Establishes an Office of Mountains, Deserts, and Plains within the Environmental Protection Agency to coordinate cleanup of abandoned hardrock and uranium mine sites.

• Creates the office inside the EPA division that runs solid waste programs, headed by a Director selected by the EPA Administrator
• Requires the EPA to identify priority abandoned mine sites each year and report the list and cleanup status to Congress
• Requires a 10-year interagency plan for cleaning up abandoned uranium mine sites on the Navajo Nation, with the first plan due by September 30, 2028
• States that the office does not give the EPA new regulatory authority or set a default cleanup standard

• Environment and Public Works Committee (Senate)

Environmental Protection