Full Report - 102-B Intrepid Ct.pdf

United States Coast Guard Safe Homes Initiative Environmental Risk Assessment Report United States Coast Guard – Base Kodiak P.O. Box 195011 Kodiak, AK 99615 Address: 102-B Intrepid Ct

SAMS RPUID: 64056

HMIS Housing Unit # G170039

August 12, 2020

PRESENTED TO PRESENTED BY

United States Coast Guard John Laird Housing Manager P.O. Box 195011, Kodiak, AK 99615

Tetra Tech, Inc.

415 Oak Street Kansas City, MO 64106

(816) 412-1741

Zach Usher EPA Asbestos Inspector & Lead Risk Assessor/Inspector

Environmental Risk Assessment i United States Coast Guard Kodiak, Alaska

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EXECUTIVE SUMMARY

The United States Coast Guard (USCG) contracted Tetra Tech, Inc. (Tetra Tech) to conduct an environmental risk assessment of residential units at the USCG Base Kodiak, in Kodiak, Alaska. The primary purpose of the assessment was to assess potential impacts of asbestos, lead-based paint (LBP), lead dust, lead in soils, and radon at 139 residential units at the site.

The following is a summary of findings from the assessment of 102-B Intrepid (SAMS RPUID: 64056 /

HMIS Housing Unit # G170039) based on observations during the assessment and analytical results from samples collected at the residential unit:

Limited Non-Destructive Asbestos Inspection Suspected asbestos-containing material (ACM) was collected for analysis by polarized light microscopy

(PLM). No regulated ACM was identified within the areas inspected at the residential unit. However, suspect ACM not sampled was identified in the following areas:

• Approximately 2,600 square feet (SF) of vinyl flooring and associated mastic were identified in the common areas. Due to limits on destructive sampling, the material has been identified as a suspect ACM.

• Approximately 1,200 SF of carpet adhesive with associated mastic were identified in the bedrooms. Due to limits on destructive sampling, the material has been identified as a suspect

ACM.

• Approximately 40 SF of bathtub mastic was identified in the bathroom. Due to limits on destructive sampling, the material has been identified as a suspect ACM.

• Approximately 40 linear feet (LF) of cove base and associated mastic were identified in the basement. Due to limits on destructive sampling, the material has been identified as a suspect

ACM.

• Approximately 1,000 SF of exterior vapor barrier was identified on the building exterior. Due to limits on destructive sampling, the material has been identified as a suspect ACM.

LBP Inspection Paint-covered surfaces on the interior and exterior of the residential unit were screened for lead using an x-ray fluorescence (XRF) analyzer. The Department of Housing and Urban Development (HUD) considers LBP as paint with lead levels above 1.0 milligram per square centimeter (mg/cm2).

The following painted surfaces tested positive for LBP (by use of the X-ray fluorescence [XRF] spectrometer):

• Approximately 4 SF of white paint on the basement crawl space door. XRF results indicated a level of 3.6 mg/cm2.

• Approximately 30 LF of white paint on the exterior wood beam. XRF results indicated a level of

15.9 mg/cm2.

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• Approximately 12 LF of tan paint on the exterior wood beam. XRF results indicated a level of 17.9 mg/cm2.

Lead Dust Wipe Samples Dust wipe samples were collected on the interior of the residential unit, and results were compared to the

U.S. Environmental Protection Agency (EPA) and HUD interpretation standards of cleanup of

<10 micrograms of lead per square foot (µg/ft2) for interior floors, <40 µg/ft2 of lead for porch floors, <100 µg/ft2 of lead for window sills, and <100 µg/ft2 of lead for window troughs.

The following lead dust wipe sample analytical results indicated levels above the EPA and HUD interpretation standards of cleanup:

• Storage Room Floor. Analytical results indicated a level of 10 µg/ft2.

• Storage Room Floor duplicate. Analytical results indicated a level of 17 µg/ft2.

Lead Soil Samples EPA regulations define a soil-lead hazard as either of the following: (1) bare soil in a play area on residential real property or on the property of a child-occupied facility that contains total lead equal to or exceeding 400 milligrams per kilograms (mg/Kg), or (2) bare soil in a non-play area on residential real property or on the property of a child-occupied facility that contains total lead equal to or exceeding 1,200 mg/kg; these non-play areas can be in the dripline/foundation area and/or the rest of the yard (including gardens, pet sleeping areas, bare paths, and other spots). Lead concentrations in the soil sample(s) were below these EPA-recommended action levels.

Radon Sampling Radon concentration in the sample was below the EPA-recommended action guideline of 4 picocuries per liter (pCi/L).

