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Tal <br /> Groundwater Monitoringr,_-.,a and Analytical Results <br /> Former Texaco Service Station(Site#211295) <br /> 368 East F Street <br /> Oakdale,California <br /> EXPLANATIONS- <br /> Groundwater monitoring data and laboratory analytical results prior to October 30,2002,were compiled from reports prepared by Cambria Environmental Technologies, Inc. <br /> TOC=Top of Casing TPH-G=Total Petroleum Hydrocarbons as Gasoline (ppb)=Parts per billion <br /> (h.)=Feet B=Benzene -=Not Measured/Not Analyzed <br /> DTW=Depth to Water T=Toluene QA=Quality Assurance/Trip Blank <br /> GWE Groundwater Elevation E=Ethylbenzene <br /> (msl)=Mean Sea Level X=Xylenes <br /> TPH-D=Total Petroleum Hydrocarbons as Diesel MTBE=Methyl tertiary butyl ether <br /> * TOC elevations are referenced to msl. TOC elevations were resurveyed May 7,2002,by Virgil Chavez Land Surveying. <br /> ' The sample was analyzed outside of EPA recommended hold time. <br /> TPH-G and BTEX by EPA Method 8260;prior to July 11,2002,TPH-G was analyzed by EPA Method 8015 and BTEX by EPA Method 8020. <br /> TOC altered due to wellhead maintenance. <br /> 4 BTEX by EPA Method 8260. <br /> 21 1295.xis/H386940 5 As of 07/29/04 <br />