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BLD2023-0308+Asbestos Survey+5.23.2023_10.44.35_AM+35633729309 Bowdoin Way Edmonds, WA 98020 04 May 2023 Prepared for: City of Edmonds 700 Frances Anderson Center Edmonds, WA 98020 ""5 Environmental 9 Prepared by: Professional Services Contract Project Number: C578.re DH Environmental, Inc. 1011 SW Klickitat Way, Suite 107 Seattle, WA 98134 Hazardous Building Materials Assessment City of Edmonds — 9309 Bowdoin Way, Edmonds, WA 98020 EXECUTIVE SUMMARY The City of Edmonds retained DH Environmental, Inc. (DH Environmental) to conduct a hazardous building materials assessment for the building located at 9309 Bowdoin Way in Edmonds, WA. DH Environmental provided one AHERA accredited building inspector to conduct the assessment on May 4th, 2023. The scope of the services included assessing the building for hazardous building materials in anticipation of the forthcoming renovation. DH Environmental assessed the building for the following hazardous building materials: ■ Asbestos -containing materials (ACM); ■ Lead -based paints (LBP) ■ Polychlorinated Biphenyls (PCBs) ■ Other hazardous building materials (household hazardous waste and refrigerant gases) Nineteen (19) bulk samples of suspect asbestos -containing materials were collected and analyzed using polarized light microscopy (PLM). Five (5) of the samples were found to contain asbestos greater than 1%. Building materials that contain greater than 1% asbestos are considered "Asbestos Containing Materials" by regulatory definition. Ninety-two (92) locations in the building were analyzed using an X-ray fluorescence analyzer (XRF). Thirty-five (35) of the locations were found to contain lead above the Federal lead -based paint concentration criteria of 1 mg/cm'. Other hazardous materials such as household hazardous waste, one refrigerator and one freezer were identified during the inspection and are inventoried in the report. One sample of suspected PCB containing paint were collected and analyzed for PCBs by EPA Method 8082. The sample was below the regulatory limit of 50 mg/kg for PCBs. 10 May 2023 DH Environmental, Inc. 1 1011 SW Klickitat Way, Suite 107 1 Seattle, WA 98134 Hazardous Building Materials Assessment City of Edmonds — 9309 Bowdoin Way, Edmonds, WA 98020 PROJECT INFORMATION Project Title 9309 Bowdoin Way, Edmonds, WA Hazardous Building Materials Assessment Assessment Conducted by DH Environmental, Inc. 1011 SW Klickitat Way, Suite 107 Seattle, WA 98134 Project Owner City of Edmonds Contract Vehicle City of Edmonds Professional Services Contract Project Number: C578.re Owner's Representative Kyle Woods Planner & Capital Project Manager Assessment Personnel Brian Johnson, OHST, CET AHERA Accredited Building Inspector Certified Lead Risk Assessor Travis Forslund, CHIMP, CES AHERA Accredited Building Inspector Survey Date(s) 04 May 2023 Report Delivery Date 11 May 2023 Report Prepared by Brian Johnson, OHST, CET AHERA Accredited Building Inspector Certified Lead Risk Assessor EHS Program Manager Report Reviewed by 'rfONAL Expires 12/01/2023 David Hill, PE, CHMM Principal DH Environmental, Inc. 10 May 2023 DH Environmental, Inc. 1 1011 SW Klickitat Way, Suite 107 1 Seattle, WA 98134 Hazardous Building Materials Assessment City of Edmonds — 9309 Bowdoin Way, Edmonds, WA 98020 Table of Contents EXECUTIVE SUMMARY......................................................................................................................1 PROJECT INFORMATION....................................................................................................................2 1.0 INTRODUCTION......................................................................................................................5 1.1 Scope of Services....................................................................................................................................................5 1.2 Assessment Objective............................................................................................................................................5 2.0 SITE DESCRIPTION...................................................................................................................6 3.0 ASBESTOS CONTAINING MATERIALS ASSESSMENT..................................................................7 3.1 Applicable ACM Regulations..................................................................................................................................7 3.2 Sampling Methodology..........................................................................................................................................7 3.3 Sampling Results....................................................................................................................................................8 4.0 LEAD BASED PAINT (LBP) ASSESSMENT.................................................................................10 4.1 Applicable LBP Regulations..................................................................................................................................10 4.2 LBP Sampling Methodology..................................................................................................................................10 4.3 LBP Sampling Results...........................................................................................................................................11 5.0 POLYCHLORINATED BIPHENYLS (PCBS) ASSESSMENT.............................................................13 5.1 Applicable PCB Regulations..................................................................................................................................13 5.2 PCB Sampling Methodology / Findings.................................................................................................................13 5.3 PCB Sampling Results...........................................................................................................................................14 6.0 OTHER HAZARDOUS BUILDING MATERIALS ASSESSMENT......................................................15 6.1 Universal Waste...................................................................................................................................................15 6.2 Refrigerant Gases.................................................................................................................................................15 10 May 2023 DH Environmental, Inc. 1 1011 SW Klickitat Way, Suite 107 1 Seattle, WA 98134 Hazardous Building Materials Assessment City of Edmonds — 9309 Bowdoin Way, Edmonds, WA 98020 6.3 Fire Extinguishers.................................................................................................................................................16 6.4 Radioactive Exit Signs and Smoke Alarms.............................................................................................................16 6.5 Summary of Other Hazardous Building Materials.................................................................................................16 7.0 CONCLUSIONS AND RECOMMENDATIONS............................................................................17 7.1 Asbestos Containing Materials.............................................................................................................................17 7.2 Lead Based Paint..................................................................................................................................................17 7.3 Polychlorinated Biphenyls....................................................................................................................................17 7.3 Other Hazardous Building Materials.....................................................................................................................17 8.0 LIMITATIONS.......................................................................................................................18 List of Figures Figure 1 Home Interior Asbestos & Lead Paint Assessment Sample Locations Figure 2 Home Exterior Asbestos & Lead Paint Assessment Sample Locations Figure 3 Home Basement Lead Paint Assessment Sample Locations Figure 4 Outbuilding Asbestos & Lead Paint Assessment Sample Locations List of Attachments Attachment 1 Site Photos Attachment 2 Laboratory Analytical Reports Attachment 3 XRF Data Attachment 4 Laboratory Certifications Attachment 5 Inspector Certifications 10 May 2023 DH Environmental, Inc. 1 1011 SW Klickitat Way, Suite 107 1 Seattle, WA 98134 206.939.0886 Hazardous Building Materials Assessment City of Edmonds — 9309 Bowdoin Way, Edmonds, WA 98020 1.0 INTRODUCTION The City of Edmonds retained DH Environmental, Inc. (DH Environmental) to conduct a hazardous building materials assessment of the building located at 9309 Bowdoin Way in Edmonds, WA. DH Environmental provided two AHERA accredited building inspectors to conduct the assessment on May 4th, 2023. 