U.S. Code of Federal Regulations
Regulations most recently checked for updates: Aug 27, 2025
Permits to construct are required for new major stationary sources and major modifications to existing major stationary sources pursuant to 40 CFR 52.21.
Regulations most recently checked for updates: Aug 27, 2025
Permits to construct are required for new major stationary sources and major modifications to existing major stationary sources pursuant to 40 CFR 52.21.