Atch 21 - 02 82 11.1 Hazmat Survey Report 06-12-25.pdf

HAZARDOUS MATERIALS

SURVEY REPORT

VA Medical Center Exterior Covered Walkways

77 Wainwright Drive Walla Walla, WA 99362

Prepared for:

Vali Cooper International, LLC 18300 East 71st Ave, Suite 130

Denver, CO 80249

Inspection Dates: May 28, 2025 Report Prepared: June 12, 2025

Prepared By:

4000 SE International Way, Suite F101 Milwaukie, OR 97222

503.387.3251

TRC Project Number: 674884

TABLE OF CONTENTS

EXECUTIVE SUMMARY

BACKGROUND

Asbestos Containing Materials

OSHA Regulated Materials

Asbestos Sampling and Analytical Procedures

Lead-based and Lead-containing Paints

ASBESTOS FINDINGS & RECOMMENDATIONS

Asbestos Containing Materials (>1.0%)

Non-Asbestos Containing Materials (ND)

LEAD PAINT FINDINGS & RECOMMENDATIONS

SOIL SAMPLING FINDINGS & RECOMMENDATIONS

PCB FINDINGS & RECOMMENDATIONS

MERCURY FINDINGS & RECOMMENDATIONS

RECOMMENDATIONS

DISCLAIMER

Appendices

Appendix A – Photo Pages Appendix B – Sample Locations Appendix C – Laboratory Analytical Data Sheets Appendix D – Inspector Certification(s)

Hazardous Materials Survey Report June 12, 2025 VA Medical Center – Exterior Covered Walkways – Walla Walla, WA TRC Job #674884

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EXECUTIVE SUMMARY

TRC Environmental Corporation (TRC) was contracted by Vali Cooper International, LLC (VCI) to conduct a hazardous materials survey, including collection of bulk samples, laboratory analysis, and preparation of a report for the Exterior Covered Walkways at the VA Medical Center, located at 77 Wainwright Drive in Walla Walla, Washington 99362. Mr. Jason Stone, AHERA accredited building inspector, performed the survey on May 28, 2025. The survey activities included the inspection and assessment of accessible suspect building materials, collection of bulk samples of suspect asbestos containing building materials, and submission of bulk samples for laboratory analysis. In addition to the bulk sampling of suspect asbestos containing building materials, a lead paint survey was performed to determine the presence of lead by taking paint chip samples, along with sampling of soil to determine the presence of lead in the soil. A visual assessment for other suspect hazardous materials was also conducted during this survey.

ASBESTOS MATERIAL SUMMARY

Suspect asbestos containing building materials were sampled and submitted under the chain-of-custody (COC) protocol to an accredited laboratory for polarized light microscopy (PLM) bulk sample analysis. Inspection, sampling and analytical procedures were performed in general accordance with the U.S. Environmental Protection Agency’s (EPA’s) National Emission Standards for Hazardous Air Pollutants (NESHAP) EPA 40 CFR 61 Subpart M, the EPA Asbestos Hazard Emergency Response Act (AHERA) 40 CFR Part 763, and Federal Occupational Safety and Health Administration (OSHA) 29 CFR 1926.1101 guidelines.

The following materials sampled during this investigation were identified as asbestos containing materials:

Sample No. Material Location Asbestos Content

Approximate Quantity

C-2A C-2B C-2C

Cement Board Covered Corridor 30%

Chrysotile

180 SF

C-7A C-7B C-7C

Soil Beneath T2 Walkway Present 120 SF

ND = Non-detect SF = Square feet LF = Linear Feet N/A = Not Applicable

Additionally, any materials uncovered during demolition activities that are not addressed in this inspection report or prior reports for the building are considered assumed asbestos containing materials and must be sampled by an accredited asbestos inspector prior to disturbance, or they must be treated as asbestos containing.

LEAD PAINT/GLAZING MATERIAL SUMMARY

Lead-based paint (LBP) is defined by the United States Department of House and Urban Development (HUD) as any paint, varnish, stain, or other applied coating that has one mg/cm2 or more of lead or 0.5% by weight (5,000 micrograms per gram [µg/g] or 5,000 parts of lead per million [ppm]). The United States' Consumer Product Safety Commission (CPSC) banned lead paint in 1977 in residential properties and public buildings (16 Code of Federal Regulations 1303).

TRC collected paint chip samples of suspect paints during this survey. Lead laboratory services were provided by eurofins, a National Lead Laboratory Accreditation Program (NLLAP) certified laboratory. Paint chip samples were analyzed by EPA SW-836 Method 7420.

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The EPA level to define Lead Based Paint within a bulk paint chip sample is any sample greater than 0.5% by weight. Additionally, any paint containing less than 0.5% by weight, but greater than the laboratory detection limit by bulk paint chip laboratory analysis is considered to be a lead-containing paint.

Exterior Yellow Paint – 40% Exterior Yellow Paint – 34% Exterior Yellow Paint – 37% Exterior Gray Paint – 0.28% Exterior Yellow Paint – 0.037% Exterior Yellow Paint – 20% Exterior Yellow Paint – 27% Exterior Gray Paint – 0.012% Exterior White Paint – 0.0074% Interior Yellow Paint – 0.0075% Interior Yellow Paint – 0.12% Interior Yellow Paint – 11% Exterior Yellow Paint – 13% Exterior Yellow Paint – 14% Exterior Yellow Paint – 14% Interior Yellow Paint – 19% Interior Yellow Paint – 0.0076% Interior Yellow Paint – 0.010% Exterior Yellow Paint – 41%

Based on applicable federal and state regulations, all identified and/or assumed lead-paints/glazing must be handled and disposed of by trained personnel. In general, demolition contractors are trained to remove, handle and dispose of lead paints/glazing.

LEAD SOIL SAMPLING SUMMARY

Soil samples were collected from each bare soil area that was greater than 9 square feet, in accordance with HUD Guidelines, Chapter 5. Within each of the sample location, a number of small soil samples were collected to create composite soil sample for each sample location.

Samples are collected at varying locations on the property to identify potential sources of lead-affected soils that are accessible by children. Composite soil samples are collected where there is bare soil along building drip lines; children’s play areas, and other bare soil areas. Drip lines are bare soil areas adjacent to buildings where precipitation (rain, snow, etc.) has come in contact with the roof or exterior surface and dripped into the bare/exposed soil.

Per 40 CFR 745.65(c), a soil-lead hazard from lead-based paint is present when a play area sample of bare soil is equal to or greater than 250 parts per million (ppm); or in the rest of the yard (i.e., non-play areas) when the bare soil sample is equal to or greater than 1,200 ppm.

