GE Pittsfield, MA 01201 USA · Pittsfield, MA 01201 . USA . Transmitted via Overnight Courier ....

GE 159 Plastics Avenue Pittsfield, MA 01201

USA

Transmitted via Overnight Courier

October 9, 2012

Mr. Dean Tagliaferro Mr. Michael Gorski U.S. Environmental Protection Agency Regional Director Region I-New England Western Regional Office 10 Lyman Street, Suite 2 Department of Environmental Protection Pittsfield, MA 01201 436 Dwight Street

Springfield, MA 01103

Re: GE-Pittsfield/Housatonic River Site Monthly Status Report Pursuant to Consent Decree September 2012 (GECD900)

Dear Mr. Tagliaferro and Mr. Gorski:

Enclosed are copies of General Electric's (GE's) monthly progress report for September 2012 activities conducted by GE at the GE-Pittsfield/Housatonic River Site. This monthly report is submitted pursuant to Paragraph 67 of the Consent Decree (CD) for this Site, which was entered by the U.S. District Court on October 27, 2000.

The enclosed monthly report includes not only the activities conducted by GE under the CD, but also other activities conducted by GE at the GE-Pittsfield/Housatonic River Site (as defined in the CD). The report is formatted to apply to the various areas of the Site as defined in the CD, and to provide for each area, the information specified in Paragraph 67 of the CD. The activities conducted specifically pursuant to or in connection with the CD are marked with an asterisk. GE is submitting a separate monthly report to the Massachusetts Department of Environmental Protection (MDEP), with a copy to the United States Environmental Protection Agency (EPA), describing the activities conducted by GE at properties outside the CD Site pursuant to GE's November 2000 Administrative Consent Order from MDEP.

The enclosed monthly report includes, where applicable, tables that list the samples collected during the subject month, summarize the analytical results received during that month from sampling or other testing activities, and summarize other groundwater monitoring and oil recovery information obtained during that month. Also, enclosed for each of you (and for Weston) is a CD-ROM that contains these same tables ofthe analytical data and monitoring information in electronic form.

Please call me if you have any questions.

Sincerely,

/6t.ad tf.&flo ;£vc Richard W. Gates Remediation Project Manager

Enclosure

Corporate En, ircnmental Proqram

Mr. Dean Tagliaferro and Mr. Michael Gorski October 9, 20 12

Page 2 of2

cc: Richard Fisher, EPA Robert Cianciarulo, EPA (cover letter only) Tim Conway, EPA (cover letter only) Rose Howell, EPA (cover letter and CD-ROM of report) Holly Inglis, EPA (hard copy and CD-ROM of report) Susan Svirsky, EPA (Items 7, 15, and 20 only) R. Leitch, USACE (CD-ROM of report)

John Ziegler, MDEP (hard copy and CD-ROM of report)

Eva Tor, MDEP (cover letter and CD-ROM of report)

Karen Pelto, MDEP (CD-ROM of report)

Nancy E. Harper, MA AG

Susan Peterson, CT DEEP

Field Supervisor, US FWS, DOl

Kenneth Finkelstein, Ph.D., NOAA (Items 13, 14, and 15 only)

Mayor Daniel Bianchi, City of Pittsfield

Corydon L. Thurston, Director, Pittsfield Economic Development Authority

Linda Palmieri, Weston

Jack Yablonsky, Berkshire Gas (CD-ROM of report)

Richard Nasman, P.E., Berkshire Gas (cover letter only)

Michael Carroll GE (CD-ROM of report)

Andrew Silfer, GE (cover letter only)

Rod McLaren, GE (CD-ROM of report)

James Nuss, ARCADIS

James Bieke, Sidley Austin

Kevin Russell, Anchor QEA (narrative only)

Teresa Bowers, Gradient

Public Information Repositories (1 hard copy, 5 copies of CD-ROM)

GE Internal Repository (I hard copy)

(wlo separate CD-ROM, except where noted)

G:IGEIGE_Pittsfi e1d_Genera1\Reports and Presentations\Month1y Reports\20 12\09-1 2\Letter.doc

September 2012

MONTHLY STATUS REPORT

PURSUANT TO CONSENT DECREE

FOR

GE-PITTSFIELD/HOUSATONIC RIVER SITE

GENERAL ELECTRIC COMPANY

PITTSFIELD, MASSACHUSETTS

G:\GE\GE_Pittsfield_General\Reports and Presentations\Monthly Reports\2012\09-12\Monthly Background.doc

Background

The General Electric Company (GE), the United States Environmental Protection Agency (EPA), the Massachusetts Department of Environmental Protection (MDEP), and other governmental entities have entered into a Consent Decree (CD) for the GE-Pittsfield/Housatonic River Site, which was entered by the U.S. Court on October 27, 2000. In accordance with Paragraph 67 of the CD, GE is submitting this monthly report, prepared on GE’s behalf by ARCADIS (formerly Blasland, Bouck & Lee, Inc.), which summarizes the status of activities conducted by GE at the GE-Pittsfield/Housatonic River Site ("Site") (as defined in the CD).

This report covers activities in the areas listed below (as defined in the CD and/or the accompanying Statement of Work for Removal Actions Outside the River [SOW]). Only those areas that have had work activities for the month subject to reporting are included. The specific activities conducted pursuant to or in connection with the CD are noted with an asterisk.

General Activities (GECD900)

GE Plant Area (non-groundwater) 1. 20s, 30s, 40s Complexes (GECD120) 2. East Street Area 2 – South (GECD150) 3. East Street Area 2 – North (GECD140) 4. East Street Area 1 – North (GECD130) 5. Hill 78 and Building 71 Consolidation Areas (GECD210/220) 6. Hill 78 Area – Remainder (GECD160) 7. Unkamet Brook Area (GECD170)

Former Oxbow Areas (non-groundwater) 8. Former Oxbow Areas A & C (GECD410) 9. Lyman Street Area (GECD430) 10. Newell Street Area I (GECD440) 11. Newell Street Area II (GECD450) 12. Former Oxbow Areas J & K (GECD420)

Housatonic River 13. Upper ½-Mile Reach (GECD800) 14. 1½-Mile Reach (only for activities, if any, conducted by GE) (GECD820) 15. Rest of the River (GECD850)

Housatonic River Floodplain 16. Current Residential Properties Adjacent to 1½-Mile Reach (Actual/Potential Lawns)

(GECD710) 17. Non-Residential Properties Adjacent to 1½-Mile Reach (excluding banks)

(GECD720) 18. Current Residential Properties Downstream of Confluence (Actual/Potential Lawns)

(GECD730)

Other Areas 19. Allendale School Property (GECD500) 20. Silver Lake Area (GECD600)


Groundwater Management Areas (GMAs) 21. Plant Site 1 (GECD310) 22. Former Oxbows J & K (GECD320) 23. Plant Site 2 (GECD330) 24. Plant Site 3 (GECD340)

24A. On-Plant Consolidation Areas, Post-Closure Program 25. Former Oxbows A&C (GECD350)


GENERAL ACTIVITIES GE-PITTSFIELD/HOUSATONIC RIVER SITE

(GECD900)

SEPTEMBER 2012

a. Activities Undertaken/Completed

- Continued GE-EPA electronic data exchanges for the Housatonic River Watershed.*

- Continued development of updates to the Project Operations Plan (POP) and Site Health and Safety Plan (HASP).*

b. Sampling/Test Results Received

- Sample results were received for routine sampling conducted pursuant to GE’s NPDES Permit for the GE facility. Sampling records and results are provided in Attachment A to this report.

- NPDES Discharge Monitoring Reports (DMRs) for the period of August 1 through August 31, 2012 are provided in Attachment B to this report.

c. Work Plans/Reports/Documents Submitted

- Submitted draft updates to the Field Sampling Plan/Quality Assurance Project Plan (FSP/QAPP) to EPA (September 20, 2012).

- Submitted supplemental information to EPA regarding out-of-state shipments of waste material from response actions under the Consent Decree (September 21, 2012).

d. Upcoming Scheduled and Anticipated Activities (next six weeks)

- Continue NPDES Permit-related sampling and monitoring activities.

- Issue Request for Proposal (RFP) for implementation of GE’s Revised Investigation, Oil Removal, and Capping Plan for Former 10c Oil Pipelines at the GE Plant Area, which was submitted by GE in June 2012 and conditionally approved by EPA on July 19, 2012.*

- Attend public and Citizens Coordinating Council (CCC) meetings, as appropriate.

- Continue development of, and submit to EPA, revisions to the POP and HASP.*

- Submit copies of GE’s insurance policies, along with certificates of insurance, to EPA and MDEP pursuant to Paragraph 127 of the CD.*

GENERAL ACTIVITIES (cont’d)

GE-PITTSFIELD/HOUSATONIC RIVER SITE

(GECD900)

SEPTEMBER 2012

e. General Progress/Unresolved Issues/Potential Schedule Impacts

- Evaluate the scheduling of construction activities for the 10c oil pipelines project and discuss scheduling with EPA as appropriate.*

- GE’s dispute of EPA’s cost bill for fiscal year 2011 remains pending.*

- Discussions with EPA may be necessary regarding the need to evaluate the potential impact of EPA’s new non-cancer reference dose (RfD) for dioxin on various areas of the Site.*

f. Proposed/Approved Work Plan Modifications

None

ITEM 1

PLANT AREA

20s, 30s, 40s COMPLEXES (GECD120)

SEPTEMBER 2012


None


None


Submitted a report on the August 22, 2012 annual inspection of the temporary stockpile area and embankments at the former 40s Complex to EPA (September 20, 2012).


- Following execution and MDEP acceptance of the Amended Grants of Environmental Restrictions and Easements (EREs) for the former 20s and 30s Complexes (prepared by the Pittsfield Economic Development Authority [PEDA]), record GE’s previously executed subordination agreements for those Amended EREs.*

- Perform the annual ERE inspections of the former 20s, 30s, and 40s Complexes.*


No issues.


None

ITEM 2

PLANT AREA

EAST STREET AREA 2-SOUTH

(GECD150)

SEPTEMBER 2012


- Conducted Liquid-Phase Carbon Absorption (LPCA) sampling at the Building 64G Groundwater Treatment Facility (GWTF), as indicated in Table 2-1.

- Conducted sampling of oil generated from well pump cleaning, as indicated in Table 2-1.

- Performed the annual post-remediation inspection of the cover at the City Recreational Area on September 11, 2012.*

- Sent request for subordination agreement for ERE for this area to CSX Transportation, Inc.*


See attached tables.