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TABLE OF CONTENTS

EXECUTIVE SUMMARY ............................................................................................................................... I

1.0 INTRODUCTION

2.0 ASBESTOS SURVEY AND ANALYTICAL PROTOCOLS

3.0 ASBESTOS SURVEY FINDINGS

4.0 LBP INSPECTION AND LEAD ASSESSMENT ANALYTICAL PROTOCOLS

5.0 LBP INSPECTION AND LEAD ASSESSMENT FINDINGS

6.0 RADON ASSESSMENT ANALYTICAL PROTOCOLS

7.0 RADON ASSESSMENT FINDINGS

8.0 ASSUMPTIONS AND DEVIATIONS

9.0 REFERENCES

APPENDICES

APPENDIX A PHOTOLOG

APPENDIX B INSPECTOR CERTIFICATIONS

APPENDIX C ASBESTOS ANALYTICAL RESULTS AND CHAIN-OF-CUSTODY FORMS

APPENDIX D LEAD ANALYTICAL RESULTS AND CHAIN-OF-CUSTODY FORMS

APPENDIX E RADON ANALYTICAL RESULTS AND CHAIN-OF-CUSTODY FORMS

TABLES

TABLE 1 SUMMARY OF SUSPECT ASBESTOS SURVEY LABORATORY ANALYSIS

TABLE 2 SUMMARY OF XRF SCREENING LOCATIONS

TABLE 3 SUMMARY OF LEAD DUST WIPE SAMPLES ANALYZED

TABLE 4 SUMMARY OF SOIL SAMPLES ANALYZED

TABLE 5 SUMMARY OF RADON SAMPLE ANALYZED

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1.0 INTRODUCTION

The United States Coast Guard (USCG) contracted Tetra Tech, Inc. (Tetra Tech) to conduct an environmental risk assessment of residential units at the USCG Base Kodiak, in Kodiak, Alaska. The primary purpose of the assessment was to assess potential impacts of asbestos, lead-based paint (LBP), lead dust, lead in soils, and radon at each of the residential units. Appendix A includes a photographic log of observations during the assessment.

Tetra Tech’s Project Manager for the assessment was Mr. Jeffrey Mitchell, Certified Asbestos and LBP

Inspector. The assessment team included Mr. Zach Usher, Mr. Ryan Slanczka, Mr. Glenn Hasburgh, and

Ms. Hannah Deeney, all licensed U.S. Environmental Protection Agency (EPA) Asbestos Hazard and

Emergency Response Act (AHERA) Asbestos Inspectors and EPA Lead Risk Assessors/Inspectors, and

Mr. Phil Jarrett, Ms. Bethany Williams and Mr. Andy Coulson, licensed AHERA Asbestos Inspectors.

Inspector certifications are in Appendix B. The assessment strategy and sample methodology were developed based on the possibility that all areas within the interior and the exterior (excluding the roof) of the residential unit should be assessed. Because of limitations on destructive sampling methods due to the units being occupied and inability to repair all sample locations, additional suspect materials may be present within walls, voids, or other concealed areas. Assumptions and deviations regarding the residential unit assessment are conveyed in Section 8.0.

Tetra Tech conducted the assessment on July 20, 2020. The purpose of the assessment was to evaluate the residential unit for presence, quantity, locations, and characteristics (including friability) of asbestos-containing materials (ACM) that may require abatement prior to any renovation or demolition activities, in accordance with National Emissions Standards for Hazardous Air Pollutants (NESHAP) regulations as adopted by the EPA. The intent of asbestos NESHAP regulations is to protect the public (and workers) by minimizing release of asbestos fibers during activities involving processing, handling, and disposal of

ACM. Inhalation of asbestos fibers can cause cancer and other lung diseases (Agency for Toxic

Substances and Disease Registry [ATSDR] 2008). The assessment accorded with industry standard practice for hazardous materials assessments. Samples of suspect ACM were collected and sent for analysis by polarized light microscopy (PLM). Collection of asbestos samples accorded with NESHAP regulations as adopted by EPA.

The assessment also included an inspection to evaluate the residential unit for presence, quantity, and locations of LBP exceeding lead hazard levels. The residential unit was constructed prior to 1978, and

LBP possibly was used in the build-out of this residential unit. The LBP inspection accorded with protocols to the single-family housing inspection procedures in U.S. Department of Housing and Urban

Development (HUD) guidelines (HUD 1997). Tetra Tech screened paint-covered surfaces using an X-ray fluorescence (XRF) spectrometer. If LBP was found in the unit, lead dust wipe samples were collected in

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“all living areas where young children are most likely to come into contact with dust.” The guidelines specify that if the XRF screening detects LBP, wipe sampling should occur in a minimum of four rooms in the unit, plus collection of a sample from the floor of the entryway of the unit. If LBP was detected, Tetra

Tech collected in each area a sample from the floor and from the windowsills if present (unless no LBP had been detected at the windows—in that case, a wipe sample was collected only from the floor).

For determination of lead concentrations in soil on the exterior to each residential unit, 5-point composite surface soil samples (0-6 inches below ground surface) were collected from driplines, gardens, children’s play areas, pet sleeping areas, bare paths, and other spots where bare soil was present.

Finally, Tetra Tech performed a short-term radon test at a single location on the lowest livable level of the residential unit. The radon test bottle, not to be disturbed for a minimum of 48 hours, was placed in accordance with sampling instructions from the laboratory.

