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• • s <br /> Table 2 <br /> Fuel Oxygenates Analytical Data <br /> ARCO Service Station No. 548 <br /> 1612 W. Hammer Lane, Stockton, CA <br /> Well Date I Ethanol TBA MtBE DIPS I EtBE TAME I 1,2-DCA EDB PCE Methanol <br /> Number sampled WglL) (pglL) (pglL) (pglL) (pg1L) (pglL) (pglL) (pg1L) (pg1L) WglL) Comments <br /> this hatch,this should be considered in evaluating the data for its intended purpose. <br /> [3]The sample was diluted due to the presence of high levels of non-target analytes resulting in elevated reporting limits. <br /> [4]The sample was diluted due to the presence of high levels of target analytes resulting in elevated reporting limits. <br /> Beginning third quarter 2002,the data quality analyses are presented in the text. <br /> 3/11/2004-VW-5S and VW-5D data rejected due to a discrepency during sampling. <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 /> Report Date:May 17, 2004 Page 6 of 6 <br />