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Regulations last checked for updates: May 14, 2025
Title 40 - Protection of Environment last revised: Apr 14, 2028
All Titles
Title 40
Chapter I
Part 63
Subpart C - Subpart C—List of Hazardous Air Pollutants, Petitions Process, Lesser Quantity Designations, Source Category List
§ 63.60 - Deletion of caprolactam from the list of hazardous air pollutants.
§ 63.61 - Deletion of methyl ethyl ketone from the list of hazardous air pollutants.
§ 63.62 - Redefinition of glycol ethers listed as hazardous air pollutants.
§ 63.63 - Deletion of ethylene glycol monobutyl ether from the list of hazardous air pollutants.
§ 63.64 - Additions of substances to the list of hazardous air pollutants.
§§ 63.65-63.69 - §[Reserved]
authority:
42 U.S.C. 7401
source:
57 FR 61992, Dec. 29, 1992, unless otherwise noted.
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