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Groundwater MonitorinjWta.and Analytical Results <br /> Tosco(Former BP)Service Station#11192 <br /> 1403 Country Club Boulevard <br /> Stockton,California o <br /> EXPLANATIONS: <br /> TOC=Top of Casing B=Benzene =Not Measured/Not Analyzed <br /> (ft.)=Feet T=Toluene ND=Not detected <br /> GWE=Groundwater Elevation E=Ethylbenzene PP=Pre-purge sample <br /> (msl)=Mean sea level X=Xylenes D=Duplicate sample <br /> DTW=Depth to Water MTBE=Methyl tertiary butyl ether <br /> TPH-G=Total Petroleum Hydrocarbons as Gasoline (ppb)=Parts per billion <br /> * TOC elevations were surveyed on September 20,2001,by Virgil Chavez Land Surveying. The benchmark for the survey was a City of Stockton benchmark, <br /> being a disk in monument box,in the intersection of Country Club Boulevard and Pershing Avenue,(Benchmark Elevation=4.71 feet,NGVD 29). <br /> I MTBE by EPA Method 8260. <br /> 2 Laboratory report indicates gasoline C6-C12. <br /> 3 Original sample bottles broken; resampled. <br /> 11192.40180288 1 As of 02/18/02 <br />