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8.2 PreliminAry Remedial Action- Workl?lan <br /> 8.2.1 Tasks <br /> The tasks included in the preferred remedial action Alternative 7 include; <br /> • Removing existing asphalt paving; <br /> • Demolishing the maintenance shop; <br /> ' • Excavating clean overburden; <br />' • Excavating the soil i,10,000 ppm TPH; <br /> • Construct Landfarm Pad <br /> • Landfarming soil on-site; <br /> • Excavating clean backfill on-site; <br /> • Subgrading and repaving previously paved areas; and <br /> • Filling the backfill excavation with cleaned soil. <br /> The existing asphalt paving will be removed with heaving equipment (i.e., <br /> backhoe, front-end locker, and dump truck), and disposed of off--site. The <br /> amount of paving to be removed is only enough to expose the area of excavation <br /> including sloping walls. The maintenance shop will be removed, and the <br /> concrete foundation will be fractured, and disposed of off-site. <br /> Excavation of soils at the former AFPC site will be performed with <br /> standard construction equipment. Approximately 4000 cu. yds. of <br /> uncontaminated soil overburden will be removed with A backhoe and bulldozer <br /> and segregated for later replacement. This will be followed by the excavation <br /> of approximately 1100 cu. yds. of contaminated soil using a backhoe. A loader <br /> will thea either load the material into trucks or transport the material <br /> directly to the designated landfarming area, depending on the distance to the <br /> available on-site landfarm location. Soil samples will be collected from the <br /> base of the excavation to confirm that the required cleanup level has been <br /> achieved. <br /> 8-2 <br /> GGA/0209b/276a <br />