36.21.647 TOP TERMINAL HEIGHT
(1) The casing head or pitless unit of any water
well shall extend not less than 18 inches above the finished ground surface or
pump house floor, and not less than 18 inches above the local surface runoff
level. No casing shall be cut off below land surface except
during permanent abandonment of a well. The ground surface immediately surrounding the
top of the well casing or pitless unit shall be graded so as to drain surface
water away from the well. The casing of any water well shall extend not less
than 18 inches above the established 100 year floodplain elevation or be capped
with a watertight seal and vented above flood level.
History: 37-43-202(3), MCA; IMP, 37-43-202(3), MCA; NEW, 1986 MAR p. 1699, Eff. 10/17/86; AMD, 1997 MAR p. 65, Eff. 1/17/97.