40 CFR §63.11193
Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗
You are subject to this subpart if you own or operate an industrial, commercial, or institutional boiler as defined in § 63.11237 that is located at, or is part of, an area source of hazardous air pollutants (HAP), as defined in § 63.2, except as specified in § 63.11195.