C-6 Attachment Thomas Creek Hazmat Assessment.pdf

Prepared for: USDA Forest Service Fremont-Winema NF HQ 1301 South G Street Lakeview, OR 97630

Prepared by: DH Environmental, Inc.

1011 SW Klickitat Way, Suite 107 Seattle, WA 98134

U.S. Forest Service IDIQ Contract Region 6 & 10 Hazmat Services

Contract Number: 12046W18C0007

Hazardous Building Materials Assessment

USDA Forest Service Thomas Creek Work Center

Lakeview, OR 97630

USDA Forest Service – Thomas Creek Work Center, Lakeview, OR 97630

12 May 2021

DH Environmental, Inc. | 1011 SW Klickitat Way, Suite 107 | Seattle, WA 98134

206.939.0886

EXECUTIVE SUMMARY

The USDA Forest Service retained DH Environmental, Inc. (DH Environmental) to conduct a hazardous building materials assessment at the Thomas Creek Work Center located in Lakeview, OR. DH Environmental provided one

AHERA accredited building inspector and one Senior Project Scientist to conduct the assessment on May 12th, 2021. The scope of the services included assessing three buildings for hazardous building materials in anticipation of the forthcoming demolition.

DH Environmental assessed the buildings for the following hazardous building materials:

▪ Asbestos-containing materials (ACM);

▪ Lead-based paints (LBP);

▪ Other hazardous building materials (universal waste, refrigerant gases, propane cylinders and mercury thermostat switches).

Twenty bulk samples of suspect asbestos-containing materials were collected and analyzed using polarized light microscopy (PLM). Twelve of the materials sampled and analyzed were found to contain asbestos greater than the 1% reporting limit by PLM.

One-hundred and thirteen (113) samples were collected and analyzed using an X-ray fluorescence analyzer (XRF).

Five of the samples were found to contain lead above the established threshold of 1 mg/cm². These materials were found on the exterior of the barracks.

Other hazardous materials such as misc. petroleum-based containers, batteries, mercury switch, propane cylinder, generator, gas powered lawn mower, home heating oil tank (quantity unknown), 1,000-gallon diesel tank (residual), and a large home propane tank (quantity unknown) are inventoried in the report.

USDA Forest Service – Thomas Creek Work Center, Lakeview, OR 97630

12 May 2021

DH Environmental, Inc. | 1011 SW Klickitat Way, Suite 107 | Seattle, WA 98134

206.939.0886

PROJECT INFORMATION

Project Title USDA Forest Service – Thomas Creek Work Center

Hazardous Building Materials Assessment

Assessment Conducted by DH Environmental, Inc.

1011 SW Klickitat Way, Suite 107 Seattle, WA 98134

Project Owner USDA Forest Service

Contract Vehicle USDA Forest Service IDIQ Contract Contract # 12046W18C0007

USDA Forest Service Contracting Officer Jared Machgan Contract Specialist

Assessment Personnel Brian Johnson, OHST, CIT AHERA Accredited Building Inspector Certified Lead Risk Assessor (WA State)

Stacy Fox, CHMM Senior Project Scientist

Survey Date(s) 12 May 2021

Report Delivery Date 28 May 2021

Report Prepared by

Brian Johnson, OHST, CIT AHERA Accredited Building Inspector Certified Lead Risk Assessor (WA State) EHS Program Manager

Report Reviewed by

David Hill, PE, CHMM, CPEA Principal DH Environmental, Inc.

USDA Forest Service – Thomas Creek Work Center, Lakeview, OR 97630

12 May 2021

DH Environmental, Inc. | 1011 SW Klickitat Way, Suite 107 | Seattle, WA 98134

206.939.0886

Table of Contents

EXECUTIVE SUMMARY

PROJECT INFORMATION

1.0 INTRODUCTION

1.1 Scope of Services

1.2 Assessment Objective

2.0 SITE DESCRIPTION

3.0 ASBESTOS CONTAINING MATERIALS ASSESSMENT

3.1 Applicable ACM Regulations

3.2 Sampling Methodology

3.3 Sampling Results

4.0 LEAD BASED PAINT (LBP) ASSESSMENT

4.1 Applicable LBP Regulations

4.2 LBP Sampling Methodology

4.3 LBP Sampling Results

5.0 OTHER HAZARDOUS BUILDING MATERIALS ASSESSMENT

5.1 Universal Waste

5.2 Refrigerant Gases

5.3 Fire Extinguishers

5.4 Radioactive Exit Signs and Smoke Alarms

5.5 Summary of Other Hazardous Building Materials

6.0 CONCLUSIONS AND RECOMMENDATIONS

USDA Forest Service – Thomas Creek Work Center, Lakeview, OR 97630

12 May 2021

DH Environmental, Inc. | 1011 SW Klickitat Way, Suite 107 | Seattle, WA 98134

206.939.0886

6.1 Asbestos Containing Materials

6.2 Lead-Based Paint

7.0 LIMITATIONS

List of Figures

Figure 1 Gas House Lead Paint Assessment

Figure 2 Warehouse Lead Paint and Asbestos Assessment

Figure 3 Barracks Lead Paint Assessment (Exterior)

Figure 4 Barracks Lead Paint Assessment (Interior)

Figure 5 Barracks Asbestos Assessment (Interior and Exterior)

Attachment 1 Site Photos

Attachment 2 Laboratory Analytical Reports

Attachment 3 XRF Data

Attachment 4 Laboratory Certifications

Attachment 5 Inspector Certifications https://dhenviro.sharepoint.com/Projects/Port%20of%20Tacoma%20Cat%202%20-%20IH%20and%20HBM/Port%20of%20Tacoma%20-%20HBM%20Container%20Crane/Pier%203/DH%20Environmental%20HBM%20Assessment%20Report%20-%20Pier%203%20Cranes%20-%20Port%20of%20Tacoma.docx#_Toc17353409 https://dhenviro.sharepoint.com/Projects/Port%20of%20Tacoma%20Cat%202%20-%20IH%20and%20HBM/Port%20of%20Tacoma%20-%20HBM%20Container%20Crane/Pier%203/DH%20Environmental%20HBM%20Assessment%20Report%20-%20Pier%203%20Cranes%20-%20Port%20of%20Tacoma.docx#_Toc17353411 https://dhenviro.sharepoint.com/Projects/Port%20of%20Tacoma%20Cat%202%20-%20IH%20and%20HBM/Port%20of%20Tacoma%20-%20HBM%20Container%20Crane/Pier%203/DH%20Environmental%20HBM%20Assessment%20Report%20-%20Pier%203%20Cranes%20-%20Port%20of%20Tacoma.docx#_Toc17353413 https://dhenviro.sharepoint.com/Projects/Port%20of%20Tacoma%20Cat%202%20-%20IH%20and%20HBM/Port%20of%20Tacoma%20-%20HBM%20Container%20Crane/Pier%203/DH%20Environmental%20HBM%20Assessment%20Report%20-%20Pier%203%20Cranes%20-%20Port%20of%20Tacoma.docx#_Toc17353414

USDA Forest Service – Thomas Creek Work Center, Lakeview, OR 97630

12 May 2021

DH Environmental, Inc. | 1011 SW Klickitat Way, Suite 107 | Seattle, WA 98134

206.939.0886

1.0 INTRODUCTION

The USDA Forest Service retained DH Environmental, Inc. (DH Environmental) to conduct a hazardous building materials assessment at the Thomas Creek Work Center located in Lakeview, OR. DH Environmental provided one

AHERA accredited building inspector and one Senior Project Scientist to conduct the assessment on May 12th, 2021. The Work was awarded and conducted under USDA Forest Contract Number 12046W18C0007, Regional

Hazmat Services IDIQ.

