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i <br /> APPENDIX C <br /> Volume-Mass Calculation of Dissolved Hydrocarbons <br /> Former STOCKTON PLATING Facility <br /> Assumptions <br /> 632 South El Dorado Street, Stockton, California <br />' i n <br /> s <br /> Y A total volume of 242,490 gallons was extracted from between 18 August and 12 November <br /> 2004 based on effluent flow meter observations <br />' • Data collected from the influent pump and treat grab water samples were representative of <br /> general extracted ground water conditions <br />' One gallon contains 3 785 liter so the volume of processed water expressed as liters is <br /> IV= (242,490 gallons)(3 785 l/gal) = 917,825 liter processed water <br /> Total Petroleum Hydrocarbonsas Gasoline (TPH- <br /> p Multiplying the volume of the processed water by the cumulative average TPH-g <br /> concentration between August and November yields the approximate mass of TPH-g <br /> removed from processed water <br /> I• [9,100 µg11+1,300 µg/1+2,900 µg/1+40,000 µg/1+15,000 µg11+2,600 µg/1+17,000 µg11] <br /> / 7 sample average = 12,555 µg/1 <br /> MassTPH g = (917,825 liter) o (12,555 µg/1 TPH-g) =1.1 x 10" µg TPH-g <br /> =11,523 g TPI -g <br /> =11.5 kg TPH-g <br /> A conversion factor of 2 205 lb/kg can be used to convert TPH-g to pounds <br /> MassTPH_g= (11 5 kg TPH-g) o (2 205 lb/kg) = 25.4 lbs of TPH-g <br /> Benzene <br /> Multiplying the volume of the processed water by the cumulative average benzene <br /> concentration between August and November yields the approximate mass of benzene <br /> removed from processed water <br /> [27 µg/1+120 µg11+6,100 µg/1+2,300 µg/1+230 4g/1+2,700 µg/1] / <br /> 6 average samples = 1,910 µg/1 <br /> MassHenzene = (917,825 liter) - (1,910 µg/1 benzene) = 1.7 x 109µg Benzene <br /> = 1,753 g Benzene <br /> = 1.75 kg Benzene <br /> IA conversion factor of 2 205 lb/kg can be used to convert Benzene to pounds <br /> . Maen, = (1 75 kg Benzene) • (2 205 lb/kg) =3.865 lbs of Benzene <br /> I <br /> 1 <br />