4-CXY Hangar 501 Subsurface Findings.pdf

January 14, 2021

Ms. Jessica Silcox Environmental Program Manager, Engineering Susquehanna Area Regional Area Airport Authority One Terminal Drive, Suite 300 Middletown, Pennsylvania 17057

Re: Soil Sampling and Analytical Testing at Hangar Building No. 501

Capital City Airport 210 Airport Road, New Cumberland, Pennsylvania Dear Ms. Silcox:

Skelly and Loy, Inc. is submitting this letter report to Susquehanna Area Regional Area Airport Authority (SARAA) to document the sampling and analytical testing completed on December 9, 2020, at the former Hempt Hangar Building (Hangar Building No. 501), located at the Capital City Airport in New Cumberland, Fairview Township, York County, Pennsylvania ( Figure 1).

This report describes the soil and groundwater sampling efforts that were completed and documents the findings of the investigation.

INTRODUCTION

On September 24, 2020, Skelly and Loy and Odyssey Environmental Services (Odyssey), a drilling subcontractor company from Harrisburg, Pennsylvania, completed a site reconnaissance while accompanied by Ms. Jessica Silcox (SARAA). The purpose of the field reconnaissance was to determine if it was feasible to complete soil borings through the three existing floor drains (one in each bay) so that soil core samples could be visually classified, collected, and tested to determine if any contaminants were historically released to the subsurface. The utilities were assessed to determine if additional measures would be required to clear the proposed borings with respect to underground utilities due to utility locator restrictions on private properties.

The ultimate scope of the project was to address environmental concerns and provide a baseline assessment of contaminants of concern that could have potentially impacted the subsurface from past operations completed within the hangar building. The areas of interest in each bay consisted of the floor drains and water spigot locations (one each in all three bays). The locations of the floor drains and water spigots are illustrated on the floor plan (Figure 2). The water spigot locations were chosen because the concrete floor at each spigot location had been removed from a small area and backfilled with stone to allow water to drain into the subsurface beneath the floor slab. The floor drains appear to be connected to terra-cotta and PVC piping; however, it could not be determined how the piping is configured beneath the floor slab and where the piping ultimately discharges. It is assumed that the floor drainage system piping discharges underground or possibly to the storm sewer since the topography is relatively flat and would prohibit discharge to the ground surface. Building plans were requested from SARAA, but it was reported that no plans were available for this building. Photographs of the floor drains and water spigots are included in Enclosure 1.

Skelly and Loy, Inc., A Terracon Company 449 Eisenhower Boulevard, Suite 300 Harrisburg, PA 17111-2302 P (717) 232 0593 F (717) 232-1799 skellyloy.com terracon.com

FIELD INVESTIGATION

Skelly and Loy requested a Pennsylvania One Call System, Inc. (PA One-Call) emergency utility mark-out for the proposed area of disturbance. Once the PA One-Call approval was received through e-mail, Skelly and Loy was able to proceed with on-site activities.

Skelly and Loy and Odyssey mobilized to the site to complete soil sampling activities on December 9, 2020. Ms. Silcox was on the site throughout the duration of the project to oversee investigative efforts completed on behalf of SARAA. Prior to the start of work, a brief health and safety meeting, including the discussion of COVID-19 safe work practices, was completed to identify potential health hazards that were present on the site or might arise because of on-site activities.

Based on the site reconnaissance performed in September 2020, Skelly and Loy was able to determine that the water service line appeared to go below the concrete floor of the building, but its specific location was not known at the time of investigation. For this reason, soft-dig equipment was used to clear the boring locations to an approximate depth of four feet below grade. The soft dig process utilizes high-pressure air applied to the subsurface to loosen soils in conjunction with a high-volume vacuum to remove the material. A manually operated core drill was used to core through the concrete floor at locations adjacent to all three floor drains and two of the three water spigot locations (in Bays 2 and 3). Coring was not necessary at the water spigot location in Bay 1 as the soil boring was able to advance through the existing floor cutout that had been filled in with gravel. The borings were first advanced with the soft-dig equipment to a depth of four feet below grade to make sure the underground water line was not beneath the location of the proposed soil borings. Soil borings were then advanced at each of the cleared locations using a Geoprobe® Model 54DT. Continuous soil core samples were collected from a depth of four feet below grade to the termination depth of each boring using a stainless-steel macro-core sampler equipped with a new acetate liner (for each sample collected) in accordance with industry standard sampling procedures.

Skelly and Loy’s on-site Geologist-in-Training (GIT) field-screened the soil core samples using a MiniRae 3000 photoionization detector (PID) meter, visually classified the soils, and provided a physical description of the soils. The PID utilizes an ultraviolet lamp to ionize volatile organic compounds (VOCs) for detection and measurement relative to isobutylene. Elevated PID measurements indicate the possible presence of VOCs in the soil. The PID meter was calibrated with a known standard according to the manufacturer’s recommendations to ensure accurate readings in the field.

Soil and groundwater samples collected from the hangar bays are further described below.

Information on the soil sample depths is included in Table 1. The floor plan (Figure 2) illustrates the sample locations.

Bay 1

Two soil borings (B-1: SB-1 and B-1: SB-2) were drilled, and two soil samples were collected from these borings for laboratory testing. Probe refusal (likely from apparent bedrock or cobbles) was encountered in both borings, ranging in depth from seven to nine feet below grade. Groundwater was not encountered in these borings.

During drilling, an electrical circuit breaker box mounted on the wall behind the water spigot was inspected, and two of the circuit breakers were labeled “Gasoline Pumps” and “Sign Esso” (see Photograph Nos. 13 and 14). Explosion-proof electrical conduit was observed exiting the western exterior wall of the building (Bay 3) and going underground (see Photograph No. 6);

this type of electrical conduit contains “seal off” to prevent vapors from migrating through the conduit and into a building and is typically used with underground storage tanks (UST).

The soils consisted of brown clay with some sand and angular pieces of gravel-sized limestone. Soil samples were collected for laboratory testing for target compound list (TCL) VOCs, TCL-Semi-VOCs, and total metals (priority pollutant list). The PID field-screening results detected the presence of measurable VOCs in both borings. Soil samples were collected from as the bottom portion of the borings where the highest PID measurements were detected.

Bay 2

Two soil borings (B-2: SB-1 and B-2: SB-2) were drilled, and two soil samples were collected from these borings for laboratory testing. Probe refusal (likely from apparent bedrock or cobbles) was encountered in both borings, ranging in depth from 2.75 to 9.5 feet below grade.