1.1 Scope of Services The scope of the services included assessing parts of the home and outbuilding for hazardous building materials in anticipation of a forthcoming demolition in accordance with 40 CFR 763, Puget Sound Clean Air Agency Regulation III, Article 4.02(a), and the Washington State Dangerous Waste Regulations (WAC 173-303). DH Environmental assessed the building for the following hazardous building materials: ■ Asbestos -containing materials (ACM) ■ Lead -based paints (LBP) ■ Polychlorinated Biphenyls (PCBs) ■ Other hazardous building materials: • refrigerant gases (CFCs) • household hazardous waste 1.2 Assessment Objective The objective of this hazardous building materials assessment is to assist the City of Edmonds 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 Puget Sound Clean Air Agency (PSCAA) and a good faith inspection as required by Washington State Department of Labor and Industries' Division of Occupational Safety and Health (DOSH) 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. 10 May 2023 DH Environmental, Inc. 1 1011 SW Klickitat Way, Suite 107 1 Seattle, WA 98134 Hazardous Building Materials Assessment City of Edmonds — 9309 Bowdoin Way, Edmonds, WA 98020 2.0 SITE DESCRIPTION The home located at 9309 Bowdoin Way in Edmonds, WA was built in 1925 and is approximately 1,158 sq ft. In addition to the home the property also has an outbuilding that is approximately 1,000 sq ft. 10 May 2023 DH Environmental, Inc. 1 1011 SW Klickitat Way, Suite 107 1 Seattle, WA 98134 Hazardous Building Materials Assessment City of Edmonds — 9309 Bowdoin Way, Edmonds, WA 98020 3.0 ASBESTOS CONTAINING MATERIALS ASSESSMENT 3.1 Applicable ACM Regulations The Washington State Department of Labor and Industries' Division of Occupational Safety and Health (DOSH) and the Puget Sound Clean Air Agency regulate building materials that contain more than 1 percent asbestos as ACM for protection of human health and the environment. DOSH regulates worker exposure to airborne asbestos fibers during general work activities and construction and demolition activities (WAC 296-62-077). 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. DOSH regulations establish engineering controls and work practices that are designed to mitigate workers exposure to asbestos in the workplace. The Puget Sound Clean Air Agency (PSCAA) regulates the release of airborne asbestos fibers in King County and surrounding areas. Specifically, PSCAA under Article IV, Regulation III regulates emissions of asbestos during building renovation and demolition projects. This regulation requires that an asbestos survey be conducted prior to demolition, that PSCAA 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. DOSH has analogous training requirements for abatement workers in WAC 296-65. The EPA and DOSH 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 Puget Sound Clean Air Agency Guidance Document 66-149, Asbestos Survey Guidance Rev. 2., as well as related AHERA Protocols. A site walk was conducted with the Owner's Project Engineer prior to conducting the assessment. 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 material components (e.g., insulation that was found behind the walls). Where appropriate, suspect ACM was grouped as homogenous if the materials were similar in appearance. 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). 10 May 2023 DH Environmental, Inc. 1 1011 SW Klickitat Way, Suite 107 1 Seattle, WA 98134 Hazardous Building Materials Assessment City of Edmonds — 9309 Bowdoin Way, Edmonds, WA 98020 • 3.3 Sampling Results Nineteen (19) bulk samples of suspect asbestos -containing materials were collected and analyzed using polarized light microscopy (PLM). Five (5) of the samples were found to contain asbestos greater than 1%. Building materials that contain greater than 1% asbestos are considered "Asbestos Containing Materials" by regulatory definition. Sample ID Material Description Sample Concentration Material Quantity Location Estimate (if applicable) Layer 1: Tan fibrous material with 9309-ACM-01 trace black asphaltic mastic Interior ACM (%): ND NA Layer 2: Loose white sandy material with wood debris 9309-ACM-02 Layer 1: Tan brittle material with Interior ACM (%): ND NA thin black surface Layer 1: Thin white compacted powdery material with paint 9309-ACM-03 Layer 2: Tan crumbly material Interior ACM (%): ND NA Layer 3: Gray brittle material with brown crumbly coating and debris Layer 1: Thin tan crumbly material with layered paint 9309-ACM-04 Layer 2: White crumbly/sandy Interior o ACM (/): ND NA material Layer 3: Off-white sandy material Layer 4: Thin gray brittle material Layer 1: Loose dark brown 9309-ACM-05 crumbly material with wood Interior ACM (%): ND NA debris Layer 1: Layer 1: Trace off-white crumbly material with layered paint 9309-ACM-06 Layer 2: Thin white compacted Interior ACM (%): ND NA powdery material Layer 3: Thin white chalky material with paper with wood debris Layer 1: Light brown vinyl tile ACM (%): ND Approximately 9309-ACM-07 Layer 2: Trace black soft mastic Interior Layer 1 230 square feet o 7/o Chrysotile Layer 1: Brown flat hard compressed fibrous material with 9309-ACM-08 red surface Interior ACM (%): ND NA Layer 2: Thin black asphaltic mastic with debris Layer 1: Red/brown brittle 9309-ACM-09 crumbly material with debris Interior ACM (%): ND NA Layer 2: Gray crumbly material Layer 1: Light brown vinyl the ACM ( ND Approximately Layer 2: Trace black soft mastic er 230 square feet 9309-ACM-10 Interior Layer 1 (Same as sample id: 6% Chrysotile 9309 ACM-07) 10 May 2023 DH Environmental, Inc. 1 1011 SW Klickitat Way, Suite 107 1 Seattle, WA 98134 Hazardous Building Materials Assessment City of Edmonds — 9309 Bowdoin Way, Edmonds, WA 98020 • Layer 1: White vinyl with white patterned vinyl surface 9309-ACM-11 Layer 2: Clear soft adhesive Interior ACM (%): ND NA Layer 3: Brown soft mastic with paint and debris Layer 1: Red and black vinyl tile ACM (%): ND Approximately 9309-ACM-12 Layer 2: Black asphaltic mastic Interior Layer 1 130 square feet with debris 8% Chrysotile Layer 1: Tan and red vinyl material 9309-ACM-13 Layer 2: Black asphaltic fibrous Interior ACM (%): ND NA backing Layer 1: Black asphaltic fibrous material with granules and debris 9309-ACM-14 Layer 2: Black asphaltic fibrous Exterior ACM (%): ND NA material with granules and debris Layer 3: Black asphaltic fibrous material Layer 1: Black asphaltic soft Approximately material ACM (%): 3 square feet Layer 2: Black asphaltic soft Note: This material 9309-ACM-15 crumbly material Exterior Layer 2 may be encountered Layer 3: Black asphaltic fibrous 7% Chrysotile in other parts of the material with granules and debris roof. Layer 1: Black asphaltic layered fibrous material with granules and 9309-ACM-16 debris Exterior ACM (%): ND NA Layer 2: Black asphaltic soft fibrous material 9309-ACM-17 Layer 1: Beige sandy material Outbuilding ACM (%): ND NA Layer 1: Trace white compacted ACM (%): 9309-ACM-18 powdery material with paint Outbuilding Layer 1 Approximately Layer 2: White chalky material 0 3/o Chrysotile 160 square feet with paper Layer 1: Black asphaltic fibrous 9309-ACM-19 material with red crumbly material Outbuilding ACM (%): ND NA and debris Table 1: ACM Sample Results ND: Not Detected at Reporting Limit NA: Not Applicable ACM: Asbestos Containing Material 10 May 2023 DH Environmental, Inc. 1 1011 SW Klickitat Way, Suite 107 1 Seattle, WA 98134 Hazardous Building Materials Assessment 1 City of Edmonds — 9309 Bowdoin Way, Edmonds, WA 98020 4.0 LEAD BASED PAINT (LBP) ASSESSMENT 4.1 Applicable LBP Regulations DOSH regulates exposure of workers in general industry (WAC 96-62-07521) and construction workers (WAC 296- 155-176) 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 WAC 296-62-07521 must be implemented, including training, air monitoring, and medical surveillance. The USEPA regulates LBP activities in residential target housing (40 CFR 745, Subpart Q. 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 Washington State requires generators of solid waste to determine whether their waste is a dangerous 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 WAC 173-303-090. Solid wastes containing leachable lead detected at a concentration of 5 mg/L or greater must be accumulated, stored, transported and disposed of as dangerous waste. Scrap metal that will be recycled is exempt from regulation as a Dangerous Waste in accordance with WAC 173-303-071(ff). 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/cm'. 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 2. 