The following table presents the soil sampled during this survey:

Sample Number Paint Description Result (ppm)

C-L-12 Soil 3,300

C-L-22 Soil 270

C-L-23 Soil 4,800

Based on applicable federal and state regulations, all identified and/or assumed lead-containing materials must be handled and disposed of by trained personnel. In general, demolition

- 3 -contractors are trained to remove, handle, and dispose of lead which will not typically generate a large amount of additional cost above and beyond the general demolition activities.

POLYCHLORINATED BIPHENYL (PCB) MATERIAL SUMMARY

Polychlorinated Biphenyls (PCBs) are commonly found in fluorescent light ballasts as well as caulking and glazing’s in construction. No sampling was conducted for PCBs during this investigation; however, these materials should be assumed to contain PCBs and treated as such during the demolition activities. All light ballasts observed by TRC during this survey were newer and had a “no-PCB” label and thus would not need to be disposed of as PCB containing waste.

However, any light ballasts that do not have the “no-PCB” label that are encountered during the demolition activities should be assumed to contain PCBs.

Based on applicable federal and state regulations, all PCB-containing or assumed PCB-containing caulking, light ballast and other materials must be handled and disposed of by trained personnel. In general, demolition contractors are trained to remove and handle PCB-containing materials which will not typically generate a large amount of additional cost above and beyond the general demolition activities. However, disposal/recycling is typically completed by an outside contractor.

MERCURY CONTAINING MATERIAL SUMMARY

Mercury is commonly found in fluorescent light tubes as well as in older wall mounted thermostats.

No sampling was conducted for mercury during this investigation; however, these materials should be assumed to contain mercury and treated as such during the demolition/renovation activities.

The following materials observed during this survey are assumed to contain mercury:

Fluorescent Light Tubes – Throughout

Based on applicable federal and state regulations, all mercury-containing or assumed mercury-containing fluorescent light tubes must be handled and disposed of by trained personnel. In general, demolition contractors are trained to remove and handle mercury-containing materials which will not typically generate a large amount of additional cost above and beyond the general demolition activities. However, disposal/recycling is typically completed by an outside contractor.

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INTRODUCTION

A hazardous materials survey was conducted by TRC of the Exterior Covered Walkways at the VA Medical Center, located at 77 Wainwright Drive in Walla Walla, Washington. It was reported by the client that this hazardous materials survey is being conducted in conjunction with their planned demolition project. The survey activities were performed on May 28, 2025, and included the inspection, assessment and bulk sampling of suspect asbestos containing building materials and suspect lead paints that had not previously been sampled as well as a visual inspection for other hazardous materials.

Mr. Jason Stone, AHERA accredited building inspector, conducted the survey and sampling activities. Copies of training certificates and state licenses (where applicable) are presented in Appendix D, Inspector Certifications.

BACKGROUND

Asbestos Containing Materials

The United States Environmental Protection Agency (EPA) define an asbestos-containing material (ACM) as any material containing more than one percent (>1.0%) asbestos by weight.

In addition, ACMs are designated as:

Friable asbestos - material which can be crumbled, pulverized or reduced to powder by hand pressure, a.k.a. Regulated Asbestos Containing Materials (RACM).

Category I Non-friable - includes resilient floor coverings, asphalt roofing products, gaskets and packing.

Category II Non-friable - any non-friable ACM that is not in Category I (i.e. Asbestos-cement (Transite) siding or roofing material).

OSHA Regulated Materials

The Occupational Safety and Health Administration (OSHA) regulates all materials containing any detectable level of asbestos by weight, including those materials containing 1.0% or less.

Asbestos Sampling and Analytical Procedures

Representative bulk samples of suspect asbestos-containing building materials were randomly collected from the interior of the building. Homogenous material determination was based on the following criteria:

Similar physical characteristics (same color and texture, etc.), Application (sprayed or trowel-on, assembly into a system, etc.), Material function (thermal insulation, floor tile, wallboard system, etc.).

The bulk samples were collected, labeled, and shipped to the certified analytical laboratory under proper COC documentation, and condition and approximate quantity assessments were performed by the accredited inspector during the inspection.

Laboratory services were provided by the TRC Laboratory, in Windsor, Connecticut, a National Voluntary Laboratory Accreditation Program (NVLAP) certified laboratory (NVLAP code #101424- 0).

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Bulk samples were analyzed by PLM utilizing the EPA’s Test Methods: Methods for the Determination of Asbestos in Bulk Building Materials (EPA 600/R-93/116, July 1993) and the McCrone Research Institute’s The Asbestos Particle Atlas as method references.

Analysis by PLM was performed by visual observation of the bulk sample and slides prepared of the bulk sample for microscopic examination and identification. The samples were analyzed for asbestos (Chrysotile, Amosite, Crocidolite, Anthophyllite, and Actinolite/Tremolite), fibrous non-asbestos constituents (mineral wool, cellulose, etc.) and non-fibrous constituents. Using a stereoscope, the microscopist visually estimates the relative amounts of each constituent by determining the estimated area of the asbestos compared with the area estimate of the total sample.

Lead-based and Lead-containing Paints

Lead-based paint (LBP) is defined by the United States Department of House and Urban Development (HUD) as any paint, varnish, stain, or other applied coating that has one (1) mg/cm2 or more of lead or 0.5% by weight (5,000 micrograms per gram [µg/g] or 5,000 parts of lead per million [ppm]).

According to the Occupational Safety and Health Division’s (OSHA) Program Directive, Lead:

Exposure in Construction, “For all occupational exposure to lead occurring in the course of construction work, the standard (1926.62) does not specify a minimum amount or concentration of lead that triggers a determination that lead is present and the potential for occupational exposure exists. Therefore, any paint containing less than one (1) mg/cm2, but greater than the XRF detection limit and/or any paint containing less than 0.5% by weight, but greater than the laboratory detection limit by bulk paint chip laboratory analysis is considered to be a lead-containing paint.

TRC collected paint chip samples of peeling and damaged suspect paints only during this survey.

Lead laboratory services were provided by eurofins, a National Lead Laboratory Accreditation Program (NLLAP) certified laboratory. Paint chip samples were analyzed by EPA SW-836 Method 7420.

Soil Sampling

Soil samples were collected from each bare soil area that was greater than 9 square feet, in accordance with HUD Guidelines, Chapter 5. Within each of the sample location, a number of small soil samples were collected to create composite soil sample for each sample location.

Samples are collected at varying locations on the property to identify potential sources of lead-affected soils that are accessible by children. Composite soil samples are collected where there is bare soil along building drip lines; children’s play areas, and other bare soil areas. Drip lines are bare soil areas adjacent to buildings where precipitation (rain, snow, etc.) has come in contact with the roof or exterior surface and dripped into the bare/exposed soil.

Per 40 CFR 745.65(c), a soil-lead hazard from lead-based paint is present when a play area sample of bare soil is equal to or greater than 250 parts per million (ppm); or in the rest of the yard (i.e., non-play areas) when the bare soil sample is equal to or greater than 1,200 ppm.

