US lawMontanaRegulationsTitle 17 — ENVIRONMENTAL QUALITYChapter 17.56 — UNDERGROUND STORAGE TANKS PETROLEUM AND CHEMICAL SUBSTANCESSubchapter 17.56.12 — Underground Storage Tank Installer Licensing Installation, Modification, Repair, and Closure Permits Inspections and Inspector Licensing17.56.1221ARM 17.56.1221ARM 17.56.1221. PROHIBITION OF UNPROFESSIONAL INSTALLER CONDUCTTransferredLength: 6 wordsOfficial source Cite as Mont. Admin. R. 17.56.122117.56.1221 PROHIBITION OF UNPROFESSIONAL INSTALLER CONDUCTPreviousARM 17.56.1218NextARM 17.56.1222