10 May 2023 DH Environmental, Inc. 1 1011 SW Klickitat Way, Suite 107 1 Seattle, WA 98134 Hazardous Building Materials Assessment City of Edmonds — 9309 Bowdoin Way, Edmonds, WA 98020 4.3 LBP Sampling Results Ninety-two (92) locations in the building were analyzed using an X-ray fluorescence analyzer (XRF). Thirty-five (35) of the locations were found to contain lead above the Federal lead -based paint concentration criteria 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 Condition Concentration Notes Lead Concentration: Pb-07 Interior Windowsill Wood White Deteriorated 1.2 mg/cmZ Window Lead Concentration: Pb-08 Interior Wood White Deteriorated Frame 1.3 mg/cmZ Lead Concentration: Pb-09 Interior Floor Trim Wood Gray Deteriorated 1.3 mg/cmZ Lead Concentration: Pb-10 Interior Floor Trim Wood Gray Deteriorated 1 mg/cmZ Lead Concentration: Pb-12 Interior Door Jamb Wood White Deteriorated 1.4 mg/cmZ Window Lead Concentration: Pb-13 Interior Wood White Deteriorated Trim 1.2 mg/cmZ Lead Concentration: Pb-16 Interior Windowsill Wood White Deteriorated 1.2 mg/cmZ Upper Wall Lead Concentration: Pb-17 Interior Wood White Deteriorated Trim 1.5 mg/cmZ Kitchen Lead Concentration: Pb-19 Interior Wood Blue Intact/Poor Cabinet 1.9 mg/cmZ Kitchen Lead Concentration: Pb-21 Interior Wood Blue Intact/Poor Cabinet 1.2 mg/cmZ Lead Concentration: Pb-34 Interior Wall Drywall Tan Intact Z 5 mg/cm Lead Concentration: Pb-35 Interior Wall Drywall Tan Intact Z 5 mg/cm Interior Lead Concentration: Pb-46 Ceiling Drywall White Intact Basement Z 3.8 mg/cm Interior Lead Concentration: Pb-47 Shelf Wood Blue Deteriorated Basement 5 mg/cmZ Interior Lead Concentration: Pb-48 Door Wood Yellow Deteriorated Basement 3 mg/cmZ Interior Window Lead Concentration: Pb-54 Mesh White Deteriorated Basement Cover 2.2 mg/cmZ Lead Concentration: Pb-56 Exterior Door Trim Wood Yellow Deteriorated 5 mg/cmZ Lead Concentration: Pb-57 Exterior Door Jamb Wood Yellow Deteriorated 5 mg/cmZ 10 May 2023 DH Environmental, Inc. 1 1011 SW Klickitat Way, Suite 107 1 Seattle, WA 98134 Hazardous Building Materials Assessment City of Edmonds — 9309 Bowdoin Way, Edmonds, WA 98020 Lead Concentration: Pb-59 Exterior Trim Wood Green Deteriorated 4.1 mg/cmZ Lead Concentration: Pb-60 Exterior Trim Wood White Deteriorated 5 mg/cmZ Window Lead Concentration: Pb-61 Exterior Wood Green Deteriorated Frame 5 mg/cmZ Lead Concentration: Pb-62 Exterior Siding Wood Gray Deteriorated 4.9 mg/cmZ Lead Concentration: Pb-68 Exterior Windowsill Wood Green Deteriorated 5 mg/cmZ Window Lead Concentration: Pb-69 Exterior Wood Green Deteriorated Frame 1.2 mg/cmZ Lead Concentration: Pb-71 Exterior Windowsill Wood Green Deteriorated 2.2 mg/cmZ Lead Concentration: Pb-73 Exterior Windowsill Wood Green Deteriorated 3.6 mg/cmZ Window Lead Concentration: Pb-76 Exterior Wood Green Deteriorated Frame 1 mg/cm2 Lead Concentration: Pb-77 Exterior Door Jamb Wood Gray Deteriorated 5 mg/cm2 Lead Concentration: Pb-78 Exterior Door Trim Wood Green/Gray Deteriorated 2 mg/cm2 Lead Concentration: Pb-79 Exterior Siding Wood Gray Deteriorated 5 mg/cmZ Lead Concentration: Pb-80 Exterior Siding Wood Gray Deteriorated 5 mg/cmZ Lead Concentration: Pb-81 Exterior Door Jamb Wood Gray Deteriorated 5 mg/cmZ Lead Concentration: Pb-82 Exterior Door Trim Wood Gray Deteriorated 5 mg/cm2 Lead Concentration: Pb-83 Exterior Siding Wood Gray Deteriorated 5 mg/cm2 Table 2: LBP Sample Results mg/cm2: milligrams per Square Centimeter LBP: Lead Based Paint 10 May 2023 DH Environmental, Inc. 1 1011 SW Klickitat Way, Suite 107 1 Seattle, WA 98134 Hazardous Building Materials Assessment City of Edmonds — 9309 Bowdoin Way, Edmonds, WA 98020 5.0 POLYCHLORINATED BIPHENYLS (PCBs) ASSESSMENT 5.1 Applicable PCB Regulations Common PCB building materials include caulking, paint and adhesives. Current regulations require the removal of building materials containing PCBs if found with concentrations of 50 parts per million (ppm) or greater. Reinforcing this regulatory interpretation, EPA's current policy is clearly stated on the agency's website under a page titled Current Best Practices for PCBs in Caulk Fact Sheet - Removal and Clean -Up of PCBs in Caulk and PCB - Contaminated Soil and Building Material' . The website states the following: "Caulk containing PCBs at concentrations > 50 ppm is not authorized for use and must be removed and properly disposed. When disposed, the caulk must be managed as PCB bulk product waste, defined at 40 CFR §761.3. Regulations governing the cleanup and disposal of PCB bulk product waste are provided at 40 CFR §761.62. PCB -containing caulk or caulk coated building material containing PCBs at concentrations > 50 ppm must be removed unless otherwise approved by EPA under a risk -based disposal approval issued under 40 CFR § 761.62(c)." PCBs are also contained within the fluorescent lamp capacitors and interior potting material of old, magnetic lighting fixtures. The capacitor regulates the amount of electricity flowing into the lighting fixture, and the potting material insulates the FLB and reduces the "humming" noise. Because all PCB -containing fluorescent light ballasts currently in use have exceeded their designated life span, they are susceptible to leaking or rupturing. This may lead to increased exposure to building occupants. Residues from these sources are difficult and costly to clean up. Additionally, intact PCB -containing fluorescent light ballasts may emit small amounts of PCBs into the air during normal use of the lighting fixtures. EPA recommends all PCB -containing fluorescent light ballasts be removed from lighting fixtures. The fluorescent light ballasts and capacitors are regulated in concentrations greater than 50 mg/kg by the USEPA, and at concentrations greater than 2 mg/kg by the Washington State Department of Ecology. In accordance with 40 CFR 761.2, "any person must assume that a capacitor manufactured prior to July 2, 1979, whose PCB concentration is not established contains >_500 ppm PCBs. Any person may assume that a capacitor manufactured afterJuly 2, 1979, is non -PCB (i.e., <50 ppm PCBs). If the date of manufacture is unknown, any person must assume the capacitor contains >_500 ppm PCBs. Any person may assume that a capacitor marked at the time of manufacture with the statement "No PCBs" in accordance with § 761.40(g) is non -PCB." 5.2 PCB Sampling Methodology / Findings Fluorescent lights were observed during the assessment but were not able to be accessed to verify that light ballasts say, "no PCBs". Careful inspection of each ballast in the building should be conducted upon removal to ensure proper management of the ballasts. If any of the ballasts do not contain the words "no PCBs" and were 1 http://www.epa.gov/pcbsincauIk/cauIkremoval.htm 10 May 2023 DH Environmental, Inc. 1 1011 SW Klickitat Way, Suite 107 1 Seattle, WA 98134 Hazardous Building Materials Assessment City of Edmonds — 9309 Bowdoin Way, Edmonds, WA 98020 manufactured before July 2, 1979, they must be assumed to contain PCBs unless sampling confirms they do not. In addition, employers must inform their employees of PCB hazards in accordance with WAC 296-800-170. 5.3 PCB Sampling Results One sample of suspected PCB containing caulking was collected and analyzed for PCBs by EPA Method 8082. The sample was below the regulatory limit of 50 mg/kg for classification as PCB Bulk Product Waste. The location of the sample collection is shown in Figure 2. Table 3 below shows the results of the PCB sample. Sample ID Material Description Sample Location Concentration Material Quantity Estimate (if applicable) 9039-PCB-01 Caulking Bathroom PCBs (mg/kg): ND NA Table 3: PCB Sample Results mg/kg: milligrams per kilogram (parts per million) PCB: Polychlorinated Biphenyls 10 May 2023 DH Environmental, Inc. 1 1011 SW Klickitat Way, Suite 107 1 Seattle, WA 98134 Hazardous Building Materials Assessment City of Edmonds — 9309 Bowdoin Way, Edmonds, WA 98020 6.0 OTHER HAZARDOUS BUILDING MATERIALS ASSESSMENT A visual inspection was conducted to inventory other hazardous building materials. Other hazardous building materials assessed included universal waste, refrigerant gases, propane cylinders, and fire extinguishers. 6.1 Universal Waste Universal waste is a category of dangerous waste that allows all businesses to handle several common types of dangerous waste under simplified rules. Managing these materials as universal waste means that they are not counted toward your generator status or reported on your Dangerous Waste Annual Report. In Washington State, five 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. 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. 6.2 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. 10 May 2023 DH Environmental, Inc. 1 1011 SW Klickitat Way, Suite 107 1 Seattle, WA 98134 Hazardous Building Materials Assessment City of Edmonds — 9309 Bowdoin Way, Edmonds, WA 98020 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. 6.3 Fire Extinguishers Dry chemical and liquid fire extinguishers may designate as dangerous 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. 6.4 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. 6.5 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. Other Hazardous Building Materials ota Refrigerator 1 Freezer 1 Misc. Paint Containers 30-40 Misc. Pesticides 5-10 10 May 2023 DH Environmental, Inc. 1 1011 SW Klickitat Way, Suite 107 1 Seattle, WA 98134 Hazardous Building Materials Assessment City of Edmonds — 9309 Bowdoin Way, Edmonds, WA 98020 7.0 CONCLUSIONS AND RECOMMENDATIONS 7.1 Asbestos Containing Materials ACM was detected in some of the areas where the work was understood to be conducted. Therefore, we recommend that this work should be considered an "Asbestos Project" as defined in the Puget Sound Clean Air Agency Regulation 3, or WAC 296-62-07701. 7.2 Lead Based Paint Lead paint 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 limitz to the extent that such controls are feasible in accordance with WAC 296-155-17611. 7.3 Polychlorinated Biphenyls One (1) sample of suspected PCB containing caulking was collected and analyzed for PCBs by EPA Method 8082. The sample was below the regulatory limit of 50 mg/kg for PCBs. 7.3 Other Hazardous Building Materials Household hazardous waste was collected throughout the property and stored in the outbuilding. We recommend that the City of Edmonds should coordinate with Snohomish County to drop off the waste at one of their household hazardous waste collection locations. Z WAC 296-155-17607 (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. 