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TABLE 2 <br /> Fuel Oxygenates Analytical Data <br /> ARCO Service Station No 2130 <br /> 7906 North El Dorado Street,Stockton,California <br /> Well Sample Sample TBA MtBE DIPE ETBE TAME Ethanol <br /> Number Date mg/L mg/L mg/L mg/L mg/L _ mg/L _ <br /> MS-2A 12/19/02 <200 079 <0 50 <0 50 <0 50 NA <br /> 3/6103 <20 061 <0 5 <0 5 <0 5 <100 <br /> 6/11/2003 <20 <0 5 UJ <1 0 <1 0 <1 0 <100 <br /> MS-2B 12/19/02 <200 <0 50 <0 50 <0 50 <0 50 NA <br /> 3/6/03 <20 <0 5 <0 5 <0 5 <0 5 <100 <br /> 6/11/2003 <20 <0 5 UJ <1 0 <1 0 <1 0 <100 <br /> MS-3A 12/19/02 <200 <0 50 <0 50 <0 50 <0 50 NA <br /> 3/6103 <20 09 <0 5 <0 5 <0 5 <100 <br /> 6/11/2003 <20 111 <1 0 <1 0 <1 0 <100 <br /> MS-3B 12/19/02 <200 71 <0 50 <0 50 <0 50 NA <br /> 3/6/03 <20 19 <0 5 <0 5 <0 5 <100 <br /> 6/11/2003 <20 9 4 J <1 0 <1 0 <1 0 <100 <br /> TBA=Tertiary butyl alcohol <br /> MtBE=Methyl tert-butyl ether <= Below detection limit for analytical methods used <br /> DIPE=Di-Isopropyl ether NA= Not analyzed <br /> ETBE= Ethyl tent-butyl ether " Reporting limits raised due to matrix effects and/or other factors <br /> TAME=Tert-amyl methyl ether <br /> 1,2-DCA =1,2-Dichloroethane <br /> mg/L=micrograms per liter <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 concentra <br /> N The analysis Indicates the presence of an analyte for which there is presumptive evidence to make <br /> NJ The analysis indicates the presence of an analyte that has been"tentatively Identified"and the asi <br /> numerical value represents its concentration <br /> UJ The analyte was not detected above the reported sample reporting limit However, the reported re <br /> and may or may not represent the actual limit of quantitation necessary to accurately and precisely <br /> R The sample results are rejected due to serious deficiencies in the ability to analyze the sample (I( <br /> analyte cannot be verified)or the analyte Identification has been rejected (i e , the presence of the <br /> ND Not detected above reported detection limit <br /> 6of6 <br /> K 1WprocessV5 BP ARC01)21301Quarrerlyl2 QTR 0312130 GWMR 2Q03 <br />