40 CFR 1039.635 - What are the hardship provisions for engine manufacturers?

Regulations last checked for updates: Feb 14, 2026

Title 40 - Protection of Environment last revised: Dec 22, 2026

View all text of Subpart G [§ 1039.601 - § 1039.699]

§ 1039.635 - What are the hardship provisions for engine manufacturers?

If you qualify for the hardship provisions specified in 40 CFR 1068.245, we may approve a period of delayed compliance for up to one model year total (or two model years total for small-volume manufacturers). If you qualify for the hardship provisions specified in 40 CFR 1068.250 for small-volume manufacturers, we may approve a period of delayed compliance for up to two model years total.

authority: 42 U.S.C. 7401-7671q.

source: 69 FR 39213, June 29, 2004, unless otherwise noted.

cite as: 40 CFR 1039.635