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i <br /> iSoil Vapor Extraction - volume to mass <br /> Former Mel Bokides Petroleum- Linden <br /> i8203 East Highway 26, Stockton, 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 /> ft =operational period (hrs) <br /> IThe calculation for the fourth quarters operational time period is provided as an example for the <br /> determination of volume and mass of hydrocarbons removed over the reporting period <br /> l10-05-04 to 11-17-04 <br /> using C„apor = (12,000+3,900+1,300+2,000+500 pg/l) — 5 = 3,940 micrograms per liter <br /> converted to 0 00394 kg/m3 <br /> Q = 55 scfrn (average)X 169 = 93 M3/hr <br /> t = 983 hours (sum of known operation) <br /> 0 00394 kg/m3 0 93 m3/hT 4 938 hours =360 kg gasoline <br /> 360 kg gasoline * 2 205 lbs/kg= 794 lbs gasoline <br /> to convert lbs gasoline to gallons gasoline, use 0 16 gal/lbs <br /> I794 lbs of gal e 0 16 gal/lbs = 127 gallons of gasoline <br /> r <br /> i <br />