US lawMichiganRegulationsDepartment — Environment, Great Lakes and EnergyBureau — Air Quality DivisionR 336.1201 to 336.1299 — Part 2. Air Use Approval336.1221R 336.1221R 336.1221 Rescinded.RepealedLast amended: 1990Year: 2026Length: 1 wordsOfficial source Cite as Mich. Admin. Code R 336.1221Rescinded.PreviousR 336.1220NextR 336.1224