Groundwater was not encountered in these borings.

A metallic object was encountered during auger drilling at a depth of two feet below grade in Bay 2 during the initial boring attempt for B-2: SB-2 near the floor drain. The object was encountered after the limestone subbase and approximately one foot of soil were removed. When the object was lightly tapped with a stainless-steel pry bar, it sounded hollow at the top of the object.

It appeared to have a cylindrical shape with no defined edges observed within the ten-inch borehole.

Based on these observations, it is very possible this object could be an UST. The boring was abandoned and backfilled, then another boring was drilled approximately five feet to the west of the abandoned location (Figure 2). The relocated boring did not encounter the metallic object.

The soils consisted of brown to reddish-brown, sandy clay with some silt and angular pieces of gravel-sized limestone. Soil samples were collected for laboratory testing for TCL VOCs, TCL-Semi-VOCs, and total metals (priority pollutant list). The PID field-screening results detected the presence of measurable VOCs in both borings. At the end of B-2: SB-2, a moderate odor of weathered gear oil was noted from the soils at a depth of eight to nine feet below grade.

No staining was observed in this boring.

Bay 3

Two soil borings (B-3: SB-1 and B-3: SB-2) were drilled, and two soil samples were collected for laboratory testing from these borings. Probe refusal (likely from apparent bedrock or cobbles) was encountered in both borings, ranging in depth from 10 to 13 feet below grade.

Groundwater was encountered in B-3: SB-2 (near the water spigot) at a depth of 12.1 feet below grade.

The soils consisted of brown silty clay. Soil samples were collected for laboratory testing for TCL VOCs, TCL-Semi-VOCs, and total metals (priority pollutant list). The PID field-screening results detected the presence of measurable VOCs in both borings. In B-3: SB-1 (near the floor drain), a moderate odor of diesel fuel was noted from the soils at a depth of two to three feet below grade and continued to the bottom of the boring (terminal depth of ten feet below grade).

Black soil staining was observed in the soil core sample, and a diesel fuel odor was noted. In B-3: SB-2 (near the water spigot), a weathered gear-oil like odor was noted from the soils at a depth of 8 to 12 feet below grade. No soil staining was noted in this boring.

Upon completion of soil boring activities, each boring was backfilled with a combination of soil generated during soil boring activities and gravel. In areas that were core drilled, the surface was restored with concrete. Photographs of the field activities are included in Enclosure 1, and copies of the soil boring logs are included in Enclosure 2.

To prevent cross-contamination and ensure the consistency of the sample collection method, a new pair of sampling gloves was worn while collecting each sample. All parts of the macro-core sampler in direct contact with the soil core samples were decontaminated prior to and after each use to avoid cross-contamination of the samples. The decontamination process was completed in accordance to industry standard practices. To document that non-dedicated sampling equipment was adequately cleaned, an equipment blank water sample was collected by running laboratory-supplied deionized water through the macro-core sampler and acetate liner and into laboratory-supplied bottles for laboratory quality assurance/quality control (QA/QC).

All samples were submitted to Pace Analytical of Greensburg, Pennsylvania, and analyzed for the list of parameters referenced earlier using United States Environmental Protection Agency methods referenced on the laboratory reports. Copies of the laboratory analytical reports are included in Enclosure 3.

SAMPLE ANALYTICAL RESULTS

Soil sample analytical results revealed the presence of four VOCs and seven different metals in the soil samples collected beneath the three hangar bays. The VOC and metals concentrations were compared to the Pennsylvania Department of Environmental Protection (PA DEP) Direct Contact (DC) Medium Specific Concentrations (MSC) for a non-residential setting and the PA DEP Clean Fill and Regulated Fill criteria. None of the VOC and metal concentrations detected exceeded any of the referenced PA DEP criterion.

Groundwater sample analytical results from the sample collected beneath Hangar Bay 3 revealed the presence of one VOC and four metals. The VOC and metals were compared to the PA DEP Statewide-Health Standards MSC for used aquifers (less than or equal to 2,500 milligrams per kilogram [mg/kg] in a non-residential setting. Total lead was detected at a concentration of 8.8 micrograms per liter (µg/L), which exceeds the PA DEP MSC of 5 µg/L.

Dissolved lead was not detected in the groundwater sample (<5 µg/L), The QC/QC sampling results for the equipment blank revealed trace concentrations of acetone, chloroform, and methylene chloride. All three chemicals detected are used as laboratory solvents and are common laboratory contaminants. Furthermore, all concentrations were detected at low concentrations, so it is our opinion that this may be cross-contamination from the laboratory during sample extraction and not related to the potential site-related contamination.

The soil sample analytical results are summarized in Table 2, and the groundwater sample analytical results are summarized in Table 3. Copies of the laboratory analytical reports and sample custody control documentation are included in Enclosure 3.

CONCLUSIONS AND RECOMMENDATIONS

The soil sample analytical results from each of the hangar bays meet the PA DEP DC MSC (for non-residential setting) and the Clean/Regulated Fill criteria. The detected VOC concentrations are also below the PA DEP soil vapor intrusion criteria. Therefore, no further action is required regarding the soils.

The groundwater sample that was collected in Bay 2 at the water spigot (B-2: SB-2) exceeded the PA DEP groundwater MSC for total lead; however, dissolved lead was not detected.

Since the facility is served by public water, consumption of groundwater is not an issue. If excavation were to occur beneath or close to Hangar Building No. 501 and construction dewatering were to occur, it is recommended that analytical testing of the groundwater be completed to evaluate the groundwater quality and determine how to properly handle and manage the water generated from dewatering activities. Since the total lead concentration exceeds the PA DEP Act 2 groundwater MSC, filtering likely would be recommended for any construction dewatering.

Evidence observed during site reconnaissance and drilling completed at the site suggests that an underground fueling system was historically operated on the western side of Hangar Building No. 501. Observations included the following.

• Explosion-proof electrical conduits exit the western side of the building and continue underground. The termination point of these conduits was not determined.

• Electrical circuit breakers inside the building labeled “gasoline pumps” and “Sign Esso” suggest that a gasoline fueling system was formerly operated at the site.

• In the grass outside of Hangar Bay 2, several small metal bollards can be seen equally spaced apart. Bollards are commonly used at service stations to protect fuel dispensers and/or UST tank tops.

• The ground surface in this area shows some subsidence, possibly suggesting the presence of former UST systems.

