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Regulations last checked for updates: Jan 18, 2025
Title 40 - Protection of Environment last revised: Dec 30, 2025
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Title 40
Chapter I
Part 1054
Subpart F - Subpart F—Test Procedures
§ 1054.501 - How do I run a valid emission test?
§ 1054.505 - How do I test engines?
§ 1054.520 - What testing must I perform to establish deterioration factors?
authority:
42 U.S.C. 7401-7671q.
source:
73 FR 59259, Oct. 8, 2008, unless otherwise noted.
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