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CHAPTER FOUR Impacts from Tmnsportation and Access. Acquiring access into U new acres would improve livestock grazing administration, but 11 of the U would be for public access, which would result in some degree of additional livestock harassment and vandalism to livestock facilities. Impacts from Disposal of Public Lands. Disposal of 3,049 acres of public land that are grazed by livestock would reduce livestock allocations by 203 AUMs. CUMULATIVE IMPACTS ON LIVESTOCK GRAZING MANAGEMENT E\iminating or not authorizing livestock grazing, implementing minimum stubble heights and seasonal grazing restrictions and disposal of public lands would result in a net decrease of 927 AUMs in the planning area, and a total grazing preference of 46,501 AUMs. Long-term livestock forage conditions, vigor, and livestock distribution would be improved as a result of vegetative treatments and improvements in forage quality and quantity. IMPACTS ON FOREST MANAGEMENT IMPACTS FROM PROPOSED MANAGEMENT ACTIONS Impacts from Forest Management. Intensive management of 41,347 acres of suitable commercial forest lands and 23,615 acres of suitable woodlands that would be available for harvest would result in potential annual harvests of 1,200 MBF of commercial timber, 490 cords of firewood, 400 wildings, and several hundred Christmas trees. About 10,000 acres would be inventoried for TPCC during the life of the plan. Impacts from Riparian Zone Management. Maintaining or improving riparian values or wildlife during timber harvesting could potentially preclude harvest on about 640 acres of suitable commercial forest lands, potentially resulting in about 20 MBF not being available for harvest annually. Impacts from Wildlife Habitat Management. Seasonal harvesting restrictions within elk calving areas would shorten an already abbreviated logging season. Designing sales to allow elk hiding cover along roads and clear cut edges could result in up to 500 acres or 15 MBF of suitable commercial timber not being available for harvest annually. Restricting barvesting in ponderosa pine stands, and any surrounding raptor nest sites could preclude harvest on about 2,260 acres of suitable commercial forest lands potentially resulting in up to 68 MBF not being available for harvest annually. Impacts from Livestock Grazing Management. Continued livestock grazing and trampling on about 400 acres of lands in need of reforestation, would result in these lands remaining classified as poorly stocked and regrowth being hampered. Impacts from Recreation Management. Restrictions on timber barvests to enhance recreation management and ROS settings in the Powderhom Primitive Area SRMA and the Slumgullion Earthflow National Natural Landmark ACEC would eliminate harvesting on 13,632 acres and 80 acres respectively. This would result in about 400 MBF not being available for harvest annually. Increasing recreational use on High Mesa would create a serious safety hazard along the switchbacks on the High Mesa Road between logging trucks and recreational vehicles. Impacts from Tmnsportatlon and Access. Acquiring access into four new areas for timber management would facilitate timber harvests on the affected public lands. Impacts from Disposal of Public Land. About 153 acres of suitable commercial forest lands would no longer be in public ownership, resulting in about 3MBF annually not being available for harvest. Impacts from Fire Management. About 500 acres of suitable commercial forest lands could be destroyed in conditional suppression areas, resulting in 15 MBF not being available for harvest annually. 4-68