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MASS CALCULATIONS OF <br /> • <br /> EXTRACTED HYDROCARBONS (Gasoline) <br /> Chapin Bros , Inc <br /> 1766 Monte Diablo Avenue, Stockton, California <br /> The hydrocarbon mass removed during the operating period can be calculated using the following <br /> -t <br /> equation M = C• <br /> q Q <br /> where M = cumulative mass recovered(kg) <br /> C =vapor concentration(kg/m3) <br /> Q= extraction flow rate (M3/hr) <br /> t= operational period (hrs) <br /> ' 30 September 1997 to 30 October 1997 <br /> using C =2,600 to 89012 µg11 =0 001745 kg/m3 <br /> Q = 150 cfm (average)= 88 2 m3/hr <br /> t = 720 hrs (sum of known operation) <br /> 0 001745 • 88 2 - 720 = 110 8 kg of gasoline <br /> . 110 8 kg - 2 2046 lbs/kg= 244 3 lbs of gasoline <br /> to convert lbs of gasoline to gallons of gasoline, use 0 16 gal/lbs <br /> 244 3 lbs of gal - 0 16 gal/lbs =39 gallons of gasoline <br />' <br /> Time Frame C Q t Gallons <br /> (µg/l)average to (m'/hr) (hours) Removed <br /> 1 kg/m3 <br /> 9-30-97 to 890+2,600/2= 882 720 39 <br /> 10-30-97 0001745 <br /> 10-30-97 to 890+1,10012= 882 720 22 <br /> 11-30-97 0000995 <br /> 11-30-97 to 1,100 882 360 12 <br /> 12-15-97 00011 <br /> Total of 73 <br /> allons of gasoline removed <br /> g <br /> 1 Advanced CeoEnvironmental,Inc <br />