Amendment 0002 - PPI Attachment Q46 - Haz Material Survey Report-Final - Credere - 6-22-21.pdf

Community Revitalization, Economic Development, Environmental Remediation & Engineering

June 22, 2021

Ms. Samantha Tardif Performance Assessment Representative Naval Facilities Engineering Command (NAVFAC) PWD Maine Building 40, Portsmouth, NH 03804-5000 samantha.tardif@navy.mil

Mr. Geoffrey A. Brown, Ph.D Asbestos Program Manager Naval Facilities Engineering Command Bldg. 59, First Floor, Portsmouth, NH 03804 geoffrey.a.brown@navy.mil

Subject: Urgent Service Order, Hazardous Material Sampling & Testing Report

Location: PNSY – Building 72 Tanks 1 and 2 Contract No: N4008520D0047

Dear Ms. Tardif and Mr. Brown:

Credere Associates, LLC (Credere) is providing this Hazardous Material Sampling & Testing Report of activities conducted between March 22 and May 13, 2021, at two exterior tanks associated with Building 72 at the Portsmouth Naval Shipyard (PNSY). The work was conducted in accordance with NAVFAC Contract No. N4008520D0047 (Contract) awarded on May 1, 2020, Maine Department of Environmental Protection (DEP) Chapter 425: Asbestos Management Regulations (Chapter 425), and Maine DEP Chapter 424: Lead Management Regulations (Chapter 424). This summary aims to provide a brief narrative of work performed and associated analytical results.

Sampling Requests and Objectives In preparation for tank refurbishing, Credere conducted a survey of suspect asbestos-containing building materials and paint potentially containing Resource Conservation and Recovery Act (RCRA) Metals and Polychlorinated Biphenyls (PCBs) on two exterior tanks identified by NAVFAC as Tank 1 and Tank 2 located adjacent to Building 72. Building material sampling was conducted on unique materials identified during the survey with consideration of a NAVFAC proposed scope of work presented in email correspondence dated March 17, 2021. The sample locations, IDs, and descriptions are shown on the attached Figure 1.

Prior Asbestos Testing NAVFAC provided Credere with asbestos sampling results from the exterior tanks that was conducted on April 5, 2005. According to an April 18, 2005, Memorandum by the Portsmouth Naval Shipyard Occupational Health and Safety Office, asbestos was detected in one “caulking-like material” identified at the top of Tank #2 underneath the insulating cover material. The 2005 Memorandum also

Hazardous Material Sampling & Testing Report June 22, 2021 PNSY, Building 72 Tanks 1 and 2 Page 2 of 5 indicated that the positive asbestos sample may have been collected from the insulating cover material itself. The Memorandum indicated that the extent of this material and whether it was on both tanks was unknown. A copy of the April 18, 2005, Memorandum is included as Attachment C. Credere specifically looked for this material in May 2021. Limited materials were observed under the antiskid and insulating cover; it is unclear if observed materials were the same materials sampled in 2005.

Additional samples were collected with the results discussed below.

Asbestos Sampling and Results In March and May 2021, suspect asbestos-containing materials (ACMs) were collected from the two tanks by a Credere Maine Certified Asbestos Inspector. Copies of the inspector’s certifications are included as Attachment A. A total of nine (9) suspect ACMs were sampled in triplicate (27 total samples). The sampling was performed in accordance with Maine DEP Chapter 425 Asbestos Regulations. Collected samples were submitted to EMSL Analytical, Inc. of South Portland, Maine for laboratory analysis by Polarized Light Microscopy according to U.S. Environmental Protection Agency (EPA) Method 600/R-93/116. Sample locations, ID’s, and descriptions are summarized on Table 1. The laboratory reports are included in Attachment B. The survey locations with sample ID’s and descriptions included the following:

CA-SACM-1 (A,B,C) – Tank 2 Black/gray, foam insulation, ground level of tank CA-SACM-2 (A,B,C) – Tank 1 White, caulk (patches), top of tank CA-SACM-3 (A,B,C) – Tank 1 Black/gray, woven/tar (patches), ground level of tank CA-SACM-4 (A,B,C) – Tank 2 Black/gray, woven/tar (original), ground level of tank CA-SACM-5 (A,B,C) – Tank 2 Black, tar/caulk, around pipes and extrusions CA-SACM-6 (A,B,C) – Tank 1 Yellow, anti-skid material, top of tank CA-SACM-7 (A,B,C) – Tank 2 Black/gray, caulk/adhesive, top of tank (possible 2005 material) CA-SACM-8 (A,B,C) – Containment Area Grey, caulk, concrete wall seams/penetrations CA-SACM-9 (A,B,C) – Containment Area Grey, caulk, between the concrete wall and asphalt

Based on the laboratory results, no materials sampled during the March or May 2021 sampling events were found to contain detectable asbestos. It should be noted that Credere attempted to locate and resample the material identified in 2005. The tanks were observed to be approximately 40-foot high cylinders that were covered with a foam type insultation and a woven cladding material. Spiral stairs were connected to each tank that provided access to the top of the tanks. A portion of the tank cover material on the outer rim of the tank top was coated with a yellow paint like anti-skid material. The only materials Credere identified that may have been the 2005 sampled caulk like substance included white patch caulking on the top of Tank 1 (CA-SACM-2), and a black to gray adhesive type caulking (CA-SACM-7); however, it is unclear if the 2005 sampled material remains on Site. No other caulking like materials were observed on either tank. If the positive asbestos-containing material identified in April 2005 is observed during future work involving these tanks, it should be properly abated in accordance with Maine DEP Chapter 425. The Credere asbestos inspector suggested that the 2005 material might have been an adhesive used to attach antiskid material on top of the tanks although it was not detected in sample CA-SACM-7. If present it would be difficult to identify or estimate the

PNSY, Building 72 Tanks 1 and 2 Page 3 of 5 extent without removing all the antiskid material, which only covers a relatively small portion of each tank roof with an estimate of approximately 60 square feet on each tank.

Additionally, the gaskets at pipe joints and valves and the valve packings should all be considered ACMs. These components, if removed, are usually removed intact. It is unclear from the work order if these fixtures will be disturbed or removed during renovation.

If any unidentified suspect ACMs are observed during future work, they should either be tested or assumed to contain asbestos and properly abated in accordance with Maine DEP Chapter 425.

Paint Chip Sampling and Results Credere collected paint chip samples from the tanks and associated structures in accordance with Maine DEP Chapter 424 Lead Regulations. On March 22, 2021, four samples were collected and submitted to Absolute Resource Associates of Portsmouth (ARA), New Hampshire for RCRA 8 Metals analysis by EPA Methods 6020/7471 and Polychlorinated Biphenyl (PCB) analysis by EPA Method 8082. Sample collection was chosen considering unique paint types and colors. The initial PCB results were inconclusive due to matrix interference, and an additional seven samples were collected on May 6, 2021. These samples were split and analyzed for PCBs using two different extraction and cleanup methods more amenable to PCBs in paints1. Sample locations, sample ID’s, and descriptions are summarized on Table 2. The laboratory reports are included in Attachment B.

