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-41- <br />the site specific monitoring data concerning subsidence and its <br />hydrologic effects be taken into account in the design of any <br />protection plan. <br />Stipulation No. 8 <br />WHEN THE APPLICANT SUBMITS A PERMIT APPLICATION TO UNDERMINE THE DRY <br />FORK OF MINNES9TA CREEK, THE SUBSIDENCE PROTECTION PLAN SHOULD BE BASED. <br />UPON MONITORING INFORMATION COLLECTED DURING THE EARLIER PHASES OF <br />MINING. <br />Three perennial streams cross the southern portion of the life-of-mine <br />area, Lick creek, South Prong, and Horse Creek. Subsidence effects <br />could be significant along these stream courses as well, unless the <br />applicant undertakes to design subsidence protection plans for these <br />drainages as well as Dry Fork. <br />If adequate subsidence protection plans can be designed, then loss of <br />surface water would result only from the first two sources, increased <br />infiltration and loss of springs. This runoff is not entirely lost to <br />the hydrologic system. It would temporarily become apart of the <br />ground water system and would eventually reemerge to the surface. It <br />is difficult to predict where this water would reemerge. It could <br />re-emerge downstream in the same drainage (the Minnesota Creek system) <br />or it could reemerge along the North Fork of the Gunnison. In the <br />latter case, the impact upon water users located along Minnesota Creek <br />is potentially the greatest. In either case, water users located below <br />the confluence of Minnesota Creek and the North Fork of the Gunnison <br />should not be affected. The following stipulation is required by the <br />Division to insure-that the applicant analyzes and uses the data <br />gathered under requirements put forth in previous stipulations. <br />Stipulation No. 9 <br />WEST ELK COAL COMPANY OR ANY SUCCEEDING OPERATOR OF THE MT. GUNNISON <br />NUMBER 1 MINE, MUST CONTINUE TO SUBMIT TO THE DIVISION, AN ANNUAL <br />HYDROLOGIC REPORT. THIS REPORT SHALL INCLUDE AN ANALYSIS OF ALL <br />HYDROLOGIC DATA GATHERED DURING THE YEAR, AN ASSESSMENT OF THE IMPACTS <br />OF MINING DURING THE YEAR, AND AN ESTIMATE OF THE PROJECT IMPACTS OF <br />MINING IN THE FOLLOWING YEARS. THIS REPORT SHALL ASSESS THE IMPACTS OF <br />MINING ON THE QUALITY AND QUANTITY OF WATER IN SURFACE STREAMS, <br />SPRINGS, GROUND WATER AQUIFERS, MINE INFLOW AND MINE DISCHARGES: <br />is on Surface Waters <br />The Division, based on review of the permit applications for the mining <br />operations considered in this assessment, has identified several <br />possible affects of mining on surface water quality and quantity . <br />Surface water quality might be affected by the discharge of mine water <br />from underground workings or by seepage from waste rock or coal refuse <br />piles to the stream - alluvial aquifer system. The underground mining <br />operations, by altering ground water flow, reversing hydraulic <br />~. ~.~ <br />