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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) 18 March 2013 - 23 April 2013 <br /> Assumptions: <br /> • A total volume of 89,060 gallons was extracted from wells EW-1, VW-1 C, VW-2A <br /> and VW-3A between 18 March 2013 and 23 April 2013 (based on effluent flow <br /> 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= (89,060 gallons)(3.79 1/gal) = 337,537 / processed water <br /> Multiplying the volume of the processed water by the average of the March 2013 and April <br /> 2013 TPH-g concentrations (03/13 = 25,000 pg/l, 04/13 = 8,000 pg/1; avg.= 16,500 pg/1) <br /> yields the approximate mass of TPH-g removed from processed water: <br /> MTPH-g = (337,537 /)(0.000016500 kg/1) = 5.57 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_9 = (5.57 kg TPH-g)(2.205 Ib/kg) = 12.3 lbs. TPH-g <br /> Advanced GeoEnvironmenfal,Inc. <br />