There was no subsurface investigation completed outside of the building as part of this work scope.

The metallic object encountered two feet below the floor slab in Hangar Bay 2 could be an abandoned UST. The borehole through which the metallic object was observed was approxi-mately four inches in diameter, but no edges were observed to determine if the object could have been a pipe. Further investigation would be required to access the metallic object to determine if it is a UST and if the tank contains liquids, which eventually could be released to the subsurface as the tank deteriorates over time.

If you have any questions or require additional information, please contact us. Skelly and Loy appreciates the opportunity to have assisted SARAA with this project.

Sincerely yours, SKELLY and LOY, Inc.

Shannon N. Evans, G.I.T.

Field Geologist

Edward Durborow, P.G.

Senior Geologist

Enclosures cc: JN207455 File: JN207455 Final Rpt (2021-01-14).docx https://na3.documents.adobe.com/verifier?tx=CBJCHBCAABAAQNYL4pLFSpRoa035imuiy6kO8XfAqnUT

FIGURES

Scale: 1" = 2,000'

Figure 1

Project Location Map

Source: U.S.G.S. 7.(5') Quadrangle, Lemoyne, Steelton, PA

Jan. 2021

SARAA Capital City Airport

Job No. JN207455

Fairview Township York County, Pennsylvania

Former Hempt Hangar Building No. 501

0' 20' 40'

Scale: 1" = 20'

Figure 2

Legend

Floor drain Spigot

Sample Location Floor Plan

Jan. 2021

SARAA Capital City Airport

Job No. JN207455

Fairview Township York County, Pennsylvania

Former Hempt Hangar Building No. 501

Area of noted water damage

Area of avian feces

Concrete septic tank opening

TABLES

Sample Medium Bay Sample Name/ Location

Proposed Boring

Depth (feet)

Actual Boring

Depth (feet)

Sample Depth Range (feet)

Maximum Reading

(parts per million)

Depth Interval (feet)

Notes

B-1: SB-1

Water Spigot 15 9 8-9 10.6 8-9 No chemical odor or staining noted.

Encountered probe refusal at 9 foot bgs.

B-1: SB-2

Floor Drain 15 7 6-7 14.7 7 No chemical odor or staining noted.

Encountered probe refusal at 7 foot bgs.

B-2: SB-1

Water Spigot 15 2.75 2.25-2.75 21.1 2 No chemical odor or staining noted.

Encountered auger refusal at 2.75 foot bgs.

B-2: SB-2

Floor Drain 15 9.5 8.5-9.5 179.4 9-9.5

Encountered strong odor of weathered gear oil at 9 foot bgs.

Encountered probe refusal at 9.5 foot bgs.

B-3: SB-1

Floor Drain 15 10 8-9 79.5 9

Encountered moderate odor of diesel fuel at 2-3 foot bgs. Encountered probe refusal at 10 foot bgs.

B-3: SB-2

Water Spigot 15 13 10-11 245 12

Encountered moderate odor of weathered gear-oil like odor at 8 foot bgs. Encountered groundwater and probe refusal at 13 foot bgs.

Groundwater Bay 3 B-3: SB-2 Water Spigot 15 13 13 - - No chemical odor noted. Water was turbid and appeared light gray upon sample collection.

Water - Equipment Blank - - - - - Collected after decontaminating equipment.

Notes:

All samples collected on December 9, 2020; bgs = below grade surface

Bay 1

Bay 2 Soil

TABLE 1

SUMMARY OF SAMPLING DATA

Former Hempt Hangar Building No. 501 - Capital City Airport

Fairview Township, York County, Pennsylvania

Photoionization Detector Meter Reading

Bay 3

TABLE 2

SOIL SAMPLE ANALYTICAL RESULTS: VOCs and Metals

Capital City Airport - Former Hempt Hangar, Building No. 501

Fairview Township, York County, Pennsylvania

VOCs

B-1: SB-1 8-9 <9.7 6.9 <9.7 <4.9

B-1: SB-2 6-7 9.9 5.7 <8.2 <4.1

B-2: SB-1 2.75 46.5 6.8 <10.7 <5.4

B-2: SB-2 8.5-9.5 35.2 5.1 <9.8 <4.9

B-3: SB-1 8-9 10.2 7.7 <10 <5.0

B-3: SB-2 10-11 18.5 5.3 22.7 11.3

67-64-1 75-09-2 78-93-3 108-88-3

10,000,000 10,000,000 10,000,000 10,000,000

10,000,000 10,000,000 10,000,000 10,000,000

430,000 76 76,000 44,000

1,200,000 76 76,000 44,000

4,700,000 1,500 1,100,000 44,000

Metals

B-2: SB-2 8.5-9.5 5.8 0.47 10.4 3.8 7.5 11.7 23.0

B-3: SB-1 8-9 2.9 0.94 19.2 6.1 20.4 31.9 49.8

B-3: SB-2 10-11 2.9 0.38 10.4 3.9 8.7 12.4 24.1

7440-38-2 7440-41-7 7440-47-3 7440-50-8 7439-92-1 7440-02-0 7440-66-6

61 6,400 190,000 120,000 1,000 64,000 190,000

190,000 190,000 190,000 190,000 190,000 190,000 190,000

12 320 190,000 8,100 450 650 12,000

29 320 190,000 43,000 450 650 12,000

NOTES:

3 PA DEP Management of Fill Clean Fill Concentration Limits (revised November 2, 2019)

5 PA DEP SHS SVsoil

Sample

Identification

Sample

Depth

(ft)

Lab Results (µg/kg)

Acetone Methylene

Chloride

2-Butanone

(MEK)

Toluene

CAS Number 1 DC - NR (0-2-ft)

2 DC - NR (2-15-ft)

3 PA DEP CFCL

4 PA DEP RFCL

mg/kg - milligrams per kilograms µg/kg = micrograms per kilogram VOCs = volatile organic compounds MEK = methyl ethyl ketone

Sample

Identification

Sample

Depth (ft)

Lab Analytical Results (mg/kg)

Arsenic Beryllium Chromium Copper Lead Nickel Zinc

CAS Number 1 DC - NR (0-2-ft)

2 DC - NR (2-15-ft)

3 PA DEP CFCL

4 PA DEP RFCL

Table only includes analytes that were detected at concentrations above the laboratory reporting detection limits in at least one sample; for a complete list of testing parameters, refer to laboratory analytical report.

