40 C.F.R. § 6.405
Under section 2-5 (b) and (c) of the Executive Order, Federal agencies may provide for modifications in the contents, timing and availability of documents or exemptions from certain requirements for the environmental review and assessment. The responsible official, in consultation with the Director, Office of Federal Activities (OFA), and the Assistant Administrator, Office of International Affairs (OIA), may approve modifications for situations described in section 2-5(b). The responsible official, in consultation with the Director, OFA and Assistant Administrator, OIA, shall obtain exemptions from the Administrator for situations described in section 2-5(c). The Department of State and the Council on Environmental Quality shall be consulted as soon as possible on the utilization of such exemptions.
40 C.F.R. § 6.405