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• <br /> NYL <br /> June 7,2019 <br /> INDUSTRIAL HYGIENE SERVICES <br /> LABORATORY•MANAGEMENT•TRAINING <br /> Jason Lindahl <br /> NVL Field Services Division <br /> 4708 Aurora Ave. N. <br /> Seattle,WA 98103 <br /> RE: Bulk Asbestos Fiber Analysis; NVL Batch#1911522.00 <br /> Client Project: 2019-0520 <br /> Location: 3618 Shore Ave Everett, WA 98203 <br /> Dear Mr. Lindahl, <br /> Enclosed please find test results for the 10 sample(s) submitted to our laboratory for analysis on <br /> 6/5/2019. <br /> Examination of these samples was conducted for the presence of identifiable asbestos fibers using <br /> polarized light microscopy (PLM) with dispersion staining in accordance with both EPA 600/M4-82-020, <br /> Interim Method for the Determination of Asbestos in Bulk Insulation Samples and EPA 600/R-93/116 <br /> Method for the Determination of Asbestos in Bulk Building Materials. <br /> For samples containing more than one separable layer of materials, the report will include findings for <br /> each layer (labeled Layer 1 and Layer 2, etc. for each individual layer). The asbestos concentration in <br /> the sample is determined by calibrated visual estimation. <br /> For those samples with asbestos concentrations between 1 and 10 percent based on visual estimation, <br /> the EPA recommends a procedure known as point counting (NESHAPS, 40 CFR Part 61). Point <br /> counting is a statistically more accurate means of quantification for samples with low concentrations of <br /> asbestos. <br /> The detection limit for the calibrated visual estimation is <1%, 400 point counts is 0.25% and 1000 point <br /> counts is 0.1% <br /> Samples are archived for two weeks following analysis. Samples that are not retrieved by the client are <br /> discarded after two weeks. <br /> Thank you for using our laboratory services. Please do not hesitate to call if there is anything further we <br /> can assist you with. <br /> Sincerely, <br /> Matt Macfarlane,Asbestos Lab Supervisor 114 <br /> Enc.: Sample Results Lab Code:102063-0 <br /> Phone: 206 547.0100 E Fax: 206 634.1936 I Toll Free: 1.888.NVL.LABS (685.5227) <br /> 4708 Aurora Avenue North I Seattle, WA 98103-6516 <br /> page 1 of 7 <br />