Preparation and submission to the Congress of the proposal required in this section shall not require the preparation of an environmental impact statement under section 102(2)(C) of the National Environmental Policy Act of 1969 (
42 U.S.C. 4332(2)(C)). The Secretary shall prepare, in accordance with regulations issued by the Secretary implementing such Act [
42 U.S.C. 4321 et seq.], an environmental assessment with respect to such proposal. Such environmental assessment shall be based upon available information regarding alternative technologies for the storage of spent nuclear fuel and high-level radioactive waste. The Secretary shall submit such environmental assessment to the Congress at the time such proposal is submitted.