The survey locations with sample ID’s and descriptions included the following:

Original Samples:

CA-PC-1 – Tank 2 – Yellow Anti-skid paint on top of tanks CA-PC-2 – Tank 1 – Layered gray, red, white, and black paints on tank exteriors CA-PC-3 – Tank 2 – Layered red and yellow paints on portions of tanks, associated fittings, and stairs CA-PC-4 – Tank 1 – Black/gray paint on tar woven material Resamples:

CA-PC-5 – Red paint on tank exterior below foam insulation – Resample for PC-2 CA-PC-6 – Gray paint on pipes and tank exterior below foam insulation – Resample for PC-2 CA-PC-7 – Gray/black paint on fiber outer cover – Resample for PC-4 CA-PC-8 – Black/yellow paint on stanchions – Resample for PC-3 and PC-1 CA-PC-9 – Black paint on pipe hangers – Resample for PC-2 CA-PC-10 – Red paint on stairs – Resample for PC-3 CA-PC-11 – Black paint on patched areas of fiber outer cover – Resample of PC-4

1 Technical Guidance for Determining the Presence of Polychlorinated Biphenyls (PCBs) at Regulated Concentrations on Vessels (Ships) to be Reflagged, US EPA, Nov 2013

PNSY, Building 72 Tanks 1 and 2 Page 4 of 5

Analytical results indicated that various metals were detected in each of the four samples. The highest concentrations of detected metals were found in sample CA-PC-3 collected from layered red and yellow paint observed on portions of the tanks, the associated stairs, and various fittings on the tanks.

Should the RCRA metals analytical data be used for disposal consideration, the “Rule of 20” was applied to sample results to determine the potential of “toxicity characteristic” as a hazardous waste.

The Rule of 20 is calculated with the total concentration results divided by 20 and compared to EPA Toxic Characteristic Leaching Procedure (TCLP) regulatory limits listed on Table 1 in 40 CFR Section §261.24. If the total concentration of an analyte is less than 20 times the TCLP limit, then the sample cannot leach enough of that constituent to exceed the standard.

As previously mentioned, the four initial samples collected on March 22 were inconclusive to the presence of PCBs due to matrix interference and were resampled on May 11 and submitted for analysis. Resampling of CA-PC-1 was not conducted at the same location because the yellow paint could not be separated from the antiskid material, so other yellow paint that could be separated was sampled and collected as CA-PC-8. Similar to the March results, the reporting limits achieved during the May testing for some samples were above the Toxic Substances Control Act (TSCA) regulatory definition (40 CFR 761.3) of a PCB Bulk Product ≥50 milligrams per kilogram (mg/kg) due to matrix interference and necessary laboratory dilution. According to ARA, the material was difficult to analyze and indicated that collecting new samples may not necessarily reduce the reporting limits.

PCB analytical results of the paint chip samples are provided in Table 2.

The PCB reporting limits were compared to the TSCA definition of a PCB bulk product waste (≥50 mg/kg), which would be required for removal and disposal under 40 CFR 761.62. Materials that contain total PCBs at a concentration of equal to or greater than 1 mg/kg but less than 50 mg/kg are not regulated by TSCA for disposal as long as they remain in use. However, if materials with those concentrations are removed from use, such as through demolition or renovation, they must be disposed at a facility that is licensed to accept this waste in accordance with state regulations. Building materials that contain total PCBs at a concentration of less than 1 mg/kg are unrestricted for future use and/or disposal [40 CFR 761.61(a)(4)(A)].

Four of the seven paint resamples (CA-PC-6, CA-PC-7, CA-PC-9, and CA-PC-11) were found to have reporting limits that exceed the 50 mg/kg threshold for PCB Bulk Product Waste, and conservatively should be managed as PCB Bulk Product Waste. These materials include gray paint on tanks and/or pipes, gray/black paint on the outer fibrous coating, and black paint on the pipes. The remaining three resamples (CA-PC-5, CA-PC-8, and CA-PC-10) were found to have reporting limits greater than 1 mg/kg and less than 50 mg/kg. If these materials (red paint on the tank and/or stairs and black or yellow paint on the stanchions) are removed, conservatively these materials should be disposed of at a facility licensed to accept PCBs at “as-found” concentrations.

PNSY, Building 72 Tanks 1 and 2 Page 5 of 5

If you have any questions or comments regarding this submittal, please do not hesitate to contact me at

(207) 828-1272 extension 41.

Sincerely, David E. Walker, PG Geologist/Project Manager

Attachments: Figure 1 – Sample Locations Table 1 – Asbestos Sample Results Table 2 – Paint Chip Analytical Results

Attachment A – Inspector Certification Documents Attachment B – Laboratory Reports Attachment C – April 18, 2005, Memorandum Testing of The Power Plant Day Tanks

FIGURES

SAMPLE LOCATIONS

dwalker Text Box Figure 1 Sample Locations -Portsmouth Naval Shipyard dwalker Line dwalker Typewritten Text N dwalker Text Box Building 72 dwalker Text Box Building 7 dwalker Text Box Suspect ACM samples:

CA-SACM-2 (A,B,C) White caulk (patches) CA-SACM-3 (A,B,C) Black woven/tar material (patches) CA-SACM-6 (A,B,C) Yellow Anti-skid bonded to tar RCRA Metals and PCBs Paint Chip Samples:

CA-PC-2 Gray/red/white/black layered paint on tanks CA-PC-4 Black/gray paint on tar woven material PCBs Paint Chip Samples:

CA-PC-5 - Red paint on tank exterior below foam insulation CA-PC-6 - Gray paint on pipes and tank exterior below foam insulation geoffrey.a.brown Line geoffrey.a.brown Line dwalker Text Box Suspect asbestos-containing material (ACM) samples:

CA-SACM-1 (A,B,C) Black/Gray foam insulation CA-SACM-4 (A,B,C) Black woven/tar material (Original) CA-SACM-5 (A,B,C) Black tar/caulk (around fittings) CA-SACM-7 (A,B,C) Black/gray, caulk/adhesive, top of tank

Resource Conservation and Recovery Act (RCRA) Metals and Polychlorinated biphenyls (PCBs) Paint Chip Samples:

CA-PC-1 Yellow Anti-skid paint on top of tanks CA-PC-3 Red/yellow layered paint on fittings, stairs, and portions of tanks PCBs Paint Chip Samples:

CA-PC-7 Gray/black paint on fiber outer cover CA-PC-11 Black paint on patched areas of fiber outer cover tpatten Text Box Suspect ACM samples:

CA-SACM-8 (A,B,C) - Containment Area, Grey, caulk, concrete wall seams/penetrations CA-SACM-9 (A,B,C) - Containment Area Grey, caulk, concrete wall meets asphalt PCBs Paint Chip Samples:

CA-PC-8 - Black/yellow paint on stanchions CA-PC-9 - Black paint on pipe hangers CA-PC-10 - Red paint on stairs tpatten Line

TABLES

Table 1 Asbestos Sample Results

Portsmouth Naval Shipyard Building 72 Exterior Tanks 1 and 2

Sample Number Task Area Sample Location Material/Color Asbestos Content Approximate

Quantity of ACM (unit)

CA-SACM-1 (A,B,C) Tank 2 Ground level of tank Foam Insulation, Black/gray ND NA

CA-SACM-2 (A,B,C) Tank 1 Top of tank Caulk, White ND NA

CA-SACM-3 (A,B,C) Tank 1 Ground level of tank Woven/tar (patches), Black/gray ND NA

