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Table 3 Analytical Results <br /> ARCO Station 2093, Tracy, California <br /> Monitoring well <br /> number Concentrations in ug1l <br /> and date sampled Benzene Toluene Cthvlbenzene xylenes rPH-G(a) <br /> 10/27/93 <0 5 <0 5 <0 5 <0 5 <50 <br /> 2/18/94 08 1 <0 3 06 <10 <br /> 5/20/94 <0 3 <0 3 <0 3 <0.5 <10 <br /> ATR-12 <br /> 10/16/90 <0 5 <0 5 <0 5 <0 5 <50 <br /> 1/10/91 <0 5 <0 5 <0 5 <0 5 <50 <br /> 4/10/91 <0 5 <0 5 <0 5 <0 5 <50 <br /> 7/12/91 <0 5 <0 5 <0 5 <0 5 <50 <br /> 9/25/91 <0 5 <0 5 <0 5 <0 5 <50 <br /> 1/23/92 <0 5 <0 5 <0 5 <0 5 <50 <br /> 4/21/92 <0 5 <0 5 <0 5 <0 5 <50 <br /> 718192 <0 5 <0 5 <0 5 <0 5 <50 <br /> 10/7/92 <0 5 <0 5 <0 5 <0 5 <50 <br /> 1/18/93 <0 5 <0 5 <0 5 <0 5 <50 <br /> 4/14/93 <0 5 <0 5 <0 5 <0 5 <50 <br /> 8/31/93 <0 5 <0 5 <0 5 <0 5 <50 <br /> I0/27/93 <0 5 <0 5 <0 5 <0 5 <50 <br />• 2/18/94 04 0 5 <0 3 <0 5 <10 <br /> 5/20/94 <0 3 <0 3 <0.3 <0.5 <10 <br /> (a)Total petroleum hydrocarbons as gasoline <br /> (b) Well could not be located due to recent parking lot repaving <br /> (c) Not sampled due to presence of free product <br /> (d)The chromatogram does not match the typical gasoline fingerprint <br /> (e) Not sampled Well was inaccessible <br /> Dashes indicate not analyzed or not taken <br />