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Table 3. Analytical Results <br /> ARCO Station 434, Lodi, California <br /> Monitoring well <br /> number Concentrations inu_gA <br /> and date sampled Benzene Toluene Eth lbenzene Xylenes TPH-G(a) <br /> W-1 <br /> 4/10/87 120 <10 <10 <10 120000 <br /> 7123187 180 200 <2 5 190 <900 <br /> 11/13/87 1600 2300 1400 6900 147200 <br /> 1/5189 3680 740 130 2280 - <br /> 4/10/89 2920 1050 <50 2830 - <br /> 7/11/89 1I40 310 16 685 - <br /> 10/89 - - <br /> Destroyed 5/90 <br /> W-1A <br /> 4/23/90 490 81 41 540 - <br /> 10/02/90 27 6 <0 5 8 <br /> 2/1191 100 24 3 4 50 - <br /> 4/18/91 110 5 8 <0 5 6 3 250 <br /> 7/24/91 75 5 5 <0 5 4 6 530 <br /> 10/23/91 20 <0 5 <0 5 <0 5 200 <br /> 2/11192 18 <1 <1 <1 430 <br /> 5/12/92 5 6 <0 5 <0 5 <0 5 220 <br /> 8118192 6 5 <0 5 <0 5 <0 5 140 <br /> 11/17/92 <0 5 <0 5 <0 5 <0 5 <50 . <br /> 2/23/93 <0 5 <0 5 <0 5 <0 5 <50 <br /> 5/26/93 <0 5 <0 5 <0 5 <0 5 <50 <br /> 8123/93 <0 5 <0 5 <0 5 <0 5 <50 <br /> 11/17/93 <0 5 <0 5 <0 5 <0 5 <50 <br /> 3/22/94 <0 3 <0 3 <0 3 <0 5 <10 <br /> 6123/94 <0 3 <0 3 <0 3 <0 5 <10 <br /> 9/28/94 <0 5 <0 5 <0 5 <0 5 <50 <br /> W-2 <br /> 4/10/87 4100 9200 680 5500 64000 <br /> 7/23/87 14000 25000 2300 16000 281700 <br /> 11/13/87 6200 5300 5600 13000 343900 <br /> 6124/88 3570 3900 755 3000 - <br /> 10/3/88 260 500 Ito 410 <br /> 1/6189 4400 4540 510 2740 - <br /> 4/6/89 4200 110 450 2620 <br /> 7/11/89 2090 1500 200 1150 - <br /> 1018//89 496 206 87 219 - <br /> ` 1/22/90 3600 4500 470 5000 18000 <br /> 5/9/90 4900 4000 350 5000 <br /> 10/2/90 2800 2300 260 2900 - <br /> 2/1191 2600 1400 150 1600 - <br /> 4/16/91 4300 2200 I10 1700 16000 <br /> 7124191 4900 740 110 1300 16000 <br /> 10/23/91 440 120 64 410 4000 <br /> 2/10/92 _ _ <br /> 5/12/92(b) <br />