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i <br /> } <br /> Table I <br /> Groundwater Monitoring Data and Analytical Results <br /> Chevron Service Station#9-6171 <br /> 6633 Pacific Avenue <br /> Stockton,California <br /> EXPLANATIONS <br /> Groundwater monitoring data and laboratory analytical results prior to May 22,2000,were compiled from reports prepared by Blaine Tech Services,Inc <br /> I <br /> TOC=Top of Casing B=Benzene EDB=Ethylene Dibromide <br /> (ft}=Feet T=Toluene TOG=Total Oil&Grease <br /> GWE=Groundwater Elevation E=Ethylbenzene (ppb)=Parts per billion <br /> (msl)=Mean sea level X=�Xylenes --=Not Measured/Not Analyzed <br /> DTW=Depth to Water i� MTBE=Methyl tertiary butyl ether QA=Quality Assurance' <br /> TPH-G=Total Petroleum Hydrocarbons as Gasoline <br /> * TOC elevations were surveyed in July of 2001,by Morrow Surveying Elevations are based on San Joaquin County Benchmark 12,a brass disc marking <br /> cos monument stamped"1N-4"in monument box on the east side of Pacifici Avenue at the approximate centerline Bejamin Holt Drive,(Elevation= 11 02) <br /> i I� <br /> Chromatogram pattern indicates an unidentified hydrocarbon <br /> z Chromatogram pattern indicates a gas and unidentified hydrocarbon'l l <br /> Confirmation run ! <br /> 4 Laboratory report indicates Bis-(2-Ethylhexyl)-Phthalate was detectL at IS ppb and Butyl-Benzyl-Phthalate was detected at 9 9 ppb <br /> s Gasoline range concentration reported,peaks are representative of tetrachloroethane and trace amount of gasoline <br /> 6 Laboratory report indicates discrete peaks <br /> 7 MTBE by EPA Method 8260 <br /> S MTBE by EPA Method 8260 was analyzed outside the EPA recommended I holding time <br /> 4 � <br /> Survey data unavailable <br /> 10 BTEX and MTBE by EPA Method 8260 ! 'i <br /> 1 � <br /> 1 <br /> j <br /> E <br /> f <br /> ! <br /> r E 1 <br /> k <br /> 'E <br /> 9-6171 A 5121 As*16/02 <br />