CA-SACM-4 (A,B,C) Tank 2 Ground level of tank Woven/tar (Original), Black/gray ND NA

CA-SACM-5 (A,B,C) Tank 2 Around pipes and extrusions Tar/caulk, Black ND NA

CA-SACM-6 (A,B,C) Tank 1 Top of tank Anti-skid, Yellow ND NA

CA-SACM-7 (A,B,C) Tank 2 Top of tank Caulk/Adhesive, black/gray ND NA

CA-SACM-8 (A,B,C) Containment Containment Caulk, Gray ND NA

CA-SACM-9 (A,B,C) Containment Base Containment Base Caulk, Gray ND NA

Total # of Samples: 27 ND - None detected, sampled in triplicate Total Analyzed: 27

NA - Not applicable Bold - Positive detection of ACM exceeding or equal to 1%

Credere Associates, LLC 1 of 1

Table 2 Paint Chip Analytical Results Portsmouth Naval Shipyard

Building 72 Exterior Tanks 1 and 2

Sample ID Sample Date Sample Location Sample Description Regulatory Criteria*#

(mg/kg PCBs) (mg/l Metals)

Detected Analyte1^

Results (µg/g)

Laboratory Reporting

Limit (µg/g)

50/1 PCBs <170 170

100.0 Barium 160 5.0

1.0 Cadmium 0.59 0.50

5.0 Chromium 34 5.0

5.0 Lead 150 2.5

0.2 Mercury 27 14.0

50/1 PCBs <160 160

100.0 Barium 27 4.8

1.0 Cadmium 1.1 0.48

5.0 Chromium 2900 4.8

5.0 Lead 650 2.4

0.2 Mercury 1.3 0.14

50/1 PCBs <160 160

5.0 Arsenic 25 12

100.0 Barium 360 25

1.0 Cadmium 8.3 2.5

5.0 Chromium 14000 25

5.0 Lead 130000 120

0.2 Mercury 3.3 1.4

50/1 PCBs <740 740

100.0 Barium 45 2.5

1.0 Cadmium 0.67 0.49

5.0 Chromium 7.3 4.9

5.0 Lead 65 2.5

0.2 Mercury 45 14

PCBs Toluene

Extraction <1.2 1.2

PCBs

PCBs Toluene

Extraction <3.0 3.0

PCBs

<130 130

PCBs Toluene

Extraction <340 340

PCBs

<4.8 4.8

CA-PC-5 May 11, 2021

<650 650

PCBs

PCBs Toluene

Extraction

CA-PC-7 May 11, 2021 Fiber Outer Coating (Resample CA-PC-4) Gray/Black Paint

Tank Exterior Under Foam Insulators

(Resample CA-PC-2) Red Paint

CA-PC-8

<6.6 6.6

<1.7 1.7

CA-PC-6 May 11, 2021 Pipes & Tanks below foam insulation (Resample CA-PC-2)

Gray Paint

PCBs

PCBs Toluene

Extraction

<130 130

<67

CA-PC-1 March 22, 2021 Top of Tanks Yellow Anti-skid Paint

CA-PC-2 March 22, 2021 Tank Exteriors Layered Gray/Red/White Black Paint

CA-PC-3 March 22, 2021 Portions of Tanks, Associated Fittings and Stairs Layered Red/Yellow Paint

50/1

CA-PC-9 May 11, 2021 Pipe Hangers (Resample CA-PC-2) Black Paint

May 11, 2021 Stanchions

(Resample CA-PC-3 and

CA-PC-1)

Black and Yellow Paint

CA-PC-4 March 22, 2021 Paint on tar (coating) woven material Black and Gray Paint

Credere Associates LLC Page 1 of 2

Table 2 Paint Chip Analytical Results Portsmouth Naval Shipyard

Building 72 Exterior Tanks 1 and 2

Sample ID Sample Date Sample Location Sample Description Regulatory Criteria*#

(mg/kg PCBs) (mg/l Metals)

Detected Analyte1^

Results (µg/g)

Laboratory Reporting

Limit (µg/g)

NOTES:

(1) For RCRA Metals, only analytes detected above laboratory reporting limits are summarized herein.

µg/g = micrograms per gram ND = None Detected TSCA = Toxic Substances Control Act mg/l = milligrams per liter PCBs = Polychlorinated Biphenyls RCRA = Resource Conservation and Recovery Act

* - 40 CFR TSCA Part 761.3 definition of a PCB bulk product waste (≥ 50 mg/kg).

# Regulatory Limits from Table 1 Maximum Concentration of Contaminants for the Toxicity Characteristic found in 40 CFR Section §261.24.

≤ 1 ppm for PCB waste management without further conditions (see 40 CFR §761 .61(a)(4)(i)(A))

Bold font indicates detection above the laboratory reporting limit

^ - Individual arochlor concentrations are provided in the laboratory report.

Reporting limit exceeds TSCA regulatory criteria

PCBs Toluene

Extraction

PCBs Toluene

Extraction

Stairs (Resample CA-PC-3) Red Paint

PCBs

CA-PC-11 May 11, 2021 Tank Patches on Fiber Coating (Resample CA-PC-4) Black Paint

Exceeds 20 times the Toxicity Charateristic Leaching Procedure (TCLP) regulatory limit

50/1 PCBs

CA-PC-10 May 11, 2021

<140 140

<6.9 6.9

<5.3 5.3

<210 210

Credere Associates LLC Page 2 of 2

ATTACHMENT A

INSPECTOR CERTIFICATION DOCUMENTS

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ATTACHMENT B

LABORATORY REPORTS

EMSL Analytical, Inc.

161 John Roberts Road South Portland, ME 04106

Tel/Fax: (207) 517-6921 / (207) 517-6922 http://www.EMSL.com / portlandlab@emsl.com

EMSL Order: 622100487

Customer ID: CRED25

Customer PO:

Project ID:

Attention: David Walker Phone: (207) 828-1272

Credere Associates, LLC Fax: (207) 887-1051

776 Main Street Received Date: 03/23/2021 1:50 PM

Westbrook, ME 04092 Analysis Date: 03/30/2021

Collected Date: 03/22/2021

20001560PNSY BLDG 72 TanksProject:

Test Report: Asbestos Analysis of Non-Friable Organically Bound Materials by PLM via

EPA 600/R-93/116 section 2.3

Sample ID Description Appearance % Matrix Material % Non-Asbestos Fibers Asbestos Types