1.1 Scope of Services

The scope of the services included assessing three buildings for hazardous building materials in anticipation of the forthcoming demolition in accordance with United State Environmental Protection Agency 40 CFR Part 61, 261, 262, 29 CFR 1910.1001, and 1926.1101, Department of Environmental Quality OAR 340-248-0270 and the State of Oregon’s Hazardous Waste Regulations OAR 340. The following hazardous materials were assessed:

▪ Asbestos-containing materials (ACM);

▪ Lead-based paints (LBP);

▪ Other hazardous building materials (universal waste, refrigerant gases, propane cylinders and mercury thermostat switches).

1.2 Assessment Objective

The objective of this hazardous building materials assessment is to assist the USDA Forest Service with communicating the presence of hazardous building materials and the presence, location, and quantity of ACM to employees, vendors, and contractors working in the project area. In addition, this assessment is meant to satisfy the requirements for an asbestos survey for the Department of Environmental Quality regulations prior to building demolition or renovation. Regulations require that a complete copy of this assessment be kept in a conspicuous location on-site at all times during activities that may impact known and suspect ACM.

USDA Forest Service – Thomas Creek Work Center, Lakeview, OR 97630

12 May 2021

DH Environmental, Inc. | 1011 SW Klickitat Way, Suite 107 | Seattle, WA 98134

206.939.0886

2.0 SITE DESCRIPTION

The Thomas Creek Work Center was built circa 1957 and originally used as a fire station that housed its crew on site. They used propane to run their hot water heater, refrigerators and cook stoves. The power supply was an old WWII diesel motor with a converter. After 1992, the work center was used intermittently for field crews such as botany, wildlife or fire crews conducting a burn assignment. Crews would stay there for no more than a week at a time. Around 1988, the spring levels lowered allowing wildlife to borough deeper into the water source eventually making it necessary to shut down the Work Center in the early 90s. Since then, the facilities on the site have deteriorated to such a point that they are no longer serviceable.

Building Number Year Constructed Square Feet Description

1320 1957 1,840 Barracks

2200 1975 1,223 Warehouse

2506 1959 96 Gas House

USDA Forest Service – Thomas Creek Work Center, Lakeview, OR 97630

12 May 2021

DH Environmental, Inc. | 1011 SW Klickitat Way, Suite 107 | Seattle, WA 98134

206.939.0886

3.0 ASBESTOS CONTAINING MATERIALS ASSESSMENT

3.1 Applicable ACM Regulations

The Oregon Occupational Safety and Health Administration (Oregon OSHA) and the Department of

Environmental Quality (DEQ) regulate building materials that contain more than 1 percent asbestos as ACM for protection of human health and the environment.

Oregon OSHA regulates worker exposure to airborne asbestos fibers during general work activities and construction and demolition activities in parallel with Federal OSHA regulations (29 CFR 1926.1101). Worker exposure to airborne asbestos fibers must be below the Permissible Exposure Level (PEL) of an 8-hour time-weighted average (8-hr TWA) of 0.1 fiber per cubic centimeter (f/cc) of air. Oregon OSHA regulations establish engineering controls and work practices that are designed to mitigate workers exposure to asbestos in the workplace.

The DEQ regulates the release of airborne asbestos fibers in Oregon and surrounding areas. Specifically, DEQ under OAR 340-248-0260 regulates emission standards and procedural requirements of asbestos during building renovation and demolition projects. This regulation requires that an asbestos survey be conducted prior to demolition, that DEQ be notified prior to commencing with demolition activities, that ACM be removed prior to demolition, and that asbestos-containing waste materials be properly removed and disposed of in a manner that prevents the release of airborne asbestos fibers. In addition, the United States Environmental Protection Agency

(USEPA) requires asbestos abatement workers and supervisors to be trained and certified in accordance with 40

CFR 763 Subpart E, Appendix C. DEQ has analogous training requirements for abatement workers in OAR 340-

248-0130. The EPA and DEQ training and certification requirements apply to abatement work for buildings at the subject property.

3.2 Sampling Methodology

The ACM sampling methodology conducted for this assessment was conducted in accordance with DEQ OAR 340-

248-0270, as well as related AHERA Protocols.

All areas of the interior and exterior were investigated thoroughly looking for suspected ACM. Destructive sampling was needed in some areas to help identify building materials. Where appropriate, suspect ACM was grouped as homogenous if the materials were similar in appearance. The locations of the sample collections are shown in both Figures 2 & 5.

Samples were collected, containerized, and delivered to NVL Environmental Laboratories in Seattle, WA following standard chain of custody procedures. Suspect ACM samples were analyzed per EPA Method 600/R93/116 by

Polarized Light Microscopy (PLM) analysis. NVL is a National Voluntary Laboratory Accreditation Program (NVLAP)

– certified laboratory, certification number 102063-0 (see attachment 4).

USDA Forest Service – Thomas Creek Work Center, Lakeview, OR 97630

12 May 2021

DH Environmental, Inc. | 1011 SW Klickitat Way, Suite 107 | Seattle, WA 98134

206.939.0886

3.3 Sampling Results

Twenty bulk samples of suspect asbestos-containing materials were collected and analyzed using Polarized Light

Microscopy (PLM). Twelve of the materials sampled and analyzed were found to contain asbestos greater than the 1% reporting limit by PLM.

Sample ID Material Description Sample

Location Concentration

Material Quantity Estimate (if applicable)

USFS-TCWC-ACM-01

Layer 1: Brown crumbly fibrous material with black asphaltic mastic

Layer 2: Yellow fluffy debris

Building 1320 ACM (%): ND NA

USFS-TCWC-ACM-02

Layer 1: Off-white vinyl tile with debris

Layer 2: Black asphaltic mastic with debris

Building 1320

ACM (%):

Chrysotile 3% (Layer 2)

100 ft²

USFS-TCWC-ACM-03

Layer 1: Brown rubbery material with debris

Layer 2: Brown brittle mastic

Layer 3: Tan brittle mastic with paint

Building 1320 ACM (%): ND NA

USFS-TCWC-ACM-04

Layer 1: Beige vinyl tile

Building 1320

ACM (%):

Chrysotile 2% (Layer 2)

25 ft²

USFS-TCWC-ACM-05

Layer 1: Dark green vinyl tile

Building 1320

ACM (%):

Chrysotile 7%

(Layer 1)

Chrysotile 3% (Layer 2)

222 ft²

USFS-TCWC-ACM-06

Layer 1: Tan soft mastic with debris

Layer 2: Dark green vinyl

Layer 3: Black asphaltic

Building 1320

ACM (%):

Chrysotile 6%

Chrysotile 4% (Layer 3)

