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I� Table 1 <br /> Groundwater Monitoring Data and Analytical Results <br /> CI evron Service Station#9-0557 <br /> 139 South Center Street <br /> Stockton,California <br /> EXPLANATIONS: <br /> Groundwater monitoring data and laboratory analytical results prior to�May 17,2000,were compiled from reports prepared by Blaine Tech Services,Inc. <br /> TOC=Top of Casing SPHT=Separate-Phase Hydrocarbon Thickness (ppb)=Parts per billion <br /> (ft.)=FeetTPH-G=Total Petroleum Hydrocarbons as Gasoline ND=Not Detected <br /> GWE=Groundwater Elevation B=Benzene <br /> --=Not Measured/Not Analyzed <br /> (msl)=Mean sea level T=Toluene QA=Quality Assurance <br /> S.I.=Screen Interval E=Ethylbenzene <br /> (ft.bgs)=Feet Below Ground Surface X=Xylenes I� <br /> DTW=Depth to Water MTBE=Methyl tertiary butyl ether <br /> GWE was corrected for the presence of SPH; correction factor:[(TOC-DIV)+(SPHT x 0.80)3. <br /> ' Fecal coliforms measured in organisms per 100 milliliters(ml). <br /> 2 Chromatogram pattern indicates an unidentified hydrocarbon. <br /> a <br /> Oxygenates by EPA 8260 and Methanol by EPA 8015 were not detected, see lab report for detection limits. <br /> 4 If <br /> Oxygenates by EPA 8260 were not detected; see lab report for detection limits. <br /> s Laboratory report indicates unidentified hydrocarbons C6-C12. <br /> F Laboratory report indicates weathered gasoline C6-C12. <br /> Laboratory report indicates gasoline C6-Cl2+unidentified hydrocarbons<C6. <br /> 8 Laboratory report indicates gasoline C6-C 12. <br /> 9 Laboratory report indicates constituents were analyzed by EPA Method 8260. <br /> 1° Well development performed. <br /> ' MTBE by EPA Method 8260. <br /> I <br /> I <br /> 9_0557A843 As*1,11102 <br />