CA-SACM-1A

622100487-0001

Tank 2, Around outside tank - foam insulation, black/gray

Gray

Non-Fibrous

Homogeneous

100 None No Asbestos DetectedOther

HA: 01

CA-SACM-1B

622100487-0002

Tank 2, Around outside tank - foam insulation, black/gray

Gray

Non-Fibrous

Homogeneous

100 None No Asbestos DetectedOther

HA: 01

CA-SACM-1C

622100487-0003

Tank 2, Around outside tank - foam insulation, black/gray

Gray

Non-Fibrous

Homogeneous

100 None No Asbestos DetectedOther

HA: 01

CA-SACM-2A

622100487-0004

Tank 1, Patches outside -

White, caulk

White

Non-Fibrous

Homogeneous

100 None No Asbestos DetectedOther

HA: 02

CA-SACM-2B

622100487-0005

Tank 1, Patches outside -

White, caulk

White

Non-Fibrous

Homogeneous

100 None No Asbestos DetectedOther

HA: 02

CA-SACM-2C

622100487-0006

Tank 1, Patches outside -

White, caulk

White

Non-Fibrous

Homogeneous

100 None No Asbestos DetectedOther

HA: 02

CA-SACM-3A

622100487-0007

Tank 1, Patches outside -

Black, woven/tar material patches

Black

Non-Fibrous

Homogeneous

100 None No Asbestos DetectedOther

HA: 03

CA-SACM-3B

622100487-0008

Tank 1, Patches outside -

Black, woven/tar material patches

Black

Non-Fibrous

Homogeneous

100 None No Asbestos DetectedOther

HA: 03

CA-SACM-3C

622100487-0009

Tank 1, Patches outside -

Black, woven/tar material patches

Black

Non-Fibrous

Homogeneous

100 None No Asbestos DetectedOther

HA: 03

EMSL maintains liability limited to cost of analysis. Interpretation and use of test results are the responsibility of the client. This report relates only to the samples reported above, and may not be reproduced, except in full, without written approval by EMSL. EMSL bears no responsibility for sample collection activities or analytical method limitations. The report reflects the samples as received.

Results are generated from the field sampling data (sampling volumes and areas, locations, etc.) provided by the client on the Chain of Custody. Samples are within quality control criteria and met method specifications unless otherwise noted. This report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST or any agency of the federal government. Unless requested by the client, building materials manufactured with multiple layers (i.e. linoleum, wallboard, etc.) are reported as a single sample. Some samples may contain asbestos fibers present in dimensions below PLM resolution limits. EMSL suggests that samples reported as < 1% or none detected undergo additional analysis via TEM. Estimation of uncertainty is available on request.

Samples analyzed by EMSL Analytical, Inc. South Portland, ME NVLAP Lab Code 500094-0, MA AA000236, VT AL197271, ME LM-0039, CT PH-0346

Initial report from: 03/30/2021 12:16:15

ASB_PLMEPANOB_0012_0002 Printed 3/30/2021 12:16:30PM Page 1 of 3

Tel/Fax: (207) 517-6921 / (207) 517-6922 http://www.EMSL.com / portlandlab@emsl.com

EMSL Order: 622100487

Customer ID: CRED25

Customer PO:

Project ID:

Attention: David Walker Phone: (207) 828-1272

Credere Associates, LLC Fax: (207) 887-1051

776 Main Street Received Date: 03/23/2021 1:50 PM

Westbrook, ME 04092 Analysis Date: 03/30/2021

Collected Date: 03/22/2021

20001560PNSY BLDG 72 TanksProject:

Test Report: Asbestos Analysis of Non-Friable Organically Bound Materials by PLM via

EPA 600/R-93/116 section 2.3

Sample ID Description Appearance % Matrix Material % Non-Asbestos Fibers Asbestos Types

CA-SACM-4A

622100487-0010

Tank 2, Around outside tank, original - Black/gray woven/tar material original

Gray

Non-Fibrous

Homogeneous

76.0 Fibrous_Other No Asbestos Detected24.0Other

HA: 04

CA-SACM-4B

622100487-0011

Tank 2, Around outside tank, original - Black/gray woven/tar material original

Gray

Non-Fibrous

Homogeneous

81.3 Fibrous_Other No Asbestos Detected18.7Other

HA: 04

CA-SACM-4C

622100487-0012

Tank 2, Around outside tank, original - Black/gray woven/tar material original

Gray

Non-Fibrous

Homogeneous

83.4 Fibrous_Other No Asbestos Detected16.6Other

HA: 04

CA-SACM-5A

622100487-0013

Tank 2, Around Pipes and any extrusion point -

Black, tar/caulk around fittings

Black

Non-Fibrous

Homogeneous

81.8 Fibrous_Other No Asbestos Detected18.2Other

HA: 05

CA-SACM-5B

622100487-0014

Tank 2, Around Pipes and any extrusion point -

Black, tar/caulk around fittings

Black

Non-Fibrous

Homogeneous

89.7 Fibrous_Other No Asbestos Detected10.3Other

HA: 05

CA-SACM-5C

622100487-0015

Tank 2, Around Pipes and any extrusion point -

Black, tar/caulk around fittings

Black

Non-Fibrous

Homogeneous

82.2 Fibrous_Other No Asbestos Detected17.8Other

HA: 05

CA-SACM-6A

622100487-0016

Tank 1, Antiskid on top of tank - Yellow, anti-skid bonded to tar outside tank

Yellow

Non-Fibrous

Homogeneous

90.5 Fibrous_Other No Asbestos Detected9.5Other

HA: 06

CA-SACM-6B

622100487-0017

Tank 1, Antiskid on top of tank - Yellow, anti-skid bonded to tar outside tank

Yellow

Non-Fibrous

Homogeneous

99.1 Fibrous_Other No Asbestos Detected0.92Other

HA: 06

CA-SACM-6C

622100487-0018

Tank 1, Antiskid on top of tank - Yellow, anti-skid bonded to tar outside tank

Yellow

Non-Fibrous

Homogeneous

91.6 Fibrous_Other No Asbestos Detected8.4Other

HA: 06

EMSL maintains liability limited to cost of analysis. Interpretation and use of test results are the responsibility of the client. This report relates only to the samples reported above, and may not be reproduced, except in full, without written approval by EMSL. EMSL bears no responsibility for sample collection activities or analytical method limitations. The report reflects the samples as received.

Results are generated from the field sampling data (sampling volumes and areas, locations, etc.) provided by the client on the Chain of Custody. Samples are within quality control criteria and met method specifications unless otherwise noted. This report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST or any agency of the federal government. Unless requested by the client, building materials manufactured with multiple layers (i.e. linoleum, wallboard, etc.) are reported as a single sample. Some samples may contain asbestos fibers present in dimensions below PLM resolution limits. EMSL suggests that samples reported as < 1% or none detected undergo additional analysis via TEM. Estimation of uncertainty is available on request.

Samples analyzed by EMSL Analytical, Inc. South Portland, ME NVLAP Lab Code 500094-0, MA AA000236, VT AL197271, ME LM-0039, CT PH-0346

ASB_PLMEPANOB_0012_0002 Printed 3/30/2021 12:16:30PM Page 2 of 3

Tel/Fax: (207) 517-6921 / (207) 517-6922 http://www.EMSL.com / portlandlab@emsl.com

EMSL Order: 622100487

Customer ID: CRED25

Customer PO:

Project ID:

Attention: David Walker Phone: (207) 828-1272

Credere Associates, LLC Fax: (207) 887-1051

776 Main Street Received Date: 03/23/2021 1:50 PM

Westbrook, ME 04092 Analysis Date: 03/30/2021

Collected Date: 03/22/2021

20001560PNSY BLDG 72 TanksProject:

Test Report: Asbestos Analysis of Non-Friable Organically Bound Materials by PLM via

EPA 600/R-93/116 section 2.3

Sample ID Description Appearance % Matrix Material % Non-Asbestos Fibers Asbestos Types

ME BA-0197

Analyst(s)

Thomas Stegeman (18) Samantha Voigt, Laboratory Manager or other approved signatory

EMSL maintains liability limited to cost of analysis. Interpretation and use of test results are the responsibility of the client. This report relates only to the samples reported above, and may not be reproduced, except in full, without written approval by EMSL. EMSL bears no responsibility for sample collection activities or analytical method limitations. The report reflects the samples as received.

