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Table 2 J <br /> Fuel Oxygenates Analytical Data <br /> ARCO Service Station No 2186 <br /> 3212 N California, Stockton, CA <br /> Well Date Ethanol TSA MtBE DIPE EtBE TAME 1,2-DCA I EDB I PCE Methanol <br /> Number Sampled I (pglL) (pglL) (pglL) (pglL) (pglL) (pglL) (pglL) (pglL) (pg/LComments <br /> PCE=Tetrachloroethene <br /> pglL=micrograms per liter <br /> <=below given laboratory detection limit <br /> --=not measured or not analyzed <br /> NA=Not analyzed <br /> NS=Not sampled <br /> [1]=This sample was analyzed outside of the EPA recommended holding time <br /> [2]=The reported value exceeds the calibration curve,but not the linear range <br /> =Raised MRL due to high analyte concentration requiring sample dilution <br /> [D]=MW-1 (Discrete) <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 numencal value represents its approximate concentration <br /> UJ=The analyte was not detected above the reported sample reporting limit However,the reported reporting lima is approximate and mayor 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 refected due to identification or other analytical issues <br /> ND=Not detected above reported detection limit <br /> Report Dafe May 5,2004 Page 7 of 7 <br />