S

Stewart Laborator ies Inc Housatonic River Study 1980 and 1982 Invest igat ions Final Report Volumes I and II (Knoxvi l le TN December 1982)

Blasland amp Bouck Eng ineers P C MCP Inter im Phase II R e p o r t C u r r e n t Assessment Summary for Housatonic River Volumes I through III (Syracuse NY December 1991)

Blasland amp Bouck Engineers P C Addendum to MCP Inter im Phase II ReportCurrent Assessment Summary for Housatonic River Volumes I and II (Sy racuse NY Augus t 1992)

Blasland amp Bouck Engineers P C Memorandum f rom Bruce Euhan to Files Subject Silver Lake Sediment Sampling (Syracuse NY December 3 1992)

Blasland amp Bouck Engineers P C MCP Supplemental Phase II Scope of Work and Proposal for RCRA Facility Investigation of Housatonic River and Silver Lake (Syracuse NY April 1993)

General Electr ic Company Letter from G G Bowman to Mr Craig Gof f Massachusetts Department of Environmental Protect ion (Pi t tsf ie ld MA January 17 1989)

General Electr ic Company Memorandum f rom WA Fessler to f i l es Subject Cloudy Water in Si lver Lake (Pit tsf ield MA May 1 1990)

General Electr ic Company Letter from G G Bowman to Mr Rober t Terenz i Massachusetts Department of Environmental Protection (Pittsfield MA June 13 1990)

129392 AA 11 9 93

Figures

TARGET SHEET

THE MATERIAL DESCRIBED BELOW WAS NOT SCANNED BECAUSE

(X) OVERSIZED MAP

() NON-PAPER MEDIA

() OTHER

DOC ID 213401

DATE 1111993

TITLE SILVER LAKE DATA SUMMARY

DESCRIPTION FIGURE 1 SUMMARY OF SILVER LAKE SEDIMENT AND SURFACE WATER DATA

THE OMITTED MATERIAL IS AVAILABLE FOR REVIEW BY APPOINTMENT

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FIGURE

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1 INFORMATION OBTAINED FROM CITY OF PITTSFIELDMA ENGINEERING OFFICE

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Appendices

APPENDIX A

NPDES Permit - December 19 1975 (PP 1-10)

1 1493

1293927AA

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LI S pound- Ironmcisvc Protection Agency

Region i _ bdquo

John K k c n n o o y redcra l Building

Boeton Ma f i achus0 t t r 02203

CERTIFTID MAIL-RETURN

General Electric Company Attn James S Thayer Manager Environmental Protection 100 Woodlawn Avenue Building 43 Room 390 Pittsfield Massachusetts 01201

The Comrnonivoalfh Of [ JGCoGcnuso Water Resources Commission

Division of Vctcr Pollution Ccitrol Lovf t ro t t Soltonrial Duilcinn

Boston Massachusetts 02202 RECEIPT REQUESTED

RE Application No Federal MA0003891

Stat (SO

December 19 1975

Gentlemen

Enclosed is your final National Pollution Discharge Elimination System Pcmit for the above referenced application issued pursuant to Section 402 of the Federal Water Pollution Control Act as amended (the Federal Act) and Sections 43 - 45 of the Massachusetts Clean Waters Act as amended (the State Act) Also enclosed is a copy of guidelines specifying test methods published pursuant to Section 304(g) of the Federal Act As noted in the permit the permittee is required to utilize these test methods in monitoring its effluent

The Regional Administrator of the Environmental Protection Agency and the Director of the Division of Water Pollution Control have determined that the permit as issued is substantially unchanged from the tentative determinations and draft permit prepared pursuant to federal and state laws and regulations Within ten (10) days of the date of receipt of this determination you or any interested parties may request an adjudicator- hearing of the Regional Adminisshytrator in accordance with the provisions of 40 CFR s12536(b) and (c) A similar request should also be filed with the Director within thirty (30) days of the date of receipt of this determination in accordance with the provisions of the Massachusetts Administrative Procedure Act and the Divisions Rules for the Conduct of Adjudicatory Proceedings

