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MASS CALCULATIONS OF <br /> ,1. EXTRACTED HYDROCARBONS (Gasoline) <br /> FRANKLYN COLE PROPERTIES (Four Corners Market) <br /> 7505 West Linne Road, Tracy, California <br /> The hydrocarbon mass removed during the operating period can be calculated using the following <br /> equation with appropriate unit conversion: M=C•Q•t <br /> where: M= cumulative mass recovered (kg) <br /> C = soil gas/vapor concentration(kg/m') <br /> Q = extraction flow rate (m'/hr) <br /> t= operational period(hrs) <br /> 03 June to 29 July 1998 <br /> using: C =(1,300 +900)/2µg11=0.0011 kg/m' <br /> Q = 85 scfm (average) = 144 m3/hr <br /> t =456 hrs (sum of operation) <br /> 0.0011 • 144 . 456= 72 kg of gasoline <br /> 72 kg • 2.2046 lbs/kg= 158.7 lbs of gasoline <br /> to convertlbs of gasoline to gallons of gasoline, use 0.16 gal/lbs: <br /> 158.7 lbs of gal • 0.16 gal/lbs= 25.4 gallons of gasoline <br /> 1 <br /> ;Time Frame; C Q <br /> :. <br /> ( ours) RemovEd <br /> 03 June to 11300+900012— 144 456 25.4 <br /> 29 July 0.0011 <br /> 29 July to 01 870+90012= 144 452 20.2 <br /> September 0.00088 <br /> ' 01 September to 820+61012= 144 420 14.9 <br /> 26 October 0.0007 <br /> ITotal of 60.5 gallons of gasoline removed.The total of TPH as gasoline removedis 433.5 gallons. <br /> I <br /> Advanced GeoEnvironmental,Inc. <br /> 1 . <br />