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ESTEWATION OF PETROLEUM HYDROCARBONS <br /> EXISTING IN SOIL AFTER REMEDIATION-Continued <br /> iBeacon Station No 695 <br /> 900 South Cherokee Lane <br /> Lodi, California <br /> U. Estimation of Benzene existing in sod after remediation <br /> Assumption: <br /> 1 For soil samples that contained TPH as gasoline concentrations with benzene <br /> concentrations below the detection limit, the detection limit for benzene was used for the <br /> calculation <br /> (A) Layer A (0-9 feet) <br /> Note Soil samples were not collected from tins interval <br /> (B) Layer B (10-19 feet) <br /> 1 Pounds of benzene (Volume 1) <br /> C = 0 005 vom <br /> = n (20) (20� (10) 110 Ibs) (0 005 ppm <br /> • ft3 1x106 <br /> 0 007 lbs <br /> 2 Pounds of TPH as gasoline (Volume 2) <br /> C = 0 005 DDm <br /> _ (25) (25) (10) 110 lbs 0.005 ppm <br /> fit3 1 z 106 <br /> 0 011 lbs <br /> Total pounds of TPH as gasoline (Layer B) <br /> 0 007 lbs + 0 011 lbs = 0 018 lbs <br /> • <br /> MS002 915 <br />