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T . � <br /> Groundwater Monitorinag and Analytical Results <br /> I <br /> Chevron 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 B=Benzene (ppb)=Parts per billion <br /> (ft.)=Feet T=Toluene ND=Not Detected <br /> GWE=Groundwater Elevation E=Ethylbenzene =Not Measured/Not Analyzed <br /> (msl)=Mean sea level X=Xylenes <br /> DTW=Depth to Water MTBE=Methyl tertiary butyl ether <br /> SPHT=Separate-Phase Hydrocarbon Thickness <br /> TPH-G=Total Petroleum Hydrocarbons as Gasoline <br /> * GWE was corrected for the presence of SPH; correction factor: [(TOC-DTW)+(SPHT x 0.80)]. <br /> Fecal coliforms measured in organisms per 100 milliliters(ml). <br /> Z Chromatogram pattern indicates an unidentified hydrocarbon. <br /> ' Oxygenates by EPA 8260 and Methanol by EPA 8015 were not detected; see lab report for detection limits. <br /> ° Oxygenates by EPA 8260 were not detected; see lab report for detection limits. <br /> ` Laboratory report indicates unidentified hydrocarbons C6-C12. <br /> 6 Laboratory report indicates weathered gasoline C6-C 12. <br /> Laboratory report indicates gasoline C6-C12+unidentified hydrocarbons<C6. <br /> S Laboratory report indicates gasoline C6-C12. <br /> y Laboratory report indicates constituents were analyzed by EPA Method 8260. <br /> i <br /> 9-0557.xis/#386843 13 As of 02!26!01 <br />