After notice and opportunity for public hearing in each affected State, and meaningful engagement for any significant revision, the Administrator may revise any provision of an applicable Federal plan if:
(a) The provision was promulgated by the Administrator; and
(b) The plan, as revised, will be consistent with the Act and with the requirements of this subpart.
[84 FR 32575, July 8, 2019, as amended at 88 FR 80545, Nov. 17, 2023]