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Table 3. Analytical Results <br /> ARCO Station 2093, Tracy, California <br /> omtonng well <br /> number Concentrations m u <br /> and date sampled Benzene Toluene Eth lbenzene Xylenes TPH-G(a) <br /> ATR-1 <br /> 4/23/87 <0 5 <0 5 <0 5 23 <100 <br /> 12/22/87 5 9 <0 5 0 9 <0 5 -- <br /> 3/24/88 <0 5 <0 5 <05 <0 5 -- <br /> 6/23/88 <0 5 13 43 22 -- <br /> 9/29/88 <0 5 <0 5 <0 5 <0 5 -- <br /> 2/22/89 14 <0 5 <0 5 18 <100 <br /> 6/21189 360 0 8 21 36 520 <br /> 9/18/89 250 1200 570 7100 27000 <br /> 12/27/89 3 4 <0 3 13 14 <50 <br /> 4/18/90 21 15 16 16 13 <br /> 10/16/90 1 <0 5 2 2 <50 <br /> 1/10/91 24 <0 5 57 2 3 <50 <br /> 4/10/91 13 <0 5 4 8 <0 5 73 <br /> 7/10/91 2 <0 5 47 17 90 <br /> 9/24/91 <0 5 <0 5 <0 5 <0 5 <50 <br /> 1/23/92 <0 5 <0 5 <0 5 <0 5 X50 <br /> 4/20/92 <0 5 <0 5 <0 5 <0 5 X50 <br /> 718/92 <0 5 <0 5 0 6 <0 5 <50 <br /> 10/7/92 <0 5 <0 5 <0 5 <0 5 <50 <br /> 1/18/93(b) -- -- -_ -- -- <br /> 4/14/93 <0 5 <0 5 15 <0 5 <50 <br /> 8/30/93 <0.5 <0.5 <0 5 <0.5 <50 <br /> ATR-2 <br /> 4/23/87 <0 5 0 6 <0 5 <0 5 <100 <br /> 12/22/87 <0 5 <0 5 <0 5 <0 5 -- <br /> 3/24/88 <0 5 <0 5 <0 5 <0 5 -- <br /> 6/23/88 <0 5 <0 5 <0 5 <0 5 -- <br /> 9/29/88 <0 5 <0 5 <0 5 <0 5 -- <br /> 2/22/89 18 07 0 6 3 4 370 <br /> 6/21/89 19 <0 3 04 <0 3 <50 <br /> 9/18/89 19 09 1 1 82 9 <br /> 12/27/89 35 <0 3 1 1 0 3 <50 <br /> 4/18/90 29 <0 3 <0 3 <0 3 50 <br /> 10/16/90 <0 5 <0 5 <0 5 <0 5 <50 <br /> 1/10/91 08 <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 <05 <0 5 <50 <br /> 9/24/91 <0 5 <0 5 <0 5 <0 5 <50 <br /> 1/23/92 <0 5 <0 5 <0 5 <0 5 <50 <br /> 4/20/92 <0 5 <0 5 <0 5 <0 5 <50 <br /> 7/8/92 28 <0 5 <0 5 <0 5 <50 <br />