StacksVerified U.S. regulatory reference

40 CFR §63.7680

Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗
This subpart establishes national emission standards for hazardous air pollutants (NESHAP) for iron and steel foundries. This subpart also establishes requirements to demonstrate initial and continuous compliance with the emissions limitations, work practice standards, and operation and maintenance requirements in this subpart.