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2.0 GROUND-WATER LEVELS <br />Water level or water pressure have been measured in 36 wells at Trapper Mine. <br />Wells GD-2, GF-3, GF-4, GP-3, GP-4, and well 81-03A were flowing wells in 2003 and <br />pressure readings on these wells have been converted to static water head in feet above <br />the measuring point. The water levels are prefixed by a negative sign to indicate a water <br />level above the land surface. Wells GA-1 and GA-2 were de~royed by mining in 1996 (see <br />Hydro-Engineering, LLC., 1997 for where these two wells were located) and well GP-1 was <br />destroyed by mining in 2003 (see Hydro-Engineering, LLC 2003). <br />The locations of the monitoring wells are shown on enclosed Maps No. 2-1 <br />through 2-3. Wells GD-i(2) and GF-1 are completed in the Twenty Mile Sandstone, while <br />welt GF-2 is completed below the R coal in the U aquifer system. Five wells, GE-1, Go-2, <br />GF6, GP-S, and GP-6 are used to monitor the QR aquifer. Wells GD-3 and GFli are <br />completed in backfill derived from the QR aquifer and, therefore, are also used to monitor <br />the QR aquifer. Wells GB-1, GF-3, GP-2, GP-4, and GP-8 are used to monitor the IaM <br />aquifer. Seven wells, GB-5, GC-1, GE-2, GF~, GP-3, GP-7, and GMP-1 are used to observe <br />changes in the HI aquifer. Wells GF-5 and GF7 are wmpleted in bacidill material derived <br />from the HI aquifer and are also used to monitor the HI aquifer. Wells GB-2, GC-2, GE-3, <br />P-8, 81-03A, and GP-9 are used to monitor the 3rd White Sandstone aquifer. Well GE-3 is <br />completed in both the 2nd and 3rd White Sandstone and weH P-5 are completed in the 2nd <br />White Sandstone between the G and F coals, while GLUX-1 is used to monitor the 1st White <br />Sandstone. Well P-3 is perforated in the Lewis Shale. Four alluvial wells, COY, GC-3, P-1 <br />and J-1, are used to monitor the Flume, Pyeatt, and Johnson alluviums. <br />2-1 <br />