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Ta --3 <br /> Joint Groundwater MonitoriIta and Analytical Results <br /> North Stockton Auto Center <br /> i <br /> 8709 North Davis Road <br /> Stockton,California <br /> WE1Y ID! 'DATE DTWs: GWF ;', TPIt=G I3 .T ' E <br /> < X <br /> (PP <br /> . . . <br /> Ippb) MTBE <br /> (Pph� h) (P� ) <br /> MWl <br /> 06/25/01 31.60 -- <50 <0.5 <0.5 <0.5 <0.5 -- <br /> 14.29 08/22/01 1'2 33.89 -19.20 <50 <2.0 <2.0 <2.0 <2.0 <2.0 <br /> EXPLANATIONS• <br /> Groundwater monitoring data and laboratory analytical resuslts were provided by Ground Zero Analysis,Inc. <br /> TOC=Top of Casing B=Benzene (ppb)=Parts per billion <br /> DTW=Depth to Water T=Toluene =Not Measured/Not Analyzed <br /> (ft.)=Feet E=Ethylbenzene <br /> GWE=Groundwater Elevation X=Xylenes <br /> TPH-G=Total Petroleum Hydrocarbons as Gasoline MTBE=Methyl tertiary butyl ether - <br /> * TOC elevations were surveyed to arbitrary datum by Secor international,casing elevation of MW-1 tied into Tosco(Circle K)Unit#08671 wells. <br /> As requested by Secor international Inc.,0.02 feet has been added to DTW numbers,due to the difference of Gettler-Ryan,Inc.and Secor's probe. <br /> BTEX acid MTBE by EPA-Method-8260:= <br /> 08671.xls/#180198 8 As of 08/22/01 <br />