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Table 1 Water-Level Elevations <br /> ARCO Station 2093, Tracy, California (cont'd) <br /> Top-of-Casing Depth to Floating Groundwater Change since <br /> Well No and Elevation Water Product Elevation Last Measurement <br /> date (feet) (a) (feet) Thickness, (feet) (feet) (feet) <br /> 10/16/90 - -- _ _ <br /> 10/19/90 1180 -- 3755 - <br /> 1/10/91 1164 -- 3771 016 <br /> 4110/91 11 52 -- 3783 012 <br /> 7/10/91 1176 3759 -024 <br /> 9/24/91 1195 -- 3740 -019 <br /> 1/23192 1166 -- 3769 029 <br /> 4/20192 11 56 3779 010 <br /> 7/8192 11 72 -- 3763 -0 16 <br /> 10/7/92 11 82 -- 3753 -010 <br /> 1/18/93 11 0.4 -- 3831 078 <br /> 4/14/93 1142 -- 3793 -038 <br /> 8/31/93 (e) - _ _ <br /> 10/27/93 1184 -- 3751 -042 <br /> 2/17/94(e) .- -- -- -- <br /> Al R-7 <br /> 3/10189 4965 _- <br /> 6/21/89 1190 37 75 _ <br /> 9/18189 1198 -- 3767 -008 <br /> 12/27/89 1194 -- 37 71 004 <br /> 4/18/90 1201 - 3764 -007 <br /> 10/16/90 - -- _ _ <br /> 10/19/90 1220 -- 3745 <br /> 4/10/91 __ - _ <br /> 7/10/91 - __ _ _ <br /> 9/24/91 1234 -- 37 31 - <br /> 1/23/92 <br /> 4/20/92 <br /> 718/92 <br /> 1017/92 1221 -- 3744 -- <br /> 1/18/93 1133 -- 38 32 088 <br /> 4/14/93 1175 -- 3790 -042 <br /> 8131/93 1224 -- 3741 -049 <br /> 10/27/93 1223 -- 3742 001 <br /> 2/18/94 1193 -- 3772 030 <br /> ATR-8 <br /> 8125191 4598 - -- - _ <br /> 9/25191 885 -- 37 13 - <br /> 1/23/92 829 -- 3769 056 <br /> 4/20/92 8 It -- 3787 018 <br /> 7/8/92 848 3750 -037 <br /> 10/7/92 869 3729 -021 <br />