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Ta <br /> Groundwater Monitoring Data and Analytical Results <br /> Chevron Service Station#9-8264 <br /> 3775 Tracy Boulevard <br /> 3 <br /> Vertical Measurements are in feet. Tracy,California Anal tical results are in parts per billion( b) <br /> Well Ground Depth Total <br /> DATE Head Water To SPIT 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 /> MW-3(cont) <br /> 08/27/97 17.88 8.16 9.72 -- - -- -- <50 <50 <0.5 <0.5 <0.5 <0.5 100 -- - <br /> 11/24/97 17.88 8.33 9.55 -- -- -- - 130** <50 <0.5 <0.5 <0.5 <0.5 240 -- <br /> 02/12/98 17.88 9.73 8.15 -- -- -- -- <50 <100 <I.0 <1.0 <1.0 <1.0 250 - <br /> 06/09/98 17.88 5.13 12.75 - -- -- <50 <50 <0.5 <0.5 <0.5 <0.5 90 <br /> 08/10/98 17.88 8.27 9.61 -- -- -- -- <50 <50 <0.5 <0.5 <0.5 <0.5 77 <br /> 11/24/98 17.88 8.16 9.72 -- -- -- <50 <50 <0.5 <0.5 <0.5 <0.5 1000 - - <br /> 03/05/99 17.88 8.88 9.00 -- -- -- - 63.1 <500 <5.0 <5.0 <5.0 <5.0 2840 - <br /> 06/01/99 17.88 8.30 9.58 -- -- -- 145** 612 <0.5 16.3 8.2 53.4 3540 - <br /> 08/30/99 17.88 8.10 9.78 -- -- -- ** <.50 <125 <1.25 <1.25 <1.25 <1.25 2830 - - <br /> 11/23/99 1.7.88 8.21 9.67 -- -- -- •* 82.6** <2500 <25 <25 <25, <25 4380 - <br /> 02/02/00 17.88 7.87 10.01 -- -- -- ** 122** <2500 <25 <25 <25 <25 9850 - <br /> 05/18/00 17.88 8.44 9.44 0.00 -- -- -- <50 <500 46 <5.0 <5.0 <5.0 4,100 -- -- -- <br /> **Chromatogram pattern indicated an unidentified hydrocarbon. <br /> MW-4 <br /> 05/24/96 17.89 8.82 9.07 - -- -- <50 <50 <0.5 1.8 <0.5 <0.5 91 - - <br /> 08/20/96 17.89 7.97 9.92 -- -- -- -- <50 <50 <0.5 <0.5 <0.5 <0.5 120 - <br /> 11/05/96 17.89 8.47 9.42 -- -- -- -- <50 <50 <0.5 <0.5 <0.5 <0.5 33 - - - <br /> 01/07/97 17.89 10.05 7.84 -- -- -- -- <50 <50 <0.5 <0.5 <0.5 <0.5 32 - <br /> 02/07/97 17.89 10.06 7.83 -- -- -- -- <50 <50 <0.5 <0.5 <0.5 <0.5 58 -- - <br /> 05/21/97 17.89 8.35: 9.54 -- - -- <50 <50. <0.5 <0.5 <0.5. <0.5 140 , - <br /> 08/27/97 17.89 8.33 9.56 -- -- -- -- 110** <50 <0.5 <0.5 <0.5 <0.5 45 - <br /> 11/24/97 17.89 . 8.61 9.28 - -- -- -- 150** <50 <0.5 <0.5 <0.5 <0.5 21 -- - <br /> **Chromatogram pattern indicated an unidentified hydrocarbon. <br /> 9-8264.xis/#386854 3 As of 05/18/00 <br /> L <br />