Re: GE-Pittsfield/Housatonic River Site · 2020-07-04 · Transmitted via Overnight Courier June 12, 2012 Mr. Dean Tagliaferro EPA Project Coordinator c/o Weston Solutions, Inc

Transmitted via Overnight Courier

June 12, 2012

Mr. Dean Tagliaferro EPA Project Coordinator c/o Weston Solutions, Inc. 1 0 Lyman Street Pittsfield, MA 01201

Re: GE-Pittsfield/Housatonic River Site Former lOc Oil Pipelines at GE Plant Area (GECDlOO) Revised Investigation, Oil Removal, and Capping Plan

Dear Mr. Tagliaferro:

GE 159 Plastics Avenue Pittsfield, MA 01201 USA

On August 3, 2010, the General Electric Company (GE) submitted to the United States Environmental Protection Agency (EPA) a proposed plan to address the remaining portions of a piping system that was used, prior to its decommissioning in 1964, to convey 1 Oc mineral oil containing polychlorinated biphenyls (PCBs) at concentrations at and above 50 parts per million (ppm) to locations within GE's Pittsfield, Massachusetts facility. That plan outlined a series of activities to be implemented (to the extent possible), generally including the following measures:

• Inspection of the piping for the presence or absence of residual oil;

• If residual oil is observed, removal and containerization of the residual oil for proper disposal at a permitted off-site disposal facility; and

• Following the removal step, capping of any pipe openings and filling the in-place piping, to the extent possible, with cement-bentonite slurry, non-shrink grout, and/or high-density polyurethane foam.

As discussed in that plan, these measures would augment activities that GE had previously conducted between 1964 and 2009 for certain sections of the piping network.

In February 2012, GE received preliminary comments from EPA and Massachusetts Department of Environmental Protection (MDEP) on the August 3, 2010 plan. GE subsequently provided responses to those comments and additional follow-up information to EPA, and discussed those responses and information with EPA. Based on those communications, GE has developed this Revised Investigation, Oil Removal, and Capping Plan (Plan). This Plan contains the following parts:

A. Regulatory Basis for Plan

B. Summary of Available Information on the Pipeline System

C. Proposed Cleanup Plan

D. Explanation ofNo Unreasonable Risk

Corporate Em-ironmenul Programs

A. REGULATORY BASIS FOR PLAN

Mr. Dean Tagliaferro June 12, 2012

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EPA previously requested that GE seek EPA approval of this Plan pursuant to 40 CPR§ 761.61(c)- which is part of EPA's regulations under the Toxic Substances Control Act (TSCA)- as a risk-based alternative to the disposal requirements for PCB Remediation Waste set forth in 40 CPR § 761.61(a) & (b). As discussed further below, however, this piping network is not subject to the requirements of EPA's TSCA regulations in 40 CPR§ 761.61, including 40 CPR§ 761.61(c), and GE reserves the right to contest the application of those requirements to this network in the future.

The piping system being addressed in this Plan was decommissioned and taken out of service in 1964. PCB Remediation Waste that was disposed of before the effective dates of the TSCA prohibitions ( 1978-79) is "presumed not to pose an unreasonable risk of injury to health or the environment."1 Unless the EPA Regional Administrator specifically finds that "pre-TSCA" PCB Remediation Waste presents an unreasonable risk, such waste does not have to be cleaned up in accordance with 40 CPR § 761.61.2 For example, EPA has stated that there is no obligation to dig up and dispose of electrical equipment disposed of prior to 1978 "unless the EPA Regional Administrator makes a finding that· spills, leaks, or other uncontrolled releases or discharges from the site constitute ongoing disposal that may present an unreasonable risk of injury to health or the environment from exposure to PCBs at the site."3

The EPA Regional Administrator has not made such an unreasonable risk finding regarding the underground pipes at the Pittsfield site. Indeed, the available evidence indicates that these pipes do not present an unreasonable risk. Prior to execution of the Consent Decree (CD) for this Site, GE reported to EPA the existence of the pipes, the PCB concentrations of the associated oil, and the actions previously taken to address the pipes. This information was thus known during the development of the soil- and groundwaterrelated Performance Standards established in the CD. To the extent that there was or is a risk to human health and the environment due to releases from these pipes, any such potential risk will be addressed by attainment of the Performance Standards in the CD. For this reason and other reasons discussed below, the pipes in their current condition do not pose an unreasonable risk of injury to human health or the environment. 4

EPA has also recently indicated that, in addition to making a determination under 40 CPR§ 761.6l(c), EPA intends to review and approve this Plan under the CD for this Site. GE notes, however, that there is likewise no basis in the CD to require further cleanup or disposal activities for these pipelines. As discussed above, the information relating to these pipes was known at the time of negotiation of the CD; and there are no standards or requirements in the CD (apart from the general soil- and groundwater-related Performance Standards) addressing the investigation, cleanup, or disposal of these (or other) pipelines.

Nonetheless, GE is voluntarily submitting this Plan for EPA's approval in the interest of cooperation and based on discussions with EPA. Regardless of whether the TSCA regulations and/or the CD apply, the end result will be the same: The pipelines in their current condition do not pose an unreasonable risk to health or the environment, and implementing this Plan will further reduce any residual risks posed by these pipes, thus meeting the unreasonable risk standard of 40 CPR § 761.6l(c) and the CD standard of protecting human health and the environment.

1 40 CFR § 761.50(b)(3)(i)(A). 2 40 CFR § 761.50(b)(3)(i)(B). 3 EPA PCB Questions & Answers at pp. 46-47 (2009). 4 GE also notes that EPA has no administrative authority to compel GE to take any action regarding these pipes under either Section 7 or Section 17 ofTSCA, as the U.S. covenants established under the CD (Paragraph 161) preclude such actions.

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B. SUMMARY OF AVAILABLE INFORMATION ON THE PIPELINE SYSTEM5

The inactive piping system subject to this Plan consists of two 4-inch diameter pipes and one 2-inch diameter pipe. These three pipes originate from the former Building 12F Tank Farm Area, which was located near the southeast comer of Building 100 at the Site. The Building 12F Tank Farm consisted of 14 underground storage tanks (USTs) with capacities ranging from 20,000 to 25,000 gallons, and one aboveground storage tank (AST) with a capacity of 100,000 gallons. The tanks were used for the storage of 1 Oc mineral oil used to support manufacturing operations at the facility. The facility stopped using the piping system in 1964.

The piping system transported IOc mineral oil from the former Building 12F Tank Farm along the southern edge of the East Street Area 2-North Removal Action Area [RAA]), along the west side of New York Avenue to Tyler Street Extension, along the south side of Tyler Street Extension (along the northern edge of the Hill 78 Area-Remainder RAA), along the north side of Buildings OP-1 and OP-2, and then traversing beneath Plastics A venue and terminating at Building 51 (at the Unkamet Brook Area RAA). The material of construction for these pipes is not documented; however, ductile iron was typical for such piping and is consistent with observations of removed piping segments. This entire length of piping spans a horizontal distance of approximately 5,000 feet.

In addition to the piping system described above, there is a 2-inch diameter oil pipe that extends from the former Building 12F Tank Farm Area in a northeast direction to Building 9, spanning a horizontal distance of approximately 800 feet. This pipe segment is also addressed under this Plan.

Figures 1 through 4 provide plan views of the above-referenced pipe routing, and Figures 5 through 8 show the pipe system in profile. For a number of reasons, there is some variation between the piping configuration shown on these figures and actuallocations.6

The operational history and prior removal measures (PRMs) relating to these piping systems have been previously documented in numerous reports submitted to both EPA and MDEP. These include, but are not necessarily limited to, the following:

• MCP Interim Phase II Report and Current Assessment Summary for East Street Area 1/USEPA Area 3 (Blasland, Bouck & Lee [BBL], October 1994);

• MCP Interim Phase II Report and Current Assessment Summary for Unkamet Brook Area/USEPA Area I (BBL, January 1995);

• Assessment of Potential Preferential Pathways in East Street Area 1/USEPA Area 3 (BBL, November 1996).

• Assessment of Potential Preferential Pathways in Hill 78 Area/USEP A Area 2 (BBL, March 1997);

5 Information presented in this section is based upon a review of GE's historical records.

6 Information regarding the locations and elevations of the piping system was obtained from several original plan/design drawings. These drawings are provided in Attachment 1 for reference. These drawings are plan/design drawings; as-built information associated with these pipes is not available. Thus, the actual location of the installed pipes may have varied slightly from the plan/design drawings, and may have also been modified during subsequent system operations. In certain instances, the pipe locations shown on the plan/design drawings are not consistent with current visual observations. Furthermore, the information provided on these drawings does not provide reference to current horizontal or vertical survey data. Accordingly, the overlay of these piping locations onto existing base map information is an approximation. Following EPA's preliminary comments on the prior version of this Plan, GE reviewed the historical information again, and made a few revisions to the attached figures based on that information. However, some discrepancies remain, and thus field activities will be necessary to identify the pipe locations and features.

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• Assessment of Potential Preferential Pathways in Unkamet Brook Area/USEPA Area I (BBL, July 1997);

• Letter to EPA from GE dated November 2, 2000 regarding Draining and Removal of Oil Lines- Merrill Road Mass Highway Project;

• Letter to EPA from GE dated October 9, 2009 regarding PCB results associated with oil drained from three pipes located north of Building OP-2.

The PRMs associated with the pipe system can be summarized as follows:

• PRMl (1964)- The pipes emanating from the USTs and AST associated with the Building 12F Tank farm are believed to have been cut and drained as part of the tank removal and closure process. The approximate location ofPRM1 is shown on Figures 1 and 2.

• PRM2 (1989) - Records indicate that, during construction of a steam line distribution system in 1989/1990, the three pipes were disconnected and capped at New York Avenue in the fall of 1989. During this same timeframe, the pipes were reportedly cut and drained at the low spot along Tyler Street Extension midway between New York A venue and the parking lot west of Building OP-2, with sections of each pipe reportedly removed. Approximately 754 gallons of oil were drained and reported to contain PCB concentrations ranging between 113 and 707 ppm. The approximate location of PRM2 is shown on Figures 1, 2, and 3.

• PRM3 (January 1990; December 1996)- Also during the above-referenced steam line construction, an additional 1,315 gallons of oil were removed from the eastern terminal points of the pipes at Building 51 in January 1990. In December 1996, these same three terminal points were reopened at Building 51; however, upon initial observation, no oils or fluids were observed. A vacuum was subsequently applied and approximately 50 gallons of fluid were removed. The approximate location of PRM3 is shown on Figures 1 and 4.

• PRM4 (December 1996- January 1997)- As part of past investigation activities related to the three pipes, soil near the pipes' low point along the southern side of Tyler Street Extension (north/northwest of the present-day Hill 78 On-Plant Consolidation Area [OPCA]) was excavated, exposing the three pipes. The pipes were opened and approximately 400 gallons of residual liquids were drained, which were reported to contain PCB concentrations ranging between 112 and 716 ppm. The approximate location of PRM4 is shown on Figures 1 and 3.

• PRM5 (August 28, 2000 - October 2, 2000) - During the Merrill Road reconstruction project in late summer 2000, the three oil pipes were encountered. The pipes were cold-tapped, and approximately 447 gallons of oil were drained and reported to contain PCB concentrations ranging from non-detect to 720 ppm. Following the draining activities, approximately 300 linear feet of piping was removed and the remaining pipe openings were capped. The approximate location of PRM5 is shown on Figures 1 and 2.

• PRM6 (October 7, 2009)- The three pipes were encountered north of Building OP-2 during slope repair activities on October 7, 2009. Approximately 175 gallons of oil were drained and reported to contain PCB concentrations ranging from 268 to 400 ppm. The associated pipe segments (approximately 30 feet in length) were removed and the remaining pipe openings were capped. The approximate location of PRM6 is shown on Figures 1 and 4.

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The available records indicate that a total of approximately 3,141 gallons of oil/fluids were removed from these pipes from 1989 to 2009, with PCB concentrations ranging from non-detect to 720 ppm. In addition, an unknown quantity of additional oil was likely removed from these pipes in 1964 as part of the initial decommissioning of the Building 12F Tank Farm. In many of these instances, the oil was drained using suction methods, ensuring more complete removal.

C. PROPOSED CLEANUP PLAN

GE's plan generally consists of accessing the pipes at various locations where access can be obtained; visually assessing the presence or absence of residual oil within the pipes; removing, containerizing, sampling, and disposing of any residual oil; investigating the pipe segments via air flow testing and/or video inspection for any additional oil or other blockages and addressing such blockages if feasible; and abandoning the remaining pipes in-place by filling the pipes and sealing the ends of the severed pipe openings and end points, to the extent practicable. In addition, at the location north of Building OP-2 where the pipes are located above-grade and are readily accessible, GE will remove such piping segments for proper off-site disposal.

Based on a review of historical mapping and other information regarding past pipe/oil removal activities, GE has identified 11 locations along the piping network at which physical access to the underground pipes may be feasible and will be attempted. These 11 locations, referred to as access points, are shown on Figures 1 through 4, and their locations and depths below the ground surface are also shown on the profiles on Figures 5 through 8.7 The access points were identified based on identification of relative high points and relative low points along the piping network. The relative low points are the most probable locations where any residual oil might have accumulated over the years arid be present, while the relative high points are favorable locations for filling (allowing slurry or grout material to flow downwards) and also potentially facilitate the application of a negative pressure (vacuum) to suction residual oil from the relative low points. A summary of GE' s planned oil investigation, removal, and pipe abandonment methods is provided below.

