Mr. John Ziegler Mr. Dean Tagliaferro · Chris Ferry, ASRC Primus (cover letter and CD-ROM of report) Rod McLaren, GE Matt Calacone, GE James Nuss, ARCADIS Shannon Reilly, GD-AIS

Transmitted Via Overnight Delivery

June 10,2014

Mr. John Ziegler Bureau of Waste Site Cleanup Department of Environmental Protection 436 Dwight Street Springfield, MA 01103

Re: GE-Pittsfield/Housatonic River Site Unkamet Brook Area (GECD170)

GE Corporate

159 Plastics Avenue Pittsfield, MA 01201

USA

Mr. Dean Tagliaferro U.S. Environmental Protection Agency EPA New England 10 Lyman Street, Suite 2 Pittsfield, MA 01201

Pre-Excavation Notification- Storm Sewer Repairs

Dear Mr. Ziegler and Mr. Tagliaferro:

In accordance with the General Electric Company's (GE's) Protocols for the Management of Excavation Activities (November 1996), this letter provides pre-excavation notice and a proposed soil management plan for an upcoming project involving ten small excavations at GE's Pittsfield, Massachusetts facility (Site). The excavations will be conducted by General Dynamics, AIS within the Unkamet Brook AreaWest Removal Action Area (RAA), and will involve the repair of several storm sewer structures (catch basins) located in the vicinity of Buildings OP-1 and OP-2. In anticipation of the work, GE has reviewed the available soil data to determine potential disposition options for the excavated materials. This letter summarizes the anticipated excavations, summarizes GE's review of the available data set, and proposed approach for handling and disposition of excavated soils.

A. DESCRIPTION OF EXCAVATIONS RELATED TO FACILITY UPGRADES

The ten excavations will be conducted in the locations shown on Figure 1. The dimensions of each excavation will be approximately 4 feet long by 4 feet wide and 2 feet deep, for an estimated, cumulative soil volume of 12 cubic yards for all ten excavations.

B. REVIEW OF AVAILABLE SOIL DATA SET

The available soil data from prior sample locations in the vicinity of the planned excavations includes polychlorinated biphenyls (PCBs) and other constituents listed in Appendix IX of 40 CFR Part 264, plus three additional constituents (benzidine, 2-chloroethyl vinyl ether, and 1 ,2-diphenylhydrazine) (Appendix IX+3). The PCB and Appendix IX+3 analytical data used in the soil data reviews provided below are summarized in Tables 1 and 2, respectively. Figure 1 presents the proposed excavations 1 through 10, and the corresponding soil sample locations.

Mr. Ziegler and Mr. Tagliaferro June 10, 2014

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• Near Excavation 1, soils were sampled at various depths up to 6 feet from four locations (DRA-SB-18, H78B-19, RAA10-W-J2, and RAA10-W-J3) and analyzed for PCBs; and sampled at the 0- to 1-foot depth interval from one location (RAA10-W-J2) and analyzed for Appendix IX+3 constituents.

• Near Excavation 2, soils were sampled at the 0- to 1-foot and 1- to 6-foot depth intervals from four locations (RAA9-H21, RAA9-H22, RAA10-W-P8, and RAA10-W-P9) and analyzed for PCBs; and sampled at various depths up to 6 feet from three locations (RAA9-H22, RAA10-W-P8, and RAA10-W-P9) and analyzed for Appendix IX+3 constituents.

• Near Excavation 3, soils were sampled at the 0- to 1-foot and 1- to 6-foot depth intervals from three locations (RAA10-W-M11, RAA10-W-N12, and RAA10-W-P11) and analyzed for PCBs; and sampled at 0- to 1-foot depth interval from one location (RAA10-W-N13) and analyzed for Appendix IX+ 3 constituents.

• Near Excavation 4, soils were sampled at the 0- to 1-foot and 1- to 6-foot depth intervals from two locations (RAA10-W-I17 and RAA10-W-J17) and analyzed for PCBs; and sampled at the 0- t 1-foot and 1- to 6-foot depth intervals from one location (RAA10-W-H15) and analyzed Appendix IX+3 constituents.

• Near Excavation 5, soils were sampled at the 0- to 1-foot and 1- to 6-foot depth intervals from two locations (RAA10-W-K17 and RAA10-W-L18) and analyzed for PCBs; and sampled at the 1- to 6-foot depth interval from one location (RAA10-W-K17) and analyzed for Appendix IX+3 constituents.

• Near Excavation 6, soils were sampled at the 0- to 1-foot and 1- to 6-foot depth intervals from one location (RAA10-W-K18) and analyzed for PCBs; and sampled at the 0- to 1-foot depth interval from two locations (RAA10-W-K18) and analyzed for Appendix IX+3 constituents.

• Near Excavations 7 and 8, soils were sampled at the 0- to 1-foot and 1- to 6-foot depth intervals from four locations (RAA10-W-J20, RAA10-W-K19, RAA10-W-K21, and RAA10-W-L20) and analyzed for PCBs; and sampled at various depths up to 6 feet from two locations (RAA10-W-Kl9) and analyzed for Appendix IX+3 constituents.

• Near Excavation 9, soils were sampled at the 0- to 1-foot and 1- to 6-foot depth intervals from one location (RAA10-W-J21) and analyzed for PCBs; and sampled at 0- to 1-foot depth interval from one location (RAA10-W-J21) and analyzed for Appendix IX+3 constituents.

• Near Excavation 10, soils were sampled at various depths up to 6 feet from three locations (RAA10-W-I21, RAA10-W-I22, and UB-SS-4) and analyzed for PCBs; and sampled at various depths up to 6 feet from three locations (RAA10-W-I21, RAA10-W-I22, and UB-SS-4) and analyzed for Appendix IX+ 3 constituents.

Review of the available soil data sets for Excavations 1 through 10 identify PCB concentrations ranging from non-detect to 14 parts per million (ppm), which are all below any applicable PCB Performance Standard established in the Statement of Work for Removal Actions Outside the River.

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Mr. Ziegler and Mr. Tagliaferro June 10,2014

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In addition, the discrete Appendix IX+ 3 sample results are less than their corresponding Method 1 S-1 Soil Standards (GW-2/GW-3) established in the Massachusetts Contingency Plan, with the exception of the following:

• Arsenic in soil sample location RAA10-W-J2 in the 0- to 1-foot depth interval (Excavation 1);

• Chromium in soil sample location UB-SS-4 in the 0- to 0.5-foot depth interval (Excavation 10); and

• Nickel in soil sample locations RAA10-W-J2 (Excavation 1) and RAA10-W-P8 (Excavation 2) in the 0- to 1-foot depth interval and in soil sample locations RAA10-W-I22 and UB-SS-4 (Excavation 10) in the 1- to 6-foot and 0- to 0.5-foot depth intervals, respectively.

However, as identified in GE's Revised Final Removal Design/Removal Action Work Plan for Unkamet Brook Area-West (April2014), the Removal Design/Removal Action evaluations of Appendix IX+3 data for Parcel K11-7-2 within the Unkamet Brook Area-West RAA indicated that the average concentrations of arsenic are less than the applicable Method 1 soil standard for each applicable depth interval, and that no remediation for Appendix IX+3 constituents is necessary to achieve the non-PCB Performance Standards at this area. Given that removed soil materials will be returned to their same excavation locations, current conditions will be maintained. Additionally, future Grant of Environmental Restrictions and Easements will be executed.

