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APPENDIX E <br /> GROUNDWATER PUMP-AND-TREAT VOLUME-MASS CALCULATIONS <br /> TOP FILLING STATION <br /> 101 South Wilson Way, Stockton CA <br /> 1) 19 September 2012 - 22 October 2012 <br /> Assumptions: <br /> • A total volume of 65,350 gallons was extracted from wells EW-1, VW-1 C, VW-2A <br /> and VW-3A between 19 September 2012 and 22 October 2012 (based on effluent <br /> flow meter observations). <br /> • Data collected from the pump and treat influent were representative of general <br /> extracted groundwater conditions. <br /> One gallon of water is equivalent to 3.79 liters (/), so the volume of processed water is <br /> given by: <br /> V= (65,350 gallons)(3.79 //gal) = 247,677 / processed water <br /> Multiplying the volume of the processed water by the average of the September 2012 and <br /> October 2012 TPH-g concentrations (09/12 = 30,000 pg/l, 10/12 = 11,000 pg/l; avg.= <br /> 20,500 pg/1) yields the approximate mass of TPH-g removed from processed water: <br /> MTPH_9 = (247,677 /)(0.000020500 kg//) = 5.1 kg TPH-g <br /> A conversion factor of 2.205 Ib/kg. can be used to convert kilograms of TPH-g to pounds <br /> of TPH-g: <br /> MTPH-g = (5.1 kg TPH-g)(2.205 Ib/kg) = 11.2 Ibs. TPH-g <br /> Advanced GeoEnvironmen[al,Inc. <br />