- Submitted revised draft Final Completion Report (FCR) to EPA (September 6, 2012).*

- Submitted a report on the August 14, 2012 inspection of natural resource restoration/ enhancement (NRRE) measures to the natural resource trustees (September 18, 2012).*

- Submitted a report on the August 2012 inspection of engineered barriers, backfilled/restored areas, enhanced pavement areas, certain vegetation, former building foundations, and certain paved areas to EPA (September 28, 2012).*


- Submit report on the September 11, 2012 post-remediation inspection of the cover at the City Recreational Area.*

- Mow vegetative portions of the engineered barrier and other grassland areas in Averaging Area 4E (excluding areas where trees and shrubs have been planted).*

- Discuss with City representatives and arrange for City Council to review proposed transfer of the small City-owned property within East Street Area 2-South to GE, as well as subordination agreements by the City for the ERE for this area; and if approved, arrange for transfer of City property to GE and the City’s execution of subordination agreements.*

ITEM 2

(cont’d)

PLANT AREA

EAST STREET AREA 2-SOUTH

(GECD150)

SEPTEMBER 2012

d. Upcoming Scheduled and Anticipated Activities (next six weeks) (cont’d)

- Conduct the Pre-Certification Inspection with EPA and MDEP.*

- Revise and resubmit the draft FCR to address EPA comments on September 6 draft.*

- Perform a wet weather ambient monitoring event in accordance with GE’s Wet Weather Ambient Monitoring Plan.

- Perform a dry weather ambient monitoring event in accordance with GE’s Dry Weather Ambient Monitoring Plan.


No issues.


None

TABLE 2-1 DATA RECEIVED AND/OR SAMPLES COLLECTED DURING SEPTEMBER 2012

EAST STREET AREA 2 - SOUTH GENERAL ELECTRIC COMPANY - PITTSFIELD MASSACHUSETTS

Date Received by GE Project Name Field Sample ID Sample Date Matrix Laboratory Analyses or ARCADIS

Building 64G LPCA Monitoring I12-64G-01 9/23/12 Water Columbia VOC Building 64G LPCA Monitoring I12-64G-02 9/23/12 Water Columbia VOC Building 64G LPCA Monitoring I12-64G-03 9/23/12 Water Columbia VOC Building 64G LPCA Monitoring I12-64G-04 9/23/12 Water Columbia VOC Building 64G LPCA Monitoring I12-64G-05 9/23/12 Water Columbia SVOC Building 64G LPCA Monitoring I12-64G-06 9/23/12 Water Columbia SVOC Building 64G LPCA Monitoring I12-64G-07 9/23/12 Water Columbia SVOC Building 64G LPCA Monitoring I12-64G-08 9/23/12 Water Columbia SVOC Building 64G LPCA Monitoring I12-64G-09 9/23/12 Water Columbia VOC Building 64G LPCA Monitoring I12-64G-10 9/23/12 Water Columbia VOC Building 64G LPCA Monitoring I12-64G-11 9/23/12 Water Columbia VOC Building 64G LPCA Monitoring I12-64G-12 9/23/12 Water Columbia VOC Building 64G LPCA Monitoring I12-64G-PC-13 9/23/12 Water SGS PCB Building 64G LPCA Monitoring I12-64G-PC-14 9/23/12 Water SGS PCB Building 64G LPCA Monitoring I12-64G-PC-15 9/23/12 Water SGS PCB Building 64G LPCA Monitoring I12-64G-PC-16 9/23/12 Water SGS PCB Building 64G LPCA Monitoring I12-64G-PC-17 9/23/12 Water SGS PCB

Oil Generated from Cleaning a Well Pump C3107 9/6/12 Oil SGS PCB 9/21/12

G:\GE\GE_Pittsfield_General\Reports and Presentations\Monthly Reports\2012\09-12\Tracking Logs\ Tracking.xlsm - TABLE 2-1 1 of 1 10/9/2012

TABLE 2-2 PCB DATA RECEIVED DURING SEPTEMBER 2012

OIL GENERATED FROM CLEANING A WELL PUMP EAST STREET AREA 2-SOUTH

GENERAL ELECTRIC COMPANY - PITTSFIELD, MASSACHUSETTS (Results are presented in parts per million, ppm)

Sample ID Date

Collected Aroclor-1016, 1221, -1232, -1242, -1248 Aroclor-1254 Aroclor-1260 Total PCBs

C3107 9/6/2012 ND(20) ND(20) 110 110

Notes: 1. Sample was collected by Veolia ES Technical Solutions, L.L.C. and submitted to SGS

Environmental Services, Inc. for analysis of PCBs. 2. ND - Analyte was not detected. The number in parentheses is the associated detection limit.

G:\GE\GE_Pittsfield_General\Reports and Presentations\Monthly Reports\2012\09-12\Analytical Data Tables\ Tables.xlsx - 2-2 Page 1 of 1 10/9/2012

ITEM 3

PLANT AREA

EAST STREET AREA 2-NORTH

(GECD140)

SEPTEMBER 2012


- Collected and transferred approximately 78,000 gallons of water from Building 9 to the Building 64G GWTF for treatment.

- Received and reviewed revised bids for the demolition of the Building 9 and 10 Complex and the former steam line trestle.

- Conducted characterization wipe sampling for the Building 9 steam line trestle, as indicated in Table 3-1.




None


- Perform the annual ERE inspections of the former 19s Complex and Woodlawn Avenue.*

- Complete bidding process, select contractor, and begin work on the demolition of Building 9 and 10 Complex and the former steam line trestle, including implementation of GE’s Revised Cleanup Plan for Building 9 Sub-Vault (submitted on June 12, 2012 and approved by EPA on July 17, 2012).

- Continue characterization sampling of the former steam line and trestle structure for ultimate disposition.

- Following receipt of comments from EPA and MDEP on the revised draft ERE for the portion of East Street Area 2-North outside the former 19s Complex (submitted in April 2012), revise that draft Revised ERE and prepare requests for subordination agreements for that Revised ERE.*

ITEM 3

(cont’d)

PLANT AREA


(GECD140)

SEPTEMBER 2012


f.

Work on the demolition of Building 9 and 10 Complex and the former steam line trestle is expected to commence in October and extend into the Spring of 2013.

Proposed/Approved Work Plan Modifications

None


EAST STREET AREA 2 - NORTH GENERAL ELECTRIC COMPANY - PITTSFIELD MASSACHUSETTS


Building 9 Complex Steam Line Trestle Sampling B9-SLT-W1 9/13/12 Wipe SGS PCB 9/25/12 Building 9 Complex Steam Line Trestle Sampling B9-SLT-W10 9/13/12 Wipe SGS PCB 9/25/12 Building 9 Complex Steam Line Trestle Sampling B9-SLT-W2 9/13/12 Wipe SGS PCB 9/25/12 Building 9 Complex Steam Line Trestle Sampling B9-SLT-W3 9/13/12 Wipe SGS PCB 9/25/12 Building 9 Complex Steam Line Trestle Sampling B9-SLT-W4 9/13/12 Wipe SGS PCB 9/25/12 Building 9 Complex Steam Line Trestle Sampling B9-SLT-W5 9/13/12 Wipe SGS PCB 9/25/12 Building 9 Complex Steam Line Trestle Sampling B9-SLT-W6 9/13/12 Wipe SGS PCB 9/25/12 Building 9 Complex Steam Line Trestle Sampling B9-SLT-W7 9/13/12 Wipe SGS PCB 9/25/12 Building 9 Complex Steam Line Trestle Sampling B9-SLT-W8 9/13/12 Wipe SGS PCB 9/25/12 Building 9 Complex Steam Line Trestle Sampling B9-SLT-W9 9/13/12 Wipe SGS PCB 9/25/12



BUILDING 9 COMPLEX STEAM LINE TRESTLE SAMPLING EAST STREET AREA 2 - NORTH

GENERAL ELECTRIC COMPANY - PITTSFIELD, MASSACHUSETTS (Results are presented in μg/100cm2)

Sample ID Date

Collected Aroclor-1016 Aroclor-1221 Aroclor-1232 Aroclor-1242 Aroclor-1248 Aroclor-1254 Aroclor-1260 Total PCBs B9-SLT-W1 9/13/2012 ND(1.0) ND(1.0) ND(1.0) ND(1.0) ND(1.0) ND(1.0) ND(1.0) ND(1.0) B9-SLT-W2 9/13/2012 ND(1.0) ND(1.0) ND(1.0) ND(1.0) ND(1.0) ND(1.0) ND(1.0) ND(1.0) B9-SLT-W3 9/13/2012 ND(1.0) ND(1.0) ND(1.0) ND(1.0) ND(1.0) ND(1.0) ND(1.0) ND(1.0) B9-SLT-W4 9/13/2012 ND(1.0) ND(1.0) ND(1.0) ND(1.0) ND(1.0) ND(1.0) ND(1.0) ND(1.0) B9-SLT-W5 9/13/2012 ND(1.0) ND(1.0) ND(1.0) ND(1.0) ND(1.0) ND(1.0) ND(1.0) ND(1.0) B9-SLT-W6 9/13/2012 ND(1.0) ND(1.0) ND(1.0) ND(1.0) ND(1.0) ND(1.0) ND(1.0) ND(1.0) B9-SLT-W7 9/13/2012 ND(1.0) ND(1.0) ND(1.0) ND(1.0) ND(1.0) ND(1.0) ND(1.0) ND(1.0) B9-SLT-W8 9/13/2012 ND(1.0) ND(1.0) ND(1.0) ND(1.0) ND(1.0) ND(1.0) ND(1.0) ND(1.0) B9-SLT-W9 9/13/2012 ND(1.0) ND(1.0) ND(1.0) ND(1.0) ND(1.0) ND(1.0) ND(1.0) ND(1.0) B9-SLT-W10 9/13/2012 ND(1.0) ND(1.0) ND(1.0) ND(1.0) ND(1.0) ND(1.0) ND(1.0) ND(1.0)

Notes: 1. Samples were collected by ARCADIS and submitted to SGS Environmental Services, Inc. for analysis of PCBs . 2. ND - Analyte was not detected. The number in parentheses is the associated detection limit.

