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the northern end of the backfill aquifer will likely recover above the pre-mine level. Table 2-1 of <br />the 1990 Annual Hydrologic Report (Hydro-Engineering, 1991) presents aquifer properties at <br />Trapper Mine. The permeabilities from the backfill aquifers are significantly greater than the coal <br />aquifers which they replace. <br />Additional drawdown east of D pit and the overall water-level rise on the west side are <br />the main changes in the QR water-level map at Trapper Mine. A water level increase of roughly <br />13 ft. at well GE] has slightly affected the contours near this well. Gradients and flow directions <br />for the QR aquifer in 1994 are similar to those observed in 1993. <br />Map No. 2-2 presents the water-level elevation contours for the HI aquifer in the fall of <br />1994. Wells GBS, GC1, GE2, GF4, GP3, GP7, and GMP-I which are completed in the HI aquifer, <br />and backfill wells GFS and GF7, were used in the development of this map. Wells GFS and GF7 <br />are completed in the backfill in the area where the H and I coal seams were mined. Flow in the HI <br />aquifer has been changed mainly near the A, D, and E pits and the former B and C pits, now <br />recovering. The overall flow regime in this aquifer is northerly, similar to that observed in 1993 <br />(see Hydro-Engineering, 1994). The ground-water gradient between the backfill aquifer and the <br />unmined HI aquifer downgradient is relatively flat as it is in the QR backfill. The main change in <br />the HI contours is near the active A pit in the Pyeatt drainage. Small changes in the contours near <br />wells GE2 and GP3 are due to iarge changes in the water levels since 1993. <br />The 3rd White Sandstone aquifer water-level elevations are presented on Map No. 2-3. <br />Wells G$2, GC2, GE3, P8, 81-03a, and GP9 were used in the development of this map. Flow <br />direction in the 3rd White Sandstone is mainly toward the north, as expected. Additional data from <br />wells GE3 and 81-03a indicate that the 3rd White Sandstone water flows toward the west between <br />2-10 <br />• <br />