CFR›Title 25›Chapter III›Part 573 ContainsSections 573.1–573.5CorpusDaily eCFRDisplayed edition2026-04-15Last updated2026-04-15 PART 573—COMPLIANCE AND ENFORCEMENT Sections 573.1 § 573.1 What is the purpose of this part? 573.2 § 573.2 When may a letter of concern be issued? 573.3 § 573.3 Notice of violation. 573.4 § 573.4 When may the Chair issue an order of temporary closure? 573.5 § 573.5 When does an enforcement action become final agency action? Authority25 U.S.C. 2706(b)(10); 25 U.S.C. 2713; E.O. 13175, 65 FR 67249, 3 CFR, 2000 Comp.,p.304.Source58 FR 5844, Jan. 22, 1993, unless otherwise noted. Previous 571 Part 571—Monitoring and Investigations Next 575 Part 575—Civil Fines