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Tab <br /> Groundwater Monitoring Tab <br /> Analytical Results <br /> Chevron Service Station#9-0557 <br /> 139 South Center Street <br /> Vertical Measurements are in feet. Stockton,Califomia y . p p (ppb) <br /> Anal t�ca3 results are in arts per billion b) <br /> well: Ground Depth, <br /> DATE Head Water '>C'0 Kbtea TPIW Benzene Toluene Ethyl- Xylenes MTBE Fecal <br /> Elev. Elev. Watter Gasoline, Benzene Coliform' <br /> MW-2(cont) <br /> 11/24/97 11.81 -16.34 28.15 * <50 1.2 <0.5 <0.5 0.62 <2.5 -- <br /> 02/11/98 11.81 -13.46 25.27 -- <50 0.53 <0.5 <0.5 <0.5 <2.5 -- <br /> 06/09/98 11.81 -10.19 22.00 ** <50 3.5 0.65 <0.5 <0.5 <2.5 -- <br /> 07/30/98 11.81 -10.27 22.08 -- <50 4.2 0.59 <0.5 0.97 6.00 -- <br /> 11/10/98 11.81 -11.14 22.95 -- <50 2.0 <0.5 <0.5 1.5 <2.5 -- <br /> 02/17/99 11.81 -10.34 22.15 -- <50 3.1 <0.5 <0.5 <0.5 <2.5 <br /> 05/18/99 11.81 -9.59 21.40 -- <50 11 <0.5 <0.5 0.87 2.80 -- <br /> 08/30/99 11.81 -10.73 22.54 -- <50 <0.5 2.64 <0.5 0.91 <5.0 -- <br /> 12/02/99 11.81 -11.38 23.19 -- <50 7.34 <0.5 <0.5 <0.5 <5.0 -- <br /> 02/02/00 11.81 -11.19 23.00 -- 173 15.60 <0.5 <0.5 1.06 2.87 <br /> 05/17/00 11.81 -9.04 20.85 -- <50.0 1.92 <0.500 <0.500 0.831 <2.50 -- <br /> 08/14/00 11.81 -10.13 21.94 - 55' 1.8 0.67 <0.50 0.91 10 -- <br /> i <br /> *Oxygenates by EPA 8260 and Methanol by EPA 8015 were not detected; see lab report for detection limits. <br /> **Oxygenates by EPA 8260 were not detected;see lab report for detection litnits. <br /> 9-0557.xls14386843 4 As of 08/14/00 <br />