Soil samples were analyzed for lead using Flame Atomic Absorption Spectroscopy techniques by eurofins, in Mt. Laurel, NJ. Soil samples were analyzed utilizing Method S204 based upon EPA SW-846 Method 6010C/7420.

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ASBESTOS FINDINGS & RECOMMENDATIONS

The following table presents the location and quantities of each suspect building material identified and sampled during this survey as well as all applicable analytical results:

Content

Approximate Quantity

C-1A thru C-1I

Asphaltic Roof System & Associated Underlayment

Corridor Roof ND 20,000 SF

C-2A C-2B C-2C

Cement Board Covered Corridor 30%

Chrysotile

180 SF

C-3A C-3B C-3C

Brick Grout Corridor Wall ND 990 SF

C-4A C-4B C-4C

Sheet Vinyl Flooring & Associated Glue

Room 75 Entry ND 14 SF

C-5A C-5B C-5C

Brown Cove Base & Associated Glue

Room 75 Entry ND 2 LF

C-6A C-6B C-6C

Support Beam Room 75 Entry ND 14 SF

C-7A C-7B C-7C

Soil Beneath T2 Walkway Present 120 SF

C-8A C-8B C-8C

Adhesive Room 69 ND 3 SF

Asbestos Containing Materials (>1.0%)

The following materials sampled during this investigation were identified as asbestos containing materials:

Content

Approximate Quantity

C-2A C-2B C-2C

Cement Board Covered Corridor 30%

Chrysotile

180 SF

C-7A C-7B C-7C

Soil Beneath T2 Walkway Present 120 SF

Non-Asbestos Containing Materials (ND)

The following materials sampled during this investigation and prior investigations do not contain asbestos:

Material Location

Asphaltic Roof System & Associated Underlayment Corridor Roof

Brick Grout Corridor Wall

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Material Location

Sheet Vinyl Flooring & Associated Glue Room 75 Entry

Brown Cove Base & Associated Glue Room 75 Entry

Support Beam Room 75 Entry

Adhesive Room 69

Hidden building materials (e.g., old floor mastic patches hidden under carpeting, pipe insulation within wall cavities, etc.), other than those discussed in this report, could be uncovered when removing building finishes during demolition activities. Any materials encountered during the demolition activities that are not identified in this report, should either be presumed to be asbestos containing and handled as ACM or be sampled by an accredited asbestos inspector to determine if it contains asbestos.

LEAD PAINT FINDINGS & RECOMMENDATIONS

The following table presents the suspect bulk paint chips sampled during this survey:

Sample Number Paint Description Lead Concentration

% by weight

HUD/OSHA

Category

C-L-1 Exterior Yellow Paint 40% LBP

C-L-2 Exterior Yellow Paint 34% LBP

C-L-3 Exterior Yellow Paint 37% LBP

C-L-4 Exterior Gray Paint 0.28% LCP

C-L-5 Exterior Gray Paint <0.0058% BRL

C-L-6 Exterior Gray Paint <0.0057% BRL

C-L-7 Exterior Yellow Paint 0.037% LCP

C-L-8 Exterior Yellow Paint 20% LBP

C-L-9 Exterior Yellow Paint 27% LBP

C-L-10 Exterior Gray Paint 0.012% LCP

C-L-11 Exterior White Paint 0.0074% LCP

C-L-13 Interior Yellow Paint 0.0075% LCP

C-L-14 Interior Yellow Paint 0.12% LCP

C-L-15 Interior Yellow Paint 11% LBP

C-L-16 Exterior Yellow Paint 13% LBP

C-L-17 Exterior Yellow Paint 14% LBP

C-L-18 Exterior Yellow Paint 14% LBP

C-L-19 Interior Yellow Paint 19% LBP

C-L-20 Interior Yellow Paint 0.0076% LCP

C-L-21 Interior Yellow Paint 0.010% LCP

C-L-25 Exterior Yellow Paint 41% LBP HUD/OSHA Categories: LBP = Lead Based Paint LCP = Lead Containing Paint BRL = Below Reporting Limit

The EPA level to define Lead Based Paint within a bulk paint chip sample is any sample greater than 0.5% by weight. Additionally, any paint containing less than 0.5% by weight, but greater than the laboratory detection limit by bulk paint chip laboratory analysis is considered to be a lead-containing paint. Nineteen (19) of the twenty-one (21) paint chip samples collected during this survey contained detectable levels of lead, with eleven (11) identified as Lead Based Paint.

Based on applicable federal and state regulations, all identified and/or assumed lead-paints must be handled and disposed of by trained personnel. In general, demolition contractors are trained to remove, handle, and dispose of lead paints/glazing which will not typically generate a large amount of additional cost above and beyond the general demolition activities.

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SOIL SAMPLING FINDINGS & RECOMMENDATIONS

The following table presents the soil sampled during this survey:

Sample Number Paint Description Result (ppm)

C-L-12 Soil 3,300

C-L-22 Soil 270

C-L-23 Soil 4,800

All three (3) of the lead soil samples that were collected during this survey contained detectable levels of lead, with all exceeding the acceptable limits for child play areas, and two (2) exceeding the acceptable limits for residential yards.

Based on applicable federal and state regulations, all identified and/or assumed lead-containing materials must be handled and disposed of by trained personnel. In general, demolition contractors are trained to remove, handle, and dispose of lead which will not typically generate a large amount of additional cost above and beyond the general demolition activities.

PCB FINDINGS & RECOMMENDATIONS

Polychlorinated Biphenyls (PCBs) are commonly found in fluorescent light ballasts as well as caulking and glazing in construction. No sampling was conducted for PCBs during this investigation; however, these materials should be assumed to contain PCBs and treated as such during the demolition activities. All light ballasts observed by TRC during this survey were newer and had a “no-PCB” label and thus would not need to be disposed of as PCB containing waste.

However, any caulking or light ballasts that do not have the “no-PCB” label encountered during the demolition activities should be assumed to contain PCBs.

Based on applicable federal and state regulations, all PCB-containing or assumed PCB-containing light ballast and other materials must be handled and disposed of by trained personnel.

In general, demolition contractors are trained to remove and handle PCB-containing materials which will not typically generate a large amount of additional cost above and beyond the general demolition activities. However, disposal/recycling is typically completed by an outside contractor.

MERCURY FINDINGS & RECOMMENDATIONS

Mercury is commonly found in fluorescent light tubes as well as in older wall mounted thermostats.

No sampling was conducted for mercury during this investigation; however, these materials should be assumed to contain mercury and treated as such during the demolition activities.