Tetra Tech prepared this report in conformance to generally accepted industrial hygiene practices and procedures. This report does not cover or comment on areas not assessed either visibly or by sample collection. The data evaluation and assessment stated herein constitute a professional opinion; no other warranty is expressed or implied. Section 6.0 conveys assumptions and deviations regarding the residential unit surveyed.

Tetra Tech provided these services consistent with the level and skill ordinarily exercised by members of the profession currently practicing under similar conditions. This statement is in lieu of other statements either expressed or implied. The scope of services performed in execution of this evaluation may not be appropriate to satisfy the needs of other users, and use or re-use of this document, the findings, conclusions, or recommendations is at the risk of said user. This assessment report does not warrant against future operations or conditions that may not be consistent with its recommendations.

Section 2.0 of this report specifies survey and analytical protocols for the asbestos survey. Section 3.0 presents asbestos findings. Section 4.0 specifies LBP inspection and lead assessment and analytical protocols. Section 5.0 presents LBP inspection and lead assessment findings. Section 6.0 specifies survey and analytical protocols for the radon assessment. Section 7.0 presents the radon finding. Section

8.0 conveys assumptions and deviations. Section 9.0 lists sources referenced during development of this report.

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2.0 ASBESTOS SURVEY AND ANALYTICAL PROTOCOLS

Tetra Tech made every effort to inspect all areas of the residential unit. Minor demolition of materials was required during the survey effort. The inspector took care to ensure that the area remained unoccupied during sample collection. Asbestos samples were collected in accordance with NESHAP, as adopted by

EPA and the AHERA protocols. AHERA defines “asbestos-containing material” as any material or product that contains more than 1 % asbestos.

Suspected ACMs were grouped as homogeneous areas if the materials were similar in appearance and texture; however, if the inspector decided that a material (for example, wall texturing) was not similar in appearance and texture to other materials at the residential unit, the inspector distinguished the material as unique and collected samples of each unique material accordingly.

Because of limitations on destructive sampling methods due to the units being occupied and inability to repair all sample locations, additional suspect materials may be present within walls, voids, or other concealed areas. In addition, certain materials were not sampled and were presumed to be ACM.

Examples of these materials may include flooring materials, wall mastics and caulking.

Bulk samples of suspected ACM were collected to ensure that each distinct layer of material was represented in the sample. A wetting agent was applied to friable surfaces prior to sample collection to reduce potential for fiber release. All samples collected were placed in plastic bags, labeled, and sealed immediately upon collection. To prevent cross-contamination between samples, the sampling instruments were wiped clean by use of a wet, lint-free cloth after collection of each sample. A unique sample identification (ID) was assigned to each sample.

The samples remained in the inspector’s custody until sent to the laboratory. Upon completion of sampling activities, the bulk samples were sent, along with Tetra Tech’s chain-of-custody documentation, to Eurofins / EMLab P&K in Houston, Texas. Suspect ACM samples were analyzed per EPA Method

600/R-93/116 via polarized light microscopy (PLM) analysis. EMLab P&K is a National Voluntary

Laboratory Accreditation Program (NVLAP)-certified laboratory. Section 3.0 of this report summarizes

ACM analytical results. Appendix C includes ACM analytical results and chain-of-custody forms for the bulk samples.

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3.0 ASBESTOS SURVEY FINDINGS

The laboratory report in Appendix C presents PLM results, summarized in Table 1 below, from samples of suspect ACM collected at the residential unit. It also itemizes materials presumed to be ACM. Bolded results in Table 1 indicate where asbestos was detected at concentration greater than 1 percent.

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TABLE 1

SUMMARY OF SUSPECT ACM LABORATORY ANALYSIS

102-B INTREPID CT

HMIS HOUSING UNIT # G170039

Sample ID Material Description Material Locations Analytical Result (% ACM1) Quantity2 Condition

G170039-DWJC-01 Drywall and Joint Compound Entire Unit ND NA NA G170039-DWJC-02 Drywall and Joint Compound Entire Unit ND NA G170039-DWJC-03 Drywall and Joint Compound Entire Unit ND NA G170039-DWJC-04 Drywall and Joint Compound Entire Unit ND NA G170039-DWJC-05 Drywall and Joint Compound Entire Unit ND NA

G170039-SC-01 Sink Undercoat Kitchen Sink ND NA

Suspect ACM Vinyl Flooring with Associated Mastic Common Areas No Sample Collected 2,600 SF Good

Suspect ACM Carpet Adhesive with Associated Mastic Bedrooms No Sample Collected 1,200 SF Good

Suspect ACM Bathtub with Associated Mastic Bathroom No Sample Collected 40 SF Good

Suspect ACM Vinyl Cover Base with Associated Mastic Basement No Sample Collected 40 LF Good

Suspect ACM Vapor Barriers Building Exterior No Sample Collected 1,000 SF Good Notes:

Bolded result indicates detection of ACM or suspect ACM.

