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i <br /> TOTAL REMAINING TPH MASS CALCULATIONS <br /> Given a totalP resumed soil volume of 1400 cubic yards containing TPH impacts (from calculation of <br /> cylindrical volume with 20-foot radius and 30-foot depth), the total mass of impacted soil (MT) is defined <br /> by <br /> MT = 1400 yd' • 765000 cm3/yd3 • 1 7 glom' • 1 kg/10008 <br /> I <br /> MT — 1 ,821,000 kg soil <br /> Given hydrocarbon impacts at 1.3 TPH mg/kg,the total mass of remaining hydrocarbons adsorbed to soil <br /> I (M.G s) is defined by• <br /> MHG s = 1 ,821 ,000 kg soil • 1 3 mg TPH/kg soil — 2.4 kg (5 3 lbs) TPH mass in soil <br /> Gwen a total presumed impacted soil volume of 1400 cubic yards and a volumetric water content of soil <br /> of 0 15 (15°x), the total volume of impacted soil pore water (VT) is defined by <br /> f <br /> VT = 1400 yd3 • 0.15 = 210 yd <br /> r� 210 yd' 764 5 liter/yd' - 160,500 liters of soli pore water <br /> Gwen hydrocarbon impacts at 0 364 mg TPH/liter water, the total mass of remaining hydrocarbons in <br /> the pore water (MHcw) is defined by• <br /> MNGW 160,5001iter water • 0 364 mg TPH/liter water = 0 06 kg (0 13 lbs) TPH mass in water <br /> ITotal TPH Mass Remaining is: <br /> 5 3 lbs (in soil) + 0 13 lbs (;n pore water) - 5 43 lbs <br /> I <br /> I <br />