The following materials observed during this survey are assumed to contain mercury:

Fluorescent Light Tubes – Throughout

Based on applicable federal and state regulations, all mercury-containing or assumed mercury-containing fluorescent light tubes and thermostats must be handled and disposed of by trained personnel. In general, demolition contractors are trained to remove and handle mercury-containing materials which will not typically generate a large amount of additional cost above and beyond the general demolition activities. However, disposal/recycling is typically completed by an outside contractor.

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RECOMMENDATIONS

All identified or assumed asbestos containing materials from this investigation must be removed by a licensed asbestos abatement contractor prior to any renovation or demolition activities that may impact such materials.

Additionally, any materials uncovered during demolition activities that are not addressed in this inspection report for the building are assumed to be asbestos containing materials and must be sampled by an accredited asbestos inspector prior to disturbance, or they must be treated as asbestos containing.

All additional hazardous materials (i.e. lead paints, suspect PCB and mercury containing materials and other hazardous materials) that are identified or assumed to be present based on this assessment must be removed, handled and disposed of in accordance with all applicable federal, state and local regulations prior to being disturbed during demolition activities.

DISCLAIMER

The content presented in this report is based on data collected during the site inspection and survey, review of pertinent regulations, requirements, guidelines and commonly followed industry standards, and information provided by VCI, their clients, agents, and representatives.

The work has been conducted in an objective and unbiased manner and in accordance with generally accepted professional practice for this type of work. TRC believes the data and analysis to be accurate and relevant; but cannot accept responsibility for the accuracy or completeness of available documentation or possible withholding of information by other parties.

This hazardous materials survey report is designed to aid the property owner, architect, construction manager, general contractor, and asbestos abatement contractor in locating potential ACMs, lead paints and other hazardous materials. This report is not intended for, and may not be utilized as, a bidding document or as an abatement project specification document.

Quantifications of asbestos containing materials are estimations and are not exact measurements.

If you have any questions, or need any further clarification regarding this report, please do not hesitate to contact Mr. Ron Landolt at (503) 407-0734.

Sincerely, TRC Environmental Corporation

Coleman Landolt Ron Landolt, CAC Industrial Hygienist NW Region SIH Practice Manager

Appendix A – Photo Pages

VA MEDICAL CENTER – EXTERIOR COVERED WALKWAYS

OVERVIEW PHOTOGRAPHIC LOG

SUSPECT ASBESTOS CONTAINING MATERIALS PHOTOGRAPHIC LOG

Sample Numbers: C-1A thru C-1I

Material Description: Asphaltic Roof System & Associated Underlayment

Material Color: Not Indicated

Accessible Material: Accessible

Reason Inaccessible: N/A

Asbestos Detected: Negative

Asbestos Type: No Asbestos Detected

Homogeneous Area: Corridor Roof

Total Approximate Quantity: 20,000 SF

Condition: Good

Material Type: Misc.

NESHAP Category: N/A

Notes: Not Applicable

Sample Numbers: C-2A, C-2B, C-2C

Material Description: Cement Board

Material Color: Not Indicated

Accessible Material: Accessible

Reason Inaccessible: N/A

Asbestos Detected: Positive

Asbestos Type: 30% Chrysotile

Homogeneous Area: Covered Corridor

Total Approximate Quantity: 180 SF

Condition: Good

Material Type: Misc.

NESHAP Category: Cat II

Sample Numbers: C-3A, C-3B, C-3C

Material Description: Brick Grout

Material Color: Not Indicated

Accessible Material: Accessible

Reason Inaccessible: N/A

Asbestos Detected: Negative

Asbestos Type: No Asbestos Detected

Homogeneous Area: Corridor Wall

Total Approximate Quantity: 990 SF

Condition: Good

Material Type: Misc.

Sample Numbers: C-4A, C-4B, C-4C

Material Description: Sheet Vinyl Flooring & Associated Glue

Material Color: Not Indicated

Accessible Material: Accessible

Reason Inaccessible: N/A

Asbestos Detected: Negative

Asbestos Type: No Asbestos Detected

Homogeneous Area: 75 Entry

Total Approximate Quantity: 14 SF

Condition: Good

Material Type: Misc.

Sample Numbers: C-5A, C-5B, C-5C

Material Description: Brown Cove Base & Associated Glue

Material Color: Not Indicated

Accessible Material: Accessible

Reason Inaccessible: N/A

Asbestos Detected: Negative

Asbestos Type: No Asbestos Detected

Homogeneous Area: 75 Entry

Total Approximate Quantity: 2 LF

Condition: Good

Material Type: Misc.

Sample Numbers: C-6A, C-6B, C-6C

Material Description: Support Beam

Material Color: Not Indicated

Accessible Material: Accessible

Reason Inaccessible: N/A

Asbestos Detected: Negative

Asbestos Type: No Asbestos Detected

Homogeneous Area: 75 Entry

Total Approximate Quantity: 14 SF

Condition: Good

Material Type: Misc.

Sample Numbers: C-7A, C-7B, C-7C

Material Description: Soil

Material Color: Not Indicated

Accessible Material: Accessible

Reason Inaccessible: N/A

Asbestos Detected: Positive

Asbestos Type: Chrysotile

Homogeneous Area: Beneath T2 Walkway

Total Approximate Quantity: 120 SF

Condition: Good

Material Type: Misc.

Sample Numbers: C-8A, C-8B, C-8C

Material Description: Adhesive

Material Color: Not Indicated

Accessible Material: Accessible

Reason Inaccessible: N/A

Asbestos Detected: Negative

Asbestos Type: No Asbestos Detected

Homogeneous Area: 69

Total Approximate Quantity: 3 SF

Condition: Good

Material Type: Misc.

