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• drawdowns are not thought to be caused by Trapper dewatering. <br />Some rise of the contour elevations north of D and E pits could <br />have occurred by the movement of additional water into the OR <br />aquifer in these areas. Gradients and flow directions in the OR <br />aquifer for 1988 are similar to those observed in 1987. <br />Map No. 2-2 presents the water-level elevation contours for <br />the HI aquifer for the Fall of 1988. Wells GBS, GC1, GE2, GF4, <br />GP3 and GP7 which are completed in the HI aquifer, and backfill <br />wells GFS and GF7, were used in the development of this map. <br />Wells GF5 and GF7 are completed in the backfill in the area where <br />the H and I coal seams were mined. Flow in the HI aquifer has <br />been changed mainly at the A, D and E pits. The overall flow <br />regime in this aquifer is close to that observed in 1987 (see <br />• Hydro-Engineering, 1988). The ground-water gradient between the <br />backfill aquifer and the unmined HI aquifer downgradient is <br />relatively flat as it is in the OR backfill. <br />The Third White Sandstone aquifer piezometric levels are <br />presented on Map No. 2-3. Wells GB2, GC2, GE3, P8, B1-03a and <br />GP9 were used in the construction of this water-level elevation <br />map. Flow direction in the Third White Sandstone is mainly <br />toward the north, as expected. Data from wells GE3 and 81-03a <br />indicate that the Third White Sandstone water flows toward the <br />west between these two wells and probably toward a discharge <br />point. <br />2.3 AQUIFER PROPERTIES <br />• Three new wells were completed during 1988 including two new <br />backfill wells, GF11 in E pit and well GD3 in D pit. The third <br />2-14 <br />