16 U.S.C. § 110c — Boundary adjustments

(a) Park boundary adjustments. Mount Rainier National Park's boundary, first set by the Act of March 2, 1899, and later amended (found at 16 U.S.C. 91–110b), is redrawn. About 240 acres are added to the park, and about 31.5 acres are removed from it. The exact lines are shown on a specific map — "Mount Rainier National Park Proposed 1987 Boundary Adjustments," numbered 105–80,010B and dated January 1987 — which the public can view at the National Park Service's Washington office and at the park itself. (b) Forest boundary adjustment. The boundaries of the Snoqualmie National Forest and the Gifford Pinchot National Forest are also redrawn, using that same 1987 map. About 31.5 acres are added to the Snoqualmie National Forest, about 30 acres are removed from the Snoqualmie National Forest, and about 210 acres are removed from the Gifford Pinchot National Forest. This map can be viewed at the Forest Service's Washington, D.C. office and at the two forests. (c) Administration of park land. Land that used to belong to the two national forests, but is now inside the park's new boundary, is transferred to the Secretary of the Interior to manage as part of the park, and must follow the park's laws and rules — though any valid existing rights in that land stay valid. The Secretary of the Interior may accept either shared ("concurrent") or full ("exclusive") legal authority over land and water added to the park, and must tell Washington's Governor in writing when the state hands over that authority; until the Secretary and Governor agree on shared-authority terms, the federal government's existing full authority continues. The Secretary is also authorized to buy, or otherwise acquire from willing sellers — by donation, purchase, exchange, or bequest — any non-federal land, water, or land interests that fall inside the park's new boundary. (d) Administration of forest land. Land that used to belong to Mount Rainier National Park, but is now removed from the park and placed inside the Snoqualmie National Forest, is transferred to the Secretary of Agriculture to manage as part of the forest, and must follow the National Forest System's laws and rules, again subject to any valid existing rights. For two other laws — sections 100506(c) and 200306 of title 54 — the newly redrawn forest boundaries are treated as if they had been the forest boundaries back on January 1, 1965. Finally, once Washington State agrees to accept it, the federal government gives back ("retrocedes") to the state any legal authority it had gained over the land removed from the park's boundary.