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III IIIIIIIIIIIII III 999 Mountain Coal Company West Elk Mine Post Once amc 591 Somerset, Cokredo 81434 Teleplcne 9709?95075 Fa 970 9?D5595 RF(;EIVED July 19, 1995 Ms. Christine ]:. Johnston DIVISION OI' MINERALS AND GEOLOGY Office of Mined Land Reclamation 1313 Sherman Street, Room 215 Denver, CO 80203 /\ JUL 21 1995 Division of mmerdis & Geology Re: West Elk Mine, Permit No. C-80-007, Update on Materials Storage Bench, MB-1 As- Built, and Borehole Completion & Location (MR 124) Projects Dear Christine Due to differing circumstances, the above-referenced projects have not yet been completed, but Mountain Coa] Company (MCC) has scheduled this work. As you know, the surface of the Materials Stor;tge Bench (MSB) has been saturated since thawing this Spring. MCC has been unsuccessful in drying the road base and surface gravel by windrowing the surface layers. MCC received proposals last week from several contractors to excavate the wet material, replace and compact dry material ,and surface the MSB by the end of September. Until this work is completed, fiord grading and shotcreting of drainage ditches in the approved configurations cannot be com~~leted. Positive drainage will be maintained in the preliminary ditches currently in place. MCC has contracted with Westaz Engineers, Inc. to complete the certified as-built drawing for MB-I by the rriddle of August. Utilizing that drawing, Greystone Development Consultants, Inc. will prepaze thr; as-built drainage designs for the pond by the end of August. Per MR 109, the dike was added to pond MB-1 to facilitate the lining of the pond. You may recall from that revision that there is more than enough capacity in each "cell" of the pond to contain and treat the required inflows. The revision to be submitted with the as-builts will make the dike a permanent structure and n;-verify the capacities of both of the pond cells. MCC appreciates the reminder of the borehole map and completion information required for MR 124. This information had been inadvertently misplaced. MCC is in the process of adding the locations of thc: boreholes that were completed as piezometers to Map 53. A summary of the completion infrrrmation will be provided for inclusion in Exhibit 12.