Finally please note that this permit does not relieve the permittee from the responsibility of compliance with Section 311 of the Federal Act and Section 27(14) of the State Act These sections prohibit the discharge of harmful quantities of oil into the waters of the United States and require tha person in charge of a facility fron which an oil spill into such waters emanates to

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APPENDIX B

NPDES Permit shy MAY 21 1992 (pp 1-4 16 17 and 19)

1 1493 1293927AA

State Permit No 356 Federal Permit No MA0003891 Page 1 of 30

MODIFICATION OF AUTHORIZATION TO DISCHARGE UNDER THE NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM

In compliance with the provisions of the Federal Clean Water Act as amended (33 USC sectsect 1251 et seq the CWA) and the Massachusetts Clean Waters Act as amended (MGL Chap 21 sectsect26-53)

General Electric Company

is authorized to discharge from the facility located at

100 Woodlawn Avenue Pittsfield MA 01201

to receiving waters named

East Branch of the Housatonic River Silver Lake and Unkamet Brook

in accordance with effluent limitations monitoring requirements and other conditions set forth herein

This permit modification shall become effective on the date of issuance

This permit modification and the authorization to discharge shall expire at midnight February 7 1997

This modifies the permit issued on September 30 1988 which became effective on February 7 1992 due to the resolution of the permittees evidentiary hearing request

This permit modification consists of 30 pages in Part I including effluent limitations monitoring requirements etc and 22 pages in Part II including General Conditions and Definitions

this day of

w tf f^^^ ~ mdash _ mdash ^ ^ v ~___ trade _ i yiT ^ trader mdashmdashbull TI Director )C _ ) Director Division of Water Water Management Divrsi^n Pollution Control Environmental Protection Agency Department of Environmental Region I Protection Boston MA Commonwealth of Massachusetts

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APPENDIX C

Documentation Related to GE Releases to Silver Lake

1293927AA

11493

January 17 1989

Mr Craig Goff Department of Environmental Quality Engineering 436 Dwight Street Springfield MA 01103

Dear Craig

This is a follow-up of my January 13 1989 phone call at approximately 1140 AM to report an apparent spill to Silver Lake I had been alerted to a discoloration in the lake by our plant guard force at approximately 1135 AM

After calling I went to the site to observe the location extending some 25 to 40 feet along the southwesterly shore up to a maximum of 8 to 10 feet from shore The plume appeared stationary and exhibited no foaming or oiliness There was a light sheen very close to shore which did not appear to be associated with the brown rusty appearing water

The plume existed some 15 to 20 feet south of the visible outfall pipe at our NPDES discharge point 004 There was no evidence of any discoloration in the pipe or the stone under the outfall itself Just south of the southerly end of the plume is another water inlet source this one draining East Street from our main South gate to the lake Attached is a sketch showing the location of the plume

By 1230 PM we had sampled the discolored water and by 500 PM had determined it to be unusually oily with a 236 iron content in the total suspended solids

Mr Craig Goff January 17 1989 Page - 2 shy

I have enclosed a copy of our lab report While a comment appears that it may be possibly from pumping out a rusty tank or boiler I have checked for such a possibility and found no activity of that nature Additionally boilers and tanks are not permitted to be cleaned and discharged through any of our outfalls

The plume had dissipated by Monday morning without any increase in size

Yours truly

G Grant Bowman Manager - Environmental Engineering

Ijr

Attachments

GENERAL ELECTRIC

ENVIRONMENTAL Lf^BORPi

Title Analysis of Brown Water at Outfall 004 Number EL-89-003 Date January 16 1989

Test by GJ Desnoyers Requested by GG Bowman Report by WA Fessler Approved 4WA]sjAslt-^

On January 13 1989a brown discoloration was noted in Silver Lake around the outfall 004A sample of the water was collected by P Jahn and brought to the laboratory for analysis The following results were obtained

Sample Identification No 01453 Chain of Custody No 00544

Measured Value Permit Limit PH 66 Oil and Grease 179 rog1 150 mg1 Total Suspended Solids 400 mg1 Phenol 003 mg1

The metals contents of the water sample and of the solid collected in the TSS measurement were determined

