; and (ii) the Uniform Standards of Professional Appraisal Practice. (B) Timing (i) Land subject to selections cancelled Not later than 18 months after the date of enactment of this Act, the appraisal under subparagraph (A) of the land subject to selections cancelled under subsection (a) shall be completed. (ii) New selections The appraisals under subparagraph (A) of the land selected under subsection (b)(1) shall be completed as the Navajo Nation finalizes those land selections. (d) Boundary For purposes of this section and the Act referred to in subsection (a), the present boundary of the Navajo Reservation is depicted on the map entitled Navajo Nation Boundary and dated November 16, 2015. 4. Designation of Ah-shi-sle-pah Wilderness (a) In general In accordance with the Wilderness Act ( 16 U.S.C. 1131 et seq.), the approximately 7,242 acres of land as generally depicted on the map entitled San Juan County Wilderness Designations and dated April 2, 2015, is designated as wilderness and as a component of the National Wilderness Preservation System, which shall be known as the Ah-shi-sle-pah Wilderness (referred to in this section as the Wilderness ). (b) Management (1) In general Subject to valid existing rights, the Wilderness shall be administered by the Director of the Bureau of Land Management in accordance with this section and the Wilderness Act ( 16 U.S.C. 1131 et seq.), except that any reference in that Act to the effective date of that Act shall be considered to be a reference to the date of enactment of this Act. (2) Adjacent management (A) In general Congress does not intend for the designation of the Wilderness to create a protective perimeter or buffer zone around the Wilderness. (B) Nonwilderness activities The fact that nonwilderness activities or uses can be seen or heard from areas within the Wilderness shall not preclude the conduct of the activities or uses outside the boundary of the Wilderness. (3) Incorporation of acquired land and interests in land Any land or interest in land that is