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SOIL MANAGEMENT PLAN FOR TANK REPLACEMENT <br /> 620 West Charter Way, Stockton, Caltfornta <br />' Delta Project No 40-8&586 <br /> Page 6 <br /> 1 Soils generated from this excavation will be stockpiled on site until analytical tests have been completed <br /> by the mobile laboratory on site (on 12-hour turnaround) Following completion of laboratory analyses, <br />' the soil disposal will be at an appropriate landfill facility as discussed m Section 3 3 <br />' 3.2 Excavation and Removal of Old Tanks and Product Lines <br /> Excavation and removal of the old tanks and product lines are expected to generate approximately 725 <br />' cubic yards of soil The dimensions of the old tank excavation will be approximately 31 x 32 feet in plan <br /> and 17 feet deep Soils generated during excavation will be stockpiled on site, pending laboratory results <br />' The appropriate disposal destination will then be determined, based on laboratory data <br /> Seven soil samples will be collected from the base of the two tank excavations (fuel tank and waste oil <br /> tank excavations) One soil sample will be collected for each 20 lineal feet of product line trenches A <br /> composite sample from the soil stockpile will be submitted to the laboratory to characterize the average <br /> hydrocarbon concentrations in these soils These samples will be analyzed according to the Tri-Regional <br /> Recommendations described in Section 12 (Table 3) <br />' FolIowin excavation and sampling activities, the former tank excavations and product line trenches will <br /> $ P � <br />' be backfilled with clean, imported fill material and compacted to 95 percent proctor density <br />