Page 1 of 1

G:\GE\GE_Pittsfield_General\Reports and Presentations\Monthly Reports\2012\09-12\Analytical Data Tables\ Tables.xlsx - 3-2 10/9/2012

ITEM 4

PLANT AREA


(GECD130)

SEPTEMBER 2012


Initiated preparation of a request to MDEP for a Conditional Exception to the ERE restrictions to allow excavation and removal of the tank remnants or other metal objects observed during the conduct of exploratory excavations to assess a ground penetrating radar (GPR) anomaly to the west of Building 69.


None


None


- Submit request to MDEP for a Conditional Exception to the ERE restrictions to allow excavation and removal of the tank remnants or other metal objects observed during the conduct of exploratory excavations to assess a GPR anomaly to the west of Building 69.

- Conduct annual Conditional Solution inspections (in November).


No issues.


None

ITEM 5

PLANT AREA

HILL 78 & BUILDING 71 CONSOLIDATION

AREAS

(GECD210/220)

SEPTEMBER 2012

* All activities described below for this item were conducted pursuant to the Consent Decree.


- Conducted ambient air monitoring for PCBs (September 19-20, 2012), as indicated in Table 5-1.

- Collected and transferred approximately 6,000 gallons of leachate from the Building 71 On-Plant Consolidation Area (OPCA) to the Building 64G Groundwater Treatment Facility (GWTF) for treatment (see Table 5-2).

- Conducted preliminary data review (PDR) of PCB analytical data for ambient air samples collected from the OPCA air monitors on September 19-20, 2012. The PDR was conducted based on the following data quality indicators associated with the tabulated data set – sampling collection time, sampling calibration check, temperature receipt, associated blanks, laboratory control samples, recoveries and surrogate recoveries – in accordance with Validation Annex F in GE’s revised Field Sampling Plan/Quality Assurance Project Plan (FSP/QAPP) and the Region I Data Validation Functional Guidelines referenced therein. This PDR resulted in no qualifications of the data (see Table 5-3).

- Performed the summer 2012 post-closure inspection of the Building 71 OPCA and Hill 78 OPCA (including trees planted as part of restoration activities) on September 12, 2012.




Submitted report on the August 14, 2012 inspection of natural resource restoration/enhancement (NRRE) measures at the Hill 78 OPCA to the natural resource trustees (September 18, 2012).

ITEM 5

(cont’d)

PLANT AREA

HILL 78 & BUILDING 71 CONSOLIDATION AREAS

(GECD210/220)

SEPTEMBER 2012


- Complete Tier II data validation for ambient air sampling data collected from the OPCA air monitors upon receipt of full data package, and submit validated data to EPA.

- Submit report on the summer 2012 post-closure inspection of the Building 71 OPCA and Hill 78 OPCA (including trees planted as part of restoration activities) completed on September 12, 2012.

- Mow the herbaceous vegetation at the OPCAs.


No issues.


None


HILL 78/BUILDING 71 ON PLANT CONSOLIDATION AREAS GENERAL ELECTRIC COMPANY - PITTSFIELD MASSACHUSETTS

Project Name PCB Ambient Air Sampling PCB Ambient Air Sampling PCB Ambient Air Sampling PCB Ambient Air Sampling PCB Ambient Air Sampling PCB Ambient Air Sampling PCB Ambient Air Sampling

Field Sample ID Northwest of OPCAs

West of OPCAs West of OPCAs colocated

North of OPCAs Southeast of OPCAs

Pittsfield Generating (PGE) Background East of Building 9B

Sample Date 09/19-09/20/12 09/19-09/20/12 09/19-09/20/12 09/19-09/20/12 09/19-09/20/12 09/19-09/20/12 09/19-09/20/12

Matrix Air Air Air Air Air Air Air

Laboratory PACE PACE PACE PACE PACE PACE PACE

Analyses PCB PCB PCB PCB PCB PCB PCB

Date Received by GE or ARCADIS

9/27/2012 9/27/2012 9/27/2012 9/27/2012 9/27/2012 9/27/2012 9/27/2012


TABLE 5-2 BUILDING 71 CONSOLIDATION AREA LEACHATE TRANSFER SUMMARY

PLANT AREA - HILL 78 & BUILDING 71 CONSOLIDATION AREAS

CONSENT DECREE MONTHLY STATUS REPORT GENERAL ELECTRIC COMPANY - PITTSFIELD, MASSACHUSETTS

September 2012

Total Volume of Leachate Transferred

Month / Year (Gallons) September 2011 0

October 2011 10,000

November 2011 0

December 2011 0

January 2012 11,000

February 2012 0

March 2012 0

April 2012 6,000

May 2012 0

June 2012 6,000

July 2012 6,000

August 2012 0

September 2012 6,000

Note:1. Leachate is transferred from the Building 71 On-Plant

Consolidation Area to Building 64G for treatment.

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10/9/2012

TABLE 5-3 SUMMARY OF 2012 PCB AMBIENT AIR SAMPLING RESULTS HILL 78/BUILDING 71 ON PLANT CONSOLIDATION AREAS

GENERAL ELECTRIC COMPANY - PITTSFIELD, MASSACHUSETTS (all results are µg/m3)

Date Northwest of OPCAs West

of OPCAs

West of OPCAs colocated

North of OPCAs

Southeast of OPCAs

Pittsfield Generating

(PGE)

Background Sample Location (BK-3) -

East of Building 9B

Data Validated?

07/25/12 - 07/26/12 0.0008 J1 0.0010 J1 0.0010 J1 0.0008 J1 0.0007 J1 0.0007 J1 0.0012 J1 Tier I/II 09/19/12 - 09/20/12 0.0009 0.0015 0.0009 0.0007 0.0007 0.0007 0.0008 PDR2

Exceedances of Notification Level (0.05 µg/m3)

None None None None None None None

Notes: All sampling activities performed by Berkshire Environmental Consultants, Inc. All analytical activities performed by Pace Analytical

Services, Inc.

1 Sampling data that did not match the Aroclor pattern established through analysis of the target Aroclor standard (which consisted of data for Aroclor 1221) were qualified as estimated ("J"). 2 PDR was conducted based on the following data quality indicators associated with the tabulated data set above: sampling collection time, sampling calibration check, temperature receipt, associated blanks, laboratory control samples recoveries, and surrogate recoveries.

Page 1 of 1


ITEM 6

PLANT AREA

HILL 78 AREA - REMAINDER

(GECD160)

SEPTEMBER 2012


Performed the annual inspection of backfilled/restored areas on September 6, 2012.*


None


None


- Submit report on the September 6, 2012 inspection of backfilled/restored areas.*

- Following final approval by the City Council, establish and record a new easement for the City storm water and sewer pipelines that were relocated by GE, along with termination of the prior easement.


No issues.


None

ITEM 7

PLANT AREA

UNKAMET BROOK AREA

(GECD170)

SEPTEMBER 2012


- Received revised draft agreement from CSX Transportation, Inc. (CSX) for access to Parcel K11-4-2 to perform a video inspection of storm sewer lines and to Parcel L11-4-11 for placement of an interim cover over a portion of the service roadway.*

- Performed the September 2012 dry weather flow inspection activities associated with the YD11 and YD12 drainage systems in accordance with GE’s Dry Weather Ambient Monitoring Plan.

- Performed annual storm water discharge monitoring/sampling activities at YD10, YD11, and YD12 in accordance with the NPDES Permit.


c.


Work Plans/Reports/Documents Submitted

None


- Continue discussions with CSX regarding the revised draft agreement for access to Parcel K114-2 to perform a video inspection of storm sewer lines and to Parcel L11-4-11 for placement of an interim cover over a portion of the service roadway.*

- Upon completion of the CSX access agreement, arrange for placement of an interim cover over a portion of the service roadway on Parcel L11-4-11.*

- At EPA’s request, submit re-evaluation of dioxin/furan soil data in light of EPA’s new RfD for dioxin.

- Conduct discussions with EPA regarding the remaining issues relating to GE’s interim draft deliverables for Unkamet Brook Area-Remainder.*

- Work on development of a Final RD/RA Work Plan for Unkamet Brook Area-Remainder.*

- Receive reissued licenses from the U.S. Navy for access to the Navy property (Parcel L12-2-2) for the performance of the necessary investigations and remediation.*

ITEM 7

(cont’d)

PLANT AREA

UNKAMET BROOK AREA

(GECD170)

SEPTEMBER 2012


- Provide to EPA and MDEP a draft ERE and survey plan for the portion of GE-owned Parcel K11-7-2 within the Unkamet Brook Area.*

- Prepare requests for subordination agreements from encumbrance holders for the above ERE.*

- Provide to EPA and MDEP a draft ERE and survey plan for City-owned Parcel K11-7-9.*

- Perform October 2012 dry weather flow inspection activities associated with the YD11 and YD12 drainage systems in accordance with GE’s Dry Weather Ambient Monitoring Plan.

- Perform a wet weather ambient monitoring event in accordance with GE’s Wet Weather Ambient Monitoring Plan.

- Perform a dry weather ambient monitoring event in accordance with GE’s Dry Weather Ambient Monitoring Plan.


- It is anticipated that GE will submit a Final RD/RA Work Plan for Unkamet Brook Area-Remainder during the first quarter of 2013.*

- It is anticipated the ERE for the portion of GE-owned Parcel K11-7-2 within the Unkamet Book Area will not be completed until after the excavations on that property by GE in connection with investigation of inactive 10c oil pipelines have been completed.*

- Although GE has been advised by the U.S. Navy that the Navy has completed reissued licenses for GE’s access to the Navy property (Parcel L12-2-2) for the performance of the necessary investigations and remediation, GE continues to await receipt of those reissued licenses.*


None


UNKAMET BROOK AREA GENERAL ELECTRIC COMPANY - PITTSFIELD MASSACHUSETTS


NPDES Related 2012 YD Outfall Sampling YD-10-091812 9/18/12 Water Columbia Oil & Grease NPDES Related 2012 YD Outfall Sampling YD-10-091812 9/18/12 Water Columbia TSS, Zinc NPDES Related 2012 YD Outfall Sampling YD-10-091812 9/18/12 Water SGS PCB NPDES Related 2012 YD Outfall Sampling YD-11-090512 9/5/12 Water Columbia Oil & Grease 9/26/12 NPDES Related 2012 YD Outfall Sampling YD-11-090512 9/5/12 Water Columbia TSS, Zn (T) 9/26/12 NPDES Related 2012 YD Outfall Sampling YD-11-090512 9/5/12 Water SGS PCB 9/18/12 NPDES Related 2012 YD Outfall Sampling YD-12-090512 9/5/12 Water Columbia Oil & Grease 9/26/12 NPDES Related 2012 YD Outfall Sampling YD-12-090512 9/5/12 Water Columbia TSS, Zn (T) 9/26/12 NPDES Related 2012 YD Outfall Sampling YD-12-090512 9/5/12 Water SGS PCB 9/18/12


TABLE 7-2 DATA RECEIVED DURING SEPTEMBER 2012

NPDES RELATED 2012 YD OUTFALL SAMPLING UNKAMET BROOK AREA


Sample ID: Parameter Date Collected:

YD-11-090512 09/05/12

YD-12-090512 09/05/12

PCBs-Unfiltered Aroclor-1248 0.00065 0.00010 Total PCBs 0.00065 0.00010 Inorganics-Unfiltered Zinc 0.0950 0.0260 Conventional Oil & Grease ND(4.8) ND(4.8) Total Suspended Solids 8.60 30.0

Notes: 1. Samples were collected by ARCADIS and submitted to SGS Environmental Services, Inc. for analysis

of PCBs, oil & grease, total suspended solids and zinc. 2. ND - Analyte was not detected. The number in parenthesis is the associated detection limit. 3. With the exception of conventionals, only those constituents detected in one or more samples are

summarized.

