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1 <br />' MASS-VOLUME CALCULATIONS OF EXTRACTED GASOLINE HYDROCARBONS <br /> CONTINUED <br /> 23 March to 31 March 1999 <br /> 2) The TPH-g concentration on 23 March 1999 was equal to 11,000 pg/l,the TPH-g concentration on 31 March <br />' 1999 was equal to 2,800µg/l The average TPH-g concentration for this tune interval is equal to 6,900µg/l <br /> The average flow rate was calculated at 109 inches of water,the operational period was equal to 172 hours <br /> of running tune <br />' C = 6,900,ug/l=0 006900 kg/m' <br /> Q = 109 inches water= 55 ft/mm <br />' t= 172 hours <br /> Converting Q to ml/hour yields Q=(55 ft'/mm)-(60 min/hour)-(0 0283168m'/ft')=93 4 in'ihour <br />' M=C • Q •t=(0 006900 kg/m')-(93 4 m'/hour)- (172 hours)= 11 I kg of gas <br /> Converting kg of gasoline to pounds of gasoline yields <br />' 111 kg of gas•2 2046 lbs of gas/kg of gas=245 lbs of gas <br /> IConverting pounds of gasoline to gallons of gasoline yields <br /> 245 lbs of gas - 0 16 gal of gas/lbs of gas =39 gallons of gasoline <br /> 31 March to 07 April 1999 <br /> 2) The TPH-g concentration on 31 March 1999 was equal to 2,800 ug/l,the TPH-g concentration on 07 April <br /> 1999 was equal to 2,600,ug/l The average TPH-g concentration for this time interval is equal to 2,700 mg/I <br />' The average flow rate was calculated at 0 48 inches of water, the operational period was equal to I72 hours <br /> of running time <br /> C = 2,700 ug/I=0 002700 kg/m' <br /> Q z 0 48 inches water = 38 ft'/min <br /> t= 172 hours <br /> IConverting Q to ml/hour yields Q=(38 ft'/min) -(60 min/hour) -(0 0283I68m'/ft')= 64 56 m'/hour <br /> M=C -Q •t=(0 002700 kg/m')-(64 56 m'/bour) • (172 hours)=30 kg of gas <br /> Converting kg of gasoline to pounds of gasoline yields <br /> 30 kg of gas-2 2046 lbs of gas/kg of gas=66 lbs of gas <br /> Converting pounds of gasoline to gallons of gasoline yields <br /> I66 lbs of gas •0 16 gal of gas/lbs of gas = 10 6 gallons of gasoline <br /> I <br />