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aquifer properties at Trapper Mine. The permeabilities from the backfill aquifers are • <br />significantly greater than the coal aquifers that they replace. <br />The QR water-level map at Trapper Mine was very similar in 2000 to the 1999 <br />water-level elevations. Gradients and flow directions for the QR aquifer in 2000 are similar <br />to those observed in 1999. <br />Map No. 2-2 presents the water-level elevation contours for the HI aquifer in the <br />Fall of 2000. Wells GB-5, GC-1, GE-2, GF-4, GP-3, GP-7, and GMP-1, which are completed <br />in the HI aquifer, and backfill wells GF-5 and GF-7, were used in the development of this <br />map. Wells GF-5 and GF-7 are completed in the backfill in the area where the H and I coal <br />seams were mined. Flow direction in the HI aquifer has been changed mainly near the A <br />pit near well GF-4. The overall flow regime in this aquifer is northerly, similar to that <br />observed in 1999 (see Hydro-Engineering, 2000). The ground-water gradient between the • <br />baddill aquifer and the un-mined HI aquifer downgradient is relatively flat as it is in the QR <br />backfill. The contours in the HI aquifer have also been changed on the east side of the <br />active A pit. <br />The 3rd White Sandstone aquifer water-level elevations are presented on Map <br />No. 2-3. Wells GB-2, GC-2, GE-3, P-8, 81-03A, and GP-9 were used in the development of <br />this map. Flow direction in the 3rd White Sandstone is mainy toward the north, as <br />expected. Data from wells GE-3 and 81-03A indicate that the 3rd White Sandstone water <br />flows toward the west between these two wells and probably toward a discharge to an <br />adjacent aquifer or to the surface. The 2000 contours are very similar to those observed <br />over the last few years. <br />• <br />2-10 <br />