Cone in Cone in Metal Water (mg1 TSS solid (

Aluminum 037 1 32 Boron 017 0 13 Barium 0017 0358 Bismuth 006 081 Calcium 156 116 Cadmium ND 0006 Cobalt ND 0007 Chromium 0008 0058 Copper 0070 0882 Iron 849 236 Magnesi um 606 0228 Manganese 0054 0153 Molybdenum 003 003 Sodium 288 181 Nickel 005 005 Phosphorus 02 06 Lead ND 011 Antimony 017 015 Silicon 237 106 Tin ND 016 Titanium ND 0014 Zinc 0037 107 Zirconium 0081 0043 Strontium 0033 0010

The brown solid appears to be primarily hydrated iron oxide (rust) possibly from pumping out a rusty tank or a boiler

DISTRIBUTION Manager Environmental Laboratory C23

MEND

TO File FROM WA Fessler DATE May 1 1990

SUBJECT Cloudy water in Silver Lake

Grant Bowman called me at 10^5 and told me that cloudy water had been reported in Silver lake in the area of outfall OOt

I went to the lake and observed an area of turbid aroa-along the shore of the lake south of outfall 00 The water coming from OO^t at that time was clear This looked like a repeat of the cloudy water from last Thursday except that there appeared to be floating material this time

I collected a grab sample for Oil and Grease (0ampG) from an area about 20 feet south of the outfall along the shore where there was a very turbid area of water

There were many tadpoles and fish swimming in the water They did not seem to try to avoid the turbid areas Many tadpoles scurried away when I collected the sample There was a dead raccoon on the shore in the area but it appeared to have been there for a while

Don Moore was contacted and he arranged to collect a grab sample for OampG from the normal OO^t sampling point

Since there was more floating material than I observed in last weeks incident Clean Harbors was instructed to boom and clean up the patches of cloudy water along the east shore of Silver Lake both north and south of outfall OO^t

Ed Verminski was contacted to investigate the cause of this incident in the Ordnance manufacturing operations discharging to outfall 00 + He reported that the discharge occurred as a result of people washing down the test cell While the separators were working properly under normal load there was apparently enough residual detergent in the separator to cause the formation of an emulsion when the high flow from the wash down hit the separator The separators have been shut down and the holding tanks are being pumped out to drums for disposal According to Kevin Biernacki the separators w i l l be pumped into the holding tanks which w i l l again be pumped out The separators and the tanks will be thoroughly cleaned before they are restored to use

Incident was reported by phone to Larry Galonka ( DEP Western Region) at 00 PM on May 1 1990

June 13 1990

Mr Robert Terenzi Department of Environmental Protection 436 Dwight Street Springfield MA 01103

Dear Mr Terenzi

The spill of an originally estimated 200-to-300 gallons of silicone oil to the drains leading to oilwater separator 31W at Silver Lake NPDES outfall 001 was reported to your office (Mr Sloweick) on May 3 1990 at 845 AM and a follow-up letter of May 7 1990 You personally responded visiting the site and observing the spill cleanup actions during the afternoon of May 3

Responding to the spill were GEs Plant Protection and Facilities personnel Clean Harbors on-site personnel and Clean Berkshires Pittsfield Within 15 minutes of the spills discovery the area at the storm drain north of Building 3 had been bermed and oil on the pavement soaked up Sorbent pads were placed in the catch basin itself and calls made to all operational personnel on the route to 31W to turn off all non-essential wastewater discharges (air conditioning and batch discharges) Four manholes on the route were opened with personnel creating under flow barriers backed up by sorbent after checking for oxygen and other restricted access criteria

A watch was placed on 31W including hourly oil and grease sampling Harbor booms and sorbent pads were deployed in the separator to provide for minimum turbulence and maximum time for the oil to float to the surface for pickup on the skimmer belts By mid-afternoon a harbor boom had been placed at outfall 001 and by late afternoon the boom had been extended outside the marshy area to which 001 discharges

At your request the Pittsfield Conservation Commission was contacted and a message regarding the situation left on their

