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Table 1 <br /> Groundwater Monitoringand Analytical Results <br /> Chevron Service tion#9-6171 <br /> 6633 Pacific Avenue <br /> Stockton, California <br /> EXPLANA TIONS <br /> Groundwater monitoring data and laboratory analytical results prior to May 22,2400,were compiled from reports prepared by Blaine Tech Services Inc <br /> TOC=Top of Casing B=Benzene TOG=Total Oil&Grease <br /> (ft)=Feet T=Toluene (ppb)=Parts per billion <br /> GWE—Groundwater Elevation E=Ethylbenzen(, --=Not Measured/Not Analyzed <br /> (ms])=Mean sea level X=Xylenes QA=Quality Assurance/Trip Blank <br /> DTW=Depth to Water MTBE=Methyl tertiary butyl ether <br /> TPH-G=Total Petroleum Hydrocarbons as Gasoline EDB=Ethylene Dibromide <br /> * TOC elevations were surveyed in luly of 2401,by Morrow Surveying Elevations are based on San Joaquin County Benchmark 12,a bias,,disc marking <br /> cos monument stamped"IN-4" in monument boy on the east side of Pacific Avenue at the approximate centerline Benjamin Holt Drive,(Elevation= 11 02) <br /> 1 Chromatogram pattern indicates an unidentified hydrocarbon <br /> Z Chromatogram pattern indicates a gas and unidentified hydrocarbon <br /> Confirmation run <br /> Laboratory report indicates Bis-(2-Ethylhexyl)-Phthalate was detected at 15 ppb and Butyl-Benzyl-Phthalate was detected at 9 9 ppb <br /> 5 Gasoline range concentration reported,peaks are representative of tetrachloroethane and trace amount of gasoline <br /> G Laboratory report indicates discrete peaks <br /> 7 MTBE by EPA Method 8260 <br /> 9 MTBE by EPA Method 8260 was analyzed outside the EPA recommended holding time <br /> 9 Survey data unavailable <br /> 10 BTEX and MTBE by EPA Method 8260 <br /> 11 Laboratory report indicates the reported value for Toluene is suspected system contamination <br /> i <br /> 9-6171 rls/#385121 21 As of 07/13104 <br />