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MASS CALCULATIONS OF EXTRACTED HYDROCARBONS (Gasoline) <br /> i Ripon Farm Services <br />' 22871 South Highway 99, Ripon, CaIiforma <br />' The hydrocarbon mass removed during the operating period can be calculated using the equation <br /> M = C•Q•t , <br />' where M= cumulative mass recovered (kg) <br /> ( g) <br /> C=vapor concentration(kg/m3) <br /> Q= extraction flow rate (m3/hr) <br /> t= operational period (hrs) <br />' The calculation for the first time period is provided as an example for the determination of mass/ <br /> volume of hydrocarbons removed over the reporting period <br /> J <br />' 09-19-02 to 10-21-02 <br /> using C = (430+120 µg/1) —2 =0 000275 kg/m3 <br />' Q— 87 scfm (average) =147 m'/hr <br /> t = 771 hours (sum of known operation) <br /> 0 000275 kg/m' • 147 m'/hr • 771 hours = 31 kg gasoline <br />' . 31 kg gasoline - 2 2046 lbs/kg= 68 7 lbs gasoline <br /> to convert lbs gasoline to gallons gasoline, use 0 16 gal/lbs <br /> 68 7 lbs of gal • 0 16 gal/lbs = 10 9 gallons of gasoline <br /> 10-21-02 to 12-12-02 <br /> using C = (120+77+130 µg/1) —3 =0 000109 kg/m3 <br /> Q = 90 scfm (average) =152 m3/hr --1 <br /> t =422 hours (sum of known operation) <br /> 0 000109 kg/m' • 152 m3/hr • 422 hours=7 kg gasoline <br /> 7 kg gasoline • 2 2046 lbs/kg= 15 4 lbs gasoline r- <br />' to convert lbs gasoline to gallons gasoline, use 0 16 gal/lbs <br /> 15 4 lbs of gal • 0 16 gal/lbs =2 4 gallons of gasoline <br /> A total of 38 kg, 84 lbs or 13 3 gallons hydrocarbons as gasoline was removed between <br /> 19 September and 12 December 2002 <br /> 1 <br /> • <br />' Advanced GeoEnvironmental,toe <br />