Mr Robert Terenzi June 13 1990 Page - 2 shy

answering machine You called and discussed the situation with the Pittsfield Department of Health office

Discharge water at 001 was sampled for oil and grease hourly beginning at 925 AM on Thursday May 3 and ending at 840 AM on Friday May 4 Those sample results are attached OampG values exceeding our NPDES limit of 15 ingliter occurred over the eight hour period 1124 AM to 630 PM May 3 Based on water flow a total of approximately 28 pounds of OampG was discharged (approximately 4 gallons)

During May 3 and May 4 conditions on Silver Lake were calm in the area of the outfall and it is our belief from visual observation that over 90 of the four gallons was absorbed to sorbent pads

Clean Harbors personnel remained at 31W around the clock through Monday morning May 7 when it was clear no continuing release from the spill was entering the separator

A fairly significant rainfall began on the evening of May 4 On Saturday May 5 at approximately 9 AM an additional 600 feet of harbor boom was ordered to completely surround both the 31W discharge and the stormwater bypass discharge of 31W Although no oil was observed coming out of the bypass there was a sheen outside of the harbor boom at the bypass and it was deemed prudent to take the extra precaution

Since May 7 several storms have caused Silver Lake to rise and fall in the area of the 31W outfall with a slight sheen appearing In the past week no sheen has been observed in the area It is my belief that the spill events immediate effects have been cleaned up and the small amount that entered the lake has been recovered Based on estimates of Clean Harbors and Clean Berkshire personnel something less than 100 total gallons of oil was recovered from the event Considering the return to background levels of 3 mg1 of oil and grease observed at 31W by 1130 PM May 3 it is my opinion that the original estimate of 200-to-300 gallons was in error by a factor of 2-to-3

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Mr R Terenzi June 13 1990 Page - 3 shy

By copy of this final report I am requesting approval to remove the approximately 1000 of harbor boom from the lake The corrective action mentioned in my May 7 letter has been implemented

Yours truly


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cc WA Fessler PW Houle File - Spill Non-PCB

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SILVER LAKE DATA SUMMARY

TABLE OF CONTENTS

Page

SECTION 1 - BACKGROUND 1-1

SECTION 2 - SUMMARY OF SILVER LAKE SOIL SEDIMENT AND WATER-COLUMN DATA 2-1

SECTION 3 - ESTIMATED VOLUMES OF CONTAMINATED SEDIMENTS AND PCBs WITHIN SILVER LAKE 3-1

SECTION 4 - CURRENT AND HISTORIC OUTFALLS TO SILVER LAKE 4-1 41 Cur ren t Out fa l ls 4-1 42 Histor ic Out fa l ls 4-3

SECTION 5 - MANUFACTURING PROCESSES CONDUCTED IN VICINITY OF SILVER LAKE 5-1

SECTION 6 - PERMITTED AND NON-PERMITTED DISCHARGES TO SILVER LAKE 6-1

REFERENCES

FIGURES

1 - Summary of Silver Lake Sediment and Sur face Water Data 2 - Facil i ty Drainage 3 - Schematic Plan - Oi l Water Separator 31W 4 - Addit ional Municipal Sewer Outfal ls

APPENDICES

A - NPDES Permit - December 19 1975 B - NPDES Permit - May 21 1992 C - Documentat ion Related to GE Releases to Si lver Lake

