; commonly known as the Pacific Railway Act of 1862 ), under which railroad land grants along the Union Pacific Railroad right-of-way created a checkerboard land pattern of alternating public land and privately owned land, management of the land in the checkerboard area has been a constant source of frustration for the County government, private landholders in the County, and the Federal Government; (2) management of Federal land in the checkerboard area has been costly and difficult for the Federal land management agencies, creating a disincentive to manage the land effectively; (3) parcels of land within the checkerboard area in the County will not vary significantly in appraised value by acre due to the similarity of highest and best use in the County; and (4) consolidation of appropriate land within the checkerboard area through sales and exchanges for development and Federal management will— (A) help improve the tax base of the County; and (B) simplify management for the Federal Government. 612. Definitions In this title: (1) Eligible land The term eligible land means any land administered by the Director of the Bureau of Land Management— (A) that is within the area identified on the Map as Checkerboard Lands Resolution Area that is designated for disposal by the Secretary through— (i) the Winnemucca Consolidated Resource Management Plan; or (ii) any subsequent amendment or revision to the management plan that is undertaken with full public involvement