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MASS-VOLUME CALCULATIONS OF EXTRACTED GASOLINE HYDROCARBONS <br />' Assumptions <br /> • Utilizing analytical data collected from air samples (Table 3)and from field measurements collected during <br /> the SVE pilot test(Table 4),the volume of extracted gasoline hydrocarbons at the site can be approxnnated <br /> The hydrocarbon mass removed during the operating period can be calculated using the following equation <br />' M=C • Q • t <br /> where M=cumulative mass recovered(kg) <br />' C=vapor concentration(kgla) <br /> Q=extraction flow rate (m3/hr) <br /> t=operational period <br />' The average inlet'IPH-g concentration and average flow rates during each time interval was utilized for calculating the <br /> approximate mass/volume of extracted gasoline hydrocarbons <br /> 01 July to 04 October 2000 <br /> 1) The average analytical TPH-g concentration for this time interval was detenrnned to be 1,450µg11 The average <br /> flow rate was calculated at 4 1 inches of water or approximately 115 cubic feet per minute, the operational <br />'• period was eAp&A-Lo 2,090 hours �e <br /> C = 1,450 ug/l=0 001450 kg/m' <br /> Q w 4 1 inches water = 115 ft'/min <br />' t=2,090 hours <br /> Converting Q to nn'/hour yields <br />' Q=(115 ft'/mnn) •(60 nun/hour) •(0 0283168m'/ft3)= 195 4 m3/hour <br /> M=C •Q • t=(0 001450 kg/m3) •(195 4 in'/hour) • (2,090 hours)=592 2 kg of gasoline <br /> Converting kg of gasoline to pounds of gasoline yields <br />' 592 2 kg of gas • 2 2046 lbs of gas/kg of gas= 1,306 lbs of gasoline <br /> Converting pounds of gasoline to gallons of gasoline yields <br /> r _..gas1 F....n — �f•10 r.�11r..,c of <br /> 1,306 ins of gds • 0 16 galeracnEnP <br /> Of riw Ga �c.o g»-•-••� - ^� <br /> 1 <br /> • <br />