C. PROPOSED HANDLING AND DISPOSITION OF EXCAVATED SOIL

Based on the above data review, soils removed from the ground during the above-referenced storm sewer repairs at Excavations 1 through 10 are considered suitable for re-use as backfill in the same general locations and depths from which the soils were removed.

Any materials (e.g., asphalt, concrete, surplus soils, and personal protective equipment), excavated, collected, placed, used and/or stored within the Unkamet Brook Area-West RAA or at GE's Building 78 hazardous waste storage facility, in connection with the above-referenced excavations, will be properly disposed of, or shipped or removed from the Site for proper disposal, within 90 days from the date of such initial storage or within such longer time as is permitted under any applicable state or federal law or regulation. All excavated, collected, used and/or stored materials will be placed on and covered by polyethylene sheeting while temporarily stored on-site prior to re-use or disposal. In addition, for the soils (if any) that are removed and cannot be re-used as described above, GE will conduct waste characterization, management, and off-site disposal activities consistent with the methods that it has used for the response actions conducted under the Consent Decree.

Should there be any questions or comments, or if additional information is needed, please contact me at 413-484-5909.

Sincerely,

Richard W. Gates Remediation Project Manager

Enclosure

G:\GE\GE_Pittsfield_ CD_ Unkamet_ Brook _Area\Correspondence\2014\ExcaRqst\1941411324Ltr.docx

cc: Richard Fisher, EPA Chris Ferry, ASRC Primus (cover letter and CD-ROM of report) Rod McLaren, GE Matt Calacone, GE James Nuss, ARCADIS Shannon Reilly, GD-AIS GE Environmental Library

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Mr. Ziegler and Mr. Tagliaferro June 10, 2014

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Tables

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

0-1 6/2/2000 ND(0.043) ND(0.043) ND(0.043) ND(0.043) ND(0.043) ND(0.043) 0.088 0.0881-3 6/2/2000 ND(0.037) ND(0.037) ND(0.037) ND(0.037) ND(0.037) ND(0.037) ND(0.037) ND(0.037)

0-0.5 7/19/1996 ND(0.039) ND(0.080) ND(0.039) ND(0.039) ND(0.039) ND(0.039) 0.22 0.220.5-2 7/19/1996 ND(0.036) ND(0.074) ND(0.036) ND(0.036) ND(0.036) ND(0.036) 0.077 0.0770-1 7/22/2008 ND(0.032) ND(0.032) ND(0.032) ND(0.032) ND(0.032) ND(0.032) 0.020 J 0.020 J1-6 7/22/2008 ND(0.033) ND(0.033) ND(0.033) ND(0.033) ND(0.033) ND(0.033) ND(0.033) ND(0.033)0-1 7/23/2008 ND(0.033) ND(0.033) ND(0.033) ND(0.033) ND(0.033) ND(0.033) 0.027 J 0.027 J1-6 7/23/2008 ND(0.035) ND(0.035) ND(0.035) ND(0.035) ND(0.035) 0.020 J 0.067 0.0870-1 7/25/2008 ND(0.034) ND(0.034) ND(0.034) ND(0.034) ND(0.034) 0.048 0.095 0.1431-6 7/25/2008 ND(0.032) ND(0.032) ND(0.032) ND(0.032) ND(0.032) ND(0.032) ND(0.032) ND(0.032)0-1 3/10/2004 ND(0.037) ND(0.037) ND(0.037) ND(0.037) ND(0.037) ND(0.037) 0.13 0.131-6 3/10/2004 ND(0.038) ND(0.038) ND(0.038) ND(0.038) ND(0.038) ND(0.038) ND(0.038) ND(0.038)0-1 6/20/2006 ND(0.033) J ND(0.033) J ND(0.033) J ND(0.033) J ND(0.033) J ND(0.033) J ND(0.033) J ND(0.033) J1-6 6/20/2006 ND(0.031) J ND(0.031) J ND(0.031) J ND(0.031) J ND(0.031) J ND(0.031) J ND(0.031) J ND(0.031) J0-1 10/29/2004 ND(0.037) ND(0.037) ND(0.037) ND(0.037) ND(0.037) ND(0.037) 0.034 J 0.034 J1-6 10/29/2004 ND(0.037) [ND(0.038)] ND(0.037) [ND(0.038)] ND(0.037) [ND(0.038)] ND(0.037) [ND(0.038)] ND(0.037) [ND(0.038)] ND(0.037) [ND(0.038)] ND(0.037) [ND(0.038)] ND(0.037) [ND(0.038)]0-1 3/9/2004 ND(0.038) ND(0.038) ND(0.038) ND(0.038) ND(0.038) ND(0.038) ND(0.038) ND(0.038)1-6 3/9/2004 ND(0.036) ND(0.036) ND(0.036) ND(0.036) ND(0.036) ND(0.036) ND(0.036) ND(0.036)0-1 9/22/2003 ND(0.039) ND(0.039) ND(0.039) ND(0.039) ND(0.039) ND(0.039) 0.068 0.0681-6 9/22/2003 ND(0.040) ND(0.040) ND(0.040) ND(0.040) ND(0.040) ND(0.040) ND(0.040) ND(0.040)0-1 3/10/2004 ND(0.035) ND(0.035) ND(0.035) ND(0.035) ND(0.035) ND(0.035) ND(0.035) ND(0.035)1-6 3/10/2004 ND(0.036) ND(0.036) ND(0.036) ND(0.036) ND(0.036) ND(0.036) ND(0.036) ND(0.036)0-1 8/20/2003 ND(0.018) ND(0.011) ND(0.018) ND(0.011) ND(0.011) ND(0.011) 0.042 P 0.0421-6 8/20/2003 ND(0.032) ND(0.032) ND(0.032) ND(0.032) ND(0.032) ND(0.032) ND(0.032) ND(0.032)0-1 8/20/2003 ND(0.018) ND(0.011) ND(0.018) ND(0.011) ND(0.011) ND(0.011) ND(0.018) ND(0.022)1-6 8/20/2003 ND(0.033) ND(0.033) ND(0.033) ND(0.033) ND(0.033) ND(0.033) ND(0.033) ND(0.033)0-1 8/20/2003 ND(0.17) ND(0.17) ND(0.17) ND(0.17) ND(0.17) ND(0.17) 0.11 JP 0.11 J1-6 8/20/2003 ND(0.033) ND(0.033) ND(0.033) ND(0.033) ND(0.033) ND(0.033) ND(0.033) ND(0.033)0-1 9/22/2003 ND(0.036) ND(0.036) ND(0.036) ND(0.036) ND(0.036) ND(0.036) 1.0 1.01-6 9/22/2003 ND(0.036) ND(0.036) ND(0.036) ND(0.036) ND(0.036) ND(0.036) ND(0.036) ND(0.036)0-1 8/25/2003 ND(0.64) ND(0.64) ND(0.64) ND(0.64) ND(0.64) ND(0.64) 0.70 P 0.701-6 8/25/2003 ND(0.034) ND(0.034) ND(0.034) ND(0.034) ND(0.034) ND(0.034) 0.058 P 0.0580-1 8/25/2003 ND(0.035) ND(0.035) ND(0.035) ND(0.035) ND(0.035) ND(0.035) 0.27 P 0.271-6 8/25/2003 ND(0.036) ND(0.036) ND(0.036) ND(0.036) ND(0.036) ND(0.036) 0.021 JP 0.021 J0-1 10/1/2003 ND(0.039) ND(0.039) ND(0.039) ND(0.039) ND(0.039) 0.11 0.28 0.391-6 10/1/2003 ND(0.038) ND(0.038) ND(0.038) ND(0.038) ND(0.038) ND(0.038) ND(0.038) ND(0.038)0-1 8/26/2003 ND(0.032) ND(0.032) ND(0.032) ND(0.032) ND(0.032) ND(0.032) 0.049 P 0.0491-6 8/26/2003 ND(0.033) ND(0.033) ND(0.033) ND(0.033) ND(0.033) ND(0.033) ND(0.033) ND(0.033)0-1 10/1/2003 ND(0.042) ND(0.042) ND(0.042) ND(0.042) ND(0.042) ND(0.042) 0.25 0.251-6 10/1/2003 ND(0.038) ND(0.038) ND(0.038) ND(0.038) ND(0.038) ND(0.038) ND(0.038) ND(0.038)0-1 8/26/2003 ND(0.033) ND(0.033) ND(0.033) ND(0.033) ND(0.033) ND(0.033) 0.086 P 0.0861-6 8/26/2003 ND(0.034) ND(0.034) ND(0.034) ND(0.034) ND(0.034) ND(0.034) 0.069 P 0.069

