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<br /> (� APPENDIX D
<br /> 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 442,213 gallons was extracted from between 12 November 2004 and
<br /> 17 March 2005 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= (442,213 gallons )(3 785 1/gal) = 1,673,776 liter processed water
<br /> Total Petroleum Hydrocarbons as Gasoline TPH-
<br /> 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 /> o (1,500, 23,000, 1,100, 1,300, 33,000, 4,300, 25,000, 240, 1,700, 27,000 µg11)110
<br />' Sample average = gg/l
<br /> MassTPH. = (1,673,776 liter) o (12,800 µg11 TPH-g) =2 14 x 1010 gg TPH-g
<br /> =21,424 g TPH-g
<br /> =21.42 kg TPH-g
<br /> A conversion factor of 2 205 lb/kg can be used to convert TPH-g to pounds
<br /> MassTPH_,= (21 42 kg TPH-g) - (2 205 lb/kg) = 47 24 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 /> - (170, 3,300, 170, 3 8, 6,200, 800, 5,000, 13, 200, 4,100 �tg/l)/10
<br /> Sample average = 1,995 µgll
<br />' Ma%enzene= (1,673,776 liter) - (1,995 µg11 benzene)= 3 3 x 10'µg Benzene
<br /> = 3,340 g Benzene
<br /> = 3.34 kg Benzene
<br />' A conversion factor of 2 205 lb/kg can be used to convert Benzene to pounds
<br /> MBenzene = (3 34 kg Benzene) - (2 205 lb/kg) = 7 365 lbs of Benzene
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