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Ta <br /> Groundwater Monitoring and Analytical Results <br /> Chevron Service Station#9-4275 <br /> 2905 West Benjamin Holt <br /> Stockton,California <br /> EXPLANATIONS: <br /> Groundwater monitoring data and laboratory analytical results prior to June 13,2000,were compiled from reports prepared by Blaine Tech Services,Inc. <br /> TOC=Top of Casing B=Benzene =Not Measured/Not Analyzed <br /> (ft.)=Feet T=Toluene (D)=Duplicate <br /> GWE=Groundwater Elevation E=Ethylbenzene (A)=Anomalous <br /> (ms])=Mean sea level X=Xylenes (S)=Sequoia Analytical <br /> DTW=Depth to Water MTBE=Methyl tertiary butyl ether (K)= Kiff Analytical <br /> TPH-G=Total Petroleum Hydrocarbons as Gasoline (ppb)=Parts per billion <br /> Laboratory report indicates weathered gasoline C6-C 12. <br /> 2 Laboratory report indicates gasoline C6-C12. <br /> 3 Laboratory report indicates unidentified hydrocarbons C6-C12. <br /> The result for this hydrocarbon is elevated due to the presence of single analyte peak(s)in the quantitation range. <br /> ` Laboratory report indicates weathered gasoline. <br /> 6 Laboratory report indicates sample was reanalyzed on January 2,2001. MTBE did not confirm. Vial did contain headspace. <br /> 7 The TPH-Gasoline result was 1400 ppb which was attributed to the presence of MTBE. <br /> R Hydrocarbons were found in the range of gasoline,but do not resemble a gasoline fingerprint. <br /> g Analysis by EPA Method 8260. <br /> i <br /> 9-4275,xls/#786845 20 As of 03102JOI <br />