RAA10-W-I21 1-6 5/29/2003 ND(0.034) J ND(0.034) J ND(0.034) J ND(0.034) J ND(0.034) J ND(0.034) J ND(0.034) J ND(0.034) J0-1 9/25/2003 ND(0.035) ND(0.035) ND(0.035) ND(0.035) ND(0.035) 0.19 0.26 0.451-6 9/25/2003 ND(0.037) ND(0.037) ND(0.037) ND(0.037) ND(0.037) ND(0.037) ND(0.037) ND(0.037)

UB-SS-4 0-0.5 12/18/1996 ND(0.87) ND(1.8) ND(0.87) ND(0.87) ND(0.87) ND(0.87) 14 P 14

Depth(feet)

SampleID

Excavation #1

2 RAA10-W-P8

RAA10-W-J3

RAA10-W-J2

H78B-19

DRA-SB-18

4

RAA10-W-J17

RAA10-W-I17

RAA10-W-K17

10

9

8

PCB SOIL SAMPLING RESULTSTABLE 1

UNKAMET BROOK AREA - WEST

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

RAA9-H22

RAA9-H21

RAA10-W-P9

7

3 RAA10-W-M11

RAA10-W-P11

RAA10-W-N12

RAA10-W-L18

RAA10-W-J20

RAA10-W-J21

RAA10-W-K21

RAA10-W-I22

RAA10-W-K186

5

RAA10-W-L20

RAA10-W-K19

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PCB SOIL SAMPLING RESULTSTABLE 1



1.2.3.4.

P - Greater than 25% difference between primary and confirmation collumn. J - Indicates that the associated numerical value is an estimated concentration.

Data Qualifiers:

Field duplicate sample results are presented in brackets.ND - Analyte was not detected. The number in parentheses is the associated detection limit.Samples have been validated as per GE's EPA-approved FSP/QAPP, General Electric Company, Pittsfield, Massachusetts.Samples were collected by ARCADIS and submitted to CompuChem Environmental Corporation and SGSEnvironmental Services, Inc. for analysis of PCBs.

Notes:


Excavation #: 1 2 2 2Sample ID: RAA10-W-J2 RAA10-W-P8 RAA10-W-P9 RAA9-H22

Sample Depth (feet): 0-1 0-1 0-1 0-1Parameter Date Collected: 07/22/08 07/25/08 03/10/04 10/29/04Volatile Organics1,1,1-Trichloroethane 500 ND(0.0049) ND(0.0053) ND(0.0056) ND(0.0056)2-Butanone -- 0.018 0.0080 J ND(0.011) ND(0.011)4-Methyl-2-pentanone -- ND(0.012) ND(0.013) ND(0.011) ND(0.011)Acetone 50 0.086 0.1 ND(0.022) ND(0.022)Acetonitrile -- ND(0.97) J ND(1.1) J ND(0.11) J ND(0.11) JBromomethane 0.5 ND(0.0049) J ND(0.0053) J ND(0.0056) ND(0.0056)Chloromethane -- ND(0.0049) ND(0.0053) ND(0.0056) ND(0.0056)Methyl Methacrylate -- ND(0.0049) ND(0.0053) ND(0.0056) ND(0.0056)Methylene Chloride -- 0.0016 J ND(0.0053) ND(0.0056) ND(0.0056)Propionitrile -- ND(0.97) J ND(1.1) J ND(0.011) J ND(0.011)Toluene 500 ND(0.0049) ND(0.0053) ND(0.0056) ND(0.0056)trans-1,4-Dichloro-2-butene -- ND(0.010) ND(0.011) ND(0.0056) ND(0.0056)Semivolatile Organics2-Methylnaphthalene 80 ND(0.32) ND(0.35) ND(0.37) ND(0.37)Acenaphthene 1,000 ND(0.32) ND(0.35) ND(0.37) ND(0.37)Acenaphthylene 10 ND(0.32) ND(0.35) 0.51 0.28 JAnthracene 1,000 ND(0.32) ND(0.35) 0.51 0.13 JBenzo(a)anthracene 7 ND(0.32) 0.15 J 2.4 0.27 JBenzo(a)pyrene 2 ND(0.32) 0.63 1.7 0.28 JBenzo(b)fluoranthene 7 ND(0.32) 0.65 1.4 0.098 JBenzo(g,h,i)perylene 1,000 ND(0.32) 0.071 J 1.4 ND(0.37)Benzo(k)fluoranthene 70 ND(0.32) 0.11 J 1.5 0.22 Jbis(2-Ethylhexyl)phthalate 200 ND(0.32) ND(0.35) ND(0.37) ND(0.37)Butylbenzylphthalate -- ND(0.32) ND(0.35) ND(0.37) ND(0.37)Chrysene 70 0.032 J 0.21 J 3.2 0.34 JDiallate ND(0.32) ND(0.35) ND(0.75) ND(0.75)Dibenzo(a,h)anthracene 0.7 ND(0.32) ND(0.35) 0.35 J ND(0.37)Dibenzofuran -- ND(0.32) ND(0.35) ND(0.37) ND(0.37)Di-n-Octylphthalate -- ND(0.32) ND(0.35) ND(0.37) ND(0.37)Fluoranthene 1,000 0.058 J 0.36 5.8 0.7Fluorene 1,000 ND(0.32) ND(0.35) 0.11 J ND(0.37)Indeno(1,2,3-cd)pyrene 7 ND(0.32) 0.30 J 1.1 ND(0.37)Naphthalene 40 ND(0.32) ND(0.35) ND(0.37) ND(0.37)Phenanthrene 500 ND(0.32) 0.19 J 1.8 0.085 JPyrene 1,000 0.055 J 0.37 5.7 0.47Furans2,3,7,8-TCDF -- ND(0.00000025) X 0.0000020 J 0.0000022 Y ND(0.00000038) YTCDFs (total) -- 0.0000032 0.000030 J 0.000022 I 0.00000121,2,3,7,8-PeCDF -- ND(0.00000053) ND(0.0000011) X ND(0.00000039) ND(0.00000031)2,3,4,7,8-PeCDF -- 0.00000093 J 0.0000061 0.0000058 ND(0.00000071)PeCDFs (total) -- 0.0000096 0.000091 J 0.000080 I 0.00000561,2,3,4,7,8-HxCDF -- ND(0.00000053) ND(0.0000023) X ND(0.00000035) ND(0.0000011)1,2,3,6,7,8-HxCDF -- ND(0.00000053) 0.0000025 J ND(0.00000032) ND(0.00000091)1,2,3,7,8,9-HxCDF -- ND(0.00000053) ND(0.0000013) ND(0.00000049) ND(0.00000027)2,3,4,6,7,8-HxCDF -- 0.00000089 J 0.000007 ND(0.00000034) ND(0.0000019)HxCDFs (total) -- 0.0000099 0.000098 0.000058 0.000031,2,3,4,6,7,8-HpCDF -- 0.0000032 J 0.000026 0.000014 0.00000721,2,3,4,7,8,9-HpCDF -- ND(0.00000053) 0.0000020 J ND(0.00000061) ND(0.00000066)HpCDFs (total) -- 0.0000073 0.000065 0.000028 0.000015OCDF -- 0.0000068 J 0.000029 ND(0.0000018) ND(0.0000053)

