Except for the provision of Federal financial assistance for the purpose of assisting the construction of publicly owned treatment works as authorized by
section 1281 of this title, and the issuance of a permit under
section 1342 of this title for the discharge of any pollutant by a new source as defined in
section 1316 of this title, no action of the Administrator taken pursuant to this chapter shall be deemed a major Federal action significantly affecting the quality of the human environment within the meaning of the National Environmental Policy Act of 1969 (
[83 Stat. 852]) [
42 U.S.C. 4321 et seq.]; and