US lawMinnesotaRegulationsDEPARTMENT OF HEALTHChapter 4620 — CHAPTER 4620, CLEAN INDOOR AIR4620.1440Minn. R. 4620.1440COMPLIANCELast amended: 2008Year: 2026Length: 10 wordsOfficial source The proprietor must comply with parts 4620.0050 to 4620.1450 .PreviousMinn. R. 4620.0100NextMinn. R. 4620.1450