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Volume-Mass Calculation of Dissolved Hydrocarbons <br /> Former STOCKTON PLATING Facility <br /> 632 South El Dorado Street, Stockton, California <br /> Assumptions <br /> • A total volume of 231,216 gallons was extracted from between 11 February and 21 April 2004 based on effluent <br /> flow meter observations(note this value includes volume removed after the end of the first quarter 2004) <br /> • Data collected from the influent pump and treat grab water samples were representative of general extracted <br /> ground water conditions <br /> One gallon contains 3 785 liter so the volume of processed water expressed as liters is 1 <br /> V=(231,216 gallons)(3 785 l/gal)=875,152.5 liter processed water <br /> • Multiplying the volume of the processed water by the cumulative average benzene concentration yields the <br /> approximate mass of benzene removed from processed water <br /> February 3,400 µg/l+March 880µg/1+April 820µg/1/3 = 1,700 µg/l <br /> MH�rn,=(875,152 5 liter)(1,700 pg/l benzene)=148 x 109}ig Benzene <br /> MBen=e as grams 1,487.75 g Benzene <br /> MB,,as kilograms 1 48 kg Benzene <br /> A conversion factor of 2 205 Ib/kg can be used to convert Benzene to pounds <br /> MB,.= 1 48 kg Benzene(2 205 lb/kg)=3 28 IN of Benzene <br /> �� • Multiplying the volume of the processed water by the cumulative average TPH-g concentration yields the <br /> approximate mass of TPH-g removed from processed water <br /> February 18,000µg/1+March 5,700 µg/1+April 5,400 µg/1/3 =9,700 µg/] <br /> MTP,,=(875,152 5 liter)( 9,700 µg/1 TPH-g) = 8 48 x 10"µg TPH-g <br /> MTP,&as grams 8,488.97 g TPH-g <br /> MTp,s as lalograms 8 4889 kg TPH-g <br /> A conversion factor of 2 205 lb/kg can be used to convert TPH-g to pounds <br /> MTP,g=8 48 kg TPH-g(2 205 lb/kg)=18 7 lbs of TPH-g <br /> '0, <br /> Advanced GeoEnvironmmtal,Inc <br />