The boundaries of the Area, and the boundaries of the subareas included therein, shall be those shown on the map entitled “Proposed Cascade Head Scenic-Research Area”, dated June 1974, which is on file and available for public inspection in the office of the Chief, Forest Service, United States Department of Agriculture: Provided, That, from time to time, the Secretary may, after public hearing or other appropriate means for public participation, make adjustments in the boundaries of subareas to reflect changing natural conditions or to provide for more effective management of the Area and each of the subareas in accordance with the purposes and provisions of this subchapter.
As soon as practicable after December 22, 1974, the Secretary shall, with provisions for appropriate public participation in the planning process, develop a comprehensive management plan for the Area. Said plan shall prescribe specific management objectives and management controls necessary for the protection, management, and development of the Area and each of the subareas established pursuant to subsection (c) hereof.