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Table 1. Water-Level Elevations for <br /> ARCO Facility 2093, Tracy, California <br /> Top-of-casing, Depth-to- Floating Water-level Chane since <br /> Well number elevation, water, product thickness elevation last measurement, <br /> and date to feet(a) in feet in feet in feet(b) to feet <br /> ATR-1 <br /> 4/23/87 50 58 1249 -- 38 09 <br /> 12/22/87 1263 -- 3795 -014 <br /> 3124/88 1254 3804 009 <br /> 6/23/88 1283 3775 -029 <br /> 9129188 1301 -- 3757 -018 <br /> 2/22/89 1246 -- 38 12 055 <br /> 6/21/89 1237 -- 3821 009 <br /> 9/18/89 12 88 -- 3770 -051 <br /> 12/27/89 1268 -- 3790 020 <br /> 4/18/90 1284 -- 3774 -016 <br /> 10/16/90 <br /> 10/19/90 13 10 3748 -026 <br /> 1/10/91 1278 3780 032 <br /> 4110/91 1252 -- 3806 026 <br /> 7/10/91 1295 -- 3763 -043 <br /> 9/24/91 13 30 - 3728 -035 <br /> 1/23/92 1277 3781 053 <br /> 4/20/92 12 58 3800 019 <br /> 7/8/92 1290 -- 3768 -032 <br /> 10/7/92 13 09 -- 3749 -019 <br /> 1/18/93 (c) - <br /> 4/14/93 12 31 -- 3827 078 <br /> 8/30/93 13 18 -- 3740 -087 <br /> 10/27/93 13 13 - 3745 005 <br /> 2/18/94 1265 - 3793 048 <br /> 5/20/94 1271 37 87 -006 <br /> 10/7/94 13 14 -- 3744 -043 <br /> 12/16/94 1274 3784 04 <br /> 2/28/95 1265 -- 3793 009 <br /> 4/26/95 1290 -- 3768 -025 <br /> 7/27195 1322 -- 3736 -032 <br /> ATR-2 <br /> 4/23/87 4922 1 1 28 - 3794FO <br /> 12/22/87 11 40 - 37823/24/88 11 35 -- 37876123/88 11 55 -- 37679/29/88 11 71 -- 37512122/89 11 35 -- 37876/21/89 11 45 3777 <br /> 9/18/89 11 65 -- 3757 -020 <br /> 12/27/89 11 50 3772 015 <br /> 4/18/90 11 64 -- 3758 -014 <br /> 10/16/90 11 81 -- 3741 -0 17 <br /> 10/19/90 11 81 -- 3741 000 <br /> 1/10/91 11 58 -- 3764 023 <br /> 4/10/91 It 35 -- 3787 023 <br /> 7/10/91 11 74 -- 3748 -039 <br /> 9124/91 1202 -- 3720 -028 <br /> 1123192 11 60 -- 3762 042 <br />