(a) With the exceptions set forth in this subpart, the Administrator approves North Carolina'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.

(b) New Source review permits issued pursuant to section 173 of the Clean Air Act will not be deemed valid by EPA unless the provisions of Section V of the Emission Offset (Interpretative Rule) published on January 16, 1979 (44 FR 3274) are met.