Results are generated from the field sampling data (sampling volumes and areas, locations, etc.) provided by the client on the Chain of Custody. Samples are within quality control criteria and met method specifications unless otherwise noted. This report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST or any agency of the federal government. Unless requested by the client, building materials manufactured with multiple layers (i.e. linoleum, wallboard, etc.) are reported as a single sample. Some samples may contain asbestos fibers present in dimensions below PLM resolution limits. EMSL suggests that samples reported as < 1% or none detected undergo additional analysis via TEM. Estimation of uncertainty is available on request.

Samples analyzed by EMSL Analytical, Inc. South Portland, ME NVLAP Lab Code 500094-0, MA AA000236, VT AL197271, ME LM-0039, CT PH-0346

ASB_PLMEPANOB_0012_0002 Printed 3/30/2021 12:16:30PM Page 3 of 3

OrderID: 622100487

Tel/Fax: (207) 517-6921 / (207) 517-6922 http://www.EMSL.com / portlandlab@emsl.com

EMSL Order: 622100715

Customer ID: CRED25

Customer PO:

Project ID:

Attention: David Walker Phone: (207) 828-1272

Credere Associates, LLC Fax: (207) 887-1051

776 Main Street Received Date: 05/04/2021 2:15 PM

Westbrook, ME 04092 Analysis Date: 05/10/2021

Collected Date:

20001560 / NAVFAC ENV SERVICEProject:

Test Report: Asbestos Analysis of Non-Friable Organically Bound Materials by PLM via

EPA 600/R-93/116 section 2.3

Sample ID Description Appearance % Matrix Material % Non-Asbestos Fibers Asbestos Types

CA-SACM-7A

622100715-0001

Building 72 Day Tank #2

Top - Black Gray -

Caulk/Adhesive

Black

Fibrous

Homogeneous

85.0 Glass

Fibrous_Other

No Asbestos Detected7.5

7.5

Other

CA-SACM-7B

622100715-0002

Building 72 Day Tank #2

Top - Black Gray -

Caulk/Adhesive

Black

Fibrous

Homogeneous

59.6 Glass

Fibrous_Other

No Asbestos Detected20.2

20.2

Other

CA-SACM-7C

622100715-0003

Building 72 Day Tank #2

Top - Black Gray -

Caulk/Adhesive

Black

Non-Fibrous

Homogeneous

63.2 Glass

Fibrous_Other

No Asbestos Detected18.4

18.4

Other

ME BA-0197

Analyst(s)

Thomas Stegeman (3) Samantha Voigt, Laboratory Manager or other approved signatory

EMSL maintains liability limited to cost of analysis. Interpretation and use of test results are the responsibility of the client. This report relates only to the samples reported above, and may not be reproduced, except in full, without written approval by EMSL. EMSL bears no responsibility for sample collection activities or analytical method limitations. The report reflects the samples as received.

Results are generated from the field sampling data (sampling volumes and areas, locations, etc.) provided by the client on the Chain of Custody. Samples are within quality control criteria and met method specifications unless otherwise noted. This report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST or any agency of the federal government. Unless requested by the client, building materials manufactured with multiple layers (i.e. linoleum, wallboard, etc.) are reported as a single sample. Some samples may contain asbestos fibers present in dimensions below PLM resolution limits. EMSL suggests that samples reported as < 1% or none detected undergo additional analysis via TEM. Estimation of uncertainty is available on request.

Samples analyzed by EMSL Analytical, Inc. South Portland, ME NVLAP Lab Code 500094-0, NY ELAP 12129, MA AA000236, VT AL197271, ME LM-0039, CT PH-0346

Initial report from: 05/11/2021 10:38:25

ASB_PLMEPANOB_0012_0002 Printed 5/11/2021 10:38:47AM Page 1 of 1

OrderID: 622100715

Tel/Fax: (207) 517-6921 / (207) 517-6922 http://www.EMSL.com / portlandlab@emsl.com

EMSL Order: 622100773

Customer ID: CRED25

Customer PO:

Project ID:

Attention: David Walker Phone: (207) 828-1272

Credere Associates, LLC Fax: (207) 887-1051

776 Main Street Received Date: 05/14/2021 5:30 PM

Westbrook, ME 04092 Analysis Date: 05/20/2021

Collected Date: 05/13/2021

20001560Project:

Test Report: Asbestos Analysis of Non-Friable Organically Bound Materials by PLM via

EPA 600/R-93/116 section 2.3

Sample ID Description Appearance % Matrix Material % Non-Asbestos Fibers Asbestos Types

CA-SACM-8A

622100773-0001

Bldg 72-day tank containment - caulk (gray)

Gray

Non-Fibrous

Homogeneous

100 None No Asbestos DetectedOther

CA-SACM-8B

622100773-0002

Bldg 72-day tank containment - caulk (gray)

Gray

Non-Fibrous

Homogeneous

100 None No Asbestos DetectedOther

CA-SACM-8C

622100773-0003

Bldg 72-day tank containment - caulk (gray)

Gray

Non-Fibrous

Homogeneous

100 None No Asbestos DetectedOther

CA-SACM-9A

622100773-0004

Bldg 72-day tank containment base - caulk

(gray)

Gray

Non-Fibrous

Homogeneous

100 None No Asbestos DetectedOther

CA-SACM-9B

622100773-0005

Bldg 72-day tank containment base - caulk

(gray)

Gray

Non-Fibrous

Homogeneous

100 None No Asbestos DetectedOther

CA-SACM-9C

622100773-0006

Bldg 72-day tank containment base - caulk

(gray)

Gray

Non-Fibrous

Homogeneous

100 None No Asbestos DetectedOther

ME BA-0197

Analyst(s)

Thomas Stegeman (6) Samantha Voigt, Laboratory Manager or other approved signatory

EMSL maintains liability limited to cost of analysis. Interpretation and use of test results are the responsibility of the client. This report relates only to the samples reported above, and may not be reproduced, except in full, without written approval by EMSL. EMSL bears no responsibility for sample collection activities or analytical method limitations. The report reflects the samples as received.

Results are generated from the field sampling data (sampling volumes and areas, locations, etc.) provided by the client on the Chain of Custody. Samples are within quality control criteria and met method specifications unless otherwise noted. This report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST or any agency of the federal government. Unless requested by the client, building materials manufactured with multiple layers (i.e. linoleum, wallboard, etc.) are reported as a single sample. Some samples may contain asbestos fibers present in dimensions below PLM resolution limits. EMSL suggests that samples reported as < 1% or none detected undergo additional analysis via TEM. Estimation of uncertainty is available on request.

