CFR›Title 40›Chapter I›Part 63›Subpart MMMM›Subject Group What This Subpart Covers ContainsSections 63.3880–63.3883CorpusDaily eCFRDisplayed edition2026-07-30Last updated2026-07-30 Sections 63.3880 § 63.3880 What is the purpose of this subpart? 63.3881 § 63.3881 Am I subject to this subpart? 63.3882 § 63.3882 What parts of my plant does this subpart cover? 63.3883 § 63.3883 When do I have to comply with this subpart? Previous Other Requirements and Information Other Requirements and Information