((1)) The Secretary may not proceed with the preparation of an environmental impact statement relating to the construction or operation of a defense facility of the Department of Energy if the estimated cost of preparing such statement exceeds $250,000 unless—

((A)) the Secretary has notified the Committees on Armed Services of the Senate and the House of Representatives of his intent to prepare such statement and a period of thirty days has expired after the date on which such notice was received by such committees; or

((B)) the Secretary has received from each such committee, before the expiration of such thirty-day period, a written notice that the committee agrees with the decision of the Secretary regarding the preparation of such statement.

((2)) The provisions of paragraph (1) shall not apply in the case of any environmental impact statement on which the Secretary began preparation before .