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<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 QR <br />aquifer-in-these areas. Gradients and flow directions in the QR <br />aquifer for 1990 are similar to those observed in 1989. <br />Map No. 2-2 presents the water-level elevation contours for <br />the HI aquifer for the Fall of 1990. Wells GB5, GC1, GE2, GF4, <br />GP3, GP7 and GMP-1 which are completed in the HI aquifer, and <br />backfill wells GF5 and GF7, were used in the development of this <br />map. Wells GF5 and GF7 are completed in the backfill in the area <br />where the H and I coal seams were mined. Flow in the HI aquifer <br />has been changed mainly at the A, B, C, D and E pits. The overall <br />flow regime in this aquifer is close to that observed in 1989 (see <br />i Hydro-Engineering, 1990). The ground-water gradient between the <br />backfill aquifer and the unmined HI aquifer downgradient is <br />relatively flat as it is in the QR backfill. The main change in <br />the HI contours is near the new A pit in the Pyeatt drainage. <br />The Third White Sandstone aquifer piezometric levels are <br />presented on Map No. 2-3. Wells GB2, GC2, GE3, P8, 81-03a and GP9 <br />were used in the construction of this water-level elevation map. <br />Flow direction in the Third White Sandstone is mainly toward the <br />north, as expected. Data from wells GE3 and 81-03a indicate that <br />the Third White Sandstone water flows toward the west between <br />these two wells and probably toward a discharge point: <br /> <br />2-16 <br />