40 CFR § 60.718
Delegation of authority
June 9, 2020
(a) In delegating implementation and enforcement authority to a State under section 111(c) of the Act, the authorities contained in paragraph (b) of this section shall be retained by the Administrator and not transferred to a State.
(b) Authorities which will not be delegated to States:
[53 FR 38914, Oct. 3, 1988; 53 FR 47955, Nov. 29, 1988]