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Table 1 ' <br /> Groundwater Elevation and Analytical Data <br /> ARCO Service Station No. 5450 <br /> 1617 W. Fremont Street, Stockton, CA <br /> TOC Depth to Water Level Ethyl- Total <br /> Well Date P! Elevation Water Elevation TPHg TPHd Benzene Toluene benzene Xylenes MtBE DO <br /> Number Sampled NP (feet msl) (feet bgs) (feet msl) (pg/L) (pg1L) I (pg1L) (pg1L) (Ng/L) (pg1L) (pg1L) (mg/L) Comments <br /> =not measured or analyzed <br /> '=analyzed using EPA Method 82606 <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:June 8,2004 Page 2 of 2 <br />