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Table 1. Water-Level Elevations <br /> ARCO Station 2093, Tracy, California (continued) <br /> Top-of-Casing Depth to Groundwater Change since <br /> Well No and Elevation Water Elevation Last Measurement <br /> date (feet)(a) (feet) (feet) (feet) <br /> ATR.5 <br /> 3/10/89 4873 - - - <br /> 6/29/89 (c) 1052 3821 - <br /> 9/18/89 (c) 1098 3775 -046 <br /> 12/27/89 (c) 1076 3797 022 <br /> 4/18/90 (c) 1090 3783 -014 <br /> 10/16/90 - - - <br /> 10/19/90 1110 3763 - <br /> 1/10/91 1094 3789 026 <br /> 4/10/91 1067 3806 017 <br /> 7/10191 1102 3771 -035 <br /> 9/24191 1129 3744 -027 <br /> 1/23192 1078 3795 051 <br /> 4/20192 1070 3803 008 <br /> 718/92 1097 3776 -027 <br /> 10/7/92 11 11 3762 -0 14 <br /> 1/18193 9.94 38.79 1.17 <br /> ATR-6 <br /> 3/10/89 4935 - - - <br /> 6/21/89 (c) 1154 3781 - <br /> 9/18/89 (c) 1160 3775 -006 <br /> 12/27/89 (c) 1157 3778 003 <br /> 4/18/90 (c) 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 /> 9/24191 1195 3740 -019 <br /> 1/23/92 1166 3769 029 <br /> 4/20/92 1156 3779 010 <br /> 7/8/92 1172 3763 -016 <br /> 10/7/92 1182 3753 -010 <br /> 1118/93 11.04 38.31 0.78 <br /> ATR-7 <br /> 3/10/89 4965 - - - <br /> 6/21/89 1190 3775 - <br /> 9/18/89 1198 3767 -008 <br /> 12/27/89 1194 3771 004 <br /> 4/18/90 1201 37 64 -007 <br /> 10/16/90 <br /> 10/19/90 1220 3745 <br /> - <br /> 4/10/91 - - - <br /> 7/10/91 - - - <br /> 9/24/91 1234 3731 - <br /> 1/23/92 -- -- -- <br />