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APPENDIX C


1293927AA

11493

January 17 1989


Dear Craig








Yours truly


Ijr

Attachments

GENERAL ELECTRIC












MEND











June 13 1990


Dear Mr Terenzi














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Yours truly


Ijr

Enclosure


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sampling results




specif ied








11493 1-1 1293927 AA




11993 1-2 1293927AA


WATER-COLUMN DATA





















11993 2-1 1293927AA












11493 2-2 1293927AA

























11993 3-1 1293927 AA







tt993 3-2 1293927 AA










Outfa l l 001002

















11993 4-1 1293927AA

O u t f a l l 001A





ou t fa l l

Outfal l 003




Outfal l 004














11493 4-2 1293927AA







11993 4-3 1293927AA


SILVER LAKE







Laborator ies



operat ion











11993 5-1 1290927M


1993






welding rods







Assembly





xylene






11493 5-2 1293927AA










aluminum and paints






14M 5-3 1293927AA







Silver Lake



















11993 6-1 1293927M


























11993 6-2 1293927AA

















11993 6-3 1293927AA

References

R E F E R E N C E S









129392 AA 11 9 93

Figures

TARGET SHEET


(X) OVERSIZED MAP

() NON-PAPER MEDIA

() OTHER

DOC ID 213401

DATE 1111993





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FIGURE






SEWER OUTFALLS

Silver LakeOutfall




Appendices

APPENDIX A


1 1493

1293927AA

o


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Stat (SO

December 19 1975

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APPENDIX C


1293927AA

11493

January 17 1989


Dear Craig








Yours truly


Ijr

Attachments

GENERAL ELECTRIC












MEND











June 13 1990


Dear Mr Terenzi














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11993 1-2 1293927AA


WATER-COLUMN DATA





















11993 2-1 1293927AA












11493 2-2 1293927AA

























11993 3-1 1293927 AA







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welding rods







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11493 5-2 1293927AA










aluminum and paints






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11993 6-1 1293927M


























11993 6-2 1293927AA

















11993 6-3 1293927AA

References

R E F E R E N C E S









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Appendices

APPENDIX A


1 1493

1293927AA

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APPENDIX C


1293927AA

11493

January 17 1989


Dear Craig








Yours truly


Ijr

Attachments

GENERAL ELECTRIC












MEND











June 13 1990


Dear Mr Terenzi














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Ijr

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11993 2-1 1293927AA












11493 2-2 1293927AA

























11993 3-1 1293927 AA







tt993 3-2 1293927 AA










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11993 4-1 1293927AA

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11493 4-2 1293927AA







11993 4-3 1293927AA


SILVER LAKE







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11993 5-1 1290927M


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welding rods







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xylene






11493 5-2 1293927AA










aluminum and paints






14M 5-3 1293927AA







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11993 6-1 1293927M


























11993 6-2 1293927AA

















11993 6-3 1293927AA

References

R E F E R E N C E S









129392 AA 11 9 93

Figures

TARGET SHEET


(X) OVERSIZED MAP

() NON-PAPER MEDIA

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DATE 1111993





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Silver LakeOutfall




Appendices

APPENDIX A


1 1493

1293927AA

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Region i _ bdquo









Stat (SO

December 19 1975

Gentlemen




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APPENDIX C


1293927AA

11493

January 17 1989


Dear Craig








Yours truly


Ijr

Attachments

GENERAL ELECTRIC












MEND











June 13 1990


Dear Mr Terenzi














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Ijr

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References

R E F E R E N C E S









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Appendices

APPENDIX A


1 1493

1293927AA

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APPENDIX C


1293927AA

11493

January 17 1989


Dear Craig








Yours truly


Ijr

Attachments

GENERAL ELECTRIC












MEND











June 13 1990


Dear Mr Terenzi














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R E F E R E N C E S









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Appendices

APPENDIX A


1 1493

1293927AA

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APPENDIX C


1293927AA

11493

January 17 1989


Dear Craig








Yours truly


Ijr

Attachments

GENERAL ELECTRIC












MEND











June 13 1990


Dear Mr Terenzi














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R E F E R E N C E S









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Appendices

