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KLEINFELDER <br /> y File No. 20-2245-29.E01 <br /> November 1, 1996 <br /> SAMPLING PROCEDURES <br /> Prior to collecting each soil sample, the sample location was be sprayed with a <br /> fine mist of distilled water from a spray bottle to limit the release of dust particles <br /> to the air. Surface vegetation and approximately 0.5 to 1.0 inches of soil was <br /> removed with a decontaminated hand trowel or shovel. (The hand trowel or <br /> shovel will be washed with LiquinoxTM solution and rinsed with distilled water <br /> prior to collecting each sample). After the vegetation and top 0.5 to 1.0 inches of <br /> OA <br /> soil was removed, the sample location was sprayed again with distilled water and <br /> a soil sample was collected. <br /> U <br /> The soil samples were placed into sample containers for selected analysis. The <br /> sample container was sealed, labeled, and logged on a chain-of-custody record. <br /> LABORATORY ANALYSIS <br /> Samples were submitted under chain-of-custody to Forensic Analytical of <br /> Hayward, California, which is certified by the State of California to perform the <br /> analysis. Samples were analyzed for asbestos by Transmission Electron <br /> Microscopy (TEM). The TEM analyses was be performed in accordance with <br /> EPA Method 600/R-93-116. The analytical results are presented in percentage <br /> ranges of asbestos fibers. The detection limit of the analysis is approximately <br /> 0.0001%. <br /> Background Soil Samples <br /> Each of the ten background soil samples, BG-Kl through BG-K10 were <0.0001 <br /> asbestos weight percent. BG-K6 (See Plate 2) did detect chrysotile asbestos at <br /> <0.0001%. The remaining nine background samples were non-detect for asbestos <br /> types. <br /> Former Stockpile Confirmed Soil Samples <br /> A total of 14 confirmation samples were collected in the three former work areas. <br /> The four soil samples collected in Work Area #1 (1-K1 through 1-K4) were all <br /> non-detect (<0.0001 asbestos weight percent). <br /> Seven of the soil samples collected in Work Area #2 (See Plate 4) were <br /> all non <br /> detect (<0.0001 asbestos weight percent). Concentrations of chrysotitle asbestos <br /> were detected at 0.0001 weight percent in soil sample 2-K2. Chrysotile asbestos <br /> Page 3 0 5 41996, Kleinfelder, Inc. <br /> 20-2245-29.E01/A4R960249 8 f <br />