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�aCRO <br /> Shell Oil Company <br /> April 19, 1995 (9447-8613) <br /> 3.2.1 Stockpiled Soil <br />' Approximately 690 total cubic yards of soil were excavated from the former UST and <br /> product line locations, and temporarily stockpiled on-site (Figure 4) The four stockpiles were <br />' generated at different times during the reconstruction of the station and were characterized and <br /> disposed of when needed to accommodate the reconstruction schedule All excavated soils were <br /> stockpiled on and under plastic sheeting <br />' A total of 28 discrete samples were collected from the four soil stockpiles and delivered <br /> under chain-of-custody to Sequoia Analytical for analysis Each sample was analyzed for TPH <br />' as gasoline by Modified EPA Method 8015, and BTEX by EPA Method 8020 Samples were <br /> then composited two into one by the laboratory and analyzed for CAM 17 Metals Several <br /> samples were also analyzed for lgmtability and organic lead TPH as gasoline, BTEX and Total <br />' Lead analytical results are summarized in Table 3 The stockpile sample laboratory analytical <br /> reports and chain-of-custody forms are included in Appendix C <br />' All excavated soil was transported by Manley and Sons of Sacramento, California to the <br /> Forward, Inc landfill located in Stockton, California Waste manifests for the removed soil are <br /> included as Appendix E <br /> 4.0 CONCLUSIONS <br />' Four USTs and associated product piping were removed from the site Approximately 690 <br /> cubic yards of soil were removed from the former tank basin and piping trenches and hauled to <br />' the Forward Inc landfill facility Access to and excavation of soil from the former tank pit was <br /> limited by the close proximity to the station building, dispenser island canopy, and property <br /> boundaries The former tank pit was vertically excavated to a total depth of 19 feet bgs Two <br /> confirmation samples collected from the tank pit at 18 feet and 19 feet bgs contained no <br /> detectable concentrations of benzene A new double-walled fiberglass fuel containment system <br />' was installed at the site in the same excavation <br /> I <br /> 94478613 ACR 4 <br />