LEAD CONTAINING PAINT PHOTOGRAPHIC LOG

Sample Numbers: C-L-1

Sample Location: Fascia

Description: Exterior Yellow

Laboratory Result (%): 40%

Substrate: Wood

Paint Locations: Corridor Fascia

Sample Numbers: C-L-2

Sample Location: Fascia

Description: Exterior Yellow

Laboratory Result (%): 34%

Sample Numbers: C-L-3

Sample Location: Fascia

Description: Exterior Yellow

Laboratory Result (%): 37%

Sample Numbers: C-L-4

Sample Location: T1

Description: Exterior Gray

Laboratory Result (%): 0.28%

Paint Locations: Exterior Corridor Walkway

Sample Numbers: C-L-5

Sample Location: T1

Description: Exterior Gray

Laboratory Result (%): <0.0058%

Sample Numbers: C-L-6

Sample Location: T1

Description: Exterior Gray

Laboratory Result (%): <0.0057%

Sample Numbers: C-L-7

Sample Location: 68

Description: Exterior Yellow

Laboratory Result (%): 0.037%

Paint Locations: Columns

Sample Numbers: C-L-8

Sample Location: 68

Description: Exterior Yellow

Laboratory Result (%): 20%

Sample Numbers: C-L-9

Sample Location: 68

Description: Exterior Yellow

Laboratory Result (%): 27%

Sample Numbers: C-L-10

Sample Location: 68 Deck Floor

Description: Exterior Gray

Laboratory Result (%) :0.012%

Paint Locations: 68 Deck

Sample Numbers: C-L-11

Sample Location: 68 Deck Support Beams

Description: Exterior White

Laboratory Result (%): 0.0074%

Paint Locations: 68 Deck

Sample Numbers: C-L-12

Sample Location: Building 68 Deck

Description: Soil

Laboratory Result (ppm): 3,300

Sample Numbers: C-L-13

Sample Location: Ceiling

Description: Interior Yellow

Laboratory Result (%): 0.0075%

Paint Locations: 75

Sample Numbers: C-L-14

Sample Location: Ceiling

Description: Interior Yellow

Laboratory Result (%): 0.12%

Paint Locations: 78

Sample Numbers: C-L-15

Sample Location: Ceiling

Description: Interior Yellow

Laboratory Result (%): 11%

Paint Locations: 74

Sample Numbers: C-L-16

Sample Location: Handrail

Description: Exterior Yellow

Laboratory Result (%): 13%

Paint Locations: T1-T2

Sample Numbers: C-L-17

Sample Location: Handrail

Description: Exterior Yellow

Laboratory Result (%): 14%

Paint Locations: 68

Sample Numbers: C-L-18

Sample Location: Handrail

Description: Exterior Yellow

Laboratory Result (%): 14%

Paint Locations: Loading Dock

Sample Numbers: C-L-19

Sample Location: Wall

Description: Interior Yellow

Laboratory Result (%): 19%

Sample Numbers: C-L-20

Sample Location: Wall

Description: Interior Yellow

Laboratory Result (%): 0.0076%

Sample Numbers: C-L-21

Sample Location: Wall

Description: Interior Yellow

Laboratory Result (%): 0.010%

Sample Numbers: C-L-22

Sample Location: Beneath Walkway

Laboratory Result (ppm): 270

Sample Numbers: C-L-23

Sample Location: Beneath Walkway

Laboratory Result (ppm): 4,800

Sample Numbers: C-L-25

Sample Location: Downspout

Description: Exterior Yellow

Laboratory Result (%): 41%

Substrate: Metal

Paint Locations: 69

HAZARDOUS MATERIALS INVENTORY PHOTOGRAPHIC LOG

Area: Corridor

Description: Heavy Metal Containing Devices – Fluorescent (Silver Tip) Light Tubes

Quantity: 34

Appendix B – Sample Locations

HAZARDOUS MATERIALS SURVEY REPORT

TRC Project No.: 674884 Figure: 1.1

Drawn by: JS Date: June 2025Reviewed by: RAL

4000 SE International Way, Suite F101

Milwaukie, Oregon 97222

Phone: (503) 387-3251

VALI COOPER INTERNATIONAL, LLC

VA MEDICAL CENTER – EXTERIOR COVERED WALKWAYS

77 WAINWRIGHT DRIVE

WALLA WALLA, WASHINGTON 99362

LEGEND

Non-Asbestos Sample Location

Asbestos-Containing Sample Location

C-1A

C-1B

C-1C

C-2A

C-2B

C-2CC-3A

C-3B

C-3C

C-4A

C-4B

C-4C

C-5A

C-5B

C-5C

C-6A

C-6B

C-6C

C-1G

C-1H

C-1I

C-1DC-1E

C-1F

C-7A

C-7B

C-7C

C-8A

C-8B

C-8C

HAZARDOUS MATERIALS SURVEY REPORT

TRC Project No.: 674884 Figure: 1.2

Drawn by: JS Date: June 2025Reviewed by: RAL

4000 SE International Way, Suite F101

Milwaukie, Oregon 97222

Phone: (503) 387-3251

VALI COOPER INTERNATIONAL, LLC

VA MEDICAL CENTER – EXTERIOR COVERED WALKWAYS

77 WAINWRIGHT DRIVE

WALLA WALLA, WASHINGTON 99362

LEGEND

Lead Soil Sample Location

Lead Paint Sample Location

C-L-1

C-L-2

C-L-3

C-L-4

C-L-5

C-L-6

C-L-8

C-L-7

C-L-9

C-L-10

C-L-11

C-L-12

C-L-13

C-L-14

C-L-15

C-L-17

C-L-16

C-L-18

C-L-19

C-L-20

C-L-21

C-L-23

C-L-22

C-L-25

Appendix C – Laboratory Analytical Data Sheets

Industrial Hygiene Laboratory 21 Griffin Road North Windsor, CT 06095

(860) 298-6308

67325.ValiCooper.doc

Lab Log #: 0067325

VA Corridors, 77 Wainwright Drive, Walla Walla, WA

CLIENT: Vali Cooper International

Site:

Date Analyzed:

Date Received:

06/02/2025

05/30/2025

Project #: 674884.0000.0000

BULK ASBESTOS ANALYSIS REPORT

Asbestos Type

Other Matrix MaterialsSample No.

Asbestos

POLARIZED LIGHT MICROSCOPY by EPA 600/R-93/116

Sample Location Homogeneous

Material Description

See Diagram cellulose NoneC-1A ND80%LAYER 1 Black Associated Underlayment fibrous glass NoneC-1A ND30%LAYER 2 Black/Green Asphaltic Roof System fibrous glass NoneC-1A ND30%LAYER 3 Black/Grey Asphaltic Roof System

See Diagram cellulose NoneC-1B ND80%LAYER 1 Black Associated Underlayment fibrous glass NoneC-1B ND30%LAYER 2 Black/Green Asphaltic Roof System fibrous glass NoneC-1B ND30%LAYER 3 Black/Grey Asphaltic Roof System

See Diagram cellulose NoneC-1C ND80%LAYER 1 Black Associated Underlayment fibrous glass NoneC-1C ND30%LAYER 2 Black/Green Asphaltic Roof System fibrous glass NoneC-1C ND30%LAYER 3 Black/Grey Asphaltic Roof System

See Diagram cellulose NoneC-1D ND80%LAYER 1 Black Associated Underlayment fibrous glass NoneC-1D ND30%LAYER 2 Black/Green Asphaltic Roof System fibrous glass NoneC-1D ND30%LAYER 3 Black/Grey Asphaltic Roof System

See Diagram cellulose NoneC-1E ND80%LAYER 1 Black Associated Underlayment fibrous glass NoneC-1E ND30%LAYER 2 Black/Green Asphaltic Roof System fibrous glass NoneC-1E ND30%LAYER 3 Black/Grey Asphaltic Roof System

See Diagram cellulose NoneC-1F ND80%LAYER 1 Black Associated Underlayment fibrous glass NoneC-1F ND30%LAYER 2 Black/Green Asphaltic Roof System fibrous glass NoneC-1F ND30%LAYER 3 Black/Grey Asphaltic Roof System

TRC LABORATORY ASBESTOS ANALYTICAL ACCREDITATIONS

NVLAP Lab Code 101424-0

RI #PLM00007 TX #300354

CO# AL-21772

AIHA LAP #100122

VT #An-000020

LA#05011

CT #PH-0426

VA #3333 000283

PA#68-03387

NY #10980

NV #CT00004

WA #C1071

WV #000622

CA #2907

ME LB-0071

AZ #AZ0944

PHIL#ALL-461

MA #AA000052

HI #L-09-004

21 Griffin Road North Windsor, CT 06095

(860) 298-6308

67325.ValiCooper.doc

Asbestos Type

Other Matrix MaterialsSample No.

