; and (2) to take all steps necessary to implement and carry out the intent of the Treaty and this Act. (b) Approval of amendments The Secretary is delegated the authority, without further Act of Congress, to approve and execute amendments to the Treaty agreed to by the Navajo Nation and the San Juan Southern Paiute Tribe. 6. Lands proclaimed a reservation for the San Juan Southern Paiute Tribe (a) In general All right, title and interest, including water rights, to the approximately 5,400 acres of land within the Navajo Indian Reservation that are described in the Treaty as the San Juan Paiute Northern Area and the San Juan Paiute Southern Area, are hereby proclaimed as the San Juan Southern Paiute Reservation and such lands shall be held by the United States in trust as a reservation for the exclusive benefit of the San Juan Southern Paiute Tribe, subject to the rights of access under section 7 of this Act. (b) No major Federal action; undertaking No action taken pursuant to this section shall be considered— (1) a major Federal action under the National Environmental Policy Act ( 42 U.S.C. 4321 et seq. ); or (2) an undertaking under the National Historic Preservation Act ( 54 U.S.C. 300101 et seq. ). (c) No appraisal or valuation Notwithstanding any other law, no appraisal or other valuation shall be required to carry out the provisions of this section. 7. Rights of access and easements The Navajo Indian Reservation and the San Juan Southern Paiute Reservation shall be subject to the rights of access and easements as identified in the Treaty. 8. Surveying and fencing of land (a) Requirement The Secretary is directed to— (1) complete a survey and legal description of the boundary lines to establish the boundaries of the San Juan Southern Paiute Reservation, not later than 18 months after the date of the enactment of this Act; (2) officially file the survey plat in the appropriate office of the Department of the Interior; (3) mark and fence the lands as described in article V of the Treaty, where feasible