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<br />TABLE 3.4-1 <br />SUMMARY OF AMERICAN SODA WELLS AT THE PICEANCE SITE <br /> <br /> <br />Well <br />Number <br /> <br />Date <br />Completed <br /> <br />Aquifer <br />Monitored Open or <br />Screened <br />Interval <br />(k-bge) <br /> <br />Well <br />Material Ground <br />Surface <br />Elevation <br />(k-msl) <br />Total <br />Depth <br />(k-bgs) Static <br />Water <br />Level <br />(ft-bgs) Water <br />Leval <br />Elevation <br />(k-msl) Depth to <br />A-Groove <br />Top Bolcom <br />(k-bgs) (k-bps) Depth to <br />B-Groove <br />-'Top Bottom <br />(k-bgs) (k-bgs) epth to <br />Dissolution <br />Surface <br />(k-bgs) <br />ALLUVIAL AQUIFER <br />21-2 16-May-97 Alluvial 82 to 92 2" PVC 6110.8 95 70 6040.8 n/e n/e n/e n/e n/e <br />UPPER AQUIFER <br />19-2 16-May-98 A Groove 1260 to 1270 2" PVC 6620.58 2820 474.72 6145.86 1274 1243 1456 1469 1896 _ <br />29-3 14-Feb-98 A Groove 1018 to 1028 2"PVC 6381.56 2353 278.50 6103.06 1013 1032 1208 1235 1600 <br />20-5 14-May-97 Uinta 632 to 642 2" PVC 6205.19 650 106.67 6098.52 n/e n/e n/e n/e n/e <br />20-10 TBP Uinta TBP 2" PVC 6566.45 TBP 424.45 6]42 TBP TBP TBP TBP TBP <br />20-St 28-Jan-98 Uinta 534 to 554 7" Steel 6235 560 158 6077 n/e n/e n/e n/e n/e <br />LOWER AgUIFER <br />20-I 18-May-97 Dissolution Surface 1348 to 1397 Open 6232.94 2248 145.25 6087.69 830 845 .1025 1048 1404 <br />20-2 24-Apr-98 Dissolution Surface 1584 to 2300 Open 6268 2300 1591 <br />29-2 27-Jun-98 Dissolution Surface 1352 to 1362 2" PVC TBP 2133 6119.84 832 853 1023 1040 1365 <br />20-4 23-Jul-98 B-Groove 1240 to 1250 2" PVC 6420.36 2493 281.11 6138.25 1023 1038 1231 1251 1636 <br />20-9 23-Jan-98 B-Groove 1114 to 1124 2" PVC 6237.47 2150 128.84 6108.63 846 871 1030 1059 1423_ <br />20-32 IS-Jan-97 2180 to 2217 Open 6230 2217 837 851 1034 1054 1401 <br />Note: Water levels for wells 19-2, 29-3, 20-5, 20-10, 20-I, 29-2, 20-4, 20-9 were measured on September 21, 1998. <br />fl-bgs feet below ground surface <br />fl-msl feet above mean sea level <br />n/e not encountered <br />~ Well 20-8 is being used az the water supply well for the test mine operations; water level data may not represent the potentiometric surface. <br />r Well 20-3 is being used es one of the solution mining wells for the test mine operations; water level data may not represent the potentiometric surface. <br />Source: Colorado State Engineer's Otlice, American Soda. <br />3~6JVr3U~-I al, f/V I99~(10 ~] AMyaPTA Sheet 1 of I <br />