Note that the actual scope of the assessment, inspection, oil removal, and grouting activities described in this Plan is based on the information that is currently available. However, given the likelihood that the specific piping configurations and actual field conditions will differ from those presented herein, it is expected that several field-determined modifications will be necessary to implement this project. To the extent that any such future modifications are significantly different from the activities described herein, GE will communicate such modifications to the EPA. Otherwise, GE expects to implement measures that are consistent with the planned activities and objectives described below, with the understanding that the scope of the actual activities may differ from those presented in this Plan.

1. Oil Investigation and Removal Steps:

a. At each access point, GE will attempt to locate the pipe, using survey control, ground penetrating radar (GPR), magnetometer, and/or similar equipment used for locating subsurface utilities, supplemented, if necessary, by limited exploratory excavations.8 GE will make reasonable efforts to locate all of the subsurface piping; however, several obstacles may preclude access to certain locations (e.g., possible variance between mapping and actual locations, proximity to active utilities, presence beneath public roads or other structures that cannot be disturbed, presence of piping at significant depth). Additionally, in certain instances, relative low points are located beneath areas that are inaccessible (i.e., relative low point 2 located beneath Merrill Road and relative low point 4 located beneath the Hill 78 OPCA). At

7 Based on further review of the available mapping, field visits, and EPA's preliminary comments on the prior version of this Plan, GE made a few minor modifications to the locations of these access points from those shown in the prior version of the Plan. 8 The issue of conducting such excavations in areas that are currently subject to Grants of Environmental Restrictions and Easements (EREs) is discussed below.

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these locations, GE has identified the next closest accessible location(s) for investigation purposes, and will utilize visual observations along with air flow testing and video inspection (discussed further below) to assess whether residual oils may be present in the pipes.

b. Once the pipes have been located, they will be accessed at the designated access points through excavations where necessary. In this regard, it should be noted that seven of these access points are located in areas subject to Grants of Environmental Restrictions and Easements (EREs). Specifically, access points API through AP3 are located within East Street Area 2-North, which is subject to an ERE recorded on December 21, 2011; and access points AP4 through AP7 are located within Hill 78 AreaRemainder, which is subject to an ERE recorded on August 11, 2011.9 These EREs contain excavation restrictions that would appear to prohibit the types of excavations necessary at these access points unless a Conditional Exception is granted by MDEP.10 However, these EREs specifically provide (in Paragraph 7) that the restrictions set forth therein do not apply to excavation or digging activities conducted by GE pursuant to the CD for purposes of implementing response actions under the CD. As a result, assuming that EPA grants approval of the measures described in this Plan as required response actions under the CD (despite GE's position discussed in Part A above), the ERE restrictions would not preclude implementation of this Plan and a Conditional Exception would not be necessary.

c. Once accessed, the pipes will be cold-tapped and visually inspected to identify the presence or absence of residual oil. Any visible residual oil will be removed.

d. Oil removal will be performed by a combination of gravity draining and vacuuming at accessible points, to the extent practicable. Oil that is removed will be properly containerized and will be characterized as necessary for subsequent off-site disposal. As noted above, certain physical obstacles may preclude oil removal via vacuuming.

e. GE will then further investigate the pipe segments by one or both of the following methods:

1. Air Flow Verification - For pipe segments that are accessible and open at both ends, to assess whether there is a potential complete or partial blockage of the pipe interior (due to accumulated oil residuals or otherwise), a positive air-flow test will be conducted. At one end of the pipe, positive air pressure will be applied; the opposite end will be monitored for changes in air flow.

2. Video Inspection - For pipe segments with access from only one end, or where positive air-flow is not measured (based on the above testing), video inspection will be conducted to assess the presence of oil or other potential blockage within the piping. This inspection will utilize a "push" camera (which is typically used for video inspection of pipes with a 6-inch diameter or less). Based on consultation with video camera vendors, the theoretical range of the push camera in clean, straight, and unobstructed piping is approximately 300 linear feet; however, the capabilities and progress of video inspection might be affected by valves, elbows, and other appurtenances potentially present within the pipelines.

Refer to Figure 1 for the locations of pipe segments proposed for air flow verification or video inspection.

9 The excavations at AP7 may also extend into the area covered by the ERE for the On-Plant Consolidation Areas, which was also recorded on August 11, 2011. That ERE contains the same restrictions and provisions as the two EREs mentioned in the text and thus would be subject to the same analysis discussed below.

10 The only specified permitted uses in these EREs for subsurface excavations (apart from sampling) are: (a) a permitted use for excavation of 10 cubic yards of soil or less per project, which would not be sufficient for the necessary excavations here; and (b) a permitted use for excavations for Utility Work, which is defined in the EREs as the maintenance and repair of pipes and other conveyances used for various purposes, and would not appear to cover the investigation work described in this Plan.

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f. If additional oil or other obstruction is identified, GE will remove the oil or other obstruction by gravity draining and/or vacuuming if practicable. However, certain obstructions (e.g., crushed pipe sections) may not be amenable to removal. In these cases, the pipe segments will be filled on either side of the obstruction, to the extent practicable, as described in Section 3 below.

g. The above-grade segment of pipe (approximately 500 linear feet) located north of Building OP-2 (shown on Figures 1 and 4) will be removed and containerized for proper off-site disposal. Prior to pipe removal, residual oil present within the piping will be properly containerized for subsequent off-site disposal. Samples of the residual oil will be collected for PCB analysis. Each of the remaining pipe end points will be investigated via visual observations along with video inspection to determine the presence of residual oil. Any residual oil will be removed consistent with the procedures discussed in steps l.c and 1.d above.

2. Documentation and Confirmation of Appropriate Oil Investigation/Removal Measures:

GE will implement the following measures to document the oil investigation/removal measures outlined above:

a. It is not practical to physically access each linear foot of the entire piping network for investigation purposes. As discussed above, GE is targeting relative low points along the piping, since, if any residual oil is still present within the pipes, it would likely have accumulated at one or more of these locations over time. As such, determination of the presence or absence of residual oil within the pipes will be made based on observations at the various relative low points.

b. Confirmation of the presence/absence of residual oil at each access point and subsequent removal of any residual oil will be made through visual observations by GE personnel and on-site representatives of EPA.

c. At each access point, GE will collect photographs to document its visual observations. Additionally, at each pipe segment with access at both ends, GE will assess potential pipe blockages through air flow testing, as described above. If contiguous air flow is confirmed, the pipe will be filled as described further in Section 3 (below). As noted above, if air does not readily pass through the pipes during air flow verification, or if the pipe segment is accessible at only one end, a "push" camera will be deployed to assess the presence or absence and location of obstruction(s) within the pipe interior (e.g., residual oil, crushed section of pipe). The images captured by the camera during video inspection will be documented, as well as the horizontal coordinates and vertical depths of the obstruction(s) within the piping (to the extent such information can be gathered from the video footage).

d. If, during the video inspection, an obstruction( s) is observed, reasonable efforts will be made to remove the obstruction(s). Removal of the obstruction(s) will be verified by deploying a push camera back into the pipe segments to document the pipe condition. If video inspection of the pipe segments confirms that obstruction(s) has been removed, then the segments of pipe will be filled, as described in Section 3. In instances where reasonable efforts were not successful in removing the obstruction(s), the segments of pipe on either side of the obstruction will be filled to the extent practicable, as also described in Section 3.

e. For those pipe segments accessible only at one end due to the presence of a PRM capping location, oil removal and video inspection will be performed iteratively, to the extent practicable, until the PRM capping location is reached.

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For areas where access to the piping system will require soil removals and an open excavation for an extended period of time, protecting the safety of site personnel and the public will be a paramount concern. As such, it is imperative that any EPA review and approval of the measures that have been conducted be performed in the field on an expedited basis.

3. Procedures for Filling Pipes and Capping/Sealing All Pipe Openings:

Following concurrence by EPA field representatives (if needed) that oil investigation and removal measures have been performed to the extent practicable, GE will proceed with filling the pipes and pipe openings, as described below.

a. GE will employ reasonable efforts to fill as much of the pipes as possible utilizing the anticipated access points shown on Figures 1 through 8. The material that will be used to fill the pipes will be composed of a cement-bentonite slurry, non-shrink grout, and/or high-density polyurethane foam. At each access point, the fill will be injected until resistance is achieved- i.e., until no more of the fill can be placed into the pipes at a particular location.

b. Where feasible, pipe segments will be filled from one end, allowing any entrained air to escape out the open end. GE will pressure grout the pipe segments by pumping grout into the lower elevation end of the pipe and up the pipe segment until grout exits the higher elevation end, to the extent practicable. Where access is only available at one end of the pipes, measures will be taken to facilitate pipe filling operations to the extent practicable (e.g., slowly introduce a loose/wet grout mix into the pipe, insert a breather tube down the length of the pipe, etc.). Any point designed as an air escape opening will be equipped to capture any residual liquids that may be pushed out of the pipe by the filling process.

c. GE will measure the approximate grout volume introduced into a pipe segment and compare that volume with the estimated interior pipe volume calculated based on available information. This comparison will be used to determine the approximate extent to which grouting was achieved throughout the pipe segment, for documentation purposes. It should be noted that these quantities are only estimates, and that an exact match between the estimated and actual amount of grout used to fill each segment of pipe is not anticipated. However, these comparisons will provide reasonable assurance regarding the completeness of the grouting efforts.

d. Following filling activities, all pipe openings will be capped or sealed with mechanical plumber's plugs and/or steel pipe caps.

Following the pipe filling and capping/sealing activities, GE will prepare documentation summarizing the above activities.

4. Soil Management and Monitoring:

The management of soils disturbed during the above-referenced activities, as well as related construction, sampling, and air monitoring activities, will be conducted consistent with the EPA-approved Project Operations Plan (POP; March 2007) for this Site, assuming that, as noted above, EPA grants approval of this Plan pursuant to the CD .11 Such activities are outlined below.

11 As discussed above, several of the soil excavation locations are located in areas that are subject to EREs- i.e., those in East Street Area 2-North and those in Hill 78 Area-Remainder. Those EREs contain Soil Management Protocols that govern the management and re-use of soil excavated pursuant to certain of the specified permitted uses in the EREs, as well as the backfilling and restoration of such excavations. However, as also discussed above, assuming that EPA grants approval of this Plan as a required response action under the CD, the restrictions in those EREs and thus the Soil Management Protocols would not apply to the Work performed under this Plan. As a result, GE would conduct soil management activities in those areas (as well as in the areas that are not subject to an ERE) in accordance with the requirements of the POP, as described below.

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• Soil Excavation - Soil excavation activities will be performed consistent with the Site Management Plan (Attachment C of the POP). Such activities generally include, but are not limited to, securing excavations that cannot be feasibly backfilled at the close of a work day with temporary construction fencing, covering temporary soil stockpiles with tarps to minimize the potential for rainfall to contact the stockpile, and cleaning all equipment that comes into contact with affected site media.

• Backfilling - GE will re-use excavated site soils as subsurface backfill in the excavations performed as part of this Plan, to the extent that such re-use is allowable, in accordance with the provisions outlined in Section 3.3 of the Soil Cover/Baclifill Characterization Plan (Attachment B of the POP). GE will submit separately to EPA a summary of the existing soil sample locations associated with each proposed excavation. If, based on a review of the available data set, the spatial average PCB concentration of the candidate backfill material is below 25 ppm, the non-PCB data meet the evaluation criteria outlined in Section 3 .2.2 of the Soil Cover/Baclifill Characterization Plan, and the constituents in the material will not result in an exceedance of the applicable Performance Standards, then the candidate material will be considered suitable for re-use as subsurface backfill (i.e., below the top foot). 12 The top foot of the excavation will be backfilled with clean fill from an outside source that has been characterized consistent with Section 3.2 of the Soil Cover/Baclifill Characterization Plan, and the surface will be restored to match existing conditions. That is, unpaved vegetated areas will be seeded with similar vegetation, and paved areas will be re-paved.

• Ambient Air Monitoring- Perimeter ambient air monitoring will be performed during activities that may result in the generation of airborne particulates (i.e., soil excavation, handling, and backfilling) consistent with the Ambient Air Monitoring Plan (Attachment D of the POP). A project-specific Ambient Air Monitoring Plan (AAMP) has been prepared and includes information relative to the number and locations of ambient air monitoring stations, monitoring/sampling frequency, and notification/action levels. The project-specific AAMP is included as Attachment 2 to this letter.

D. EXPLANATION OF NO UNREASONABLE RISK

As stated previously in this Plan, the pipes in their current condition do not pose an unreasonable risk to human health and the environment, and the measures proposed in this risk-based disposal application will only serve to further mitigate any potential risk. This conclusion is based on the following factors:

1. These pipes have been in place and unused for decades. They were specifically referenced in several different reports submitted to EPA more than a decade ago (as summarized in Part A ofthis Plan above).

