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MASS CALCULATIONS OF <br /> 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: 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 (hrs) <br /> 25 February to 28 May 1998 <br /> using: C =2,600 + 5,200/2 µg/1= 0.0039 kg/m3 <br /> Q = 85 scfin (average) = 144 m3/hr <br /> t =485 hrs (sum of known operation) <br /> 0.0039 . 144 . 485 = 272 kg of gasoline <br /> 272 kg - 2.2046 lbs/kg = 600 lbs of gasoline <br /> to convert lbs of gasoline to gallons of gasoline, use 0.16 gal/lbs: <br /> 600 lbs of gal - 0.16 gal/lbs = 96 gallons of gasoline <br /> Time Frame..'< C ms <br /> Q t Gallons <br /> ( ) glm3 . (m ). (hours} Removed:: <br /> 02-25 to 04-28 2,600+5,200/2= 144 485 96 <br /> 0.0039 <br /> 04-28 to 06-04 5,200+5,00012= 144 654 169 <br /> 0.0051 <br /> 06-04 to 06-30 5,000+1,30012= 144 685 108 <br /> 0.0031 <br /> Total of 373 gallons of gasoline removed. <br /> i <br /> Advanced GeoEnviron mental,Inc. <br />