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• <br /> 3618 Shore Avenue <br /> Everett,WA 98203 <br /> Project Number:2019-0520 <br /> 2.0 INSPECTION METHOD <br /> Asbestos Inspection Method <br /> The NVL Labs field inspector is an Asbestos Building Inspector, certified under the requirements of the <br /> United States Environmental Protection Agency (EPA) Asbestos Hazard Emergency Response Act <br /> (AHERA) regulation 40 CFR 763, Subpart E. A copy of his certificate is provided in Appendix C. <br /> The AHERA Guidelines dictate the following: <br /> The inspector must determine homogenous areas, which are defined as an area of Thermal System <br /> Insulation, Surfacing Material, or Miscellaneous Material that is uniform in texture and color. <br /> Once homogenous areas have been determined, the inspector must determine whether or not material <br /> is friable or non-friable. Friable is defined as a material, that when dry, can be crushed, pulverized, or <br /> reduced to dust using hand pressure, and non-friable material is defined as a material, that when dry, <br /> cannot be crushed pulverized or reduced to dust using hand pressure. Materials normally defined as <br /> non-friable can become friable by definition if sufficiently damaged. <br /> Once friability has been determined, the materials suspected of containing asbestos are divided into <br /> one of three categories: Thermal System Insulation (TSI), Surfacing Material (SM), or Miscellaneous <br /> Material (MM). Generally speaking, TSI and SM are considered to be friable, with the exception of TSI <br /> where the structural integrity of the insulation is intact and the protective out wrap is undamaged. <br /> Once materials are divided into one of the categories, samples are collected in the following manner: <br /> Friable Thermal System Insulation: <br /> 1. Inspector shall collect three (3) randomly distributed samples; <br /> 2. Inspector shall collect a minimum of one sample of each TSI materials that appears to have <br /> been used as a patch, as long as the patch is less than six linear feet or six square feet; <br /> 3. Inspector shall collect in a manner sufficient, samples from areas of TSI applied to fittings, <br /> tees, and joints. <br /> Friable Surfacing Material: <br /> 1. Inspector shall collect samples in statistically random manner of surfacing materials as <br /> follows: <br /> a. Collect three bulk samples from an area believed to be homogeneous (defined as a <br /> material that appears to be the same or similar and was installed at the same time) <br /> that is 1,000 square feet or less in size; <br /> b. Collect five bulk samples from an area believed to be homogeneous that is greater <br /> than 1,000 square feet in size, but less than 5,000 square feet in size; <br /> c. Collect seven bulk samples from an area believed to be homogeneous that is greater <br /> than 5,000 square feet. <br /> NVL Laboratories, Inc. <br /> 4708 Aurora Ave N <br /> Seattle,WA 98199 <br /> Phone(206)547-0100•Fax(206)634-1936 4 <br />