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Ta <br /> • Groundwater Monitor ngand Analytical Results <br /> Chevron Service Station#9-2396 <br /> 25651 Highway 99 North <br /> Acarnpo, California <br /> EXPLANATIONS <br /> Groundwater monitoring data and laboratory analytical results prior to July 22,2002,were provided by Secor international Inc <br /> TOC=Top of Casing TPH-G=Total Petroleum Hydrocarbons as Gasoline --=Not Measured/Not Analyzed <br /> (ft)=Feet B—Benzene QA=Quality Assurance/Trip Blank <br /> DTW—Depth to Water T=Toluene <br /> S I =Screen Intervals E=Ethylbenzene <br /> (ft bgs)=Feet Below Ground Surface X=Xylenes <br /> GWE=Groundwater Elevation MTBE=Methyl tertiary butyl ether <br /> (msl)=Mean Sea Level (ppb)=Parts per billion <br /> I Samples received at laboratory with hot temperature blank <br /> Z BTEX and MTBE by EPA Method 8260 <br /> 3 Laboratory report indicates the initial analysis could not be used The sample was re-analyzed from a vial with headspace <br /> 9-2396 xls/4186960 As of 04/24/03 <br />