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• TJO1 • <br /> Groundwater Monitoring Data and Analytical Results <br /> Former Tosco(Unocal)Service Station#4409 <br /> 1502 North El Dorado Street <br /> J <br /> Stockton,California <br /> W <br /> EXPLANATIONS, ° <br /> TOC=Top of Casing B=Benzene ( <br /> ppb)_.Parts per billion <br /> DTW=Depth to Water T=Toluene ND=Not Detected w <br /> D <br /> (ft}=Feet B=Elhylbenzene -=Not Measured/Not Analyzed <br /> S I =Screen Interval X=Xylenes <br /> (ft bgs)=Feet Below Ground Surface MTBE=Methyl tertiary butyl ether m <br /> GWE=Groundwater Elevation <br /> 0 <br /> (ms])=Mean sea level <br /> Z <br /> TPH-G=Total Petroleum Hydrocarbons as Gasolene <br /> * TOC elevations have been surveyed relative to msl,per the City of Stockton Benchmark No 23,(Elevation=I I t4 feet,ms])NGVD 29 <br /> e MTBE by EPA Method 8260 <br /> 2 Laboratory report indicates gasoline C&C12 <br /> 3 Laboratory report indicates weathered gasoline C6-C12 <br /> 4 Well development performed <br /> Detection limit raised Refer to analytical reports <br /> m <br /> w <br /> w <br /> N <br /> W <br /> W <br /> W <br /> A <br /> A <br /> 44W xis/#180238 3 <br /> As of()4N14/01 A <br />