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ppm total petroleum hydrocarbons as gasoline (TPHg) respectively Soil samples analyzed for total <br /> lead were below the laboratory detection limit Approximately 150 cubic yards of soil was removed <br /> from the UST and pump island excavation Soil samples collected from the excavated soil after it was <br /> stockpiled indicated it contained levels of petroleum hydrocarbons up to 3,700 ppm TPHg and 0 98 <br /> ppm benzene This soil was returned to the excavation as backfill to be remediated concurrently with <br /> the rest of the site <br /> In September 1992, a prelinunary site assessment was conducted by Canome Environmental to further <br /> evaluate the subsurface conditions at the site This investigation involved drilling a total of nine soil <br /> bonngs Three of the borings were completed as 4-inch diameter vapor extraction wells (W-1, W-2, <br /> and W-3) and three of the borings were completed as 2-inch diameter vapor-inlet wells (W-4, W-5, and <br /> W-b) Approximate locations of these bonngs and wells are shown on Figure 2 Results appeared <br /> to define the extent of soil contamination and indicated that petroleum hydrocarbons exist primarily <br /> in the area of the former tanks to a depth of 3 0 to 3 5 feet below ground surface (bgs) The data for <br /> this investigation is contained in the document, Site Assessment Work Plan dated July 24, 1992, <br /> prepared by Canome <br /> In December 1993, an additional Site assessment was conducted by SECOR to verify the extent of <br /> petroleum hydrocarbons in soil at the site This investigation involved the drilling of five soil borings, <br /> and the construction of two vapor extraction/inlet wells (W-7, W-8) During this investigation <br /> unanticipated impacts were found to exist outside of the fonner tank bed The data for this assessment <br /> is found in the document, Environmental Assessment Report, dated June 14, 1994 <br /> In December 1994, an additional Site assessment was conducted by SECOR to further evaluate the <br /> extent of petroleum hydrocarbons in soil and groundwater at the site This investigation involved the <br /> drilling of five soil bonngs, and the construction of four groundwater monitor wells (MW-1, MW-2, <br /> MW-3, and MW-4) The data for this assessment is contained in the document, Environmental <br /> Investigation Report, dated May 4, 1995 <br />' g39H2OCXVJpL 2 SECIA <br /> 000 <br /> N7-001.07 l�rg im <br />