This Sampling and Analysis Plan (SAP) has been prepared to address the sampling objectives associated with the remediation of the Bennett's Quarry site in Monroe County, Indiana. This SAP is supported by and intended to be used in conjunction with the Quality Assurance Project Plan, March 15, 1995 (QAPjP) for the Bloomington Sites, Volume I. Revision 4 (Final) of the QAPjP, dated April 29, 1999, has been submitted to the U.S. Environmental Protection Agency (USEPA) and the Indiana Department of Environmental Management (IDEM) for review and approval. Where appropriate, procedures included in this revised version have been referenced in this SAP. All of the work described in this SAP will be conducted in accordance with the applicable provisions of the QAPjP.

This SAP addresses post-excavation sampling, drum sampling, stockpile sampling, interim monitoring of wells and springs, wastewater sampling, and backfill sampling.

Bennett's Quarry is located approximately 2.5 miles northwest of Bloomington, Indiana, in the NE 1/4 of Section 30, T9N, R1W (see Figure 1 of the Remedial Action Work Plan). The site consists of two areas. The main area is approximately 3 acres in size and is bordered by the quarry access road to the east and south and by Stout's Creek to the west. The second area (hereafter referred to as the satellite area) comprises approximately 0.5 acre and is located approximately 100 ft east of the main area across the quarry access road. Both areas are secured at the perimeter by a 6-ft-high chain-link fence with barbed wire around the top.

The abandoned Monon Railroad tracks are located between the main site and Stout's Creek. The former rail line is generally overgrown with low brush and trees. The main site is covered by a clay cap believed to be approximately 16 to 22 in. thick. CBS maintains the cap, as well as the security fences. There is a large pile of old quarry rock located along the eastern edge of the site. Large quarry blocks are also present on the cap in two places to serve as cable anchors for quarry operations just west of the site. Within the perimeter of the main area are some large trees, particularly along the north and east ends of the site. Limited site clearing was performed in the wooded areas in December 1998 to facilitate a geophysics investigation.

The smaller satellite area is approximately 230 ft by 160 ft and is located some 50 ft south of a deep quarry excavation. The area is characterized by large piles of old quarry rubble and some large trees. Two large pieces of rusted quarry equipment are present in the northern and southern portions of the site.

The site is located within a former limestone quarrying area previously known as Bennett's Quarry. The quarry produced a finished building stone whose source was the Salem Limestone. The quarry was privately owned and operated by Mr. Edward Bennett until it was sold to Star Stone Company in 1987. In the 1960s, a portion of the quarry was reportedly used as a landfill for industrial wastes.

In May 1983, the USEPA and the Indiana State Board of Health conducted an inspection of the Bennett's Quarry site in response to a request by the Monroe County Board of Health. Capacitors containing PCBs that had originated from the Westinghouse plant in Bloomington were identified at the site. The inspection included the collection of nine soil, sediment, and water samples. The results showed that PCB contamination was present, and a removal action was initiated at the site by USEPA in June 1983.

The 1983 removal action consisted of the following activities:

• A total of 252 capacitors, which were visible on the ground surface, were removed and disposed of along with approximately 12 cubic yards of soil.

• A delineation sampling effort was conducted, including installation of 63 soil borings and the collection of soil samples at various depths across the site. This sampling effort is discussed in Section 3.1.

• Aerial photographs were taken and used to define the limits of the site.

• A geophysical survey was conducted to identify electromagnetic anomalies that could be associated with concentrations of buried metal.

• Seven test trenches and test pits were installed in areas determined by the geophysical study to contain concentrations of buried metal. Six of these trenches identified capacitors buried to a maximum depth of 3 to 5 ft.

• A cap was placed over a portion of the site. The cap was constructed of clay from a nearby borrow area on the Bennett's property and was measured at 16 to 22 in. thick. Additional clay was used to fill existing depressions at the site and to improve drainage.

• A 6-in. topsoil layer was placed over the cap and seeded.

• A 6-ft-high perimeter security fence was constructed, including three strands of barbed wire across the top.

• Two additional capacitors were removed in December 1983.

A second interim cleanup action was performed by Westinghouse in late 1987 and early 1988. This project included the extension of the clay cap at the perimeter of the main site, posting of warning signs, and removal of sediment from approximately 1600 ft of Stout's Creek. In addition, one capacitor was removed from the site.

