Regulations last checked for updates: Feb 03, 2026

Title 40 - Protection of Environment last revised: Dec 31, 2026

INTRODUCTION
APPLICABILITY
EMISSION STANDARDS
GENERAL COMPLIANCE REQUIREMENTS
MONITORING
RECORDKEEPING AND REPORTING
PERFORMANCE TESTS
OTHER REQUIREMENTS AND INFORMATION
authority: 42 U.S.C. 7401
source: 36 FR 24877, Dec. 23, 1971, unless otherwise noted.