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1 <br /> 1 Table 4. Historical Groundwater Sample Results Continued, <br /> ARCO Facility 434, Lodi, California <br /> Monitoring well <br /> number and Concentrations in pg/L <br /> 1 date sampled Benzene Toluene Ethylbenzene Xvlenes TPH-G(a) MTBE <br /> 312195 <0 5 <0 5 <0 5 <0 5 <50 <br /> 5/18195 <0 5 <0 5 <0 5 <0 5 <50 <br /> 1 8/10/95 <0 5 <0 5 <0 5 0 7 <50 -- <br /> 11/17/95(Q <br /> 2114196 13 2 9 0 53 17 68 -- <br /> 5/9/96(fl -- <br /> 1 W-3 <br /> 4/10/87 30000 38000 1800 14000 180000 -- <br /> 1 7/23/87 12000 23000 2400 15500 227300 -- <br /> 11/13/87 3400 3200 2700 8500 176900 -- <br /> 10/3/88 103 149 1 9 95 -- <br /> 1 116/89 2250 4320 210 2600 == -- <br /> 4/6/89 2990 70 240 2380 <br /> 7/11/89 1480 520 70 420 -- <br /> 1 10/17/89 669 253 33 280 20000 =� <br /> 1119/90 3200 2600 580 5300 <br /> 5/9/90 1800 910 130 1600 <br /> 10/03/90 4700 530 39 1600 <br /> 2/1191 960 720 42 880 -- <br /> 4/16/91 3000 570 29 660 <500 <br /> 7122191 4100 800 I20 950 39000 -- <br /> 1 10/22/91 1400 360 27 450 6200 -- <br /> 2/11/92 480 210 22 490 4100 <br /> 5/I2/92 9500 850 260 2200 34000 -- <br /> 8/18/92 2I0 <5 (a) 8 8 <3(g) 1,200 --11/17/92 5 2 0 8 <0 5 10 1,000 -- <br /> 2/23/93 <1(h) <0 5 <0 5 <0 5 <50 <br /> 5/26193 <0 5 <0 5 <0 5 <05 <50 -- <br /> 1 8/24/93 <0 5 <0 5 <0 5 <0 5 <50 == <br /> 11/17/93 <0 5 <0 5 <0 5 <05 <50 <br /> 3122194 0 4 0 4 <0 3 05 <10 <br /> 16123194 2 4 2 2 0 8 5 5 22 -- <br /> 9/28/94 I 8 <0 5 <0 5 <05 <50 <br /> 12/19/94 <0 5 <0 5 <0 5 <05 <50 -- <br /> 3/2/95 <0 5 <0 5 <0 5 <05 <50 <br /> 1 5/19/95 <0 5 <0 5 <0 5 <0 5 <50 <br /> 8110/95 <0 5 <0 5 <0 5 <05 <50 <br /> 11/17/95 <0 5 <0 5 <0 5 <05 <50 <3 <br /> 1 2/14/96 <0 5 <0 5 <0 5 <05 <50 -- <br /> 5/9/96 <0 5 <0 5 <0 5 <05 <50 <br /> 1 <br /> i <br /> 1 <br /> 1 <br />