CBS has been performing maintenance at the Bennett's Quarry site since 1985. Activities have included periodic site inspections, mowing and care for the clay cap, fence maintenance, and periodic groundwater sampling.

In December 1998, prior to mobilization to perform a geophysics survey, the site was cleared of undergrowth and small trees to facilitate the investigation and future remedial activities. The larger trees, particularly on the north end of the site, were left in place. Some of these trees predate the dumping operations, and it may be possible to complete the remediation without disturbing them. Limited clearing was also performed outside the fence to the east and northwest of the site due to the need for geophysics in these locations. The smaller satellite area was also partially cleared for geophysics.

Concurrent with the site clearing, a 50-ft by 50-ft grid system was established across the main fenced area. This grid system has been laid out to correspond as closely as possible with the

grids used during the 1983 sampling effort. The grid area encompasses the entire site within the fence line, including all of the known "buried metal" areas. In addition, grids were established south of the fence and east across the railroad tracks. Control points were installed along the perimeter of the area and at 100-ft intervals to mark the north-south and east-west coordinate lines of the new grid system. These control points were identified with wooden stakes and flagged. Coordinates were written in indelible ink on wooden slats inserted next to the stakes. This system will be used as the basis for identifying sample locations and excavation areas throughout the project.

The geology of Bennett's Quarry is characterized by a relatively thin layer of unconsolidated material overlying bedrock. The unconsolidated material at the site comprises fill material and indigenous soil. Fill materials range in depth to 13 ft and generally consist of black to brown clay, sand, and gravel with rubble, brick, glass, and porcelain. Materials consisting of a very compact gravel were encountered in the lidated material in the western portion of the site along the old railroad bed. This gravel fill ranged in thickness from 1.4 to 3 ft. Other fill materials comprising a mixture of clay, limestone, and coal were encountered along the southern boundary of the main fill area. The predominant soil encountered at the site is a yellow/red/brown stiff, silty clay that ranges in thickness from 1.6 to 4 ft. The site contains large surface and subsurface limestone quarry blocks, which were abandoned during quarrying operations.

Various investigations have been conducted at and in the vicinity of the Bennett's Quarry site since 1983. These include soil, sediment, surface water, and groundwater sampling efforts, two geophysical surveys, interpretations of aerial photography, soil boring and monitoring well installations, rock coring, water level monitoring, surveying, and hydraulic conductivity testing. This section addresses four of those prior investigations that have generated data at the site that are available for review and were useful in the development of the Remedial Action Work Plan. Additional information pertaining to the previous site activities is provided in Section 2.3 of the Remedial Action Work Plan.

The USEPA conducted an investigation and subsequent removal action at the Bennett's Quarry site between May and July 1983. This project included at least three soil investigations and a geophysical survey.

The first sampling effort included the collection of nine soil, pond sediment, creek sediment, and surface water samples. The soil and pond sediment samples were collected immediately adjacent to visible capacitors. Prior to the 1983 removal action, a shallow pond existed in the central portion of the site. The creek sediment and surface water samples were collected from Stout's Creek. Sediment was removed from the creek during the 1987 interim cleanup action.

The second investigation is documented in a report entitled "On Site Coordinator's Report, Immediate Removal Project 68-95-0076, Bennett's Quarry, Bloomington, Indiana," June 1983. According to this report, the investigation included the installation of 63 soil borings and the analysis of 166 samples for PCBs. Sampling was performed using a 50-ft by 50-ft grid system. The PCB soil analytical results from that effort, overlain on a current site map, are presented on Figure 1 of Appendix A of the Remedial Action Work Plan. Borings were installed to a maximum depth of 5.5 ft. although many of the borings encountered bedrock before reaching that depth. Samples were typically collected for analysis at 6-in. depth intervals from 0 to 0.5 ft. 2.0to 2.5ft, and 5.0 to 5.5 ft.

The third investigation involved the installation of seven test trenches and test pits. These were installed in locations identified by geophysics as containing concentrations of buried metal. Six of the seven trenches identified buried capacitors. The maximum depth of the capacitors was 3 ft below grade in five of the trenches. Capacitors were found to a depth of 5 ft below grade in the sixth location. The seventh trench, located at the northern end of the site, encountered metal building debris, but no capacitors or capacitor parts were identified.

As described above, a geophysical investigation was also conducted at this time. Based on the map of electromagnetic anomalies included in the OSC's report, all of the buried metal areas identified by that effort are encompassed by this sampling program.