1 AHERA defines ACM as any material or product that contains more than 1 percent asbestos.

2 This is only an estimated quantity and should not be used for bidding purposes.

’ Feet ” Inches ACM Asbestos-containing material AHERA Asbestos Hazard and Emergency Response Act of 1986

LF Linear feet NA Not applicable ND Not detected SF Square feet

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4.0 LEAD-BASED PAINT INSPECTION AND LEAD ASSESSMENT

ANALYTICAL PROTOCOLS

Tetra Tech made every effort to inspect all accessible areas of the residential unit. HUD Guidelines for the Evaluation and Control of LBP in Housing (1997) suggests that paint applied before 1978 could contain lead.

An XRF screening of suspected LBP was performed according to protocols similar to the single-family housing inspection procedures in the HUD Guidelines. Tetra Tech utilized an XRF spectrometer to perform the LBP screening.

Tetra Tech utilized the XRF “Lead Paint Mode” for testing, standardized per the equipment instruction manual, and programmed the unit with an action level of 1.0 milligram per square centimeter (mg/cm2).

Paint containing greater than or equal to 1.0 mg/cm2 lead by XRF testing or 1.0 mg/cm2 lead by laboratory analysis is considered LBP.

Tetra Tech performed XRF calibration checks according to recommended protocol and the HUD

Guidelines. These quality control readings were used to monitor performance of the XRF. The calibration-check readings were taken after every hour of operation by use of a Standard Reference Material (SRM) paint film developed by the National Institute of Standards and Technology (NIST).

If XRF readings were inconclusive, lead chip samples were collected and analyzed for total lead content.

A 2-square-inch-square template was used to accurately measure sample size. The template was placed on the painted surface where the paint was observed. While held in place manually, the template was outlined with a permanent marker. A clean piece of paper was taped to the bottom of the template to create a funnel effect. The paint inside the template area was scraped off by use of a small chisel. The paint chip samples were collected in hard plastic containers, labeled, and sealed immediately upon collection. To prevent cross-contamination between samples, the sampling instruments were wiped clean by use of a wet, lint-free cloth after collection of each sample. A unique sample identification number was assigned to each sample. The inspector took care to ensure that the subject property remained unoccupied during sample collection.

If LBP was found in the unit, lead dust wipe samples were collected in “all living areas where young children are most likely to come into contact with dust”. The guidelines specify that if screening detects

LBP, wipe sampling should occur in a minimum of four rooms, plus collection of a sample from the floor of the entryway of the unit. If LBP was detected, Tetra Tech collected in each area a sample from the floor and from the windowsill if present (unless no LBP had been detected at the windows—in that case, a wipe sample was collected only from the floor). Tetra Tech collected lead dust wipe samples following sampling protocol for clearance dust wipe sampling in Chapter 15 (titled “Clearance”) of the HUD

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Guidelines. Dust wipe samples results were compared to EPA and HUD interpretation standards of cleanup of <10 micrograms of lead per square foot (µg/ft2) for interior floors, <40 µg/ft2 of lead for porch floors, <100 µg/ft2 of lead for windowsills, and <100 µg/ft2 of lead for window troughs.

If dust and chip samples were collected, the samples remained in the inspector’s custody until sent to the laboratory. Upon completion of sampling activities, the samples were sent, along with Tetra Tech’s chain-of-custody documentation, to EMSL Analytical Inc. (EMSL) in San Leandro, California, for analysis. EMSL is a member of the Environmental Lead Lab Accreditation Program (ELLAP). Chip and dust wipe samples were analyzed for total lead via flame atomic absorption spectroscopy by application of EPA Method SW-

846 7000B/7420.

For determination of lead concentrations in soil exterior to each residential unit, 5-point composite surface soil samples (0-6 inches below ground surface) were collected from driplines, gardens, children’s play areas, pet sleeping areas, bare paths, and other spots where bare soil was present. Collection of all samples accorded with Tetra Tech’s Environmental Standard Operating Procedure (SOP) for Soil

Sampling, SOP No. 005, Revision No. 3 (Tetra Tech 2017). Soil samples were submitted to AAT, for analysis via EPA Method SW-846 6010.

Results from surface soil sampling at the site were compared to EPA standards established for residential exposure scenarios. EPA regulations define a soil-lead hazard as either of the following: (1) bare soil in a play area on residential real property or on the property of a child-occupied facility that contains total lead equal to or exceeding 400 milligrams per kilograms (mg/Kg), or (2) bare soil in a non-play area on residential real property or on the property of a child-occupied facility that contains total lead equal to or exceeding 1,200 mg/Kg; these non-play areas can be in the dripline/foundation area and/or the rest of the yard (including gardens, pet sleeping areas, bare paths, and other spots).

Section 5.0 of this report summarizes results of the LBP inspection and any chip, dust, and/or soil analytical results. Appendix D includes lead analytical results with chain-of-custody forms for any chip, dust, and/or soil samples collected.