1 Pennsylvania Department of Environmental Protection (PA DEP) Direct Contact Medium-Specific Concentration for Organic & Inorganic Regulated Substances in Soil in a Non-Residential setting for 0-2 feet depth interval (25 PA Code §250, Appendix A, Table Nos. 3A & 4A, revised 11/2019) 2 PA DEP Direct Contact Medium-Specific Concentration for Organic and Inorganic Regulated Substances in Soil in a Non-Residential Setting for 2-15 feet depth interval (25 PA Code §250, Appendix A, Table Nos. 3A & 4A, revised 11/2019)

4 PA DEP Management of Fill Regulated Fill Concentration Limits (revised November 2, 2019) 5 PA DEP Soil Statewide Health Standard Vapor Intrusion Screening Values (SV) for a Non-Residential Setting

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TABLE 3

GROUNDWATER SAMPLE ANALYTICAL RESULTS: VOCs and Metals

Capital City Airport - Former Hempt Hangar, Building No. 501

Fairview Township, York County, Pennsylvania

VOCs

Methylene

Chloride

1.4

75-09-2

4,000

95,000

Metals (Total/ Dissolved)

Chromium Copper Zinc

11.4 / <5.0 5.8 / <5.0 8.8 / <5.0 22.4 / <10.0

7440-47-3 7440-50-8 7440-66-6

100 1,000 2,000

NOTES:

VOCs - Volatile Organic Compounds µg/L - micrograms per liter GW - Groundwater

2 PA DEP SHS SVsoil

Sample

Identification

Results (µg/L)

B-3: SB-2 GW

CAS Number

1 MSC - NR

Sample

Identification

Laboratory Analytical Results (µg/L)

Lead

B-3: SB-2 GW

CAS Number 749-92-1

Bolded and shaded result indicates the concentration exceeds the referenced standard

MSC - NR 5

The VOCs Table only includes analytes that were detected at concentrations above the laboratory reporting detection limits. The Metals

(Total/Dissolved) Table shows detected total metals concentrations and their corresponding dissolved metals concentrations. For a complete list of testing parameters, refer to laboratory analytical report.

In the Metals (Total/ Dissolved) table, the first number listed indicates total metals and the second number listed indicates dissolved metals.

The dissolved metals sample was obtained by filtering groundwater through a 0.45 micron field filter.

1 Direct Contact Medium-Specific Concentration for Organic Regulated Substances in Groundwater; Used Aquifer with Total Dissolved Solids

≤ 2,500 mg/kg in a Non-Residential setting (25 PA Code §250, Appendix A, Tables 1 and 2, revised 11/2016) 2 PA DEP Soil Statewide Health Standard Vapor Intrusion Screening Values for a Non-Residential Setting

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ENCLOSURE 1 –

PHOTODOCUMENTATION

ENCLOSURE 1: PHOTODOCUMENTATION

CAPITAL CITY AIRPORT – FORMER HEMPT HANGAR BUILDING NO. 501

FAIRVIEW TOWNSHIP, YORK COUNTY, PENNSYLVANIA

Photograph No. 1 – Looking inside floor drain in Hangar Bay No. 3 at an open pipe joint directly beneath the drain opening in the concrete floor.

Photograph No. 2 – Looking southwest at the water spigot in Hangar Bay No. 3.

Photograph No. 3 – Looking west at an unknown (four-inch diameter) steel pipe cutoff at floor level in Hangar Bay No. 3.

Photograph No. 4 – Looking north at the water spigot in Hangar Bay No. 2.

Photograph No. 5 – Looking south at the water spigot in Hangar Bay No. 1.

Photograph No. 6 – Closeup of three explosion-proof electrical conduits entering the building through the exterior western wall of the building at Hangar Bay No. 3.

Photograph No. 7 – A view of the subject site (former Hempt Hagar Building No. 501) prior to the commencement of drilling activities.

Photograph No. 8 – A view of the rear side of the former Hempt Hangar Building No. 501.

Photograph No. 9 – In Bay 1, a view of the soft dig equipment as it is backed into the first work area.

Photograph No. 10 – In Bay 1, a close-up view of the soft dig equipment used (air wand and vacuum) at the location of B-1: SB-1.

Photograph No. 11 – In Bay 1, a view of the soil boring activities completed for soil boring B-1:

SB-1 completed at the location of the water spigot.

Photograph No. 12 – A view of the soils encountered at 8-9 bgs in B-1: SB-1 that were sampled near the location of the water spigot. These soils consisted of predominately brown clay with some sand and silt along with gravel-sized pieces of gray limestone.

Photograph No. 13 – A view of the electrical box located in Bay 1 near the water spigot.

Photograph No. 14 – A closer look at the label inside the electrical box in Bay 1. To the right of the directory, the caption for Circuit 22 is labeled “Gasoline Pumps.”

Photograph No. 15 – In Bay 1, a view of the core drilling activities completed for soil boring B-1:

SB-2 at the location of the floor drain.

Photograph No. 16 – In Bay 1, A view of the soil boring activities completed for soil boring B-1:

SB-2 near the location of the floor drain.

Photograph No. 17 – In Bay 2, A view of the soft dig (hand-augering) equipment for boring B-2:

SB-1 near the location of the water spigot.

Photograph No. 18 – A view of the soils encountered at 2.75 feet bgs in B-2: SB-1 near the location of the water spigot. These soils consisted of predominately brown, sandy clay.

Photograph No. 19 – In Bay 2, a view of the initial boring (B-2: SB-2) that was hand-augured to approximately two feet after soft dig equipment was used. Refusal was encountered in this initial boring due to striking a metallic object.

Photograph No. 20 – A view of the metallic object in the initial boring for B-2: SB-2 that was encountered at two feet below the concrete surface. When the object was lightly tapped with a pry bar, it sounded hollow at the top and solid at the bottom.

Photograph No. 21 – In Bay 2, a view of the core drilling activities completed for soil boring B-1:

SB-2 at the location of the floor drain. This was offset from the previous photographed hole and floor drain.

Photograph No. 22 – A close-up view of the soft dig equipment (air wand and vacuum) used within Bay 2 at the location of B-2: SB-2.

Photograph No. 23 – In Bay 2, a view of the soil boring activities completed for soil boring B-2:

SB-2 at the location of the floor drain.

Photograph No. 24 – A view of the soils encountered at 8.5-9.5 feet bgs in B-2: SB-2 that were sampled near the location of the floor drain. These soils consisted of predominately reddish-brown, silty clay with gravel-sized pieces of gray limestone. At this depth, the soils emitted a moderate to strong odor of suspected weathered gear oil.

