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<br />The water quality of the White River is considerably better than that in the alluvium indicating that <br />' penneabiliiy in the alluvium is restricted resulting in a relatively low degree of communication <br />between the river water and the water in the alluvium. The existence of Kenney Reservoir <br />' decreases the groundwater gradient which may inhibit any natural tendency for the alluvium to flush <br />itself of the higher dissolved solids content. The potential effects, therefore, were projected that the <br />dissolved solids of the White River alluvium in the vicinity of Scullion Gulch would continue to <br />' increase to a higher level and stabilize on an average basis. Apparently this more or less stable <br />level has been reached. <br />2.2.2.3 Bedrock Water Level Data Hydrographs for the 15 bedrock monitoring holes are contained <br />in Appendix D. Table 2-2 contains a statistical summary of the water level data from each of the <br />' 15 bedrock monitoring holes. The locations of the holes are shown on Plate 1 in the pocket of this <br />report. As noted in the original Deserado Mine permit application, the three zones being monitored <br />(upper sandstone facies, siltstone and coal facies, and the lower sandstone) identify three different <br />' stratigraphic zones which lack the characteristics of typical aquifers. The strata are tight as <br />demonstrated by pumping tests. <br />' The °upper sandstone facies' hydrographs, designated by the hole name ending in °U° are water <br />level depths in feet over time. Monitor hole 2-17U, located immediately over the East Mains, was <br />t mined under during November of 1985. The water level drop seen in this hole in the past two years <br />has stopped. The level has risen a foot from the lowest point. Longwall Panel 1 (LW-1) was mined <br />to within about 900 feet of this location in February 1988. <br />Monitor holes 2-7U and TW2-7U are located on the same location. Although the water levels in <br />the two holes have been comparable, fluctuations and Vends in each hole have in the past been <br />quite dissimilar. A longwall gateroad (4th East) was developed past this location in June 1988. No <br />holes were encountered, however, there was wet ground in the area after mining. The area has <br />since dried. Longwall panel 3 was mined past this location in April 1990. The next TW2-7U reading <br />after that (8/21/90) showed a water level drop of almost 80 feet. The water level in 2-7U eventually <br />showed a drop similar to, though of much smaller magnitude, that shown by TW2-7U. After the <br />drop, both holes exhibited a rising Vend. Longwall panel 4 was mined past the location in August <br />1991, with no apparent immediate response from either hole. However, during the last monitoring <br />' period both holes showed a drop in water level, again, with the drop in TW2-7U a much greater <br />magnitude than that in 2-7U. The water level in TW2-7U continues to be deeper than our <br />' monitoring capability (deeper than 300 feet). The level in 2-7U appears to have stabilized. The fact <br />that these two holes completed in the same zone within a short distance of each other respond so <br />differently further indicates the isolated nature of water bearing strata within the same zone. There <br />' are three other monitor holes at this same location, one in the middle zone and two in the lower. <br />' 8 <br /> <br />