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Tabl <br /> Groundwater Monitoring Dand Analytical Results <br /> Former Chevron Service Station#9-8632 <br /> 575 Grant Line Road <br /> Tracy,California <br /> EXPLANATIONS <br /> Groundwater monitoring data and laboratory analytical results prior to lune 26,2000,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 /> DTW=Depth to Water E=Ethylbenzene NP=No Purge <br /> GWE=Groundwater Elevation X=Xylenes =Not Measured/No(Analyzed <br /> r <br /> (ms])=Mean sea level MTBE=Methyl tertiary butyl ether <br /> TPH-G=Total Petroleum Hydrocarbons as Gasoline <br /> TPH-D=Total Petroleum Hydrocarbons as Diesel <br /> * The survey was completed on November 16,2000,by Virgil Chavez Land Surveying The elevations are based on the data provided by G-R Inc holding <br /> TOC of MW-1 Measurements taken at approximate north side of top of box,top of casings were marked at location of measurements <br /> Chromatogram pattern indicates an unidentified hydrocarbon <br /> 2 EPA Method 5520 <br /> ` Laboratory report indicates gasoline C6-C12 <br /> Laboratory report indicates unidentified hydrocarbons CIO-C24 <br /> S Laboratory report indicates unidentified hydrocarbons C9-C24 <br /> 6 Laboratory report indicates unidentified hydrocarbons<C16 <br /> EPA Method 8260 <br /> a Laboratory report indicates discrete peaks <br /> y Laboratory report indicates unidentified hydrocarbons>C16 <br /> Laboratory report indicates hydrocarbon pattern present in the requested fuel quantitation range but does not resemble the pattern of the <br /> requested fuel <br /> ' Laboratory report indicates gasoline <br /> Laboratory report indicates Toluene did not confirm via GCMS <br /> 9-8632 xis/#386855 7 As of 02/22/01 <br /> E <br />