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Table 3. Analytical Results <br /> ARCO Station 2093, Tracy, California (cont'd) <br /> Monitoring well <br /> number Concentrations in u 1 <br /> and date sampled Benzene Eth lbenzene Toluene Xvlenes TPH-G(a) <br /> 4118/90 1000 340 490 1500 4800 <br /> 10/I6/90 1900 780 1300 4600 14000 <br /> 1/10191 610 160 230 670 2600 <br /> 4110191 910 110 120 190 3000 <br /> 7/10/91 420 340 300 760 19000 <br /> 9124/91 280 69 81 130 2000 <br /> 1123/92 --(b) --(b) --(b) --(b) --(b) <br /> 4/20/92 --(b) --(b) --(b) --(b) --(b) <br /> 7/8/92 --(b) --(b) --(b) --(b) --(b) <br /> 10!1192 .-(b) --{b) --(b) --(b) --(b) <br /> ATR-4 <br /> 4/23187 3000 <10 200 950 21000 <br /> 12/22/87 5300 430 310 270 -- <br /> 3/24/88 5800 930 320 740 6000 <br /> 6123188 237 2 8 8 10 5200 <br /> 9/29/88 1430 350 115 130 1400 <br /> 2/22189 1300 54 82 170 22000 <br /> 6/29/89 590 97 38 220 1300 <br /> 9/18189 280 49 13 100 630 <br /> 12/28/89 500 56 25 160 1300 <br /> 4118190 150 35 5 t 63 440 <br /> 10/16/90 26 4 8 41 038 380 <br /> 1/10/91 150 30 3 1 35 330 <br /> 4/10/91 8 4 <05 <0 5 24 500 <br /> 7110191 39 3 7 <0 5 3 190 <br /> 9/24/91 22 42 <05 15 70 <br /> 1/23/92 300 49 5 2 72 1200 <br /> 4!21/92 150 36 <5 29 560 <br /> 7/8192 150 36 21 39 590 <br /> 1 0M9 240 62 4 8 97 1200 <br /> ATR-5 <br /> 3/10/89 693 327 <5 0 7 6600 <br /> 6/29/89 490 280 2 4 1 3 2200 <br /> 9118189 68 63 1 1 5 8 1000 <br /> 12/27/89 94 150 2 <1 2200 <br /> 4/18/90 120 6 8 2 6 140 1900 <br /> 10/16/90 18 79 47 16 380000 <br /> 1/10/91 7 1 16 1 2 2 6 350 <br /> 4/10/91 46 7 <0 5 <0 5 370 <br /> 7/10/91 9 5 18 <0 5 1 5 1200 <br /> 9/24/91 <05 <0 5 <0 5 <0 5 <50 <br /> 1/23/92 1 4 1 5 1 5 <0 5 180 <br /> 4/21192 1 6 2 <0 5 <0 5 290 <br /> 7/8/92 <0 5 0 6 <0 5 <0 5 240 <br /> 10/8/92 <05 <0 5 <0 5 <0.5 160(c) <br /> ATR-6 <br /> 3/10/89 <0 5 <0 5 <0 5 <0 5 <200 <br /> 6/2I/89 <0 3 <0 3 <0 3 0 3 <50 <br /> 9/18/89 0 5 0 3 1 3 3 8 <50 <br />