CFR›Title 40›Chapter I›Part 122›Subpart A ContainsSections 122.1–122.7CorpusDaily eCFRDisplayed edition2026-04-15Last updated2026-04-15 Subpart A—Definitions and General Program Requirements Sections 122.1 § 122.1 Purpose and scope. 122.2 § 122.2 Definitions. 122.3 § 122.3 Exclusions. 122.4 § 122.4 Prohibitions (applicable to State NPDES programs, see § 123.25). 122.5 § 122.5 Effect of a permit. 122.6 § 122.6 Continuation of expiring permits. 122.7 § 122.7 Confidentiality of information. Next Appendix A to Part 122 Appendix A to Part 122—NPDES Primary Industry Categories