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3.5 Laboratory Analytical Results <br /> Bulk samples were analyzed by Hygeia Laboratories located in Sierra Madre, California, using <br /> Polarized Light Microscopy (PLM) according to EPA method 600/M4-82-020 or 600/R- <br /> 93/116. This laboratory participates in the NVLAP,a quality assurance program for PLM,and <br /> is accredited by the National Institute of Standards and Technology(MST),and The American <br /> Industrial Hygiene Association(AIHA). <br /> Any material that contains greater than one-tenth of one percent asbestos is considered an <br /> ACM and must be handled according to OSHA, EPA, and applicable state and local <br /> regulations. <br /> For friable materials, when the amount of asbestos in the sample material is reported as None- <br /> Detected" by PLM analysis, no further verification of the sample results by Point Counting <br /> Methodology is recommended. <br /> For friable materials, when the amount of asbestos in the sample material is reported as-Trace <br /> Asbestos Detected" or less than 10 percent asbestos by PLM analysis, the client may either <br /> assume the amount to be greater than one-tenth of one percent and treat the material as ACM <br /> or require further verification of the amount by Point Counting Methods. If the result obtained <br /> by the Point Counting Method is different from the result obtained by PLM analysis, the Point <br /> Count Method result will be used. <br /> For non-friable materials, when the amount of asbestos in the sample material is reported at <br /> greater than one-tenth of one percent by PLM analysis, no further verification of the sample <br /> results by alternative methods of identification such as Transmission Electron Microscopy <br /> (TEM)-Chatfield is recommended. <br /> For non-friable materials, when the amount of asbestos in the sample material is reported as <br /> "Non-Detect" or "Trace Asbestos" by PLM analysis, due to the difficulty in analyzing "small, <br /> 12 <br />