Photograph No. 25 – In Bay 2, a view of the materials that were removed from boring B-2: SB-2.

This includes material from the initial boring that was abandoned due to refusal from a metallic object.

Photograph No. 26 – In Bay 2, an additional view of the materials pictured in Photograph No. 19 relative to the borings that were completed.

Photograph No. 27 – In Bay 3, a view of the core drilling activities completed for soil boring B-3:

SB-1 at the location of the floor drain.

Photograph No. 28 – In Bay 3, a view of the soft digging completed for soil boring B-3: SB-1 completed at the location of the floor drain.

Photograph No. 29 – In Bay 3, a view of the soil boring activities completed for soil boring B-3: SB- 1 completed at the location of the floor drain.

Photograph No. 30 – A view of the soils encountered at 8-9 feet bgs in B-2: SB-1 that were sampled near the location of the floor drain. These soils consisted of predominately reddish-brown, silty clay.

At this depth, the soils emitted a moderate odor of suspected diesel fuel.

Photograph No. 31 – In Bay 3, A view of the soft dig (hand-augering) equipment for boring B-2:

SB-2 near the location of the water spigot.

Photograph No. 32 – In Bay 3, a view of the soil boring activities completed for soil boring B-2:

SB-2 at the location of the water spigot.

Photograph No. 33 – A view of the soils encountered at 10-11 feet bgs in B-3: SB-2 that were sampled near the location of the water spigot. These soils consisted of predominately reddish-brown, silty clay. At this depth, the soils emitted a mild to moderate odor of suspected weather gear oil.

Photograph No. 34 – In Bay 3, a view of the temporary well set at B-3: SB-2 near the location of the water spigot. This well was used to sample the groundwater encountered.

Photograph No. 35 – In Bay 2, a view of the patched concrete surfaces covering the borings that were completed near the floor drain.

Photograph No. 36 – In Bay 2, a view of the patch concrete surface covering the drill-cored area that was completed near the water spigot.

Photograph No. 37 – In Bay 3, a view of the patched concrete surface covering the boring that was completed near the floor drain.

Photograph No. 38 – In Bay 3, a view of the patched concrete surface covering the boring that was completed near the water spigot.

ENCLOSURE 2 –

SOIL BORING LOGS

PI

D

R

EA

D

IN

G S

1.5

7.4

7.0

7.5

7.4

8.3

8.3

10.3

10.6

R

EA

D

IN

G S

6.0

7.1

7.6

10.4

14.7

R

EA

D

IN

G S

6.4

21.1

R

EA

D

IN

G S

0.0

0.0

0.0

0.0

6.4

12.3

15.9

20.7

.4

R

EA

D

IN

G S

0.0

0.0

0.0

0.0

14.4

53.4

46.1

79.5

17.4

R

EA

D

IN

G S

0.0

0.0

7.1

6.2

24.4

14.5

17.8

48.4

245245

ENCLOSURE 3 –

LABORATORY ANALYTICAL RESULTS AND

SAMPLE CUSTODY-CONTROL DOCUMENTATION

#=CL#

December 24, 2020

LIMS USE: FR - ED DURBOROW

LIMS OBJECT ID: 30396598

30396598 Project:

Pace Project No.:

RE:

Mr. Ed Durborow Skelly & Loy (Harrisburg) 449 Eisenhower Blvd Suite 300 Harrisburg, PA 17111

JN207455

Dear Mr. Durborow:

Enclosed are the analytical results for sample(s) received by the laboratory on December 10, 2020. The results relate only to the samples included in this report. Results reported herein conform to the applicable TNI/NELAC Standards and the laboratory's Quality Manual, where applicable, unless otherwise noted in the body of the report.

The test results provided in this final report were generated by each of the following laboratories within the Pace Network:

• Pace Analytical Services - Greensburg

If you have any questions concerning this report, please feel free to contact me.

Sincerely, Samantha Bayura samantha.bayura@pacelabs.com

Project Manager (724)850-5622

Enclosures cc: Ms. Shannon Evans, Skelly & Loy (Harrisburg) Mr. Brian M. Hamilla, Skelly & Loy (Harrisburg) Brandon Stickler, Skelly & Loy

REPORT OF LABORATORY ANALYSIS

This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.

Pace Analytical Services, LLC 1638 Roseytown Road - Suites 2,3,4

Greensburg, PA 15601 (724)850-5600

#=CP#

CERTIFICATIONS

Pace Project No.:

Project:

30396598

JN207455

Pace Analytical Services Pennsylvania 1638 Roseytown Rd Suites 2,3&4, Greensburg, PA 15601 ANAB DOD-ELAP Rad Accreditation #: L2417 Alabama Certification #: 41590 Arizona Certification #: AZ0734 Arkansas Certification California Certification #: 04222CA Colorado Certification #: PA01547 Connecticut Certification #: PH-0694 Delaware Certification EPA Region 4 DW Rad Florida/TNI Certification #: E87683 Georgia Certification #: C040 Florida: Cert E871149 SEKS WET Guam Certification Hawaii Certification Idaho Certification Illinois Certification Indiana Certification Iowa Certification #: 391 Kansas/TNI Certification #: E-10358 Kentucky Certification #: KY90133 KY WW Permit #: KY0098221 KY WW Permit #: KY0000221 Louisiana DHH/TNI Certification #: LA180012 Louisiana DEQ/TNI Certification #: 4086 Maine Certification #: 2017020 Maryland Certification #: 308 Massachusetts Certification #: M-PA1457 Michigan/PADEP Certification #: 9991

Missouri Certification #: 235 Montana Certification #: Cert0082 Nebraska Certification #: NE-OS-29-14 Nevada Certification #: PA014572018-1 New Hampshire/TNI Certification #: 297617 New Jersey/TNI Certification #: PA051 New Mexico Certification #: PA01457 New York/TNI Certification #: 10888 North Carolina Certification #: 42706 North Dakota Certification #: R-190 Ohio EPA Rad Approval: #41249 Oregon/TNI Certification #: PA200002-010 Pennsylvania/TNI Certification #: 65-00282 Puerto Rico Certification #: PA01457 Rhode Island Certification #: 65-00282 South Dakota Certification Tennessee Certification #: 02867 Texas/TNI Certification #: T104704188-17-3 Utah/TNI Certification #: PA014572017-9 USDA Soil Permit #: P330-17-00091 Vermont Dept. of Health: ID# VT-0282 Virgin Island/PADEP Certification Virginia/VELAP Certification #: 9526 Washington Certification #: C868 West Virginia DEP Certification #: 143 West Virginia DHHR Certification #: 9964C Wisconsin Approve List for Rad Wyoming Certification #: 8TMS-L

REPORT OF LABORATORY ANALYSIS

This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.

