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2.0 GROUND-WATER LEVELS <br />Water levels or water pressure have been measured in 39 wells at Trapper Mine. Wells <br />GD2, GFl, GF3, GP3, GP4, and well 81-03a are flowing wells and pressure readings on these wells <br />have been converted to static water head in feet above land surface. Well GDl (2) is not measured for <br />water level because a pump is installed in this well. Monitoring wells GD3, GFl 1, and GLUX-1 were <br />installed in 1988 and well GMP-1 was installed in 1990. <br />The Well GA2 went dry between the 2nd and 3rd quarters and remained dry for the <br />remainder of 1994. Well GD2 had a frozen and broken well head during the first quarter of 1994. The <br />well head was later repaired and water level readings were taken for the 2nd, 3rd and 4th quarters of <br />1994. <br />The locations of these monitoring wells aze shoHm on enclosed Maps No. 2-1 through 2-3. <br />Wells GD1(2) and GF1 are completed in the Twenty Mile Sandstone, while well GF2 is completed <br />• below the R coal in the U aquifer system. Seven wells, GAI, GE1, GD2, GF6, GP1, GPS, and GP6 are <br />used to monitor the QR aquifer. Wells GD3 and GFI 1 are completed in backfill derived from the QR <br />aquifer and, therefore, are also used to monitor the QR aquifer. Wells GA2, GB1, GF3, GP2, GP4, and <br />GP8 aze used to monitor the KLM aquifer. Seven wells, GBS, GC 1, GE2, GF4, GP3, GP7, and GMP-1 <br />are used to observe changes in the HI aquifer. Wells GFS and GF7 are completed in backfill material <br />derived from the HI aquifer and are also used to monitor the HI aquifer. Wells GB2, GC2, GE3, P8, <br />81-03a, and GP9 are used to monitor the 3rd White Sandstone aquifer. Well GE3 is completed in both <br />the 2nd and 3rd white sandstone and well PS are completed in the 2nd White Sandstone between the <br />G and F coals, while GLUX-1 is used to monitor the First White Sandstone. Well P3 is perforated in <br />the Lewis Shale. Four alluvial wells, GC3, P1, J1, and COY are rued to monitor the Flume, Pyeatt, and <br />• Johnson alluviums. <br />2-1 <br />