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Table 1. Water-Level Elevations <br /> ARCO Station 2093, Tracy, California(cont'd) <br /> MTop-of-Casing Depth to Groundwater Change since <br /> Well No and Elevation Water Elevation Last Measurement <br /> date feet a feet feet feet <br /> 2=89 1182 38 11 041 <br /> 6/29/89 - - - <br /> 9/18/89 12.19 3774 - <br /> 1212,8/89 1101 3792 018 <br /> 4/18/90 12.15 3778 -014 <br /> 10/16/90 1235 3758 -020 <br /> 10/19/90 12.28 3765 007 <br /> 1/10/91 12.01 3792 027 <br /> 4/10/91 1182 3811 019 <br /> 7/10/91 12.23 3770 -041 <br /> 9/24/91 1257 3736 -034 <br /> 1/23/92 1212 3781 045 <br /> 4/20/92 1L93 38.00 0.19 <br /> ATR-4 <br /> 4/23/87 4903 1085 3818 - <br /> 12/22/87 1100 _ 3803 -015 <br /> 384/88 1098 3805 002 <br /> 6/23/88 12-11 3692 -113 <br /> 9/29188 1072 3831 139 <br /> 2/22/89 1091 3812 -019 <br /> 6/29/89 1100 3803 -009 <br /> 9/18/89 1119 3784 -019 <br /> 12/2889 1108 3795 Oil <br /> 4/18/90 11.25 3778 -017 <br /> 10/16/90 11-38 3765 -013 <br /> 1/10/91 1116 3787 022 <br /> 4/10/91 1099 3804 017 <br /> 7/10/91 1132 3771 -033 <br /> 9/24/91 1157 3746 -025 <br /> 1/23/92 1116 3787 041 <br /> 4/10/92 1 L12 37.91 0.04 <br /> ATR-5 <br /> 3/10/89 4873 - - - <br /> 6/29/89 (b) 1052 3821 - <br /> 9/1889 (b) 1098 3775 -046 <br /> 12/27/89 (b) 1076 3797 022 <br /> 4/18/90 (b) 1090 3783 -014 <br /> 10/16/90 - - - <br /> 10/19/90 1110 3763 - <br /> 1/10/91 1084 3789 026 <br /> 4/10/91 1067 3806 017 <br /> 7/10/91 1102 3771 -035 <br />