Samples analyzed by EMSL Analytical, Inc. South Portland, ME NVLAP Lab Code 500094-0, NY ELAP 12129, MA AA000236, VT AL197271, ME LM-0039, CT PH-0346

Initial report from: 05/21/2021 09:55:54

ASB_PLMEPANOB_0012_0002 Printed 5/21/2021 9:56:06AM Page 1 of 1

OrderID: 622100773

Project: NAVFAC ENV SERVICE BLDG 72 TANKS 20001560

56290Job ID:

PO Number: None

3/24/21Date Received:

David Walker

776 Main Street

CREDERE Associates

Westbrook, ME 04092

Unless otherwise noted in the attached report, the analyses performed met the requirements of Absolute Resource Associates' Quality Assurance Plan. The Standard Operating Procedures are based upon USEPA SW-846, USEPA Methods for Chemical Analysis of Water and Wastewater, Standard Methods for the Examination of Water and Wastewater and other recognized methodologies. The results contained in this report pertain only to the samples as indicated on the chain of custody.

Absolute Resource Associates maintains certification with the agencies listed below. The reported results apply to the sample(s) in the condition as received at the time the laboratory took custody. This report shall not be reproduced except in full, without written approval of the laboratory. The liability of ARA is limited to the cost of the requested analyses, unless otherwise agreed upon in writing.

We appreciate the opportunity to provide laboratory services. If you have any questions regarding the enclosed report, please contact the laboratory and we will be glad to assist you.

Total number of pages:

Date of Approval:

Sincerely, Absolute Resource Associates

Attached please find results for the analysis of the samples received on the date referenced above.

4/8/2021

Aaron DeWees

Chief Operating Officer

124 Heritage Avenue Portsmouth NH 03801

Laboratory Report

124 Heritage Avenue | Portsmouth, NH 03801 | 603-436-2001 | absoluteresourceassociates.com

Absolute Resource Associates Certifications

New Hampshire Maine NH902

1732 Massachusetts M-NH902

NAVFAC ENV SERVICE BLDG 72 TANKS 20001560Project ID:

Sample Association Table

Lab#MatrixField ID Date-Time Sampled Analysis

Solid 56290-001CA-PC-1 3/22/2021 11:30

Arsenic in solids by 6020

Barium in solids by 6020 Cadmium in solids by 6020

Chromium in solids by 6020 Combo: RCRA 8 Metals Lead in solids by 6020 Mercury in solids by 7471

PCBs in solids by Soxhlet 8082 Report as received

Selenium in solids by 6020 Silver in solids by 6020

Solids Digestion for ICPMS Analysis

Solid 56290-002CA-PC-2 3/22/2021 12:00

Arsenic in solids by 6020

Barium in solids by 6020 Cadmium in solids by 6020

Chromium in solids by 6020 Combo: RCRA 8 Metals Lead in solids by 6020 Mercury in solids by 7471

PCBs in solids by Soxhlet 8082 Report as received

Selenium in solids by 6020 Silver in solids by 6020

Solids Digestion for ICPMS Analysis

Solid 56290-003CA-PC-3 3/22/2021 12:20

Arsenic in solids by 6020

Barium in solids by 6020 Cadmium in solids by 6020

Chromium in solids by 6020 Combo: RCRA 8 Metals Lead in solids by 6020 Mercury in solids by 7471

PCBs in solids by Soxhlet 8082 Report as received

Selenium in solids by 6020 Silver in solids by 6020

Solids Digestion for ICPMS Analysis

Lab#MatrixField ID Date-Time Sampled Analysis

Solid 56290-004CA-PC-4 3/22/2021 13:00

Arsenic in solids by 6020

Barium in solids by 6020 Cadmium in solids by 6020

Chromium in solids by 6020 Combo: RCRA 8 Metals Lead in solids by 6020 Mercury in solids by 7471

PCBs in solids by Soxhlet 8082 Report as received

Selenium in solids by 6020 Silver in solids by 6020

Solids Digestion for ICPMS Analysis

CA-PC-1

Solid

Sample ID:

Matrix:

Parameter Result Analysis

Date Time

Sample#:

Reporting Limit Reference

3/22/21 11:30Sampled:

56290-001

Analyst Instr Dil'n

FactorUnits Prep Date Batch

Results expressed on a weight as received basis.

PCB-1016 4/2/21< 170 170 SW3540C8082A100 18:38ug/g DBV 3/29/21 13732

PCB-1221 4/2/21< 170 170 SW3540C8082A100 18:38ug/g DBV 3/29/21 13732

PCB-1232 4/2/21< 170 170 SW3540C8082A100 18:38ug/g DBV 3/29/21 13732

PCB-1242 4/2/21< 170 170 SW3540C8082A100 18:38ug/g DBV 3/29/21 13732

PCB-1248 4/2/21< 170 170 SW3540C8082A100 18:38ug/g DBV 3/29/21 13732

PCB-1254 4/2/21< 170 170 SW3540C8082A100 18:38ug/g DBV 3/29/21 13732

PCB-1260 4/2/21< 170 170 SW3540C8082A100 18:38ug/g DBV 3/29/21 13732 tetrachloro-m-xylene SUR 4/2/21DOR SW3540C8082A100 18:38% DBV 3/29/2130-150

Surrogate Recovery Limits

13732 decachlorobiphenyl SUR 4/2/21DOR SW3540C8082A100 18:38% DBV 3/29/2130-150 13732

Note: Elevated reporting limit and dilution was necessary due to matrix interference.

DOR = Diluted out of range.

SPACE

CA-PC-2

Solid

Sample ID:

Matrix:

Parameter Result Analysis

Date Time

Sample#:

Reporting Limit Reference

3/22/21 12:00Sampled:

56290-002

Analyst Instr Dil'n

FactorUnits Prep Date Batch

Results expressed on a weight as received basis.

PCB-1016 4/2/21< 160 160 SW3540C8082A100 18:53ug/g DBV 3/29/21 13732

PCB-1221 4/2/21< 160 160 SW3540C8082A100 18:53ug/g DBV 3/29/21 13732

PCB-1232 4/2/21< 160 160 SW3540C8082A100 18:53ug/g DBV 3/29/21 13732

PCB-1242 4/2/21< 160 160 SW3540C8082A100 18:53ug/g DBV 3/29/21 13732

PCB-1248 4/2/21< 160 160 SW3540C8082A100 18:53ug/g DBV 3/29/21 13732

PCB-1254 4/2/21< 160 160 SW3540C8082A100 18:53ug/g DBV 3/29/21 13732

PCB-1260 4/2/21< 160 160 SW3540C8082A100 18:53ug/g DBV 3/29/21 13732 tetrachloro-m-xylene SUR 4/2/21DOR SW3540C8082A100 18:53% DBV 3/29/2130-150

Surrogate Recovery Limits

13732 decachlorobiphenyl SUR 4/2/21DOR SW3540C8082A100 18:53% DBV 3/29/2130-150 13732

Note: Elevated reporting limit and dilution was necessary due to matrix interference.

DOR = Diluted out of range.

SPACE

CA-PC-3

Solid

Sample ID:

Matrix:

Parameter Result Analysis

Date Time

Sample#:

Reporting Limit Reference

3/22/21 12:20Sampled:

56290-003

Analyst Instr Dil'n

FactorUnits Prep Date Batch

Results expressed on a weight as received basis.

