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TABLE 3 Page 4 of 4 <br /> GROUNDWATER EXTRACTION-MASS REMOVAL DATA <br /> SHELL STOCKTON TERMINAL <br /> 3515 NAVY DRIVE,STOCKTON,CALIFORNIA <br /> Estimated Cumulative Cumulative Cumulative <br /> Baker Tank Cumulative Period System TPHg TPHg TPHg Benzene Benzene Benzene MTBE MTBE MTBE <br /> Totalizer Totalizer Volume Flow Rate Sample Concentration Removed Removed Concentration Removed Removed Concentration Removed Removed <br /> Date (gal) (gal) (gal) (gpm) Date (µg1L) (pounds) (pounds) (µg1L.) (pounds) (pounds) (µ91L) (pounds) (pounds) <br /> 11/03/10 113,742 639,796 1,882 0.08 08/31/10 26,000 0.408 362.8 2,400 0.038 51.4 21,000 0.330 158.2 <br /> 11/15/10 113,760 639,814 1s 0.00 08/31/10 26,000 0.004 362.8 2,400 0.000 51.4 21,000 0.003 158.2 <br /> 12/10/10 118,318 644,372 4,558 0.13 08/31/10 26,000 0.989 363.8 2,400 0.091 51.5 21,000 0.799 159.0 <br /> 12/20/10 118,323 644,377 5 0.00 08/31/10 26,000 0.001 363.8 2,400 0.000 51.5 21,000 0.001 159.0 <br /> Total Gallons Extracted: 11,543,933 Total Pounds Removed: 363.8 Total Pounds Removed: 51.5 Total Pounds Removed: 159.0 <br /> Total Gallons Removed: 59.7 Total Gallons Removed: 7.01 Total Gallons Removed: 25.8 <br /> Abbreviations&Notes: <br /> TPHg=Total purgeable hydrocarbons as gasoline <br /> MTBE=Methyl-tertiary butyl ether <br /> TBA-Tertiary-butyl alcohol <br /> µg/L=Micrograms per liter <br /> L=Liter <br /> gal=Gallon <br /> gpm=gallons per minute <br /> NA=Not available <br /> Extracted groundwater transported to Martinez Refinery Corporation for disposal. <br /> TPHg,Benzene,MTBE,and TBA are analyzed by EPA Method 8260B. <br /> Mass removed based on the formula:volume extracted(gal)x Concentration(mg/L)x(g/106mg)x(pound/453.6g)x(3.785 L/gal) <br /> When constituents are not detected,the concentration is assumed to be equal to half the detection limit in subsequent calculations. <br /> Volume removal data based on the formula:mass(pounds)x(density)" (cc/g)x 453.6(g/pound)x(L/1000 cc)x(gal/3785 L) <br /> Period operational flow rate based on the formula:(current volume reading-last volume reading(gal))/((current date-last date(days))x(1440(hr/day))) <br /> Density inputs:TPHg=0.73 g/cc,Benzene=0.88 g/cc,TBA=0.78 g/cc,MTBE=0.74 g/cc <br /> New flow meter installed on September 13,2007. Ending totalizer data not collected,therefore flowrate estimated to be 0.28 between August 30,2007 and September 13,2007. <br /> New flow meter installed on June 24,2008. Ending totalizer 131523;new totalizer started on 54755. <br /> CRA 241 729(28) <br />