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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/ r) <br /> ' t=operational period <br /> ' 30 October to 26 November 1996 <br /> using C = 760 ,ug/l = 0 000760 kg/m3 <br /> ' Q = 70 cfm = 118 9 m3/hr <br /> t = 6419 hr <br /> ' 0 000760 . 118 9 . 6419 = 58 0 kg of gasoline <br /> 58 0 kg • 2 2046 lbs/kg= 127 9 lbs of gasoline <br /> to convert lbs of gasoline to gallons of gasoline, use 0 16g al/lbs <br /> ' 127 9 gal • 0 16 gal/lbs=20 5 gallons of gasoline <br /> 26 November to 20 December 1996 <br />' using C = 695 µg/1 = 0 000695 kg/m3 <br /> Q = 70 cfm = 1189m'/hr <br /> t = 5762hr <br /> 0 000695 • 118 9 • 576 2 = 47 6 kg of gasoline <br /> = 105 0 lbs of gasoline <br />' = 16 8 gallons of gasoline <br />