CFR›Title 50›Chapter I›Part 13›50 CFR Part 13 Subpart A Citation50 CFR Part 13 Subpart AContainsSections 13.1–13.5CorpusDaily eCFRDisplayed edition2026-10-13Last updated2026-10-13 Subpart A—Introduction Sections 13.1 § 13.1 General. 13.2 § 13.2 Purpose of regulations. 13.3 § 13.3 Scope of regulations. 13.4 § 13.4 Emergency variation from requirements. 13.5 § 13.5 Information collection requirements. Authority16 U.S.C. 668a, 704, 712, 742j-l, 1374(g), 1382, 1538(d), 1539, 1540(f), 3374, 4901-4916; 18 U.S.C. 42; 19 U.S.C. 1202; 31 U.S.C. 9701.Source39 FR 1161, Jan. 4, 1974, unless otherwise noted. Next B Subpart B—Application for Permits