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Table 3. Analytical Results <br /> ARCO Station 2093,Tracy, California (cont'd) <br /> Monitoring well <br /> number Concentrations in u l <br /> and date sampled Benzene Eth lbenzene Toluene Xylenes TPH-G(a) <br /> 9/25/91 <0 5 <05 <0 5 <0 5 <50 <br /> 1/23/92 <0 5 <05 <0 5 <0 5 <50 <br /> 4!21/92 <0 5 <0 5 <0 5 <0 5 <50 <br /> 7/8192 <0 5 <0 5 <0 5 <0 5 <50 <br /> 10!1192 <05 <0 5 <0 5 <0 5 <50 <br /> ATR-11 <br /> 8/25/91 <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 <05 <05 <0 5 <0 5 <50 <br /> 4/21/92 <0 5 <05 <0 5 <0 5 <50 <br /> 7/8/92 <0 5 <0 5 <0 5 <0 5 <50 <br /> 1Or7192 <05 <0 5 <0 5 <0.5 <50 <br /> ATR-12 <br /> 10/16/90 <0 5 <0 5 <0 5 <0 5 <50 <br /> 1/10/91 <0 5 <05 <0 5 <0 5 <50 <br /> 4/10/91 <05 <05 <0 5 <0 5 <50 <br /> 7/12/91 <0 5 <05 <0 5 <0 5 <50 <br /> 9/25/91 <0 5 <05 <0 5 <0 5 <50 <br /> 1/23192 <0 5 <05 <0 5 <0 5 <50 <br /> 4/21/92 <0 5 <05 <0 5 <0 5 <50 <br /> 7/8/92 <0 5 <05 <0 5 <0 5 <50 <br /> 10!1192 <0.5 <05 <0 5 <0.5 <50 <br /> (a)Total petroleum hydrocarbons as gasoline <br /> (b)Not sampled due to presence of free product. <br /> (c)The chromatogram does not match the typical gasoline fingerprint. <br /> (d)Not sampled Well was inaccessible <br /> Dashes indicate not analyzed or not taken <br /> t <br />