Wash. Rev. Code § 79.02.120
For the purpose of obtaining from the United States indemnity or lieu lands for such lands granted to the state for common schools, educational, penal, reformatory, charitable, capitol building, or other purposes, as have been or may be lost to the state, or the title to or use or possession of which is claimed by the United States or by others claiming by, through or under the United States, by reason of any of the causes entitling the state to select other lands in lieu thereof, the inclusion of the same in any reservation by or under authority of the United States, or any other appropriation or disposition of the same by the United States, whether such lands are now surveyed or unsurveyed, the department, with the advice and approval of the attorney general, is authorized and empowered to enter into an agreement or agreements, on behalf of the state, with the proper officer or officers of the United States for the relinquishment of any such lands and the selection in lieu thereof, under the provisions of RCW 79.02.120 through 79.02.140, of lands of the United States of equal area and value.
RCW 79.02.120
Intent-2003 c 334: See note following RCW 79.02.010.