To amend the Atomic Energy Act of 1954 to prohibit the disposal of non-byproduct material at certain mill tailings disposal sites and to amend the Federal Land Policy and Management Act of 1976 to restrict for purposes of environmental protection land conveyed under the authority of that Act, and for other purposes.

Amends the Atomic Energy Act of 1954 to require the agreement of the Governor or chief executive officer of a State before: (1) any material, other than byproduct material, which is generated at a site subject to regulation under specified provisions of the Uranium Mill Tailings Radiation Control Act of 1978, may be disposed of at that site in such State; or (2) any such byproduct material may be transported into such State for purposes of storage or disposal there.

Amends the Federal Land Policy and Management Act of 1976 to place the following environmental restriction on lands conveyed and leased and rights-of-way granted under the authority of such Act. Requires State approval, through enactment of a State law approving such specific use of such land, before any such land may be used to facilitate construction or development of any facility for management of radioactive or other waste generated outside of the State in which such lands are located. (Includes storage, treatment, incinceration, disposal, or any other form of management of such waste, under such restriction.)