Regulations last checked for updates: May 02, 2025

Title 40 - Protection of Environment last revised: Nov 02, 2025
All TitlesTitle 40Chapter IPart 63Subpart G - Subpart G—National Emission Standards for Hazardous Air Pollutants From the Synthetic Organic Chemical Manufacturing Industry for Process Vents, Storage Vessels, Transfer Operations, and Wastewater
View all text of Subpart G [§ 63.110 - § 63.153]
§ 63.111 - Definitions.

All terms used in this subpart shall have the meaning given them in the Act and in subpart F of this part.

[89 FR 43177, May 16, 2024]
authority: 42 U.S.C. 7401
source: 57 FR 61992, Dec. 29, 1992, unless otherwise noted.
cite as: 40 CFR 63.111
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