2. Much of the oil has already been removed. As discussed above, GE has previously removed over 3,000 gallons of oil from these pipes, and in many cases, suctioned the oil out to ensure more complete removal. In addition, in many of these instances, segments of piping were removed and piping end points were capped. Furthermore, many of the locations from which the oil was previously removed were at piping low points, where most of any remaining oil would have accumulated over the years.

12 In addition, as allowed by Section 3.3 of that plan, in the event that such site material contains PCB levels at or above 25 ppm, GE may still propose to re-use such material as subsurface backfill in the excavations performed as part of this Plan, provided that a supporting rationale demonstrating that the use of such material will allow achievement of the applicable Performance Standards is submitted for EPA review and approvaL Since the pertinent portion of the Unkamet Brook Area is aGE-owned industrial area, the applicable criteria for use of on-site material as subsurface backfill and the Performance Standards are those that would apply to such areas under the CD.

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Mr. Dean Tagliaferro June 12, 2012 Page 10 ofll

3. Any oils that might have leaked from the pipes are already present in the soils around the pipes. EPA set cleanup standards for those soils in establishing the Performance Standards for the GE Plant Area in the CD. Further, EPA determined in Appendix D to the CD (pp. 41-42) that achievement of the soil-related Performance Standards set forth in the CD will result in a condition that will not pose an unreasonable risk of injury to health or the environment under 40 CFR § 761.61 (c).

4. If oil had been released from the pipes in one or more locations, one would expect to see a corresponding spike in adjacent PCB soil data. GE has reviewed the existing PCB data associated with soil samples located within a 50-foot band on either side of the three pipes. Data tables and figures summarizing these soil data are included in Attachment 3. As discussed above, the pipes span three RAAs: East Street Area 2-North, Hill 78 Area-Remainder, and the Unkamet Brook Area. For the Hill 78 Area-Remainder and the Unkamet Brook Area, the substantial majority of the soil data showed either non-detect PCB concentrations or concentrations less than 1 ppm. Of the three RAAs, only East Street Area 2-North showed elevated PCB concentrations- specifically, in 10 samples (from 7 locations), as shown in Table 1 in Attachment 3 and discussed below.

• Six of these 10 samples (i.e., ES 10600.5, ES 106.502, PS-W -94A, PS-W -95A, PS-W -96A, and PSW-97A) were located in either the 0- to 1-foot or 0- to 2-foot depth interval. As such, the elevated PCB concentrations cannot be associated with oil release(s) from the pipes, as these samples are located above the pipes. If there was an oil release at any of these locations, the oil would have flowed downward and one would expect to see elevated PCB concentrations in the deeper soils. At most of these sample locations, the data in the deeper soils show much lower PCB concentrations, and the two locations with elevated concentrations in deeper soils (PS-W-95 and PS-W-96) are discussed below.

• Of the remaining four samples with elevated PCB concentrations at depth, two (PS-W -95B at the 2-to 6-foot depth interval and PS-W-96C at the 6- to 10-foot depth interval) are located at the outer limits of the 50-foot band (i.e., between approximately 30 and 50 feet from the pipes), while another sample (PS-W -97) located much closer to the pipes, and linearly between the pipes and samples PSW-95 and PS-W-96, showed only 0.54 ppm and 1.5 ppm in the 2- to 6-foot and 6- to 10-foot depth intervals, respectively. Again, if oil had been released from the pipes, it would have flowed downward. Based on the proximity of these samples to each other and the pipes, the trend in the data shows increasing PCB concentrations moving upward and away from the pipes, which is not a pattern one would expect to see if there had been an oil release in this location. Furthermore, these two samples (PS-W-95B and PS-W-96C) also had overlying surface samples (PS-W-95A and PS-W-96A, both in the 0- to 2-foot depth interval) with PCB concentrations several times higher than the samples at depth. Accordingly, the PCB concentrations in the deeper samples appear to be more likely attributable to a source emanating from the surface as opposed to the subsurface pipes.

• With respect to the remaining two samples with elevated PCB concentrations (RAA5-G34 [6-15'] and RAA5-I23 [1-6']), their physical proximity to the pipes does not rule out potential influence by past oil release(s); however, the elevated PCB concentrations were primarily attributable to the presence of Aroclor 1254. The PCB data collected from the oil removed from the three pipes north ofBuilding OP-2 (PRM6; October 7, 2009) showed only detections of Aroclor 1260. The variation in Aroclors indicates that the presence ofPCBs is likely from different sources.

In short, a review of the existing PCB soil data along the pipeline corridor does not yield any reliable evidence of past PCB releases from these pipes to adjacent soil.

G:\GE\GE _Pittsfield_ Other-Misc\Reports and Presentations\Pipeline\FinalPian\141121I324LtrRptdoc

Mr. Dean Tagliaferro June 12, 2012 Page 11 of 11

5. Following implementation of GE's Plan, any residual risk would be even further reduced by the removal of additional oil (if present), filling of the pipes to further decrease the potential for mobilization of any residual oil, and capping/sealing the pipes to further reduce the potential for releases of any residual oil.

6. Further, even in the event that residual oils remain following implementation of GE's Plan and such residual oil were released from the pipes, any resultant impacts to groundwater would be addressed by GE's ongoing implementation of the long-term groundwater and non-aqueous-phase liquid (NAPL) monitoring programs required by the CD.

7. In developing this Plan for addressing these pipes, GE reviewed the TSCA regulations and determined that the provisions for abandoning natural gas pipelines contaminated with PCBs at concentrations :?: 50 ppm, as outlined in 40 CFR § 761.60(b)(5), were the most analogous TSCA regulations to the present situation. This Plan for addressing the pipes is consistent with those provisions - which require, for inplace abandonment of pipes with a nominal inside diameter of 4 inches or less, removal of free-flowing liquids, filling the pipes in place, and capping the pipe ends. In those regulations governing abandonment of natural gas pipelines pursuant to TSCA, EPA concluded that these procedures for abandoning natural gas pipelines pursuant to TSCA do not result in an unreasonable risk. 13

These factors clearly demonstrate that the pipes do not pose an unreasonable risk in their current state and that, regardless of whether TSCA and/or the CD apply, implementation of GE's plan will further mitigate any potential remaining risk. To the extent that EPA or MDEP requires additional response actions relating to these pipelines in the future, GE reserves the right to contest any such requirements.

Please feel free to contact me at ( 413) 448-5902 with any questions or comments.

Sincerely,

J1ll 'th ~ 7. {'~JV/IrJ Michael T. Carroll Manager, Pittsfield Remediation Programs

Attachments

cc: T. Conway, EPA H. Inglis, EPA R. Howell, EPA (letter only) M. Gorski, MDEP (letter & CD-ROM) E. Tor, MDEP (letter & CD ROM) J. Rothchild, MDEP (letter only) J. Ziegler, MDEP (2 hard copies & CD-ROM) L. Palmieri, Weston (2 hard copies & CD-ROM) R. McLaren, GE (letter only) R. Gates, GE J. Bieke, Sidley Austin C. Bell, Sidley Austin S. Gutter, Sidley Austin J. Nuss, ARCADIS GE Internal Repositories

13 In addition, the long-term monitoring required by the CD, as referenced in Item 6 above, goes beyond TSCA's provisions for abandoning natural gas pipelines.

G:\GE\GE _Pittsfield_ Other~Misc\Reports and Presentations\Pipeline\FinalPlan\l4l12II324LtrRptdoc

Figures

FORMER BUILDING 12F TANK FARM (PRM1)

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PIPE SECTION ACCESSIBLE AT BOTH ENOS. AIR-FLOW TEST WILL BE PERF'ORMED. IF'

• ••• AIR DOES NOT READILY PASS THROUGH THE PIPE, VIDEO INSPECllON WILL BE CONDUCTED F'ROIII BOTH ENOS OF' THE PIPE SECIIIENTS.

PIPE SECTION ACCESSIBLE AT ONLY ONE END. VIDEO INSPECnON WILL BE

•••• PERFORMED. THE THEORETICAL MAXIIotUW RANGE OF' THE PUSH CAMERA IS 300 UNEAR F'EET. PHYSICAL CONSTRAINTS WAY INHIBIT ACTUAL VIDEO LENGTH.

•••• PIPE TO BE REIIOVED (ABOVEGROUND)

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, - ----GENERAL ELECTRIC alMPANY Pln'SFIB.D MASSACHUSETTS

FORMER 1ijc OIL PIPEUNES

FORMER PIPEUNES ·FORMER BUILDING 12F TANK FARM TO

BUILDINGS 9 a 51

i€J ARCADIS 1

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, ! ,. ---GENERAL ELECTRIC alMPAHY PlnsFIB.D MASSACHUSETTS


i€J ARCADIS 2

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' - ---GENERAL ELECTRIC alMPAHY Pln'SFIB.D MASSACHUSETTS


i€J ARCADIS 3

r

I -QIICUIIl IIIPE SElmON (40+50 TO -46+10) --,

AP8

PRM6

--··--·

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1. 'ltiE BAlE fiN' FOILIEB ....,.nD Cit 1ti1S FlQLIE ltl£ fRDII ~ COP¥ Clf' !IIIMY D!IAWIIO E-1 t1~101111(10£Y 1-1-o?) PIICMDID IY tal. 11a1m.. MUIIU:Ii Ne ~

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1 - ---GENERAL ELECTRIC alMPAHY Pln'SFIB.D MASSACHUSETTS


UNKAIIET BROOKPIPE SEGMENT C-D

(SEE FIGURE 8 FOR PROFILE)

i€J ARCADIS 4

~

I li il! ~ :;

i i

I 24.110

I 20.110

I 18.00

12.00

I Z' 8.00 " 0

I ~ 4.110

I i ! 0.00

u ~ li1 -4.110

ii ~ I(

~ .. & -8.110

~~ dl -12.110 j!i " i! -18.110

;i -31.110

I if -214.110

il II I

I I i i ~~ tl Iii

A B Z4.00

20.00

18.00

-.. -.. .._ ..... -... .. _ 12.00

AP2 RHPI (•7.78) 8.110

4.110

10tGI 11tGI IZtm 13tGI 14tm 15tGI l&tm 17tGI lltm +-----'---"t<,-1------'---'-:::-=:----'----"....,_.L.__-L __ L-_--'------'L--_.L_ _ __t __ ...L.__----'. __ ..L_ _ _J_ __ .L.__-+ O.IIO(EI.EV.-1012) OfiiO I tal 2tCO 8tm 4tCO

RLPI (-9.0)

PRIII5

RLP2 (-22.4)

-4.110

-8.110

-12.00

,, ' ./ ,, ______ .. .. , __________ .. _.....--..

.......__ ______ _ -18.110

-31.110

-24.00

LEGEND:

---- PROAL.E OF FORMER 10C OIL DISTRIBUTION PIPES (APPROXIMATE) (SEE NOlE 1)

e RHPI

e RLPI

PRMII

• AP3

RELAll~ HIGH POINT (APPROXILIA lE)

RELAll~ LOW POINT (APPROXILIA lE)

PRIOR RELIOVAL MEASURE LOCATION (APROXIMATE)

ACCESS POINT (APPROXILIA TE)

----------- EXISTING GROUND SURFACE (SEE NOlE 2)

____fi, _ TOPOGRAPHIC DATA UNAVAILABLE v (MERRILL ROAD)

NOTES:

1. PROFILES AND ELEVATION DATA OBTAINED FROM GE REFERENCE DRAWING NOS. F5-P11-F2 (DAlEO 5/23/51) AND GE T-9524345 (DAlEO B/9/43) •

2. EXISllNG GROUND SURFACE INFERRED BASED ON TOPOGRAPHIC SURVEY (S2059W01) BY FORESIGHT LAND SURVEYORS DAlEO 9/2/05.

GENERAL ELECTRIC alMPAHY PlnsFIELD MASSACHUSETTS


PROFILE OF tOC OIL PIPES FROM BUILDING 12F TANK FARM TO BUILDING 51

PIPE SEGMENT A-B

i€J ARCADIS 5

13.00

12.00

11.00

10.00

1.00

4.00

3.00

2.00

1.00

A' B' taoa

--... , ...... , ___________________________________________ _ 12.011

RI.P1' ( .. 7.!10} AP2

AP1 ~-------------.---t- •~oa

RHP1" { .. 10.00)

1.00

1.00

7.00

8.00

5.00

4.00

3.00

2.00

1.00

0.00 0.00 (ELEV. -1012)

OtOO ttOO 2t00 &tOO 4tOO 5tOO &tOO 7t00 8tOO

LEGEND:

---- PROFILE OF' F'ORMER IOC OIL DISTRIBUTION PIPES (APPROXUAATE) (SEE NOlE 1)

e RHP1'

• RI.P1'

• AP2

RELATIW: HIGH POINT (APPROXIMATE)

RELATIW: LOW POINT (APPROXIMATE)

ACCESS POINT (APPROXIMATE)

----------- EXISTlNG GROUND SURFACE (SEE NOlE Z}

NOTES:

1. PROFILES AND ELEVA liON DATA OBTAINED F'ROM GE REFERENCE DRAWING NOS. F'5-P1 1 -F'2 (DA lED 5/ZJ/51) AND GE T-9524345 (DAlED 8/9/48).