10 May 2023 DH Environmental, Inc. 1 1011 SW Klickitat Way, Suite 107 1 Seattle, WA 98134 Hazardous Building Materials Assessment City of Edmonds — 9309 Bowdoin Way, Edmonds, WA 98020 8.0 LIMITATIONS This report presents the results of the hazardous building materials assessment conducted for the City of Edmonds at 9309 Bowdoin Way in Edmonds, WA. 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 Puget Sound Clean Air Agency Regulation III, Article 4.02(a), requires an "Asbestos Survey" before the renovation or demolition of a building. In addition, the Washington State Dangerous Waste Regulations (WAC 173-303) 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, polychlorinated biphenyls universal waste, and other hazardous building materials discussed in Section 6 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 City of Edmonds 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. 10 May 2023 DH Environmental, Inc. 1 1011 SW Klickitat Way, Suite 107 1 Seattle, WA 98134 Figure 1 Sample Locations: Interior Home Asbestos & Lead Paint Assessment Date:05-04-2023 By: Brian Johnson AHERA Building Inspector �-s z 9239-ACr�1-3& C9 _ Pt-t � Pb-36 9309-40 — - Pb-21 Pb-` Pt-14 Pb-08 Pb i t Pb-34 Pb-15 Pb-3 309-A.0 1,�-08 Pb-42 Dining Room 9309-ACM-11 Bathroom Pt:04r: Pt-39 Pt-C9 9309 ACM-05 9309-ACM-02. 03, S 83N-AC%113 Pb-25 Pb-24 Pb-04 N A 9309-ACh'-71 )K3H- Environmental 51 Site Address: 9309 Bowdoin Way Edmonds, WA 98020 Lead Paint & Asbestos Assessment Interior - Home Key: • Sample Locations Figure 1 Red = Positive Test Result Sample Locations *Not to scale Figure 2 Sample Locations: Home Exterior Asbestos & Lead Paint Assessment Date:05-04-2023 By: Brian Johnson AHERA Building Inspector Pb-77 Db-78 7EE Pb-75 Pb-76 Pb-79 -81 B Pb-82 Pb-74 Pb-83 9309-ACM-16 Pb-73 Chimney Pb-84 Pb-72 9309-ACPA-15 Pb-70 P b-71 Pb-85 Pb-69 Fb-68 Pb-67 Pb-66 9309-ACM-14 il Pb-57Pb-56 Pb-61 Pb 58 N Pb-60 Pb-59 )K3H- Environmenfal 51 Site Address: 9309 Bowdoin Way Edmonds, WA 98020 Lead Paint & Asbestos Assessment Exterior - Home Key: • Sample Locations Figure 2 Red = Positive Test Result Sample Locations *Not to scale Figure 3 Sample Locations: Home Basement Lead Paint Assessment 17-1 a Pb 50 r Pb-4g Pb-53 Pb-52 Pb- E, I_ N Pb-15 A Key: • Sample Locations Date:05-04-2023 �Ns Lead Paint Assessment Environmental Figure 3 Red = Positive Test Result Interior - Basement Sample Locations By: Brian Johnson Site Address: 9309 Bowdoin Way AHERA Building Inspector Edmonds, WA 98020 *Not to scale Figure 4 Sample Locations: Outbuilding Asbestos & Lead Paint Assessment Date:05-04-2023 By: Brian Johnson AHERA Building Inspector )K3H- Environmenfal 51 Site Address: 9309 Bowdoin Way Edmonds, WA 98020 Pb-91 Pb-90 Pb-89 9039-ACI-0-18 Pb-87 Pb-88 P5-8G nN 9309-ACr-,I-19 / Lead Paint & Asbestos Assessment Interior & Exterior - Outbuilding Key: • Sample Locations Figure 4 Red = Positive Test Result Sample Locations *Not to scale Attachment 1 Site Photos Sample ID: 9309-ACM-01 Sample ID: 9309-ACM-02 W" �{ ��Y r t t t sas� k �Y� Y 1 Sample ID: 9309-ACM-03 Sample ID: 9309-ACM-04 Sample ID: 9309-ACM-05 Sample ID: 9309-ACM-07 Sample ID: 9309-ACM-06 Sample ID: 9309-ACM-08 k i loc; ZP 43e' A -- Sample ID: 9309-ACM-09 Sample ID: 9309-ACM-10 Sample ID: 9309-ACM-11 Sample ID: 9309-ACM-12 Sample ID: 9309-ACM-13 Sample ID: 9309-ACM-15 Sample ID: 9309-ACM-14 Sample ID: 9309-ACM-16 Sample ID: 9309-ACM-17 Sample ID: 9309-ACM-19 Sample ID: 9309-ACM-18 Sample ID: 9309-PCB-01 Non -ACM Fiberglass Insulation Attachment 2 Laboratory Analytical Reports May 8, 2023 Brian Johnson DH Environmental 1011 SW Klickitat Way Suite 107 Seattle, WA 98134 RE: Bulk Asbestos Fiber Analysis; NVL Batch # 2307219.00 Client Project: 9309 Location: City of Edmonds Dear Mr. Johnson, NVL INDUSTRIAL HYGIENE SERVICES LABORATORY I MANAGEMENT - TRAINING Enclosed please find test results for the 19 sample(s) submitted to our laboratory for analysis on 5/4/2023. 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, Nick Ly, Technical Director Enc.: Sample Results �W nn' Testing Lab Code:102063-0 Phone: 206 547.0100 I Fax: 206 634.1936 Toll Free: 1.888.NVL.LABS (685.5227) 4708 Aurora Avenue North Seattle, WA 98103-6516 page 1 of 13 Bulk Asbestos Fibers Analysis By Polarized Light Microscopy Client: DH Environmental Address: 1011 SW Klickitat Way Suite 107 Seattle, WA 98134 Attention: Mr. Brian Johnson Project Location: City of Edmonds NVL Batch #: 2307219.00 Client Project #: 9309 Date Received: 5/4/2023 Samples Received: 19 Samples Analyzed: 19 Method: EPA/600/R-93/116 Lab ID: 23044318 Client Sample #: 9309-ACM-01 Location: City of Edmonds Comments: Unsure of correct layer sequence. Layer 1 of 2 Description: Tan fibrous material with trace black asphaltic mastic Non -Fibrous Materials: Other Fibrous Materials:% Asbestos Type: % Binder/Filler, Fine particles, Asphaltic Particles Cellulose 75% None Detected ND Layer 2 of 2 Description: Loose white sandy material with wood deris Non -Fibrous Materials: Other Fibrous Materials:% Asbestos Type: % Binder/Filler, Sand, Fine particles Cellulose 3% None Detected ND Fine grains, Wood flakes Lab ID: 23044319 Client Sample #: 9309-ACM-02 Location: City of Edmonds Layer 1 of 1 Description: Tan brittle material with thin black surface Non -Fibrous Materials: Other Fibrous Materials:% Binder/Filler, Fine particles, Fine grains None Detected ND Lab ID: 23044320 Client Sample #: 9309-ACM-03 Location: City of Edmonds Layer 1 of 3 Description: Thin white compacted powdery material with paint Non -Fibrous Materials: Other Fibrous Materials:% Calcareous binder, Calcareous particles, Paint None Detected ND Layer 2 of 3 Description: Tan crumbly material Non -Fibrous Materials: Other Fibrous Materials:% Binder/Filler, Fine particles, Fine grains Cellulose 1 % Asbestos Type: % None Detected ND Asbestos Type: % None Detected ND Asbestos Type: % None Detected ND Sampled by: Client Analyzed by: Hilary Crumley Date:05/05/2023 Reviewed by: Nick Ly Date:05/08/2023 Nick Ly, Technical Director 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 EPA 40 CFR Appendix E to Subpart E of Part 763 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 ASB-02 page 2 of 13 Bulk Asbestos Fibers Analysis By Polarized Light Microscopy Client: DH Environmental Address: 1011 SW Klickitat Way Suite 107 Seattle, WA 98134 Attention: Mr. Brian Johnson Project Location: City of Edmonds Layer 3 of 3 Description: Gray brittle material with brown crumbly coating and debris Non -Fibrous Materials: Other Fibrous Materials:% Binder/Filler, Fine particles, Fine grains Cellulose <1 % Mineral grains, Debris Lab ID: 23044321 Client Sample #: 9309-ACM-04 Location: City of Edmonds Comments: Unsure of correct layer sequence. Layer 1 of 4 Description: Thin tan crumbly material with layered paint Non -Fibrous Materials: Other Fibrous Materials:% Binder/Filler, Fine particles, Paint None Detected ND Layer 2 of 4 Description: White crumbly/sandy material Non -Fibrous Materials: Binder/Filler, Sand, Fine particles Layer 3 of 4 Description: Off-white sandy material Non -Fibrous Materials: Binder/Filler, Sand, Fine particles Fine grains Layer 4 of 4 Description: Thin gray brittle material Non -Fibrous Materials: Binder/Filler, Fine particles, Fine grains Mineral grains Other Fibrous Materials:% None Detected ND Other Fibrous Materials:% Cellulose 2% Other Fibrous Materials:% None Detected ND NVL Batch #: 2307219.00 Client Project #: 9309 Date Received: 5/4/2023 Samples Received: 19 Samples Analyzed: 19 Method: EPA/600/R-93/116 Asbestos Type: % None Detected ND Asbestos Type: % None Detected ND Asbestos Type: % None Detected ND Asbestos Type: % None Detected ND Asbestos Type: % None Detected ND Lab ID: 23044322 Client Sample #: 9309-ACM-05 Location: City of Edmonds Comments: Actual sample composition does not match material description on client COC. Sample was dried. Sampled by: Client Analyzed by: Hilary Crumley Date:05/05/2023 Reviewed by: Nick Ly Date:05/08/2023 Nick Ly, Technical Director 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 EPA 40 CFR Appendix E to Subpart E of Part 763 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 ASB-02 page 3 of 13 Bulk Asbestos Fibers Analysis NVL By Polarized Light Microscopy Client: DH Environmental Batch #: 2307219.00 Address: 1011 SW Klickitat Way Suite 107 Client Project #: 9309 Seattle, WA 98134 Date Received: 5/4/2023 Samples Received: 19 Attention: Mr. Brian Johnson Samples Analyzed: 19 Project Location: City of Edmonds Method: EPA/600/R-93/116 Layer 1 of 1 Description: Loose dark brown crumbly material with wood debris Non -Fibrous Materials: Other Fibrous Materials:% Binder/Filler, Fine grains, Fine particles Cellulose 7% Wood flakes, Debris, Insect parts Glass fibers 4% Asbestos Type: % None Detected ND Lab ID: 23044323 Client Sample #: 9309-ACM-06 Location: City of Edmonds Comments: Wet sample was dried prior to analysis. Insufficient material in layer 1 for analysis. Layer 1 of 3 Description: Trace off-white crumbly material with layered paint Non -Fibrous Materials: Other Fibrous Materials:% Asbestos Type: % Binder/Filler, Fine