In May 1984, CBS contracted Blasland and Bouck to install soil borings at the Bennett's Quarry site. This work was performed primarily to profile the soil stratigraphy at the site and to identify depth to bedrock.

In December 1998, CBS contracted with PSARA Technologies and a geophysical survey specialist, Geosphere Inc., to perform a geophysical survey. This investigation was performed to verify previous data, to address areas not included in previous geophysics, and to identify subsurface contours. The survey consisted of a combination of electromagnetic (EM) and magnetometer techniques, as well as a seismic refraction investigation. The EM survey was accomplished using an EM-3 1 instrument by collecting readings along north-south lines across the site with 5-ft spacing between lines. Readings were taken at 2.5-ft intervals along each line. A fluxgate magnetometer was used to collect magnetic data along the same north-south gridlines. The magnetic survey focused primarily on target areas identified during the EM-3 1 survey. The seismic refraction data was acquired along four lines selected from preliminary contour maps of the EM/magnetometer results. Figure 1 shows the location of these four lines.

The seismic refraction study conducted at the Bennett's Quarry site revealed the presence of two soil lithologic units in the overburden above the limestone bedrock beneath the site. The clay cap, which is known to have been placed over the majority of the site, is not identifiable as a distinct layer based on the results of the seismic study. The uppermost layer, therefore, includes the clay cap and an intermediate layer. The intermediate layer is consistent with a loosely compacted clayey soil and/or fill, and ranges in thickness from approximately 2 ft to a maximum of about 12 ft. The clay/intermediate layer is present at all seismic stations along all four lines.

Beneath the intermediate layer, an underlying clay layer was also discovered within the soil horizon. Seismic velocities of the underlying layer are higher than the clay cap/intermediate layer and are consistent with heterogeneous clay units with trash and debris intermixed. The underlying layer thickness varies from 0 ft (i.e., not present) to a maximum of nearly 15 ft.

The soil at the site is underlain by limestone bedrock. The surface of the limestone is highly irregular with two depressions in the bedrock surface: a linear depression at the southern end of the site, and a broad circular depression in the north-central portion of the site. The steep walls and apparent benching in the depression walls indicates that these depressions may be cultural in origin and likely the result of small-scale quarrying operations.

This section describes the procedures for locating and collecting the various types of samples required for this project. Sample logs, sample location maps, chain-of-custody forms, certificates of analysis, and excavation progress maps, where appropriate, will be maintained at the site for all different sample types and areas.

As described previously, a 50-ft by 50-ft grid system was established across the main fenced area. This grid system was laid out to correspond as closely as possible with the grids used during the 1983 sampling effort. The grid area encompasses the entire site within the fence line, including all of the known "buried metal" areas. In addition, grids were established south of the fence and east across the railroad tracks. Control points were installed along the perimeter of the area and at 100-ft intervals to mark the north-south and east-west coordinate lines of the grid system. These control points were identified with wooden stakes and flagged. Coordinates were written in indelible ink on wooden slats inserted next to the stakes. This system will be used as the basis for identifying sample locations and excavation areas.

The satellite area is an irregularly shaped area comprising approximately 0.5 acre. During delineation sampling, irregularly shaped grids were established across the satellite area to best conform with the topography and shape of the area. Each grid represents an approximately 2500 sq ft area. This system will be replicated for identifying sample locations and excavation areas within the satellite area.

Post-excavation verification sampling will be performed in each of the 50-ft by 50-ft grids within the limits of excavation, as well as any PCB grids identified during the pre-excavation delineation investigation described in the Preliminary Report of Delineation Sampling and Analysis and Addendum to Sampling and Analysis Plan (PSARA Technologies, May 19, 1999). This verification sampling will be performed to determine whether any residual PCBs exceeding the cleanup criterion remain in the underlying soil.

Each 50-ft by 50-ft grid will be visually subdivided into four smaller 25-ft by 25-ft subgrids (625-sq-ft areas within the satellite area). In addition, the smaller 25-ft by 25-ft grids used to define the areas around the 1983 USEPA borings, as well as the deep holes (see Figure 2), will be subdivided into four 12.5-ft by 12.5-ft subgrids for entire grids or into three 12.5-ft by 12.5-ft subgrids for the L-shaped grids bordering the deep holes. A sample will be collected from the approximate center of each subgrid at a depth interval of 0 to 6 in. and homogenized. Equal portions from each of the subgrid samples will be composited to create a representative grid sample. This sample will be submitted to the laboratory for PCB analysis as described in Section 6.0 of this SAP. The remaining portion of each subgrid sample will be retained for possible future analysis. All samples will be collected in accordance with Field Sampling Procedure FP16, which is included in Volume I, Appendix B. of the QAPjP.

