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J <br /> 4.0 EXCAVATION PROCEDURES <br /> 4.1 Excavation <br /> Petroleum hydrocarbon impacted soil was excavated from the former UST site on March <br /> 17 - 19, 1994. The excavator and operator were provided by Bob Evan's Trucking. Initially, <br /> impacted soil was stockpiled in the fenced area south of the work bays on sheets of plastic. <br /> Because of space limitations, arrangements were made to transport the soil to a ranch <br /> located at 22865 South Henry, in the City of Escalon. Bob Evan's Trucking supplied the <br /> loader and trucks for soil transport. <br /> Approximately 1,150 cubic yards of soil were removed from the former UST site during the <br /> J excavation. The location of the excavation is presented as Figure 4. As the excavation <br /> proceeded, the soil was screened for the presence of organic vapors using a PID. When <br /> organic vapors were not detected by the PID, six soil samples were collected. No <br /> groundwater was encountered during excavation activities. At the completion of sampling <br /> activities and upon approval from Ms. Linda Turkette of the PHS/EHD, the excavation was <br /> backfilled with pea-gravel and washed rock by Bob Evan's Trucking. <br /> 4.2 Excavation Soil Sampling and Analysis <br /> .J <br /> Six (6) soil samples were collected from the sidewalls and floor of the excavation on March <br /> 19, 1994 (Figure 4). All samples were collected under the direction of Ms. Turkette of the <br /> PHS/EHD. <br /> The soil samples were collected from the excavator bucket using a slide hammer core <br /> sampler loaded with two precleaned 2 x 3-inch brass sleeves. The ends of the lead sleeves <br /> were covered with aluminum sheets, capped and sealed with tape. The samples were placed <br /> in a chilled container,transported under chain-of-custody to McCampbell Analytical Inc. and <br /> analyzed for TPH as gasoline and BTE&X in accordance with EPA methods 8015m and <br /> 8020, respectively. Analytical reports and chain-of-custody are presented in Appendix C. <br /> 5.0 FINDINGS <br /> 5.1 Excavation Soil Sampling <br /> Soil was excavated to a depth of 45 feet below ground surface. One soil sample was <br /> collected from each sidewall and two samples were collected from the excavation floor. All <br /> samples collected were below detection limits for TPH as gasoline and BTE&X. The <br /> laboratory report and chain-of-custody are included in Appendix B. <br /> Geobgid Audit Service+.Ino. p <br /> 902-S�C3.—RpLID..'.Bugg. O <br />