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Table 1. Water-Level EIevations <br /> ARCO Station 2093,Tracy, California(cont'd) <br /> Top-of-Casing Depth to Grattndwater Change since <br /> Well No and Elevation Water Elevation Last Measurement <br /> date feet a feet feet feet <br /> 1/23/92 1078 3795 051 <br /> 4/20/92 1070 3803 008 <br /> 718192 10.97 37.76 -0.27 <br /> ATR-6 <br /> 3/10/89 4935 - - - <br /> 6/21/89 (b) 1154 3781 - <br /> 9/18/89 (b) 1160 3775 -006 <br /> 1287/89 (b) 11.57 3778 003 <br /> 4/18/90 (b) 1168 3767 -011 <br /> 10/16/90 - <br /> 10/19/90 1180 3755 - <br /> 1/10/91 1164 3771 016 <br /> 4/10/91 1152 3783 012 <br /> 7/10/91 1176 3759 -024 <br /> 9/24/91 11.95 3740 -019 <br /> 1/23/92 1166 3769 029 <br /> 4/20/92 1156 3779 010 <br /> 7/8/92 1L72 37.63 -0.16 <br /> ATR-7 <br /> 3/10/89 4965 - - . <br /> 6/21/89 1190 3775 - <br /> 9/18/89 11.98 3767 -008 <br /> 1287/89 11.94 3771 004 <br /> 4/18/90 1201 3764 -007 <br /> 10/16/90 _ _ » <br /> 10/19/90 12.20 3745 - <br /> 4/10/91 - - _ <br /> 7/10/91 - _ <br /> 9/24/91 12.34 3731 - <br /> 183/92 — — <br /> 4/20/92 <br /> 7/8192 -- -- -- <br /> ATR-8 <br /> 8/25/91 4598 - - - <br /> 9/25/91 885 3713 - <br /> 1/23/92 819 37.69 0.56 <br /> 480/92 811 3787 018 <br /> 7/8192 8.49 3750 4037 <br /> ATR-9 <br /> 10/16/90 4868 - - <br /> 10/19/90 11.11 3757 - <br /> 1/10/91 1104 3764 007 <br /> 4/10/91 1082 3786 0.22 <br /> 7/10/91 1106 3762 -0.24 <br /> 9/24/91 1129 3739 -023 <br />