particles, Paint Cellulose 2% None Detected ND Layer 2 of 3 Description: Thin white compacted powdery material Non -Fibrous Materials: Other Fibrous Materials:% Asbestos Type: % Calcareous binder, Calcareous particles Cellulose <1 % None Detected ND Layer 3 of 3 Description: Thin white chalky material with paper with wood debris Non -Fibrous Materials: Other Fibrous Materials:% Asbestos Type: % Gypsum/Binder, Fine grains, Fine particles Cellulose 28% None Detected ND Wood flakes, Debris Lab ID: 23044324 Client Sample #: 9309-ACM-07 Location: City of Edmonds Comments: Insufficient amount of layer 2 for thorough analysis. Layer 1 of 2 Description: Light brown vinyl tile Non -Fibrous Materials: Other Fibrous Materials:% Asbestos Type: % Vinyl/Binder, Fine grains, Fine particles None Detected ND Chrysotile 7% Sampled by: Client Analyzed by: Hilary Crumley Date:05/05/2023 Reviewed by: Nick Ly Date:05/08/2023 Nick Ly, Technical Director 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 EPA 40 CFR Appendix E to Subpart E of Part 763 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 ASB-02 page 4 of 13 Bulk Asbestos Fibers Analysis By Polarized Light Microscopy Client: DH Environmental Address: 1011 SW Klickitat Way Suite 107 Seattle, WA 98134 Attention: Mr. Brian Johnson Project Location: City of Edmonds NVL Batch #: 2307219.00 Client Project #: 9309 Date Received: 5/4/2023 Samples Received: 19 Samples Analyzed: 19 Method: EPA/600/R-93/116 Layer 2 of 2 Description: Trace black soft soft mastic Non -Fibrous Materials: Other Fibrous Materials:% Asbestos Type: % Mastic/Binder, Fine particles None Detected ND None Detected ND Lab ID: 23044325 Client Sample #: 9309-ACM-08 Location: City of Edmonds Layer 1 of 2 Description: Brown flat hard compressed fibrous material with red surface Non -Fibrous Materials: Other Fibrous Materials:% Binder/Filler, Fine particles None Detected ND Layer 2 of 2 Description: Thin black asphaltic mastic with debris Non -Fibrous Materials: Other Fibrous Materials:% Asphalt/Binder, Asphaltic Particles, Debris Cellulose 1 % Lab ID: 23044326 Client Sample #: 9309-ACM-09 Location: City of Edmonds Comments: Unsure of correct layer sequence. Layer 1 of 2 Description: Red/brown brittle crumbly material with debris Non -Fibrous Materials: Other Fibrous Materials:% Binder/Filler, Fine particles, Fine grains None Detected ND Debris Layer 2 of 2 Description: Gray crumbly material Non -Fibrous Materials: Other Fibrous Materials:% Binder/Filler, Fine particles, Fine grains None Detected ND Lab ID: 23044327 Client Sample #: 9309-ACM-10 Location: City of Edmonds Comments: Insufficient amount of layer 2 for thorough analysis. Asbestos Type: % None Detected ND Asbestos Type: % None Detected ND Asbestos Type: % None Detected ND Asbestos Type: % None Detected ND Sampled by: Client Analyzed by: Hilary Crumley Date:05/05/2023 Reviewed by: Nick Ly Date:05/08/2023 Nick Ly, Technical Director 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 EPA 40 CFR Appendix E to Subpart E of Part 763 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 ASB-02 page 5 of 13 Bulk Asbestos Fibers Analysis By Polarized Light Microscopy Client: DH Environmental Address: 1011 SW Klickitat Way Suite 107 Seattle, WA 98134 Attention: Mr. Brian Johnson Project Location: City of Edmonds NVL Batch #: 2307219.00 Client Project #: 9309 Date Received: 5/4/2023 Samples Received: 19 Samples Analyzed: 19 Method: EPA/600/R-93/116 Layer 1 of 2 Description: Light brown vinyl tile Non -Fibrous Materials: Other Fibrous Materials:% Asbestos Type: % Vinyl/Binder, Fine grains, Fine particles None Detected ND Chrysotile 6% Layer 2 of 2 Description: Trace black soft mastic Non -Fibrous Materials: Other Fibrous Materials:% Asbestos Type: % Mastic/Binder, Fine particles None Detected ND None Detected ND Lab ID: 23044328 Client Sample #: 9309-ACM-11 Location: City of Edmonds Layer 1 of 3 Description: White vinyl with white patterned vinyl surface Non -Fibrous Materials: Other Fibrous Materials:% Vinyl/Binder, Fine grains, Fine particles None Detected ND Layer 2 of 3 Description: Clear soft adhesive Non -Fibrous Materials: Other Fibrous Materials:% Adhesive/Binder, Fine particles None Detected ND Layer 3 of 3 Description: Brown soft mastic with paint and debris Non -Fibrous Materials: Other Fibrous Materials:% Mastic/Binder, Fine particles, Paint Cellulose 2% Lab ID: 23044329 Client Sample #: 9309-ACM-12 Location: City of Edmonds Layer 1 of 2 Description: Red and black vinyl tile Non -Fibrous Materials: Other Fibrous Materials:% Vinyl/Binder, Fine particles, Fine grains None Detected ND Layer 2 of 2 Description: Black asphaltic mastic with debris Non -Fibrous Materials: Other Fibrous Materials:% Asphalt/Binder, Asphaltic Particles, Debris Cellulose 1 % Asbestos Type: % None Detected ND Asbestos Type: % None Detected ND Asbestos Type: % None Detected ND Asbestos Type: % Chrysotile 8% Asbestos Type: % None Detected ND Sampled by: Client Analyzed by: Hilary Crumley Date:05/05/2023 Reviewed by: Nick Ly Date:05/08/2023 Nick Ly, Technical Director 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 EPA 40 CFR Appendix E to Subpart E of Part 763 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 ASB-02 page 6 of 13 Bulk Asbestos Fibers Analysis NVL By Polarized Light Microscopy Client: DH Environmental Batch #: 2307219.00 Address: 1011 SW Klickitat Way Suite 107 Client Project #: 9309 Seattle, WA 98134 Date Received: 5/4/2023 Samples Received: 19 Attention: Mr. Brian Johnson Samples Analyzed: 19 Project Location: City of Edmonds Method: EPA/600/R-93/116 Lab ID: 23044330 Client Sample #: 9309-ACM-13 Location: City of Edmonds Layer 1 of 2 Description: Tan and red vinyl material Non -Fibrous Materials: Vinyl/Binder, Fine particles, Fine grains Layer 2 of 2 Description: Black asphaltic fibrous backing Non -Fibrous Materials: Asphalt/Binder, Asphaltic Particles Other Fibrous Materials:% Cellulose 16% Other Fibrous Materials:% Cellulose 52% Asbestos Type: % None Detected ND Asbestos Type: % None Detected ND Lab ID: 23044331 Client Sample #: 9309-ACM-14 Location: City of Edmonds Comments: Unsure of correct layer sequence. Layer 1 of 3 Description: Black asphaltic fibrous material with granules and debris Non -Fibrous Materials: Other Fibrous Materials:% Asbestos Type: % Asphalt/Binder, Asphaltic Particles, Granules Cellulose 16% None Detected ND Organic debris Layer 2 of 3 Description: Black asphaltic fibrous material with granules and debris Non -Fibrous Materials: Other Fibrous Materials:% Asbestos Type: % Asphalt/Binder, Asphaltic Particles, Granules Cellulose 14% None Detected ND Organic debris, Insect parts Layer 3 of 3 Description: Black asphaltic fibrous material Non -Fibrous Materials: Other Fibrous Materials:% Asbestos Type: % Asphalt/Binder, Asphaltic Particles Cellulose 51 % None Detected ND Lab ID: 23044332 Client Sample #: 9309-ACM-15 Location: City of Edmonds Comments: Unsure of correct layer sequence. Sampled by: Client Analyzed by: Hilary Crumley Date:05/05/2023 Reviewed by: Nick Ly Date:05/08/2023 Nick Ly, Technical Director 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 EPA 40 CFR Appendix E to Subpart E of Part 763 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 ASB-02 page 7 of 13 Bulk Asbestos Fibers Analysis NVL By Polarized Light Microscopy Client: DH Environmental Batch #: 2307219.00 Address: 1011 SW Klickitat Way Suite 107 Client Project #: 9309 Seattle, WA 98134 Date Received: 5/4/2023 Samples Received: 19 Attention: Mr. Brian Johnson Samples Analyzed: 19 Project Location: City of Edmonds Method: EPA/600/R-93/116 Layer 1 of 3 Description: Black asphaltic soft material Non -Fibrous Materials: Other Fibrous Materials:% Asbestos Type: % Asphalt/Binder, Asphaltic Particles Cellulose 4% None Detected ND Layer 2 of 3 Description: Black asphaltic soft crumbly material Non -Fibrous Materials: Other Fibrous Materials:% Asbestos Type: % Asphalt/Binder, Asphaltic Particles None Detected ND Chrysotile 7% Layer 3 of 3 Description: Black asphaltic fibrous material with granules and debris Non -Fibrous Materials: Other Fibrous Materials:% Asbestos Type: % Asphalt/Binder, Asphaltic Particles, Granules Cellulose 11 % None Detected ND Debris Lab ID: 23044333 Client Sample #: 9309-ACM-16 Location: City of Edmonds Layer 1 of 2 Description: Black asphaltic layered fibrous material with granules and debris Non -Fibrous Materials: Other Fibrous Materials:% Asbestos Type: % Asphalt/Binder, Asphaltic Particles, Granules Cellulose 17% None Detected ND Organic debris Layer 2 of 2 Description: Black asphaltic fibrous material Non -Fibrous Materials: Other Fibrous Materials:% Asbestos Type: % Asphalt/Binder, Asphaltic Particles Cellulose 51 % None Detected ND Lab ID: 23044334 Client Sample #: 9309-ACM-17 Location: City of Edmonds Layer 1 of 1 Description: Beige sandy material Non -Fibrous Materials: Other Fibrous Materials:% Asbestos Type: % Binder/Filler, Sand, Fine particles Cellulose 2% None Detected ND Sampled by: Client Analyzed by: Hilary Crumley Date:05/05/2023 Reviewed by: Nick Ly Date:05/08/2023 Nick Ly, Technical Director 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 EPA 40 CFR Appendix E to Subpart E of Part 763 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 ASB-02 page 8 of 13 Bulk Asbestos Fibers Analysis By