Regulations last checked for updates: Apr 03, 2025

Title 40 - Protection of Environment last revised: Nov 03, 2025

WHAT THIS SUBPART COVERS
EMISSION STANDARDS FOR MANUFACTURERS
EMISSION STANDARDS FOR OWNERS AND OPERATORS
FUEL REQUIREMENTS FOR OWNERS AND OPERATORS
OTHER REQUIREMENTS FOR OWNERS AND OPERATORS
COMPLIANCE REQUIREMENTS
TESTING REQUIREMENTS FOR OWNERS AND OPERATORS
NOTIFICATION, REPORTS, AND RECORDS FOR OWNERS AND OPERATORS
SPECIAL REQUIREMENTS
GENERAL PROVISIONS
DEFINITIONS
authority: 42 U.S.C. 7401
source: 36 FR 24877, Dec. 23, 1971, unless otherwise noted.