PCB-1016 4/2/21< 160 160 SW3540C8082A100 19:08ug/g DBV 3/29/21 13732

PCB-1221 4/2/21< 160 160 SW3540C8082A100 19:08ug/g DBV 3/29/21 13732

PCB-1232 4/2/21< 160 160 SW3540C8082A100 19:08ug/g DBV 3/29/21 13732

PCB-1242 4/2/21< 160 160 SW3540C8082A100 19:08ug/g DBV 3/29/21 13732

PCB-1248 4/2/21< 160 160 SW3540C8082A100 19:08ug/g DBV 3/29/21 13732

PCB-1254 4/2/21< 160 160 SW3540C8082A100 19:08ug/g DBV 3/29/21 13732

PCB-1260 4/2/21< 160 160 SW3540C8082A100 19:08ug/g DBV 3/29/21 13732 tetrachloro-m-xylene SUR 4/2/21DOR SW3540C8082A100 19:08% DBV 3/29/2130-150

Surrogate Recovery Limits

13732 decachlorobiphenyl SUR 4/2/21DOR SW3540C8082A100 19:08% DBV 3/29/2130-150 13732

Note: Elevated reporting limit and dilution was necessary due to matrix interference.

DOR = Diluted out of range.

SPACE

CA-PC-4

Solid

Sample ID:

Matrix:

Parameter Result Analysis

Date Time

Sample#:

Reporting Limit Reference

3/22/21 13:00Sampled:

56290-004

Analyst Instr Dil'n

FactorUnits Prep Date Batch

Results expressed on a weight as received basis.

PCB-1016 4/2/21< 740 740 SW3540C8082A100 19:23ug/g DBV 3/29/21 13732

PCB-1221 4/2/21< 740 740 SW3540C8082A100 19:23ug/g DBV 3/29/21 13732

PCB-1232 4/2/21< 740 740 SW3540C8082A100 19:23ug/g DBV 3/29/21 13732

PCB-1242 4/2/21< 740 740 SW3540C8082A100 19:23ug/g DBV 3/29/21 13732

PCB-1248 4/2/21< 740 740 SW3540C8082A100 19:23ug/g DBV 3/29/21 13732

PCB-1254 4/2/21< 740 740 SW3540C8082A100 19:23ug/g DBV 3/29/21 13732

PCB-1260 4/2/21< 740 740 SW3540C8082A100 19:23ug/g DBV 3/29/21 13732 tetrachloro-m-xylene SUR 4/2/21DOR SW3540C8082A100 19:23% DBV 3/29/2130-150

Surrogate Recovery Limits

13732 decachlorobiphenyl SUR 4/2/21DOR SW3540C8082A100 19:23% DBV 3/29/2130-150 13732

Note: Elevated reporting limit and dilution was necessary due to matrix interference.

DOR = Diluted out of range.

CA-PC-1

Solid

Sample ID:

Matrix:

Parameter Result Analysis

Date Time

Sample#:

Reporting Limit Reference

3/22/21 11:30Sampled:

56290-001

Analyst Instr Dil'n

FactorUnits Prep Date Batch

Results expressed on a weight as received basis.

Arsenic 3/30/21< 2.5 2.5 SW3051A6020A5 0:23ug/g AGN 3/29/21 13729

Barium 3/30/21160 5.0 SW3051A6020A5 0:23ug/g AGN 3/29/21 13729

Cadmium 3/30/210.59 0.50 SW3051A6020A5 0:23ug/g AGN 3/29/21 13729

Chromium 3/30/2134 5.0 SW3051A6020A5 0:23ug/g AGN 3/29/21D

D = The RPD for the sample duplicate, run as internal QC, was outside the 20% acceptance range.

13729

Lead 3/30/21150 2.5 SW3051A6020A5 0:23ug/g AGN 3/29/21 13729

Mercury 3/25/2127 14 SW7471B100 15:21ug/g EEB 3/25/21 13720

Selenium 3/30/21< 5.0 5.0 SW3051A6020A5 0:23ug/g AGN 3/29/21M

M = The recovery for the matrix spike was 74%. The acceptance criteria is 75-125%.

13729

Silver 3/30/21< 2.5 2.5 SW3051A6020A5 0:23ug/g AGN 3/29/21 13729

CA-PC-2

Solid

Sample ID:

Matrix:

Parameter Result Analysis

Date Time

Sample#:

Reporting Limit Reference

3/22/21 12:00Sampled:

56290-002

Analyst Instr Dil'n

FactorUnits Prep Date Batch

Results expressed on a weight as received basis.

Arsenic 3/30/21< 2.4 2.4 SW3051A6020A5 1:13ug/g AGN 3/29/21 13729

Barium 3/30/2127 4.8 SW3051A6020A5 1:13ug/g AGN 3/29/21 13729

Cadmium 3/30/211.1 0.48 SW3051A6020A5 16:26ug/g AGN 3/29/21 13729

Chromium 3/30/212900 4.8 SW3051A6020A5 1:13ug/g AGN 3/29/21 13729

Lead 3/30/21650 2.4 SW3051A6020A5 1:13ug/g AGN 3/29/21 13729

Mercury 3/25/211.3 0.14 SW7471B1 15:28ug/g EEB 3/25/21 13720

Selenium 3/30/21< 4.8 4.8 SW3051A6020A5 1:13ug/g AGN 3/29/21 13729

Silver 3/30/21< 2.4 2.4 SW3051A6020A5 1:13ug/g AGN 3/29/21 13729

CA-PC-3

Solid

Sample ID:

Matrix:

Parameter Result Analysis

Date Time

Sample#:

Reporting Limit Reference

3/22/21 12:20Sampled:

56290-003

Analyst Instr Dil'n

FactorUnits Prep Date Batch

Results expressed on a weight as received basis.

Arsenic 3/30/2125 12 SW3051A6020A25 16:43ug/g AGN 3/29/21 13729

Barium 3/30/21360 25 SW3051A6020A25 16:43ug/g AGN 3/29/21 13729

Cadmium 3/30/218.3 2.5 SW3051A6020A25 16:43ug/g AGN 3/29/21 13729

Chromium 3/30/2114000 25 SW3051A6020A25 16:43ug/g AGN 3/29/21 13729

Lead 3/30/21130000 120 SW3051A6020A250 16:35ug/g AGN 3/29/21 13729

Mercury 3/25/213.3 1.4 SW7471B10 15:24ug/g EEB 3/25/21 13720

Selenium 3/30/21< 25 25 SW3051A6020A25 16:43ug/g AGN 3/29/21 13729

Silver 3/30/21< 12 12 SW3051A6020A25 16:43ug/g AGN 3/29/21 13729

CA-PC-4

Solid

Sample ID:

Matrix:

Parameter Result Analysis

Date Time

Sample#:

Reporting Limit Reference

3/22/21 13:00Sampled:

56290-004

Analyst Instr Dil'n

FactorUnits Prep Date Batch

Results expressed on a weight as received basis.