APPENDIX IX+3 SOIL SAMPLING RESULTSTABLE 2



MCP Method 1 S-1 Soil Standard

(GW-2/GW-3)


Excavation #: 1 2 2 2Sample ID: RAA10-W-J2 RAA10-W-P8 RAA10-W-P9 RAA9-H22

Sample Depth (feet): 0-1 0-1 0-1 0-1Parameter Date Collected: 07/22/08 07/25/08 03/10/04 10/29/04





(GW-2/GW-3)Dioxins2,3,7,8-TCDD 0.00002 ND(0.00000022) ND(0.00000046) ND(0.00000028) ND(0.00000013)TCDDs (total) -- ND(0.00000022) ND(0.00000046) Q ND(0.00000028) ND(0.00000013)1,2,3,7,8-PeCDD -- ND(0.00000053) ND(0.00000069) ND(0.0000013) ND(0.00000033)PeCDDs (total) -- ND(0.00000053) 0.000001 ND(0.0000013) ND(0.00000033)1,2,3,4,7,8-HxCDD -- ND(0.00000053) ND(0.00000083) ND(0.00000047) ND(0.00000049)1,2,3,6,7,8-HxCDD -- ND(0.00000053) ND(0.0000031) X ND(0.00000044) ND(0.00000066)1,2,3,7,8,9-HxCDD -- ND(0.00000053) 0.0000013 J ND(0.00000046) ND(0.00000065)HxCDDs (total) -- 0.0000011 J 0.000013 J 0.000052 ND(0.0000015)1,2,3,4,6,7,8-HpCDD -- 0.0000062 0.000038 ND(0.00000069) 0.0000068HpCDDs (total) -- 0.000011 0.000061 ND(0.00000069) 0.000014OCDD -- 0.000044 0.00013 0.00003 0.000054Total TEQs (WHO TEFs) -- 0.0000012 0.000006 0.0000042 0.00000088InorganicsAntimony 20 0.990 B ND(3.86) J ND(6.00) ND(6.00)Arsenic 20 25 5.61 4.9 5.9Barium 1,000 17.9 B 37.9 J 22 23Beryllium 100 ND(0.994) ND(0.965) J 0.190 B 0.310 BCadmium 2 ND(0.497) ND(0.483) 0.380 B 0.130 BChromium 30 14.1 11.9 5.8 6.8Cobalt -- 12.5 11.5 6.8 7.2Copper -- 35.3 J 20.6 J 12 16Cyanide 100 ND(0.730) ND(0.850) 0.0580 B 0.0530 BLead 300 13.1 27.7 7.8 12Mercury 20 0.00345 B 0.0262 B ND(0.110) ND(0.110)Nickel 20 22.4 21.4 11 14Selenium 400 9.58 9.18 ND(1.00) ND(1.00)Silver 100 0.125 B ND(0.965) ND(1.00) ND(1.00)Sulfide -- ND(2.70) ND(2.20) 7.1 16Thallium 8 ND(0.994) J ND(0.965) J ND(1.10) J 1.00 BTin -- ND(9.94) 0.481 J ND(10) ND(10.0)Vanadium 600 11 21.8 4.90 B 8.7Zinc 2,500 63.3 63.4 47 40


