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<br />2.2 GROUND WATER-LEVEL ELEVATION <br />Three piezometric maps were developed to show the water level <br />flow patterns for the QR, HI and Third White Sandstone aquifers at <br />Trapper Mine. Water levels from the Fall of 1987 were used in the <br />development of these maps. <br />Map No. 2-1 presents the water-level elevations for the QR <br />aquifer. The GP wells that are shown on this map are the new wells <br />installed for the east area and baseline data for these wells are <br />presently being collected. The water-level elevation is shown by the <br />QR wells, GA 1, GD2, GE1, GF6, GP5 and GP6. The ground-water flow in <br />• the QR aquifer is mainly to the north. Mining has affected the QR <br />aquifer only close to the D and E pits by causing drawdowns very near <br />the pit edges. Drawdowns in the QR aquifer in the far western portion <br />of Trapper permit near well GE1 are much more extensive than adjacent <br />to the remainder of Trapper Mine. These larger drawdowns are not <br />thought to be caused by Trapper dewatering. Some rise of the contour <br />elevations north of these pits could have occurred by the movement of <br />additional water into the QR aquifer in these areas. Gradients and <br />flow directions in the QR aquifer for 1987 are similar to those <br />observed in 1986. <br />Map No. 2-2 presents the water-level elevation contours for the <br />HI aquifer for the Fall of 1987. Wells GB5, GC 1, GE2, and GF4, which <br />• are completed in the HI aquifer, and backfill wells GFS and GF7, were <br />2-10 <br />