Page 1 of 1


ITEM 8

FORMER OXBOW AREAS A&C

(GECD410)

SEPTEMBER 2012


Performed annual inspection of backfilled/restored areas on September 5, 2012.*


None


None


- Submit report on the September 5, 2012 inspection of backfilled/restored areas.*

- Conduct annual Conditional Solution inspections (in November).*


No issues.


None

ITEM 9

LYMAN STREET AREA

(GECD430)

SEPTEMBER 2012


Performed summer 2012 inspection of backfilled/restored areas, certain replanted vegetation, and engineered barrier areas on September 5, 2012.*


None


None


- Submit report on September 5, 2012 inspection of backfilled/restored areas, certain replanted vegetation, and engineered barrier areas.*


- Conduct annual ERE inspection of City-owned property (in November).*

- Mow vegetative portions of the engineered barrier and natural resource restoration/ enhancement (NRRE) areas.*


No issues.


None

ITEM 10

NEWELL STREET AREA I

(GECD440)

SEPTEMBER 2012


Performed summer 2012 inspection of backfilled/restored areas, engineered barriers, and certain paved areas on September 6, 2012.*


None


None


- Submit report on September 6, 2012 inspection of backfilled/restored areas, engineered barriers, and certain paved areas.*

- Conduct annual ERE and Conditional Solution inspections (in November).*


No issues.


None

ITEM 11

NEWELL STREET AREA II

(GECD450)

SEPTEMBER 2012


Performed sampling of water from Newell Street trailer compressor, as indicated in Table 11-1.




Submitted report on August 30, 2012 inspection of backfilled/restored areas, engineered barriers, and re-vegetated areas to EPA (September 28, 2012).*



- Conduct annual ERE inspection of City-owned property (in November)*.

- Mow vegetative portions of the engineered barrier (plus a 10-foot buffer) and natural resource restoration/enhancement (NRRE) areas.*


No issues.


None


NEWELL STREET AREA II GENERAL ELECTRIC COMPANY - PITTSFIELD MASSACHUSETTS

Date Received by Project Name Field Sample ID Sample Date Matrix Laboratory Analyses GE or ARCADIS

Compressor Sampling from Newell Street Trailer C3103 9/6/12 Water SGS PCB 9/20/12



COMPRESSOR SAMPLING FROM NEWELL STREET TRAILER NEWELL STREET AREA II


Sample ID Date

Collected Aroclor-1016 Aroclor-1221 Aroclor-1232 Aroclor-1242 Aroclor-1248 Aroclor-1254 Aroclor-1260 Total PCBs C3103 9/6/2012 ND(0.000067) ND(0.000067) ND(0.000067) ND(0.000067) ND(0.000067) ND(0.000067) ND(0.000067) ND(0.000067)

Notes: 1. Sample was collected by Veolia ES Technical Solutions, L.L.C. and submitted to SGS Environmental Services, Inc. for analysis of PCBs. 2. ND - Analyte was not detected. The number in parentheses is the associated detection limit.


ITEM 12

FORMER OXBOW AREAS J & K

(GECD420)

SEPTEMBER 2012


Performed summer 2012 inspection of backfilled/restored and re-vegetated areas on September 11, 2012.*


None


None


- Submit report on September 11, 2012 inspection of backfilled/restored and re-vegetated areas.*



No issues.


None

ITEM 13

HOUSATONIC RIVER AREA

UPPER ½ MILE REACH

(GECD800)

SEPTEMBER 2012



None


See attached tables. (Note that attached Table 13-3 includes revised total organic carbon [TOC] data for a sediment sample for which results were reported in the August 2012 CD Monthly Report; these results have been revised by the laboratory and replace the results reported for this sample in Table 13-3 of the August 2012 Monthly Report.)


Submitted trip report on supplemental inspection of aquatic habitat enhancement structures and armor stone (September 20, 2012).


- Conduct repair of areas within the channel in Cell J2 where displacement of the armor stone and exposure of the underlying geotextile fabric liner have been observed.

- Submit report on deposited sediment and isolation layer sampling event completed in August 2012 (in November 2012).


GE submitted a report evaluating the total organic carbon (TOC) content and effectiveness of the isolation layer on the river sediments on March 14, 2007. The Final Completion Report for the Upper ½-Mile Reach Removal Action will be submitted following EPA review and approval of that report.


None


HOUSATONIC RIVER - UPPER 1/2 MILE REACH GENERAL ELECTRIC COMPANY - PITTSFIELD MASSACHUSETTS

Depth Date Received by Project Name Field Sample ID Sample Date (Inches) Matrix Laboratory Analyses GE or ARCADIS

Isolation Layer Cap Sampling CAP-MON-6A-2012 8/22/12 2-4 Sediment Pace PCB, TOC 9/4/12 Isolation Layer Cap Sampling CAP-MON-6A-2012 8/22/12 4-6 Sediment Pace PCB, TOC 9/4/12 Isolation Layer Cap Sampling CAP-MON-6A-2012 8/22/12 6-8 Sediment Pace PCB, TOC 9/4/12 Isolation Layer Cap Sampling CAP-MON-6B-2012 8/22/12 0-17 Sediment Pace TOC 9/4/12 Isolation Layer Cap Sampling CAP-MON-7A-2012 8/24/12 2-4 Sediment Pace PCB, TOC 9/4/12 Isolation Layer Cap Sampling CAP-MON-7A-2012 8/24/12 4-6 Sediment Pace PCB, TOC 9/4/12 Isolation Layer Cap Sampling CAP-MON-7A-2012 8/24/12 6-8 Sediment Pace PCB, TOC 9/4/12 Isolation Layer Cap Sampling CAP-MON-7B-2012 8/24/12 0-11 Sediment Pace TOC 9/4/12 Isolation Layer Cap Sampling CAP-MON-8A-2012 8/24/12 2-4 Sediment Pace PCB, TOC 9/4/12 Isolation Layer Cap Sampling CAP-MON-8A-2012 8/24/12 4-6 Sediment Pace PCB, TOC 9/4/12 Isolation Layer Cap Sampling CAP-MON-8A-2012 8/24/12 6-8 Sediment Pace PCB, TOC 9/4/12 Isolation Layer Cap Sampling CAP-MON-8B-2012 8/24/12 0-10 Sediment Pace TOC 9/4/12


TABLE 13-2 SEDIMENT DATA RECEIVED DURING SEPTEMBER 2012

ISOLATION LAYER CAP SAMPLING

HOUSATONIC RIVER - UPPER 1/2 MILE REACH

GENERAL ELECTRIC COMPANY - PITTSFIELD, MASSACHUSETTS (Results are presented in dry weight parts per million, ppm)

Sample ID: Sample Depth(Inches):

Parameter Date Collected:

CAP-MON-6A-2012 2-4

08/22/12

CAP-MON-6A-2012 4-6

08/22/12

CAP-MON-6A-2012 6-8

08/22/12

CAP-MON-6B-2012 0-17

08/22/12

CAP-MON-7A-2012 2-4

08/24/12

CAP-MON-7A-2012 4-6

08/24/12 PCBs None Detected -- -- -- NA1 -- --Conventional TOC - Replicate 1 11000 9700 10000 10000 11000 9100 TOC - Replicate 2 11000 9600 11000 10000 12000 11000 TOC - Replicate 3 13000 9700 13000 11000 8900 9900 TOC - Replicate 4 NA NA NA NA NA NA TOC - Average 11000 9700 11000 10000 11000 9900 TOC - % RSD 11 0.67 11 4.8 16 7.3


TABLE 13-2 SEDIMENT DATA RECEIVED DURING SEPTEMBER 2012





Parameter Date Collected:

CAP-MON-7A-2012 6-8

08/24/12

CAP-MON-7B-2012 0-11

08/24/12

CAP-MON-8A-2012 2-4

08/24/12

CAP-MON-8A-2012 4-6

08/24/12

CAP-MON-8A-2012 6-8

08/24/12

CAP-MON-8B-2012 0-10

08/24/12 PCBs None Detected -- NA1 -- -- -- NA1

Conventional TOC - Replicate 1 10000 10000 9700 13000 5600 12000 TOC - Replicate 2 12000 10000 9700 10000 9800 9600 TOC - Replicate 3 8800 15000 8700 11000 9200 9000 TOC - Replicate 4 NA NA NA NA 9300 NA TOC - Average 10000 12000 9400 11000 8500 10000 TOC - % RSD 16 23 6.3 12 23 14

Notes: 1. Samples were collected by ARCADIS BBL, and submitted to Pace Analytical Services Inc. for analysis of PCBs and total organic carbon (TOC). 2. NA1 - Not Analyzed - Laboratory did not report results for this analyte. 3. NA - Not Analyzed - TOC Replicate 4 is only analyzed and reported by laboratory when the percent relative standard deviation (% RSD) of Replicate 1 thru Replicate 3 is greater than

25%. 4. ND - Analyte was not detected. The number in parentheses is the associated detection limit. 5. Sample depth measured from bottom of geotextile layer up. 6 Only those constituents detected in one or more samples are summarized 6. Only those constituents detected in one or more samples are summarized. 7. -- Indicates that all constituents for the parameter group were not detected.


