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41b 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 Top of Casmg Top of Screen Level Elevation TPHG Benzene Toluene Eth lbenzene Xylene MTBE Observations <br /> MW-10 02/28/95 1438 54 24 -39 86 300 0 9 <0 5 <0 5 <0 5 NA No FP,No S <br /> MW-10 05/19/95 14 38 5232 -37 94 370 0 9 <0 5 <0 5 <0 5 NA No FP,No S <br /> MW-10 08/28/95 1438 5370 -39 32 420 12 <0 5 <0 5 <0 5 NA No FP,No S <br /> MW-10 12/07/95 1438 5261 -3823 490 0 7 <0 5 <0 5 <0 5 NA No FP,No S <br /> MW-10 02/05/96 1438 50 13 -3575 350 0 7 <0 5 <0 5 <0 5 NA No FP,No S <br /> MW-10 05/30/96 1438 47 09 -3271 350*** <6** <0 5 <0 5 <0 5 <6** No FP,No S <br /> MW-10 09/18/96 14 38 5084 -3646 510 <15** 10 <0 5 <0 5 <9** No FP,No S <br /> MW-10 11/26/96 1438 4872 -34 34 <600*** <0 5 <0 5 <0 5 <0 5 <10** No FP,No S <br /> TBLB 03/23/94 --- --- --- <10 <0 3 <0 3 <0 3 <0 5 NA NA <br /> TBLB 06/22/94 --- --- --- <10 <0 3 <0 3 <0 3 <0 5 NA NA <br /> TBLB 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 water level measured in feet below top of casing <br /> - =Well not surveyed <br /> <=Below detection Irmo for the anal}uc methods used <br /> *=Raised method reporting limn(MRL.)due to high analyte concentration requiring sample dilution <br /> **=Raised MRL 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 typical gasoline fingerprint <br /> Not sampled as well is scheduled to he abandoned <br /> =Tnp Blank <br /> 1VE=Plot evaluated FP=Free Product NA=Not Analyzed. S =Sheen 11 <br /> N\xfs',p$05\11406\010997ri As Rev 2 2113197 <br />