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Table 2 <br /> Fuel Oxygenates Analytical Data <br /> ARCO Service Station No 2130 <br /> 7906 N EL Dorado Street, Stockton, CA <br /> TBA=Tertiary butyl alcohol <br /> MtBE=Methyl tert-butyl ether <br /> DIPS=Di-isopropyl ether <br /> EtBE=Ethyl tert-butyl ether <br /> TAME:Tert-amyl methyl ether <br /> 1,2-DCA=1,2-Dichloroethane <br /> yg/L=micrograms per liter <br /> a=Below detection limit for analytical methods used <br /> —=not measured or analyzed <br /> NA=Not analyzed <br /> .Reporting limits raised due to matrix effects and/or other factors <br /> Data Qualifier Definitions <br /> U=The analyte was analyzed for,but was not detected above the sample reporting limit <br /> J=The analyte was positively identified,the associated numerical value is the approximate concentration of the analyte in the sample <br /> N=The analysis indicates the presence of an analyte for which there is presumptive evidence to make a tentative identification <br /> NJ=The analysis indicates the presence of an analyte that has been tentatively identified and the associated numerical value represents its approximate concentration <br /> UJ=The analyte was not detected above the reported sample reporting limit However,the reported reporting limit is approximate and may or may not represent the actual limit of quantitation <br /> necessary to accurately and precisely measure the analyte in the sample <br /> R=The sample results are rejected due to identification or other analytical issues <br /> ND=Not detected above reported detection limit <br /> Page 12 of 12 <br /> Report Date October 25,2004 <br />