Arsenic 3/30/21< 2.5 2.5 SW3051A6020A5 1:30ug/g AGN 3/29/21 13729

Barium 3/30/2145 4.9 SW3051A6020A5 1:30ug/g AGN 3/29/21 13729

Cadmium 3/30/210.67 0.49 SW3051A6020A5 1:30ug/g AGN 3/29/21 13729

Chromium 3/30/217.3 4.9 SW3051A6020A5 17:00ug/g AGN 3/29/21 13729

Lead 3/31/2165 2.5 SW3051A6020A5 13:17ug/g AGN 3/29/21 13729

Mercury 3/25/2145 14 SW7471B100 15:26ug/g EEB 3/25/21 13720

Selenium 3/30/21< 4.9 4.9 SW3051A6020A5 1:30ug/g AGN 3/29/21 13729

Silver 3/30/21< 2.5 2.5 SW3051A6020A5 1:30ug/g AGN 3/29/21 13729

124 Heritage Avenue Unit 16 Portsmouth, NH 03801 www.absoluteresourceassociates.com

Quality Control Report

Case Narrative Lab # 56290

Sample Receiving and Chain of Custody Discrepancies Samples were received in acceptable condition, between 0 and 6 degrees C, on ice, and in accordance with sample handling, preservation and integrity guidelines.

Calibration No exceptions noted.

Method Blank No exceptions noted.

Surrogate Recoveries PCB: The surrogates were diluted out of the calibration range in the following samples: 56290-001 through - 004.

Laboratory Control Sample Results No exceptions noted.

Matrix Spike/Matrix Spike Duplicate/Duplicate Results Metals: The relative percent difference between the sample and sample duplicate analysis for sample 56290- 001 was outside the acceptance criteria for Chromium. All other batch QC was within acceptance. The results have been qualified accordingly.

Metals: The percent recovery for Selenium in the matrix spike (56290-001) was 74%, outside the acceptance criteria of 75-125%. All other batch QC was within acceptance. The results have been qualified accordingly.

Other PCB: Sample dilution and elevated reporting limits were required for 56290-001 through -004 due to matrix interferences.

Reporting Limits: Dilutions performed during the analysis are noted on the result pages.

No other exceptions noted.

GLOSSARY

%R Percent Recovery

BLK Blank (Method Blank, Preparation Blank)

CCB Continuing Calibration Blank

CCV Continuing Calibration Verification

CRM Certified Reference Material (associated with solid Metals samples)

CRMD Certified Reference Material Duplicate (associated with solid Metals samples)

Dil’n Dilution

DL Detection Limit

DUP Duplicate

LCS Laboratory Control Sample

LCSD Laboratory Control Sample Duplicate

LOD Limit of Detection

LOQ Limit of Quantitation

MB Methanol Blank (associated with solid VOC samples)

MLCS Methanol Laboratory Control Sample (associated with solid VOC samples)

MLCSD Methanol Laboratory Control Sample Duplicate (associated with solid VOC samples)

MS Matrix Spike

MSD Matrix Spike Duplicate

PB Preparation Blank

QC Quality Control

RL Reporting Limit

RPD Relative Percent Difference

SUR Surrogate

124 Heritage Avenue Unit 16 Portsmouth, NH 03801 www.absoluteresourceassociates.com

- QC Report - Parameter Result Units %R RPDLimitsAmt Added RPD LimitAssociated SampleParameterQC IDMethod

0.10.17 ug/g<PB13732BLK13732 PCB-1016SW3540C8082A

0.10.17 ug/g<PB13732PCB-1221

0.10.17 ug/g<PB13732PCB-1232

0.10.17 ug/g<PB13732PCB-1242

0.10.17 ug/g<PB13732PCB-1248

0.10.17 ug/g<PB13732PCB-1254

0.10.17 ug/g<PB13732PCB-1260

30 15075 %PB13732tetrachloro-m-xylene SUR

30 15066 %PB13732decachlorobiphenyl SUR

40 1402.5 ug/g 3.33LCS13732LCS13732 PCB-1016 75SW3540C8082A 75

0.17 ug/g<LCS13732PCB-1221

0.17 ug/g<LCS13732PCB-1232

0.17 ug/g<LCS13732PCB-1242

0.17 ug/g<LCS13732PCB-1248

0.17 ug/g<LCS13732PCB-1254

40 1402.5 ug/g 3.33LCS13732PCB-1260 7575

30 15071 %LCS13732tetrachloro-m-xylene SUR

30 15072 %LCS13732decachlorobiphenyl SUR

40 1402.7 ug/g 93.33 30LCSD1373LCSD13732 PCB-1016 82SW3540C8082A 82

0.17 ug/g<LCSD1373PCB-1221

0.17 ug/g<LCSD1373PCB-1232

0.17 ug/g<LCSD1373PCB-1242

0.17 ug/g<LCSD1373PCB-1248

0.17 ug/g<LCSD1373PCB-1254

40 1402.7 ug/g 73.33 30LCSD1373PCB-1260 8080

30 15078 %LCSD1373tetrachloro-m-xylene SUR

30 15075 %LCSD1373decachlorobiphenyl SUR

0.0052.5 ug/g<PB 13729BLK13729 SilverSW3051A6020A

0.0052.5 ug/g<PB 13729Arsenic

0.015.0 ug/g<PB 13729Barium

0.0010.50 ug/g<PB 13729Cadmium

0.015.0 ug/g<PB 13729Chromium

0.0052.5 ug/g<PB 13729Lead

0.015.0 ug/g<PB 13729Selenium

34.6 64.344.4 ug/g 57.3CRM 13729CRM13729 Silver 44.4SW3051A6020A

73.6 13993.7 ug/g 126CRM 13729Arsenic 93.7

139 245179 ug/g 223CRM 13729Barium 179

66.6 11682.9 ug/g 106CRM 13729Cadmium 82.9

105 196137 ug/g 178CRM 13729Chromium 137

152 273204 ug/g 248CRM 13729Lead 204

111 217145 ug/g 196CRM 13729Selenium 145

34.6 64.344.9 ug/g 157.3 20CRMD CRMD13729 Silver 44.9SW3051A6020A

73.6 13993.8 ug/g 0126 20CRMD Arsenic 93.8

139 245175 ug/g 2223 20CRMD Barium 175

66.6 11682.8 ug/g 0106 20CRMD Cadmium 82.8

105 196132 ug/g 4178 20CRMD Chromium 132

152 273204 ug/g 0248 20CRMD Lead 204

111 217138 ug/g 5196 20CRMD Selenium 138

2.5 ug/g< 2056290-001DUP13729 SilverSW3051A6020A

2.5 ug/g< 2056290-001Arsenic

200 ug/g 2056290-001Barium 17

0.60 ug/g 2056290-001Cadmium 2

46 ug/g * 2056290-001Chromium 31 *

160 ug/g 2056290-001Lead 3

5.0 ug/g< 2056290-001Selenium

75 125120 ug/g 12556290-001MS13729 Silver 93SW3051A6020A 93

75 125190 ug/g 25056290-001Arsenic 7676

75 125430 ug/g 25056290-001Barium 108108

75 125240 ug/g 25056290-001Cadmium 9494

75 125250 ug/g 25056290-001Chromium 8888

75 125410 ug/g 25056290-001Lead 102102

75 125180 ug/g *25056290-001Selenium 74 *74

0.00090.14 ug/g<PB13720BLK13720 MercurySW7471B

0.0908 0.3510.231 ug/g 0.221CRM13720CRM13720 Mercury 0.23SW7471B

0.0908 0.3510.234 ug/g 10.221 35CRMD1372CRMD13720 Mercury 0.23SW7471B

0.15 ug/g< 3556253-001DUP13720 MercurySW7471B

80 1200.40 ug/g *0.32756253-001MS13720 Mercury 121 *SW7471B 121

PAGE / OF j

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603-436-2001

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