Asbestos

POLARIZED LIGHT MICROSCOPY by EPA 600/R-93/116

Sample Location Homogeneous

Material Description

See Diagram cellulose NoneC-1G ND80%LAYER 1 Black Associated Underlayment fibrous glass NoneC-1G ND30%LAYER 2 Black/Green Asphaltic Roof System fibrous glass NoneC-1G ND30%LAYER 3 Black/Grey Asphaltic Roof System

See Diagram cellulose NoneC-1H ND80%LAYER 1 Black Associated Underlayment fibrous glass NoneC-1H ND30%LAYER 2 Black/Green Asphaltic Roof System fibrous glass NoneC-1H ND30%LAYER 3 Black/Grey Asphaltic Roof System

See Diagram cellulose NoneC-1I ND80%LAYER 1 Black Associated Underlayment fibrous glass NoneC-1I ND30%LAYER 2 Black/Green Asphaltic Roof System fibrous glass NoneC-1I ND30%LAYER 3 Black/Grey Asphaltic Roof System

T1 - - - ChrysotileC-2A 30%Grey Cement Board

T1 - - - -C-2B NA/PS- -

T2 - - - -C-2C NA/PS- -

68 - - - NoneC-3A NDRed Brick Grout

69 - - - NoneC-3B NDRed Brick Grout

80 - - - NoneC-3C NDRed Brick Grout

75 - - - NoneC-4A NDLAYER 1 Yellow Associated Glue cellulose NoneC-4A ND10%LAYER 2 White/Grey Sheet Vinyl Flooring

75 - - - NoneC-4B NDLAYER 1 Yellow Associated Glue cellulose NoneC-4B ND10%LAYER 2 White/Grey Sheet Vinyl Flooring

75 - - - NoneC-4C NDLAYER 1 Yellow Associated Glue cellulose NoneC-4C ND10%LAYER 2 White/Grey Sheet Vinyl Flooring

75 - - - NoneC-5A NDLAYER 1 Tan Associated Glue

- - - NoneC-5A NDLAYER 2 Brown Cove Base

TRC LABORATORY ASBESTOS ANALYTICAL ACCREDITATIONS

NVLAP Lab Code 101424-0

RI #PLM00007 TX #300354

CO# AL-21772

AIHA LAP #100122

VT #An-000020

LA#05011

CT #PH-0426

VA #3333 000283

PA#68-03387

NY #10980

NV #CT00004

WA #C1071

WV #000622

CA #2907

ME LB-0071

AZ #AZ0944

PHIL#ALL-461

21 Griffin Road North Windsor, CT 06095

(860) 298-6308

67325.ValiCooper.doc

Asbestos Type

Other Matrix MaterialsSample No.

Asbestos

POLARIZED LIGHT MICROSCOPY by EPA 600/R-93/116

Sample Location Homogeneous

Material Description

75 - - - NoneC-5B NDLAYER 1 Tan Associated Glue

- - - NoneC-5B NDLAYER 2 Brown Cove Base

75 - - - NoneC-5C NDLAYER 1 Tan Associated Glue

- - - NoneC-5C NDLAYER 2 Brown Cove Base

75 - - - NoneC-6A NDWhite Support Beam

75 - - - NoneC-6B NDWhite Support Beam

75 - - - NoneC-6C NDWhite Support Beam

T2 - - - ChrysotileC-7A PresentBrown Soil Sample

T2 - - - ChrysotileC-7B PresentBrown Soil Sample

T2 - - - ChrysotileC-7C PresentBrown Soil Sample

69 - - - NoneC-8A NDColorless Adhesive

69 - - - NoneC-8B NDColorless Adhesive

69 - - - NoneC-8C NDColorless Adhesive

Trace - asbestos was observed at level of 1% or less - This is the reporting limit NA/PS - Not Analyzed / Positive Stop SNA - Sample Not Analyzed- See Chain of Custody for details Notes: Asbestos-Containing Material (ACM) is any material containing more than 1% asbestos

The Laboratory at TRC follows 18/01A EPA -- 40 CFR Appendix E to subpart E of Part 763, Interim Method of the Determination of Asbestos in Bulk Insulation Samples and 18/A03 EPA 600/R-93/116: Method for the Determination of Asbestos in Bulk Building Materials which utilize polarized light microscopy (PLM). Our analysts have completed an accredited course in asbestos identification. TRC's Laboratory is accredited under the National Voluntary Laboratory Accreditation Program (NVLAP), for Bulk Asbestos Fiber Analysis, NVLAP Code 101424-01. TRC is accredited by the AIHA Laboratory Accreditation Programs AIHA LAP (ID: LAP-100122) in the Industrial Hygiene Program (IHLAP) for PLM. Asbestos content is determined by visual estimate unless otherwise indicated. Quality Control is performed in-house on at least 10% of samples and QC data related to the samples is available upon written request from client.

This report shall not be reproduced, except in full, without the written approval of TRC. This report must not be used by the client to claim product endorsement by NVLAP or any agency of the U.S. Government. This report relates only to the items tested, as received by the laboratory.

ND - asbestos was not detected

Note: Polarized-light microscopy is not consistently reliable in detecting asbestos in floor coverings and similar non-friable organically bound materials. In those cases, EPA recommends, and certain states (e.g. NY) require, that negative results be confirmed by quantitative transmission electron microscopy.

Analyzed by: Reviewed by Date Issued

06/02/2025Kathleen Williamson, Laboratory Manager Najaat Bhura, Approved Signatory

TRC LABORATORY ASBESTOS ANALYTICAL ACCREDITATIONS

NVLAP Lab Code 101424-0

RI #PLM00007 TX #300354

CO# AL-21772

AIHA LAP #100122

VT #An-000020

LA#05011

CT #PH-0426

VA #3333 000283

PA#68-03387

NY #10980

NV #CT00004

WA #C1071

WV #000622

CA #2907

ME LB-0071

AZ #AZ0944

PHIL#ALL-461

Approved by:

Approved Signatory Frank Ehrenfeld

Report for:

Jason Stone TRC Companies - OR 4000 SE International Way Ste F101 Milwaukie, OR 97222

Regarding:

Eurofins Built Environment Testing East, LLC Project: 674884 - Walla Walla-VA Corridors - 713983 & 713984

EML ID: 4093078

All samples were received in acceptable condition unless noted in the Report Comments portion in the body of the report. Due to the nature of the analyses performed, field blank correction of results is not applied. The results relate only to the samples as received and tested.

