1. (1) Mixing zones for ground water are to be limited and comply with the following water quality standards:

   1. (a) Human health based ground water standards must not be exceeded beyond the boundaries of the mixing zone.
2. (2) No mixing zone for ground water will be allowed if the zone of influence of an existing or proposed drinking water supply well will intercept the mixing zone.

Authorizing statute(s): 75-5-301, MCA

Implementing statute(s): 75-5-301, MCA

History: NEW, 1994 MAR p. 2136, Eff. 8/12/94; TRANS, from DHES, 1996 MAR p. 1499; AMD, 2024 MAR p. 1581, Eff. 7/6/24.