Within ninety days from the date of his receipt of the report and recommendations submitted by the Commission under section
7941 of this title, notwithstanding the limitations contained in section
7911
(6)(A) and in section
7925
(a) of this title, if the Commission determines, based on such study, that such sites cannot be regulated and controlled by the State or the Commission in the manner described in section
7941 of this title, the Secretary may designate either or both of the sites referred to in section
7941 of this title as a processing site for purposes of subchapter I of this chapter. Following such designation, the Secretary may enter into cooperative agreements with New Mexico to perform remedial action pursuant to such subchapter I concerning only the residual radioactive materials at such site resulting from uranium produced for sale to a Federal agency prior to January 1, 1971, under contract with such agency. Any such designation shall be submitted by the Secretary, together with his estimate of the cost of carrying out such remedial action at the designated site, to the Committee on Interior and Insular Affairs and the Committee on Energy and Commerce of the House of Representatives and to the Committee on Energy and Natural Resources of the Senate.