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Tafatta-and <br /> Groundwater Monitoring Analytical Results <br /> Chevron Service Station#9-8264 <br /> 3775 Tracy Boulevard <br /> California ' <br /> Vertical Measurements are in feet. Tracy, Analytical results are in arts per billion( b) <br /> Well Ground Depth Total <br /> HATE Head Water To SPH SPH SPH Notes TPH- TPH- Benzene Toluene Ethyl- Xylenes MTBE TOG EPA EPA <br /> Elev. Elev. Water Thickness Removed Removed Diesel Gasoline Benzene (EPA 8020) 8270 8010 <br /> TRIP BLANK(cont) <br /> 03/05/99 -- -- -- -- -- -- <50 <0.5 <0.5 <0.5 <0.5 <2.0 - -- -- <br /> 06/01/99 - -- -- - <50 <0.5 <0.5 <0.5 <0.5 <5.0 - - <br /> 08/30/99 - - -- -- -= - -- <50 <0.5 <0.5 <0.5 <0.5 <2.5 - - <br /> 11/23/99 -- -- -- -- -- -- -- <50 <0.5 <0.5 <0.5 <0.5 <2.5 - <br /> 02/02/00 -- -- <50 <0.5 <0.5 <0.5 <0.5 <2.5 - - <br /> 05/18/00 -- __ .. .. ._ .. -- <50 <0.50 <0.50 <0.50 <0.50 <2.5 -- -- <br /> EXPLANATIONS: <br /> Groundwater monitoring data and laboratory analytical results prior to May 18,2000,were compiled from reports prepared by Blaine Tech Services,Inc. <br /> TPH=Total Petroleum Hydrocarbons <br /> MTBE=Methyl tertiary butyl ether <br /> TOG=Total Oil&Grease <br /> -=Not Measured/Not Analyzed <br /> ' Laboratory report indicates gasoline C6-C12. <br /> z Laboratory report indicates unidentified hydrocarbons<C16. <br /> E <br /> i <br /> I <br />�l <br /> f <br /> 9-8264.xls/4386854 5 As of 05/18/00 <br /> I_ <br />