Same as sample

USFS-TCWC-ACM-05

USFS-TCWC-ACM-07

Layer 1: Yellow soft

Layer 2: Dark red vinyl

Building 1320

ACM (%):

Chrysotile 3%

39 ft²

USDA Forest Service – Thomas Creek Work Center, Lakeview, OR 97630

12 May 2021

DH Environmental, Inc. | 1011 SW Klickitat Way, Suite 107 | Seattle, WA 98134

206.939.0886

Layer 4: Beige crumbly material

USFS-TCWC-ACM-08

Building 1320

ACM (%):

Same as sample

USFS-TCWC-ACM-07

USFS-TCWC-ACM-09

Layer 1: Brown rubbery material

Layer 2: Brown brittle

Building 1320 ACM (%): ND NA

USFS-TCWC-ACM-10

Layer 1: Yellow brittle

Building 1320

ACM (%):

425 ft²

USFS-TCWC-ACM-11

Layer 1: Tan soft mastic with debris

Building 1320

ACM (%):

Same as sample

USFS-TCWC-ACM-10

USFS-TCWC-ACM-12

Layer 1: Off-white vinyl

Building 1320

ACM (%):

Chrysotile 3% (Layer 2)

72 ft²

USFS-TCWC-ACM-13

Layer 2: Red vinyl tile

Building 1320

ACM (%):

252 ft²

USFS-TCWC-ACM-14

Layer 1: Multicolored woven fibrous material with beige and yellow

Building 1320 ACM (%): ND NA

USDA Forest Service – Thomas Creek Work Center, Lakeview, OR 97630

12 May 2021

DH Environmental, Inc. | 1011 SW Klickitat Way, Suite 107 | Seattle, WA 98134

206.939.0886

USFS-TCWC-ACM-15

Layer 1: White woven fibrous material with debris Building 1320 ACM (%): ND NA

USFS-TCWC-ACM-16

Layer 1: Brown woven yellow mastic

Building 1320

ACM (%):

Chrysotile 3% (Layer 2)

80 ft²

USFS-TCWC-ACM-17

Layer 1: Brown woven yellow mastic

Building 1320

ACM (%):

Chrysotile 3% (Layer 2)

Same as sample

USFS-TCWC-ACM-16

USFS-TCWC-ACM-18

Layer 1: Black asphaltic fibrous material Building 1320 ACM (%): ND NA

USFS-TCWC-ACM-19

Layer 1: Black asphaltic fibrous material Building 1320 ACM (%): ND NA

USFS-TCWC-ACM-20

Layer 1: Black asphaltic fibrous material Building 2200 ACM (%): ND NA

Table 1: ACM Sample Results ND: Not Detected at Reporting Limit

NA: Not Applicable ACM: Asbestos Containing Material

USDA Forest Service – Thomas Creek Work Center, Lakeview, OR 97630

12 May 2021

DH Environmental, Inc. | 1011 SW Klickitat Way, Suite 107 | Seattle, WA 98134

206.939.0886

4.0 LEAD BASED PAINT (LBP) ASSESSMENT

4.1 Applicable LBP Regulations

Oregon OSHA regulates exposure of workers in general industry (29 CFR 1910.1025) and construction workers (29

CFR 1926.62) to lead in the workplace. The regulations provide engineering controls and work practices to minimize worker exposures. These regulations are applicable to renovation/demolition activities that have the potential to expose workers to airborne concentrations of lead at or above the 8-hr time weighted average (TWA) action level of 30 micrograms per cubic meter (ug/m3) of air. Workers must not be exposed to lead at concentrations greater than the permissible exposure limit (PEL) of 50 ug/m3 for an 8-hr TWA. Employers are responsible for determining whether their employees will be exposed to lead. A negative exposure assessment is required, consisting of modeling or air monitoring to verify that workers are not being exposed above the action level. If an exposure assessment cannot be conducted for demolition activities, workers coming into contact with deteriorated paint and paint dust should wear a half-face respirator with a particulate cartridge, coveralls or similar full-body work clothing, gloves, safety glasses, and shoes or disposable shoe coverlets. If the negative exposure assessment reveals that workers are exposed to lead dust above the PEL, the requirements of 29 CFR

1926.62(d) in construction or 29 CFR 1910.1025(d) in general industry must be implemented, including training, air monitoring, and medical surveillance.

The USEPA regulates LBP activities in residential target housing (40 CFR 745, Subpart L). These regulations include both training and certification requirements for persons involved in LBP activities in target housing, as well as work practice standards for conducting LBP inspections, risk assessments, and abatement activities. The regulations under 40 CFR 745, Subpart L do not apply to LBP activities to be conducted on the subject property.

The USEPA and the State of Oregon requires generators of solid waste to determine whether their waste is a hazardous waste for proper accumulation, transportation, and disposal. For demolition debris-related waste that potentially contains lead or other heavy metals, a representative sample(s) of the debris must be analyzed by the

Toxicity Characteristic Leachate Procedure (TCLP) in accordance with 40 CFR Part 261. Solid wastes containing leachable lead detected at a concentration of 5 mg/L or greater must be accumulated, stored, transported, and disposed of as hazardous waste. Scrap metal that will be recycled is exempt from regulation as a Hazardous

Waste in accordance with 40 CFR 261.4(a)(13).

4.2 LBP Sampling Methodology

The testing of suspected lead painted surfaces was conducted by portable XRF lead-based paint analyzer. XRF instruments expose a building component to electromagnetic radiation in the form of X-rays or gamma radiation.

In response to radiation, each element, including lead, emits energy at a fixed and characteristic level. Emission of characteristic x-rays is called “X-Ray Fluorescence,” or XRF. The energy released is measured by the instrument’s fluorescence detector and displayed, all of the inconclusive ranges and/or thresholds are based on 1.0 mg/cm².

The lead-based paint inspection is in accordance with the methodologies set forth by the U.S. Department of

Housing and Urban Development (HUD), and manufacturer’s guidelines.

Locations of the areas tested are shown in Figure 1, 2, 3, and 4.

USDA Forest Service – Thomas Creek Work Center, Lakeview, OR 97630

12 May 2021

DH Environmental, Inc. | 1011 SW Klickitat Way, Suite 107 | Seattle, WA 98134

4.3 LBP Sampling Results

One-hundred thirteen (113) samples were collected and analyzed using an XRF. Five of the samples were found to contain lead above the established threshold of 1 mg/cm², these materials were found on the exterior of the crane. The table below represents the tests that were confirmed positive for lead concentrations exceeding the threshold of 1 mg/cm².

A complete list of test locations and findings can be found in Attachment 3.

Sample ID Space Name Component Substrate Color Concentration Notes

Reading # 12-16

Building 2022 Exterior Wall

Wood

Brown

Lead Concentration:

1.01 mg/cm²

Reading # 12-37

1.02 mg/cm²

Reading # 12-41

1.1 mg/cm²

Reading # 12-49

0.97 mg/cm²

Reading # 12-65

Exterior Roof Trim

White

1.04 mg/cm²

Table 2: LBP Sample Results mg/cm²: milligrams per Square Centimeter

LBP: Lead Based Paint

USDA Forest Service – Thomas Creek Work Center, Lakeview, OR 97630

12 May 2021

DH Environmental, Inc. | 1011 SW Klickitat Way, Suite 107 | Seattle, WA 98134

206.939.0886

5.0 OTHER HAZARDOUS BUILDING MATERIALS ASSESSMENT

A visual inspection was conducted to inventory other hazardous building materials. Other hazardous building materials assessed included misc. petroleum-based containers, batteries, mercury switch, propane cylinder, generator, gas powered lawn mower, home heating oil tank (quantity unknown), 1,000-gallon diesel tank

(residual), and large home propane tank (quantity unknown).