Excavation #: 2 3 4 4Sample ID: RAA9-H22 RAA10-W-N13 RAA10-W-H15 RAA10-W-H15

Sample Depth (feet): 1-6 0-1 0-1 1-6Parameter Date Collected: 10/29/04 09/23/03 05/28/03 05/28/03Volatile Organics1,1,1-Trichloroethane 500 NA ND(0.0054) ND(0.0050) NA2-Butanone -- NA ND(0.11) 0.0099 J NA4-Methyl-2-pentanone -- NA ND(0.011) 0.00067 J NAAcetone 50 NA ND(0.11) 0.035 B NAAcetonitrile -- NA ND(0.11) ND(0.0050) J NABromomethane 0.5 NA ND(0.011) 0.0010 JB NAChloromethane -- NA ND(0.011) 0.0010 J NAMethyl Methacrylate -- NA ND(0.011) ND(0.047) NAMethylene Chloride -- NA ND(0.0054) 0.0010 JB NAPropionitrile -- NA ND(0.054) ND(0.24) NAToluene 500 NA ND(0.0054) 0.00097 JB NAtrans-1,4-Dichloro-2-butene -- NA ND(0.011) 0.021 JB NASemivolatile Organics2-Methylnaphthalene 80 ND(0.37) [ND(0.38)] ND(0.36) ND(0.35) ND(0.36)Acenaphthene 1,000 ND(0.37) [ND(0.38)] ND(0.36) ND(0.35) ND(0.36)Acenaphthylene 10 ND(0.37) [ND(0.38)] ND(0.36) ND(0.35) ND(0.36)Anthracene 1,000 ND(0.37) [ND(0.38)] ND(0.36) 0.022 J ND(0.36)Benzo(a)anthracene 7 ND(0.37) [ND(0.38)] ND(0.36) 0.27 J ND(0.36)Benzo(a)pyrene 2 ND(0.37) [ND(0.38)] ND(0.36) 0.19 J ND(0.36)Benzo(b)fluoranthene 7 ND(0.37) [ND(0.38)] ND(0.36) 0.20 J ND(0.36)Benzo(g,h,i)perylene 1,000 ND(0.37) [ND(0.38)] ND(0.36) 0.12 J ND(0.36)Benzo(k)fluoranthene 70 ND(0.37) [ND(0.38)] ND(0.36) 0.19 J ND(0.36)bis(2-Ethylhexyl)phthalate 200 ND(0.37) [ND(0.37)] ND(0.36) ND(0.35) 0.067 JButylbenzylphthalate -- ND(0.37) [ND(0.38)] ND(0.36) ND(0.35) ND(0.36)Chrysene 70 ND(0.37) [ND(0.38)] ND(0.36) 0.26 J ND(0.36)Diallate ND(0.75) [ND(0.76)] ND(0.72) ND(0.35) ND(0.36)Dibenzo(a,h)anthracene 0.7 ND(0.37) [ND(0.38)] ND(0.36) 0.065 J ND(0.36)Dibenzofuran -- ND(0.37) [ND(0.38)] ND(0.36) ND(0.35) ND(0.36)Di-n-Octylphthalate -- ND(0.37) [ND(0.38)] ND(0.36) ND(0.35) ND(0.36)Fluoranthene 1,000 ND(0.37) [ND(0.38)] ND(0.36) 0.47 ND(0.36)Fluorene 1,000 ND(0.37) [ND(0.38)] ND(0.36) ND(0.35) ND(0.36)Indeno(1,2,3-cd)pyrene 7 ND(0.37) [ND(0.38)] ND(0.36) 0.12 J ND(0.36)Naphthalene 40 ND(0.37) [ND(0.38)] ND(0.36) ND(0.35) ND(0.36)Phenanthrene 500 ND(0.37) [ND(0.38)] ND(0.36) 0.079 J ND(0.36)Pyrene 1,000 ND(0.37) [ND(0.38)] ND(0.36) 0.46 ND(0.36)Furans2,3,7,8-TCDF -- ND(0.00000012) [ND(0.00000011)] ND(0.00000019) X 0.00000063 J 0.00000018 JTCDFs (total) -- ND(0.00000012) [ND(0.00000011)] 0.000004 0.0000097 0.00000451,2,3,7,8-PeCDF -- ND(0.000000096) [ND(0.000000096)] ND(0.00000013) X ND(0.00000026) X ND(0.00000012) X2,3,4,7,8-PeCDF -- ND(0.00000011) [ND(0.000000096)] 0.0000012 J 0.0000025 J ND(0.0000016) XPeCDFs (total) -- ND(0.00000016) [ND(0.00000016)] 0.000015 0.000031 0.0000171,2,3,4,7,8-HxCDF -- ND(0.00000012) [ND(0.00000012)] ND(0.00000033) ND(0.00000043) X ND(0.00000028)1,2,3,6,7,8-HxCDF -- ND(0.00000011) [ND(0.00000011)] 0.00000044 J 0.00000051 J 0.00000027 J1,2,3,7,8,9-HxCDF -- ND(0.00000012) [ND(0.00000012)] ND(0.00000042) ND(0.00000060) ND(0.00000034)2,3,4,6,7,8-HxCDF -- ND(0.00000011) [ND(0.00000011)] 0.0000014 J 0.0000019 J 0.00000086 JHxCDFs (total) -- ND(0.00000012) [ND(0.00000012)] 0.000019 0.000031 0.0000131,2,3,4,6,7,8-HpCDF -- ND(0.00000023) [ND(0.00000027)] 0.0000018 J 0.0000016 J ND(0.00000060)1,2,3,4,7,8,9-HpCDF -- ND(0.00000014) [ND(0.00000014)] ND(0.00000025) 0.00000016 J ND(0.000000058) XHpCDFs (total) -- ND(0.00000023) [ND(0.00000027)] 0.0000045 0.0000049 0.0000019OCDF -- ND(0.00000035) [ND(0.00000041)] 0.0000014 J 0.0000014 J 0.00000042 J

GENERAL ELECTRIC COMPANY - PITTSFIELD, MASSACHUSETTSUNKAMET BROOK AREA - WEST



(GW-2/GW-3)

(Results are presented in dry weight parts per million, ppm)


Excavation #: 2 3 4 4Sample ID: RAA9-H22 RAA10-W-N13 RAA10-W-H15 RAA10-W-H15

Sample Depth (feet): 1-6 0-1 0-1 1-6Parameter Date Collected: 10/29/04 09/23/03 05/28/03 05/28/03

GENERAL ELECTRIC COMPANY - PITTSFIELD, MASSACHUSETTSUNKAMET BROOK AREA - WEST



(GW-2/GW-3)


Dioxins2,3,7,8-TCDD 0.00002 ND(0.00000012) [ND(0.00000012)] ND(0.00000021) ND(0.00000011) ND(0.00000011)TCDDs (total) -- ND(0.00000012) [ND(0.00000012)] ND(0.00000031) ND(0.00000023) ND(0.00000027)1,2,3,7,8-PeCDD -- ND(0.00000020) [ND(0.00000018)] ND(0.00000025) ND(0.00000025) ND(0.00000044) XPeCDDs (total) -- ND(0.00000020) [ND(0.00000018)] ND(0.00000020) ND(0.00000025) ND(0.00000027)1,2,3,4,7,8-HxCDD -- ND(0.00000020) [ND(0.00000020)] ND(0.00000026) ND(0.00000016) X ND(0.00000027)1,2,3,6,7,8-HxCDD -- ND(0.00000017) [ND(0.00000017)] ND(0.00000019) X ND(0.00000014) X ND(0.00000015) X1,2,3,7,8,9-HxCDD -- ND(0.00000018) [ND(0.00000017)] ND(0.00000025) ND(0.00000025) ND(0.00000027)HxCDDs (total) -- ND(0.00000020) [ND(0.00000020)] ND(0.00000043) 0.0000014 ND(0.00000049)1,2,3,4,6,7,8-HpCDD -- ND(0.00000028) [ND(0.00000075)] 0.0000022 J 0.0000014 J ND(0.00000057)HpCDDs (total) -- ND(0.00000030) [ND(0.00000075)] 0.0000043 0.0000014 0.0000011OCDD -- ND(0.0000028) J [0.0000078 J] 0.000031 0.000011 0.0000033 JTotal TEQs (WHO TEFs) -- 0.00000025 [0.00000024] 0.0000011 0.0000018 0.00000087InorganicsAntimony 20 ND(6.00) [ND(6.00)] ND(6.00) 0.300 J 0.500 JArsenic 20 4.50 [4.30] 3 3.8 3.9Barium 1,000 26.0 [24.0] 12.0 B 45.9 J 69.8 JBeryllium 100 0.320 B [0.350 B] 0.210 B 0.190 B 0.160 BCadmium 2 ND(0.500) [0.170 B] 0.140 B 0.0700 B 0.0600 BChromium 30 6.50 [8.80] 5.00 J 7 7.2Cobalt -- 9.10 [8.20] 5.4 33.5 32.3Copper -- 14.0 [14.0] 9.4 29.3 J 27.1 JCyanide 100 0.0290 B [0.0270 B] 0.0450 B 0.120 B 0.100 BLead 300 7.80 [8.60] 5.1 5.90 J 6.50 JMercury 20 ND(0.110) [ND(0.110)] ND(0.110) ND(0.0170) ND(0.0170)Nickel 20 13.0 [13.0] 8.8 10.9 13.1Selenium 400 ND(1.00) [ND(1.00)] ND(1.00) 0.510 J 0.660 JSilver 100 ND(1.00) [ND(1.00)] ND(1.0) ND(0.0900) 0.110 BSulfide -- ND(5.60) [ND(5.70)] ND(5.40) ND(25.0) ND(26.0)Thallium 8 0.980 B [ND(1.10)] ND(1.10) R RTin -- ND(10.0) [ND(10.0)] ND(10) 6.80 B 7.40 BVanadium 600 6.80 [7.90] ND(4.4) 8.4 7.9Zinc 2,500 46.0 [41.0] 28 32.9 39.2


