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Table 3. Analytical Results <br /> ARCO Station 2093, Tracy, California(cont'd) <br /> Momtonng well <br /> number Concentranons m ugVl <br /> and date sampled Benzene Eth lbenzene Toluene ___2Lvlenes TPH-G a <br /> 9/18/89 1000 460 1300 2200 7400 <br /> 12/28/89 840 840 1400 5600 27000 <br /> 4/18/90 1000 340 490 1500 4800 <br /> 10/16/90 1900 780 1300 4600 14000 <br /> 1/10/91 610 160 230 670 2600 <br /> 4/10/91 910 110 120 190 3000 <br /> 7/10/91 420 340 300 760 19000 <br /> 9/24/91 280 69 81 130 2000 <br /> 1/23/92 --(b) --(b) --(b) —(b) —(b) <br /> 4/20192 .-(b) --(b) --(b) --(b) -0) <br /> ATR-4 <br /> 4/23/87 3000 <10 200 950 21000 <br /> 12/22/87 5300 430 310 270 -- <br /> 3/2.4/88 5800 930 320 740 6000 <br /> 6/23/88 237 2 8 8 10 5200 <br /> 9/29/88 1430 350 115 130 1400 <br /> 2/22/89 1300 54 82 170 22000 <br /> 6/2989 590 97 38 220 1300 <br /> 9/1889 280 49 13 100 630 <br /> 12/28/89 500 56 25 160 1300 <br /> 4/18/90 150 35 51 63 440 <br /> 10/16/90 26 48 41 038 380 <br /> 1/10191 150 30 31 35 330 <br /> 4/10/91 84 <0.5 <0.5 24 500 <br /> 7/10/91 39 3 7 <05 3 190 <br /> 9/24/91 22 41 <05 15 70 <br /> 1/23/92 300 49 5.2 72 1200 <br /> 4/21/92 150 36 <5 29 560 <br /> ATR-5 <br /> 3/I0/89 693 327 <5 0 7 6600 <br /> 6/29/89 490 280 24 13 2200 <br /> 9/18/89 68 63 1 1 5 8 1000 <br /> 12/27/89 94 150 2 <1 2200 <br /> 4/18/90 120 68 26 140 1900 <br /> 10/16/990 18 79 4 7 16 380000 <br /> 1/10/91 71 16 12 2 6 350 <br /> 4/10191 46 7 <0.5 <0.5 370 <br /> 7/10/91 9.5 18 <0.5 1.5 1200 <br /> 9/24/91 <0.5 <05 <0.5 <0.5 <50 <br /> 1/23/92 14 1.5 1.5 <0.5 180 <br /> 4/21/92 L6 2 <0.5 4.5 290 <br />