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Pacific Mini Mart-Ground Water Extraction Volume-Mass Calculation September 2003 to May 2004 Volume of ground water discharged = 288,091 gallons) One gallon of contains 3 785 liter so the volume of processed water expressed as liters is 1,090,454 date gallons tph-d tph-g mtbe benzene ebenzne toluene xylene 3110103 1,391,899 560 2,500 250 320 24 10 310 4115103 1 520 2400 280 220 18 47 210 5-15123-03 561570 5911,300 1901270 <5 0166 <5 013 4 <5 0/<0 5 <5 01160 6124103 230 510 210 8 33 <0 5 43 I 7123103 430 460 230 260 52 75 270 8113103 250 380 270 0 78 34 <0 5 9 8 9111103 1,570,378 280 1,200 300 190 42 32 81 10/14/03 - 780 320 77 29 <0 5 69 11/18/03 410 1,800 250 300 12 85 120 12/26/03 <50 490 360 <0 5 <0 5 <0 5 146 1129104 <50 1,200 430 320 27 <0 5 53 2/25104 440 1,400 180 150 13 <5 0 100 3/15104 420 1,300 230 180 11 98 81 4128/04 <50 640 280 61 <0 5 66 51 5/17/2004 - 1,500 200 120 <0 5 27 60 Average ug/L 1,718 283 155 I Mass of MTBE = volume of processed water mass in micrograms per liter MMTBE _ ( 1,090,454 liters)(283 pg/l) = 308,598,482 pg MTBE MMTBE = 308,598,482pg/ 1,000,000 = 308g MTBE MMTBE = 0 308kg MTBE (2 205 lb/kg) = 0 68 Ibs of MTBE A conversion factor of 2 205 Ib/kg can be used to convert MTBE to pounds Mass of Benzene = volume of processed water mass in micrograms per liter I MBenzene= ( 1,090,454 liters)( 155pg/1) = 169,020,370 pg benzene MBenzene= 169,020,370pg/ 1,000,000 = 169 g benzene MBenzene= 0 169 kg benzene (2 205 lb/kg) = 0 373 lbs of benzene ' A conversion factor of 2 205 lb/kg can be used to convert benzene to pounds Mass of TPH-g = volume of processed water mass in micrograms per liter MTPH-g = (1,090,454 Irters)(1,718 pg/1) = 1,873,399,972 pg TPH-g MTPH-g = 1,873,399,972 pg11,000,000 = 1,873 4g TPH-g MTPH-q = 1 874 kg TPH- (2 205 Ib/kg) =4 13 lbs of TPH-g A conversion factor of 2 205 111kg can be used to convert TPH-g to pounds r