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Table 1. Summary of Groundwater Monitoring Data: Water Elevations and Analyses s - <br /> ARCO Facility 434, Lodi, California <br /> Top-of-casing Depth-to- Water-level Change since <br /> Well number elevation, water, elevation, last measurement, Concentrations in L <br /> and date in feet(a) in feet in feet in feet Benzene Toluene Eth lbenzene Xylenes TPh1-G Ml3TE <br /> 1014188 58.79 -16.31 -3.39 <br /> 114189 56.43 -13.95 2.36 <br /> 1/6/89 -- -- -- 2250 4320 210 2600 -- -- <br /> 414189 54.79 -12.31 1.64 <br /> 416/89 -- -- -- 2990 70 240 2380 -- -- <br /> 719189 59.14 -16.66 -4.35 <br /> 7/11/89 -- -- -- 1480 520 70 420 -- -- <br /> 10/16/89 59.84 -17.36 -0.70 <br /> 10/17/89 -- -- -- 669 253 33 280 20000 1/18/90 57.40 -14.92 2.44 <br /> 1/19/90 -- -- 3200 2600 580 5300 -- -- <br /> 5/9/90 42.46 58.62 -16.16 -1.24 1800 9 10 130 1600 -- -- <br /> 10/02/90 64.01 -21.55 -5.39 <br /> 1013190 -- -- -- 4700 530 39 1600 -- -- <br /> 1/29191 60.72 -18.26 3.29 <br /> 2/1/91 -- -- -- 960 720 42 880 <br /> 3/15/91 59.40 -16.94 1.32 <br /> 4116/91 -- -- -- 3000 570 29 660 <500 -- <br /> 7/22/91 62.93 -20.47 -3.53 4100 800 120 950 39000 -- <br /> 10/22/91 64.64 -22.18 -1.71 1400 360 27 450 6200 -- <br /> 2110192 61.52 -19.06 3.12 <br /> 2/11/92 -- -- -- 480 210 22 490 4100 -- . <br /> 5/12/92 61.09 -18.63 0.43 9500 850 260 2200 34000 -- <br /> 8/18/92 66.09 -23.63 -5.00 210 <5 8.8 <5 1,200 11/17/92 65.92 -23.46 0.17 5.2 0.8 <0.5 1.0 1,000 -- <br /> 2/22/93 63.53 -21.07 2.39 <br /> 2/23/93 -- -- -- <1 <0.5 <0.5 <0.5 <50 -- <br /> 5/25/93 62.79 -20.33 0.74 <br /> 5126/93 -- -- <0.5 <0.5 <0.5 <0.5 <50 -- <br /> 8123/93 67.13 -24.67 -4.34 <br /> 8124193 -- -- -- <0.5 <0.5 <0.5 <0.5 <50 <br /> 11/17/93 64.05 -21.59 3.08 <0.5 <0.5 <0.5 <0.5 <50 -- <br /> 3/22/94 60.47 -18.01 3.58 0.4 0.4 <0.3 0.5 <10 -- <br /> 6123194 62.41 -19.95 -1.94 2.4 2.2 0.8 5.5 22 -- <br /> 9/28/94 66.53 -24.07 -4.12 1.8 <0.5 <0.5 <0.5 <50 -- <br /> I <br /> 33821'1'AB LES1434NOV6.XI_S <br />