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West Elk Mine . Description of Possible Subsidence Consequences - 2.05.6(6)Ib)(II Pre- and Post-mining Land Uses -2.05.6 (6)(b)(i)(A) As indicated in the Mountain Coal Company Coal Methane Drainage Project EA (February 2002), North Fork Coal EIS (2000), and Environmental Analysis U-94-37 (November 1994), prepared by the U.S. Forest Service (USFS) and U.S. Bureau of Land Management (BLM), in cooperation with the U.S. Office of Surface Mining (OSM) and other jurisdictional agencies, the permit area lands support wildlife use, dispersed recreation, and livestock grazing. The Forest Service Amended Land Resource Management Plan prescribed land use designations of the Box Canyon lease tract, South of Divide permit revision area, and surrounding USFS lauds as "SA" and "tiB," which emphasize wildlife habitat and livestock grazing, respectively, and may provide recreational opportunities for semi-primitive non- motorized, semi-primitive motorized and roaded natural settings. The area is generally open to off-road motorized use, as identified on the "Gunnison Area Basin" National Forest map. It is anticipated that little or no impacts to wildlife and domestic livestock uses, and their respective habitat will occur as a consequence of mining-induced subsidence on the permit area. In the unlikely event that subsidence effects adversely impact wildlife or domestic livestock uses associated mitigation measures will focus on returned disturbed areas to a capability and land use(s) which existed prior to mining. These mitigation measures may include, but not be limited to, repairs of surface cracks that aze deemed dangerous to human, wildlife, or livestock. The repairs of the cracks may include backfilling with available native soils, gravels, concrete block, etc. Stream flows will be returned to their channels if, in the unlikely event, they aze diverted by surface subsidence cracking. These repairs can include the use of bentonite or native soils to seal the fractures. Temporary culverts in ditches and streams may also be used to bridge surface cracks while the best method to seal the fractures is determined. Livestock fences damaged b mining related activities will be repaired as soon as possible. Roads will be repaired through reding or filling if adversely affected by subsidence. Roads and approved trails will also be clear d if rocks or other debris fall across their path due to mine related subsidence. Effects of Mining on Surficial Geologic Features When evaluating the effects of mining in the permit revision area, the present land use, the post- mining land use and the effects of previous mining in the azea should be considered. Present land uses primarily include wildlife habitat, recreational hunting, and livestock grazing. Post- mining land uses will be essentially the same. Evaluation of the effects of past and current longwall mining on surface features indicates that surface cracks and visible surface effects are relatively rare and have been documented as follows: ~~ 2.05-97 Revised November 2004 PRIO