TABLE 13-3 REVISED SEDIMENT DATA RECEIVED DURING SEPTEMBER 2012




Parameter


Date Collected:

CAP-MON-2B-2012 0-27

08/02/12 Conventional TOC - Replicate 1 760 TOC - Replicate 2 890 TOC - Replicate 3 1200 TOC - Replicate 4 910 TOC - Average 950 TOC - % RSD 21

Note: 1. These results have been revised by the laboratory and supersede those

results reported in Table 13-3 of the August 2012 CD Monthly Report.


ITEM 14


1½ MILE REACH

(GECD820)

SEPTEMBER 2012


- On GE’s behalf, ARCADIS performed one round of water column monitoring at 10 locations along the Housatonic River between Coltsville and Great Barrington on September 27, 2012. Two of these locations are situated in the 1½ Mile Reach: Lyman Street Bridge (Location 4) and Pomeroy Avenue Bridge (Location 6A). A composite grab sample was collected at each location and submitted to Northeast Analytical for analysis of PCBs (total), TSS, POC, and chlorophyll-a, as identified in Table 14-1. The sample collected at Pomeroy Avenue Bridge was also analyzed for volatile suspended solids (VSS). (The other eight locations are discussed under Items 15 and 20 below.)

- GE conducted the maintenance activities identified in its August 1, 2012 report on the 2012 inspection of riverbank soil restoration, aquatic habitat enhancement structures, riprap, articulated concrete block (ACB), and critical ancillary items – namely, removal of large trees from the ACB downstream of Elm Street bridge and repair of fencing along Caledonia Street adjacent to Parcel I8-10-1.*




None


- Continue Housatonic River water column monitoring.

- Submit a report on the 2012 sediment sampling (by October 8, 2012).*

- Submit a report on 2012 macroinvertebrate sampling (by October 25, 2012).*

- Conduct annual ERE and Conditional Solution inspections (in November 2012).*

ITEM 14

(cont’d)


1½ MILE REACH

(GECD820)

SEPTEMBER 2012


No issues.


None


HOUSATONIC RIVER - 1 1/2 MILE REACH GENERAL ELECTRIC COMPANY - PITTSFIELD MASSACHUSETTS


Monthly Water Column Sampling Location-4 9/27/12 Water Pace PCB, TSS, POC, Chlorophyll-A Monthly Water Column Sampling Location-4 8/23/12 Water Pace PCB, TSS, POC, Chlorophyll-A 9/10/12 Monthly Water Column Sampling Location-6A 9/27/12 Water Pace PCB, TSS, VSS, POC, Chlorophyll-A Monthly Water Column Sampling Location-6A 8/23/12 Water Pace PCB, TSS, VSS, POC, Chlorophyll-A 9/10/12


TABLE 14-2 SAMPLE DATA RECEIVED DURING SEPTEMBER 2012

MONTHLY WATER COLUMN SAMPLING HOUSATONIC RIVER - 1 1/2 MILE REACH


Sample ID Location Date

Collected Aroclor-1016, 1232, 1242, -1254, -1260 Aroclor 1221 Aroclor 1248 Total PCBs POC TSS Chlorophyll (a) VSS

LOCATION-4 Lyman Street Bridge 08/23/12 ND(0.0000220) 0.0000730 PB ND(0.0000220) 0.000073 0.71 4.00 0.00480 NA LOCATION-6A Pomeroy Ave. Bridge 08/23/12 ND(0.00000550) 0.0000170 PB 0.00000610 PE 0.0000231 0.72 3.43 0.00730 2.96

Notes: 1 SSamplles were collllected by ARCADIS ARCADIS, andd su bbmiittedd to Pace AAnalytiical Serviices IInc. ffor anallysiis of PCBs ((unfilfiltered) d), total suspendded solidlids (TSS), partiiculate organiic carbon1. d b P l l S f PCB l d (TSS) l b

(POC), chlorophyll (a) and volatile suspended solids (VSS). 2. Sampling methods involved the collection of composite grab samples at each location, representative of three stations (25, 50, and 75 percent of the total river width at each

location) at 50 percent of the total river depth at each station.

3. NA - Not Analyzed. 4. ND - Analyte was not detected. The number in parentheses is the associated detection limit.

Data Qualifiers:

PB - Aroclor 1221 is being used to report an altered PCB pattern exhibited by the sample. Actual Aroclor 1221 is not present in the sample, but is reported to more

accurately quantify PCBs present in a sample that has undergone environmental alteration.

PE - Aroclor 1248 is being used to report an altered PCB pattern exhibited by the sample. Actual Aroclor 1248 is not present in the sample, but is reported to more

accurately quantify PCBs present in a sample that has undergone environmental alteration.


ITEM 15


REST OF THE RIVER

(GECD850)

SEPTEMBER 2012


- GE participated in meetings with EPA, MDEP, and the Connecticut Department of Energy and Environmental Protection (CT DEEP) on September 12-13 and September 20, 2012 to discuss issues relating to remediation approaches for the Rest of River.*

- On GE’s behalf, ARCADIS performed one round of water column monitoring at 10 locations along the Housatonic River between Coltsville and Great Barrington, MA on September 27, 2012. Two locations are situated in the 1½ Mile Reach of the Housatonic River and were discussed in Item 14. One location is at the outlet of Silver Lake and is discussed in Item 20 below. Of the remaining seven locations, two are located upstream of the 1½ Mile Reach: Hubbard Avenue Bridge (Location 1) and Newell Street Bridge (Location 2). The five remaining locations are situated in the Rest of the River: Holmes Road Bridge (Location 7); New Lenox Road Bridge (Location 9); Woods Pond Headwaters (Location 10); Schweitzer Bridge (Location 12); and Division Street Bridge (Location 13). Composite grab samples were collected at each location sampled and submitted to Northeast Analytical for analysis of PCBs (total), TSS, POC, and chlorophyll-a, as identified in Table 15-1.

b. Sampling/Test Results



None


- Continue to participate in meetings with EPA, MDEP, and CT DEEP to discuss issues relating to remediation approaches for the Rest of River.*

- Continue Housatonic River monthly water column monitoring.


- GE’s Revised Corrective Measures Study Report (October 2010) remains under EPA review.*

- GE is continuing to discuss with EPA, MDEP, and CT DEEP issues relating to remediation approaches for the Rest of River.*


None


HOUSATONIC RIVER - REST OF RIVER GENERAL ELECTRIC COMPANY - PITTSFIELD MASSACHUSETTS


Monthly Water Column Sampling HR-D1 (Location-12) 8/23/12 Water Pace PCB, TSS, POC, Chlorophyll-A 9/10/12 Monthly Water Column Sampling HR-D1 (Location-12) 9/27/12 Water Pace PCB, TSS, POC, Chlorophyll-A Monthly Water Column Sampling Location-1 9/27/12 Water Pace PCB, TSS, POC, Chlorophyll-A Monthly Water Column Sampling Location-1 8/23/12 Water Pace PCB, TSS, POC, Chlorophyll-A 9/10/12 Monthly Water Column Sampling Location-10 8/23/12 Water Pace PCB, TSS, POC, Chlorophyll-A 9/10/12 Monthly Water Column Sampling Location-10 9/27/12 Water Pace PCB, TSS, POC, Chlorophyll-A Monthly Water Column Sampling Location-12 9/27/12 Water Pace PCB, TSS, POC, Chlorophyll-A Monthly Water Column Sampling Location-12 8/23/12 Water Pace PCB, TSS, POC, Chlorophyll-A 9/10/12 Monthly Water Column Sampling Location-13 8/23/12 Water Pace PCB, TSS, POC, Chlorophyll-A 9/10/12 Monthly Water Column Sampling Location-13 9/27/12 Water Pace PCB, TSS, POC, Chlorophyll-A Monthly Water Column Sampling Location-2 8/23/12 Water Pace PCB, TSS, POC, Chlorophyll-A 9/10/12 Monthly Water Column Sampling Location-2 9/27/12 Water Pace PCB, TSS, POC, Chlorophyll-A Monthly Water Column Sampling Location-7 8/23/12 Water Pace PCB, TSS, POC, Chlorophyll-A 9/10/12 Monthly Water Column Sampling Location-7 9/27/12 Water Pace PCB, TSS, POC, Chlorophyll-A Monthly Water Column Sampling Location-9 8/23/12 Water Pace PCB, TSS, POC, Chlorophyll-A 9/10/12 Monthly Water Column Sampling Location-9 9/27/12 Water Pace PCB, TSS, POC, Chlorophyll-A

Note: 1. The parent sample location associated with the field duplicate is presented in parentheses.



MONTHLY WATER COLUMN SAMPLING HOUSATONIC RIVER - REST OF RIVER



Collected Aroclor-1016, -1221,

-1232, -1242 Aroclor 1248 Aroclor 1254 Aroclor 1260 Total PCBs POC TSS Chlorophyll (a) LOCATION-1 Hubbard Avenue Bridge 08/23/12 ND(0.0000220) ND(0.0000220) ND(0.0000220) ND(0.0000220) ND(0.0000220) 0.81 2.80 0.00110 LOCATION-2 Newell Street Bridge 08/23/12 ND(0.0000220) ND(0.0000220) ND(0.0000220) ND(0.0000220) ND(0.0000220) 0.84 5.06 0.00430 LOCATION-7 Holmes Road Bridge 08/23/12 ND(0.0000220) ND(0.0000220) ND(0.0000220) ND(0.0000220) ND(0.0000220) 0.27 3.20 0.00400 LOCATION-9 New Lenox Road Bridge 08/23/12 ND(0.0000220) 0.0000230 PE ND(0.0000220) 0.0000360 AG 0.0000590 0.62 3.53 0.00240 LOCATION 10 LOCATION-10 Headwaters of Woods Pond Headwaters of Woods Pond 08/23/1208/23/12 ND(0 0000220) ND(0.0000220) 0 0000460 PE 0.0000460 PE 0 0000360 AF 0.0000360 AF 0 0000540 AG 0.0000540 AG 0 000136 0.000136 0 51 0.51 3 29 3.29 0 00530 0.00530 LOCATION-12 Schweitzer Bridge 08/23/12

08/23/12 ND(0.0000220) [ND(0.0000220)]

0.0000330 PE [0.0000370 PE]

0.0000270 AF [0.0000280 AF]

0.0000460 AG [0.0000450 AG]

0.000106 [0.000110]

0.54 [0.46]

3.81 [4.12]

0.00440 [0.00630]

LOCATION-13 Division Street Bridge 08/23/12 ND(0.0000220) ND(0.0000220) ND(0.0000220) ND(0.0000220) ND(0.0000220) 0.44 2.00 0.00170

Notes: 1. Samples were collected by ARCADIS, and submitted to Pace Analytical Services Inc. for analysis of PCBs (unfiltered), total suspended solids (TSS), particulate organic carbon (POC), chlorophyll (a). 2 Sampling methods involved the collection of composite grab samples at each location Sampling methods involved the collection of composite grab samples at each location, representative of three stations (25 representative of three stations (25, 5500, and 75 percent of the total river width at each location) at 50 percent and 75 percent of the total river width at each location) at 50 percent2.

of the total river depth at each station. 3. ND - Analyte was not detected. The number in parentheses is the associated detection limit.

