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MTBE MASS IN GROUNDWATER CALCULATIONS <br /> October 2003 <br /> Volume of impacted groundwater between 100 µg/L and 10 lig/L contours <br /> Area in square feet 6,450 ft' <br /> Avgerage thickness(from A-A' Section) 7.80 ft <br /> Volume in cubic feet 50,310 ft' <br /> Volume of water in pore spaces (40%porosity) 20,124 ft' <br />' Volume of water in pore spaces(liters) 569,912 L <br /> Concentration of MTBE in groundwater <br /> Average of 100 µg/L+ 10 µg/L 55 µg/L <br />' Calculated mass of MTBE in mg 31,345,142 µg <br /> Calculated mass of MTBE in mg 31,345 mg <br /> Calculated mass of MTBE in kg 0.03 kg <br /> Calculated mass of MTBE in pounds 0.07 lbs <br /> Volume of impacted groundwater between 10 µg/L and 1.0 gg/L contours <br /> Area in square feet 6,675 ftp <br />' Avgerage thickness(from A-A' Section) 78.7 ft <br /> Volume in cubic feet 525,323 ft' <br /> Volume of water in pore spaces (40%porosity) 210,129 ft' <br />' Volume of water in pore spaces(liters) 5,950,853 L <br /> Concentration of MTBE in groundwater <br /> Average of 10 pg/L+ 1.0 pg/L 5.50 µg/L <br /> Calculated mass of MTBE in mg 32,729,693 µg <br /> Calculated mass of MTBE in mg 32,730 mg <br /> Calculated mass of MTBE in kg 0.03 kg <br /> Calculated mass of MTBE in pounds 0.07 lbs <br /> ' PA3000_prj13761 Boyett Manteca13761C Boyett Manteca Groundwater MonitodnglReportslNFARIMass Calcs.xls <br />