Polarized Light Microscopy Client: DH Environmental Address: 1011 SW Klickitat Way Suite 107 Seattle, WA 98134 Attention: Mr. Brian Johnson Project Location: City of Edmonds Fine grains NVL Batch #: 2307219.00 Client Project #: 9309 Date Received: 5/4/2023 Samples Received: 19 Samples Analyzed: 19 Method: EPA/600/R-93/116 Lab ID: 23044335 Client Sample #: 9309-ACM-18 Location: City of Edmonds Comments: Trace amount of layer 1 remaining. Layer 1 of 2 Description: Trace white compacted powdery material with paint Non -Fibrous Materials: Other Fibrous Materials:% Asbestos Type: % Calcareous binder, Calcareous particles, Paint None Detected ND Chrysotile 3% Layer 2 of 2 Description: White chalky material with paper Non -Fibrous Materials: Other Fibrous Materials:% Asbestos Type: % Gypsum/Binder, Fine grains, Fine particles Cellulose 26% None Detected ND Lab ID: 23044336 Client Sample #: 9309-ACM-19 Location: City of Edmonds Layer 1 of 1 Description: Black asphaltic fibrous material with red crumbly material and debris Non -Fibrous Materials: Other Fibrous Materials:% Asphalt/Binder, Asphaltic Particles, Fine particles Cellulose 51 % Organic debris Asbestos Type: % None Detected ND Sampled by: Client Analyzed by: Hilary Crumley Date:05/05/2023 Reviewed by: Nick Ly Date:05/08/2023 Nick Ly, Technical Director 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 EPA 40 CFR Appendix E to Subpart E of Part 763 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 ASB-02 page 9 of 13 ASBESTOS LABORATORY SERVICES NVL Company DH Environmental NVL Batch Number ZJUIZI9.00 Address 1011 SW Klickitat Way Suite 107 TAT 2 Days AR No Seattle, WA 98134 Rush TAT Project Manager Mr. Brian Johnson Due Date 5/8/2023 Time 3:20 PM Phone (206) 934-4043 Email brian.johnson@dhenviro.com Fax (206) 930-4043 Project Name/Number: 9309 Project Location: City of Edmonds Subcategory PLM Bulk Item Code AS2-02 EPA 600/R-93-116 Asbestos by PLM <bulk> Total Number of Samples 19 Lab ID Sample ID Description Rush Samples A/R 1 23044318 9309-ACM-01 A 2 23044319 9309-ACM-02 A 3 123044320 9309-ACM-03 A 4 23044321 9309-ACM-04 A 5 23044322 9309-ACM-05 A 6 23044323 9309-ACM-06 A 7 23044324 9309-ACM-07 A 8 23044325 9309-ACM-08 A 9 123044326 9309-ACM-09 A 10 23044327 9309-ACM-10 A 11 23044328 9309-ACM-11 A 12 123044329 9309-ACM-12 A 13 23044330 9309-ACM-13 A 14 23044331 9309-ACM-14 A 15 123044332 9309-ACM-15 A 16 23044333 9309-ACM-16 A 17 23044334 9309-ACM-17 A 18 123044335 9309-ACM-18 A Print Name Signature Company Date Time Sampled by Client Relinquished by Client Office Use Only Print Name Signature Comr)anv Date Time Received by Rachelle Miller NVL 5/4/23 1520 Analyzed by Hilary Crumley NVL 5/5/23 Results Called by Faxed F Emailed Special Instructions: Date: 5/4/2023 Time: 3:19 PM Entered By: Rachelle Miller page 10 of 13 ASBESTOS LABORATORY SERVICES H V L Company DH Environmental NVL Batch Number ZJUIZI9.00 Address 1011 SW Klickitat Way Suite 107 TAT 2 Days AR No_ Seattle, WA 98134 Project Manager Mr. Brian Johnson Phone (206) 934-4043 Project Name/Number: 9309 Rush TAT Due Date 5/8/2023 Time 3:20 PM Email brian.johnson@dhenviro.com Fax (206) 930-4043 Project Location: City of Edmonds Subcategory PLM Bulk Item Code AS2-02 EPA 600/R-93-116 Asbestos by PLM <bulk> Total Number of Samples 19 Rush Samples Lab ID Sample ID Description A/R 19 123044336 9309-ACM-19 A Print Name Signature Company Date Time Sampled by Client Relinquished by Client Office Use Only Print Name Signature Comr)anv Date Time Received by Rachelle Miller NVL 5/4/23 1520 Analyzed by Hilary Crumley NVL 5/5/23 Results Called by Faxed F Emailed Special Instructions: Date: 5/4/2023 Time: 3:19 PM Entered By: Rachelle Miller page 11 of 13 2307219 P6,5e Turn Around Time NVL ASBESTOS J 1 Hour J24 Hours J4 Days U I Hours X7 Days J 5 Days INROSTRIAi NTRIENE SERVICES CHAIN OF CUSTODY -14 Hours -13 Days ❑ 10 Days I AIORATORY - MAMAG00111 - TRAISI116 Please call for TAT less than 24 Hours Company 00 n�� ! n rr t �'1� 1 Address % t t S %.J SCc ttl.t . LJA q %%3 y Phone Project Manager —A ,ems. V p�nbd'► Cell 1 #, 4"SC 4y`13 Email Fax Project Name/Number q 30c; Project Location 4- ❑ PCM Air (NIOSH 7400) ❑ TEM (NIOSH 7402) ❑ TEM (AHERA) J TEM (EPA Level II Modified) 4 PLM (EPA 600/R-93-116) U EPA 400 Points (600/R-93-116) J EPA 1000Points (600/R-93-116) ❑ PLM Gravimetry (600/R-93-116) ❑ Asbestos in Vermiculite (EPA 600/R-04/004) U Asbestos in Sediment (EPA 1900 Points) U Asbestos Friable/Non-Friable (EPA 600/R-93/116) U Other Reporting Instructions-_� 1�- !: c n J Call ( ) J Fax I I W Email Total Number of Samples t9 .JalllFllc Iv L/C.J411tJll VII M/R 3 S305 - ACrt 4 9- Act,- o r_ C or.�r c} cs r 4l .. 5 43o - A - O - Zn / Or wC-t 6 cc 104 - a Gent - 4 �S - Ac-t, -- -_ - ---------- - - 7 8 q - Ac 9 10 q_ �y IC:kch .. 12 et 1>65 - 4 �dppM...._T ll?c�_r 13 S 4- AvLf-t �o ♦ rr� 14 G'�,O`'L - AW - { 1� M e.: n :�csu j� (bo JF is a aS - AU-c - t heu . 5 Sarnpled by k Sr 014 E„%/ Received by Analyzed by Called by Faxed/Email by - 4708 Aurora Ave N, Seattle, WA 9810:3 1 p 206.547,0100 1 t 206.634.1936 1 www.nvllabs.com page 12 of 13 PC, Sc 2 0�' 2 2307219 Tun Around Time NVL ASBESTOS J1Hour J24Hours J4Days U 2 Hours J 2 Days J 5 Days INOOSTNIA1 NTEi1ENE SERVICES CHAIN OF CUSTODY J 4 Hours J 3 Days 'J 10 Days I A10tAT01Y - MANAUMM - MINING Please call for TAT less than 24 Hours Company Project Manager Address Cell Email Phone Fax Ioject Name/Number Project Location ❑ PCM Air (NIOSH 7400) ❑ TEM (NIOSH 7402) ❑ TEM (AHERA) J TEM (EPA Level II Modified) U PLM (EPA 600/R-93-116) U EPA 400 Points (600/R-93-116) J EPA 1000Points (600/R-93-116) U PLM Gravimetry (600/R-93-116) ❑ Asbestos in Vermiculite (EPA 600/R-04/004) J Asbestos in Sediment (EPA 1900 Points) U Asbestos Friable/Non-Friable (EPA 600/R-93/116) U Other Reporting Instructions J Call t J fax J Email Total Number of Samples �oniNo v vcxnNu�n /{�K 2 � 0�-Acm -Q -CS cCt+C --Cl(,j kJc.N 3 g� S - F� Cf'l - ( 4 a .ct-'A - 19 5 8 9 10 11 12 13 14 15 wlliNaiiy void 11111C Sampled by Relinquish by Office Use Only Print Name Si gr t Company Date Time Received by z I' S2a Analyzed by Called by -- - - -- Faxed/Email by 4708 Aurora Ave N, Seattle, WA 98103 1 p 206,547.0100 I f 206.634.1936 I www.nvllabs.com page 13 of 13 NVL May 8, 2023 INDUSTRIAL HYGIENE SERVICES LABORATORY - MANAGEMENT - TRAINING Mr. Brian Johnson DH Environmental 1011 SW Klickitat Way. Suite 107 Seattle, WA 98134 Re: NVL Batch 2307220.00 Project Name/Number: 9309 Project location: City of Edmonds Dear Mr. Johnson, Enclosed please find test results for samples submitted to our laboratory for analysis. Preparation and analysis of these samples were conducted in accordance with published industry standards and methods specified on the attached analytical report. The content of this package consists of the following: -Case Narrative & Definition of Data Qualifiers -Analytical Test Results -Applicable QC Summary -Client Chain -of -Custody (CoC) -NVL Receiving Record The report is considered highly confidential and will not be released without your approval. Samples are archived for two weeks following analysis. Samples that are not retrieved by the client will be discarded after two weeks. Thank you for using our laboratory services. If you need further assistance, please contact us at 206-547-0100 or 1-888-NVLLABS. Sincerely, ZEE> Nick Ly, Technical Director Enclosure: Sample Results Phone: 206.547.0100 1 Fax: 206.634.1936 1 Toll Free: 1.888.NVL.LABS (685.5227) 4708 Aurora Avenue North I Seattle, WA 98103 Page 1 of 10 NVL Case Narrative: The following summarizes samples received on date as shown on the accompanied Chain of custody by NVL Laboratories, Inc. from DH Environmental. for Project Number 9309. Samples were logged in for PCB analysis per client request using both customer sample ID's and laboratory assigned ID's as listed on the Chain -of -Custody (CoC). All samples as received were processed and analyzed within specified turnaround time without any abnormalities and deviations that may affect the analytical results. All quality control requirements were acceptable unless stated otherwise. The conditions of all samples were acceptable at time of receipt and all samples submitted with this batch were analyzed unless stated otherwise on the CoC. Test Results are reported in Milligrams per Kilograms (Mg/Kg) for PCB samples as shown on the analytical reports. Page 2 of 10 NVL Laboratories, Inc. 4708 Aurora Ave N, Seattle, WA 98103 p 206.547.0100 1 f 206.634.1936 l www.nvllabs.com Terms % Rec B DF J A J2 J3 J4 LCS LFS NVL Definition Appendix Percent recovery. Below Reporting Limit(RL) or Limit of Quantitation(LoQ) of the instrument. Blank contamination. The recorded results is associated with a contaminated blank. Dilution Factor The reported concentration is an estimated value because something may be present in the sample that interfered with the analysis. The reported concentration is an estimated value because the laboratory control sample (LCS) is out of control limits. The reported concentration is an estimated value because the percent recovery for matrix spike is out of control limits. The reported concentration is an estimated value because the relative percent difference(RPD) for duplicate analysis is out of control limits. Percent recovery is outside of established control