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TA 1 <br /> Groundwater Monitoring Data <br /> ARCO Service Station No 2130 <br /> 7906 North EI Dorado Street, Stockton, California <br /> Page 7 of 7 <br /> Well Elevation Static Water Groundwater Total <br /> Number Date To of Casing Top of Screen Level Elevation TPHG Benzene Toluene Eth lbenzene X lene MTBE Observations <br /> MW-10 09/18/96 1438 5084 -3646 510 <15** 10 <0 5 <0 5 <9** No FP,No S <br /> TISLB 03/23/93 - - --- <10 <0 3 <0 3 <0 3 <0 5 NA NA <br /> TBLII 06/22/94 --- --- --- <10 <0 i <0 3 <0 3 <0 5 NA NA <br /> 1`111.11 09/29/94 --- --- --- <50 <0 5 <0 5 <0 5 <0 5 NA NA <br /> TBLB 12/01/94 --- --- --- <50 <0 5 <0 5 <0 5 <0 5 NA NA <br /> TBLB 02/28/95 --- --- --- <50 <0 5 <0 5 <0 5 <0 5 NA NA <br /> Measurements in feet <br /> Datum in mean sea level <br /> Static eater level measured in feet below top of casing <br /> ---�Well not surveyed <br /> <=Below detection limit for the anal}tic methods used <br /> *=Raised method reporting limit(MRL)due to high analyte concentration requiring sample dilution <br /> **=Raised NfRL due to matrix interference <br /> ***=The sample contains discrete non-fuel components eluting in the gasoline range quantified as gasoline The <br /> chromatogram does not match the q plcal gasoline fingerprint <br /> 'I <br /> Not sampled,as well is scheduled to be abandoned <br /> TB=Trip Blank <br /> NE=Not evaluated FP=Free Product NA=Not Anal)zed S =Sheen <br /> N\xkW05\11406\]N)996M1 xis Rtv 2 Iri/�Srrr, <br />