2. EXISTING GROUND SURFACE INFERRED BASED ON TOPOGRAPHIC SURW:Y (S2059W01} BY FORESIGHT LAND SURW:YORS DAlED 9/2/05.

GENERAL ELECTRIC alMPANY PlnsFIB.D MASSACHUSETTS


ilJ ARCADIS 6

B 36.00

32.00

2&111

24.111

20.00

SEE NOTE 3

.... -__... .. -~ /

/ /'

/ 111.00 - "' _../

/-----...._ RHP4 ---"'

~ 12.00

11

·--.... ~o> r·--/ ~ \'\ I

c 88.00

&2.00

28.00

24.00

.211.00

1111.00

12.00

8.111

~ 8.00 _,,1 -~ -----------·

. 1\\ .----------v-4.111 ,/ \~ ! 4.111

~ D.OO +----,---,---fr/ - f-.------r--t-- '1:''-r----.---.----.----:/,...--,f-r -.J_! ---,---.-----r--.----fr--.-----.---.----+- D.OO(ELEV.-1012)

~~~~~~ ~~~~~ ~~ ~~~M~~~ ~ ~ /

I! -4.00 ------',..JRH~P6;-------. ...... ----__./

-8.00

• 12.111

-18.111

-211.00

-.a4.00

RI.P4 (·14.4)

PRIU&4

(-$.1} RI.P5 (-&.3) AJ>7

-4.00

-8.00

·12.111

-18.111

-211.00

-24.00

LEGEND:

---- PROFILE OF' FORMER ICC OIL DISTRIBUTION PIPES (APPROXIMATE) (SEE NOTE 1)

• RHP3

• RLP3

PRIIII2

• 1\1'6

RELA 1111£ HIGH POINT (APPROXIMATE)

RELAll\1£ LOW POINT (APPROXIMATE)

PRIOR REMOVAL MEASURE LOCATION (APPROXIMATE)

ACCESS POINT (APPROXIMATE)

--------- EXISTlNG GROUND SURFACE (SEE NOTE 2)

1--- PIPE SEQJENT 11-IAT DOES NOT t.1A TCH VISUAL OBSERVA liON (SEE NOTE 3)

NOTES:

1. PROALES AND ELEVAllON DATA OBTAINED FROM GE REFERENCE DRAWING NOS. F5-P11-F2 (DATED 5/23/51) AND GE T-9524345 (DATED 8/9/48).

2. EXISTING GROUND SURFACE INFERRED BASED ON TOPOGRAPHIC SURII£Y (S2149W01) BY FORESIGHT LAND SUR~YORS DATED 3/16/06.

3. BASED ON AN O~RLAY OF 11-IE INF'0Rt.1A110N REFERENCED IN NOTES 1 AND 2 ABO~, 11-IE PIPES APPEAR TO BE A80~-GRADE IN 11-115 LOCATlON (BETWEEN STATIONS 3!>+00 AND 38+00). HOWEVER, BASED OIN A \;lSUAL RECOINNAISSANCE, THE PIPES ARE NOT ABOVE-GRADE IN 11-IIS LOCAllOIN,

GENERAL ELECTRIC alMPAHY Pln'SFIELD MASSACHUSETTS


PROFILE OF tOC OIL PIPES FROM BUILDING 12F TANK FARM TO BUILDING 51

PIPE SEGMENT B.C

ilJ ARCADIS 7

c D 32.00 32.111

28.00 211.111

SEE NOTE 3 24.00 KOO

20.00 20.00

~ 18.00

~ 8 12.00

a 8.111

16.00

12.00

8.00

14.00 4.00

1 0.111 -+----.-----.-----.-----.----.----.--~~'-"'-...,....,.,..._...,.:.:~.----.----.----.....-~ 0.00 (ELEV. -1012)

88tQ) 39tOO 40tOO 414()0 424()0 43t<lO 44400 45t<)O 484()0

-4.00 -4.00

-am -8.00

-12.00 -12.00

-18.00 RLPT

-18.00 (-13.3} AP11

LEGEND:

---- PROFILE OF FORMER 10C OIL DISTftiBUllON PIPES (APPROXIMATE) (SEE NOTE 1)

e RHPII

• RLP8

PRIUS

• N'8

RELATIVE HIGH POINT (APPROXJMA TE)

RELATIVE LOW POINT (APPROXIMATE)

PRIOR REMOVAL MEASURE LOCATION (APPROXIMATE)

ACCESS POINT (APPROlOMATE)

EXISllNG GROUND SURFACE ----------- (SEE NOTE 2)

•--- PIPE SEGMENT 11-IAT DOES NOT

MATCH ~SUAL OBSERVAllON (SEE NOTES 3 & 4)

INFERRED PIPE LOCAllON BASED -------- ON \1SUAL OBSERVAllON

(SEE NOTE 4)

NOTES:

1. PROFILES AND ELEVATION DATA OBTAINED FROM GE REFERENCE DRAWING NOS. F5--P11-F2 (DATED 5/23/51) AND GE T-9524345 (DATED 8/9/48).

2. EXISllNG GROUND SURFACE INFERRED BASED ON TOPOGRAPHIC SURVEY BY HILL ENGINEERS, ARCHITECTS, AND PLANNERS (GE-1110-003-CX101) DATED 8/1/07.

3. BASED ON AN OVERLAY OF lHE INFORMATION REFERENCED IN NOTES 1 AND 2 ABOVE. 11-IE PIPES APPEAR TO BE ABOVE-GRADE IN THIS LOCAllON (BETWEEN STAllONS 38+00 AND 39+00). HOWEVER, BASED ON A VISUAL RECONNAISSANCE. 11-IE PIPES ARE NOT ABOVE-GRADE IN 11-IIS LOCAllON.

4. BASED ON AN OVERLAY OF lHE INFORMATION REFERENCED IN NOTES 1 AND 2 ABOVE. 11-IE PIPES APPEAR TO BE BELOw-GRADE IN THIS LOCATION (EAST OF STATION 41+00). HOWEVER, BASED ON A VISUAL RECONNAISSANCE, lHE PIPES ARE ABOVE-GRADE BETYIEEN STAllONS 40+50 AND 46+10.

GENERAL ELECTRIC alMPAHY PlnsFIB.D MASSACHUSETTS


PROFILE OF 10C OIL PIPES FROM BUILDING 12F TANK FARM TO BUILDING S1

PIPE SEGIIENT C-D

i€J ARCADIS 8

Attachment 1

Historical GE Plan/Design Drawings

-

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Attachment 2

Site-Specific Ambient Air Monitoring Plan

Ambient Air Monitoring Plan for PCBs and Particulate Matter

During Soil Handling Activities as part of Pipeline Project Pittsfield, Massachusetts

General Electric Company Pittsfield, Massachusetts Prepared by Berkshire Environmental Consultants, Inc. 1450 East Street, Suite 6-H Pittsfield, MA 01201

Revised June 2012

TABLE OF CONTENTS _____________ 1.0 Introduction 2.0 Sampling Objectives 3.0 Monitoring Locations 4.0 PCB Monitoring Program 4.1 High Volume PCB Sampling 4.2 Analytical Procedures 5.0 Particulate Monitoring Program 6.0 Quality Assurance and Quality Control Procedures 7.0 PCB Sample Documentation, Handling and Shipment 8.0 Meteorological Monitoring 9.0 Documentation and Reporting 10.0 Notification and Action Levels 10.1 PCBs 10.2 Particulate Matter

Ambient Air Monitoring Plan PCBs & Particulate Matter Soil Handling Activities as part of Pipeline Project Revised June 2012 Page 1 1.0 INTRODUCTION

This plan describes the ambient air monitoring for polychlorinated biphenyls (PCBs) and particulate matter which will be conducted during implementation of GE’s revised plan, dated June 2012, for addressing certain pipelines at GE’s facility in Pittsfield, Massachusetts that formerly distributed 10c mineral oil. This project (referred to herein as the “Pipeline Project”) will include soil excavation at a number of discrete locations along the course of the pipelines in question. The air monitoring program will consist of ambient air monitoring for PCBs and particulate matter during soil excavation, handling, and backfilling activities (collectively “soil handing activities”) conducted as part of the Pipeline Project. 2.0 SAMPLING OBJECTIVES

The objectives of the sampling program are two-fold: 1. To obtain valid and representative data on ambient levels of PCBs before and

during soil handling activities on the Pipeline Project to ensure that the activities are not causing an unacceptable increase in ambient air concentrations of PCB.

2. To obtain valid and representative data on ambient levels of particulates before

and during soil handling activities on the Pipeline Project to ensure that the remedial activities are not causing an unacceptable increase in ambient air concentrations of particulate matter.

3.0 MONITORING LOCATIONS

The specific monitoring locations for PCBs and particulate matter will be determined prior to the initiation of the soil handling activities. Twelve monitoring locations along or near the course of these pipelines have been preliminarily identified, as indicated on the attached Figure 2-1. These locations have been selected based on: (a) the location of the soil handling activities; (b) consideration of the predominant wind direction and the location of potential off-site receptors; (c) the presence of obstructions (such as buildings) and other influences (such as truck traffic) that may affect the representativeness of the data; and (d) availability of power, accessibility, and site security. The predominant wind direction is west-northwest (WNW) based on wind rose data from the Albany, NY National Weather Service (NWS) station. Data from the City of Pittsfield Airport meteorological station and the former GE-owned on-site meteorological station also demonstrate a predominant WNW wind direction; however, the data from the local stations also show that the local wind direction and speed vary considerably. Therefore, air monitors have generally been placed in locations that will include good downwind coverage, but also provide coverage between the areas of soil handling and potential off-site receptors.

PCB monitoring will be conducted at three to four on-site monitoring locations during

each PCB sampling event other than the baseline monitoring events, as described in Section 4. Particulate monitoring will be conducted at three to four non-background monitoring locations during periods of soil handling activities (see Section 5).

Ambient Air Monitoring Plan PCBs & Particulate Matter Soil Handling Activities as part of Pipeline Project Revised June 2012 Page 2 The plan for this project has identified several discrete areas of soil handling. For each area of soil handling, specific monitoring locations have been identified. These monitoring locations are identified on Figure 2-1. Several of these locations have been used in previous ambient air monitoring programs for remediation or waste consolidation activities at East Street Area 2-North (ESA2-N) or the On-Plant Consolidation Areas (OPCAs). Below is a summary of the monitoring locations that will be used during soil handling activities at the following locations:

Soil Handling Location Nos. 1 and 3

• Former monitoring location ES2N-1 • Former monitoring location ES2N-2(M) • Former monitoring location ES2N-3 • Former monitoring location ES2N-4

Soil Handling Location No. 2

• PLP-1 • PLP-2 • Former monitoring location ES2N-4

Soil Handling Location Nos. 4, 5, and 6

• Former monitoring location ES2N-1 • Former monitoring location ES2N-2(M) • Former monitoring location OPCA-NW • PLP-3 • Allendale Schoolyard monitoring location (may be co-located with U.S.

Environmental Protection Agency’s [EPA’s] existing air monitoring station)

Soil Handling Location No. 7

• Former monitoring location OPCA-NW • Former monitoring location OPCA-N(M) • Allendale Schoolyard monitoring location (may be co-located with EPA’s

existing air monitoring station) Soil Handling Location No. 8

• Former monitoring location OPCA-SE • Former monitoring location OPCA-N(M) • PLP-4 • Allendale Schoolyard monitoring location (may be co-located with EPA’s

existing air monitoring station) In addition to the locations listed above, a representative industrial background

monitoring location for both PCBs and particulate matter will be established and operated in a parking lot at the corner of Harvard Street and Tyler Street Extension (BK-4) on GE property in Pittsfield.

Ambient Air Monitoring Plan PCBs & Particulate Matter Soil Handling Activities as part of Pipeline Project Revised June 2012 Page 3

4.0 PCB MONITORING PROGRAM

4.1 High-Volume PCB Sampling

