Soil Staging. All excavated soils, both from within the areas of defined contamination and from areas with potential contamination, were staged on and under plastic sheeting on asphalt pavement pending waste classification sampling required by the disposal facility selected for these soils. These staging areas were conducted per specifications provided by NYSDEC in its September 25, 2008 comments to the IRM Work Plan. As requested by NYSDEC, the soil staging areas were prepared with a double thickness of 8-mil plastic sheeting; the same double layer of plastic sheeting was used to cover the soil piles. In addition, the plastic sheeting covering each soil pile was secured when soils were not being added to or otherwise handled at a given pile. The soil piles were also surrounded by hay xxxxx for erosion control. Installation of silt fencing was not feasible given that the soil staging areas were located on pavement or concrete pads. Based on the analytical data obtained to date, soils with known contamination were segregated as indicated below. These soils were placed in the soil staging areas discussed below. These staging areas were selected because they were level and paved, were proximate to the IRM locations, and were not subject to demolition equipment traffic. • Pigment-stained soils from the Blue Wing at and near locations SB-10 through SB-14A were staged separately on a concrete pad west of the Machine Shop. These soils were segregated because they contained barium, chromium, and lead concentrations higher than other soils analyzed from the site, and also believed to have likely contained hexachlorobenzene. • Other soils with elevated barium and lead concentrations were staged in an additional soil piles on asphalt pavement in the former drum storage area in AOC 9. This staging area received soils from locations 1607 and SB-16/SB-17. • Soils from the vicinity of SB-25, and from adjacent areas beneath and west of the Storage Building were staged separately directing soil of this remediation area given a cinder fill material encountered immediately below the building slab and adjoining pavement. • Soils from beneath the Powerhouse were staged on asphalt pavement at the southern end of AOC 2 based on the presence of anthropogenic materials, as discussed above. • Soils from all other locations were staged on asphalt pavement north of the former Warehouse. Soils staged in this area included those from borings B1604, B1605 and SB-28. In the IRM Work Plan, Sun Chemical...
