CFR›Title 40›Chapter I›Part 501›Subpart A ContainsSections 501.1–501.3CorpusDaily eCFRDisplayed edition2026-04-15Last updated2026-04-15 Subpart A—Purpose, Scope and General Program Requirements Sections 501.1 § 501.1 Purpose and scope. 501.2 § 501.2 Definitions. 501.3 § 501.3 Coordination with other programs. Next B Subpart B—Development and Submission of State Programs