CFR›Title 40›Chapter I›Part 139›Subpart D ContainsSection 139.40CorpusDaily eCFRDisplayed edition2026-04-15Last updated2026-04-15 Subpart D—Special Area Requirements Sections 139.40 § 139.40 Federally-protected waters. Previous C Subpart C—Standards for Specific Discharges Incidental to the Normal Operation of a Vessel Next E Subpart E—Procedures for States to Request Changes to Standards, Regulations, or Policy Promulgated by the Administrator