The high-volume PCB sampling program will include the following elements: High-Volume Monitoring Locations 3-4 (sites monitored for each event) Background Sites 1 Co-Located Sites (Field Duplicates) 1 Sampling Time 24 hours per sampling event Sampling Period Duration of soil handling activities Frequency of Sampling Twice prior to the onset of soil handling

activities (for baseline sampling locations); once every week during soil handling activities at Locations 4 through 8; and once every four weeks during soil handling activities at Locations 1 through 3*

No. of Blanks Per Sampling Event 1 Sampling Method EPA Compendium Method TO-4A Analytical Method GC/ECD or GC/MS as described in

EPA Method TO-4A

* Sampling frequency may be increased if either PCB or particulate monitoring levels exceed threshold values.

Ambient air baseline monitoring for PCBs will be conducted for two 24-hour

periods at the following monitoring locations prior to the initiation of soil handling activities:

• BK-4 • PLP-1 • PLP-2 • PLP-3 • PLP-4 • Former monitoring location ES2N-1 • Former monitoring location ES2N-2(M) • Former monitoring location OPCA-N(M) • Allendale Schoolyard monitoring location (may be co-located with EPA’s

existing air monitoring station) During soil handling activities at Locations 4 through 8, PCB sampling will be

conducted once every week. At least one 24-hour PCB sampling event will be performed during soil handling for specific activities lasting less than one week. The ambient air monitoring frequency for PCBs during soil handling activities may be increased to bi-


weekly in the event that ambient particulate concentrations at any one location consistently exceed the particulate notification level of 120 µg/m3 (micrograms per cubic meter). “Consistently exceeding” will be defined as concentrations greater than 120 µg/m3 on three consecutive 10-hour days or 5 days in any two-week period. Once PCB concentrations are below PCB notification and action levels (see Section 10 of this Ambient Air Monitoring Plan) for two consecutive bi-weekly events, then PCB sampling frequency will revert to once every four weeks.

During soil handling activities at Locations 1 through 3, PCB sampling will be

conducted once every four weeks. At least one 24-hour PCB sampling event will be performed during soil handling for specific activities lasting less than four weeks. The ambient air monitoring frequency for PCBs during soil handling activities may be increased in the event that ambient particulate concentrations at any one location consistently exceed (as defined above) the particulate notification level of 120 µg/m3.

The specific monitoring locations to be used for a given event will be selected

based on the location and nature of the soil handling activity, predominant wind direction, and the location of potential receptors. In addition, the specific sampling locations may be modified based on those factors, as well as physical obstructions (i.e. trees, buildings, traffic), the availability of power, site security, site accessibility, etc. Any significant modifications to the locations of monitors will be reviewed with the GE Project Manager and EPA.

The sampling method to be used for PCBs in the high-volume samples is EPA

Compendium Method TO-4A, Determination of Pesticides and Polychlorinated Biphenyls in Ambient Air Using High Volume Polyurethane Foam (PUF) Sampling Followed by Gas Chromatographic/Multi-Detector Detection (GC/MD). This method employs a modified high-volume sampler consisting of a glass fiber filter with a polyurethane foam (PUF) backup adsorbent cartridge to sample ambient air at a rate of 0.225 m3/min (cubic meters per minute). A General Metal Works Model GPS-1 Sampler or equivalent will be used. The filter and cartridge will be placed in clean, sealed containers and returned to the laboratory for analysis.

Procedures for sample media preparation and calibration of the sampling system

are specified in Method TO-4A. TO-4A further specifies procedures for calculation and data reporting, and the assessment of data for accuracy and precision.

The samplers will be monitored at six-hour intervals over each 24-hour sampling

period. During these six-hour checks, barometric pressure, temperature, and magnehelic pressure readings will be taken and the air flow adjusted to the target flow rate, as necessary. At the end of the sampling period, the sampling modules containing the fiber filters and PUF adsorbents will be removed from the samplers. Each glass fiber filter will be folded and placed on the PUF adsorbent for that sample and each sample consisting of a fiber filter and PUF adsorbent (inside a glass cartridge) will be wrapped in hexane rinsed aluminum foil. Each fiber filter and PUF adsorbent set will be labeled as one


sample. The samples will be wrapped, packaged in ice and sent under chain-of-custody to the laboratory for analysis.

The PCB sampling probe height for all high-volume monitors will be approximately 2.0 meters above the ground. This height is adequate to represent the breathing zone and to be above the influence of ground activity around the monitor. The location of the samplers will be in conformance, to the extent practical, with the siting requirements for ambient monitors in Ambient Monitoring Guidelines for Prevention of Significant Deterioration (PSD) (U.S. EPA. May, 1987). 4.2 Analytical Procedures

In the high-volume samples, the PCBs on the PUF and filter will be recovered by

the sample extraction procedures described in TO-4A. The extracts will be reduced in volume using concentration techniques as described in TO-4A and subjected to column chromatographic cleanup. The extracts will be analyzed for PCBs using gas chromatography with either electron capture detection (GC/ECD) or mass spectrometry detection (GC/MS) as described TO-4A.

The samples will be analyzed for the following PCB Aroclors:

PCB-1016 PCB-1221 PCB-1232 PCB-1242 PCB-1248 PCB-1254 PCB-1260

The detection limit (DL) for PCB analysis of the high-volume samples will be

0.0003 µg/m3, in consideration of the following:

Avg. Sampling Rate 0.225 m3/min. Avg. Sample Volume 324 m3/PUF Analytical DL 0.1 µg/PUF Project DL 0.0003 µg/m3

5.0 PARTICULATE MONITORING PROGRAM

Real-time particulate monitoring will be conducted during the soil handling activities conducted as part of the Pipeline Project. Monitoring will be conducted daily during the hours of soil handling activities. It is anticipated that the particulate monitoring will be conducted for approximately 10 hours a day, from 7:00 a.m. to 5:00 p.m. Particulate monitoring will occur throughout the period of soil handling activities.

Particulate monitoring will be conducted using a MetOne E-BAM monitor or a MIE dataRAM real-time airborne particulate monitor, Model DR-4000 or Model pDR-1000, or equivalent. The MetOne E-BAM uses beta attenuation as a measurement technique. The mass of suspended particulate is measured by the decrease in the number of beta particles passed over

Ambient Air Monitoring Plan PCBs & Particulate Matter Soil Handling Activities as part of Pipeline Project Revised June 2012 Page 6 a particulate filtering medium due to absorption by the particulate. The E-BAM monitors have a measurement range of -0.005 to 65.530 mg/m3. The Model DR-4000 dataRAM monitor is equipped with a temperature conditioning heater and in-line impactor head in addition to a light scattering photometer to measure particulate concentrations with a mean diameter less than 10 micrometers (PM10). The Model pDR-1000 dataRAM monitor uses a passive sampling technique and light scattering photometer to determine particulate concentrations. These MIE monitors have a measurement range of 0.0001 to 400 mg/m3.

For all monitors, particulate data will be averaged and recorded for each 15-minute

interval during the sampling day by the instrument's datalogger. An overall daily average will be calculated and recorded by the instrument’s datalogger (if the instrument has the capability) or using a spreadsheet. The particulate monitoring results will be reported as PM10 (particulate matter with a mean diameter of 10 micrometers or less).

Calibrations and maintenance will be conducted at the frequency and in accordance with the procedures recommended by the manufacturer. All calibrations will be recorded.

The MIE Models 4000 and pDR-1000 monitors have an inherent sensitivity to moisture and readings taken under very high humidity conditions are unreliable. GE may, at times, use the professional engineering judgment of its environmental consultants to determine the reliability and usability of data collected during very high humidity conditions. Data summaries will exclude the time period when moisture is clearly a factor. The raw data file will be marked and maintained to indicate what data are included in the average.

Twelve preliminary monitoring locations have been identified as indicated on Figure 2-1. As noted in Section 3, for each (or each set of) discrete soil handling location(s), three to four specific monitoring locations have been identified. As required and at the discretion of Berkshire Environmental Consultants (BEC), GE, and the Soil Handling Contractor, additional monitors may be operated to adequately assess ambient particulate concentrations. The specific monitoring locations to be used on a given day will be established based on the following: location of soil handling activities, truck and vehicle traffic on-site, obstructions, accessibility, and receptors. As soil handling proceeds and conditions change during activities on the Pipeline Project, the monitoring locations may be moved. In addition to the twelve monitoring locations described above, an industrial background particulate monitor will be installed in the parking lot at the corner of Harvard Street and Tyler Street Extension (BK-4) on GE property in Pittsfield. Data from this station will be used in evaluating ambient particulate concentrations during the remediation. 6.0 QUALITY ASSURANCE AND QUALITY CONTROL PROCEDURES

