US lawFederal (United States)RegulationsTitle 40 CFR — Protection of EnvironmentChapter I — ENVIRONMENTAL PROTECTION AGENCYPart 122 — EPA ADMINISTERED PERMIT PROGRAMS: THE NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEMAppendix B to Part 12240 C.F.R. Appendix B to Part 122[Reserved]ReservedLast amended: 2016Year: 2026Length: 8 wordsOfficial source Cite as 40 C.F.R. Appendix B to Part 122 (2026)40 C.F.R. Appendix B to Part 122. [Reserved]Previous40 C.F.R. Appendix A to Part 122Next40 C.F.R. Appendix C to Part 122