Pace Analytical Services, LLC 1638 Roseytown Road - Suites 2,3,4

Greensburg, PA 15601

#=SA#

SAMPLE ANALYTE COUNT

Pace Project No.:

Project:

30396598

JN207455

Lab ID Sample ID Method Analytes Reported LaboratoryAnalysts

30396598001 B-1:SB-1 EPA 6010B 12 PASI-PACTS

EPA 7471A 1 PASI-PAKAS

EPA 8270D 75 PASI-PACF1

EPA 8260B 52 PASI-PAARG

ASTM D2974-87 1 PASI-PADSC

30396598002 B-1:SB-2 EPA 6010B 12 PASI-PACTS

EPA 7471A 1 PASI-PAKAS

EPA 8270D 75 PASI-PACF1

EPA 8260B 52 PASI-PAARG

ASTM D2974-87 1 PASI-PADSC

30396598003 Eq Blank EPA 6010B 12 PASI-PACTS

EPA 7470A 1 PASI-PAKAS

EPA 8270D 75 PASI-PAEAC

EPA 8260B 52 PASI-PALEL

30396598004 B-2:SB-1 EPA 6010B 12 PASI-PACTS

EPA 7471A 1 PASI-PAKAS

EPA 8270D 75 PASI-PACF1

EPA 8260B 52 PASI-PAARG

ASTM D2974-87 1 PASI-PADSC

30396598005 B-2:SB-2 EPA 6010B 12 PASI-PACTS

EPA 7471A 1 PASI-PAKAS

EPA 8270D 75 PASI-PACF1

EPA 8260B 52 PASI-PAARG

ASTM D2974-87 1 PASI-PADSC

30396598006 B-3:SB-1 EPA 6010B 12 PASI-PACTS

EPA 7471A 1 PASI-PAKAS

EPA 8270D 75 PASI-PACF1

EPA 8260B 52 PASI-PAARG

ASTM D2974-87 1 PASI-PADSC

30396598007 B-3:SB-2 EPA 6010B 12 PASI-PACTS

EPA 7471A 1 PASI-PAKAS

EPA 8270D 75 PASI-PACF1

EPA 8260B 52 PASI-PAARG

ASTM D2974-87 1 PASI-PADSC

30396598008 B-3:SB-2 GW EPA 6010B 12 PASI-PACTS

EPA 6010B 12 PASI-PACTS

EPA 7470A 1 PASI-PAKAS

REPORT OF LABORATORY ANALYSIS

This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.

Pace Analytical Services, LLC 1638 Roseytown Road - Suites 2,3,4

Greensburg, PA 15601

#=SA#

SAMPLE ANALYTE COUNT

Pace Project No.:

Project:

30396598

JN207455

Lab ID Sample ID Method Analytes Reported LaboratoryAnalysts

EPA 7470A 1 PASI-PAKAS

EPA 8270D 75 PASI-PAEAC

EPA 8260B 52 PASI-PALEL

30396598009 Trip Blank EPA 8260B 52 PASI-PALEL

PASI-PA = Pace Analytical Services - Greensburg

REPORT OF LABORATORY ANALYSIS

This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.

Pace Analytical Services, LLC 1638 Roseytown Road - Suites 2,3,4

Greensburg, PA 15601

#=NA#

PROJECT NARRATIVE

Pace Project No.:

Project:

30396598

JN207455

Method:

Client: Skelly & Loy (Harrisburg)

EPA 6010B

Date: December 24, 2020

Description: 6010 MET ICP

General Information:

8 samples were analyzed for EPA 6010B by Pace Analytical Services Greensburg. All samples were received in acceptable condition with any exceptions noted below or on the chain-of custody and/or the sample condition upon receipt form (SCUR) attached at the end of this report.

Hold Time:

The samples were analyzed within the method required hold times with any exceptions noted below.

Sample Preparation:

The samples were prepared in accordance with EPA 3050B with any exceptions noted below.

The samples were prepared in accordance with EPA 3005A with any exceptions noted below.

Initial Calibrations (including MS Tune as applicable):

All criteria were within method requirements with any exceptions noted below.

Continuing Calibration:

All criteria were within method requirements with any exceptions noted below.

Method Blank:

All analytes were below the report limit in the method blank, where applicable, with any exceptions noted below.

Laboratory Control Spike:

All laboratory control spike compounds were within QC limits with any exceptions noted below.

Matrix Spikes:

All percent recoveries and relative percent differences (RPDs) were within acceptance criteria with any exceptions noted below.

QC Batch: 427284 A matrix spike and/or matrix spike duplicate (MS/MSD) were performed on the following sample(s): 30396598001

ML: Matrix spike recovery and/or matrix spike duplicate recovery was below laboratory control limits. Result may be biased low.

• MS (Lab ID: 2064986)

• Antimony

Duplicate Sample:

All duplicate sample results were within method acceptance criteria with any exceptions noted below.

QC Batch: 427284

D6: The precision between the sample and sample duplicate exceeded laboratory control limits.

• DUP (Lab ID: 2064985)

• Arsenic

Additional Comments:

REPORT OF LABORATORY ANALYSIS

This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.

Pace Analytical Services, LLC 1638 Roseytown Road - Suites 2,3,4

Greensburg, PA 15601

Pace Project No.:

Project:

30396598

JN207455

Method:

Client: Skelly & Loy (Harrisburg)

EPA 6010B

Date: December 24, 2020

Description: 6010 MET ICP, Dissolved

General Information:

1 sample was analyzed for EPA 6010B by Pace Analytical Services Greensburg. All samples were received in acceptable condition with any exceptions noted below or on the chain-of custody and/or the sample condition upon receipt form (SCUR) attached at the end of this report.

Hold Time:

The samples were analyzed within the method required hold times with any exceptions noted below.

Sample Preparation:

The samples were prepared in accordance with EPA 3005A with any exceptions noted below.

Initial Calibrations (including MS Tune as applicable):

All criteria were within method requirements with any exceptions noted below.

Continuing Calibration:

All criteria were within method requirements with any exceptions noted below.

Method Blank:

All analytes were below the report limit in the method blank, where applicable, with any exceptions noted below.

