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COMPUTATION SHEET <br /> PROJECT TITLE ARCO Service Station 2076 PROJECT NO 20805-144 004 <br /> DESCRIPTION Mass of Petroleum Hydrocarbons in Soil SHEET 3 OF 5 <br /> PREP BY DATE CHKD BY DATE <br /> Mass of TPHG in the interval between 6 and 14 eet below ground surface <br /> Mass of TPHG = Soil Vol Density Ib TPHG/Ib soil <br /> (ft3) (pct) <br /> 10,000 ppm contour line <br /> Mass TPHG = 0 100 001 <br /> Mass TPHG = 0 lbs within the 10,000 ppm contour line <br /> 1,000 ppm contour line <br /> Mass TPHG = 0 100 0 001 <br /> Mass TPHG = 00 lbs within the 1,000 ppm contour line <br /> 100 ppm contour line <br /> Mass TPHG = 378 100 00001 <br /> Mass TPHG = 38 lbs within the 100 ppm contour line <br /> 10 ppm contour line <br /> Mass TPHG = 5820 100 000001 <br /> Mass TPHG = 58 lbs within the 10 ppm contour line <br /> 1 ppm contour line <br /> Mass TPHG = 4824 100 0000001 <br /> Mass TPHG = 048 Ibs within the 1 ppm contour line <br /> Total Mass TPHG = 10 lbs <br /> 6to14ft <br /> H,/exceldat/arco/2076calc As <br />