Eurofins Built Environment Testing East, LLC ("the Company"), a member of the Eurofins Built Environment Testing group of companies, 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:

Lead in Paint Chips (EPA SW-846 7000B/3050B) (ext): 06-03- Lead in Soil (EPA SW-846 7000B/3050B) (ext): 06-03-2025

Lab No.: 7848790 Client No.: C-L-1

Description:

Location: Exterior Yellow - Wood - Fascia

Result (% by Weight): 40 Result (ppm): 400000 Comments:

Lab No.: 7848791 Client No.: C-L-2

Description:

Location: Exterior Yellow - Wood - Fascia

Result (% by Weight): 34 Result (ppm): 340000 Comments:

Lab No.: 7848792 Client No.: C-L-3

Description:

Location: Exterior Yellow - Wood - Fascia

Result (% by Weight): 37 Result (ppm): 370000 Comments:

Lab No.: 7848793 Client No.: C-L-4

Description:

Location: Exterior Gray - Wood - T1

Result (% by Weight): 0.28 Result (ppm): 2800 Comments:

Lab No.: 7848794 Client No.: C-L-5

Description:

Location: Exterior Gray - Wood - T1

Result (% by Weight): <0.0058 Result (ppm): <58 Comments:

Lab No.: 7848795 Client No.: C-L-6

Description:

Location: Exterior Gray - Wood - T1

Result (% by Weight): <0.0057 Result (ppm): <57 Comments:

Lab No.: 7848796 Client No.: C-L-7

Description:

Location: Exterior Yellow - Wood - 68

Result (% by Weight): 0.037 Result (ppm): 370 Comments:

Lab No.: 7848797 Client No.: C-L-8

Description:

Location: Exterior Yellow - Wood - 68

Result (% by Weight): 20 Result (ppm): 200000 Comments:

Laboratory Director

Approved By:

Date Analyzed:

6/2/2025Date Received:

Analyst:

Please refer to the Appendix of this report for further information regarding your analysis.

Signature:

Chad Shaffer

06/03/2025 Frank E. Ehrenfeld, III

9000 Commerce Parkway Suite B Mt. Laurel, New Jersey 08054

Telephone: 856-231-9449 Email: customerservice@iatl.com

CERTIFICATE OF ANALYSIS

Client: TRC Solutions

4105 SE International Way Suite 505 Milwaukie, OR 97222

6/3/2025Report Date:

Report No.: 713983 - Lead Paint Project: Walla Walla-VA Corridors Project No.: 674884

LEAD PAINT SAMPLE ANALYSIS SUMMARY

Client: TRC079

Dated : 6/3/2025 1:51:21 Page 1 of 7

Lab No.: 7848798 Client No.: C-L-9

Description:

Location: Exterior Yellow - Wood - 68

Result (% by Weight): 27 Result (ppm): 270000 Comments:

Lab No.: 7848799 Client No.: C-L-10

Description:

Location: Exterior Gray - Wood - 68 Deck Floor

Result (% by Weight): 0.012 Result (ppm): 120 Comments:

Lab No.: 7848800 Client No.: C-L-11

Description:

Location: Exterior White - Wood - 68 Deck Support Beams

Result (% by Weight): 0.0074 Result (ppm): 74 Comments:

Laboratory Director

Approved By:

Date Analyzed:

6/2/2025Date Received:

Analyst:

Please refer to the Appendix of this report for further information regarding your analysis.

Signature:

Chad Shaffer

06/03/2025 Frank E. Ehrenfeld, III

9000 Commerce Parkway Suite B Mt. Laurel, New Jersey 08054

Telephone: 856-231-9449 Email: customerservice@iatl.com

CERTIFICATE OF ANALYSIS

Client: TRC Solutions

4105 SE International Way Suite 505 Milwaukie, OR 97222

6/3/2025Report Date:

Report No.: 713983 - Lead Paint Project: Walla Walla-VA Corridors Project No.: 674884

LEAD PAINT SAMPLE ANALYSIS SUMMARY

Dated : 6/3/2025 1:51:21 Page 2 of 7

Lab No.: 7848802 Client No.: C-L-13

Description:

Location: Interior Yellow - Wood - Ceiling

Result (% by Weight): 0.0075 Result (ppm): 75 Comments:

Lab No.: 7848803 Client No.: C-L-14

Description:

Location: Interior Yellow - Wood - Ceiling

Result (% by Weight): 0.12 Result (ppm): 1200 Comments:

Lab No.: 7848804 Client No.: C-L-15

Description:

Location: Interior Yellow - Wood - Ceiling

Result (% by Weight): 11 Result (ppm): 110000 Comments:

Lab No.: 7848805 Client No.: C-L-16

Description:

Location: Exterior Yellow - Wood - Handrail

Result (% by Weight): 13 Result (ppm): 130000 Comments:

Lab No.: 7848806 Client No.: C-L-17

Description:

Location: Exterior Yellow - Wood - Handrail

Result (% by Weight): 14 Result (ppm): 140000 Comments:

Lab No.: 7848807 Client No.: C-L-18

Description:

Location: Exterior Yellow - Wood - Handrail

Result (% by Weight): 14 Result (ppm): 140000 Comments:

Lab No.: 7848808 Client No.: C-L-19

Description:

Location: Interior Yellow - Wood - Wall

Result (% by Weight): 19 Result (ppm): 190000 Comments:

Lab No.: 7848809 Client No.: C-L-20

Description:

Location: Interior Yellow - Wood - Wall

Result (% by Weight): 0.0076 Result (ppm): 76 Comments:

Laboratory Director

Approved By:

Date Analyzed:

6/2/2025Date Received:

Analyst:

Please refer to the Appendix of this report for further information regarding your analysis.

Signature:

Chad Shaffer

06/03/2025 Frank E. Ehrenfeld, III

9000 Commerce Parkway Suite B Mt. Laurel, New Jersey 08054

Telephone: 856-231-9449 Email: customerservice@iatl.com

CERTIFICATE OF ANALYSIS

Client: TRC Solutions

4105 SE International Way Suite 505 Milwaukie, OR 97222

6/3/2025Report Date:

Report No.: 713983 - Lead Paint Project: Walla Walla-VA Corridors Project No.: 674884

LEAD PAINT SAMPLE ANALYSIS SUMMARY

Dated : 6/3/2025 1:51:21 Page 3 of 7

Lab No.: 7848810 Client No.: C-L-21

Description:

Location: Interior Yellow - Wood - Wall

Result (% by Weight): 0.010 Result (ppm): 100 Comments:

Laboratory Director

Approved By:

Date Analyzed:

6/2/2025Date Received:

Analyst:

Please refer to the Appendix of this report for further information regarding your analysis.

