US lawMontanaRegulationsTitle 17 — ENVIRONMENTAL QUALITYChapter 17.30 — WATER QUALITYSubchapter 17.30.6 — Surface Water Quality Standards and Procedures17.30.658ARM 17.30.658ARM 17.30.658. G-1 CLASSIFICATION STANDARDSRepealedLast amended: 2012Length: 1 wordsOfficial source Cite as Mont. Admin. R. 17.30.658(REPEALED)PreviousARM 17.30.657NextARM 17.30.658