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1 r <br /> 1 Mass-Volume Calculation of Dissolved MTBE - 25 March 2003 to 21 April 2003 <br /> FLAG CITY CHEVRON - 6421 Capital Avenue, Lodi, CA <br />' Assumptions <br />' • A total volume of 701,055 gallons was extracted from wells EW-4,EW-5,EW-7,EW-8 and <br /> EW-9 between 25 March 2003 and 21 April 2003 (based on effluent flow meter <br /> observations) <br />' • Data collected from the pump and treat influent grab ground water samples were <br /> representative of general extracted ground water conditions <br /> I <br />' One gallon of water weighs 8 337 lbs/gal at 60°F, so the mass of processed water is given by <br /> Mwatar=(701,055 gallons)(8 337 lbs /gal) = 5,844,696 lbs. processed water <br />' Multiplying the mass of the processed water by the average MTBE concentration(03-25-03=83 pg/L <br /> and 04-21-03 = 49 �ig/L, avg = 66 µg/L) yields the approximate mass of MTBE removed from <br />' processed water <br /> MMTBE = (5,844,696 lbs)(0 000000066) = 0.39 lbs MTBE <br /> A converstion factor of 0 4536 kg/lb can be used to convert pounds of MTBE to kilograms of <br /> MTBE <br /> MMTBE — 0 39 lbs MTBE (0 4536 kg/lb) = 177 g of MTBE <br /> Advanced GeoEnvironmentai,Inc <br />