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Ta <br /> Y� Groundwater Monitoringand Analytical Results .. <br /> Former Chevron Service Station 09-8632 <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 (ppb)=Parts per billion <br /> DTW=Depth to Water T=Toluene NP=No Purge <br /> (ft)=Feet E=Ethylbenzene =Not Measured/Not Analyzed <br /> GWE=Groundwater Elevation X=Xylenes <br /> (msl)=Relative to mean seal level MTBE=Methyl tertiary butyl ether <br /> TPH-G=Total Petroleum Hydrocarbons as Gasohne TOG=Total Oil&Grease <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 /> I Chromatogram pattern indicates an unidentified hydrocarbon <br /> 2 EPA Method 5520 <br /> 3 Laboratory report Indicates gasoline C6-C12 <br /> Laboratory report indicates unidentified hydrocarbons CIO-C24 <br /> 5 Laboratory report indicates unidentified hydrocarbons C9-C24 <br /> 6 Laboratory report indicates unidentified hydrocarbons<C16 <br /> 7 EPA Method 8260 <br /> E <br /> a Laboratory report indicates discrete peaks <br /> 9 Laboratory report indicates unidentified hydrocarbons>C16 <br /> i0 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 /> 12 Laboratory report indicates Toluene did not confirm via GCMS <br /> E <br /> I <br /> 9 8632 xis/#386855 7 As of 10/31/00 <br />