40 CFR 52.472: Approval status.

(a) With the exceptions set forth in this subpart, the Administrator approves the District of Columbia's plan for the attainment and maintenance of the national standards.

(b) [Reserved]

(c) With the exceptions set forth in this subpart, the Administrator approves the District of Columbia's plan for the attainment and maintenance of the national standards under section 110 of the Clean Air Act. Furthermore, the Administrator finds that the plan satisfies all requirements of Part D, Title 1, of the Clean Air Act as amended in 1977.

(d) Section 710 of title 20 of the District of Columbia Regulations is approved with the following condition: Any alternative controls or exemptions under section 710.8 approved or granted by the District of Columbia are subject to a public notice and public hearing requirements and must be submitted to EPA as SIP revisions. Such alternatives or exemptions are not effective until approved as SIP revisions by EPA.

(e)-(f) [Reserved]