2017-03-27_REVISION - M1981185 (26)

Home Browse Search

Reclamation Plan-Amendment Exhibit E im Reclamation: Interim Reclamation Road banks and slopes Interim reclamation activities will include the installation and maintenance of BMPs as described in Ex- hibit U. The Operator will also continue to control noxious weeds. Earth works will involve road grad- ing,and the installation of drainage control using rock barriers,and check dams. Upon mine closure,the roadbed out slopes (less than 5%)will be regraded and revegetated. Operational Facility Areas Upon mine closure, surface structures subject to this plan(post 1950)will be salvaged,disposed of offsite or buried within the underground mine workings. Mine portals will be collapsed,back-filled, compacted, mulched and revegetated. Rock storage areas will be graded,mulched and revegetated. Closure and Final Reclamation Liquids and debris not authorized for underground disposal will be recycled or disposed offsite in accord- ance with applicable Federal, State and local waste management regulations. To the extent possible, buildings,steel sets,process equipment,generators,wire, etc. will be salvaged and sold. Remaining ma- terials not considered toxic or hazard producing will be dismantled,and cut to be disposed underground. Portals will be collapsed,backfilled,graded,mulched and revegetated.The mine portals will be buried under 3 feet or more of run of mine rock and graded with slopes equal to or less than the natural slopes (approximately 1(H)to 1.5(V). Post mine topographic configurations are illustrated on the following s: • Figure F-1: May Day No. 1; • Figure F-la-May Day No. 1 East • Figure F-2: May Day No. 2; • Figure F-3: Chief Manway and adjacent Little Deadwood Gulch Drainage;and • Figure F-4: Idaho mine affected area; • Figure F-5-May Day 3 affected area; In addition,the following final reclamation activities will include: • The base of operation(See Exhibit D) will be reclaimed to approximately pre-mine topography and revegetated; • The Idaho Pay Day historic mill building will be removed,salvaged,recycled or disposed in an approved landfill or in underground mine workings; • Roads and the La Plata Bridge will remain after mining. and • The affected areas will be covered with mulch and seeded. Pre-existing structures such as fences,historical buildings and roads, will not be reclaimed. During clo- sure, stormwater structures will be restored to approximate pre-mine design specifications. 112d Permit May Day Idaho Mine Complex Revised March 8,2017 Exhibit E—Rule 6.4.5 Page 2 of 7