Excavation #: 5 6 7, 8 7, 8 7, 8Sample ID: RAA10-W-K17 RAA10-W-K18 RAA10-W-K19 RAA10-W-K19 RAA10-W-K19

Sample Depth (feet): 1-6 0-1 0-1 1-3 1-6Parameter Date Collected: 08/20/03 08/25/03 08/25/03 08/25/03 08/25/03Volatile Organics1,1,1-Trichloroethane 500 NA ND(0.0040) 0.00057 J ND(0.0050) J NA2-Butanone -- NA 0.0035 J ND(0.013) J ND(0.014) J NA4-Methyl-2-pentanone -- NA ND(0.011) ND(0.013) J ND(0.014) J NAAcetone 50 NA 0.029 0.021 J 0.017 J NAAcetonitrile -- NA ND(0.0040) ND(0.0050) J ND(0.0050) J NABromomethane 0.5 NA ND(0.0040) ND(0.0050) J ND(0.0050) J NAChloromethane -- NA ND(0.0040) ND(0.0050) J ND(0.0050) J NAMethyl Methacrylate -- NA 0.00088 JB 0.00068 J ND(0.055) J NAMethylene Chloride -- NA 0.00071 JB 0.00060 J ND(0.0050) J NAPropionitrile -- NA 0.0071 JB 0.0060 J 0.0045 J NAToluene 500 NA 0.00040 J ND(0.0050) J ND(0.0050) J NAtrans-1,4-Dichloro-2-butene -- NA 0.032 JB 0.037 J 0.040 J NASemivolatile Organics2-Methylnaphthalene 80 ND(0.34) 0.11 J ND(0.37) NA ND(0.38)Acenaphthene 1,000 ND(0.34) ND(0.34) ND(0.37) NA ND(0.38)Acenaphthylene 10 ND(0.34) 0.092 J 0.019 J NA ND(0.38)Anthracene 1,000 ND(0.34) 0.050 J ND(0.37) NA ND(0.38)Benzo(a)anthracene 7 ND(0.34) 0.26 J 0.041 J NA ND(0.38)Benzo(a)pyrene 2 ND(0.34) 0.22 J 0.046 J NA ND(0.38)Benzo(b)fluoranthene 7 ND(0.34) 0.22 J 0.040 J NA ND(0.38)Benzo(g,h,i)perylene 1,000 ND(0.34) 0.092 J 0.038 J NA ND(0.38)Benzo(k)fluoranthene 70 ND(0.34) 0.25 J 0.042 J NA ND(0.38)bis(2-Ethylhexyl)phthalate 200 ND(0.34) ND(0.34) ND(0.37) NA ND(0.38)Butylbenzylphthalate -- ND(0.34) ND(0.34) ND(0.37) NA ND(0.38)Chrysene 70 ND(0.34) 0.25 J 0.059 J NA ND(0.38)Diallate ND(0.34) ND(0.34) ND(0.37) NA ND(0.38)Dibenzo(a,h)anthracene 0.7 ND(0.34) ND(0.34) J 0.021 J NA ND(0.38)Dibenzofuran -- ND(0.34) ND(0.34) ND(0.37) NA ND(0.38)Di-n-Octylphthalate -- ND(0.34) 0.031 J ND(0.37) NA ND(0.38)Fluoranthene 1,000 ND(0.34) 0.38 0.052 J NA ND(0.38)Fluorene 1,000 ND(0.34) 0.024 J ND(0.37) NA ND(0.38)Indeno(1,2,3-cd)pyrene 7 ND(0.34) ND(0.34) J ND(0.37) NA ND(0.38)Naphthalene 40 ND(0.34) ND(0.34) ND(0.37) NA ND(0.38)Phenanthrene 500 ND(0.34) 0.088 J 0.024 J NA ND(0.38)Pyrene 1,000 ND(0.34) 0.36 0.056 J NA ND(0.38)Furans2,3,7,8-TCDF -- ND(0.00000010) 0.0000024 Y 0.0000044 Y NA 0.00000026 JTCDFs (total) -- ND(0.00000010) 0.000095 0.00012 NA 0.0000061,2,3,7,8-PeCDF -- ND(0.000000094) X ND(0.0000018) 0.0000018 J NA 0.00000019 J2,3,4,7,8-PeCDF -- 0.00000013 J 0.000031 0.000043 NA 0.0000021 JPeCDFs (total) -- 0.0000019 0.00035 0.0005 NA 0.0000241,2,3,4,7,8-HxCDF -- 0.000000060 J 0.0000066 0.0000085 NA 0.00000051 J1,2,3,6,7,8-HxCDF -- 0.00000011 J 0.0000067 0.0000096 NA 0.00000059 J1,2,3,7,8,9-HxCDF -- ND(0.00000026) 0.0000030 J 0.0000031 J NA 0.00000022 J2,3,4,6,7,8-HxCDF -- 0.00000011 J 0.000022 0.000035 NA 0.0000016 JHxCDFs (total) -- 0.0000015 0.0003 0.00045 NA 0.0000221,2,3,4,6,7,8-HpCDF -- 0.00000022 J 0.000019 0.000035 NA 0.0000017 J1,2,3,4,7,8,9-HpCDF -- ND(0.00000026) 0.0000029 J 0.0000036 J NA 0.00000022 JHpCDFs (total) -- 0.00000048 0.000054 0.000096 NA 0.0000047OCDF -- 0.00000022 J 0.000011 0.000023 NA 0.0000011 J





(GW-2/GW-3)


Excavation #: 5 6 7, 8 7, 8 7, 8Sample ID: RAA10-W-K17 RAA10-W-K18 RAA10-W-K19 RAA10-W-K19 RAA10-W-K19

Sample Depth (feet): 1-6 0-1 0-1 1-3 1-6Parameter Date Collected: 08/20/03 08/25/03 08/25/03 08/25/03 08/25/03