5.1 Universal Waste

Universal waste is a category of hazardous waste that allows all businesses to handle several common types of hazardous waste under simplified rules. Managing these materials as universal waste means that they are not counted toward your generator status or reported on your Hazardous Waste Report. In Oregon, the following categories of waste can be managed as universal waste:

▪ Batteries;

▪ Lights, lamps, light bulbs, and light tubes;

▪ Mercury-containing thermometers;

▪ Mercury-containing thermostats;

▪ Mercury-containing switches and relays;

▪ Pesticides.

If any of these materials are identified for disposal for the demolition or renovation project, the materials should be removed, packaged, and recycled as universal waste.

5.2 Refrigerant Gases

Section 608 of the Federal Clean Air Act prohibits individuals from intentionally venting refrigerants into the atmosphere while disposing of refrigeration/AC equipment. “De minimis” quantities of refrigerant released in the course of making good faith attempts to recapture and recycle or safely dispose of refrigerant are not subject to this prohibition (40 CFR 82.154[a][2]). To implement the venting prohibition, Section 608 specifies evacuation level requirements (40 CFR 82.156) and refrigerant recovery equipment requirements (40 CFR 82.158) for both small appliances and other refrigeration/AC equipment. When demolishing or renovating a structure, the following equipment should be assessed to determine the need for evacuation, recovery, or disposal by a licensed technician:

Small Appliances

A small appliance is defined as any appliance that is fully manufactured, charged, and hermetically sealed in a factory with five pounds or less of a CFC or HCFC refrigerant, including the following:

▪ Refrigerators and freezers (designed for home, commercial, or consumer use);

▪ Medical or industrial research refrigeration equipment;

▪ Room air conditioners (including window air conditioners and packaged terminal air heat pumps);

▪ Under-the-counter ice makers;

▪ Vending machines; and

▪ Drinking water coolers.

USDA Forest Service – Thomas Creek Work Center, Lakeview, OR 97630

12 May 2021

DH Environmental, Inc. | 1011 SW Klickitat Way, Suite 107 | Seattle, WA 98134

All Other Equipment

All other equipment refers to all appliances except for small appliances, motor vehicle air conditioners (MVACs), and MVAC-like appliances. Specifically, this equipment includes:

▪ Chillers;

▪ Industrial refrigeration equipment (not including research equipment);

▪ Refrigerant fire suppression systems;

▪ Commercial refrigeration equipment; and

▪ Cold storage equipment.

5.3 Fire Extinguishers

Dry chemical and liquid fire extinguishers may designate as hazardous waste if they are disposed of as solid waste.

Fire extinguishers should be removed from service prior to demolishing or renovating the area where the fire extinguishers are mounted or stored. If the fire extinguishers cannot be recycled or reused, they must be designated and disposed of accordingly.

5.4 Radioactive Exit Signs and Smoke Alarms

Many exit signs and smoke alarms contain low-level radioactive sources that should be managed in accordance with Nuclear Regulatory Commission Regulations. Accredited mail-in programs are available to recycle these materials. Radioactive exit signs and smoke alarms should be identified for removal and recycling or disposal prior to renovation or demolition of the building or affected area.

5.5 Summary of Other Hazardous Building Materials

This hazardous building materials assessment identified fluorescent light tubes, high intensity discharge lamps, refrigerant gases, mercury thermostats, propane tanks, and fire extinguishers that should be removed and reused, recycled, or disposed of prior to the renovation project. No radioactive exit signs or smoke alarms were identified.

Building 2506 - Other Hazardous Building Materials

Total

5 Gallon Oil Bucket Full – 5 Gallons

1 Gallon Gas Can ¼ Full

2-5 Gallon Lubricant Full – 10 Gallons

2-1 Quart Motor Oil Containers Residual

1 Used Oil Filter Empty

500 Gallon Elevated Gasoline Tank Empty

Building 2200 - Other Hazardous Building Materials

Total

Misc. Batteries 6-12

1 Large Propane Cylinder Unknown

1 Generator Unknown

Gas Powered Mower Unknown

USDA Forest Service – Thomas Creek Work Center, Lakeview, OR 97630

12 May 2021

DH Environmental, Inc. | 1011 SW Klickitat Way, Suite 107 | Seattle, WA 98134

206.939.0886

Building 1320 - Other Hazardous Building Materials

Total

Home Heating Oil Tank Unknown

Home Propane Tank Unknown

1 Hot Water Tank N/A

1 Refrigerator N/A

Oil Furnace Unknown

1 Mercury-Containing Thermostat 12 Grams

USDA Forest Service – Thomas Creek Work Center, Lakeview, OR 97630

12 May 2021

DH Environmental, Inc. | 1011 SW Klickitat Way, Suite 107 | Seattle, WA 98134

206.939.0886

6.0 CONCLUSIONS AND RECOMMENDATIONS

6.1 Asbestos Containing Materials

ACM was detected in the areas where the work was understood to be conducted. Therefore, we recommend that this work should be considered an “Asbestos Abatement Project” as defined in the DEQ Regulation OAR 340-248-

0010.

6.2 Lead-Based Paint

Lead was detected in some of the building materials sampled. Therefore, we recommend implementation of engineering and work practice controls to reduce and maintain employee exposure to lead to or below the permissible exposure limit1 to the extent that such controls are feasible in accordance with 29 CFR 1926.62(d) construction standards.

1 29 CFR 1926.62 (1): You must ensure that no employee is exposed to lead at concentrations greater than 50 micrograms per cubic meter of air (50 µg/m3) averaged over an 8-hour period.

USDA Forest Service – Thomas Creek Work Center, Lakeview, OR 97630

12 May 2021

DH Environmental, Inc. | 1011 SW Klickitat Way, Suite 107 | Seattle, WA 98134

206.939.0886

7.0 LIMITATIONS

This report presents the results of the hazardous building materials assessment conducted at the USDA Forest

Service Thomas Creek Work Center in Lakeview, OR. The assessment was conducted with the objective of identifying hazardous building materials in anticipation of demolition in accordance with certain regulations requiring such identification. For example, 40 CFR 763, along with DEQ OAR 340-248-0270, requires an “Asbestos

Survey” before the renovation or demolition of a building. In addition, the State of Oregon Hazardous Waste

Regulations (OAR 340) requires identification and designation of solid waste prior to disposal. This includes suspect lead-based paint and building materials.

