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Table 3. Analytical Results <br /> ARCO Station 2093, Tracy, California (continued) <br /> onxtonng we <br /> number Concentrations m u <br /> and date sampled Benzene Toluene Eth lbenzene Xylenes TPH-G(a) <br /> 10/7/92 5 7 <0 5 <0 5 <0 5 59 <br /> 1/18/93(b) -- -- -- -- -- <br /> 4/14/93 3 8 0 7 0 8 19 55 <br /> 8/30/93 <0 5 <0.5 <0.5 <0 5 <50 <br /> ATR-3 <br /> 4/23/87 2300 180 <5 0 2300 17000 <br /> 12/22/87 5000 50 530 250 -- <br /> 3/24/88 8300 8700 4400 7800 43000 <br /> 6/23/88 6160 4221 1800 4750 70000 <br /> 9/29/88 8850 17600 2190 8170 57400 <br /> 2/22/89 1000 2100 480 2000 110000 <br /> 6/29/89 890 520 250 1100 4500 <br /> 9/18/89 1000 1300 460 2200 7400 <br /> 12/28/89 840 1400 840 5600 27000 <br /> 4/18/90 1000 490 340 1500 4800 <br /> 10/16/90 1900 1300 780 4600 14000 <br /> 1/10/91 610 230 160 670 2600 <br /> 4/10/91 910 120 110 190 3000 <br /> 7/10/91 420 300 340 760 19000 <br /> 9/24/91 280 81 69 130 2000 <br /> 1/23/92 --(c) --(c) --(c) --(c) --(c) <br /> 4/20/92 --(c) --(c) --(c) --(c) --(c) <br /> 7/8/92 --(c) --(c) --(c) --(c) --(c) <br /> 10/7/92 --(c) --(c) --(c) --(c) --(c) <br /> 1/18/93 --(c) --(c) --(c) --(c) --(c) <br /> 4/14/93 --(c) --(c) --(c) <br /> 8/30/93 --(c) --(c) --(c) <br /> ATR-4 <br /> 4/23/87 3000 200 QO 950 21000 <br /> 12/22/87 5300 310 430 270 -- <br /> 3/24/88 5800 320 930 740 6000 <br /> 6//23/88 237 8 8 2 10 5200 <br /> 9/29/88 1430 115 350 130 1400 <br /> 2/22/89 1300 82 54 170 22000 <br /> 6/29/89 590 38 97 220 1300 <br /> 9/18/89 280 13 49 100 630 <br /> 12/28/89 500 25 56 160 1300 <br /> 4/18/90 150 51 35 63 440 <br /> 10/16/90 26 41 4 8 0 38 380 <br /> 1/10/91 150 31 30 35 330 <br />. 4/10/91 84 <0 5 <0 5 24 500 <br />