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2009 Asbestos Monitoring <br /> Test date: October 1, 2009 <br /> 2.0 Asbestos Sampling Procedure <br /> Sampling procedures followed the National Institute for Occupational Safety and Health <br /> (NIOSH) ASBESTOS by TEM METHOD 7402 (see Appendix D for the Air Monitoring Plan). <br /> Each sampling station consisted of a sampling pump (with a built-in rotameter), filter cassette, <br /> connective tubing, mounting materials, and a flag(Figure 3-3). The filters used in this procedure <br /> had 0.45 micrometers (µm)mixed cellulose ester membranes, 25 millimeter diameters, and were <br /> encased in conductive cassettes. The sampling pumps used in this procedure were GilA1r-5 <br /> Constant Flow Air Sampling Pumps with a flow capacity of 1 to 5 liters per minute (L/min). The <br /> built-in rotameters on the GilAir-5 pumps were calibrated using a dry reference standard flow <br /> meter. <br /> Sampling was conducted on October 1, 2009 and completed within one day. During the eight- <br /> hour sampling period, Shaw personnel visually checked the sampling pumps on an hourly basis <br /> for fluctuations in the flow rate and corrected and recorded any deviations of more than 5 percent <br /> from the initial value. After sampling was completed, each pump was retested with the <br /> calibrator to find a "real"post-test value. The pretest and post-test values were averaged over <br /> the total sample time, and the average value was used to calculate a total volume for each sample <br /> cassette. <br /> All samples were packaged, sealed, labeled, and stored in secured locations per the reference <br /> method. The samples were then shipped to the approved analytical laboratory the following <br /> business day. <br /> shaW Shaw Environmental,Inc. 2.1 <br />