APPENDIX A


1 1493

1293927AA

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Region i _ bdquo









Stat (SO

December 19 1975

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APPENDIX C


1293927AA

11493

January 17 1989


Dear Craig








Yours truly


Ijr

Attachments

GENERAL ELECTRIC












MEND











June 13 1990


Dear Mr Terenzi














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Yours truly


Ijr

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11993 4-3 1293927AA


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11993 5-1 1290927M


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11493 5-2 1293927AA










aluminum and paints






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11993 6-1 1293927M


























11993 6-2 1293927AA

















11993 6-3 1293927AA

References

R E F E R E N C E S









129392 AA 11 9 93

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() NON-PAPER MEDIA

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DATE 1111993





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SEWER OUTFALLS

Silver LakeOutfall




Appendices

APPENDIX A


1 1493

1293927AA

o


Region i _ bdquo









Stat (SO

December 19 1975

Gentlemen




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1 1493 1293927AA














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APPENDIX C


1293927AA

11493

January 17 1989


Dear Craig








Yours truly


Ijr

Attachments

GENERAL ELECTRIC












MEND











June 13 1990


Dear Mr Terenzi














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Yours truly


Ijr

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11493 4-2 1293927AA







11993 4-3 1293927AA


SILVER LAKE







Laborator ies



operat ion











11993 5-1 1290927M


1993






welding rods







Assembly





xylene






11493 5-2 1293927AA










aluminum and paints






14M 5-3 1293927AA







Silver Lake



















11993 6-1 1293927M


























11993 6-2 1293927AA

















11993 6-3 1293927AA

References

R E F E R E N C E S









129392 AA 11 9 93

Figures

TARGET SHEET


(X) OVERSIZED MAP

() NON-PAPER MEDIA

() OTHER

DOC ID 213401

DATE 1111993





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SEWER OUTFALLS

Silver LakeOutfall




Appendices

APPENDIX A


1 1493

1293927AA

o


Region i _ bdquo









Stat (SO

December 19 1975

Gentlemen




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APPENDIX C


1293927AA

11493

January 17 1989


Dear Craig








Yours truly


Ijr

Attachments

GENERAL ELECTRIC












MEND











June 13 1990


Dear Mr Terenzi














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11993 4-3 1293927AA


SILVER LAKE







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11993 5-1 1290927M


1993






welding rods







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xylene






11493 5-2 1293927AA










aluminum and paints






14M 5-3 1293927AA







Silver Lake



















11993 6-1 1293927M


























11993 6-2 1293927AA

















11993 6-3 1293927AA

References

R E F E R E N C E S









129392 AA 11 9 93

Figures

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(X) OVERSIZED MAP

() NON-PAPER MEDIA

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DATE 1111993





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SEWER OUTFALLS

Silver LakeOutfall




Appendices

APPENDIX A


1 1493

1293927AA

o


Region i _ bdquo









Stat (SO

December 19 1975

Gentlemen




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1 1493 1293927AA














this day of


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APPENDIX C


1293927AA

11493

January 17 1989


Dear Craig








Yours truly


Ijr

Attachments

GENERAL ELECTRIC












MEND











June 13 1990


Dear Mr Terenzi














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Yours truly


Ijr

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SILVER LAKE







Laborator ies



operat ion











11993 5-1 1290927M


1993






welding rods







Assembly





xylene






11493 5-2 1293927AA










aluminum and paints






14M 5-3 1293927AA







Silver Lake



















11993 6-1 1293927M


























11993 6-2 1293927AA

















11993 6-3 1293927AA

References

R E F E R E N C E S









129392 AA 11 9 93

Figures

TARGET SHEET


(X) OVERSIZED MAP

() NON-PAPER MEDIA

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DATE 1111993





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FIGURE






SEWER OUTFALLS

Silver LakeOutfall




Appendices

APPENDIX A


1 1493

1293927AA

o


Region i _ bdquo









Stat (SO

December 19 1975

Gentlemen




(J PARTI



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itati

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6 QJ degE3

ai tQ D

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c o pound

g

monito

r

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co n

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5 gt i g








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1

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)