limits. Laboratory Control Sample Laboratory Fortified Spike Limits The upper and lower control limits for spike recoveries. LN Quality control sample is outside of control limits. This analyte was not detected in the sample. LOQ Limit of quantitation( same as RL) mg/kg Milligrams per kilogram. ND Analyte not detected or below the reporting limit of the instrument or methodology Page 3 of 10 NVL Laboratories, Inc. 4705 Aurora Ave N, Seattle, WA 95103 p 206.547.0100 1 f 206.634.1936 l www.nvllabs.com Terms PPM Definition Appendix Parts per Million. NVL QC Batch Group Quality Control Batch Group. The entity that links analytical results and supporting quality control results. R The data are not reliable due to possible contamination or loss of material during preparation or analysis. Re -sampling and reanalysis are necessary for verification. RL Reporting Limit. The minimum concentration that can be quantified under routine operating conditions. RPD Relative Percent Difference. The relative difference between duplicate results( matrix spike, blank spike, or samples duplicate) expressed as a percentage. RPD Limit The maximum RPD allowed for a set of duplicate measurements(see RPD). SMI Surrogate has matrix interference. Spike Conc. The measured concentration, in sample basis units, of a spiked sample. SURR-ND Surrogate was not detected due to matrix interference or dilution. ug/m3 Micrograms per cubic meter. ug/mL Micrograms per milliliter mg/Kg milligram per kilogram Page 4 of 10 NVL Laboratories, Inc. • 4708 Aurora Ave N, Seattle, WA 98103 17i'7 p206.547.0100 1 f206.634.1936 lwww.nvllabs.com ANALYSIS REPORT HVL Polychlorinated Biphenyls by Gas Chromatography Client DH Environmental SDG Number 2307220.00 Date Reported 05/08/2023 Project Number 9309 Location City of Edmonds Samples Received* 1 Analyzed By Shalini Patel Samples Analyzed* 1 Analysis Method 8082A Preparation Method 3546PR (PCB) . for this test only Sample Number 9309-PCB-01 Received 05/04/2023 Lab Sample ID 23044337 Matrix Material Initial Sample Size 2.1202 gm Units of Result mg/Kg, as received Aroclor-1016 0.94 < 0.94 05/05/2023 Aroclor-1221 0.94 < 0.94 05/05/2023 Aroclor-1232 0.94 < 0.94 05/05/2023 Aroclor-1242 0.94 < 0.94 05/05/2023 Aroclor-1248 0.94 < 0.94 05/05/2023 Aroclor-1254 0.94 < 0.94 05/05/2023 Aroclor-1260 0.94 < 0.94 05/05/2023 PCBs, Total 0.94 <0.94 Page 5 of 10 NVL Laboratories, Inc. 4708 Aurora Ave N, Seattle, WA 98103 p 206.547.0100 I f 206.634.1936 I www.nvllabs.com QC Batch(es): Q1967 QC Batch Method: 3546PR (PCB) Preparation Date: 05/05/2023 Blank: MBLK-2307220 Blank Analyte Result Units Aroclor-1016 ND mg/Kg Aroclor-1221 ND mg/Kg Aroclor-1232 ND mg/Kg Aroclor-1242 ND mg/Kg Aroclor-1248 ND mg/Kg Aroclor-1254 ND mg/Kg Aroclor-1260 ND mg/Kg PCBs, Total ND mg/Kg Surrogates: Tetrachloro-m-xylene Decachlorobiphenyl Lab Control Sample: LCS 1254-2307220 Blank Spike Analyte Result Units Aroclor-1254 18.7 mg/Kg Surrogates: Tetrachloro-m-xylene Decachlorobiphenyl Lab Control Sample: LCS 1016+1260-2307220 Lab Control Sample Duplicate: LCS Dup-1016+1260 Blank Spike Analyte Result Units Aroclor-1016 16.9 mg/Kg 16 Aroclor-1260 19.2 mg/Kg 17.3 Quality Control Results DF 1 1 1 1 1 1 1 1 1 1 DF 1 1 1 DF 1 1 Surrogates: Tetrachloro-m-xylene 1 Decachlorobiphenyl 1 NVL Analysis Method: 8082A Analysis Description: Polychlorinated Biphenyls by Gas Chromatography RL Control Limit Qualifiers 1 1.0 1 1.0 1 1.0 1 1.0 1 1.0 1 1.0 1 1.0 1 1.0 % Rec 81 40-140 98 40-140 Spike % Rec Conc. % Rec Limits Qualifiers 20.0 94 40-140 87 40-140 95 40-140 Spike Conc. % Rec Limits RPD RPD Limit Qualifiers 20.0 85 40-140 20.0 80 40-140 5.8 50 20.0 96 40-140 20.0 86 40-140 10.5 50 79 40-140 76 40-140 99 40-140 89 40-140 Page 6 of 10 NVL Laboratories, Inc. 4708 Aurora Ave N, Seattle, WA 98103 p 206.547.0100 I f 206.634.1936 I www.nvllabs.com Client DH Environmental Project 9309 Customer Sample ID 9309-PCB-01 9309-PCB-01 LCS 1016+1260-2307220 LCS 1016+1260-2307220 LCS 1254-2307220 LCS 1254-2307220 LCS Dup-1016+1260 LCS Dup-1016+1260 M B LK-2307220 M B LK-2307220 * Recovery outside limits Surrogate Recovery Summary Report Lab Sample ID 23044337 23044337 LCS 1016+1260-2307220 LCS 1016+1260-2307220 LCS 1254-2307220 LCS 1254-2307220 LCS Dup-1016+1260 LCS Dup-1016+1260 M B LK-2307220 M B LK-2307220 Analyte Decachlorobiphenyl Tetrachloro-m-xylene Decachlorobiphenyl Tetrachloro-m-xylene Decachlorobiphenyl Tetrachloro-m-xylene Decachlorobiphenyl Tetrachloro-m-xylene Decachlorobiphenyl Tetrachloro-m-xylene SDG Number 2307220 Recovery 98% 83% 99% 79% 95% 87% 89% 76% 98% 81% HVL Limits 40-140 40-140 40-140 40-140 40-140 40-140 40-140 40-140 40-140 40-140 Page 7 of 10 NVL Laboratories, Inc. 4708 Aurora Ave N, Seattle, WA 98103 p 206.547.0100 1 f 206.634.1936 I www.nvllabs.com INITIAL AND CONTINUING CALIBRATION VERIFICATION SDG No: 2307220 Determination: 8082 PCB Aroclors <Material> Contract: N/A 66 di HIf L Run Sample Source Analyzed Anal to True Found Unit % Rec Limits R001962 CCV1- 1016 -1260 PCB_2022-1-2 05/05/2023 Aroclor-1016 5 4.881 ug/mL 98 80-120 PCB_2022-1-2 05/05/2023 Aroclor-1260 5 4.885 ug/mL 98 80-120 CCV1- 1254 PCB_2022-1-3 05/05/2023 Aroclor-1254 5 4.669 ug/mL 93 80-120 ICV 1016-1254- 1260 PCB_2022-1-4 05/05/2023 Aroclor-1016 5 4.973 ug/mL 99 85-115 PCB_2022-1-4 05/05/2023 Aroclor-1254 5 5.61 ug/mL 112 85-115 PCB_2022-1-4 05/05/2023 Aroclor-1260 5 5.685 ug/mL 114 85-115 CCV2- 1016 -1260 PCB_2022-1-2 05/05/2023 Aroclor-1016 5 4.358 ug/mL 87 80-120 PCB_2022-1-2 05/05/2023 Aroclor-1260 5 4.263 ug/mL 85 80-120 CCV2-1254 PCB_2022-1-3 05/05/2023 Aroclor-1254 5 4.337 ug/mL 87 80-120 % Rec = Percent recovery * = Percent recovery not within control limits Page 8 of 10 FORM RSR-23.ORP(NVL) Date Printed: 5/8/2023 12:36 Page 1 of 1 ORGANICS LABORATORY SERVICES Company DH Environmental Address 1011 SW Klickitat Way Suite 107 Seattle, WA 98134 Project Manager Mr. Brian Johnson Phone (206) .934.-.4.0.43 Project Name/Number: 9309 Subcategory Quantitative analysis Item Code ORG-05 _ NVL Batch Number 2.30.72i'.V..00.._.—....._.._.— TAT 2 Days.. AH—N.o- Rush TAT Due Date 5/8/2023 Time 3:20 PM Email brian.johnson@dhenviro.com Fax (206) 930-4043 Project Location: City of Edmonds Method 8082 PCB Aroclors <Bulk> Total Number of Samples_ Rush Samples Lab ID Sample ID Description A/R 1 123044337 9309-PCB-01 A Sampled by Relinquished by nffira I lea Clniv Print Name bignacure Client Client Prinf Kama �IC1nat11rP Comoanv Date Time Date Time Received by Rachelle Miller NVL 5/4/23 1520 Analyzed by 44 L Z Results Called by ❑ Faxed ❑ Emailed !� Special -- Instructions: Entered By: Rachelle Miller Date: 5/4/2023 Time: 3:23 PM 1 of 1 4703 Aurora Ave North; Seattle, WA 98103 I p 206.547.0100 I f 206.634.1936 I www,nvllabs.com Page 9 of 10 2307220 Turn Around Time NV L PCB'S ❑ 1 Hour ❑ 2 Hours J24 Hours ❑4 Days )k? Days ❑ 5 Days INDDSTNIAL NYSIENE SERVICES CHAIN OF CUSTODY J 4 Hours J 3 Days ❑ 10 Days LANOIATDET • MANAGEMENT - TRAINING Please call for TAT less than 24 Hours Company 014 to )I (pin.+/..1C Project Manager Address LO k k SL.-N !11_' L; r r C4y Cell (20to A 3e - 4c*A3 4LNl LJA ctlk%34 Email Phone Project Name/Number 4q5U1( _.I PCB's Air J PCB Wipe Reporting Instructions t' %CC—X JC ❑ Call ( _ Total Number of Samples t Fax i Project Location C; A-,( O-c— ;A PCBs Bulk " PCB BTEX nc( ( e—SQ 14 S -to ❑ Fax .Email Sample lu uesc.npuvn PC3-o i rc..�owt i rc: 2 3 4 5 6 7 8 9 10 11 12 13 14 15 t Sampled by Relinquish by Office Use Only Print Name SI re. Date Time Received by Analyzed by Called by Faxed/Email by � MUM 4709 Aurora Ave N, Seattle, WA 98103 1 p 206.S47,0100 1 f 206.634.1936 I www.nvilabs.com Page 10 of 10 Received by Analyzed by Called by Faxed/Email by � MUM 4709 Aurora Ave N, Seattle, WA 98103 1 p 206.S47,0100 1 f 206.634.1936 I www.nvilabs.com Page 10 of 10 4709 Aurora Ave N, Seattle, WA 98103 1 p 206.S47,0100 1 f 206.634.1936 I www.nvilabs.com Page 10 of 10 Attachment 3 XRF Data XRF Data - 9309 Bowdoin Way, Edmonds, WA Instrument Serial Number Sample ID Date Location Color Component Substrate Action Level Units Concentration Pass/Fail 821477 1 5/4/2023 Interior - Home White Wall Drywall 1 mg/cm2 <LOD Pass 821477 2 5/4/2023 Interior - Home White Window Trim Wood 1 mg/cm2 0.11206 Pass 821477 3 5/4/2023 Interior - Home White Window Sill Wood 1 mg/cm2 0.16621 Pass 821477 4 5/4/2023 Interior - Home White Wall/Floor Trim Wood 1 mg/cm2 0.09025 Pass 821477 5 5/4/2023 Interior - Home Green Door Wood 1 mg/cm2 0.95463 Pass 821477 6 5/4/2023 Interior - Home Blue Wall Drywall 1 mg/cm2 0.20564 Pass 821477 7 5/4/2023 Interior - Home White Window Sill Wood 1 mg/cm2 1.23627 Fail 821477 8 5/4/2023 Interior - Home White Window Frame Wood 1 mg/cm2 1.33531 Fail 821477 9 5/4/2023 Interior - Home Gray Floor Trim Wood 1 mg/cm2 1.33763 Fail 821477 10 5/4/2023 Interior - Home Gray Floor Trim Wood 1 mg/cm2 1.09023 Fail 821477 11 5/4/2023 Interior - Home Blue Wall Drywall 1 mg/cm2 0.22167 Pass 821477 12 5/4/2023 Interior - Home White Door Jamb Wood 1 mg/cm2 1.37849 Fail 821477 13 5/4/2023 Interior - Home White Window Trim Wood 1 mg/cm2 1.22837 Fail 821477 14 5/4/2023 Interior - Home White Window Sill Wood 1 mg/cm2 0.7244 Pass 821477 15 5/4/2023 Interior - Home Blue Wall Plastic 1 mg/cm2 0.05416 Pass 821477 16 5/4/2023 Interior - Home White Window Sill Wood 1 mg/cm2 1.20962 Fail 821477 17 5/4/2023 