Quality assurance and quality control (QA/QC) procedures for the air sampling program will follow those described in GE’s approved Field Sampling Plan/Quality Assurance Project Plan (FSP/QAPP), prepared by Blasland, Bouck & Lee, Inc., February 2006, with any subsequent modifications agreed upon by GE and EPA. Additional specific quality assurance and quality control for the monitors will be based on manufacturer's recommendations.

Ambient Air Monitoring Plan PCBs & Particulate Matter Soil Handling Activities as part of Pipeline Project Revised June 2012 Page 7 7.0 PCB SAMPLE DOCUMENTATION, HANDLING AND SHIPMENT

Each filter holder and PUF cartridge holder will be pre-marked with a permanent identification number. As each sample is collected, it will be recorded on a field data form along with the date, time and location of collection.

All samples will be securely wrapped for shipment. PCB samples will be preserved at 4oC and shipped on ice. Samples will be shipped under chain-of-custody by commercial overnight carrier or courier to the analytical laboratory. Complete details on the PCB sample shipment procedures are contained in the FSP/QAPP. 8.0 METEOROLOGICAL MONITORING

Hourly meteorological data from the Automated Surface Observation System (ASOS) Monitor operated at the Pittsfield Municipal Airport in Pittsfield, Massachusetts will be evaluated for each sampling period. A summary of the wind directional data for the sampling period will be included with the sampling results. This ASOS Monitor is operated by the National Weather Service, Federal Aviation Administration, and the Department of Defense. The ASOS Monitor measures and records wind speed, wind direction, precipitation, temperature, sky conditions, barometric pressure, and relative humidity. 9.0 DOCUMENTATION AND REPORTING

PCB and particulate data will be summarized and reported to the GE Project Manager and the ARCADIS Project Manager. If there is an exceedance of a reporting threshold, GE will be notified as soon as possible. All field and laboratory data recorded during ambient monitoring will be documented according to the procedures in the FSP/QAPP. A written report summarizing the results will be provided to GE and ARCADIS after the conclusion of sampling and will include the following:

Date and Time of Sampling Sampling Locations Calibration and Maintenance Activities Pollutants Monitored Number of Samples Collected Analytical Results Quality Assurance Assessment Meteorological Data Summary Discussion of Problems or Disruptions

Ambient Air Monitoring Plan PCBs & Particulate Matter Soil Handling Activities as part of Pipeline Project Revised June 2012 Page 8 10.0 NOTIFICATION AND ACTION LEVELS

10.1 PCBs

The notification and action levels for PCB concentrations in ambient air are 0.05

µg/m3 (24-hour average) and 0.1 µg/m3 (24-hour average), respectively. These are the same levels established by EPA for remediation activities at the GE-Pittsfield/Housatonic River Site.

If the 0.05 µg/m3 notification level is exceeded, GE will notify EPA as soon as

practical, but no later than 24 hours after receipt of the data showing such an exceedance, and will implement response actions, in consultation with EPA, to prevent exceedances of the action level. The actions to be considered in such circumstances will include those previously implemented by GE at other areas at the GE-Pittsfield/Housatonic River Site (e.g., increased frequency of monitoring, establishment of additional monitoring locations, increased use of dust suppression measures, modifications to dust-producing activities, and/or other appropriate response actions). In addition, GE will provide written notice of the exceedance to EPA within 72 hours following receipt of the data showing the exceedance.

If the action level of 0.1 µg/m3 is exceeded, GE will: (a) notify EPA immediately

of the exceedance within 24 hours after receipt of the data showing the exceedance; (b) temporarily cease ongoing soil handling activities; (c) discuss with EPA appropriate immediate or short-term response actions to address the exceedance; and (d) provide written notice of the exceedance to EPA within 72 hours following receipt of the data showing the exceedance. In addition, GE will evaluate the cause of the exceedance and the need for additional engineering controls, discuss that evaluation with EPA, and if warranted, propose to EPA appropriate engineering controls or other corrective actions. EPA approval of appropriate response actions and engineering controls, if proposed, will be required before GE resumes soil handling activities.

10.2 Particulate Matter

The notification and action levels for PM10 concentrations in ambient air are 120

µg/m3 (10-hour average) and 150 µg/m3 (10-hour average), respectively. These are the same levels established by EPA for remediation activities at the GE-Pittsfield/Housatonic River Site.

If the 10-hour average PM10 concentration at any non-background monitor

exceeds the notification level of 120 ug/m3, regardless of background levels, the exceedance will be reported to EPA as soon as practical, but no later than 24 hours following receipt of the data showing the exceedance. GE will take appropriate steps to prevent an exceedance of the action level and will discuss with EPA the need for and type of additional response actions. The actions to be considered will include those previously


implemented by GE at the other areas at the GE-Pittsfield/Housatonic River Site (e.g., increased frequency of monitoring, additional monitoring locations, increased use of dust suppression measures, modifications to dust-producing activities, and/or other appropriate response actions). In addition, GE will provide written notice of the exceedance to EPA within 72 hours following receipt of the data showing the exceedance.

If the 10-hour average PM10 concentration at any non-background monitor

exceeds the action level of 150 ug/m3, regardless of background level, GE will: (a) report such exceedance to EPA immediately within 24 hours following receipt of data showing the exceedance; (b) temporarily cease ongoing soil handling activities; (c) discuss with EPA appropriate immediate or short-term response actions to address the exceedance; and (d) provide written notice of the exceedance to EPA within 72 hours following receipt of the data showing the exceedance. In addition, GE will evaluate the cause of the exceedance and the need for additional engineering controls, discuss that evaluation with EPA, and propose to EPA appropriate engineering controls or other corrective actions. EPA approval of appropriate response actions and engineering controls, if proposed, will be required before GE resumes soil handling activities.

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AMBIENT AIR MONITORING STA110N LOCATIONS

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Attachment 3

PCB Soil Data and Figures – Existing Samples Located within 50-Foot Band along Pipelines

DateLocation ID Sample ID Collected Aroclor-1016 Aroclor-1221 Aroclor-1232 Aroclor-1242 Aroclor-1248 Aroclor-1254 Aroclor-1260 Total PCBs

ES1-6 ES10600.5 0-0.5 5/14/1996 ND(0.78) ND(1.6) ND(0.78) ND(0.78) ND(0.78) ND(0.78) 120 120ES106.502 0.5-2 10/9/1996 ND(4.0) ND(82) ND(4.0) ND(4.0) ND(4.0) ND(4.0) 970 970ES1060204 2-4 5/14/1996 ND(0.19) ND(0.38) ND(0.19) ND(0.19) ND(0.19) ND(0.19) 4.4 4.4ES1060406 4-6 5/14/1996 ND(0.038) ND(0.077) ND(0.038) ND(0.038) ND(0.038) ND(0.038) 0.033 P 0.033ES1060608 6-8 5/14/1996 ND(0.040) ND(0.080) ND(0.040) ND(0.040) ND(0.040) ND(0.040) 0.019 JP 0.019 JES1060810 8-10 5/14/1996 ND(0.040) ND(0.081) ND(0.040) ND(0.040) ND(0.040) ND(0.040) 0.019 JP 0.019 J

ES1-11 ES1110002 0-2 5/13/1996 ND(0.038) ND(0.077) ND(0.038) ND(0.038) ND(0.038) ND(0.038) 1.7 1.7ES1110204 2-4 5/13/1996 ND(0.038) ND(0.078) ND(0.038) ND(0.038) ND(0.038) ND(0.038) 2.3 2.3ES1110406 4-6 5/13/1996 ND(0.038) ND(0.076) ND(0.038) ND(0.038) ND(0.038) ND(0.038) 0.015 JP 0.015 JES1110810 8-10 5/13/1996 ND(0.038) ND(0.076) ND(0.038) ND(0.038) ND(0.038) ND(0.038) 0.12 0.12

ES1-27 ES127.502 0.5-2 5/6/1996 ND(0.036) ND(0.073) ND(0.036) ND(0.036) ND(0.036) ND(0.036) 2.5 2.5ES12700.5 0-0.5 5/6/1996 ND(0.037) ND(0.074) ND(0.037) ND(0.037) ND(0.037) ND(0.037) 0.62 0.62ES1270204 2-4 5/6/1996 ND(0.038) ND(0.076) ND(0.038) ND(0.038) ND(0.038) ND(0.038) 0.62 0.62ES1270407 4-7 5/6/1996 ND(0.037) ND(0.075) ND(0.037) ND(0.037) ND(0.037) ND(0.037) 1.2 1.2ES1270710 7-10 5/6/1996 ND(0.036) ND(0.073) ND(0.036) ND(0.036) ND(0.036) ND(0.036) ND(0.036) ND(0.073)ES1271013 10-13 5/6/1996 ND(0.038) [ND(0.039)] ND(0.077) [ND(0.078)] ND(0.038) [ND(0.039)] ND(0.038) [ND(0.039)] ND(0.038) [ND(0.039)] ND(0.038) [ND(0.039)] ND(0.038) [ND(0.039)] ND(0.077) [ND(0.078)]ES1271316 13-16 5/6/1996 ND(0.037) ND(0.076) ND(0.037) ND(0.037) ND(0.037) ND(0.037) ND(0.037) ND(0.076)

GEI222 GEI222:0.5-2 0.5-2 10/13/1994 ND(0.19) ND(0.19) ND(0.19) ND(0.19) ND(0.19) ND(0.19) 5.1 5.1GEI222:14-16 14-16 10/14/1994 ND(0.037) ND(0.037) ND(0.037) ND(0.037) ND(0.037) ND(0.037) 0.16 0.16

GEI215 GEI215:0-2 0-2 10/14/1994 ND(0.74) ND(0.74) ND(0.74) ND(0.74) ND(0.74) ND(0.74) 29 29PS-W-74 PS-W-74A 0-2 8/1/1989 NR NR NR NR NR NR NR ND(0.050)

PS-W-74B 2-6 8/1/1989 NR NR NR NR NR NR NR ND(0.050)PS-W-74C 6-10 8/1/1989 NR NR NR NR NR NR NR ND(0.050)PS-W-74D 10-14 8/1/1989 NR NR NR NR NR NR NR ND(0.050)

PS-W-78 PS-W-78A 0-2 8/1/1989 NR NR NR NR NR NR NR 0.57PS-W-78B 2-6 8/1/1989 NR NR NR NR NR NR NR 0.13PS-W-78C 6-10 8/1/1989 NR NR NR NR NR NR NR 0.16

PS-W-79 PS-W-79B 4-6 8/1/1989 NR NR NR NR NR NR NR 0.22PS-W-79C 6-10 8/1/1989 NR NR NR NR NR NR NR 4.6


PS-W-81 PS-W-81A 0-2 8/1/1989 NR NR NR NR NR NR NR 7.0PS-W-81B 2-8 8/1/1989 NR NR NR NR NR NR NR 0.89PS-W-81C 8-10 8/1/1989 NR NR NR NR NR NR NR ND(0.050)

PS-W-82 PS-W-82A 2-4 8/1/1989 NR NR NR NR NR NR NR 1.7PS-W-82B 4-8 8/1/1989 NR NR NR NR NR NR NR 0.68PS-W-82C 8-10 8/1/1989 NR NR NR NR NR NR NR ND(0.050)

PS-W-83 PS-W-83B 2-6 8/1/1989 NR NR NR NR NR NR NR 0.60PS-W-83C 6-10 8/1/1989 NR NR NR NR NR NR NR ND(0.050)






PS-W-89 PS-W-89A 0-2 8/1/1989 NR NR NR NR NR NR NR 30PS-W-89B 2-6 8/1/1989 NR NR NR NR NR NR NR 4.2PS-W-89C 6-10 8/1/1989 NR NR NR NR NR NR NR 1.0


