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1 <br />' Mass-Volume Calculations Of Extracted Gasoline Hydrocarbons <br /> • SIERRA LUMBER 375 West Hazelton Avenue, Stockton, CA <br />' Assumptions <br /> • Utilizing analytical data collected from air samples(Table 5)and from field measurements collected during SVE <br />' remediation (Table 6), the average concentration of extracted gasoline hydrocarbons at the site can be <br /> approximated <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(kg/m') <br /> Q=extraction flow rate(m'/hr) <br /> t=operational period(hrs) <br />' The average inlet TPH-g concentration and average flow rates during each time interval were utilized for calculating the <br /> approximate mass/volume of extracted gasoline hydrocarbons <br /> I 1. 08 June 2005 to 12 July 2005 <br /> The average analytical TPH-g concentration for this time interval was determined to be 50 ugll(06-08-05=<50 ug/l and <br /> 07-12-05=<50 ugll ,avg = 50 ug(L) The average flow rates during this time was calculated at 0 4 inches of water or <br /> approximately 34 cubic feet per minute(table 6),the operational period was equal to 816 hours of running time <br /> C = 50 ugl1=0 000050 kg/m' <br /> Q = 0 4 inches water= 34 Orcin <br /> t=816 hours(34 days operation) <br /> Converting Q to m'/hour yields <br /> Q=(34 ft/min)•(60 min/hour)•(0 0283168m31$;)=57 77 m3/hour <br /> IM=C• Q• t=(0 000050 kg/m3)•(57 77 m3/hour)•(816 hours)=2 36 kg of gasoline <br />' Converting kg of gasoline to pounds of gasoline yields <br /> 2 36 kg of gas•2 2046 lbs of gas/kg of gas=5 20 lbs of gasoline <br /> I5 20 lbs gas/34 days=0 15 lbs/day <br /> Converting pounds of gasoline to gallons of gasoline yields <br /> 3 48 lbs of gas •0 16 gal of gas/lbs of gas = 0.83 gallon of gasoline <br /> I <br />