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"mom I= �t _ <br /> • <br /> TABLE 2 <br /> GROUNDWATER MONITORING DATA <br /> ARCO Service Station No 2130 <br /> 7906 North EI Dorado Street,Stockton,California <br /> Elevation Static Water Groundwater Ethyl- Total <br /> Well Top of Casing Top of Screen Level Elevation TPHg Benzene Toluene benzene Xylene MtBE <br /> Number Date (feet ms]) (ft btc) (ft btc) (feet msl) µglL µgl µglL µg/L µg/L µg/L Observations <br /> btc=below top of casing <br /> ms1=mean sea level NE_-Northeast <br /> bgs=below ground surface NA=Not analyzed NE=Not evaluated <br /> µglL=Analytical results to micrograms per liter FP=Free Product <br /> TPHg=Total Petroleum hydrearbons as gasoline S=Sheen <br /> MtBE=methyl tent butyl ether <br /> MtBE was analyzed using USEPA Method 8020 <br /> <=Below detection limit for the analytic methods used <br /> *=Raised method reporting limit(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 <br /> The chromatogram does not match the typical gasoline fingerprint <br /> [I I Not sampled,as well is scheduled to be abandoned <br /> [2)MtBE was analyzed using USEPA Method 8260E <br /> [31 Chromatogram Pattem Weathered Gasoline C6 C12 <br /> [41 Benzene,toluene ethylbenzene and total xylenes were analyzed using USEPA Method 8260B <br /> [5]Chromatogram Pattern Unidentified Hydrocarbons C6-Ci2 <br /> 16]Hydrocarbon pattern is present in the requested quantitation range but does not resemble the pattern of the requested fuel <br /> i <br /> 12 of 12 <br /> K LWprcxTe 0 BP ARCOT213G%Sac Conceptual Mode]ReportlARCO-2130 GW Data <br />