CFR›Title 40›Chapter I›Part 280›Subpart G ContainsSections 280.70–280.74CorpusDaily eCFRDisplayed edition2026-04-27Last updated2026-04-27 Subpart G—Out-of-Service UST Systems and Closure Sections 280.70 § 280.70 Temporary closure. 280.71 § 280.71 Permanent closure and changes-in-service. 280.72 § 280.72 Assessing the site at closure or change-in-service. 280.73 § 280.73 Applicability to previously closed UST systems. 280.74 § 280.74 Closure records. Previous F Subpart F—Release Response and Corrective Action for UST Systems Containing Petroleum or Hazardous Substances Next H Subpart H—Financial Responsibility