CFR›Title 40›Chapter I›Part 63›Subpart LLLLLL›Subject Group Standards and Compliance Requirements ContainsSections 63.11395–63.11396CorpusDaily eCFRDisplayed edition2026-04-15Last updated2026-04-15 Sections 63.11395 § 63.11395 What are the standards and compliance requirements for existing sources? 63.11396 § 63.11396 What are the standards and compliance requirements for new sources? Previous Other Requirements and Information Other Requirements and Information