Wash. Rev. Code § 79.02.160
In case any person interested in any tract of land heretofore selected by the territory of Washington or any officer, board, or agent thereof or by the state of Washington or any officer, board, or agent thereof or which may be hereafter selected by the state of Washington or the department, in pursuance to any grant of lands made by the United States to the territory or state of Washington for any purpose or upon any trust whatever, the selection of which has failed or been rejected or shall fail or shall be rejected for any reason, shall request it, the department shall have the authority and power on behalf of the state to relinquish to the United States such tract of land.
RCW 79.02.160
Part headings not law-2004 c 199: See note following RCW 79.02.010.
Intent-2003 c 334: See note following RCW 79.02.010.