; (ii) Doyon, Limited, shall notify the Secretary (acting through the Alaska State Office of the Bureau of Land Management) of the preference of Doyon, Limited, not later than 90 days after the date of enactment of this Act; and (iii) the Secretary shall convey to Doyon, Limited, the subsurface estate selected under clause (i). 9. Nagamut Section 12 of the Alaska Native Claims Settlement Act ( 43 U.S.C. 1611 ) is amended by adding at the end the following new subsection: (g) Nagamut (1) Definitions For the purposes of this subsection: (A) Calista The term Calista means Calista Corporation, an Alaska Native Regional Corporation in accordance with section 7, which is entitled to the subsurface estate to the Nagamut selection pursuant to section 14(f). (B) Nagamut The term Nagamut means Nagamut Limited, a Native group recognized as eligible to receive the conveyance of 6,080 acres under section 13(h)(2) and organized under the laws of the State of Alaska. (C) Nagamut selection The term Nagamut selection means the unconveyed surface estate to 6,080 acres of land Nagamut selected on September 18, 1975 under Bureau of Land Management serial number AA–9902. (2) In general As determined under paragraph (3), in lieu of the conveyance of the Nagamut selection to Nagamut and the subsurface estate of the Nagamut selection to Calista, the Secretary shall— (A) pay compensation to Nagamut in an amount equal to the fair market value of the Nagamut selection; and (B) pay compensation to Calista in an amount equal to the fair market value of any subsurface estate beneath the Nagamut selection to which Calista is entitled. (3) Appraisals (A) In general Within 18 months of the date of enactment of the Alaska Native Claims Settlement Improvement Act of 2017 , the fair market value of the surface and subsurface estates of the Nagamut selection shall be determined by appraisals conducted— (i) in accordance with the Uniform Appraisal Standards for Federal Land Acquisitions and the Uniform Standards of Professional Appraisal Practice