rH to CO JO


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nd

ard

units

and s

than

tr

ace

a

mo

un

ts

CJ M

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rem

ent

y M

ax

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req

ue

ncy





CO rH C rH 0


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treatm

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ifie

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e

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th

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b

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th

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mp

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te

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n

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an

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sure

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e o ho ^~s V

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uar So E sa s c

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is

sue

and

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ing

thro

ugh

Dec

embe

r 31

1

97

6

d to

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ge f

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out

fall

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00

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ed a

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fa c







APPENDIX B


1 1493 1293927AA














this day of


Boston MA

c

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E-i cc

APPENDIX C


1293927AA

11493

January 17 1989


Dear Craig








Yours truly


Ijr

Attachments

GENERAL ELECTRIC












MEND











June 13 1990


Dear Mr Terenzi














numcsshy

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Yours truly


Ijr

Enclosure


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1993






welding rods







Assembly





xylene






11493 5-2 1293927AA










aluminum and paints






14M 5-3 1293927AA







Silver Lake



















11993 6-1 1293927M


























11993 6-2 1293927AA

















11993 6-3 1293927AA

References

R E F E R E N C E S









129392 AA 11 9 93

Figures

TARGET SHEET


(X) OVERSIZED MAP

() NON-PAPER MEDIA

() OTHER

DOC ID 213401

DATE 1111993





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SEWER OUTFALLS

Silver LakeOutfall




Appendices

APPENDIX A


1 1493

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1 1493 1293927AA














this day of


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APPENDIX C


1293927AA

11493

January 17 1989


Dear Craig








Yours truly


Ijr

Attachments

GENERAL ELECTRIC












MEND











June 13 1990


Dear Mr Terenzi














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References

R E F E R E N C E S









129392 AA 11 9 93

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TARGET SHEET


(X) OVERSIZED MAP

() NON-PAPER MEDIA

() OTHER

DOC ID 213401

DATE 1111993





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SEWER OUTFALLS

Silver LakeOutfall




Appendices

APPENDIX A


1 1493

1293927AA

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Stat (SO

December 19 1975

Gentlemen




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1 1493 1293927AA














this day of


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APPENDIX C


1293927AA

11493

January 17 1989


Dear Craig








Yours truly


Ijr

Attachments

GENERAL ELECTRIC












MEND











June 13 1990


Dear Mr Terenzi














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Yours truly


Ijr

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References

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129392 AA 11 9 93

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TARGET SHEET


(X) OVERSIZED MAP

() NON-PAPER MEDIA

() OTHER

DOC ID 213401

DATE 1111993





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SEWER OUTFALLS

Silver LakeOutfall




Appendices

APPENDIX A


1 1493

1293927AA

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Stat (SO

December 19 1975

Gentlemen




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APPENDIX B


1 1493 1293927AA














this day of


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APPENDIX C


1293927AA

11493

January 17 1989


Dear Craig








Yours truly


Ijr

Attachments

GENERAL ELECTRIC












MEND











June 13 1990


Dear Mr Terenzi














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(X) OVERSIZED MAP

() NON-PAPER MEDIA

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DOC ID 213401

DATE 1111993





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Appendices

APPENDIX A


1 1493

1293927AA

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Stat (SO

December 19 1975

Gentlemen




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1 1493 1293927AA














this day of


Boston MA

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APPENDIX C


1293927AA

11493

January 17 1989


Dear Craig








Yours truly


Ijr

Attachments

GENERAL ELECTRIC












MEND











June 13 1990


Dear Mr Terenzi














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(X) OVERSIZED MAP

() NON-PAPER MEDIA

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DOC ID 213401

DATE 1111993





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SEWER OUTFALLS

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Appendices

APPENDIX A


1 1493

1293927AA

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Stat (SO

December 19 1975

Gentlemen




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APPENDIX B


1 1493 1293927AA














this day of


Boston MA

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APPENDIX C


1293927AA

11493

January 17 1989


Dear Craig








Yours truly


Ijr

Attachments

GENERAL ELECTRIC












MEND











June 13 1990


Dear Mr Terenzi














numcsshy

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() NON-PAPER MEDIA

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DOC ID 213401

DATE 1111993





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Appendices

