; or (B) (i) the subsurface estate was conveyed to CAC; and (ii) the surface estate or a conservation easement in the surface estate was acquired by the State or by the United States as part of the Exxon Valdez Oil Spill Trustee Council Habitat Protection and Acquisition Program. (b) Study (1) In general Not later than 1 year after the date of enactment of this Act, the Secretary of Agriculture, in coordination with the Secretary and in consultation with CAC, shall conduct a study to identify the impacts on CAC land that resulted from changes in Federal law or Federal or State land acquisitions in the Chugach region after December 1, 1980. (2) Study requirements (A) In general The study described in paragraph (1) shall— (i) consider conflicts that have arisen between the management of Federal land in the Chugach region and CAC land; (ii) include recommendations for a land exchange, including land exchange options that could be offered to CAC as consideration for the conveyance of existing property rights of CAC in exchange for other Federal land or property available for exchange