Yellowstone Mine [electronic Resource] : Mine Life Extension Amendment to Operating Permit 00005 Final Environmental Assessment 2006
Yellowstone Mine [electronic Resource] : Mine Life Extension Amendment to Operating Permit 00005 Final Environmental Assessment 2006
Montana.Dept. of Environmental Quality
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A buffer disturbance area would be established around the proposed East OB Pile to cover miscellaneous disturbances like soil salvage and storage areas, haul roads, equipment staging areas, sediment and erosion control systems, rock roll berms, miscellaneous access and service roads needed to maintain these systems and to control weeds, etc., over the 50-year mine life. The overburden disposal areas would be accessed by a main haul road from the pit, similar to the road that currently provides ...access to the existing part of each overburden disposal area. Short, temporary roads would be constructed from the main haul road to access the active part of each disposal area. These roads would be built within the footprint of the disposal areas. Overburden surfaces would be graded during construction to prevent ponding of rainfall, and final slope angles would be reduced from angle of repose to slopes of 2.5H:IV or less to facilitate reclamation and revegetation at closure. Overburden would be placed using haul trucks similar to those currently in use.
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