If the laboratory result from the composite sample shows a PCB concentration less than 50 ppm, the grid will be considered verified. Further, the final composite result for each grid will be recorded, and the arithmetic average of all the final post-excavation PCB results to date will be calculated on a daily basis. The calculated average PCB concentration for all the excavated grids that have been determined to be clean must not exceed 25 ppm. Once these conditions are met in an applicable area, no further sampling or excavation will be done under this project.

If the laboratory result shows a PCB concentration greater than or equal to 50 ppm, there will be two options available to CBS. Under the first option, CBS may elect to remove an additional lift of soil (3 in. or greater) from the entire grid and repeat the post-excavation verification sampling procedure described previously. As a second option, CBS may elect to screen each of the archived subgrid samples individually to determine which subgrid(s) contains the elevated PCB concentration. Under this approach, only those subgrids found to contain PCBs greater than or equal to 50 ppm would be excavated. After an additional lift of soil has been removed from the identified subgrid(s), post-excavation verification sampling would be performed on each subgrid that was excavated, and the post-excavation subgrid samples would be used in creating a composite sample. For those subgrids not requiring excavation, aliquots from the archived samples would be used in eompositing. In this way, a new composite sample of the entire grid would be prepared for laboratory analysis using aliquots that represent the remaining soils in each subgrid.

At CBS's discretion, the above compositing procedure may be performed in grids smaller than 50-ft by 50-ft. If bedrock is encountered during excavation, the bedrock surface will be scraped clean of loose soil. However, no further sampling or excavation of the bedrock surface will be performed under this project.

Several drums have been observed at the surface in the vicinity of grids G7 and G8. These drums are crushed and do not contain appreciable material; they will be disposed with the TSCA-material. However, in the event that other drums containing appreciable materials are uncovered during excavation of PCB soils, the drums will be segregated visually by waste type (i.e., liquid or solid), composition (e.g., paints, oils, etc.), appearance, and physical properties. Samples will also be collected for chemical compatibility testing prior to waste characterization sampling of like materials. All phases of waste present in any intact or partially intact drum that is uncovered will be sampled. Drums that do not contain appreciable material will not be sampled and will be disposed with TSCA materials.

Drums will be sampled in a manner so as to retain, to the degree possible, the existing character of the waste. Multi-phase waste materials will be sampled as a unit to include all material phases present in the drum. Specific waste sampling methods will be determined in the field based on the condition of the drum, the accessibility of the waste material, and the physical properties of the waste being collected. Liquids will be collected using single-use glass drum thieves, bottle samplers, or other sampling equipment that will assure collection of a representative sample of all phases of material present in the container. Sludges will be collected using drum thieves, trowels, scoops, triers, or single-use wooden spatulas. Solid materials, such as rags or dried paint, will be collected using trowels, scoops, triers, single-use wooden spatulas, or tongs. Solid materials may require physical size reduction prior to placement in sample containers.

Following collection of samples from all waste-containing drums, materials will be grouped to represent a visually identifiable waste type, such as liquid solvents, solvent sludges, waste paints, paint sludges, oils, etc. Composite samples consisting of a volume-proportionate mixture of sample aliquots from each drum will be prepared for each waste group and submitted to an offsite analytical laboratory for waste characterization analysis. In addition, a second aliquot will be prepared from each composite and archived for potential future use.

All drum samples will be collected in accordance with Field Sampling Procedure FP-28, which is being added to Volume I, Appendix B. of the QAPjP.

Soils impacted by other contaminants associated with buried drums and other chemical wastes, including RCRA wastes, will be stockpiled on site in a separate material holding area for testing to determine disposal requirements.

These soil stockpiles will contain a maximum of 200 cu yd of material. A total of 20 to 40 grab samples will be collected from each stockpile and composited to create a representative stockpile sample. The method of sample collection will be determined in the field in cooperation with the government party representatives based on the manner in which the contractor forms the stockpile. For example, if the stockpile is placed as 10 separate truckload-sized piles, then two grabs will be taken from opposite sides of each truckload pile. A replicate (see Section 4.10) of each stockpile sample will also be prepared and submitted for PCB analysis.