Our assessment has considered risks pertaining to asbestos, lead in paint, universal waste, and other hazardous building materials discussed in Section 5 of this document. Our assessment is limited to only those locations and materials assessed. This assessment was not designed to identify all potential concerns or to eliminate all risks associated with renovation, demolition, construction, waste disposal, or transferring of property title. Evaluation of other risks not specifically described in the Scope of Work have not been included. For example, the following risks were not assessed: structural integrity, engineering loads, electrical, mechanical, radon gas, slope stability, building settlement, and evaluation of toxic and hazardous substances in, or in contact with, soil and groundwater. No warranty, expressed or implied, is made. DH Environmental has performed the services set forth in the Scope of Work in accordance with generally accepted practices in the same or similar localities, related to the nature of the work accomplished, at the time the services were performed.

The hazardous building materials assessment presented in this report represents the conditions and materials observed on the dates we conducted the sampling and visually inspected the building. This assessment report is intended for the exclusive use of the USDA Forest Service for specific application to the referenced property. This assessment does not replace or should be used in lieu of professionally developed construction or demolition plans, specifications, or bidding documents. This report is not a legal opinion.

Figure 1 Gas House – Lead Paint Assessment

Date: 05-12-2021

Lead-Based Paint Assessment

Sample Location Gas House

Figure 1

By: Brian Johnson Accredited WA State Lead Risk Assessor

Site Address: 42 °23’41.05” N, 120°36’18.98” W

Interior

Bare Metal

Sample ID: 12-2

Door

Sample ID: 12-1

Wall

Sample ID: 12-3

Wall

Sample ID: 12-4

Window

Sample ID: 12-5

Window

Sample ID: 12-6

Wall

Sample ID: 12-7

Roof Overhang

Sample ID: 12-9

Roof Flashing

Sample ID: 12-8

Roof Flashing

Sample ID: 12-10

Roof Overhang

Figure 2 Warehouse – Lead Paint Assessment

Asbestos & Lead-Based Paint Assessment

Sample Locations Warehouse

Exterior

Figure 2

Accredited WA State Lead Risk Assessor

Site Address: 42 °23’41.05” N, 120°36’18.98” W

Warehouse Storage Garage

Sample ID: 12-12

Wall Sample ID: 12-25

Door Jamb

Sample ID: 12-13

Wall

Sample ID: 12-11

Wall

Sample ID: 12-13

Wall

Sample ID: 12-16

Sample ID: 12-15

Sample ID: 12-20

Sample ID: 12-21

Window

Sample ID: 12-10

Roof Overhang

Bay Door

Sample ID: 12-17

Foundation

Sample ID: 12-18

Sample ID: 12-19

Wall

Sample ID: 12-22

Wall

Sample ID: 12-23

Wall

Sample ID: 12-24

Door Frame

Sample ID: 12-26

Exterior Door

Sample ID: 12-27

Loading Dock

Sample ID: 12-28

Bay Door

Sample ID: 12-29

Door Trim

Sample ID: 12-30

Roof Trim

Sample ID: 12-31

Roof Trim

Sample ID: ACM-20

Roofing Paper

Figure 3 Barracks Exterior - Lead Paint Assessment

Sample Locations:

Barracks Exterior

Figure 3

Accredited WA State Lead Risk Assessor

Site Address: 42 °23’41.05” N, 120°36’18.98” W

Sample ID: 12-44

Window

Sample ID: 12-42

Window

Sample ID: 12-32

White Roof Trim

Sample ID: 12-36

Window

Sample ID: 12-34

Wall

Sample ID: 12-64

Roof Trim

Sample ID: 12-63

Sample ID: 12-47

Sample ID: 12-48

Window

Sample ID: 12-43

Sample ID: 12-33

Sample ID: 12-35

Window

Sample ID: 12-37

Sample ID: 12-38

Porch Beam

Sample ID: 12-39

Door

Sample ID: 12-40

Overhang

Sample ID: 12-41

Wall

Sample ID: 12-45

Window

Sample ID: 12-46

Wall

Sample ID: 12-49

Wall

Sample ID: 12-52

Wall

Sample ID: 12-51

Window

Sample ID: 12-50

Window

Sample ID: 12-53

Wall

Sample ID: 12-54

Door

Sample ID: 12-55

Wall

Sample ID: 12-56

Wall

Sample ID: 12-58

Window

Sample ID: 12-57

Window

Sample ID: 12-59

Wall

Sample ID: 12-62

Wall

Sample ID: 12-61

Window

Sample ID: 12-60

Wall

Sample ID: 12-65

Roof Trim

Figure 4 Barracks Interior – Lead Paint Assessment

Sample Locations:

