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The April 17, 1997 PHC submittal, on pages 4-237c and d, it is stated that only negative impacts <br />from surface water are expected at the GLUX-1 well, which monitors the First White Sandstone. <br />However, Figure A-7 of the 1996 Annual Report shows that the water level elevation in GLUX-1 <br />has dropped steadily since about 1989. Question number 22 follows. <br />22. Please comment on whether there has been an effect of mining on the ground water in the <br />First White Sandstone, as evidenced by the steady drop in the water level elevation in the <br />GLUX-1 well. <br />The only identified alluvial valley floor in the study area is in Flume Gulch. During this permit <br />term, no mining was close enough to have any impact to that hydrologic system. Mining in the <br />next permit teen will occur in Flume Gulch. Therefore, the PHC should be updated during the <br />renewal process to evaluate this new situation. <br />Because this hydrology adequacy review of the 1996 Annual Report is part of the OSM's Special <br />Focus Inspection of theTrapper Mine, the Division would appreciate a timely response. If you <br />have any questions, please call me. <br />Sincerely, <br />r~ ~ n <br />se J. D~Ydash ~4.0.{~( <br />P <br />Environmental Protection Specialist <br />C:\ W P6 { \trapper\tr76adeq <br />