CFR›Title 40›Chapter I›Part 270›Subpart E ContainsSections 270.50–270.51CorpusDaily eCFRDisplayed edition2026-05-07Last updated2026-05-07 Subpart E—Expiration and Continuation of Permits Sections 270.50 § 270.50 Duration of permits. 270.51 § 270.51 Continuation of expiring permits. Previous D Subpart D—Changes to Permit Next F Subpart F—Special Forms of Permits