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Tab <br /> Groundwater Monitoring b*nd Analytical Results <br /> Chevron Service Station#9-0557 <br /> 139 South Center Street <br /> Vertical Measurements are in feet. Stockton,California y . p P (ppb) <br /> Analytical results are in arts per billion b <br /> ' <br /> Well Graan ilepfil; <br /> DATE Head Water To 1*Fate+< TPH« Benzene 'Toluene Ethyl- Xylenes MTBE Fecal <br /> 11.lsv. Eley Water> s611-6. Benzene Coliform' <br /> MW4(cont) <br /> 11/24/97 12.34 -15.75 28.09 * <50 <0.5 <0.5 0.96 0.53 <2.5 -- <br /> 02/11/98 12.34 -13.46 25.80 -- <50 <0.5 <0.5 <0.5 <0.5 <2.5 - <br /> s• < <0.5 <0.5 <0.5 <0.5 <2.5 <br /> 06/09/98 12.34 -9.90 22.24 50 -- <br /> 07/30/98 12.34 -9.87 22.21 -- <50 <0.5 <0.5 <0.5 <0.5 <2.5 -- <br /> 11/10/98 12.34 -10.80 23.14 -- <50 <0.5 <0.5 <0.5 <0.5 <2.5 -- <br /> 02/17/99 12.34 •10.17 22.51 -- <50 <0.5 <0.5 <0.5 <0.5 <2.5 - <br /> 05/18/99 12.34 -9.28 21.62 -- <50 <0.5 <0.5 <0.5 <0.5 <2.5 -- <br /> 08/30/99 12.34 -10.47 22.81 -- <50 <0.5 2.36 <0.5 0.772 <5.0 <br /> 12/02/99 12.34 -11.06 23.40 -- <50 <0.5 <0.5 <0.5 <0.5 <5.0 - <br /> 02/02/00 12.34 -10.87 23.21 -- <50 <0.5 <0.5 <0.5 <0.5 <2.5 -- <br /> 05/17/00 12.34 -8.70 21.04 -- 54.92 <0.500 <0.500 <0.500 2.09 <2.50 -- <br /> 08114100 12.34 -9.77 22.11 -- <50 <0.50 0.61 <O.SO <0.50 <2.5 -- <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 limits. <br /> I <br /> 9-0557.xls/#386843 8 As of 08114100 <br />