CFR›Title 40›Chapter I›Part 281›Subpart E ContainsSections 281.50–281.51CorpusDaily eCFRDisplayed edition2026-04-27Last updated2026-04-27 Subpart E—Approval Procedures Sections 281.50 § 281.50 Approval procedures for state programs. 281.51 § 281.51 Revision of approved state programs. Previous D Subpart D—Adequate Enforcement of Compliance Next F Subpart F—Withdrawal of Approval of State Programs