Data Qualifiers:

AF - Aroclor 1254 is being reported as the best Aroclor match. The sample exhibits an altered PCB pattern. AG - Aroclor 1260 is being reported as the best Aroclor match. The sample exhibits an altered PCB pattern. PEPE - Aroclor 1248 is being used to report an altered PCB pattern exhibited by the sample Aroclor 1248 is being used to report an altered PCB pattern exhibited by the sample. Actual Aroclor 1248 is not present in the sample but is reported to more accurately quantify PCBs present Actual Aroclor 1248 is not present in the sample, but is reported to more accurately quantify PCBs present in a sample that has undergone environmental alteration.


ITEMS 16 & 17

HOUSATONIC RIVER FLOODPLAIN

RESIDENTIAL AND NON-RESIDENTIAL

PROPERTIES ADJACENT TO 1½-MILE REACH

(GECD710 AND GECD720)

SEPTEMBER 2012



None


None


- Submitted report on summer 2012 inspection of backfilled/restored and re-vegetated areas at the Phase 4C Floodplain Properties to EPA (September 11, 2012).

- Submitted report on annual inspection of backfilled/restored areas at the Phase 2 Floodplain Properties to EPA (September 12, 2012).

- Submitted report on annual inspection of backfilled/restored areas at the Phase 3 Floodplain Properties to EPA (September 12, 2012).


- Conduct annual Conditional Solution inspection at Parcel I7-1-5 (in November).

- Conduct annual ERE inspections at Parcel I8-4-7 and I7-1-101 (in November).


No issues.


None

ITEM 18

HOUSATONIC RIVER FLOODPLAIN

CURRENT RESIDENTIAL PROPERTIES

DOWNSTREAM OF CONFLUENCE

(ACTUAL/POTENTIAL LAWNS) (GECD730)

SEPTEMBER 2012



- Conducted reconnaissance of Actual/Potential Lawns at several downstream residential floodplain properties on September 10, 11, and 28, 2012. Properties observed on those days included those in Groups 1 through 5, 7 (only Parcel 2-33), 8, 10 through15, 18, 19 (only Parcel 9-54.02), 20 (only Parcels 9-54.01 and 9-56.02), 21, and 22.

- Continued work in preparation for submitting a Revised Pre-Design Investigation Work Plan in light of EPA’s conditional approval of GE’s February 26, 2002 Pre-Design Investigation Work Plan.


None


None


- Conduct additional reconnaissance of Actual/Potential Lawns at remaining downstream residential floodplain properties. The remaining properties include those in Groups 6, 7 (only Parcel 4-73), 9, 16, 17, 19 (only Parcel 20-4), and 20 (Parcels 9-57 and 9-56.03).

- Continue development of Revised Pre-Design Investigation Work Plan (currently due on November 6, 2012, but may be extended).


No issues.


None

ITEM 20

OTHER AREAS

SILVER LAKE AREA

(GECD600)

SEPTEMBER 2012


- GE and its Remediation Contractor continued on-site remediation work.*

- GE collected and transferred approximately 5,500 gallons of water from on-site remediation activities to the Building 64G Groundwater Treatment Facility (GWTF) for treatment.*

- GE reported a sheen on Silver Lake to EPA, the National Response Center, and MDEP on September 7, 2012.*

- GE executed a lease with the owner of Parcel I9-10-34 allowing GE access to that property for performance of the remediation activities.*

- GE continued efforts to obtain access to Parcel I9-9-9 and expanded access to Parcels I9-9-21, 22, and -23 for performance of remediation activities.*

- On GE’s behalf, ARCADIS performed one round of water column monitoring at the Silver Lake Outfall on September 27, 2012, as noted in Table 20-1, and also obtained a gauge reading (see Item 21.a).

- GE performed water quality monitoring associated with remediation activities, as indicated in Table 20-1.*

- GE performed ambient air monitoring for particulate matter and PCBs in connection with remediation activities, as indicated in Table 20-1.*

- On September 12, 2012 GE verbally notified EPA of an exceedance of the ambient air PCB notification and action levels at air monitoring station SL-5 (and the co-located monitoring station SL-5CO) during the 24-hour sampling period on September 5-6, 2012.*

- On September 17, 2012 GE verbally notified EPA of an exceedance of the ambient air PCB notification level at air monitoring station SL-5 (and the co-located monitoring station SL-5CO) during the 24-hour sampling period on September 13-14, 2012.*

ITEM 20

(cont’d)

OTHER AREAS SILVER LAKE AREA

(GECD600)

SEPTEMBER 2012

a. Activities Undertaken/Completed (cont’d)

- In response to the above-mentioned PCB air exceedances,, based on discussions with EPA, GE conducted additional air monitoring and implemented additional engineering controls (i.e., reconfiguration of the sorbent booms on the eastern side of the Lake to bring them closer to the shore, increasing the frequency at which the sorbent booms and pads are replaced, and use of an additional water truck to enhance dust control efforts) to minimize airborne PCB levels resulting from the Silver Lake cleanup.*




- GE submitted a letter to EPA disagreeing with EPA’s August 29, 2012 letter stating that the Agency could not conclude that GE had used best efforts to obtain access to Parcel I9-9-9 for performance of remediation activities (September 4, 2012).*

- Periodic construction-related submittals (e.g., survey control, material characterization results) were provided to the EPA project team for review and approval.*

- GE submitted written follow-up letters to EPA regarding the above-mentioned exceedances of the ambient air PCB action and/or notification levels (September 14 and 19, 2012).*


- Continue on-site remediation work.*

- Continue efforts to obtain access to Parcel I9-9-9 and expanded access to Parcels I9-9-21, -22, and -23 for performance of remediation activities.*

- Continue discussions with EPA regarding the use of best efforts to obtain access to Parcel I9-99.*

- Continue well decommissioning (see Item 21.e below).*

ITEM 20

(cont’d)

OTHER AREAS SILVER LAKE AREA

(GECD600)

SEPTEMBER 2012


- Continue additional air monitoring and implementation of the above-mentioned additional engineering controls to minimize airborne PCB levels resulting from the Silver Lake cleanup.*

- Submit a revised evaluation of certain recreational bank areas in light of survey results relating to the extent of polygons adjacent to the Lake and polygons adjacent to Silver Lake Boulevard.*


The necessary access (or expanded access) permission for remediation has still not been obtained for Parcel I9-9-9 and Parcels I9-9-21, -22, and -23.*


GE’s September 14 and 19, 2012 letter regarding the above-mentioned exceedances of the ambient air PCB action and/or notification levels proposed certain follow-up activities, including additional air monitoring and additional engineering controls. GE received a response from EPA to GE’s September 19, 2012 letter on September 26, 2012, directing GE to conduct weekly PCB air monitoring for the following four weeks.


SILVER LAKE AREA

GENERAL ELECTRIC COMPANY - PITTSFIELD MASSACHUSETTS


Granular Cap Material Sampling NP-GCM-1 8/31/12 Soil Pace Metals, Mercury 9/12/12 Granular Cap Material Sampling NP-GCM-1 8/31/12 Soil Pace PCB 9/5/12 Granular Cap Material Sampling NP-GCM-1 8/31/12 Soil Pace TOC 9/4/12 Granular Cap Material Sampling NP-GCM-1 8/31/12 Soil SGS VOC, SVOC 9/17/12 Granular Cap Material Sampling NP-GCM-2 8/31/12 Soil Pace Metals, Mercury 9/12/12 Granular Cap Material Sampling NP-GCM-2 8/31/12 Soil Pace PCB 9/5/12 Granular Cap Material Sampling NP-GCM-2 8/31/12 Soil Pace TOC 9/4/12 Granular Cap Material Sampling NP-GCM-2 8/31/12 Soil SGS VOC, SVOC 9/17/12 Monthly Water Column Sampling Location-4A 9/27/12 Water Pace PCB, TSS Monthly Water Column Sampling Location-4A 8/23/12 Water Pace PCB, TSS 9/10/12 Weekly Water Quality Monitoring MON-1-082312 8/23/12 Water Pace PCB, TSS 9/4/12 Weekly Water Quality Monitoring MON-1-082912 8/29/12 Water Pace PCB, TSS 9/7/12 Weekly Water Quality Monitoring MON-1-090712 9/7/12 Water Pace PCB, TSS 9/12/12 Weekly Water Quality Monitoring MON-1-091312 9/13/12 Water Pace PCB, TSS 9/25/12 Weekly Water Quality Monitoring MON-1-091912 9/19/12 Water Pace PCB, TSS 9/27/12 Weekly Water Quality Monitoring MON-1-092712 9/27/12 Water Pace PCB, TSS Weekly Water Quality Monitoring MON-2-082312 8/23/12 Water Pace PCB, TSS 9/4/12 Weekly Water Quality Monitoring MON-2-082912 8/29/12 Water Pace PCB, TSS 9/7/12 Weekly Water Quality Monitoring MON-2-090712 9/7/12 Water Pace PCB, TSS 9/12/12 Weekly Water Quality Monitoring MON-2-091312 9/13/12 Water Pace PCB, TSS 9/25/12 Weekly Water Quality Monitoring MON-2-091912 9/19/12 Water Pace PCB, TSS 9/27/12 Weekly Water Quality Monitoring MON-2-092712 9/27/12 Water Pace PCB, TSS Weekly Water Quality Monitoring SL-DUP-091912 (MON-2-091912) 9/19/12 Water Pace PCB, TSS 9/27/12

