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i <br /> 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 TPI(-G MBTE <br /> 10/16/89 58.53 -17.31 -0.02 -- -- -- -- <0.05 <br /> 1/19/90 Dry -- -- -- -- -- -- -- <br /> 5/10/90 <br /> -5/10/90 41.20 57.75 -16.55 0.76 <0.3 <0.3 <0.3 <0.3 -- -- <br /> 10/02/90 63.72 -22.52 -5.97 -- -- -- -- -- -- <br /> 10/5/90 -- -- -- <0.5 <0.5 <0.5 <0.5 --1/29/91 59.45 -18.25 4.27 <0.5 <0.5 <0.5 1.3 -- -- <br /> 3/15/91 58.75 -17.55 0.70 -- -- -- -- -- <br /> 4/18/91 <br /> -4/18/91 -- -- <0.5 <0.5 <0.5 <0.5 <50 -- <br /> 7/22/91 61.76 -20.56 -3.01 -- -- -- -- -- <br /> 7/25/91 -- -- -- <0.5 <0.5 <0.5 <0.5 <50 -- <br /> 10/22/91 62.95 -21.75 -1.19 -- -- -- -- -- <br /> 10/24/91 -- -- -- <0.5 <0.5 <0.5 <0.5 <50 -- <br /> 2/10/92 60.31 -19.11 2.64 0.5 <0.5 <0.5 <0.5 <50 -- <br /> 5112/92 60.03 -18.83 0.28 <0.5 <0.5 <0.5 <0.5 <50 <br /> 8/18/92 65.14 -23.94 -5.11 <0.5 <0.5 <0.5 <0.5 <50 -- <br /> 11/17/92 65.01 -23.81 0.13 <0.5 <0.5 <0.5 <0.5 <50 -- <br /> 2/22/93 62.57 -21.37 2.44 <0.5 <0.5 <0.5 <0.5 <50 -- <br /> 5/25/93 61.95 -20.75 0.62 <0.5 <0.5 <0.5 <0.5 <50 -- <br /> 8/24/93 66.30 -25.10 -4.35 <0.5 <0.5 <0.5 <0.5 <50 -- <br /> 11/16/93 62.94 -21.74 3.36 <0.5 <0.5 <0.5 <0.5 <50 -- <br /> 3/22/94 59.27 -18.07 3.67 <0.3 <0.3 <0.3 <0.5 <10 -- <br /> 6/23/94 62.07 -20.87 -2.80 <0.3 <0.3 <0.3 <0.5 <10 -- <br /> 9/28/94 65.60 -24.40 -3.53 <0.5 <0.5 <0.5 <0.5 <50 <br /> 12/19/94 63.02 -21.82 2.58 <0.5 <0.5 <0.5 <0.5 <50 -- <br /> 3/2/95 61.09 -19.89 1.93 <0.5 <0.5 <0.5 <0.5 <50 <br /> 5/18/95 59.34 -18.14 1.75 -- -- -- -- -- <br /> 5/19/95 <br /> -5/19/95 -- -- -- <0.5 <0.5 <0.5 <0.5 <50 <br /> 8/10/95 63.03 -21.83 -3.69 -- -- -- -- -- <br /> 9/11/95 <br /> -8111/95 -- -- -- <0.5 <0.5 <0.5 <0.5 <50 -- <br /> 11/17/95 61.91 -20.71 1.12 -- -- -- -- -- <br /> 2/14/96 <br /> -2/14/96 59.25 -18.05 2.66 <0.5 <0.5 <0.5 <0.5 <50 -- <br /> 5/9/96 58.76 -17.56 0.49 -- -- -- -- -- -- <br /> 9/6/96 63.07 -21.87 -4.31 <0.5 <0.5 <0.5 <0.5 <50 <5 <br /> 11/22/96 61.00 -19.80 2.07 -- -- -- -- -- -- <br /> 3382A'ABLES1434NOWALS <br /> I <br />