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Table 1. Summary of Groundwater Monitoring Data:, Water Elevations and Analyses <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 (benzene Xylenes TPH-G MBTE <br /> 7/22/91 62,25 -20.81 -3.10 <br /> 7125191 -- -- -- 3.5 0.6 <0.5 <0.5 270 -- <br /> 10/22/91 63.45 -22.01 -1.20 <br /> 10/24/91 -- -- -- <0.5 <0.5 <0.5 <0.5 <50 <br /> 2/10/92 60.65 -19.21 2.80 <0.5 <0.5 <0.5 <0.5 80 <br /> 5/12/92 60.38 -18.94 0.27 <0.5 <0.5 <0.5 <0.5 70 -- <br /> 8/18/92 65.49 -24.05 -5.11 <0.5 <0.5 <0.5 <0.5 <50 -- <br /> 11/16/92 65.28 -23.84 0.21 <0,5 <0,5 <0.5 <0.5 <50 -- <br /> 2/22/93 62.90 -21.46 2.38 <0.5 <0.5 <0.5 <0.5 <50 -- <br /> 5/25/93 62.27 -20.83 0.63 <0.5 <0.5 <0.5 <0.5 <50 -- <br /> 8123/93 66.71 -25.27 -4.44 <0,5 <0.5 <0.5 <0.5 <50 -- <br /> 11/16/93 63.42 -21,98 3.29 <0.5 <0.5 <0,5 <0,5 <50 -- <br /> 3/22/94 -- -- -- -- -- -- -- -- -- <br /> 6/23194 <br /> 9/28/94 65.95 -24.51 -2.53 <0.5 <0.5 <0.5 <0.5 <50 -- <br /> 12/19/94 63.60 -22.16 2.35 <0.5 <0.5 <0.5 <0.5 <50 -- <br /> 3/2/95 61.44 -20.00 2.16 <0.5 <0.5 <0.5 <0.5 <50 -- <br /> 5/18/95 59.68 -18.24 1.76 <0.5 <Q,5 <0.5 <0.5 <50 -- <br /> 8/10/95 63.44 -22.00 -3.76 <br /> 8111/95 -- -- -- <0.5 <0.5 <0.5 <0.5 <50 -- <br /> 11/17/95 62.41 -20.97 1.03 <br /> 2/14/96 59.70 -18.26 2.71 <0,5 <0,5 <0.5 <0.5 <50 -- <br /> 5/9/96 59.25 -17.81 0.45 -- -. -- -- -_ <br /> 916/96 63.58 -22.14 -4.33 <0.5 <0.5 <0.5 <0.5 <50 <5 <br /> 11122/96 61.41 -19.97 2.17 <br /> W-8 41.22 <br /> 11/13/87 -- -- -- <0.5 <0.5 <0.5 <0.5 <0.2 -- <br /> 11/18/87 53.08 -11.86 <br /> 2/1/88 51.11 -9.89 1.97 <0.5 <0.5 <0.5 <0.5 -- -- <br /> 6/24/88 54.59 -13.37 -3.48 <br /> 9128188 57.88 -16.66 -3.29 <br /> 10/4/88 57.89 -16.67 -0.01 -- -- <br /> 4/4/89 53.80 -12.58 4.04 <br /> 7/9/89 58.51 -17.29 -4.71 -- -- -- -- <br /> 33821TABLES1434N0 V6.XLS <br />