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Sampling was conducted on September 15, 2014, over 9 hours. During the sampling <br /> period, Del-Tech personnel visually checked the sampling pumps on an hourly basis for <br /> fluctuations in the flow rate. After sampling was completed, each pump was re- - <br /> calibrated to calculate the post-test value. The pretest and post-test values were <br /> averaged over the total sample time to calculate an average value that was used to <br /> obtain a total flow volume for each sample cassette. <br /> After sampling, the sample cassettes were removed from the sample pumps and <br /> labeled, packaged, sealed, and stored in a secure location. All samples were shipped to <br /> ATEML for analysis. A completed chain-of-custody form, detailing the sample I.D. <br /> numbers, date and time collected, analysis requested, and other project information <br /> accompanied the samples to the laboratory and is included with the laboratory <br /> analytical results in Appendix B. Each sample was analyzed for asbestos by NIOSH <br /> Method 7402 (Revision #1) using transmission electron microscopy. <br /> MONITORING RESULTS <br /> Field monitoring of meteorological data is recorded electronically at the Stockton <br /> Airport weather station located approximately 2 miles west-northwest of the Forward <br /> Landfill. During the sampling event on September 15, 2014, the mean temperature was <br /> 78 degrees with a high of 92 degrees and a low of 64 degrees. The average wind speed <br /> was 5 miles per hour (mph) out of the northwest with gusts up to 20 mph. The average <br /> MW relative humidity was 52%. <br /> The analytical results reported by ATEML for the asbestos samples are presented in <br /> Appendix B and summarized in the table below. <br /> SAMPLE AVERAGE FLOW SAMPLE IDENTIFIED ASBESTOS CALCULATED ASBESTOS <br /> STATION RATE VOLUME STRUCTURES STRUCTURE CONCENTRATION <br /> (LITERS/MINUTE) (LITERS) (CHRYS./AMPH.) (FIBERS PER CC AIR>Sum) <br /> A 2.00 1080 N D/12 0.0113 <br /> B 2.10 1134 N D/7 0.0063 <br /> C 1.93 1042 N D/4 0.0039 <br /> D 1.95 1053 ND/ND <0.0010 <br /> E 2.00 1080 N D/3 0.0028 <br /> Notes: ND—None Detected <br /> Chrys.—Chrysotile Asbestos <br /> Amph.—Amphibole Asbestos <br /> CC—Cubic Centimeter <br /> 1 um—1 micron <br /> D:\2014-0012\Asbestosrpt2SA14.docx 2 <br /> 11/17/2014,Rev.0 <br />