APPENDIX A


1 1493

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1 1493 1293927AA














this day of


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APPENDIX C


1293927AA

11493

January 17 1989


Dear Craig








Yours truly


Ijr

Attachments

GENERAL ELECTRIC












MEND











June 13 1990


Dear Mr Terenzi














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() NON-PAPER MEDIA

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DOC ID 213401

DATE 1111993





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Appendices

APPENDIX A


1 1493

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1 1493 1293927AA














this day of


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APPENDIX C


1293927AA

11493

January 17 1989


Dear Craig








Yours truly


Ijr

Attachments

GENERAL ELECTRIC












MEND











June 13 1990


Dear Mr Terenzi














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1 1493

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1 1493 1293927AA














this day of


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APPENDIX C


1293927AA

11493

January 17 1989


Dear Craig








Yours truly


Ijr

Attachments

GENERAL ELECTRIC












MEND











June 13 1990


Dear Mr Terenzi














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1 1493 1293927AA














this day of


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APPENDIX C


1293927AA

11493

January 17 1989


Dear Craig








Yours truly


Ijr

Attachments

GENERAL ELECTRIC












MEND











June 13 1990


Dear Mr Terenzi














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Appendices

APPENDIX A


1 1493

1293927AA

o


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Stat (SO

December 19 1975

Gentlemen




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APPENDIX B


1 1493 1293927AA














this day of


Boston MA

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APPENDIX C


1293927AA

11493

January 17 1989


Dear Craig








Yours truly


Ijr

Attachments

GENERAL ELECTRIC












MEND











June 13 1990


Dear Mr Terenzi














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APPENDIX A


1 1493

1293927AA

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Stat (SO

December 19 1975

Gentlemen




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APPENDIX B


1 1493 1293927AA














this day of


Boston MA

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APPENDIX C


1293927AA

11493

January 17 1989


Dear Craig








Yours truly


Ijr

Attachments

GENERAL ELECTRIC












MEND











June 13 1990


Dear Mr Terenzi














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Appendices

APPENDIX A


1 1493

1293927AA

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Stat (SO

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APPENDIX B


1 1493 1293927AA














this day of


Boston MA

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APPENDIX C


1293927AA

11493

January 17 1989


Dear Craig








Yours truly


Ijr

Attachments

GENERAL ELECTRIC












MEND











June 13 1990


Dear Mr Terenzi














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APPENDIX A


1 1493

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APPENDIX B


1 1493 1293927AA














this day of


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APPENDIX C


1293927AA

11493

January 17 1989


Dear Craig








Yours truly


Ijr

Attachments

GENERAL ELECTRIC












MEND











June 13 1990


Dear Mr Terenzi














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1 1493

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APPENDIX B


1 1493 1293927AA














this day of


Boston MA

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APPENDIX C


1293927AA

11493

January 17 1989


Dear Craig








Yours truly


Ijr

Attachments

GENERAL ELECTRIC












MEND











June 13 1990


Dear Mr Terenzi














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Yours truly


Ijr

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APPENDIX B


1 1493 1293927AA














this day of


Boston MA

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APPENDIX C


1293927AA

11493

January 17 1989


Dear Craig








Yours truly


Ijr

Attachments

GENERAL ELECTRIC












MEND











June 13 1990


Dear Mr Terenzi














numcsshy

â-ncla

7LG rzL_

- shy - w

p j-l

_oilurr

Cum-- I bull- i = 2

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j

3

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f

3^1 bull333shy33

33

3

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APPENDIX B


1 1493 1293927AA














this day of


Boston MA

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APPENDIX C


1293927AA

11493

January 17 1989


Dear Craig








Yours truly


Ijr

Attachments

GENERAL ELECTRIC












MEND











June 13 1990


Dear Mr Terenzi














numcsshy

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APPENDIX B


1 1493 1293927AA














this day of


Boston MA

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APPENDIX C


1293927AA

11493

January 17 1989


Dear Craig








Yours truly


Ijr

Attachments

GENERAL ELECTRIC












MEND











June 13 1990


Dear Mr Terenzi














numcsshy

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337 f L 3 _K^ E1 7 lC9131 103153710ISO153 IcE 1 53

bull shy shy

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30=- 309sshy

3099 31 13

(j~i ^ V A ^ - t j


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3 -bullbull 7

3 9 I i E

i0 10

^ ^

C M





Yours truly


Ijr

Enclosure


1 1 H pii H n

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1 1493 1293927AA














this day of


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APPENDIX C


1293927AA

11493

January 17 1989


Dear Craig








Yours truly


Ijr

Attachments

GENERAL ELECTRIC












MEND











June 13 1990


Dear Mr Terenzi














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Yours truly


Ijr

Enclosure


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