Interior

Figure 4

Accredited WA State Lead Risk Assessor

Site Address: 42 °23’41.05” N, 120°36’18.98” W

Sample ID: 12-92

Sample ID: 12-109

Pantry Wall

Sample ID: 12-104

Corkboard

Sample ID: 12-110

Pantry Ceiling

Sample ID: 12-108

Ceiling

Sample ID: 12-91

Sample ID: 12-93

Ceiling

Sample ID: 12-107

Sample ID: 12-105

Ceiling

Sample ID: 12-101

Door

Sample ID: 12-100

Wall

Sample ID: 12-103

Wall

Sample ID: 12-97

Wall Sample ID: 12-90

Wall

Sample ID: 12-83

Door Jamb

Sample ID: 12-75 & 12-76

Window Frame & Trim

Sample ID: 12-71

Wall

Sample ID: 12-69

Wall

Sample ID: 12-68

Wall

Sample ID: 12-72

Ceiling

Sample ID: 12-82

Wall Sample ID: 12-78

Wall

Sample ID: 12-73 & 12-74

Window and Frame

Sample ID: 12-111

Wall

Sample ID: 12-112

Wall

Sample ID: 12-113

Wall

Sample ID: 12-106

Wall

Sample ID: 12-70

Wall

Sample ID: 12-77

Wall

Sample ID: 12-79 & 12-80

Window & Trim

Sample ID: 12-81

Sample ID: 12-84

Wall Sample ID: 85

Ceiling

Sample ID: 12-86

Wall

Sample ID: 12-87

Wall

Sample ID: 12-88 & 12-89

Window & Trim

Sample ID: 12-94

Wall Sample ID: 12-95

Wall Sample ID: 12-96

Wall

Sample ID: 12-98 & 12-99

Window & Trim

Sample ID: 12-102

Figure 5 Barracks Interior & Exterior – Asbestos Assessment

Asbestos Assessment

Sample Locations

Interior/Exterior

Figure 5

Accredited WA State Lead Risk Assessor

Site Address: 42 °23’41.05” N, 120°36’18.98” W

Sample ID: ACM-02

White Kitchen Tile

Sample ID: ACM-01

Insulation

Sample ID: ACM-04

White Entry Way Tile

Sample ID: ACM-05

Green Tile

Sample ID: ACM-17

Carpet & Mastic

Sample ID: ACM-11

Red Tile Under Carpet

Sample ID: ACM-09

Base Coving

Sample ID: ACM-16

Carpet & Mastic

Sample ID: ACM-15

Stove Cord

Sample ID: ACM-10

Red Tile Under Carpet

Sample ID: ACM-13

Green Tile Under Carpet

Sample ID: ACM-08

Red Tile Under Carpet Sample ID: ACM-07

Red Tile Under Carpet

Sample ID: ACM-06

Mastic & Green Tile

Sample ID: ACM-03

Base Coving Sample ID: ACM-12

White Tile

Sample ID: ACM-14

Carpet & Mastic

Sample ID: ACM-18

Roofing Paper

Sample ID: ACM-19

Roofing Paper

Attachment 1 Site Photos

Sample ID: USFS-TCWC-ACM-01

Sample ID: USFS-TCWC-ACM-02

Sample ID: USFS-TCWC-ACM-03

Sample ID: USFS-TCWC-ACM-04

Sample ID: USFS-TCWC-ACM-05

Sample ID: USFS-TCWC-ACM-06

Sample ID: USFS-TCWC-ACM-07

Sample ID: USFS-TCWC-ACM-08

Sample ID: USFS-TCWC-ACM-09

Sample ID: USFS-TCWC-ACM-10

Sample ID: USFS-TCWC-ACM-11

Sample ID: USFS-TCWC-ACM-12

Sample ID: USFS-TCWC-ACM-13

Sample ID: USFS-TCWC-ACM-14

Sample ID: USFS-TCWC-ACM-15

Sample ID: USFS-TCWC-ACM-16

Sample ID: USFS-TCWC-ACM-17

Sample ID: USFS-TCWC-ACM-18

Sample ID: USFS-TCWC-ACM-19

Sample ID: USFS-TCWC-ACM-20

Gas House: Misc. Petroluem Products

Elevated Empty Gasoline Tank

Warehouse: Propane Cylinder

Warehouse: Generator

Warehouse: Lawn Mower

Outside: Diesel Tank

Outside: Propane Tank

Barracks: Oil Furnace

Attachment 2 Laboratory Analytical Reports

Nick Ly, Technical Director

Client Project: Thomas Creek Work Center Location: Lakeview, OR

Dear Mr. Johnson, Enclosed please find test results for the 20 sample(s) submitted to our laboratory for analysis on 5/14/2021.

Examination of these samples was conducted for the presence of identifiable asbestos fibers using polarized light microscopy (PLM) with dispersion staining in accordance with U. S. EPA 40 CFR Appendix E to Subpart E of Part 763, Interim Method for the Determination of Asbestos in Bulk Insulation Samples and EPA 600/R-93/116, Method for the Determination of Asbestos in Bulk Building Materials.

For samples containing more than one separable layer of materials, the report will include findings for each layer (labeled Layer 1 and Layer 2, etc. for each individual layer). The asbestos concentration in the sample is determined by calibrated visual estimation.

For those samples with asbestos concentrations between 1 and 10 percent based on visual estimation, the EPA recommends a procedure known as point counting (NESHAPS, 40 CFR Part 61). Point counting is a statistically more accurate means of quantification for samples with low concentrations of asbestos.

The detection limit for the calibrated visual estimation is <1%, 400 point counts is 0.25% and 1000 point counts is 0.1%

Samples are archived for two weeks following analysis. Samples that are not retrieved by the client are discarded after two weeks.

Thank you for using our laboratory services. Please do not hesitate to call if there is anything further we can assist you with.

Sincerely, Enc.: Sample Results

May 24, 2021

Brian Johnson DH Environmental 1011 SW Klickitat Way Suite 107 Seattle, WA 98134

RE: Bulk Asbestos Fiber Analysis; NVL Batch # 2108813.00

< Client:

Address:

Attention: Mr. Brian Johnson Lakeview, OR

Client Project #: Thomas Creek Work Center

Samples Received: 20

By Polarized Light Microscopy Bulk Asbestos Fibers Analysis

DH Environmental 1011 SW Klickitat Way Suite 107 Seattle, WA 98134

Method: EPA/600/R-93/116 Samples Analyzed: 20

Project Location:

Batch #: 2108813.00

Date Received: 5/14/2021

21060178Lab ID: Client Sample #:

Location: Lakeview, OR

USFS-TCWC-ACM-01

Layer 1 of 2 Description: Brown crumbly fibrous material with black asphaltic mastic Non-Fibrous Materials: Other Fibrous Materials:% Asbestos Type: %

Binder/Filler, Asphalt/Binder, Fine particles 73%Cellulose None Detected ND Layer 2 of 2 Description: Yellow fluffy fibrous material with debris

Non-Fibrous Materials: Other Fibrous Materials:% Asbestos Type: % Binder/Filler, Glass debris, Fine particles 94%Glass fibers None Detected ND

Debris

21060179Lab ID: Client Sample #:

Location: Lakeview, OR

USFS-TCWC-ACM-02

Layer 1 of 2 Description: Off-white vinyl tile with debris Non-Fibrous Materials: Other Fibrous Materials:% Asbestos Type: %

Vinyl/Binder, Fine grains, Fine particles NDNone Detected None Detected ND

Debris Layer 2 of 2 Description: Black asphaltic mastic with debris

Non-Fibrous Materials: Other Fibrous Materials:% Asbestos Type: % Asphalt/Binder, Fine particles, Debris <1%Cellulose Chrysotile 3%

21060180Lab ID: Client Sample #:

Location: Lakeview, OR

USFS-TCWC-ACM-03

Layer 1 of 3 Description: Brown rubbery material with debris Non-Fibrous Materials: Other Fibrous Materials:% Asbestos Type: %

Vinyl/Binder, Fine particles, Debris NDNone Detected None Detected ND

Note: If samples are not homogeneous, then subsamples of the components were analyzed separately. All bulk samples are analyzed using both EPA 600/R-93/116 and 600/M4-82-020 Methods with the following measurement uncertainties for the reported % Asbestos (1%=0-3%, 5%=1-9%, 10%=5-15%, 20%=10-30%, 50%=40-60%). This report relates only to the items tested. If sample was not collected by NVL personnel, then the accuracy of the results is limited by the methodology and acuity of the sample collector. This report shall not be reproduced except in full, without written approval of NVL Laboratories, Inc. It shall not be used to claim product endorsement by NVLAP or any other agency of the US Government

Client Hilary CrumleyAnalyzed by:

Nick LyReviewed by:

05/21/2021 Date:

05/24/2021Date:

Sampled by:

Nick Ly, Technical Director

ASB-02

Attention: Mr. Brian Johnson Lakeview, OR

Client Project #: Thomas Creek Work Center

Samples Received: 20

By Polarized Light Microscopy Bulk Asbestos Fibers Analysis

DH Environmental 1011 SW Klickitat Way Suite 107 Seattle, WA 98134

Method: EPA/600/R-93/116 Samples Analyzed: 20

Project Location:

Batch #: 2108813.00

Date Received: 5/14/2021

Layer 2 of 3 Description: Brown brittle mastic Non-Fibrous Materials: Other Fibrous Materials:% Asbestos Type: %

Mastic/Binder, Fine particles NDNone Detected None Detected ND Layer 3 of 3 Description: Tan brittle mastic with paint

Non-Fibrous Materials: Other Fibrous Materials:% Asbestos Type: % Mastic/Binder, Fine particles, Paint NDNone Detected None Detected ND

21060181Lab ID: Client Sample #:

Location: Lakeview, OR

USFS-TCWC-ACM-04

Layer 1 of 2 Description: Beige vinyl tile Non-Fibrous Materials: Other Fibrous Materials:% Asbestos Type: %

