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SOIL VAPOR EXTRACTION SYSTEM INFLUENT MASS BALANCE <br /> Assumptions: <br /> Constant influent flow rate of 215 cubic feet per minute (CF/M ) <br /> Average TPH-g concentration - 205 micrograms per liter(µg/1) <br /> Calculations: <br /> 215 CF/M x 1,440 minutes per day=309,600 cubic feet per day(CF/D) <br /> (205 µg/1) x(2.2 x 10-'pounds/µg) x(1 liter/0.035 cubic feet) _ <br /> 1.28 x 10-5 pounds per cubic feet (lbs/CF) <br /> Therefore, <br /> (1.28 x 10' lbs/CF) /(309,600 CF/D) =3.96lbs/day <br /> Adv¢ ced GMEnvtronmenta4 Inc. <br />