CFR›Title 40›Chapter I›Part 266›Subpart N›Subject Group Storage Unit Closure ContainsSection 266.260CorpusDaily eCFRDisplayed edition2026-04-15Last updated2026-04-15 Sections 266.260 § 266.260 Do closure requirements apply to units that stored LLMW prior to the effective date of Subpart N? Previous Storage and Treatment Conditional Exemption and Eligibility Storage and Treatment Conditional Exemption and Eligibility Next Terms Terms