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5.0 LBP INSPECTION AND LEAD ASSESSMENT FINDINGS

Results of the XRF screening at the residential unit are summarized in Table 2. Results of any chip samples collected at the residential unit are also summarized in Table 2. Bolded result in Tables 2 indicates detection of LBP above the action level of 1 mg/cm2.

Results from any lead dust wipe samples collected at the residential unit are summarized in Table 3.

Bolded result in Table 3 indicates detection of lead dust above the appropriate action level—

<10 micrograms of lead per square foot (µg/ft2) for interior floors, <40 µg/ft2 of lead for porch floors, <100 µg/ft2 of lead for windowsills, and <100 µg/ft2 of lead for window troughs.

Results from any soil samples collected at the residential unit are summarized in Table 4. Bolded result in

Table 4 indicates detection of lead in soils above the appropriate action level—400 mg/Kg in a play area with bare soil or 1,200 mg/Kg in bare soil in non-play areas in the dripline/foundation area and/or the rest of the yard (including gardens, pet sleeping areas, bare paths, and other spots).

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TABLE 2

SUMMARY OF XRF SCREENING LOCATIONS

XRF

Reading

No.

Paint Color Location Component Substrate XRF Reading

(mg/cm2) Damaged1

(Yes / No) Quantity2

1 White Kitchen Wall A Drywall 0.2 NA NA 2 White Kitchen Wall B Drywall 0.0 NA NA 3 White Kitchen Wall C Drywall 0.0 NA NA 4 White Kitchen Wall D Drywall 0.3 NA NA 5 White Living Room Wall A Drywall 0.1 NA NA 6 White Living Room Wall B Drywall 0.2 NA NA 7 White Living Room Wall C Drywall 0.1 NA NA 8 White Living Room Wall D Drywall 0.2 NA NA 9 White Living Room Chair Rail Wood 0.2 NA NA 10 White Living Room Base Board Wood 0.1 NA NA 11 White Living Room Heating Unit Metal 0.1 NA NA 12 White Living Room Window Trim Wood 0.2 NA NA 13 White Entry Wall A Drywall 0.2 NA NA 14 White Entry Wall B Drywall 0.1 NA NA 15 White Entry Wall C Drywall 0.3 NA NA 16 White Entry Wall D Drywall 0.2 NA NA 17 White Entry Door Trim Wood 0.2 NA NA 18 White Entry Shelf Wood 0.2 NA NA 19 White Bedroom 1 Wall A Drywall 0.2 NA NA 20 White Bedroom 1 Wall B Drywall 0.3 NA NA 21 White Bedroom 1 Wall C Drywall 0.1 NA NA 22 White Bedroom 1 Wall D Drywall 0.2 NA NA 23 White Bedroom 1 Door Trim Wood 0.1 NA NA 24 White Bedroom 1 Base Board Wood 0.3 NA NA 25 White Bedroom 2 Wall A Drywall 0.2 NA NA

TABLE 2 (Continued)

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XRF

Reading

No.

Paint Color Location Component Substrate XRF Reading

(mg/cm2) Damaged1

(Yes / No) Quantity2

26 White Bedroom 2 Wall B Drywall 0.1 NA NA 27 White Bedroom 2 Wall C Drywall 0.3 NA NA 28 White Bedroom 2 Wall D Drywall 0.2 NA NA 29 White Bedroom 2 Closet Trim Wood 0.2 NA NA 30 White Bedroom 2 Door Wood 0.2 NA NA 31 White Bedroom 2 Base Board Wood 0.3 NA NA 32 White Bathroom Wall A Drywall 0.2 NA NA 33 White Bathroom Wall B Drywall 0.2 NA NA 34 White Bathroom Wall C Drywall 0.2 NA NA 35 White Bathroom Wall D Drywall 0.2 NA NA 36 White Bathroom Ceiling Drywall 0.2 NA NA 37 White Bathroom Closet Shelf Wood 0.2 NA NA 38 White Basement Storage Wall A Drywall 0.1 NA NA 39 White Basement Storage Wall B Concrete 0.2 NA NA 40 White Basement Storage Wall C Concrete 0.2 NA NA 41 White Basement Storage Wall D Concrete 0.2 NA NA 42 White Basement Storage Crawl Space Door Wood 3.6 No 4 SF 43 White Laundry Room Wall A Drywall 0.0 NA NA 44 White Laundry Room Wall B Concrete 0.5 NA NA 45 White Laundry Room Wall C Drywall 0.2 NA NA 46 White Laundry Room Wall D Drywall 0.1 NA NA 47 Grey Laundry Room Floor Concrete 0.3 NA NA 48 Tan Exterior Side A Siding Vinyl 0.1 NA NA 49 White Exterior Side A Door Trim Vinyl 0.3 NA NA 50 Grey Exterior Side A Door Metal 0.1 NA NA 51 White Exterior Side A Beam Wood 15.9 Yes 30 LF 52 Tan Exterior Side D Siding Vinyl 0.4 NA NA 53 White Exterior Side D Door Trim Vinyl 0.1 NA NA 54 Tan Exterior Side D Beam Wood 17.9 Yes 12 LF 55 Tan Exterior Side C Siding Vinyl 0.0 NA NA

TABLE 2 (Continued)

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XRF

Reading

No.

