CFR›Title 40›Chapter I›Part 97›Subpart J ContainsSection 97.90CorpusDaily eCFRDisplayed edition2026-04-15Last updated2026-04-15 Subpart J—Appeal Procedures Sections 97.90 § 97.90 Appeal procedures. Previous IIII Subpart IIII—CAIR NO<sub>X</sub> Ozone Season Opt-in Units