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Ta <br /> Groundwater Monitor ng*and Analytical Results . . <br /> Chevron Service Station#9-9$40 <br /> 4344 Waterloo Road ` <br /> Stockton,California <br /> EXPLANATIONS <br /> Groundwater monitoring data and laboratory analytical results prior to June 22,2000,were compiled from reports prepared by Blaine Tech Services,Inc <br /> TOC=Top of Casing TPH-G=Total Petroleum Hydrocarbons as Gasoline MTBE=Methyl tertiary butyl ether <br /> (11)=Feet B=Benzene (ppb)=Parts per billion <br /> GWE=Groundwater Elevation T=Toluene --=Not Measured/Not Analyzed <br /> (msl)=Mean sea levei E=Ethylbenzene QA=Quality Assurance/Trip Blank <br /> DTW=Depth to Water X=Xylenes <br /> Laboratory report indicates gasoline C6-C12+unidentified hydrocarbons C6-Cl2 <br /> 2 MTBE by EPA Method 8260 <br /> 3 Laboratory report indicates gasoline C6-C12 <br /> 4 Laboratory report indicates gasoline <br /> 5 Laboratory report indicates unidentified hydrocarbons C6-C12 <br /> 6 BTEX and MTBE by EPA Method 8260 <br /> Data provided by Secor International,Inc <br /> 9-9840 xis/#386846 5 As of 01/10/03 <br />