Sampling will be performed in accordance with the stockpile sampling procedures outlined in Field Sampling Procedure FP-26, which is included in Volume I, Appendix B. of the QAPjP. The stockpile composite will be created by manually homogenizing the grab samples in a decontaminated stainless steel bowl and quartering the mixture. Large clumps of soil will be broken up into small pieces to ensure that the material is thoroughly mixed. Equal portions of the material from two opposite quarters of the bowl will be placed in the appropriate sample containers, labeled, and submitted as composite samples for laboratory analysis. Sample results will be available within 24 hours of sampling.

Prior to the start of excavation at the site and every 60 days after construction begins until the Long-Term Groundwater Monitoring Plan is approved by the government parties, CBS will collect and analyze water samples for PCBs from the following locations:

Springs - South line of seeps and north spring at culvert under tracks

Monitoring Wells - BD-6I, BD-6D, and BD-3

All groundwater samples will be collected in accordance with Field Sampling Procedure FP-3, which is included in Volume I, Appendix B. of the QAPjP. All purge water and decontamination fluids will be containerized and transferred to an onsite wastewater treatment system for treatment and disposal in accordance with Section 4.6. Purging and sampling activities will be recorded on a Groundwater Sampling Log for each well. Groundwater sampling data will be provided in the weekly project report.

A substantial quantity of wastewater may be generated during this project. This includes wastewater generated during the de-watering of excavation areas, collected stormwater that has been in contact with the waste, and accumulated decontamination water. This wastewater will be treated in an onsite wastewater treatment system. Effluent samples will be collected in accordance with Field Sampling Procedure FP-4 in Volume I, Appendix B. of the QAPjP and analyzed prior to discharge to Stout's Creek. Each batch of wastewater will be sampled and analyzed prior to discharge. Although the EPA discharge limit is 3.0 ppb, CBS, in this limited instance, will treat all water to a limit of 0.3 ug/L. or it will be retreated prior to batch discharge to Stout's Creek.

Backfill materials from the borrow area or that may be brought in by the remediation contractor will be analyzed for PCB content prior to delivery. If PCBs are detected in the materials at concentrations equal to or greater than I ppm, they will not be used for backfill at the site. A minimum of two samples will be collected from each backfill source. (Clay, soil, and topsoil will be tested; however, crushed stone or clean, washed gravel will not be sampled as they have minimal potential to contain PCBs.) Backfill will be sampled in accordance with the procedure

CBS will allow the USEPA or its authorized representative(s) to take split and/or duplicate samples of any samples collected by CBS or its contractors or agents. All QC samples will be handled as described in Volume I of the QAPjP.

Field personnel are responsible for the identification, preservation, packaging, handling, shipping, and storage of samples obtained in the field such that all samples can be readily identified and will retain, to the extent possible, in situ characteristics to be determined through analysis. All samples collected will be tracked by preparing and using a sample chain-of-custody form as described in Field Sampling Procedure FP-12 in Volume I, Appendix B. of the QAPj P.

Each sample, including QC samples, will be identified with a unique sample number. This number will provide easy identification of the sample in field logs, field data sheets, analytical reports, chain-of-custody forms, and project reports. Sample numbers will be assigned in accordance with the procedures in the Bloomington Project Data Management Program.

Upon collection, samples will be transferred directly into the appropriate sample container. Only precleaned sampling containers supplied by the laboratory will be used. All samples will be cooled to 4°C immediately upon collection and maintained at this temperature during sample shipment. Table I summarizes the types of samples to be collected, container types and sizes, preservatives, and sample holding times.

Samples will be labeled at the time of sample collection by affixing a self-stick label to the sample container. All sample labels will include the following information:

Project name and number

Unique sample identification number (see Section 5.1 )

Date and time the sample was collected

Initials of the sample collector

Sampling location and sample description

Table 1. Sampling and Analysis Requirements

Bennett's Quarry Post-excavation Verification Sampling

Monroe County, Indiana

Analytical

Sample Type Method Container Size Preservative Holding Time

All samples collected during this study will be properly labeled and packaged for shipment by overnight courier to the offsite laboratory. Glass containers will be secured in sturdy coolers to prevent breakage during transport. Ice in leak-proof bags will be placed in the coolers to preserve the samples at 4°C. Coolers will be secured with tape and labeled to ensure the samples are not disturbed during transportation. A chain-of-custody seal(s) will be attached so that any attempts at opening or tampering will result in a broken seal.

