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MASS CALCULATION: <br /> VOLUME OF EXTRACTED HYDROCARBONS (Gasoline) <br />' Art& Artists <br /> 204 East Lodi Avenue, Lodi, California <br /> The hydrocarbon mass removed during the operating period can be calculated using the following <br /> equation M = C•Q•t <br /> where M= cumulative mass recovered (kg) <br /> C =vapor concentration (kg/m3) <br /> Q = extraction flow rate (m3/hr) <br /> t = operational period <br /> 29 February to 26 March 1996 <br /> using C = 4,775 µg/1 =0 004775 kg/m3 <br /> Q = 70 cfm= 118 9 m3/hr <br />' t = 623 hr <br /> 0 004775 • 118 9 • 623 = 3 54 kg of gasoline <br /> 354 k • 2 2046 lbs/kg = 780 lbs of gasoline <br /> g g <br /> r� to convert lbs of gasoline to gallons of gasoline, use 0 lb gal/lbs <br />' 780 gal • 0 16 gal/lbs = 125 gallons of gasoline <br /> 26 March to 30 April 1996 <br /> using C = 2,225 µg/1 = 0 002225 kg/m3 <br /> Q = 70cfm = 1189m3/hr <br /> t = 7497hr <br /> 0 002225 • 118 9 • 749 7 = 198 kg of gasoline <br /> 198 kg • 2 2046 lbs/kg = 437 lbs of gasoline <br /> ' to convert lbs of gasoline to gallons of gasoline, use 0 16 gal/lbs <br /> 437 lbs • 0 16 galllbs= 70 gallons of gasoline <br /> a <br /> 1 <br />