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Groundwater Moniton*and Analytical Results <br /> Chevron Service Station#9-3232 <br /> 8660 Lower Sacramento 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 B=Benzene (ppb)=Parts per billion <br /> (ft)=Feet T=Toluene =Not Measured/Not Analyzed <br /> GWE=Groundwater Elevation E=Ethylbenzene <br /> (tnsl)=Mean sea level X=Xylenes <br /> DTW=Depth to Water MTBE=Methyl tertiary butyl ether <br /> TPH-G=Total Petroleum Hydrocarbons as Gasoline <br /> * TOC elevations were surveyed in April of 2001 by Morrow Surveying Elevations are based on San Joaquin County Benchmark No IN-6 Brass disk <br /> in well at Thorton and Davis Roads (Elevation= 14 43 feet) <br /> TOC elevation changed due to well head maintenance <br /> 2 MTBE by EPA Method 8260 <br /> ' Laboratory report indicates gasoline C6-C12 <br /> ° Laboratory report indicates unidentified hydrocarbons C6-CI2 <br /> 5 TOC has been altered <br /> 9 3232 xlsl#386463 3 As of 07/18/01 <br />