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1 <br /> Appendix D <br /> t� VOLUME-MASS CALCULATION OF DISSOLVED HYDROCARBONS <br /> ' Chapin Brothers Investments, Inc. <br /> 1766 Monte Diablo Avenue, Stockton, California <br /> Assumptions <br /> • A total volume of 771,871 gallons was extracted from between 15 December 2003 <br /> ' (2,709,959)and 18 December 2004 (3,481,830)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 /> ' V= (771,871 gallons)(3 785 l/gal)= 2,921,531.7 liter processed water <br /> • Multiplying the volume of the processed water by the cumulative average benzene <br /> concentration (Table 4) yields the approximate mass of benzene removed from processed <br /> water <br /> annual average of 89 µg11 <br /> ' • MBenzcne = (2,921,531.71rter)(89 µg/l benzene)= 260,016,348 µg Benzene <br /> Mse,�ene as grams 260 g Benzene <br /> MB,,,,,, as kilograms 0.26 kg Benzene <br /> ' A conversion factor of 2 205 lb/kg can be used to convert Benzene to pounds <br /> MBenzene = 0 26 kg Benzene (2 205 lb/kg) = 0.57 lbs of Benzene <br /> • Multiplying the volume of the processed water by the cumulative average TPH-g <br /> concentration yields the approximate mass of TPH-g removed from processed water <br /> annual average of 4,907 µg11 <br /> MTPH g=(2,921,531.7 liter)(4,907 µg/1 TPH-g) = 1.43 x 1010 Fig TPH-g <br /> MTPH g as grams 14,350 g TPH-g <br /> MTPH g as kilograms 14.35 kg TPH-g <br /> A conversion factor of 2 205 lb/kg can be used to convert TPH-g to pounds <br /> MTPH_g= 14 35 kg TPH-g (2 205 lb/kg) =32 lbs of TPH-g <br /> A cumulative total of 6.46 lbs of Benzene and 178.7 lbs of TPH-g is estimated to have been <br /> ' extracted since ground water treatment began on 02 April 2002 <br /> 7 <br /> Advanced CeoEnvironmental,Inc <br />