PS-W-95 PS-W-95A 0-2 8/1/1989 NR NR NR NR NR NR NR 1500PS-W-95B 2-6 8/1/1989 NR NR NR NR NR NR NR 200

TABLE 1

Depth(Feet)

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

EAST STREET AREA 2 - NORTH

PCB SOIL SAMPLING DATA

G:\GE\GE_Pittsfield_Other-Misc\Reports and Presentations\Pipeline\FinalPlan\1411211324Atta 3_Soil Sample Tables.xls - Table 1 Page 1 of 2 7/16/2012

TABLE 1


EAST STREET AREA 2 - NORTH



PS-W-95C 6-10 8/1/1989 NR NR NR NR NR NR NR 32PS-W-96 PS-W-96A 0-2 8/1/1989 NR NR NR NR NR NR NR 540

PS-W-96B 2-6 8/1/1989 NR NR NR NR NR NR NR 36PS-W-96C 6-10 8/1/1989 NR NR NR NR NR NR NR 110


PS-W-98 PS-W-98A 0-2 8/1/1989 NR NR NR NR NR NR NR 8.6PS-W-98B 2-6 8/1/1989 NR NR NR NR NR NR NR 0.11PS-W-98C 6-10 8/1/1989 NR NR NR NR NR NR NR 0.21PS-W-98D 10-14 8/1/1989 NR NR NR NR NR NR NR 0.060

RAA5-C33 RAA5-C33 0-1 3/5/2004 ND(0.040) ND(0.040) ND(0.040) ND(0.040) ND(0.040) 0.66 0.90 1.561-6 3/5/2004 ND(0.039) ND(0.039) ND(0.039) ND(0.039) ND(0.039) 0.045 0.051 0.096

6-15 3/5/2004 ND(0.040) ND(0.040) ND(0.040) ND(0.040) ND(0.040) ND(0.040) ND(0.040) ND(0.040)RAA5-E34 RAA5-E34 0-1 3/3/2004 ND(0.38) ND(0.38) ND(0.38) ND(0.38) ND(0.38) 8.8 5.1 13.9

1-6 3/3/2004 ND(0.036) ND(0.036) ND(0.036) ND(0.036) ND(0.036) 0.19 0.088 0.2786-15 3/3/2004 ND(0.039) ND(0.039) ND(0.039) ND(0.039) ND(0.039) 0.020 J ND(0.039) 0.020 J

RAA5-F34 RAA5-F34 0-1 3/3/2004 ND(0.19) ND(0.19) ND(0.19) ND(0.19) ND(0.19) 2.1 1.6 3.71-6 3/3/2004 ND(0.037) [ND(0.037)] ND(0.037) [ND(0.037)] ND(0.037) [ND(0.037)] ND(0.037) [ND(0.037)] ND(0.037) [ND(0.037)] 0.048 [0.090] 0.032 J [0.058] 0.080 [0.148]

6-15 3/3/2004 ND(0.041) ND(0.041) ND(0.041) ND(0.041) ND(0.041) 0.068 0.041 0.109RAA5-G28 RAA5-G28 6-15 1/26/2004 ND(0.038) ND(0.038) ND(0.038) ND(0.038) ND(0.038) ND(0.038) ND(0.038) ND(0.038)RAA5-G34 RAA5-G34 6-15 3/3/2004 ND(4.0) ND(4.0) ND(4.0) ND(4.0) ND(4.0) 49 21 70RAA5-H24 RAA5-H24 6-15 2/24/2004 ND(0.038) ND(0.038) ND(0.038) ND(0.038) ND(0.038) ND(0.038) ND(0.038) ND(0.038)RAA5-H25 RAA5-H25 0-1 12/9/2004 ND(0.037) ND(0.037) ND(0.037) ND(0.037) ND(0.037) 0.90 1.1 2.0

1-6 12/9/2004 ND(0.038) ND(0.038) ND(0.038) ND(0.038) ND(0.038) ND(0.038) 0.014 J 0.014 JRAA5-H26 RAA5-H26 0-1 2/24/2004 ND(0.19) ND(0.19) ND(0.19) ND(0.19) ND(0.19) 1.9 2.4 4.3

1-6 2/24/2004 ND(0.037) ND(0.037) ND(0.037) ND(0.037) ND(0.037) 0.047 0.039 0.0866-15 2/24/2004 ND(0.038) ND(0.038) ND(0.038) ND(0.038) ND(0.038) ND(0.038) ND(0.038) ND(0.038)

RAA5-H28 RAA5-H28 0-1 3/2/2004 ND(0.41) ND(0.41) ND(0.41) ND(0.41) ND(0.41) 3.2 5.0 8.21-6 3/2/2004 ND(0.037) ND(0.037) ND(0.037) ND(0.037) ND(0.037) 0.20 0.20 0.40

6-15 3/2/2004 ND(0.037) ND(0.037) ND(0.037) ND(0.037) ND(0.037) 0.087 0.085 0.172RAA5-H34 RAA5-H34 0-1 3/3/2004 ND(0.19) ND(0.19) ND(0.19) ND(0.19) ND(0.19) 2.1 1.5 3.6

1-6 3/3/2004 ND(0.18) ND(0.18) ND(0.18) ND(0.18) ND(0.18) 2.3 3.1 5.46-15 3/3/2004 ND(0.039) ND(0.039) ND(0.039) ND(0.039) ND(0.039) 0.55 1.1 1.65

RAA5-I23 RAA5-I23 0-1 2/23/2004 ND(0.19) ND(0.19) ND(0.19) ND(0.19) ND(0.19) 2.1 1.6 3.71-6 2/23/2004 ND(19) ND(19) ND(19) ND(19) ND(19) 180 ND(19) 180

6-15 2/23/2004 ND(0.038) ND(0.038) ND(0.038) ND(0.038) ND(0.038) 0.12 ND(0.038) 0.12RAA5-I27 RAA5-I27 1-6 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)

6-15 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)

Notes:1. Samples were collected by ARCADIS and were submitted to CompuChem Environmental Corporation, National Environmental Testing and SGS Environmental Services, Inc. for analysis of PCBs. 2. Data Types: PDI = GE Pre-Design Investigation soil sampling; Historical = GE Historical soil sampling.3. PDI Samples have been validated as per GE's EPA-approved FSP, General Electric Company, Pittsfield, Massachusetts, ARCADIS.4. NA - Not Analyzed - Laboratory did not report results for this analyte.5. ND - Analyte was not detected. The number in parenthesis is the associated detection limit.6. NR - Not Reported. Total PCB data was entered from summary data tables and not the laboratory report form.7. Field duplicate sample results are presented in brackets.8. Shading indicates that value exceeds 50 ppm.

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

Depth(Feet)



DRA-SB-1 OPCA-SW-DRA-SB-1 0-1 6/2/2000 ND(0.039) ND(0.039) ND(0.039) ND(0.039) ND(0.039) ND(0.039) 0.069 0.0691-3 6/2/2000 ND(0.037) ND(0.037) ND(0.037) ND(0.037) ND(0.037) ND(0.037) 0.024 J 0.024 J3-5 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)5-7 6/2/2000 ND(0.039) [ND(0.040)] ND(0.039) [ND(0.040)] ND(0.039) [ND(0.040)] ND(0.039) [ND(0.040)] ND(0.039) [ND(0.040)] ND(0.039) [ND(0.040)] 0.85 [0.42] 0.85 [0.42]

DRA-SB-2 OPCA-SW-DRA-SB-2 0-1 6/2/2000 ND(0.036) ND(0.036) ND(0.036) ND(0.036) ND(0.036) ND(0.036) 0.13 0.131-3 6/2/2000 ND(0.039) ND(0.039) ND(0.039) ND(0.039) ND(0.039) ND(0.039) 0.36 0.363-5 6/2/2000 ND(0.038) ND(0.038) ND(0.038) ND(0.038) ND(0.038) ND(0.038) 0.41 0.415-7 6/2/2000 ND(0.038) ND(0.038) ND(0.038) ND(0.038) ND(0.038) ND(0.038) 0.12 0.12

DRA-SB-3 OPCA-SW-DRA-SB-3 0-2 5/30/2000 ND(0.038) [ND(0.040)] ND(0.038) [ND(0.040)] ND(0.038) [ND(0.040)] ND(0.038) [ND(0.040)] ND(0.038) [ND(0.040)] ND(0.038) [ND(0.040)] 0.050 [0.056] 0.050 [0.056]DRA-SB-4 OPCA-SW-DRA-SB-4 0-2 5/30/2000 ND(0.041) ND(0.041) ND(0.041) ND(0.041) ND(0.041) ND(0.041) 0.058 0.058DRA-SB-5 OPCA-SW-DRA-SB-5 0-2 5/30/2000 ND(0.040) ND(0.040) ND(0.040) ND(0.040) ND(0.040) ND(0.040) 1.4 1.4

2-4 5/30/2000 ND(0.037) ND(0.037) ND(0.037) ND(0.037) ND(0.037) ND(0.037) ND(0.037) ND(0.037)DRA-SB-6 OPCA-SW-DRA-SB-6 0-2 5/30/2000 ND(0.040) ND(0.040) ND(0.040) ND(0.040) ND(0.040) ND(0.040) 0.20 0.20



1-3 5/30/2000 ND(0.039) ND(0.039) ND(0.039) ND(0.039) ND(0.039) ND(0.039) 0.098 0.098DRA-SB-9 OPCA-SW-DRA-SB-9 0-2 5/30/2000 ND(0.039) ND(0.039) ND(0.039) ND(0.039) ND(0.039) ND(0.039) 0.021 J 0.021 J

2-4 5/30/2000 ND(0.035) [ND(0.038)] ND(0.035) [ND(0.038)] ND(0.035) [ND(0.038)] ND(0.035) [ND(0.038)] ND(0.035) [ND(0.038)] ND(0.035) [ND(0.038)] ND(0.035) [ND(0.038)] ND(0.035) [ND(0.038)]DRA-SB-10 OPCA-SW-DRA-SB-10 0-2 5/30/2000 ND(0.039) ND(0.039) ND(0.039) ND(0.039) ND(0.039) ND(0.039) 0.042 0.042

2-4 5/30/2000 ND(0.037) ND(0.037) ND(0.037) ND(0.037) ND(0.037) ND(0.037) ND(0.037) ND(0.037)DRA-SB-11 OPCA-SW-DRA-SB-11 0-2 5/30/2000 ND(0.040) ND(0.040) ND(0.040) ND(0.040) ND(0.040) ND(0.040) 0.033 J 0.033 J


1-3 5/30/2000 ND(0.038) ND(0.038) ND(0.038) ND(0.038) ND(0.038) ND(0.038) ND(0.038) ND(0.038)H78B-21 H21B00.5 0-0.5 7/19/1996 ND(0.038) ND(0.078) ND(0.038) ND(0.038) ND(0.038) ND(0.038) 0.22 0.22

H21B0.502 0.5-2 7/19/1996 ND(0.037) [ND(0.038)] ND(0.075) [ND(0.077)] ND(0.037) [ND(0.038)] ND(0.037) [ND(0.038)] ND(0.037) [ND(0.038)] ND(0.037) [ND(0.038)] 0.014 JP [0.024 JP] 0.014 J [0.024 J]H21B0204 2-4 7/19/1996 ND(0.037) ND(0.075) ND(0.037) ND(0.037) ND(0.037) ND(0.037) 0.018 JP 0.018 JH21B0406 4-6 7/19/1996 ND(0.038) ND(0.077) ND(0.038) ND(0.038) ND(0.038) ND(0.038) 0.73 0.73H21B0608 6-8 7/19/1996 ND(0.038) ND(0.076) ND(0.038) ND(0.038) ND(0.038) ND(0.038) 0.59 0.59H21B0810 8-10 7/19/1996 ND(0.038) ND(0.077) ND(0.038) ND(0.038) ND(0.038) ND(0.038) ND(0.038) ND(0.077)H21B1012 10-12 7/19/1996 ND(0.039) ND(0.079) ND(0.039) ND(0.039) ND(0.039) ND(0.039) ND(0.039) ND(0.079)H21B1214 12-14 7/19/1996 ND(0.038) ND(0.078) ND(0.038) ND(0.038) ND(0.038) ND(0.038) ND(0.038) ND(0.078)

OPCA-1 OPCA-1 0-1 5/26/1999 ND(0.043) ND(0.043) ND(0.043) ND(0.043) ND(0.043) ND(0.043) ND(0.043) ND(0.043)1-6 5/26/1999 ND(0.039) ND(0.039) ND(0.039) ND(0.039) ND(0.039) ND(0.039) 0.093 0.093

6-15 5/26/1999 ND(0.038) ND(0.038) ND(0.038) ND(0.038) ND(0.038) ND(0.038) 0.045 0.045OPCA-SB-17 OPCA-SB-17 0-1 5/11/2007 ND(0.034) ND(0.034) ND(0.034) ND(0.034) ND(0.034) ND(0.034) 0.021 J 0.021 J

1-6 5/11/2007 ND(0.034) ND(0.034) ND(0.034) ND(0.034) ND(0.034) ND(0.034) ND(0.034) ND(0.034)6-15 5/11/2007 ND(0.037) ND(0.037) ND(0.037) ND(0.037) ND(0.037) ND(0.037) ND(0.037) ND(0.037)


OPCA-SB-18 OPCA-SB-18 0-1 5/15/2007 ND(0.038) ND(0.038) ND(0.038) ND(0.038) ND(0.038) ND(0.038) 0.044 0.0441-6 5/15/2007 ND(0.035) ND(0.035) ND(0.035) ND(0.035) ND(0.035) ND(0.035) ND(0.035) ND(0.035)

6-15 5/15/2007 ND(0.032) ND(0.032) ND(0.032) ND(0.032) ND(0.032) ND(0.032) ND(0.032) ND(0.032)15-20 5/15/2007 ND(0.036) ND(0.036) ND(0.036) ND(0.036) ND(0.036) ND(0.036) ND(0.036) ND(0.036)20-25 5/15/2007 ND(0.034) ND(0.034) ND(0.034) ND(0.034) ND(0.034) ND(0.034) ND(0.034) ND(0.034)

OPCA-SB-22 OPCA-SB-22 0-1 5/16/2007 ND(0.036) ND(0.036) ND(0.036) ND(0.036) ND(0.036) ND(0.036) 0.26 0.261-6 5/16/2007 ND(0.035) ND(0.035) ND(0.035) ND(0.035) ND(0.035) ND(0.035) 0.23 0.23


RAA9-A14 RAA9-A14 0-1 6/6/2007 ND(0.036) ND(0.036) ND(0.036) ND(0.036) ND(0.036) ND(0.036) 0.010 J 0.010 J1-6 6/6/2007 ND(0.035) [ND(0.035)] ND(0.035) [ND(0.035)] ND(0.035) [ND(0.035)] ND(0.035) [ND(0.035)] ND(0.035) [ND(0.035)] ND(0.035) [ND(0.035)] 0.0046 J [0.0097 J] 0.0046 J [0.0097 J]

6-15 6/6/2007 ND(0.38) ND(0.38) ND(0.38) ND(0.38) ND(0.38) ND(0.38) 0.59 0.59

TABLE 2

Depth(Feet)


HILL 78 AREA-REMAINDER



TABLE 2





RAA9-B12 RAA9-B12 0-1 6/21/2006 ND(0.035) ND(0.035) ND(0.035) ND(0.035) ND(0.035) ND(0.035) 0.030 J 0.030 J1-6 6/21/2006 R R R R R R R R1-6 2/15/2007 ND(0.034) ND(0.034) ND(0.034) ND(0.034) ND(0.034) ND(0.034) ND(0.034) ND(0.034)

6-15 6/21/2006 R R R R R R R R6-15 2/15/2007 ND(0.035) ND(0.035) ND(0.035) ND(0.035) ND(0.035) ND(0.035) 0.11 0.11

RAA9-C10 RAA9-C10 1-6 6/21/2006 ND(0.035) ND(0.035) ND(0.035) ND(0.035) ND(0.035) ND(0.035) 0.18 0.186-15 6/21/2006 R R R R R R R R6-15 2/14/2007 ND(0.038) ND(0.038) ND(0.038) ND(0.038) ND(0.038) ND(0.038) ND(0.038) ND(0.038)

RAA9-D8 RAA9-D8 6-15 6/21/2006 ND(0.034) ND(0.034) ND(0.034) ND(0.034) ND(0.034) ND(0.034) 0.23 0.23RAA9-D9 RAA9-D9 0-1 6/7/2007 ND(0.044) ND(0.044) ND(0.044) ND(0.044) ND(0.044) 0.13 0.65 0.78

1-6 6/7/2007 ND(0.037) ND(0.037) ND(0.037) ND(0.037) ND(0.037) ND(0.037) 0.048 0.0486-15 6/7/2007 ND(0.039) ND(0.039) ND(0.039) ND(0.039) ND(0.039) ND(0.039) ND(0.039) ND(0.039)

RAA9-E6 RAA9-E6 0-1 6/22/2006 ND(0.033) [ND(0.034)] ND(0.033) [ND(0.034)] ND(0.033) [ND(0.034)] ND(0.033) [ND(0.034)] ND(0.033) [ND(0.034)] ND(0.033) [ND(0.034)] ND(0.033) [ND(0.034)] ND(0.033) [ND(0.034)]1-6 6/22/2006 ND(0.032) ND(0.032) ND(0.032) ND(0.032) ND(0.032) ND(0.032) ND(0.032) ND(0.032)