(GW-2/GW-3)Dioxins2,3,7,8-TCDD 0.00002 ND(0.00000010) ND(0.00000023) X ND(0.00000032) X NA ND(0.00000011)TCDDs (total) -- ND(0.00000022) 0.000002 0.0000029 NA ND(0.00000023)1,2,3,7,8-PeCDD -- 0.000000075 J ND(0.0000017) X ND(0.0000025) X NA ND(0.00000024) XPeCDDs (total) -- 0.000000075 0.000015 0.000016 NA 0.000000561,2,3,4,7,8-HxCDD -- ND(0.00000010) X 0.0000012 J ND(0.0000013) X NA ND(0.00000014) X1,2,3,6,7,8-HxCDD -- ND(0.00000026) 0.0000051 J 0.0000042 J NA 0.00000026 J1,2,3,7,8,9-HxCDD -- 0.000000079 J 0.0000027 J 0.0000023 J NA 0.00000019 JHxCDDs (total) -- 0.00000019 0.00005 0.000042 NA 0.00000111,2,3,4,6,7,8-HpCDD -- 0.00000077 J 0.000015 0.000019 NA 0.0000011 JHpCDDs (total) -- 0.0000018 0.000033 0.000039 NA 0.0000023OCDD -- 0.000014 0.000047 0.00014 NA 0.0000081Total TEQs (WHO TEFs) -- 0.00000028 0.000022 0.00003 NA 0.0000016InorganicsAntimony 20 ND(0.290) J ND(0.380) J ND(0.420) J NA ND(0.430) JArsenic 20 3.4 2.8 2.0 NA 2.2Barium 1,000 24.1 J 52.2 18.4 NA 18.1Beryllium 100 0.210 B 0.170 B 0.120 B NA 0.130 BCadmium 2 ND(0.0500) 0.370 B 0.290 B NA 0.280 BChromium 30 6.8 7.1 4.8 NA 5.4Cobalt -- 9.3 6.10 J 4.00 J NA 4.70 JCopper -- 17.2 15.7 13 NA 9.8Cyanide 100 ND(0.0200) ND(0.0200) ND(0.0200) NA ND(0.0200)Lead 300 14.7 J 10.3 J 10.4 J NA 4.90 JMercury 20 0.0250 B 0.068 0.0260 B NA ND(0.0180)Nickel 20 17.5 12.4 8.9 NA 9.1Selenium 400 ND(0.330) J 0.570 J 0.530 J NA ND(0.470) JSilver 100 ND(0.130) ND(0.140) ND(0.160) NA ND(0.160)Sulfide -- 44.9 21.5 25.6 NA 29.8Thallium 8 ND(0.350) J ND(0.420) J ND(0.470) J NA ND(0.480) JTin -- 3.80 J ND(6.40) ND(5.40) NA ND(5.40)Vanadium 600 7.7 14.3 8.5 NA 7.1Zinc 2,500 42.6 44.4 J 29.9 J NA 30.2 J


Excavation #: 9 10 10 10Sample ID: RAA10-W-J21 RAA10-W-I21 RAA10-W-I22 UB-SS-4

Sample Depth (feet): 0-1 0-1 1-6 0-0.5Parameter Date Collected: 08/26/03 05/29/03 09/25/03 03/04/97Volatile Organics1,1,1-Trichloroethane 500 ND(0.0040) ND(0.0050) NA ND(0.027)2-Butanone -- ND(0.011) 0.010 J NA ND(0.047)4-Methyl-2-pentanone -- ND(0.011) ND(0.013) NA ND(0.033)Acetone 50 0.0082 J 0.12 NA ND(0.12)Acetonitrile -- 0.0053 ND(0.0050) J NA ND(0.27)Bromomethane 0.5 ND(0.0040) ND(0.0050) NA ND(0.027)Chloromethane -- ND(0.0040) ND(0.0050) NA ND(0.047)Methyl Methacrylate -- ND(0.044) ND(0.054) NA ND(0.067)Methylene Chloride -- 0.0017 JB 0.00087 J NA ND(0.020)Propionitrile -- 0.0028 JB ND(0.27) NA ND(0.79)Toluene 500 0.00065 J 0.00061 JB NA ND(0.020)trans-1,4-Dichloro-2-butene -- 0.032 JB 0.00077 JB NA ND(0.027)Semivolatile Organics2-Methylnaphthalene 80 ND(0.35) 0.028 J ND(0.37) ND(1.1)Acenaphthene 1,000 ND(0.35) 0.14 J ND(0.37) ND(0.87)Acenaphthylene 10 0.051 J 0.024 J ND(0.37) ND(0.88)Anthracene 1,000 0.026 J 0.20 J ND(0.37) 0.069 JBenzo(a)anthracene 7 0.14 J 0.61 ND(0.37) 0.28 JBenzo(a)pyrene 2 0.16 J 0.57 ND(0.37) 0.25 JBenzo(b)fluoranthene 7 0.13 J 0.47 ND(0.37) 0.32 JBenzo(g,h,i)perylene 1,000 0.14 J 0.37 J ND(0.37) 0.14 JBenzo(k)fluoranthene 70 0.18 J 0.56 ND(0.37) 0.15 Jbis(2-Ethylhexyl)phthalate 200 ND(0.35) 0.12 J ND(0.36) ND(0.99)Butylbenzylphthalate -- ND(0.35) 0.054 J ND(0.37) ND(0.89)Chrysene 70 0.17 J 0.74 ND(0.37) 0.34 JDiallate ND(0.35) ND(0.39) ND(0.74) NADibenzo(a,h)anthracene 0.7 0.051 J 0.069 J ND(0.37) ND(0.57)Dibenzofuran -- ND(0.35) 0.060 J ND(0.37) ND(0.91)Di-n-Octylphthalate -- ND(0.35) ND(0.39) ND(0.37) ND(0.63)Fluoranthene 1,000 0.25 J 1.3 ND(0.37) 0.79 JFluorene 1,000 ND(0.35) 0.11 J ND(0.37) ND(0.91)Indeno(1,2,3-cd)pyrene 7 0.14 J ND(0.39) ND(0.37) 0.14 JNaphthalene 40 ND(0.35) 0.039 J ND(0.37) ND(0.87)Phenanthrene 500 0.049 J 0.98 ND(0.37) 0.46 JPyrene 1,000 0.23 J 1.4 ND(0.37) 0.50 JFurans2,3,7,8-TCDF -- 0.0000021 J ND(0.0000065) X ND(0.00000036) ND(0.00026)TCDFs (total) -- 0.000034 0.0001 0.0000027 ND(0.00026)1,2,3,7,8-PeCDF -- 0.0000034 J ND(0.0000060) X ND(0.00000029) ND(0.00027)2,3,4,7,8-PeCDF -- 0.000035 ND(0.000022) X 0.0000016 ND(0.00027)PeCDFs (total) -- 0.00025 0.00043 0.000010 I ND(0.00027)1,2,3,4,7,8-HxCDF -- 0.000024 ND(0.000014) X 0.000002 ND(0.00036)1,2,3,6,7,8-HxCDF -- 0.000012 J 0.000011 J 0.0000027 ND(0.00039)1,2,3,7,8,9-HxCDF -- 0.000012 J ND(0.0000041) X 0.000002 ND(0.00044)2,3,4,6,7,8-HxCDF -- 0.000020 J 0.00004 0.0000022 ND(0.00037)HxCDFs (total) -- 0.00027 0.00045 0.000015 I ND(0.0013) X1,2,3,4,6,7,8-HpCDF -- 0.000022 J 0.000061 ND(0.00000015) ND(0.00022) X1,2,3,4,7,8,9-HpCDF -- 0.0000084 J ND(0.0000061) X 0.000002 ND(0.00018)HpCDFs (total) -- 0.000061 0.00015 0.0000018 ND(0.00055) XOCDF -- ND(0.000013) 0.000042 J ND(0.00000022) ND(0.00041)


(GW-2/GW-3)

TABLE 2APPENDIX IX+3 SOIL SAMPLING RESULTS

UNKAMET BROOK AREA - WESTGENERAL ELECTRIC COMPANY - PITTSFIELD, MASSACHUSETTS



Excavation #: 9 10 10 10Sample ID: RAA10-W-J21 RAA10-W-I21 RAA10-W-I22 UB-SS-4

Sample Depth (feet): 0-1 0-1 1-6 0-0.5Parameter Date Collected: 08/26/03 05/29/03 09/25/03 03/04/97