Laboratory Control Spike:

All laboratory control spike compounds were within QC limits with any exceptions noted below.

Matrix Spikes:

All percent recoveries and relative percent differences (RPDs) were within acceptance criteria with any exceptions noted below.

Duplicate Sample:

All duplicate sample results were within method acceptance criteria with any exceptions noted below.

Additional Comments:

REPORT OF LABORATORY ANALYSIS

This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.

Pace Analytical Services, LLC 1638 Roseytown Road - Suites 2,3,4

Greensburg, PA 15601

Pace Project No.:

Project:

30396598

JN207455

Method:

Client: Skelly & Loy (Harrisburg)

EPA 7470A

Date: December 24, 2020

Description: 7470 Mercury

General Information:

2 samples were analyzed for EPA 7470A by Pace Analytical Services Greensburg. All samples were received in acceptable condition with any exceptions noted below or on the chain-of custody and/or the sample condition upon receipt form (SCUR) attached at the end of this report.

Hold Time:

The samples were analyzed within the method required hold times with any exceptions noted below.

Sample Preparation:

The samples were prepared in accordance with EPA 7470A with any exceptions noted below.

Initial Calibrations (including MS Tune as applicable):

All criteria were within method requirements with any exceptions noted below.

Continuing Calibration:

All criteria were within method requirements with any exceptions noted below.

Method Blank:

All analytes were below the report limit in the method blank, where applicable, with any exceptions noted below.

Laboratory Control Spike:

All laboratory control spike compounds were within QC limits with any exceptions noted below.

Matrix Spikes:

All percent recoveries and relative percent differences (RPDs) were within acceptance criteria with any exceptions noted below.

QC Batch: 427208 A matrix spike and/or matrix spike duplicate (MS/MSD) were performed on the following sample(s): 30396565003,30396728002

ML: Matrix spike recovery and/or matrix spike duplicate recovery was below laboratory control limits. Result may be biased low.

• MS (Lab ID: 2064529)

• Mercury

Duplicate Sample:

All duplicate sample results were within method acceptance criteria with any exceptions noted below.

Additional Comments:

REPORT OF LABORATORY ANALYSIS

This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.

Pace Analytical Services, LLC 1638 Roseytown Road - Suites 2,3,4

Greensburg, PA 15601

Pace Project No.:

Project:

30396598

JN207455

Method:

Client: Skelly & Loy (Harrisburg)

EPA 7470A

Date: December 24, 2020

Description: 7470 Mercury, Dissolved

General Information:

1 sample was analyzed for EPA 7470A by Pace Analytical Services Greensburg. All samples were received in acceptable condition with any exceptions noted below or on the chain-of custody and/or the sample condition upon receipt form (SCUR) attached at the end of this report.

Hold Time:

The samples were analyzed within the method required hold times with any exceptions noted below.

Sample Preparation:

The samples were prepared in accordance with EPA 7470A with any exceptions noted below.

Initial Calibrations (including MS Tune as applicable):

All criteria were within method requirements with any exceptions noted below.

Continuing Calibration:

All criteria were within method requirements with any exceptions noted below.

Method Blank:

All analytes were below the report limit in the method blank, where applicable, with any exceptions noted below.

Laboratory Control Spike:

All laboratory control spike compounds were within QC limits with any exceptions noted below.

Matrix Spikes:

All percent recoveries and relative percent differences (RPDs) were within acceptance criteria with any exceptions noted below.

Duplicate Sample:

All duplicate sample results were within method acceptance criteria with any exceptions noted below.

Additional Comments:

REPORT OF LABORATORY ANALYSIS

This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.

Pace Analytical Services, LLC 1638 Roseytown Road - Suites 2,3,4

Greensburg, PA 15601

Pace Project No.:

Project:

30396598

JN207455

Method:

Client: Skelly & Loy (Harrisburg)

EPA 7471A

Date: December 24, 2020

Description: 7471 Mercury

General Information:

6 samples were analyzed for EPA 7471A by Pace Analytical Services Greensburg. All samples were received in acceptable condition with any exceptions noted below or on the chain-of custody and/or the sample condition upon receipt form (SCUR) attached at the end of this report.

Hold Time:

The samples were analyzed within the method required hold times with any exceptions noted below.

Sample Preparation:

The samples were prepared in accordance with EPA 7471A with any exceptions noted below.

Initial Calibrations (including MS Tune as applicable):

All criteria were within method requirements with any exceptions noted below.

Continuing Calibration:

All criteria were within method requirements with any exceptions noted below.

Method Blank:

All analytes were below the report limit in the method blank, where applicable, with any exceptions noted below.

Laboratory Control Spike:

All laboratory control spike compounds were within QC limits with any exceptions noted below.

Matrix Spikes:

All percent recoveries and relative percent differences (RPDs) were within acceptance criteria with any exceptions noted below.

Duplicate Sample:

All duplicate sample results were within method acceptance criteria with any exceptions noted below.

Additional Comments:

REPORT OF LABORATORY ANALYSIS

This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.

Pace Analytical Services, LLC 1638 Roseytown Road - Suites 2,3,4

Greensburg, PA 15601

Pace Project No.:

Project:

30396598

JN207455

Method:

Client: Skelly & Loy (Harrisburg)

EPA 8270D

Date: December 24, 2020

Description: 8270D MSSV Microwave

General Information:

6 samples were analyzed for EPA 8270D by Pace Analytical Services Greensburg. All samples were received in acceptable condition with any exceptions noted below or on the chain-of custody and/or the sample condition upon receipt form (SCUR) attached at the end of this report.

Hold Time:

The samples were analyzed within the method required hold times with any exceptions noted below.

Sample Preparation:

The samples were prepared in accordance with EPA 3546 with any exceptions noted below.

Initial Calibrations (including MS Tune as applicable):

All criteria were within method requirements with any exceptions noted below.

Continuing Calibration:

All criteria were within method requirements with any exceptions noted below.

QC Batch: 427915

CH: The continuing calibration for this compound is outside of Pace Analytical acceptance limits. The results may be biased high.

