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CHAPTER FOUR income sectors for tbeir socio-economic weD being and would receive a positive impact to income and employment from a 50% increase in recreation activity. CUMULATIVE IMPACTS ON ECONOMIC CONDITIONS The cumulative impact on the local economy is likely to be beneficial. The actual impact is localized but not presently quantified. IMPACTS ON LOCATABLE MINERALS IMPACTS FROM PROPOSED MANAGEMENT ACTIONS Impacts from Locatable Minerals Management. Identifying 670,198 acres of federal mineral estate, of wbicb about 99,600 acres bave a high likelihood for tbe occurrence of locatable minerals, as open to mineral entry and location would make these lands available for exploration and development under the general mining laws. Witbdrawing 58,369 acres of federal mineral estate from mineral entry and location would preclude any possible mineral exploration or development of tbese lands. Tbe lands whicb would be witbdrawn contain 5,400 acres witb a high likelihood for tbe occurrence of locatable minerals. Impacts from WUd and Scenic River Study Segment Recommendations. About 2,408 acres that would not be witbdrawn from mineral entry and location in tbis alternative in tbe 4,315 acre Segment A of the Lake Fork of tbe Gunnison River downstream from Sloan Lake would be witbdrawn for a three-year period, upon a recommendation to Congress for designation into tbe National Wild and Scenic Rivers System. As a result, tbe mineral resources within the segment would be unavailable for exploration and development for this period. IMPACTS ON OIL, GAS, AND GEO- THERMAL RESOURCES IMPACTS FROM PROPOSED MANAGEMENT ACTIONS Impacts from OU, Gas, and Geotbermal Management. Managing 679,381 acres of federal oil and gas estate as open to leasing of fluid minerals would make tbese resources available. About 47,537 acres not available would result in little impact to the oil and gas program because of little or no likelihood for tbe occurrence of tbese resources. IMPACTS ON SALEABLE MINERALS MANAGEMENT IMPACTS FROM PROPOSED MANAGEMENT ACTIONS Impacts from Saleable Minerals Management. Permitting tbe disposal of saleable mineral materials on 670,065 acres of federal mineral estate would more than satisfy tbe current demand of 12,500 cubic yards annually and meet tbe anticipated future demand. Not permitting the disposal of saleable mineral materials on 179,063 acres of federal mineral estate would not result in any significant impact due to the amount of materials tbat would be available. Seasonal restrictions on tbe disposal of mineral materials would not result in any significant impact. IMPACTS ON SOIL AND WATER RESOURCES IMPACTS FROM PROPOSED MANAGEMENT ACTIONS Impacts from SoU and Water Resources Management. The implementation of tbe "Long Gulcb Sediment Control and Riparian Habitat Improvement Project" would result in downstream sediment yields by up to 300 tons per year, increased vegetation production for watershed protection, improvement of hydrologic functions of riparian zone 4-14