40 CFR § 88.201-94
Scope
June 9, 2020
Applicability. The requirements of this subpart shall apply to the following:
(a) State Implementation Plan revisions for the State of California and other states pursuant to compliance with section 249 of the Clean Air Act, as amended in 1990.
(b) Vehicle manufacturers with sales in the State of California.
[57 FR 60046, Dec. 17, 1992, as amended at 59 FR 50077, Sept. 30, 1994]