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Page 4 of 4 <br /> Table 1 <br /> Groundwater Elevation and Analytical Data <br /> Farmer ARCO Seance Station#4493 <br /> 205 N Center St Stockton,CA <br /> Well Depth Groundwater Groundwater Ethyl Xylones MtBE M1BE <br /> Well Date Elevation to Water Elevation Elevation TPHg Benzene Toluene benzene (total) (8020) (8260) DO <br /> Number Sampled (ft,MSL) ft,TOC) in MSL) Change(ft) (ppb} (ppb) (ppb) (ppb} (ppb) (ppb) (ppb) _(mg/L) <br /> '=analyzed using EPA Method 8260 <br /> <or ND=below given 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 /> =Sample was reanatyzed past the EPA recommended holding time <br /> =Hydrocarbon pattern is present in the requested fuel quarildication range but does not resemble the pattern of the requested fuel <br /> '=The surrogate recovery for this sample cannot be accurately quantified due to interference form coeluting organic compounds present in the sample extract <br /> Beginning 2nd quarter 2002,an analytical data review summary is included in the text <br /> K lwpruceesU5-BP PACO10449MQuartery4t_Q7FI OM4493 GWMRi CW <br />