40 CFR § 52.2380
Significant deterioration of air quality
June 9, 2020
The program to review the construction and operation of new and modified major stationary sources in attainment areas is approved as meeting the requirements of Part C, except regulation 5-501(3) entitled “Default permits”, and a portion of the SIP revision narrative from the first full paragraph on pages 9-11 through the first four lines of pages 9-12 inclusive, both of which were submitted on March 21, 1979 and which are disapproved.
[45 FR 6784, Jan. 30, 1980]