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Page 3of3 <br /> Table 1 <br /> Groundwater Elevation and Analytical Data <br /> Former ARCO Service Station#4493 <br /> 205 N Center St,Stockton,CA <br /> Well Depth Groundwater Groundwater Ethyl Xylenes MtSE MtBE <br /> Well Date Elevaton to Water Elevation Elevation TPHg Benzene Toluene benzene (total) (8020) (8260) DO <br /> Number Sampled h MSL ft,TOC ft MSL Change f4 b b b b b b b m /L <br /> Notes <br /> TPHg=Total petroleum hydrocarbons as gasoline <br /> MtBE=Methyt tent butyl ether <br /> 00=Dissolved oxygen <br /> it=feet <br /> MSL=mean sea level <br /> TOC=lop ol casing <br /> ppb=pans per billion <br /> mg/L=milligrams per liter <br /> PMP=purged/not purged <br /> =analyzed using EPA Method 8260 <br /> <or NO=below gwen laboratory detection limit <br /> 8020=Analyzed by EPA Method 8020 <br /> 8260=Analyzed by EPA Method 8260 <br /> NS=Not Surveyed <br /> not measured/analyzed or not applicable <br /> r=Sample was reanalyzed past the EPA recommended holding time <br /> =Hydrocarbon pattern is present in the requested fuel quantification range but does not resemble the pattern of the requested fuel <br /> 4 The surrogate recovery for this sample cannot be accurately quantified due to interference form coeluting organic compounds present in the sample extract <br /> _fie inning 2nd quarter 2002 an analytical data review summary is Included in the text <br /> k Wb BP nRC0%044a3QUWI*e LQTR 0ZTabre 1_2_3 <br />