Signature:

Chad Shaffer

06/03/2025 Frank E. Ehrenfeld, III

9000 Commerce Parkway Suite B Mt. Laurel, New Jersey 08054

Telephone: 856-231-9449 Email: customerservice@iatl.com

CERTIFICATE OF ANALYSIS

Client: TRC Solutions

4105 SE International Way Suite 505 Milwaukie, OR 97222

6/3/2025Report Date:

Report No.: 713983 - Lead Paint Project: Walla Walla-VA Corridors Project No.: 674884

LEAD PAINT SAMPLE ANALYSIS SUMMARY

Dated : 6/3/2025 1:51:21 Page 4 of 7

Lab No.: 7848813 Client No.: C-L-25

Description:

Location: Exterior Yellow - Metal - Downspout

Result (% by Weight): 41 Result (ppm): 410000 Comments:

Laboratory Director

Approved By:

Date Analyzed:

6/2/2025Date Received:

Analyst:

Please refer to the Appendix of this report for further information regarding your analysis.

Signature:

Chad Shaffer

06/03/2025 Frank E. Ehrenfeld, III

9000 Commerce Parkway Suite B Mt. Laurel, New Jersey 08054

Telephone: 856-231-9449 Email: customerservice@iatl.com

CERTIFICATE OF ANALYSIS

Client: TRC Solutions

4105 SE International Way Suite 505 Milwaukie, OR 97222

6/3/2025Report Date:

Report No.: 713983 - Lead Paint Project: Walla Walla-VA Corridors Project No.: 674884

LEAD PAINT SAMPLE ANALYSIS SUMMARY

Dated : 6/3/2025 1:51:21 Page 5 of 7

Appendix to Analytical Report:

Customer Contact: Ron Landolt Method: ASTM D3335-85a, US EPA SW846 3050B:7000B

This appendix seeks to promote greater understanding of any observations, exceptions, special instructions, or circumstances that the laboratory needs to communicate to the client concerning the above samples. The information below is used to help promote your ability to make the most informed decisions for you and your customers.

Please note the following points of contact for any questions you may have.

iATL Customer Service: customerservice@iatl.com iATL Office Manager:wchampion@iatl.com iATL Account Representative: Shirley Clark Sample Login Notes: See Batch Sheet Attached Sample Matrix: Paint Exceptions Noted: See Following Pages

General Terms, Warrants, Limits, Qualifiers:

General information about iATL capabilities and client/laboratory relationships and responsibilities are spelled out in iATL policies that are listed at www.iATL.com and in our Quality Assurance Manual per ISO 17025 standard requirements. The information therein is a representation of iATL definitions and policies for turnaround times, sample submittal, collection media, blank definitions, quantification issues and limit of detection, analytical methods and procedures, sub-contracting policies, results reporting options, fees, terms, and discounts, confidentiality, sample archival and disposal, and data interpretation.

iATL warrants the test results to be of a precision normal for the type and methodology employed for each sample submitted. iATL disclaims any other warrants, expressed or implied, including warranty of fitness for a particular purpose and warranty of merchantability. iATL accepts no legal responsibility for the purpose for which the client uses test results. Any analytical work performed must be governed by our Standard Terms and Conditions. Prices, methods and detection limits may be changed without notification. Please contact your Customer Service Representative for the most current information.

This confidential report relates only to those item(s) tested and does not represent an endorsement by NIST-NVLAP, AIHA LAP LLC, or any agency of local, state or province governments nor of any agency of the U.S. government.

This report shall not be reproduced except in full, without written approval of the laboratory.

Information Pertinent to this Report:

Analysis by ASTM D3335-85a by AAS

Certification:

- National Lead Laboratory Program (NLLAP): AIHA-LAP, LLC No. 100188

- NYSDOH-ELAP No. 11021

This report meets the standards set forth in the EPA's National Lead Laboratory Accreditation Program (NLLAP) through the Laboratory Quality System Requirements (LQSR) Revision 3.0 November 5, 2007. All Environmental Lead Proficiency Analytical Testing (ELPAT) is through the AIHA-PAT established program.

Regulatory limit is 0.5% lead by weight (EPA/HUD guidelines). Recommend multiple sampling for all samples less than regulatory limit for confirmation.

All results are based on the samples as received at the lab. iATL assumes that appropriate sampling methods have been used and that the data upon which these results are based have been accurately supplied by the client.

Method Detection Limit (MDL) per EPA Method 40CFR Part 136 Apendix B.

Reporting Limit (RL) based upon Lowest Standard Determined (LSD) in accordance with AIHA-ELLAP policies.

LSD=0.2 ppm MDL=0.006% by weight. RL= 0.010% by weight (based upon 100 mg sampled).

Disclaimers / Qualifiers:

There may be some samples in this project that have a "NOTE:" associated with a sample result. We use added disclaimers or qualifiers to inform the client about something that requires further explanation. Here is a complete list with highlighted disclaimers pertinent to this project. For a full explanation of these and other disclaimers, please inquire at customerservice@iatl.com.

9000 Commerce Parkway Suite B Mt. Laurel, New Jersey 08054

Telephone: 856-231-9449 Email: customerservice@iatl.com

CERTIFICATE OF ANALYSIS

Client: TRC Solutions 4105 SE International Way Suite 505 Milwaukie, OR 97222

6/3/2025Report Date:

Report No.: 713983 - Lead Paint Project: Walla Walla-VA Corridors Project No.: 674884

Page 6 of 7Dated : 6/3/2025 1:51:21

* Insufficient sample provided to perform QC reanalysis (<200 mg) ** Not enough sample provided to analyze (<50 mg) *** Matrix / substrate interference possible.

< less than sign, signifies none-detected below the empirical value based upon sub-sampled mass. This is often below the Reporting Limit (see above).

Mt. Laurel, New Jersey 08054

Telephone: 856-231-9449 Email: customerservice@iatl.com

CERTIFICATE OF ANALYSIS

Client: TRC Solutions 4105 SE International Way Suite 505 Milwaukie, OR 97222

6/3/2025Report Date:

Report No.: 713983 - Lead Paint Project: Walla Walla-VA Corridors Project No.: 674884

Page 7 of 7Dated : 6/3/2025 1:51:21

Lab No.: 7848801 Client No.: C-L-12

Location: Building 68 Decking Result (mg/kg): 3300*

Laboratory Director

Approved By:

Date Analyzed:

6/2/20…