CFR›Title 40›Chapter I›Part 63›Subpart XX›Subject Group Background for Waste Requirements ContainsSections 63.1091–63.1092CorpusDaily eCFRDisplayed edition2026-04-27Last updated2026-04-27 Sections 63.1091 § 63.1091 What do the waste requirements do? 63.1092 § 63.1092 What are the major differences between the requirements of 40 CFR part 61, subpart FF, and the waste requirements for ethylene production sources? Previous Applicability for Waste Requirements Applicability for Waste Requirements Next Definitions Definitions