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I <br /> I Appendix D <br /> Soil-Vapor Extraction Volume-Mass Calculations <br /> Former Mel Bokides Petroleum - Linden <br /> 8203 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 /> I where M = cumulative mass recovered(kg) <br /> C = vapor concentration (kg/m') <br /> Q = extraction flow rate (m3/hr) <br /> t = operational period (hrs) <br /> The calculations for the determination of volume and mass of hydrocarbons removed over the <br /> reporting period are provided below <br /> 03-17-05 to 04-13-05 <br /> using CvaPor= (650+<50 µg/l [50])— 2 = 350 micrograms per liter <br /> converted to 0 00035 kg/m' <br /> Q = 85 scfm (average) x 169 = 143 m3/hr <br /> t = 504 hours (sum of known operation) <br /> I0 00035 kg/m' • 143 m'/hr • 504 hours = 25 2 kg gasoline <br /> 25 2 kg gasoline • 2 205 lbs/kg = 55 6 lbs gasoline <br /> to convert lbs gasoline to gallons gasoline, use 0 16 gal/lb <br /> 55 6 lbs • 0 16 gal/lb = 8 89 gallons of gasoline <br /> 05-04-05 to 06-08-05 <br /> using CVeP,,r= (120 pg/1)— 2 = 60 micrograms per liter <br /> converted to 0 00006 kg/m' <br /> Q = 63 scfm (average) X 169 = 107 m'/hr <br /> t = 768 hours (sum of known operation) <br /> 0 00006 kg/m' • 107 m'/hr - 768 hours = 4 9 kg gasoline <br /> 4 9 kg gasoline • 2 205 lbs/kg = 10 8 lbs gasoline <br /> to convert lbs gasoline to gallons gasoline, use 0 16 gal/lb <br /> 10 8 lbs • 0 16 gal/lb = 1 73 gallons of gasoline <br /> Approximately 30 1 kg(66 4 pounds), or 10 62 gallons of hydrocarbons were extracted by the SVE <br /> system between March and June 2005 Approximately 1,204 lbs, or 192 gallons, of gasoline were <br /> extracted by the SVE system since 05 October 2004 <br /> I <br /> Advanced GcoEnvironmental,Inc <br /> I <br />