Ambient Air Particulate Matter Sampling SL-4 9/4/2012 Air Berkshire Environmental Particulate Matter 9/10/2012 Ambient Air Particulate Matter Sampling SL-5 9/4/2012 Air Berkshire Environmental Particulate Matter 9/10/2012 Ambient Air Particulate Matter Sampling SL-14 9/4/2012 Air Berkshire Environmental Particulate Matter 9/10/2012 Ambient Air Particulate Matter Sampling SL-15 9/4/2012 Air Berkshire Environmental Particulate Matter 9/10/2012 Ambient Air Particulate Matter Sampling SL-17 9/4/2012 Air Berkshire Environmental Particulate Matter 9/10/2012 Ambient Air Particulate Matter Sampling Background Location 9/4/2012 Air Berkshire Environmental Particulate Matter 9/10/2012 Ambient Air Particulate Matter Sampling SL-4 9/5/2012 Air Berkshire Environmental Particulate Matter 9/10/2012 Ambient Air Particulate Matter Sampling SL-5 9/5/2012 Air Berkshire Environmental Particulate Matter 9/10/2012 Ambient Air Particulate Matter Sampling SL-14 9/5/2012 Air Berkshire Environmental Particulate Matter 9/10/2012 Ambient Air Particulate Matter Sampling SL-15 9/5/2012 Air Berkshire Environmental Particulate Matter 9/10/2012 Ambient Air Particulate Matter Sampling SL-17 9/5/2012 Air Berkshire Environmental Particulate Matter 9/10/2012 Ambient Air Particulate Matter Sampling Background Location 9/5/2012 Air Berkshire Environmental Particulate Matter 9/10/2012 Ambient Air Particulate Matter Sampling SL-1 9/6/2012 Air Berkshire Environmental Particulate Matter 9/10/2012 Ambient Air Particulate Matter Sampling SL-4 9/6/2012 Air Berkshire Environmental Particulate Matter 9/10/2012 Ambient Air Particulate Matter Sampling SL-5 9/6/2012 Air Berkshire Environmental Particulate Matter 9/10/2012 Ambient Air Particulate Matter Sampling SL-14 9/6/2012 Air Berkshire Environmental Particulate Matter 9/10/2012



SILVER LAKE AREA



Ambient Air Particulate Matter Sampling SL-15 9/6/2012 Air Berkshire Environmental Particulate Matter 9/10/2012 Ambient Air Particulate Matter Sampling SL-17 9/6/2012 Air Berkshire Environmental Particulate Matter 9/10/2012 Ambient Air Particulate Matter Sampling Background Location 9/6/2012 Air Berkshire Environmental Particulate Matter 9/10/2012 Ambient Air Particulate Matter Sampling SL-1 9/7/2012 Air Berkshire Environmental Particulate Matter 9/10/2012 Ambient Air Particulate Matter Sampling SL-4 9/7/2012 Air Berkshire Environmental Particulate Matter 9/10/2012 Ambient Air Particulate Matter Sampling SL-5 9/7/2012 Air Berkshire Environmental Particulate Matter 9/10/2012 Ambient Air Particulate Matter Sampling SL-6 9/7/2012 Air Berkshire Environmental Particulate Matter 9/10/2012 Ambient Air Particulate Matter Sampling SL-14 9/7/2012 Air Berkshire Environmental Particulate Matter 9/10/2012 Ambient Air Particulate Matter Sampling SL-15 9/7/2012 Air Berkshire Environmental Particulate Matter 9/10/2012 Ambient Air Particulate Matter Sampling SL-17 9/7/2012 Air Berkshire Environmental Particulate Matter 9/10/2012 Ambient Air Particulate Matter Sampling Background Location 9/7/2012 Air Berkshire Environmental Particulate Matter 9/10/2012 Ambient Air Particulate Matter Sampling SL-1 9/10/2012 Air Berkshire Environmental Particulate Matter 9/17/2012 Ambient Air Particulate Matter Sampling SL-4 9/10/2012 Air Berkshire Environmental Particulate Matter 9/17/2012 Ambient Air Particulate Matter Sampling SL-5 9/10/2012 Air Berkshire Environmental Particulate Matter 9/17/2012 Ambient Air Particulate Matter Sampling SL-6 9/10/2012 Air Berkshire Environmental Particulate Matter 9/17/2012 Ambient Air Particulate Matter Sampling SL-14 9/10/2012 Air Berkshire Environmental Particulate Matter 9/17/2012 Ambient Air Particulate Matter Sampling SL-15 9/10/2012 Air Berkshire Environmental Particulate Matter 9/17/2012 Ambient Air Particulate Matter Sampling SL-17 9/10/2012 Air Berkshire Environmental Particulate Matter 9/17/2012 Ambient Air Particulate Matter Sampling Background Location 9/10/2012 Air Berkshire Environmental Particulate Matter 9/17/2012 Ambient Air Particulate Matter Sampling SL-1 9/11/2012 Air Berkshire Environmental Particulate Matter 9/17/2012 Ambient Air Particulate Matter Sampling SL-5 9/11/2012 Air Berkshire Environmental Particulate Matter 9/17/2012 Ambient Air Particulate Matter Sampling SL-14 9/11/2012 Air Berkshire Environmental Particulate Matter 9/17/2012 Ambient Air Particulate Matter Sampling SL-15 9/11/2012 Air Berkshire Environmental Particulate Matter 9/17/2012 Ambient Air Particulate Matter Sampling SL-17 9/11/2012 Air Berkshire Environmental Particulate Matter 9/17/2012 Ambient Air Particulate Matter Sampling Background Location 9/11/2012 Air Berkshire Environmental Particulate Matter 9/17/2012 Ambient Air Particulate Matter Sampling SL-1 9/12/2012 Air Berkshire Environmental Particulate Matter 9/17/2012 Ambient Air Particulate Matter Sampling SL-5 9/12/2012 Air Berkshire Environmental Particulate Matter 9/17/2012 Ambient Air Particulate Matter Sampling SL-14 9/12/2012 Air Berkshire Environmental Particulate Matter 9/17/2012 Ambient Air Particulate Matter Sampling SL-15 9/12/2012 Air Berkshire Environmental Particulate Matter 9/17/2012 Ambient Air Particulate Matter Sampling SL-17 9/12/2012 Air Berkshire Environmental Particulate Matter 9/17/2012 Ambient Air Particulate Matter Sampling SL-18 9/12/2012 Air Berkshire Environmental Particulate Matter 9/17/2012 Ambient Air Particulate Matter Sampling Background Location 9/12/2012 Air Berkshire Environmental Particulate Matter 9/17/2012 Ambient Air Particulate Matter Sampling SL-1 9/13/2012 Air Berkshire Environmental Particulate Matter 9/17/2012 Ambient Air Particulate Matter Sampling SL-5 9/13/2012 Air Berkshire Environmental Particulate Matter 9/17/2012 Ambient Air Particulate Matter Sampling SL-15 9/13/2012 Air Berkshire Environmental Particulate Matter 9/17/2012 Ambient Air Particulate Matter Sampling SL-17 9/13/2012 Air Berkshire Environmental Particulate Matter 9/17/2012 Ambient Air Particulate Matter Sampling SL-18 9/13/2012 Air Berkshire Environmental Particulate Matter 9/17/2012 Ambient Air Particulate Matter Sampling Background Location 9/13/2012 Air Berkshire Environmental Particulate Matter 9/17/2012 Ambient Air Particulate Matter Sampling SL-1 9/14/2012 Air Berkshire Environmental Particulate Matter 9/17/2012 Ambient Air Particulate Matter Sampling SL-5 9/14/2012 Air Berkshire Environmental Particulate Matter 9/17/2012 Ambient Air Particulate Matter Sampling SL-15 9/14/2012 Air Berkshire Environmental Particulate Matter 9/17/2012 Ambient Air Particulate Matter Sampling SL-17 9/14/2012 Air Berkshire Environmental Particulate Matter 9/17/2012 Ambient Air Particulate Matter Sampling SL-18 9/14/2012 Air Berkshire Environmental Particulate Matter 9/17/2012



SILVER LAKE AREA



Ambient Air Particulate Matter Sampling Background Location 9/14/2012 Air Berkshire Environmental Particulate Matter 9/17/2012 Ambient Air Particulate Matter Sampling SL-1 9/17/2012 Air Berkshire Environmental Particulate Matter 9/25/2012 Ambient Air Particulate Matter Sampling SL-5 9/17/2012 Air Berkshire Environmental Particulate Matter 9/25/2012 Ambient Air Particulate Matter Sampling SL-7 9/17/2012 Air Berkshire Environmental Particulate Matter 9/25/2012 Ambient Air Particulate Matter Sampling SL-15 9/17/2012 Air Berkshire Environmental Particulate Matter 9/25/2012 Ambient Air Particulate Matter Sampling SL-17 9/17/2012 Air Berkshire Environmental Particulate Matter 9/25/2012 Ambient Air Particulate Matter Sampling Background Location 9/17/2012 Air Berkshire Environmental Particulate Matter 9/25/2012 Ambient Air Particulate Matter Sampling SL-1 9/18/2012 Air Berkshire Environmental Particulate Matter 9/25/2012 Ambient Air Particulate Matter Sampling SL-5 9/18/2012 Air Berkshire Environmental Particulate Matter 9/25/2012 Ambient Air Particulate Matter Sampling SL-7 9/18/2012 Air Berkshire Environmental Particulate Matter 9/25/2012 Ambient Air Particulate Matter Sampling SL-15 9/18/2012 Air Berkshire Environmental Particulate Matter 9/25/2012 Ambient Air Particulate Matter Sampling SL-17 9/18/2012 Air Berkshire Environmental Particulate Matter 9/25/2012 Ambient Air Particulate Matter Sampling Background Location 9/18/2012 Air Berkshire Environmental Particulate Matter 9/25/2012 Ambient Air Particulate Matter Sampling SL-1 9/19/2012 Air Berkshire Environmental Particulate Matter 9/25/2012 Ambient Air Particulate Matter Sampling SL-5 9/19/2012 Air Berkshire Environmental Particulate Matter 9/25/2012 Ambient Air Particulate Matter Sampling SL-7 9/19/2012 Air Berkshire Environmental Particulate Matter 9/25/2012 Ambient Air Particulate Matter Sampling SL-15 9/19/2012 Air Berkshire Environmental Particulate Matter 9/25/2012 Ambient Air Particulate Matter Sampling SL-17 9/19/2012 Air Berkshire Environmental Particulate Matter 9/25/2012 Ambient Air Particulate Matter Sampling Background Location 9/19/2012 Air Berkshire Environmental Particulate Matter 9/25/2012 Ambient Air Particulate Matter Sampling SL-1 9/20/2012 Air Berkshire Environmental Particulate Matter 9/25/2012 Ambient Air Particulate Matter Sampling SL-5 9/20/2012 Air Berkshire Environmental Particulate Matter 9/25/2012 Ambient Air Particulate Matter Sampling SL-7 9/20/2012 Air Berkshire Environmental Particulate Matter 9/25/2012 Ambient Air Particulate Matter Sampling SL-15 9/20/2012 Air Berkshire Environmental Particulate Matter 9/25/2012 Ambient Air Particulate Matter Sampling SL-17 9/20/2012 Air Berkshire Environmental Particulate Matter 9/25/2012 Ambient Air Particulate Matter Sampling Background Location 9/20/2012 Air Berkshire Environmental Particulate Matter 9/25/2012 Ambient Air Particulate Matter Sampling SL-1 9/21/2012 Air Berkshire Environmental Particulate Matter 9/25/2012 Ambient Air Particulate Matter Sampling SL-5 9/21/2012 Air Berkshire Environmental Particulate Matter 9/25/2012 Ambient Air Particulate Matter Sampling SL-7 9/21/2012 Air Berkshire Environmental Particulate Matter 9/25/2012 Ambient Air Particulate Matter Sampling SL-15 9/21/2012 Air Berkshire Environmental Particulate Matter 9/25/2012 Ambient Air Particulate Matter Sampling SL-17 9/21/2012 Air Berkshire Environmental Particulate Matter 9/25/2012 Ambient Air Particulate Matter Sampling Background Location 9/21/2012 Air Berkshire Environmental Particulate Matter 9/25/2012 Ambient Air Particulate Matter Sampling SL-1 9/24/2012 Air Berkshire Environmental Particulate Matter 10/1/2012 Ambient Air Particulate Matter Sampling SL-5 9/24/2012 Air Berkshire Environmental Particulate Matter 10/1/2012 Ambient Air Particulate Matter Sampling SL-15 9/24/2012 Air Berkshire Environmental Particulate Matter 10/1/2012



