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Tal <br /> Groundwater Momtoring and Analytical Results <br /> Former Tosco(Unocal)Service Station#4409 <br /> 1502 N El Dorado Street <br /> Stockton,California <br /> EXPLANATIONS <br /> TOC=Top of Casing B=Benzene (ppb)=Parts per billion <br /> DTW=Depth to Water T=Toluene ND=Not Detected <br /> (ft)=Feet E=Ethylbenzene --=Not Measured/Not Analyzed <br /> S 1 =Screen Interval X=Xylenes <br /> (ft bgs)=Feet Below Ground Surface MTBE=Methyl tertiary butyl ether <br /> GWE=Groundwater Elevation <br /> (msl)=Mean sea level <br /> TPH-G=Total Petroleum Hydrocarbons as Gasoline <br /> * TOC elevations have been surveyed relative to mean sea level(msl)per the City of Stockton Benchmark No 23(Elevation= 11 14 feet msl),NGVD 29 <br /> 1 MTBE by EPA Method 8260 <br /> 2 Laboratory report indicates gasoline C6-C12 <br /> 3 Laboratory report indicates weathered gasoline C6-C12 <br /> 4 Well development performed <br /> s Detection linin raised Refer to analytical reports <br /> r <br /> I <br /> 4409 xls/#180238 3 As of 01122/01 <br />