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i <br /> IMass-Volume Calculation of Dissolved Hydrocarbons <br /> PACIFIC MINI MART <br />' 4511. Pacific Avenue, Stockton, California <br /> Assumptions <br /> A total volume of 267,904 a <br /> 6 , 04 g9 llons was extracted from between 19 August and 31 December 2002 <br /> based on effluent flow meter observations Data collected from the influent pump and treat grab <br /> water samples were representative of general extracted ground water conditions <br /> One gallon of contains 3 785 liter so the volume of processed water expressed as liters is <br /> V= (267,904 gallons)(3 785 l/gal) = 1,014,016 liter processed water <br /> IMultiplying the volume of the processed water by the cumulative average MTBE concentration <br /> (270µg11,380µg/l,230µg/l, 190 and 240 µg/l)yields the approximate mass ofMTBEremoved from <br /> I processed water <br /> MMTBE = (1,014,016 liter)(262 µg/1) —266,023,272 gg MTBE <br /> M.,13, as grams 266 g MTBE <br /> IMM1BF as kilograms 0.27 kg MTBE <br /> A conversion factor of 2 205 lb/kg can be used to convert MTBE to pounds <br /> MMTBE = 0 27 kg MTBE (2 205 lb/kg) = 0.59 lbs of MTBE <br /> Multiplyingthe volume of the processed water b the cumulative average benzene concentration <br /> P Y g <br /> (250µg/1, 140µg/1,280µg/1, 130 pg/land 220µg/1)yields the approximate mass of benzene removed <br /> from processed water <br /> M Beene — (1,014,016 liter)( 204 µg/1 average) =207,132,624 µg benzene <br /> I M Beene as grams 206 g benzene <br /> M Benzene as kilograms 0.21 kg benzene <br /> A conversion factor of 2 205 lb/kg can be used to convert benzene to pounds <br /> IM benzene = 0 21 kg benzene(2 205 lb/kg) = 0.46 lbs of benzene <br /> Multiplying the volume of the processed water by the cumulative average TPH-g concentration <br /> I (2,100µg11, 1,300 µg/1, 2,600 µg/l, 990 µg/1 and 1,100 µg/1) yields the approximate mass ofTPH-g <br /> removed from processed water <br /> MTPB g = (1,014,0161iter)(1,618 gg/1) = 1.64x109 µg TPH-g <br /> MTFa_g as grams 1,643 g TPH-g <br /> M,,,,-, as ki tograms 1.64 kg TPH-g <br /> A conversion factor of 2 205 lb/kg can be used to convert TPH-g to pounds <br /> MTPH g = 1 64 kg TPH-g (2 205 lb/kg) =3.61 lbs of TPH-g <br /> IAdvanced GeoEnvironmental,Inc <br /> I <br />