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TOTAL PERCENTAGE OF HYDROCARBONS REMOVED <br /> FROM SOIL AND GROUND WATER <br /> • Former Exxon Service Station No. 7-3330 <br /> 3128 West Benjamin Holt Drive <br /> Stockton, California <br /> I Total Petroleum Hydrocarbons as Gasoline <br /> Assumptions: <br /> 1) Total TPH as gasoline = TPH as gasoline excavated + TPH as gasoline remaining + TPH as gasoline in <br /> ground water. <br /> 2) TPH as gasoline remaining = TPH as gasoline remaining is soil + TPH as gasoline remaining in ground <br /> water. <br /> 3) Equation: <br /> Total TPH as Gasoline - TPH as Gasoline Remaining x 100 <br /> Total TPH as Gasoline <br />' • ((94.28 Ibs + 2.58 lbs + <0.80 lbs) - (2.58 lbs + <0.047) x 100 <br /> t 94.28 lbs + 2.58 lbs + <0.80 lbs <br /> > 97.3 percent TPH as gasoline removed <br /> II Benzene <br /> Assumptions: <br /> 1) Total benzene = Benzene excavation + Benzene remaining in soil + Benzene in ground water. <br /> 2) Benzene remaining — Benzene in soil + Benzene remaining in ground water. <br /> 3) Equation: <br /> Total Benzene - Benzene Remaining x 104 <br /> Total Benzene <br /> 1 <br />