40 CFR § 52.2227
Prevention of air pollution emergency episodes
June 9, 2020
(a) The requirements of §51.152(a) of this chapter are not met since the plan does not provide for the enforcement of emission control actions for mobile sources during air pollution emergency episodes.
[37 FR 10895, May 31, 1972, as amended at 51 FR 40677, Nov. 7, 1986]