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I KLEINEELDER ranging from surface to 2 feet bgs. Samples were collected at sample locations C-7, C-8 and C-9 using a drill rig as described in Appendix B, Section 2.3 using a modified split spoon sampler. Samples were collected at depths of 3 feet bgs at these locations due to gravel and backfill material at the near surface. One soil sample was collected from each of the six locations (C-1, C-3, C-6, C-7, C-8 and C-9) and submitted for the following analyses: � I ' • Organophosphate Pesticides by EPA Method 8141 j, 4.6.3 Pond Areas Twelve shallow hand auger borings (M-1 through M 12) were advanced in the northern approximately two thirds of the site in and around former retention basins (Plate 3). A single soil sample was collected at each location at depths ranging from 0 to 6-inches bgs. The twelve discrete soil samples were composited by the laboratory into three 4-point composite samples. The composite samples were submitted for analyses for the following: p • Total Extractable Petroleum Hydrocarbons as referenced to Diesel and Motor Oil [TPH- D/MO] by EPA Method 8015M/3015; • Organochlorine Pesticides by EPA Method 8081. � I 4.6.4 Soil Stockpile Four discrete soil samples were collected from an approximately 75 yard stockpile located approximately 100 feet west of MW-3. The stockpile was reportedly generated during excavation of soil from the former UST area. The samples were collected using a hand auger and soil sampler in approximately equal areas. The soil samples were collected at depths ranging from the approximately 1 to 3 feet beneath the surface or sides of the stockpile. The four discrete soil samples were composited by the analytical laboratory into a single 4-point composite soil sample. The composite soil sample was submitted for the following analyses: f i • Total Purgeable Petroleum Hydrocarbons as referenced to Gasoline [TPH-G] by EPA Method 8015M; ! • Benzene, Toluene, Ethylbenzene, Xylenes [BTEX] by EPA Method 8260B; • Total Extractable Petroleum Hydrocarbons as referenced to Diesel and Motor Oil [TPH- D/MO] by EPA Method 8015M/3015; • Total Lead by EPA Methods. 4.6.5 Sample Handling I After collection, the soil and groundwater samples collected were labeled, logged on a chain-of- custody form, and immediately stored in an iced cooler. The samples were transported under chain-of-custody control to Kleinfelder's office and then transported by courier in a sealed container to Alpha Analytical of Sparks, Nevada for chemical analysis. Alpha Analytical is certified by the California Department of Health Services to perform the requested analyses. 36274/ST03R1919 Page 10 of 19 10 2004 Kleinfelder, Inc. January 5,2004 f