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TABLE 1 <br /> GROUNDWATER MONITORING DATA <br /> ARCO Service Station No. 5469 <br /> 130 South Wilson Way, Stockton, California I <br /> Elevation Static Water Groundwater Ethyl- Total <br /> Well Top of Casing Level Elevation TPHG Benzene Toluene benzene Xylene MTBE[l] <br /> Nu nber Date feet msl feet b s feet msl g/L [tg/L g/L1L <br /> g µglL µglL <br /> ]=mean sea level NS=Not sampled { <br /> gs=below ground surface NA=Not analyzed. <br /> laglL=micrograms per liter <=Below detection limit for the analytical methods used. <br /> [I I MT13E was analyzed using USEPA Method 8020. <br /> [2]MTBE was analyzed using USEPA Method 8260. <br /> 131 The value reported exceeds the calibration curve,but not the linear range. <br /> [4]Chromatogram Pattern: Weathered Gasoline C6-C 12. <br /> [5]The reporting limits for this sample have been raised due to the high level of a target compound. <br /> [6]The reporting limit(s)for this sample have been raised due to high levels of non-target intefere M <br /> II � <br /> I <br /> I <br /> I <br /> 5469QUARTERLYALS Delta <br /> 3 of 3 <br /> 8117101 <br />