Laserfiche WebLink
TABLE 1 <br /> GROUNDWATER MONITORING DATA <br /> ARCO Service Station No 2130 <br /> 7906 North El 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 msl) (ft btc) (ft btc) (feet insl) gg/L gg/L gglL gg/L gg/L gg/L Observations <br /> btc=below top of casing <br /> msl=mean sea level <br /> bgs W below ground surface NA=blot analyzed NE=Not evaluated <br /> gg/L=Analytical results in 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 hnut 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 gasohne fingerprint <br /> [1] Not sampled,as well is scheduled to be abandoned <br /> [2]MtBE was analyzed using USEPA Method 8260B <br /> [3]Chromatogram Pattern Weathered Gasoline C6-C12 <br /> [4]Benzene,toluene,ethylbenzene and total xylenes were analyzed using USEPA Method 8260B <br /> [5]Chromatogram Pattern Unidentified Hydrocarbons C6-C12 <br /> [6]Hydrocarbon pattern is present in the requested quantitation range but does not resemble the pattern of the requested fuel <br /> I <br /> Arco_2I 30_4QMR02 <br /> 12 of 12 <br />