Vinyl/Binder, Fine grains, Fine particles NDNone Detected None Detected ND Layer 2 of 2 Description: Black asphaltic mastic

Non-Fibrous Materials: Other Fibrous Materials:% Asbestos Type: % Asphalt/Binder, Fine particles NDNone Detected Chrysotile 2%

21060182Lab ID: Client Sample #:

Location: Lakeview, OR

USFS-TCWC-ACM-05

Layer 1 of 2 Description: Dark green vinyl tile Non-Fibrous Materials: Other Fibrous Materials:% Asbestos Type: %

Vinyl/Binder, Fine grains, Fine particles NDNone Detected Chrysotile 7%

Glass debris Layer 2 of 2 Description: Black asphaltic mastic with debris

Non-Fibrous Materials: Other Fibrous Materials:% Asbestos Type: % Asphalt/Binder, Fine particles, Debris <1%Cellulose Chrysotile 3%

21060183Lab ID: Client Sample #:

Location: Lakeview, OR

USFS-TCWC-ACM-06

Note: If samples are not homogeneous, then subsamples of the components were analyzed separately. All bulk samples are analyzed using both EPA 600/R-93/116 and 600/M4-82-020 Methods with the following measurement uncertainties for the reported % Asbestos (1%=0-3%, 5%=1-9%, 10%=5-15%, 20%=10-30%, 50%=40-60%). This report relates only to the items tested. If sample was not collected by NVL personnel, then the accuracy of the results is limited by the methodology and acuity of the sample collector. This report shall not be reproduced except in full, without written approval of NVL Laboratories, Inc. It shall not be used to claim product endorsement by NVLAP or any other agency of the US Government

Client Hilary CrumleyAnalyzed by:

Nick LyReviewed by:

05/21/2021 Date:

05/24/2021Date:

Sampled by:

Nick Ly, Technical Director

Attention: Mr. Brian Johnson Lakeview, OR

Client Project #: Thomas Creek Work Center

Samples Received: 20

By Polarized Light Microscopy Bulk Asbestos Fibers Analysis

DH Environmental 1011 SW Klickitat Way Suite 107 Seattle, WA 98134

Method: EPA/600/R-93/116 Samples Analyzed: 20

Project Location:

Batch #: 2108813.00

Date Received: 5/14/2021

Layer 1 of 3 Description: Tan soft mastic with debris Non-Fibrous Materials: Other Fibrous Materials:% Asbestos Type: %

Mastic/Binder, Fine particles, Debris 3%Synthetic fibers None Detected ND Layer 2 of 3 Description: Dark green vinyl tile

Non-Fibrous Materials: Other Fibrous Materials:% Asbestos Type: % Vinyl/Binder, Fine grains, Fine particles NDNone Detected Chrysotile 6%

Glass debris Layer 3 of 3 Description: Black asphaltic mastic

Non-Fibrous Materials: Other Fibrous Materials:% Asbestos Type: % Asphalt/Binder, Fine particles NDNone Detected Chrysotile 4%

21060184Lab ID: Client Sample #:

Location: Lakeview, OR

USFS-TCWC-ACM-07

Layer 1 of 4 Description: Yellow soft mastic with debris Non-Fibrous Materials: Other Fibrous Materials:% Asbestos Type: %

Mastic/Binder, Fine particles, Debris 1%Synthetic fibers None Detected ND Layer 2 of 4 Description: Dark red vinyl tile

Non-Fibrous Materials: Other Fibrous Materials:% Asbestos Type: % Vinyl/Binder, Fine grains, Fine particles NDNone Detected Chrysotile 7%

Glass debris Layer 3 of 4 Description: Black asphaltic mastic

Non-Fibrous Materials: Other Fibrous Materials:% Asbestos Type: % Asphalt/Binder, Fine particles NDNone Detected Chrysotile 3%

Layer 4 of 4 Description: Beige crumbly material Non-Fibrous Materials: Other Fibrous Materials:% Asbestos Type: %

Binder/Filler, Fine grains, Fine particles <1%Cellulose None Detected ND

Note: If samples are not homogeneous, then subsamples of the components were analyzed separately. All bulk samples are analyzed using both EPA 600/R-93/116 and 600/M4-82-020 Methods with the following measurement uncertainties for the reported % Asbestos (1%=0-3%, 5%=1-9%, 10%=5-15%, 20%=10-30%, 50%=40-60%). This report relates only to the items tested. If sample was not collected by NVL personnel, then the accuracy of the results is limited by the methodology and acuity of the sample collector. This report shall not be reproduced except in full, without written approval of NVL Laboratories, Inc. It shall not be used to claim product endorsement by NVLAP or any other agency of the US Government

Client Hilary CrumleyAnalyzed by:

Nick LyReviewed by:

05/21/2021 Date:

05/24/2021Date:

Sampled by:

Nick Ly, Technical Director

Attention: Mr. Brian Johnson Lakeview, OR

Client Project #: Thomas Creek Work Center

Samples Received: 20

By Polarized Light Microscopy Bulk Asbestos Fibers Analysis

DH Environmental 1011 SW Klickitat Way Suite 107 Seattle, WA 98134

Method: EPA/600/R-93/116 Samples Analyzed: 20

Project Location:

Batch #: 2108813.00

Date Received: 5/14/2021

21060185Lab ID: Client Sample #:

Location: Lakeview, OR

USFS-TCWC-ACM-08

Layer 1 of 3 Description: Yellow soft mastic with debris Non-Fibrous Materials: Other Fibrous Materials:% Asbestos Type: %

Mastic/Binder, Fine particles, Debris 1%Synthetic fibers None Detected ND Layer 2 of 3 Description: Dark red vinyl tile

Non-Fibrous Materials: Other Fibrous Materials:% Asbestos Type: % Vinyl/Binder, Fine grains, Fine particles NDNone Detected Chrysotile 7%

Glass debris Layer 3 of 3 Description: Black asphaltic mastic

Non-Fibrous Materials: Other Fibrous Materials:% Asbestos Type: % Asphalt/Binder, Fine particles <1%Cellulose Chrysotile 4%

21060186Lab ID: Client Sample #:

Location: Lakeview, OR

USFS-TCWC-ACM-09

Layer 1 of 2 Description: Brown rubbery material Non-Fibrous Materials: Other Fibrous Materials:% Asbestos Type: %

Vinyl/Binder, Fine particles NDNone Detected None Detected ND Layer 2 of 2 Description: Brown brittle mastic

Non-Fibrous Materials: Other Fibrous Materials:% Asbestos Type: % Mastic/Binder, Fine particles <1%Cellulose None Detected ND

21060187Lab ID: Client Sample #:

Location: Lakeview, OR

USFS-TCWC-ACM-10

Layer 1 of 3 Description: Yellow brittle mastic with debris Non-Fibrous Materials: Other Fibrous Materials:% Asbestos Type: %

