CFR›Title 40›Chapter I›Part 63›Subpart PPPP›Subject Group What This Subpart Covers ContainsSections 63.4480–63.4483CorpusDaily eCFRDisplayed edition2026-11-06Last updated2026-11-06 Sections 63.4480 § 63.4480 What is the purpose of this subpart? 63.4481 § 63.4481 Am I subject to this subpart? 63.4482 § 63.4482 What parts of my plant does this subpart cover? 63.4483 § 63.4483 When do I have to comply with this subpart? Previous Other Requirements and Information Other Requirements and Information