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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 946,735 gallons was extracted from between 13 September 2005 and 24
<br /> March 2006 based on effluent flow meter observations
<br /> • Data collected from the extraction wells averaged and are generally representative of
<br /> extracted ground water conditions
<br /> One gallon contains 3 785 liter so the volume of processed water expressed as liters is
<br /> V= (946,735 gallons )(3 785 l/gal) = 3,583,392 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 13 September 2005 and 24 March 2006 yields the approximate mass
<br /> of TPH-g removed from processed water
<br /> 40
<br /> (1,300+15,000, 26,000+1,700, 1,600+23,000, 18,000+1,400, 1,600+25,000,
<br /> 2,400+24,000, 25,000 µg11)/13 samples
<br /> Sample average= 12,770 µg/1
<br /> MassTpH_g= (3,583,392 liter) • (12,770 µg/1 TPH-g) =4.6 x 1010 µg TPH-g
<br /> =45,760 g TPH-g
<br /> =45.76 kg TPH-g
<br /> A conversion factor of 2 205 lb/kg can be used to convert TPH-g to pounds
<br /> MassTpH_$= (45 76 kg TPH-g) • (2 205 lb/kg) = 100.9 lbs of TPH-g
<br /> Benzene
<br /> • Multiplying the volume of the processed water by the cumulative average benzene
<br /> concentration between 13 September 2005 and 24 March 2006 yields the approximate mass
<br /> of benzene removed from processed water
<br /> • (180+1,600, 260+3,700, 130+2,500, 110+3,400, 130+2,900, 260+3,100, 3,600µg/1)/13
<br /> Sample average= 1,682 µg/l
<br /> Mass,,,,,.,= (3,583,392 liter) • (1,682 µg/1 benzene)= 6.0 x 109µg Benzene
<br /> =6,027 g Benzene
<br /> =6.03 kg Benzene
<br /> A conversion factor of 2 205 lb/kg can be used to convert Benzene to pounds
<br /> • Mammae= (6 03 kg Benzene) • (2 205 lb/kg)= 13.3 lbs of Benzene
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