Sample chain of custody tracks the life of a sample from collection to analysis. A record of the sample custody will be maintained to establish and document sample possession during collection, shipment, laboratory receipt, and laboratory analysis. This documentation will be evidenced on a chain-of-custody record by the signatures of the individuals collecting, shipping, and receiving each sample. Procedures for sample handling, shipping, and transfer of custody are described in Section 5.0 of Volume I of the QAPjP.

A field sampling log book, as described in Field Sampling Procedure FP-1, will be initiated at the start of the first onsite sampling activity and maintained to record sampling activities throughout this remediation project. The field sampling log book is a controlled document that becomes part of the permanent site file. The log book will consist of a bound notebook with consecutively numbered pages that cannot be removed. All data entries will be recorded using a non-erasable ink pen.

The following items will be included in the daily entries in the field sample log book:

Date of activities

Arrival and departure of sampling personnel and observers

Field sample activities

Individual sample description (color, consistency, odor, etc.)

Sample pick-up, including chain-of-custody form number, carrier, date and time

Unusual events during sampling

Health and safety issues related to sampling

Weather conditions

Section 5.1.2 and Field Sampling Procedure FP-1 of Volume I of the QAPjP discuss field log book recordkeeping.

In addition to the field log book, data also will be recorded daily on spreadsheets and site maps for communication to the remediation contractor and onsite representatives.

Heritage Laboratories in Indianapolis, Indiana, and Antech Ltd in Export, Pennsylvania, have been selected as the analytical laboratories for this project. Samples will be submitted to the laboratory for analysis via hand delivery or overnight courier. The laboratory will transmit analytical results via facsimile within 24 hours of receipt, and original reports will be forwarded in the mail.

All samples will be analyzed for PCBs in accordance with EPA Method 8082 (SW-846) as presented in Table I of this SAP. Heritage Laboratories' Standard Operating Procedures (SOPs) for performing these analyses are included in Volume I, Appendix A, Laboratory Procedures, Revision 3, of the QAPjP. Antech's SOPs for performing these analyses are included in Volume 1, Appendix A, Laboratory Procedures, Revision 4, of the QAPjP.

Data validation begins with the laboratory analyst and continues until the data are reported. Individual analysts will verify the completion of the appropriate data forms to ensure the completeness and correctness of data acquisition and reduction. All in-laboratory data validation will be conducted in accordance with methods delineated in the USEPA's "Test Methods for Evaluating Solid Waste, Physical/Chemical Methods" (SW-846), and "Manual for Chemical Analysis of Water and Wastes" (EPA 600/4-79-020).

Additional data validation of analytical results will be performed by the sampling contractor. The data will be reviewed to ensure holding times are met, matrix spike recoveries are within acceptable ranges, and blank sample results do not exceed acceptable concentrations. If PCBs are detected in the blanks, the data will be evaluated on a case-by-case basis to assess the effect on the project objective. When determined to be necessary, corrective actions, such as reanalysis or resampling and analysis, will be evaluated and implemented.

The quality assurance (QA) objectives for precision, accuracy, representativeness, completeness, and comparability of the data for this project are specified in the QAPjP. Data validation will be performed in accordance with the QAPjP on laboratory analytical data that show PCB soils at concentrations less than the appropriate cleanup criterion.

Field data will be recorded on the appropriate field record form or in a bound field sample log book. All field data will be verified and reviewed by the Field Sampling Manager.

All results will be reported by the laboratory to the Field Sampling Manager or his designee by sample batch and will be certified by the laboratory. Preliminary results will be forwarded by facsimile. Data turnaround time is 24 hours following laboratory receipt of samples. All reports and documentation required, including quality control (QC) results, will be clearly labeled with the laboratory sample number and associated field sample number.

Analytical results will be given in units of mg/kg for solids and ,ug/L for liquid samples. In addition to the analytical results and QC data, details regarding the corrective actions taken and a discussion of any necessary modifications of the protocols established in the referenced methods will be included in the final data report. The final data package submitted by the analytical laboratory will include a summary of the analytical results for each sample as well as all reports and documentation generated as required by analytical methods. The final data package will be compared to the preliminary results by the Field Sampling Manager. Any discrepancies affecting field activities will be reported to the Quality Assurance Coordinator immediately. Analytical Level II will be followed for all field investigation sampling for this project. The analytical laboratory will provide the Analytical Level II data package for all post-excavation verification and field investigation sampling using EPA Method 8082.

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