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Table 3. Analytical Results <br /> ARCO Station 2093, Tracy, California (continued) <br /> monitoring we <br /> number Concentrations m u9/1 <br /> and date sampled Benzene Toluene Eth lbenzene Xylenes TPH-G(a) <br /> 10/7/92 <0 5 <0 5 <0 5 <0 5 t50 <br /> 1/18/93 <0 5 <0 5 <0 5 <0 5 <50 <br /> 4/14/93 75 <0 5 <0 5 <0 5 310 <br /> 8/31/93(e) -- -- <br /> ATR-7 <br /> 3/10/89 <0 5 <0 5 <0 5 17 <200 <br /> 6/21/89 1 <0 3 0 6 0 5 <50 <br /> 9/18/89 04 <0 3 <0 3 1 1 <50 <br /> 12/27/89 10 0 9 27 7 9 90 <br /> 4/18/90 6 1 26 21 5 8 <50 <br /> 10/16/90 <0 5 <0 5 <0 5 <0 5 <50 <br /> 1/10/91 6 <0 5 18 4 1 <50 <br /> 4/10/91 -- — __ _- -- <br /> 7/10/91 -- -- -- -- -- <br /> 9/25/91 13 <0 5 <0 5 <0 5 <50 <br /> 1/23/92 -- -- -- -- -- <br /> 4/20/92 <br /> 7/8/92(e) -- -- -- -- -- <br /> 10/8/92 <0 5 <0 5 <0 5 <0 5 <50 <br /> 1/19/93 1 <0 5 0 6 <0 5 <50 <br /> 4/15/93 2 9 <0 5 <0 5 <0 5 <50 <br /> 8/31/93 <0 5 <0 5 <0.5 <0.5 <50 <br /> ATR-8 <br /> 8/25/91 110 <0 5 130 98 2700 <br /> 9/25/91 95 <0 5 51 97 1400 <br /> 1/23/92 25 <0 5 <0 5 <0 5 <50 <br /> 4/21/92 14 0 9 14 9 3 140 <br /> 7/8/92 40 <0 5 9 2 0 8 87 <br /> 10/8/92 7 8 3 2 11 8 8 140 <br /> 1/19/93 140 17 11 34 980 <br /> 4/15/93 4 2 <0 5 4 6 49 110 <br /> 8/31/93 15.0 15 41 71 700 <br /> ATR-9 <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 /> 7/10/91 <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 />