The Secretary of the Interior has been granted discretionary authority by section 315 of the Federal Land Policy and Management Act of 1976 (43 U.S.C. § 1745) to issue recordable disclaimers of interests in lands. In general, a disclaimer may be issued if the disclaimer will help remove a cloud on the title to lands and there is a determination that such lands are not lands of the United States or that the United States does not hold a valid interest in the lands. These regulations implement this statutory authority of the Secretary.