US lawMontanaRegulationsTitle 36 — NATURAL RESOURCES AND CONSERVATIONChapter 36.21 — BOARD OF WATER WELL CONTRACTORSSubchapter 36.21.6 — Construction Standards36.21.643ARM 36.21.643ARM 36.21.643. TEMPORARY CASINGLast amended: 1986Length: 20 wordsOfficial source Cite as Mont. Admin. R. 36.21.643(1) Temporary outer surface casing used in the construction of a well shall be withdrawn as sealing material is placed.PreviousARM 36.21.642NextARM 36.21.644