Interior - Home White Upper Wall Trim Wood 1 mg/cm2 1.52651 Fail 821477 18 5/4/2023 Interior - Home Blue Wall Plastic 1 mg/cm2 0.45336 Pass 821477 19 5/4/2023 Interior - Home Blue Kitchen Cabinet Wood 1 mg/cm2 1.92473 Fail 821477 20 5/4/2023 Interior - Home Blue Kitchen Cabinet Wood 1 mg/cm2 0.10778 Pass 821477 21 5/4/2023 Interior - Home Blue Kitchen Cabinet Wood 1 mg/cm2 1.1979 Fail 821477 22 5/4/2023 Interior - Home White Window Sill Wood 1 mg/cm2 0.11386 Pass 821477 23 5/4/2023 Interior - Home White Window Frame Wood 1 mg/cm2 0.15564 Pass 821477 24 5/4/2023 Interior - Home White Wall Drywall 1 mg/cm2 0.05503 Pass 821477 25 5/4/2023 Interior - Home White Floor Trim Wood 1 mg/cm2 0.05274 Pass 821477 26 5/4/2023 Interior - Home White Door Trim Wood 1 mg/cm2 0.01041 Pass 821477 27 5/4/2023 Interior - Home White Window trim Wood 1 mg/cm2 0.14875 Pass 821477 28 5/4/2023 Interior - Home White Window Sill Wood 1 mg/cm2 0.03566 Pass 821477 29 5/4/2023 Interior - Home Blue/Pink Wall Drywall 1 mg/cm2 0.11483 Pass 821477 30 5/4/2023 Interior - Home White Door Trim Wood 1 mg/cm2 0.11701 Pass XRF Data - 9309 Bowdoin Way, Edmonds, WA Instrument Serial Number Sample ID Date Location Color Component Substrate Action Level Units Concentration Pass/Fail 821477 31 5/4/2023 Interior - Home White Floor Trim Wood 1 mg/cm2 0.11043 Pass 821477 32 5/4/2023 Interior - Home Peach Floor Wood 1 mg/cm2 0.16116 Pass 821477 33 5/4/2023 Interior - Home Green Floor Wood 1 mg/cm2 0.11651 Pass 821477 34 5/4/2023 Interior - Home Tan Wall Drywall 1 mg/cm2 5 Fail 821477 35 5/4/2023 Interior - Home Tan Wall Drywall 1 mg/cm2 5 Fail 821477 36 5/4/2023 Interior - Home Blue Ceiling Drywall 1 mg/cm2 0.18023 Pass 821477 37 5/4/2023 Interior - Home Blue Ceiling Drywall 1 mg/cm2 0.25781 Pass 821477 38 5/4/2023 Interior - Home Tan Ceiling Drywall 1 mg/cm2 <LOD Pass 821477 39 5/4/2023 Interior - Home Pink Window Trim Wood 1 mg/cm2 0.09702 Pass 821477 40 5/4/2023 Interior - Home Pink Window Sill Wood 1 mg/cm2 0.09553 Pass 821477 41 5/4/2023 Interior - Home Blue Wall Plastic 1 mg/cm2 0.21313 Pass 821477 42 5/4/2023 Interior - Home Pink Wall Drywall 1 mg/cm2 0.1122 Pass 821477 43 5/4/2023 Interior - Home White Door Jamb Wood 1 mg/cm2 0.07713 Pass 821477 44 Op. Error Op. Error Op. Error Op. Error Op. Error Op. Erroi Op. Error Op. Error Op. Error 821477 45 5/4/2023 Interior - Basement White Wall Concrete 1 mg/cm2 <LOD Pass 821477 46 5/4/2023 Interior - Basement White Ceiling Wood 1 mg/cm2 3.77876 Fail 821477 47 5/4/2023 Interior - Basement Blue Shelf Wood 1 mg/cm2 5 Fail 821477 48 5/4/2023 Interior - Basement Yellow Door Wood 1 mg/cm2 3.09447 Fail 821477 49 5/4/2023 Interior - Basement White Wall Concrete 1 mg/cm2 <LOD Pass 821477 50 5/4/2023 Interior - Basement White Ceiling Wood 1 mg/cm2 0.01913 Pass 821477 51 5/4/2023 Interior - Basement White Wall Concrete 1 mg/cm2 0.14724 Pass 821477 52 5/4/2023 Interior - Basement White Wall Concrete 1 mg/cm2 <LOD Pass 821477 53 5/4/2023 Interior - Basement White Window Frame Wood 1 mg/cm2 0.01959 Pass 8 a 5/4/2023 Interior - Basement White Window Cover mg/cm2 2.23233 821477 55 5/4/2023 Interior - Basement White Window Frame No 1 mg/cm2 <LOD Pass 821477 56 5/4/2023 Exterior - Home Yellow Door Trim Wood 1 mg/cm2 5 821477 57 5/4/2023 Exterior - Home Yellow Door Jamb Wood 1 mg/cm2 5 821477 58 5/4/2023 Exterior - Home Blue Wall Wood 1 mg/cm2 <LOD Pass 821477 59 5/4/2023 Exterior - Home Green Trim Wood 1 mg/cm2 4.13647 Fail 821477 60 5/4/2023 Exterior - Home White Trim Wood 1 mg/cm2 5 Fail XRF Data - 9309 Bowdoin Way, Edmonds, WA Instrument Serial Number Sample ID Date Location Color Component Substrate Action Level Units Concentration Pass/Fail 821477 61 5/4/2023 Exterior - Home Green Window Frame Wood 1 mg/cm2 5 Fail 821477 62 5/4/2023 Exterior - Home Gray Siding Wood 1 mg/cm2 4.9708 Fail 821477 63 5/4/2023 Exterior - Home Gray Shudder Plastic 1 mg/cm2 0.38345 Pass 821477 64 5/4/2023 Exterior - Home Gray Window Frame Wood 1 mg/cm2 0.76755 Pass 821477 65 5/4/2023 Exterior - Home Gray Window Sill Wood 1 mg/cm2 0.79171 Pass 821477 66 5/4/2023 Exterior - Home Gray Siding Wood 1 mg/cm2 0.20074 Pass 821477 67 5/4/2023 Exterior - Home Gray Siding Wood 1 mg/cm2 0.59989 Pass 821477 68 5/4/2023 Exterior - Home Gray Window Sill Wood 1 mg/cm2 5 Fail 821477 69 5/4/2023 Exterior - Home Gray Window Frame Wood 1 mg/cm2 1.18664 Fail 821477 70 5/4/2023 Exterior - Home Gray Window Frame Wood 1 mg/cm2 0.5293 Pass 821477 71 5/4/2023 Exterior - Home Gray Window Sill Wood 1 mg/cm2 2.21824 Fail 821477 72 5/4/2023 Exterior - Home Gray Siding Wood 1 mg/cm2 0.70159 Pass 821477 73 5/4/2023 Exterior - Home Gray Window Sill Wood 1 mg/cm2 3.5969 Fail 821477 74 5/4/2023 Exterior - Home Gray Window Frame Wood 1 mg/cm2 0.9286 Pass 821477 75 5/4/2023 Exterior - Home Green Window Sill Wood 1 mg/cm2 0.25093 Pass 821477 76 5/4/2023 Exterior - Home Green Window Frame Wood 1 mg/cm2 1.06641 Fail 821477 77 5/4/2023 Exterior - Home Gray Door Jamb Wood 1 mg/cm2 5 Fail 821477 78 5/4/2023 Exterior - Home Gray Door Trim Wood 1 mg/cm2 1.96114 Fail 821477 79 5/4/2023 Exterior - Home Gray Siding Wood 1 mg/cm2 5 Fail 821477 80 5/4/2023 Exterior - Home Gray Siding Wood 1 mg/cm2 5 Fail 821477 81 5/4/2023 Exterior - Home Gray Door Jamb Wood 1 mg/cm2 5 Fail 821477 82 5/4/2023 Exterior - Home Gray Door Trim Wood 1 mg/cm2 5 Fail 821477 83 5/4/2023 Exterior - Home Gray Siding Wood 1 mg/cm2 5 Fail 821477 84 5/4/2023 Exterior - Home Gray Window Trim Wood 1 mg/cm2 0.86644 Pass 821477 85 5/4/2023 Exterior - Home Gray Window Sill Wood 1 mg/cm2 0.63134 Pass 821477 86 5/4/2023 Outbuilding White Wall Concrete 1 mg/cm2 <LOD Pass 821477 87 5/4/2023 Outbuilding White Wall Wood 1 mg/cm2 <LOD Pass 821477 88 5/4/2023 Outbuilding Green Wall Wood 1 mg/cm2 0.37511 Pass 821477 89 5/4/2023 Outbuilding White Door Wood 1 mg/cm2 0.09819 Pass 821477 90 5/4/2023 Outbuilding White Door Wood 1 mg/cm2 0.99604 Fail XRF Data - 9309 Bowdoin Way, Edmonds, WA Instrument Serial Number Sample ID Date Location Color Component Substrate Action Level Units Concentration Pass/Fail 821477 91 5/4/2023 Outbuilding White Wall Wood 1 mg/cm2 <LOD Pass 821477 92 5/4/2023 Outside Debris White Window Frames Wood 1 mg/cm2 <LOD Pass 821477 93 5/4/2023 1 Interior - Home Red Floor I Concrete 1 mg/cm2 <LOD Pass Attachment 4 Laboratory Certifications United States Department of Commerce National Institute of Standards and Technology Certificate of Accreditation to ISO/IEC 17025:2017 NVLAP LAB CODE: 102063-0 NVL Laboratories, Inc. Seattle, WA is accredited by the National Voluntary Laboratory Accreditation Program for specific services, listed on the Scope of Accreditation, for: Asbestos Fiber Analysis This laboratory is accredited in accordance with the recognized International Standard ISO11EC 17025:2017. This accreditation demonstrates technical competence for a defined scope and the operation of a laboratory quality management system (refer to joint ISO-ILAC-IAF Communique dated January 2009). OF r 2022-10-01 through 2023-09-30 Effective Dates cy�o � For the National VoluntkyLaboratbryAccreditation Program National Voluntary Laboratory Accreditation Program SCOPE OF ACCREDITATION TO ISO/IEC 17025:2017 NVL Laboratories, Inc. 4708 Aurora Avenue N. Seattle, WA 98103 Mr. Nghiep Vi Ly Phone:206-547-0100 Fax:206-634-1936 Email: nick.l@nvllabs.com http://www.nvllabs.com ASBESTOS FIBER ANALYSIS ® A, NVLAP LAB CODE 102063-0 Bulk Asbestos Analysis Code Description 18/A01 EPA -- 40 CFR Appendix E to Subpart E of Part 763, Interim Method of the Determination of Asbestos in Bulk Insulation Samples 18/A03 EPA 600/R-93/116: Method for the Determination of Asbestos in Bulk Building Materials For the National Voluntar)yLaboratory Accreditation Program Effective 2022-10-01 through 2023-09-30 Page 1 of 1 Attachment 5 Inspector Certifications THE ASBESTOS INSTITUTE Certifies that Brian Johnson has attended and received instruction in the EPA approved course AHERA Building Inspector Refresher William T. a Director on June 30, 2022 --1 and successfully completed and passed the competenc xam. Certificate: ON-4644-2900-063022 0. S Date of Examination: 30-Jun-2022 Nr Date of Expiration: 30-Jun-2023 THE ASBESTOS INSTITUTE 20033 N. 191" Ave, Building 6, Phoenix, AZ 85027 602-864-6564 — www.theasbestosinstitute.com This training meets all requirements for asbestos certification under Toxic Substance Control Act Title 11. Approved instructor — STATE OF WASHINGTON Department of Commerce Lead -Based Paint Abatement Program Brian Gary Johnson Has fulfilled the certification requirements of WAC 365-230 and has been certified to conduct lead -based paint activities as a Risk Assessor Certification # Issuance Date Expiration Date 7170 02/23/2021 03/27/2024 THE ASBESTOS INSTITUTE Certifies that Travis Forslund has attended and received instruction in the EPA approved course AHERA Building Inspector Refresher William T. a Director on January 09, 2023 --1 and successfully completed and passed the competenc xam. Certificate: ON-4644-721-010923 0. S Date of Examination: 9-Jan-2023 qMr Date of Expiration: 09-Jan-2024 THE ASBESTOS INSTITUTE 20033 N. 191" Ave, Building 6, Phoenix, AZ 85027 602-864-6564 — www.theasbestosinstitute.com This training meets all requirements for asbestos certification under Toxic Substance Control Act Title 11. Approved instructor —