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Table I 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 /> 9/24/91 1129 3739 -023 <br /> 1123192 1096 3772 033 <br /> 4/20/92 1088 3780 008 <br /> 7/8/92 1106 3762 -018 <br /> 10/7/92 11 16 3752 -010 <br /> 1/18/93 1034 3834 082 <br /> 4114/93 1070 3798 -036 <br /> 8/30/93 11 17 3751 -047 <br /> 10/27/93 1123 3745 -006 <br /> ATR-10 <br /> 10/16/90 4807 - - - <br /> 10/19/90 1020 3787 - <br /> 1/10/91 1007 3800 0 13 <br /> 4110191 1000 3807 007 <br /> 7/12/91 1021 3786 -021 <br /> 9/24/91 1032 3775 -011 <br /> 1123192 1000 3807 032 <br /> 4120192 toot 38 06 -001 <br /> 7/8/92 10 17 3790 -016 <br /> 10/7192 1023 3784 -006 <br /> 1/18/93 961 3846 062 <br /> 4/14/93 994 38 13 -033 <br /> 8/30/93 1023 3784 -029 <br /> 10/27/93 1024 3783 -001 <br /> ATR-11 <br /> 8/25/91 4684 - - - <br /> 9/24/91 950 3734 - <br /> 1/23/92 895 3789 055 <br /> 4120192 878 3806 0 17 <br /> 7/8192 9 12 3772 -034 <br /> 10/7/92 930 3754 -018 <br /> 1/18/93 780 3904 1 50 <br /> 4/14193 8.17 3837 -067 <br /> 8131193 938 3746 -091 <br /> 10/27/93 931 3753 007 <br /> ATR-12 <br /> I0116/90 4708 - - = <br /> 10/19/90 9 33 3775 <br /> 1/10/91 9 16 3792 0 17 <br />