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i <br /> Calculated Mass of TPH-d in Soil <br /> Page 2 of 2 <br /> Calculations for the outer elliptic cylinder mass <br /> 1) V,= (Tc x 20 5 ft x 15ftx45ft) - 5,443ft' = 38,02(, it3 <br /> 2) 38,029 ft3 X 100 lbs/ft' = 3,802,900 lbs soil <br /> 3) 1 8 mg/kg (TPH-d) x 1kg/1 OX106 mg x 3,802,900 lbs = 7 lbs diesel <br /> Estimated mass of total TPH-d in the UST plume = 2,049 lbs (293 gallons) <br /> r <br /> Advanced GeoEnvironmental,Inc <br />