6-15 6/22/2006 ND(0.035) ND(0.035) ND(0.035) ND(0.035) ND(0.035) ND(0.035) ND(0.035) ND(0.035)RAA9-E7 RAA9-E7 0-1 1/5/2005 ND(0.040) ND(0.040) ND(0.040) ND(0.040) ND(0.040) 0.14 0.54 0.68


RAA9-F5 RAA9-F5 0-1 10/25/2004 ND(0.040) ND(0.040) ND(0.040) ND(0.040) ND(0.040) 0.014 J 0.026 J 0.040 J1-6 10/25/2004 ND(0.036) ND(0.036) ND(0.036) ND(0.036) 0.085 ND(0.036) ND(0.036) 0.085

6-15 10/25/2004 ND(0.038) ND(0.038) ND(0.038) ND(0.038) 0.20 ND(0.038) ND(0.038) 0.20RAA9-F6 RAA9-F6 0-1 1/4/2005 ND(0.039) ND(0.039) ND(0.039) ND(0.039) ND(0.039) ND(0.039) 0.75 0.75


RAA9-G3 RAA9-G3 0-1 1/5/2005 ND(0.045) ND(0.045) ND(0.045) ND(0.045) ND(0.045) 0.033 J 0.092 0.1251-6 1/5/2005 ND(0.039) [ND(0.039)] ND(0.039) [ND(0.039)] ND(0.039) [ND(0.039)] ND(0.039) [ND(0.039)] ND(0.039) [ND(0.039)] ND(0.039) [ND(0.039)] ND(0.039) [ND(0.039)] ND(0.039) [ND(0.039)]

6-15 1/5/2005 ND(0.039) ND(0.039) ND(0.039) ND(0.039) ND(0.039) ND(0.039) ND(0.039) ND(0.039)RAA9-G4 RAA9-G4 0-1 1/5/2005 ND(0.039) ND(0.039) ND(0.039) ND(0.039) ND(0.039) ND(0.039) ND(0.039) ND(0.039)

1-6 1/5/2005 ND(0.036) ND(0.036) ND(0.036) ND(0.036) ND(0.036) 0.016 J 0.042 0.0586-15 1/5/2005 ND(0.037) ND(0.037) ND(0.037) ND(0.037) ND(0.037) ND(0.037) ND(0.037) ND(0.037)

RAA9-G5 RAA9-G5 0-1 10/22/2004 ND(0.039) ND(0.039) ND(0.039) ND(0.039) ND(0.039) ND(0.039) 0.049 0.0491-6 10/22/2004 ND(0.037) ND(0.037) ND(0.037) ND(0.037) ND(0.037) ND(0.037) ND(0.037) ND(0.037)

6-15 10/22/2004 ND(0.038) ND(0.038) ND(0.038) ND(0.038) ND(0.038) ND(0.038) ND(0.038) ND(0.038)RAA9-H2 RAA9-H2 0-1 1/5/2005 ND(0.038) ND(0.038) ND(0.038) ND(0.038) ND(0.038) ND(0.038) 0.041 0.041


RAA9-H3 RAA9-H3 0-1 10/20/2004 ND(0.041) ND(0.041) ND(0.041) ND(0.041) ND(0.041) ND(0.041) 0.041 J 0.041 J1-6 10/20/2004 ND(0.038) ND(0.038) ND(0.038) ND(0.038) ND(0.038) ND(0.038) ND(0.038) ND(0.038)

6-15 10/20/2004 ND(0.036) ND(0.036) ND(0.036) ND(0.036) ND(0.036) ND(0.036) ND(0.036) ND(0.036)RAA9-I2 RAA9-I2 0-1 1/4/2005 ND(0.039) ND(0.039) ND(0.039) ND(0.039) ND(0.039) 0.56 0.46 1.02

1-6 1/4/2005 ND(0.039) ND(0.039) ND(0.039) ND(0.039) ND(0.039) 0.14 0.13 0.276-15 1/4/2005 ND(0.041) ND(0.041) ND(0.041) ND(0.041) ND(0.041) ND(0.041) ND(0.041) ND(0.041)

RAA9-K3 RAA9-K3 0-1 1/4/2005 ND(0.18) ND(0.18) ND(0.18) ND(0.18) ND(0.18) 2.2 5.1 7.31-6 1/4/2005 ND(0.037) ND(0.037) ND(0.037) ND(0.037) ND(0.037) ND(0.037) ND(0.037) ND(0.037)

RAA9-M4 RAA9-M4 0-1 1/4/2005 ND(0.040) ND(0.040) ND(0.040) ND(0.040) ND(0.040) 0.49 0.76 1.251-6 1/4/2005 ND(0.040) ND(0.040) ND(0.040) ND(0.040) ND(0.040) 0.093 0.14 0.233

6-15 1/4/2005 ND(0.039) ND(0.039) ND(0.039) ND(0.039) ND(0.039) ND(0.039) ND(0.039) ND(0.039)

Depth(Feet)


TABLE 2




Notes:1. Samples were collected by ARCADIS and were submitted to CompuChem Environmental Corporation and SGS Environmental Services, Inc. for analysis of PCBs. 2. Data Types: PDI = GE Pre-Design Investigation soil sampling; Historical = GE Historical soil sampling.3. PDI Samples have been validated as per GE's EPA-approved FSP, General Electric Company, Pittsfield, Massachusetts, ARCADIS.4. ND - Analyte was not detected. The number in parenthesis is the associated detection limit.5. Field duplicate sample results are presented in brackets.

Data Qualifiers: J - Indicates that the associated numerical value is an estimated concentration. P - Greater than 25% difference between primary and confirmation column. R - Data was rejected due to a deficiency in the data generation process.



RAA10-N-KK5 RAA10-N-KK5 0-1 10/23/2003 ND(0.037) ND(0.037) ND(0.037) ND(0.037) ND(0.037) 0.27 0.26 0.531-6 10/23/2003 ND(0.038) ND(0.038) ND(0.038) ND(0.038) ND(0.038) ND(0.038) 0.029 J 0.029 J6-15 10/23/2003 ND(0.037) [ND(0.037)] ND(0.037) [ND(0.037)] ND(0.037) [ND(0.037)] ND(0.037) [ND(0.037)] ND(0.037) [ND(0.037)] ND(0.037) [ND(0.037)] ND(0.037) [ND(0.037)] ND(0.037) [ND(0.037)]

RAA10-W-A18 RAA10-W-A18 0-1 9/2/2003 ND(0.036) ND(0.036) ND(0.036) ND(0.036) ND(0.036) ND(0.036) 0.023 JP 0.023 J1-6 9/2/2003 ND(0.034) ND(0.034) ND(0.034) ND(0.034) ND(0.034) ND(0.034) ND(0.034) ND(0.034)6-15 9/2/2003 ND(0.034) ND(0.034) ND(0.034) ND(0.034) ND(0.034) ND(0.034) ND(0.034) ND(0.034)

RAA10-W-B17 RAA10-W-B17 0-1 9/3/2003 ND(0.033) J ND(0.033) J ND(0.033) J ND(0.033) J ND(0.033) J ND(0.033) J 0.076 J 0.076 J1-6 9/3/2003 ND(0.036) J [ND(0.035) J] ND(0.036) J [ND(0.035) J] ND(0.036) J [ND(0.035) J] ND(0.036) J [ND(0.035) J] ND(0.036) J [ND(0.035) J] ND(0.036) J [ND(0.035) J] ND(0.036) J [ND(0.035) J] ND(0.036) J [ND(0.035) J]6-15 9/3/2003 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) J

RAA10-W-C13 RAA10-W-C13 0-1 9/3/2003 ND(0.036) ND(0.036) ND(0.036) ND(0.036) ND(0.036) ND(0.036) ND(0.036) ND(0.036)1-6 9/3/2003 ND(0.034) ND(0.034) ND(0.034) ND(0.034) ND(0.034) ND(0.034) ND(0.034) ND(0.034)6-15 9/3/2003 ND(0.035) ND(0.035) ND(0.035) ND(0.035) ND(0.035) ND(0.035) ND(0.035) ND(0.035)

RAA10-W-C15 RAA10-W-C15 0-1 9/2/2003 ND(0.033) ND(0.033) ND(0.033) ND(0.033) ND(0.033) ND(0.033) ND(0.033) ND(0.033)1-6 9/2/2003 ND(0.032) ND(0.032) ND(0.032) ND(0.032) ND(0.032) ND(0.032) ND(0.032) ND(0.032)6-15 9/2/2003 ND(0.034) ND(0.034) ND(0.034) ND(0.034) ND(0.034) ND(0.034) ND(0.034) ND(0.034)

RAA10-W-D12 RAA10-W-D12 0-1 8/12/2003 ND(0.017) ND(0.022) ND(0.017) ND(0.011) ND(0.011) ND(0.011) 0.019 P 0.0191-6 8/12/2003 ND(0.039) ND(0.039) ND(0.039) ND(0.039) ND(0.039) ND(0.039) ND(0.039) ND(0.039)6-15 8/12/2003 ND(0.036) ND(0.036) ND(0.036) ND(0.036) ND(0.036) ND(0.036) ND(0.036) ND(0.036)

RAA10-W-E8 RAA10-W-E8 1-6 5/30/2003 ND(0.018) ND(0.018) ND(0.018) ND(0.018) ND(0.018) ND(0.018) ND(0.018) ND(0.018)6-11 5/30/2003 ND(0.035) ND(0.035) ND(0.035) ND(0.035) ND(0.035) ND(0.035) ND(0.035) ND(0.035)

RAA10-W-E9 RAA10-W-E9 0-1 5/30/2003 ND(0.017) ND(0.017) ND(0.017) ND(0.017) ND(0.017) ND(0.017) 0.027 0.0271-6 5/30/2003 ND(0.036) ND(0.036) ND(0.036) ND(0.036) ND(0.036) ND(0.036) ND(0.036) ND(0.036)6-10 5/30/2003 ND(0.018) ND(0.018) ND(0.018) ND(0.018) ND(0.018) ND(0.018) ND(0.018) ND(0.018)

RAA10-W-E10 RAA10-W-E10 0-1 8/12/2003 ND(0.036) ND(0.036) ND(0.036) ND(0.036) ND(0.036) ND(0.036) ND(0.036) ND(0.036)1-6 8/12/2003 ND(0.034) [ND(0.034)] ND(0.034) [ND(0.034)] ND(0.034) [ND(0.034)] ND(0.034) [ND(0.034)] ND(0.034) [ND(0.034)] ND(0.034) [ND(0.034)] ND(0.034) [ND(0.034)] ND(0.034) [ND(0.034)]

6-12.3 8/12/2003 ND(0.034) ND(0.034) ND(0.034) ND(0.034) ND(0.034) ND(0.034) ND(0.034) ND(0.034)RAA10-W-F6 RAA10-W-F6 0-1 3/5/2004 ND(0.38) ND(0.38) ND(0.38) ND(0.38) ND(0.38) ND(0.38) 8.3 8.3


RAA10-W-F6.5 RAA10-W-F6.5 0-1 3/6/2007 ND(0.042) ND(0.042) ND(0.042) ND(0.042) ND(0.042) ND(0.042) ND(0.042) ND(0.042)RAA10-W-G4 RAA10-W-G4 0-1 3/5/2004 ND(0.039) ND(0.039) ND(0.039) ND(0.039) ND(0.039) ND(0.039) ND(0.039) ND(0.039)


RAA10-W-G5 RAA10-W-G5 0-1 7/22/2008 ND(0.032) ND(0.032) ND(0.032) ND(0.032) ND(0.032) ND(0.032) 0.015 J 0.015 J1-6 7/22/2008 ND(0.034) ND(0.034) ND(0.034) ND(0.034) ND(0.034) ND(0.034) ND(0.034) ND(0.034)6-15 7/22/2008 ND(0.034) ND(0.034) ND(0.034) ND(0.034) ND(0.034) ND(0.034) ND(0.034) ND(0.034)

RAA10-W-H3 RAA10-W-H3 0-1 7/22/2008 ND(0.032) ND(0.032) ND(0.032) ND(0.032) ND(0.032) ND(0.032) 0.024 J 0.024 J1-6 7/22/2008 ND(0.036) ND(0.036) ND(0.036) ND(0.036) ND(0.036) ND(0.036) ND(0.036) ND(0.036)6-15 7/22/2008 ND(0.031) ND(0.031) ND(0.031) ND(0.031) ND(0.031) ND(0.031) ND(0.031) ND(0.031)

RAA10-W-H4 RAA10-W-H4 0-1 3/8/2004 ND(0.037) ND(0.037) ND(0.037) ND(0.037) ND(0.037) ND(0.037) ND(0.037) ND(0.037)1-6 3/8/2004 ND(0.037) ND(0.037) ND(0.037) ND(0.037) ND(0.037) ND(0.037) ND(0.037) ND(0.037)6-15 3/8/2004 ND(0.039) ND(0.039) ND(0.039) ND(0.039) ND(0.039) ND(0.039) ND(0.039) ND(0.039)

RAA10-W-I2 RAA10-W-I2 0-1 3/5/2004 ND(0.038) ND(0.038) ND(0.038) ND(0.038) ND(0.038) ND(0.038) 0.27 0.271-6 3/5/2004 ND(0.038) ND(0.038) ND(0.038) ND(0.038) ND(0.038) ND(0.038) 0.016 J 0.016 J6-15 3/5/2004 ND(0.038) ND(0.038) ND(0.038) ND(0.038) ND(0.038) ND(0.038) ND(0.038) ND(0.038)

RF-14 PG14B0002 0-2 6/10/1991 ND(0.050) NA ND(0.050) ND(0.050) ND(0.050) ND(0.060) v ND(0.050) ND(0.060)PG14B0204 2-4 6/10/1991 ND(0.050) NA ND(0.050) ND(0.050) ND(0.050) ND(0.050) ND(0.050) ND(0.050)PG14B0406 4-6 6/10/1991 ND(0.050) NA ND(0.050) ND(0.050) ND(0.050) 0.090 0.060 0.15PG14B0608 6-8 6/10/1991 ND(0.050) NA ND(0.050) ND(0.050) ND(0.050) 0.060 ND(0.050) 0.060PG14B0810 8-10 6/10/1991 ND(0.050) NA ND(0.050) ND(0.050) ND(0.050) 0.22 0.070 0.29PG14B1012 10-12 6/10/1991 ND(0.020) ND(0.020) ND(0.020) ND(0.020) ND(0.020) 0.17 ND(0.020) 0.17PG14B1214 12-14 6/10/1991 ND(0.050) NA ND(0.050) ND(0.050) ND(0.050) ND(0.050) ND(0.050) ND(0.050)PG14B1416 14-16 6/10/1991 ND(0.050) NA ND(0.050) ND(0.050) ND(0.050) ND(0.050) ND(0.050) ND(0.050)

UB-SS-1 UB-SS-1 0-0.5 12/18/1996 ND(0.042) ND(0.085) ND(0.042) ND(0.042) ND(0.042) ND(0.042) 0.16 0.16

Depth(Feet)


UNKAMET BROOK AREA

PCB SOIL SAMPLING DATATABLE 3



UNKAMET BROOK AREA

PCB SOIL SAMPLING DATATABLE 3

Notes:1. Samples were collected by ARCADIS and were submitted to CompuChem Environmental Corporation, IT Analytical Services and SGS Environmental Services, Inc. for analysis of PCBs. 2. Data Types: PDI = GE Pre-Design Investigation soil sampling; Historical = GE Historical soil sampling3. PDI Samples have been validated as per GE's EPA-approved FSP, General Electric Company, Pittsfield, Massachusetts, ARCADIS4. NA - Not Analyzed - Laboratory did not report results for this analyte5. ND - Analyte was not detected. The number in parenthesis is the associated detection limit6. Field duplicate sample results are presented in brackets

Data Qualifiers: J - Indicates that the associated numerical value is an estimated concentration. P - Greater than 25% difference between primary and confirmation column. v - Indicates an elevated detection limit due to chemical interference.


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Documents

Re: GE-Pittsfield/Housatonic River Site · 2020-07-04 · Transmitted via Overnight Courier June 12, 2012 Mr. Dean Tagliaferro EPA Project Coordinator c/o Weston Solutions, Inc