Paint Color Location Component Substrate XRF Reading

(mg/cm2) Damaged1

(Yes / No) Quantity2

56 Tan Exterior Side C Window Trim Vinyl 0.1 NA NA 57 White Exterior Side C Gutter Metal 0.0 NA NA 58 Calibration Standard 1.1,1.0,1.1 NA NA 59 Calibration Blank 0.1,0.2,0.2 NA NA

Notes:

Bolded result indicates detection of LBP.

1 This column identifies LBP surfaces that are damaged.

2 This is only an estimated quantity and should not be used for bidding purposes.

mg/cm2 Milligrams per square centimeter LBP Lead-based paint LF Linear feet

NA Not applicable SF Square feet XRF X-ray fluorescence

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TABLE 3

SUMMARY OF LEAD DUST WIPE SAMPLES ANALYZED

Sample ID Location Component Substrate Analytical Results (µg/ft2)

G170039-DW-01 Kitchen Entry Floor Wood <10 G170039-DW-02 Living Room Floor Wood <10 G170039-DW-03 Laundry Room Floor Concrete <10 G170039-DW-04 Storage Room Floor Concrete 10

G170039-DW-05 Duplicate of G170039-DW-04 Floor Concrete 17

G170039-DW-06 Blank NA NA <10

Notes:

Bolded result indicates detection of lead dust above the action level.

1 Blank samples are quality control samples only.

µg/ft2 Micrograms per square foot

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TABLE 4

SUMMARY OF SOIL SAMPLES ANALYZED

Sample ID Location Analytical Results (mg/Kg)

G170039-01 Dripline <40

Notes:

Bolded result indicates detection of lead in soils above the action level.

1 Blank samples are quality control samples only.

mg/Kg Milligrams per kilogram

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6.0 RADON ASSESSMENT ANALYTICAL PROTOCOLS

Tetra Tech performed a short-term radon test at a single location on the lowest livable level of the residential unit. A radon test bottle was placed in an area not to be disturbed for a minimum of 48 hours, in accordance with sampling instructions from Mid-America Radon Testing Inc. (Mid-America), of

Overland Park, Kansas. The samples remained in the inspector’s custody until sent to the laboratory.

Upon completion of sampling activities, the radon samples were sent, along with Tetra Tech’s chain-of-custody documentation, to Mid-America; then the radon sample was analyzed, and radon concentration was reported in units of picocuries per liter (pCi/L). EPA’s recommended action guideline is radon concentration greater than or equal to 4 pCi/L. Mid-America is certified by the National Environmental

Health Association, National Radon Proficiency Program (ID # 101148 ALI). Section 7.0 of this report conveys the analytical result for radon. Appendix E includes the radon analytical result and the chain-of-custody form for the radon sample collected.

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7.0 RADON ASSESSMENT FINDINGS

Results of the radon testing are summarized in Table 5. Bolded result in Table 5 indicates detection of radon equal to or above the action level of 4 pCi/L.

TABLE 5

SUMMARY OF RADON SAMPLE ANALYZED

Sample ID Location Analytical Results (pCi/L)

200606-66 First Floor Living Area 0.2

Notes:

Bolded result indicates detection of radon above the action level.

pCi/L Picocuries per liter

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8.0 ASSUMPTIONS AND DEVIATIONS

The environmental assessment occurred at the residential unit at USCG Base Kodiak in all interior and exterior areas specified in the scope of work. However, because of limitations on destructive sampling methods, additional suspect materials may be present but not detected in walls, voids, or other concealed areas.

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9.0 REFERENCES

Agency for Toxic Substance and Disease Registry (ATSDR). 2008. Asbestos: Health Effects. Accessed July 29, 2019. http://www.atsdr.cdc.gov/asbestos/asbestos/health_effects/

Tetra Tech, Inc. (Tetra Tech). 2017. Environmental Standard Operating Procedure (SOP), Soil Sampling, SOP NO. 005 Revision No. 03. February

U.S. Department of Housing and Urban Development (HUD). 1997. Guidelines for the Evaluation and Control of Lead-Based Paint Hazards in Housing.

http://www.atsdr.cdc.gov/asbestos/asbestos/health_effects/

APPENDIX A: PHOTOLOG

UNITED STATES COAST GUARD - ADDRESS: 102-B INTREPID CT

A-1 United States Coast Guard

Photo 1: This photograph shows the crawl space door that exceeded the XRF threshold of 1.0 mg/cm2.

Photo 2: This photograph shows drywall with associated mastic and cover base with associated mastic in the laundry room.

A-2 United States Coast Guard

Photo 3: This photograph shows carpet with associated mastic and drywall with associated mastic in a bedroom.

Photo 4: This photograph shows the exterior beam that was sampled.

