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.!"'1~'~(~'i" J j... ..." . J CUMULATIVE IMPACTS ON FOREST MANAGEMENT Restrictions on timber harvests would eliminate sustained yield harvest on 17,765 acres of suitable commercial forest lands resulting in a loss of 535 MBF annually. A total of 41,347 acres of suitable commercial forest lands would be managed for sustained yield production which would result in an annual barvest of 1,200 MBF of commercial saw timber. An additional 4,353 acres of suitable woodlands would be available for harvest annually (total of 23,615 acres) potentially increasing annual harvest by 90 cords, for a total of 490 cords annually. Other forest products would also be available for harvest (Christmas trees, wildings, etc.). IMPACTS ON RECREATION IMPACTS FROM PROPOSED MANAGEMENT ACTIONS Impacts from Recreation Management. Improved and additional campground and other recreation facilities, improved hiking trails, and increased interpretation and visitor contacts would enhance visitor use, and enjoyment and understanding of resources in the Planning Area. If a joint BLM/USFS visitor center is eventually constructed in Lake City, recreation management effectiveness and general public education and awareness of BLM management would be greatly improved in the Planning /\:rea, especially in tbe soutb and west portions. Designating and managing the Slumgullion Earthflow National Natural Landmark ACECwould result in special interpretive and other management attention being implemented in the unit which would help protect ACEC values. Closing 600 acres in the West Antelope Creek ACEC, and Powderhom Primitive Area SRMA to OHV use would help maintain ROS settings on 5,415 more acres. Limiting OHV traffic on 4,787 more acres, primarily south and west of Lake City to designated routes, would protect recreation and scenic values on these lands and would maintain PREFERRED ALTERNATlVE(E) IMPACTS ROS settings. Managing 363,993 acres as open to OHV use (9,923 fewer acres) would provide adequate quantities of land for OHV use. Impacts from Locatable Minerals Management. Withdrawing 54,077 acres of federal n:tineral estate from mineral entry and location would preclude any surface disturbance from possible mineral exploration or development and would protect the integrity of recreation settings and experiences on these lands. Managing about 105,368 acres of land with a high potential for the occurrence of locatable minerals as open to mineral entry and location could significantly alter recreation settings and experiences in the Alpine Triangle SRMA. Locatable mineral activity and related surface disturbance on the remaining BLM surface estate over federal mineral estate could also alter recreation settings and experiences. Designating 38,727 acres as ACECs (Redcloud Peak, West Antelope, and South Beaver Creek) would require plans of operation to be submitted for locatable mineral activity and would provide more control of surface disturbance and reclamation plans for recreation resources in these areas. Impacts from Saleable Minerals Management. Not authorizing mineral material disposal on about 57,497 acres of public land would protect ROS settings and experiences from mineral material related surface disturbance on these lands. The remaining 527,515 acres of public land could undergo some degree of change in ROS settings and experiences wherever mineral material related surface disturbance occurs, but mitigation for this discretionary action would help minimize impacts. Impacts from Riparian Zone Management. Improved condition of riparian zones through management from all disciplines would enhance the recreation setting and experience on these lands. Impacts from Special Status Plant and Animal Species and Habitat Management. Limiting OHV use to designated routes on 4,565 acres in the South Beaver Creek ACEC would restrict this use in an area previously open to OHV use. 4-69