; and (B) the Uniform Standards of Professional Appraisal Practice. (2) Use of mass appraisals (A) The Secretary of the Interior may use a mass appraisal where the Secretary estimates that the land covered by the mass appraisal in Churchill County— (i) is of similar character and value; and (ii) has a likely value that does not exceed $250 per acre. (B) The Secretary shall exclude from a mass appraisal any land that has a likely value that exceeds $250 per acre. (C) The Secretary shall make the results of a mass appraisal conducted under subparagraph (A) available to the public. 603. Lands identified for disposal (a) Identification process (1) In general Subject to section 604, the Secretary shall identify public land managed by the Bureau of Reclamation and the Bureau of Land Management within Churchill County to offer for sale from among lands identified as potentially suitable for disposal in the applicable resource management plans. (2) Consultation and public comment Lands shall be identified under paragraph (1) in consultation with Churchill County, and after providing an opportunity for public comment. (3) Additional county role At the request of Churchill County, the Secretary of the Interior shall postpone or exclude all or a portion of land identified for sale under this section. Nothing in this section prohibits the Secretary from postponing or excluding all or a portion of land identified for sale under this section at the discretion of the Secretary. (4) Valid existing rights The sale of lands under this section is subject to valid existing rights. (b) Method of sale The sale of Federal land under subsection (a) shall be— (1) consistent with section 203 of the Federal Land Management Policy Act of 1976 ( 43 U.S.C. 1713 ); (2) unless otherwise determined by the Secretary, through a competitive bidding process