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TabC) <br /> Groundwater Monitoring Data and Analytical Results _. <br /> - Former Chevron Service Station#9-6258 <br /> 2409 East Main at F Street <br /> Stockton,California <br /> EXPLANATIONS• <br /> Groundwater monitoring data and laboratory analytical results prior to April 24,2000,were compiled from reports prepared by Blaine Tech Services,Inc. <br /> _ .. � . — .- <br /> TOC=Top of Casing .. r TPH-G=Total Petroleum Hydrocarbons as Gasoline 7 MTBE Methyl tertiary butyl ether' <br /> (ft.)=Feet B=Benzene <br /> {ppb}=Parts per billion <br /> GWE=Groundwater Elevation T=Toluene --=Not Measured/Not Analyzed <br /> (msl)=Mean sea level E=Ethylbenzene QA=Quality Assurance/Trip Blank <br /> DTW=Depth to Water X=Xylenes <br /> * TOC elevation for MW4 was survyed in June,2003,and referenced to City of Stockton benchmark 110,a cut square on the north curb return of Marsh and Filbert <br /> Streets(Benchmark Elevation=21.90 ft.). <br /> I MTBE by EPA Method 8260. <br /> Z BTEX and MTBE by EPA Method 8260. <br /> 3 Well development performed. <br /> 9-6258.xis/4386844 5 As of 07/21/04 <br />