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iii iiiiiiiiiiiiiiii 999 8 August 1984 Ms Sandra Emrich Reclamation Specialist Mined Land Reclamation Division Colorado Department of Natural Resources Dear Sandra: Re: C-037-81 .RECEIVED AU G 1? 199 (.DINED LANG RECLAMATION OIVISIpM Cclo. DeoL al Natural Resources Herewith is Plan 3, a revision of and a suppliment to Plans 1 and 2 submitted by GEC Minerals on 18 July 1984. Included and attached to this Plan 3 is a profile of the East pit drainage channel, a revised Post Reclamation Topographic map, revised East pit yardage table, and a revised time table for all important reclamation end points. Following is an abstract of pertinent overviews of Plan 3, which will be more fully documented in the attachments. EAST PIT ---- As requested by the MLRD staff, Plan 2 has been modified for the East pit by dozing down the undisturbed pit wall in the Verdos Alluvium, placing this mat- erial on the emplaced overburden material of Plan 2. The southern end of the East pit has been filled to reduce the drainage profile to no more than 15%. This will measureably reduce erosion in the drainage chan- nel. This revision will entail an additional 192,700 yds3 of fill and 15,000 yds3 of cut to be moved over and above that proposed for Plan 2 of 7-18-84. Please note that the estimated time tc complete reclamation has been increased an additional thirteen months. ORPHAN AND NORTH ORPHAN PITS, P,EFUSE PIT, AND TIPPLE AREA--- It is proposed to modify the original approved plan of 1981 ,which envisioned placing four feet of material in the Orphan and Refuse pits and then covering with topsoil. It has been found that an excessive amount of overburden was used to fight the fire in an adjoining area, so that only enough remains to give app- roximately two feet of cover before topsoiling. Since all the overburden in this area is no~ic, it is felt this is sufficient. Topsoil stockpiled in the area