A-3 United States Coast Guard

Photo 5: This photograph shows vinyl flooring with associated mastic in a bathroom.

Photo 6: This photograph shows vinyl flooring with associated mastic in a kitchen.

APPENDIX B: INSPECTOR CERTIFICATIONS

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APPENDIX C: ASBESTOS ANALYTICAL RESULTS AND CHAIN-OF-

CUSTODY FORMS

Approved by:

Approved Signatory Gregorio Delgado

Report for:

Mr. Jeffrey Mitchell Tetra Tech-KCMO 415 Oak Street Kansas City, MO 64106

Regarding: Project: Kodiak- G170039; Asbestos Survey 102 B Intrepid Court G170039

EML ID: 2446666

All samples were received in acceptable condition unless noted in the Report Comments portion in the body of the report. The results relate only to the samples as received. The results include an inherent uncertainty of measurement associated with estimating percentages by polarized light microscopy. Measurement uncertainty data for sample results with >1% asbestos concentration can be provided when requested.

Eurofins EMLab P&K ("the Company") shall have no liability to the client or the client's customer with respect to decisions or recommendations made, actions taken or courses of conduct implemented by either the client or the client's customer as a result of or based upon the Test Results. In no event shall the Company be liable to the client with respect to the Test Results except for the Company's own willful misconduct or gross negligence nor shall the Company be liable for incidental or consequential damages or lost profits or revenues to the fullest extent such liability may be disclaimed by law, even if the Company has been advised of the possibility of such damages, lost profits or lost revenues. In no event shall the Company's liability with respect to the Test Results exceed the amount paid to the Company by the client therefor.

Dates of Analysis:

Asbestos PLM: 07-24-2020

Service SOPs: Asbestos PLM (EPA 40CFR App E to Sub E of Part 763 & EPA METHOD 600/R-93-116, SOP EM-AS-S-1267) NVLAP Lab Code 600122-0

EMLab ID: 2446666, Page 1 of 3EMLab P&K, LLC

Eurofins EMLab P&K 10900 Brittmoore Park Drive, Suite G, Houston, TX 77041

(800) 651-4802 Fax (623) 780-7695 www.emlab.comClient: Tetra Tech-KCMO C/O: Mr. Jeffrey Mitchell Re: Kodiak- G170039; Asbestos Survey 102 B Intrepid Court G170039

Date of Receipt: 07-23-2020 Date of Report: 07-27-2020

ASBESTOS PLM REPORT

Total Samples Submitted: 6 Total Samples Analyzed: 6

Total Samples with Layer Asbestos Content > 1%: 0

Location: G170039-DWJC-01 Lab ID-Version‡: 11665238-1

Sample Layers Asbestos Content Pink Drywall with Brown Paper ND

White Joint Compound ND Cream Tape ND

White Texture with White Paint ND Composite Non-Asbestos Content: 20% Cellulose Sample Composite Homogeneity: Poor

Location: G170039-DWJC-02 Lab ID-Version‡: 11665239-1

Sample Layers Asbestos Content Pink Drywall with Brown Paper ND

White Joint Compound ND Cream Tape ND

White Texture with White Paint ND Composite Non-Asbestos Content: 20% Cellulose Sample Composite Homogeneity: Poor

Location: G170039-DWJC-03 Lab ID-Version‡: 11665240-1

Sample Layers Asbestos Content Pink Drywall with Brown Paper ND

White Joint Compound ND Cream Tape ND

White Texture with White Paint ND Composite Non-Asbestos Content: 20% Cellulose Sample Composite Homogeneity: Poor

EMLab ID: 2446666, Page 2 of 3EMLab P&K, LLC

The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by any agency of the federal government. Eurofins EMLab P&K reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified.

Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification.

‡ A "Version" indicated by -"x" after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of "x".

Eurofins EMLab P&K 10900 Brittmoore Park Drive, Suite G, Houston, TX 77041

(800) 651-4802 Fax (623) 780-7695 www.emlab.comClient: Tetra Tech-KCMO C/O: Mr. Jeffrey Mitchell Re: Kodiak- G170039; Asbestos Survey 102 B Intrepid Court G170039

Date of Receipt: 07-23-2020 Date of Report: 07-27-2020

ASBESTOS PLM REPORT

Location: G170039-DWJC-04 Lab ID-Version‡: 11665241-1

Sample Layers Asbestos Content Pink Drywall with Brown Paper ND

White Joint Compound with White Paint ND Composite Non-Asbestos Content: 20% Cellulose Sample Composite Homogeneity: Poor

Location: G170039-DWJC-05 Lab ID-Version‡: 11665242-1

Sample Layers Asbestos Content Pink Drywall with Brown Paper ND

White Joint Compound ND Cream Tape ND

White Texture with White Paint ND Composite Non-Asbestos Content: 20% Cellulose Sample Composite Homogeneity: Poor

Location: G170039-SC-01 Lab ID-Version‡: 11665243-1

Sample Layers Asbestos Content Gray Sink Undercoating ND

Composite Non-Asbestos Content: 10% Cellulose Sample Composite Homogeneity: Good

EMLab ID: 2446666, Page 3 of 3EMLab P&K, LLC

The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by any agency of the federal government. Eurofins EMLab P&K reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified.

Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification.

‡ A "Version" indicated by -"x" after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of "x".

103IG7013

APPENDIX D: LEAD ANALYTICAL RESULTS AND CHAIN-OF-

Client Sample Description ConcentrationLab ID Analyzed Area Sampled Lead

Collected

EMSL Analytical, Inc 464 McCormick Street, San Leandro, CA 94577 Phone/Fax: (510) 895-3675 / (510) 895-3680 http://www.EMSL.com sanleandrolab@emsl.com

Attn: Jeffrey Mitchell Tetra Tech 415 Oak Street Kansas City, MO 64106

Received: 7/23/2020 09:15 AM

103IG7013.00002-EMI

Fax: (816) 410-1748 Phone: (816) 412-1741

Project:

7/16/2020Collected:

Test Report: Lead in Dust by Flame AAS (SW 846 3050B/7000B)*

092012839 CustomerID: TETRA77 CustomerPO: 103IG7013.00002 ProjectID:

EMSL Order:

Site: ENTRY 092012839-0001G170039-DW-01 1 <10 µg/ft²ft²7/24/20207/15/2020

Site: LIVING RM 092012839-0002G170039-DW-02 1 <10 µg/ft²ft²7/24/20207/15/2020

Site: LAUNDRY RM 092012839-0003G170039-DW-03 1 <10 µg/ft²ft²7/24/20207/16/2020

Site: STORAGE RM 092012839-0004G170039-DW-04 1 10 µg/ft²ft²7/24/20207/16/2020

Site: DUP AT 04 092012839-0005G170039-DW-05 1 17 µg/ft²ft²7/24/20207/16/2020

Site: BLANK 092012839-0006G170039-DW-06 N/A <10 µg/wipe 7/24/20207/16/2020

Julian Neagu, Lead Laboratory Manager or other approved signatory

Test Report ChmSnglePrm/nQC-7.32.3 Printed: 7/24/2020 4:54:39 PM

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. Analysis following Lead in Dust by EMSL SOP/Determination of Environmental Lead by FLAA. Reporting limit is 10 ug/wipe. Ug/wipe = ug/ft2 x area sampled in ft2.

Unless noted, results in this report are not blank corrected. The lab is not responsible for data reported in ug/ft2 which is dependent upon the area provided by non-lab pesonnel. "<" (less than) result signifies that the analyte was not detected at or above the reporting limit. Measurement of uncertainty is available upon request. Definitions of modifications are available upon request.

Samples analyzed by EMSL Analytical, Inc San Leandro, CA A2LA Accredited Environmental Testing Cert #2845.09

Initial report from 07/24/2020 16:54:39 http://www.EMSL.com mailto:sanleandrolab@emsl.com

OrderID: 092012839

OrderID: 092012839

Client Sample Description ConcentrationLab ID Analyzed Weight Lead

Collected

EMSL Analytical, Inc 464 McCormick Street, San Leandro, CA 94577 Phone/Fax: (510) 895-3675 / (510) 895-3680 http://www.EMSL.com sanleandrolab@emsl.com

Attn: Jeffrey Mitchell Tetra Tech 415 Oak Street Kansas City, MO 64106

Received: 7/23/2020 09:15 AM

103IG7013.00002-EMI

Fax: (816) 410-1748 Phone: (816) 412-1741

Project:

7/20/2020Collected:

Test Report: Lead in Soils by Flame AAS (SW 846 3050B/7000B)*

092012766 CustomerID: TETRA77 CustomerPO: 103IG7013.00002 ProjectID:

EMSL Order:

0.5233 Site: DRIPLINE

092012766-0001G170039-01 <40 mg/Kg7/23/2020 g7/20/2020

Julian Neagu, Lead Laboratory Manager or other approved signatory

Test Report ChmSnglePrm/nQC-7.32.3 Printed: 7/24/2020 4:05:21 PM

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. Analysis following Lead in Soil/Solids by EMSL SOP/Determination of Environmental Lead by FLAA. Reporting limit is 40 mg/kg based on the minimum sample weight per our SOP. Unless noted, results in this report are not blank corrected. "<" (less than) result signifies that the analyte was not detected at or above the reporting limit. Measurement of uncertainty is available upon request. Definitions of modifications are available upon request.

Samples analyzed by EMSL Analytical, Inc San Leandro, CA Method SW 846 7000B replaces EPA 7420 for lead analysis and is an equivalent method. CA ELAP 1628, A2LA Acc. #2485.09.

Initial report from 07/24/2020 16:05:21 http://www.EMSL.com mailto:sanleandrolab@emsl.com

OrderID: 092012766

103IG7013

APPENDIX E: RADON ANALYTICAL RESULTS AND CHAIN-OF-