SILVER LAKE AREA



Ambient Air Particulate Matter Sampling SL-17 9/24/2012 Air Berkshire Environmental Particulate Matter 10/1/2012 Ambient Air Particulate Matter Sampling Background Location 9/24/2012 Air Berkshire Environmental Particulate Matter 10/1/2012 Ambient Air Particulate Matter Sampling SL-1 9/25/2012 Air Berkshire Environmental Particulate Matter 10/1/2012 Ambient Air Particulate Matter Sampling SL-5 9/25/2012 Air Berkshire Environmental Particulate Matter 10/1/2012 Ambient Air Particulate Matter Sampling SL-15 9/25/2012 Air Berkshire Environmental Particulate Matter 10/1/2012 Ambient Air Particulate Matter Sampling SL-17 9/25/2012 Air Berkshire Environmental Particulate Matter 10/1/2012 Ambient Air Particulate Matter Sampling Background Location 9/25/2012 Air Berkshire Environmental Particulate Matter 10/1/2012 Ambient Air Particulate Matter Sampling SL-1 9/26/2012 Air Berkshire Environmental Particulate Matter 10/1/2012 Ambient Air Particulate Matter Sampling SL-5 9/26/2012 Air Berkshire Environmental Particulate Matter 10/1/2012 Ambient Air Particulate Matter Sampling SL-15 9/26/2012 Air Berkshire Environmental Particulate Matter 10/1/2012 Ambient Air Particulate Matter Sampling SL-17 9/26/2012 Air Berkshire Environmental Particulate Matter 10/1/2012 Ambient Air Particulate Matter Sampling Background Location 9/26/2012 Air Berkshire Environmental Particulate Matter 10/1/2012 Ambient Air Particulate Matter Sampling SL-1 9/27/2012 Air Berkshire Environmental Particulate Matter 10/1/2012 Ambient Air Particulate Matter Sampling SL-5 9/27/2012 Air Berkshire Environmental Particulate Matter 10/1/2012 Ambient Air Particulate Matter Sampling SL-15 9/27/2012 Air Berkshire Environmental Particulate Matter 10/1/2012 Ambient Air Particulate Matter Sampling SL-17 9/27/2012 Air Berkshire Environmental Particulate Matter 10/1/2012 Ambient Air Particulate Matter Sampling Background Location 9/27/2012 Air Berkshire Environmental Particulate Matter 10/1/2012 Ambient Air Particulate Matter Sampling SL-1 9/28/2012 Air Berkshire Environmental Particulate Matter 10/1/2012 Ambient Air Particulate Matter Sampling SL-5 9/28/2012 Air Berkshire Environmental Particulate Matter 10/1/2012 Ambient Air Particulate Matter Sampling SL-15 9/28/2012 Air Berkshire Environmental Particulate Matter 10/1/2012 Ambient Air Particulate Matter Sampling SL-17 9/28/2012 Air Berkshire Environmental Particulate Matter 10/1/2012 Ambient Air Particulate Matter Sampling Background Location 9/28/2012 Air Berkshire Environmental Particulate Matter 10/1/2012

PCB Ambient Air Sampling SL-5 09/05/12-09/06/12 Air PACE PCB 10/1/2012 PCB Ambient Air Sampling SL-5CO (colocated) 09/05/12-09/06/12 Air PACE PCB 10/1/2012 PCB Ambient Air Sampling SL-7 09/05/12-09/06/12 Air PACE PCB 10/1/2012 PCB Ambient Air Sampling SL-15 09/05/12-09/06/12 Air PACE PCB 10/1/2012 PCB Ambient Air Sampling SL-17 09/05/12-09/06/12 Air PACE PCB 10/1/2012 PCB Ambient Air Sampling Background BK-5 09/05/12-09/06/12 Air PACE PCB 10/1/2012 PCB Ambient Air Sampling SL-5 09/13/12-09/14/12 Air PACE PCB 10/1/2012 PCB Ambient Air Sampling SL-5CO (colocated) 09/13/12-09/14/12 Air PACE PCB 10/1/2012 PCB Ambient Air Sampling SL-7 09/13/12-09/14/12 Air PACE PCB 10/1/2012 PCB Ambient Air Sampling SL-15 09/13/12-09/14/12 Air PACE PCB 10/1/2012 PCB Ambient Air Sampling SL-17 09/13/12-09/14/12 Air PACE PCB 10/1/2012 PCB Ambient Air Sampling Background BK-5 09/13/12-09/14/12 Air PACE PCB 10/1/2012 PCB Ambient Air Sampling SL-5 09/17/12-09/18/12 Air PACE PCB 10/1/2012 PCB Ambient Air Sampling SL-5CO (colocated) 09/17/12-09/18/12 Air PACE PCB 10/1/2012



SILVER LAKE AREA



PCB Ambient Air Sampling SL-7 09/17/12-09/18/12 Air PACE PCB 10/1/2012 PCB Ambient Air Sampling SL-15 09/17/12-09/18/12 Air PACE PCB 10/1/2012 PCB Ambient Air Sampling SL-17 09/17/12-09/18/12 Air PACE PCB 10/1/2012 PCB Ambient Air Sampling Background BK-5 09/17/12-09/18/12 Air PACE PCB 10/1/2012 PCB Ambient Air Sampling SL-5 09/18/12-09/19/12 Air PACE PCB 10/1/2012 PCB Ambient Air Sampling SL-5CO (colocated) 09/18/12-09/19/12 Air PACE PCB 10/1/2012 PCB Ambient Air Sampling SL-7 09/18/12-09/19/12 Air PACE PCB 10/1/2012 PCB Ambient Air Sampling SL-15 09/18/12-09/19/12 Air PACE PCB 10/1/2012 PCB Ambient Air Sampling SL-17 09/18/12-09/19/12 Air PACE PCB 10/1/2012 PCB Ambient Air Sampling Background BK-5 09/18/12-09/19/12 Air PACE PCB 10/1/2012 PCB Ambient Air Sampling SL-5 09/19/12-09/20/12 Air PACE PCB 10/1/2012 PCB Ambient Air Sampling SL-5CO (colocated) 09/19/12-09/20/12 Air PACE PCB 10/1/2012 PCB Ambient Air Sampling SL-7 09/19/12-09/20/12 Air PACE PCB 10/1/2012 PCB Ambient Air Sampling SL-15 09/19/12-09/20/12 Air PACE PCB 10/1/2012 PCB Ambient Air Sampling SL-17 09/19/12-09/20/12 Air PACE PCB 10/1/2012 PCB Ambient Air Sampling Background BK-5 09/19/12-09/20/12 Air PACE PCB 10/1/2012 PCB Ambient Air Sampling SL-1 09/27/12-09/28/12 Air PACE PCB 10/3/2012 PCB Ambient Air Sampling SL-15 09/27/12-09/28/12 Air PACE PCB 10/3/2012 PCB Ambient Air Sampling SL-17 09/27/12-09/28/12 Air PACE PCB 10/3/2012 PCB Ambient Air Sampling SL-17CO (colocated) 09/27/12-09/28/12 Air PACE PCB 10/3/2012 PCB Ambient Air Sampling Background BK-5 09/27/12-09/28/12 Air PACE PCB 10/3/2012



MONTHLY WATER COLUMN SAMPLING SILVER LAKE AREA



Collected Aroclor-1016, -1232,

-1248, -1254 Aroclor 1221 Aroclor 1242 Aroclor 1260 Total PCBs TSS LOCATION-4A Silver Lake Outlet 8/23/2012 ND(0.0000440) 0.000480 PB 0.000120 PD ND(0.0000440) 0.000600 ND(2.38)

Notes: 1. Sample was collected by ARCADIS, and submitted to Pace Analytical Services Inc. for analysis of unfiltered PCBs and total suspended solids (TSS). 2. l ll l t t d th 2 SSampliling meththodds iinvolved th d the collectition off siingle grab 50 b 50 percentt o f th f the tottall riiver width idth, and 50 d 50 percentt o f th f the tottall riiver depth. 3. ND - Analyte was not detected. The number in parentheses is the associated detection limit.

Data Qualifiers:

PB - Aroclor 1221 is being used to report an altered PCB pattern exhibited by the sample. Actual Aroclor 1221 is not present in the sample, but is reported to more accurately quantify PCBs present in a sample that has undergone environmental alteration. PD - Aroclor 1242 is being used to report an altered PCB pattern exhibited by the sample. Actual Aroclor 1242 is not present in the sample, but is reported to more

t l tif PCB t i l th t h d i t l lt ti accurately quantify PCBs present in a sample that has undergone environmental alteration.


TABLE 20-3 SAMPL

Date post:	15-Jul-2020
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