• B-1:SB-1 (Lab ID: 30396598001)

• 2,4-Dinitrophenol

• 4,6-Dinitro-2-methylphenol

• B-1:SB-2 (Lab ID: 30396598002)

• 2,4-Dinitrophenol

• 4,6-Dinitro-2-methylphenol

• B-2:SB-1 (Lab ID: 30396598004)

• 2,4-Dinitrophenol

• 4,6-Dinitro-2-methylphenol

• B-2:SB-2 (Lab ID: 30396598005)

• 2,4-Dinitrophenol

• 4,6-Dinitro-2-methylphenol

• B-3:SB-1 (Lab ID: 30396598006)

• 2,4-Dinitrophenol

• 4,6-Dinitro-2-methylphenol

• B-3:SB-2 (Lab ID: 30396598007)

• 2,4-Dinitrophenol

• 4,6-Dinitro-2-methylphenol

• BLANK (Lab ID: 2068134)

• 2,4-Dinitrophenol

• 4,6-Dinitro-2-methylphenol

• LCS (Lab ID: 2068135)

• 2,4-Dinitrophenol

• 4,6-Dinitro-2-methylphenol

• MS (Lab ID: 2068136)

• 2,4-Dinitrophenol

REPORT OF LABORATORY ANALYSIS

This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.

Pace Analytical Services, LLC 1638 Roseytown Road - Suites 2,3,4

Greensburg, PA 15601

Pace Project No.:

Project:

30396598

JN207455

Method:

Client: Skelly & Loy (Harrisburg)

EPA 8270D

Date: December 24, 2020

Description: 8270D MSSV Microwave

QC Batch: 427915

CH: The continuing calibration for this compound is outside of Pace Analytical acceptance limits. The results may be biased high.

• 4,6-Dinitro-2-methylphenol

• MSD (Lab ID: 2068137)

• 2,4-Dinitrophenol

• 4,6-Dinitro-2-methylphenol

Internal Standards:

All internal standards were within QC limits with any exceptions noted below.

Surrogates:

All surrogates were within QC limits with any exceptions noted below.

Method Blank:

All analytes were below the report limit in the method blank, where applicable, with any exceptions noted below.

Laboratory Control Spike:

All laboratory control spike compounds were within QC limits with any exceptions noted below.

QC Batch: 427915 L1: Analyte recovery in the laboratory control sample (LCS) was above QC limits. Results for this analyte in associated samples may be biased high.

• LCS (Lab ID: 2068135)

• 1,2,4-Trichlorobenzene

• 2,4-Dichlorophenol

• 2-Nitrophenol

• 4,6-Dinitro-2-methylphenol

• Benzoic acid

• Pentachlorophenol

Matrix Spikes:

All percent recoveries and relative percent differences (RPDs) were within acceptance criteria with any exceptions noted below.

Additional Comments:

Analyte Comments:

QC Batch: 427915 2c: The read back of the low concentration calibration standard for this compound is not within 30% of the true value. The results may be biased high and should be considered estimated.

• B-1:SB-1 (Lab ID: 30396598001)

• 4-Nitroaniline

• B-1:SB-2 (Lab ID: 30396598002)

• 4-Nitroaniline

• B-2:SB-1 (Lab ID: 30396598004)

• 4-Nitroaniline

REPORT OF LABORATORY ANALYSIS

This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.

Pace Analytical Services, LLC 1638 Roseytown Road - Suites 2,3,4

Greensburg, PA 15601

Pace Project No.:

Project:

30396598

JN207455

Method:

Client: Skelly & Loy (Harrisburg)

EPA 8270D

Date: December 24, 2020

Description: 8270D MSSV Microwave

Analyte Comments:

QC Batch: 427915 2c: The read back of the low concentration calibration standard for this compound is not within 30% of the true value. The results may be biased high and should be considered estimated.

• B-2:SB-2 (Lab ID: 30396598005)

• 4-Nitroaniline

• B-3:SB-1 (Lab ID: 30396598006)

• 4-Nitroaniline

• B-3:SB-2 (Lab ID: 30396598007)

• 4-Nitroaniline

• BLANK (Lab ID: 2068134)

• 4-Nitroaniline

• LCS (Lab ID: 2068135)

• 4-Nitroaniline

• MS (Lab ID: 2068136)

• 4-Nitroaniline

• MSD (Lab ID: 2068137)

• 4-Nitroaniline

E: Analyte concentration exceeded the calibration range. The reported result is estimated.

• LCS (Lab ID: 2068135)

• 3&4-Methylphenol(m&p Cresol)

REPORT OF LABORATORY ANALYSIS

This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.

Pace Analytical Services, LLC 1638 Roseytown Road - Suites 2,3,4

Greensburg, PA 15601

Pace Project No.:

Project:

30396598

JN207455

Method:

Client: Skelly & Loy (Harrisburg)

EPA 8270D

Date: December 24, 2020

Description: 8270D Organics Reduced Volume

General Information:

2 samples were analyzed for EPA 8270D by Pace Analytical Services Greensburg. All samples were received in acceptable condition with any exceptions noted below or on the chain-of custody and/or the sample condition upon receipt form (SCUR) attached at the end of this report.

Hold Time:

The samples were analyzed within the method required hold times with any exceptions noted below.

Sample Preparation:

The samples were prepared in accordance with EPA 3510C with any exceptions noted below.

Initial Calibrations (including MS Tune as applicable):

All criteria were within method requirements with any exceptions noted below.

Continuing Calibration:

All criteria were within method requirements with any exceptions noted below.

QC Batch: 426938

CH: The continuing calibration for this compound is outside of Pace Analytical acceptance limits. The results may be biased high.

• B-3:SB-2 GW (Lab ID: 30396598008)

• 3&4-Methylphenol(m&p Cresol)

• 3,3'-Dichlorobenzidine

• 4-Chloro-3-methylphenol

• 4-Nitrophenol

• Butylbenzylphthalate

• Hexachlorocyclopentadiene

• Pentachlorophenol

• BLANK (Lab ID: 2063407)

• 3&4-Methylphenol(m&p Cresol)

• 3,3'-Dichlorobenzidine

• 4-Chloro-3-methylphenol

• 4-Nitrophenol

• Butylbenzylphthalate

• Hexachlorocyclopentadiene

• Pentachlorophenol

• Eq Blank (Lab ID: 30396598003)

• 3&4-Methylphenol(m&p Cresol)

• 3,3'-Dichlorobenzidine

• 4-Chloro-3-methylphenol

• 4-Nitrophenol

• Butylbenzylphthalate

• Hexachlorocyclopentadiene

• Pentachlorophenol

• LCS (Lab ID: 2063408)

• 3&4-Methylphenol(m&p Cresol)

REPORT OF LABORATORY ANALYSIS

This report shall not be reproduced, except in full, without the…