(GW-2/GW-3)

TABLE 2APPENDIX IX+3 SOIL SAMPLING RESULTS

UNKAMET BROOK AREA - WESTGENERAL ELECTRIC COMPANY - PITTSFIELD, MASSACHUSETTS


Dioxins2,3,7,8-TCDD 0.00002 ND(0.0000013) X ND(0.0000023) ND(0.00000044) ND(0.000052)TCDDs (total) -- 0.00001 ND(0.0000023) 0.000001 ND(0.000052)1,2,3,7,8-PeCDD -- 0.0000078 J ND(0.0000061) X ND(0.00000032) ND(0.00027)PeCDDs (total) -- 0.00026 0.000012 ND(0.00000032) ND(0.00027)1,2,3,4,7,8-HxCDD -- 0.0000087 J ND(0.0000035) X 0.0000018 ND(0.00028)1,2,3,6,7,8-HxCDD -- 0.000038 0.0000076 J 0.0000017 ND(0.00026)1,2,3,7,8,9-HxCDD -- 0.000019 J ND(0.0000046) X 0.0000017 ND(0.00026)HxCDDs (total) -- 0.00032 0.000028 0.0000052 ND(0.00026)1,2,3,4,6,7,8-HpCDD -- 0.00009 0.000071 ND(0.00000014) ND(0.00053)HpCDDs (total) -- 0.00019 0.00014 ND(0.00000014) ND(0.00053)OCDD -- ND(0.000090 0.0006 0.0000062 ND(0.00089) XTotal TEQs (WHO TEFs) -- 0.000041 0.000019 0.0000026 0.00037InorganicsAntimony 20 ND(0.390) J 0.880 J ND(6.00) 0.760 BArsenic 20 3 6.1 4.7 6.8Barium 1,000 24.6 48.3 J 37 58.8Beryllium 100 0.210 B 0.300 B 0.300 B 0.370 BCadmium 2 0.310 B 0.320 B ND(0.500) 0.620 BChromium 30 6.8 13.3 6.6 46.1Cobalt -- 6.20 J 31.4 14 NACopper -- 14.7 30.4 J 15 25.7Cyanide 100 ND(0.0200) 0.190 B 0.0490 B NALead 300 9.90 J 30.4 J 6.4 60.9Mercury 20 0.0180 B 0.160 J ND(0.110) 0.320 NNickel 20 12.1 17.4 22.0 21.0Selenium 400 0.630 J 1.30 J ND(1.00) 0.610 BSilver 100 ND(0.150) ND(0.100) ND(1.00) 0.360 BNSulfide -- 32.1 ND(27.0) ND(5.50) NAThallium 8 ND(0.430) J R 1.00 B ND(0.650)Tin -- ND(6.70) 8.60 B ND(10) 1.90 BVanadium 600 10 18.7 7.0 35Zinc 2,500 40.9 J 70.2 59 90.1 *

Notes:1. Samples were collected and analyzed by General Electric Company subcontractors for Appendix IX + 3 constituents.2. Samples have been validated as per GE's EPA-approved FSP/QAPP, General Electric Company, Pittsfield, Massachusetts.3. NA - Not Analyzed - Laboratory did not report results for this analyte.4. ND - Analyte was not detected. The number in parentheses is the associated detection limit.5. Total 2,3,7,8-TCDD toxicity equivalents (TEQs) were calculated using Toxicity Equivalency Factors (TEFs) derived by the World Health Organization (WHO) and published by Van den Berg et al. in Environmental Health Perspectives 106(2), December 1998.6. Field duplicate sample results are presented in brackets.7. With the exception of dioxin/furans, only those constituents detected in one or more samples are summarized.8. Shade indicates that value exceeds MCP Method1 S-1 Soil Standard (GW-2/GW-3) Criteria.

Data Qualifiers:

Organics (volatiles, semivolatiles, dioxin/furans) B - Analyte was also detected in the associated method blank. J - Indicates that the associated numerical value is an estimated concentration. I - Polychlorinated Diphenyl Ether (PCDPE) Interference. Q - Indicates the presence of quantitative interferences. X - Estimated maximum possible concentration. Y - 2,3,7,8-TCDF results have been confirmed on a DB-225 column.

Inorganics B - Indicates an estimated value between the instrument detection limit (IDL) and practical quantitation limit (PQL). J - Indicates that the associated numerical value is an estimated concentration. N - Indicates sample matrix spike analysis was outside control limits.

R - Data was rejected due to a deficiency in the data generation process. * - Indicates laboratory duplicate analysis was outside control limits.


Figures

STORM SEWER REPAIR

EXCAVATION 1 AND

SOIL SAMPLE LOCATIONS

GENERAL ELECTRIC COMPANY

PITTSFIELD, MASSACHUSETTS


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NOTES:

I. THE BASE MAP FEATURES PRESENTED ON THIS FIGURE ARE FROM ELECTRONIC COPY OF SURVEY DRAWING GE-1110-003-CX101M(REV 8-1-07) PROVIDED BY HILL ENGINEERS, ARCHITECTS AND PLANNERS.

2. HORIZONTAL DATUM IS NAD 27 AND VERTICAL DATUM IS NGVID 29 BASED UPON CONTROL P~NTS PROVIDED BY ARCADIS AND FORESIGHT LAND SERVICES.

3. THE BOUNDARY LINE INFORMATION SHOWN HEREON WAS PROVIDED BY FORESIGHT LAND SERVICES AND IS NOT THE RESULT OF A RETRACEMENT SURVEY PREPARED BY HILL ENGINEERS, ARCHITECTS, PLA NNERS, INC.

4. UTILITIES SHOWN ARE BASED ON DRA'MNGS PROVIDED BY GENERAL DYNAMICS FACILITIES MANAGER. SOME OF THE DRAIMNGS ARE UNTITLED AND DATE BACK TO THE 1940'S. UPDA TIES OR MODIFICATIONS TO THE F AGILITY MAY HAVE RESULTED IN REROUTING OR ADDITIONS TO UTILITIES THAT HAVE NOT BEEN SHOWN THEREFORE UTILITIES SHOWN SHOULD BE CONSIDERED APPROXIMATE AND PRIOR TO ANY CONSTRUCTION, THE CONTRACTOR SHOULD CONTACT "DIG-SAFE" AND HAVE ALL UNDERGROUND UTILITIES MARKED ON THE GROUND.

5. SAMPLE LOCATIONS ARE APPROXIMATE.

---K11-7-2

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LEGEND o

PORTION OF REMOVAL ACTION1 AREA SHOWN ON THIS FIGURE

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. EXCAVATION #1

OVERHEAD 'MRES

EXISTING CONTOUR

EDGE OF BUSHES/HEDGE

PAVIED AREA

UNPAVED AREA

EXISTING SOIL BORING LOCATION (1-FOOT OR GREA TIER SAMPLE DEPTH)

RELEVANT SOIL SAMPLE LOCATION

PROPOSED EXCAVATION LOCATION

0 60' ~-----J

GRAPHIC SCALE

~ARCADIS

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STORM SEWER REPAIR

EXCAVATIONS 2 AND 3 AND

SOIL SAMPLE LOCATIONS




FIGURE

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STORM SEWER REPAIR

EXCAVATIONS 4 THROUGH 10

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