36.21.661 TEMPORARY CAPPING
(1) At all times during the progress of the work, the contractor shall protect the
well in such a manner as to effectively prevent either tampering with the well
or the entrance of foreign matter into it. Upon its completion, he shall
provide and set a substantial screwed, flanged or welded cap.
(2) Any well to be temporarily removed from service, temporarily abandoned due to a recess in construction, or any
well to be temporarily abandoned before commencing service, shall be capped
with a watertight seal, watertight welded steel cap, or threaded cap. In all
cases, caps shall be of steel or cast iron of at least 3/16 of an inch in
(3) Temporarily abandoned wells shall be grouted and sealed to comply with ARM 36.21.654 before the drill rig
is removed from the site.
(4) Temporarily abandoned
wells shall have an access port as per ARM 36.21.665.
History: 37-43-202(3), MCA; IMP, 37-43-202(3), MCA; NEW, 1986 MAR p. 1699, Eff. 10/17/86; AMD, 1991 MAR p. 913, Eff. 6/14/91; AMD, 1997 MAR p. 65, Eff. 1/17/97.