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~-"'~7 (} :J ,: j ') Impacts from Visual Resource ManagemenL Managing l,5T! acres in the segment in the proposed American Basin ACEC under VRM Class I objectives would result in surface disturbing activities being required to be naturally appearing upon the completion of the activity. Impacts from Wilderness Study Area ManagemenL Impacts in this alternative are analyzed assuming that WSA status would not be in effect, in the event that Congress acts on, and decides not to designate any part of any WSA as wilderness. If any part of Segment A is designated as wilderness, those lands would be managed as wilderness. Refer to Impacts ftoom WSA Management in the discussion of impacts of Alternative A (Continuation of Current Management) for impacts applicable to all alternatives, as long as WSA status applies. Impacts from Rights-of-Way ManagemenL Managing 1,577 acres in Unit D-S (American Basin ACEC as a rights-of-way exclusion area, and 2,408 acres in Units 0-17 and 0-20 as rights-of-way avoidance areas would result in few, if any future surface disturbing activities fro~ this land use. Rights-of-way are prohibited in the existing 'Loop Road withdrawal C-0125423 (330 acres). Impacts from Withdrawals and Classllications. Continuing the BLM protective withdrawal C-0125423, and effecting the withdrawal in the proposed American Basin ACEC would close these lands to mineral entry and location, and would protect scenic values by precluding most surface disturbing activities within Segment A on 1,907 of the 4,315 acres of public land. If the President recommends the segment to Congress for designation, a temporary three-year withdrawal would take effect that would segregate (1), the federal mineral estate from entry and location under the general mining laws, and (2), the federal surface estate from future appropriation under the general land laws, thereby protecting the values in the segment from surface disturbance during this period. CUMULATIVE IMPACTS ON VALUES IN SEGMENT A Increased recreation use, primarily off-highway vehicle use, could result in some increase of impacts to scenic ALTERNATIVE D IMPACTS values. Impacts from other activities would be offset by required compliance with patrols, BLM's surface management regulations, required plans of operation in the proposed ACEC, special ACEC management attention, rights-of-way exclusion and avoidance areas, VRM Class I objectives in the ACEC, and management actions in the plan for the Alpine Triangle SRMA. If designation occurs, more attention and recognition would bring in more visitors, potentially resulting in more impacts to scenic values. IMPACTS ON VISUAL RESOURCES IMPACTS FROM PROPOSED MANAGEMENT ACTIONS Impacts from Visual Resource Management. Managing the Redcloud Peak RNNACEC (D-2, 5,950 acres), American Basin ACEC (D-S, 1,577 acres), and the Dillon Pinnacles ACEC (0-10, 190 acres) under VRM Class I objectives would improve or maintain scenic quality on these lands as a result of more restrictive visual resource objectives. Managing nearly the remainder of the entire planning area under VRM class U objectives, which generally require more mitigation of impacts to scenic quality then current VRM ratings, would enhance the visual quality of the area or result in a greater degree of mitigation of visual impacts. IMPACTS ON ARCHAEOLOGICAL AND HISTORICAL RESOURCES IMPACTS FROM PROPOSED MANAGEMENT ACTIONS Impacts from Archaeological and Historical Resource ManagemenL The gathering of archaeological or historical information required by law in response to project development or proposed disturbance would contribute to our current knowledge and data base. However, any physical disturbance and extraction of information from sites, other than that for documentation, would remove that data from context, and destroy the integrity of sites. 4-53