Mastic/Binder, Fine particles, Debris 1%Synthetic fibers None Detected ND

Note: If samples are not homogeneous, then subsamples of the components were analyzed separately. All bulk samples are analyzed using both EPA 600/R-93/116 and 600/M4-82-020 Methods with the following measurement uncertainties for the reported % Asbestos (1%=0-3%, 5%=1-9%, 10%=5-15%, 20%=10-30%, 50%=40-60%). This report relates only to the items tested. If sample was not collected by NVL personnel, then the accuracy of the results is limited by the methodology and acuity of the sample collector. This report shall not be reproduced except in full, without written approval of NVL Laboratories, Inc. It shall not be used to claim product endorsement by NVLAP or any other agency of the US Government

Client Hilary CrumleyAnalyzed by:

Nick LyReviewed by:

05/21/2021 Date:

05/24/2021Date:

Sampled by:

Nick Ly, Technical Director

Attention: Mr. Brian Johnson Lakeview, OR

Client Project #: Thomas Creek Work Center

Samples Received: 20

By Polarized Light Microscopy Bulk Asbestos Fibers Analysis

DH Environmental 1011 SW Klickitat Way Suite 107 Seattle, WA 98134

Method: EPA/600/R-93/116 Samples Analyzed: 20

Project Location:

Batch #: 2108813.00

Date Received: 5/14/2021

<1%Cellulose Layer 2 of 3 Description: Dark red vinyl tile

Non-Fibrous Materials: Other Fibrous Materials:% Asbestos Type: % Vinyl/Binder, Fine grains, Fine particles NDNone Detected Chrysotile 7%

Layer 3 of 3 Description: Black asphaltic mastic Non-Fibrous Materials: Other Fibrous Materials:% Asbestos Type: %

Asphalt/Binder, Fine particles NDNone Detected Chrysotile 4%

21060188Lab ID: Client Sample #:

Location: Lakeview, OR

USFS-TCWC-ACM-11

Layer 1 of 3 Description: Tan soft mastic with debris Non-Fibrous Materials: Other Fibrous Materials:% Asbestos Type: %

Mastic/Binder, Fine particles, Debris 2%Synthetic fibers None Detected ND

<1%Cellulose Layer 2 of 3 Description: Dark red vinyl tile

Non-Fibrous Materials: Other Fibrous Materials:% Asbestos Type: % Vinyl/Binder, Fine grains, Fine particles NDNone Detected Chrysotile 7%

Layer 3 of 3 Description: Black asphaltic mastic Non-Fibrous Materials: Other Fibrous Materials:% Asbestos Type: %

Asphalt/Binder, Fine particles NDNone Detected Chrysotile 4%

21060189Lab ID: Client Sample #:

Location: Lakeview, OR

USFS-TCWC-ACM-12

Layer 1 of 2 Description: Off-white vinyl tile Non-Fibrous Materials: Other Fibrous Materials:% Asbestos Type: %

Vinyl/Binder, Fine grains, Fine particles NDNone Detected None Detected ND

Note: If samples are not homogeneous, then subsamples of the components were analyzed separately. All bulk samples are analyzed using both EPA 600/R-93/116 and 600/M4-82-020 Methods with the following measurement uncertainties for the reported % Asbestos (1%=0-3%, 5%=1-9%, 10%=5-15%, 20%=10-30%, 50%=40-60%). This report relates only to the items tested. If sample was not collected by NVL personnel, then the accuracy of the results is limited by the methodology and acuity of the sample collector. This report shall not be reproduced except in full, without written approval of NVL Laboratories, Inc. It shall not be used to claim product endorsement by NVLAP or any other agency of the US Government

Client Hilary CrumleyAnalyzed by:

Nick LyReviewed by:

05/21/2021 Date:

05/24/2021Date:

Sampled by:

Nick Ly, Technical Director

Attention: Mr. Brian Johnson Lakeview, OR

Client Project #: Thomas Creek Work Center

Samples Received: 20

By Polarized Light Microscopy Bulk Asbestos Fibers Analysis

DH Environmental 1011 SW Klickitat Way Suite 107 Seattle, WA 98134

Method: EPA/600/R-93/116 Samples Analyzed: 20

Project Location:

Batch #: 2108813.00

Date Received: 5/14/2021

Layer 2 of 2 Description: Black asphaltic mastic Non-Fibrous Materials: Other Fibrous Materials:% Asbestos Type: %

Asphalt/Binder, Fine particles NDNone Detected Chrysotile 3%

21060190Lab ID: Client Sample #:

Location: Lakeview, OR

USFS-TCWC-ACM-13

Layer 1 of 3 Description: Yellow soft mastic with debris Non-Fibrous Materials: Other Fibrous Materials:% Asbestos Type: %

Mastic/Binder, Fine particles, Debris 1%Synthetic fibers None Detected ND Layer 2 of 3 Description: Red vinyl tile

Non-Fibrous Materials: Other Fibrous Materials:% Asbestos Type: % Vinyl/Binder, Fine grains, Fine particles NDNone Detected Chrysotile 7%

Layer 3 of 3 Description: Black asphaltic mastic Non-Fibrous Materials: Other Fibrous Materials:% Asbestos Type: %

Asphalt/Binder, Fine particles <1%Cellulose Chrysotile 4%

21060191Lab ID: Client Sample #:

Location: Lakeview, OR

USFS-TCWC-ACM-14

Layer 1 of 1 Description: Multicolored woven fibrous material with beige and yellow mastic Non-Fibrous Materials: Other Fibrous Materials:% Asbestos Type: %

Binder/Filler, Mastic/Binder, Fine particles 73%Synthetic fibers None Detected ND

21060192Lab ID: Client Sample #:

Location: Lakeview, OR

USFS-TCWC-ACM-15

Layer 1 of 1 Description: White woven fibrous material with debris Non-Fibrous Materials: Other Fibrous Materials:% Asbestos Type: %

Binder/Filler, Fine particles, Debris 96%Glass fibers None Detected ND

Note: If samples are not homogeneous, then subsamples of the components were analyzed separately. All bulk samples are analyzed using both EPA 600/R-93/116 and 600/M4-82-020 Methods with the following measurement uncertainties for the reported % Asbestos (1%=0-3%, 5%=1-9%, 10%=5-15%, 20%=10-30%, 50%=40-60%). This report relates only to the items tested. If sample was not collected by NVL personnel, then the accuracy of the results is limited by the methodology and acuity of the sample collector. This report shall not be reproduced except in full, without written approval of NVL Laboratories, Inc. It shall not be used to claim product endorsement by NVLAP or any other agency of the US Government

Client Hilary CrumleyAnalyzed by:

Nick LyReviewed by:

05/21/2021 Date:

05/24/2021Date:

Sampled by:

Nick Ly, Technical Director

Attention: Mr. Brian Johnson Lakeview, OR

Client Project #: Thomas Creek Work Center

Samples Received: 20

By Polarized Light Microscopy Bulk Asbestos Fibers Analysis

DH Environmental 1011 SW Klickitat Way Suite 107 Seattle, WA 98134

Method: EPA/600/R-93/116 Samples Analyzed: 20

Project Location:

Batch #: 2108813.00

Date Received: 5/14/2021

21060193Lab ID: Client Sample #:

Location: Lakeview, OR

USFS-TCWC-ACM-16

Layer 1 of 2 Description: Brown woven fibrous material with yellow mastic Non-Fibrous Materials: Other Fibrous Materials:% Asbestos Type: %

Binder/Filler,…