- (1) The standards in ARM 17.30.1006 establish the maximum allowable changes in ground water quality and are the basis for limiting discharges to ground water.
- (2) The ground water standards may be exceeded within a mixing zone established pursuant to applicable provisions in ARM Title 17, chapter 30, subchapter 5.
- (3) It is not necessary to treat discharges to a purer condition than the natural condition of the receiving water, within the meaning of 75-5-306, MCA.
- (4) The classifications of ground water are based on natural specific conductance as specified in ARM 17.30.1006.
Authorizing statute(s): 75-5-301, 80-15-105, 80-15-201, MCA
Implementing statute(s): 75-5-301, 80-15-201, MCA
History: NEW, 1999 MAR p. 94, Eff. 1/15/99; AMD, 2024 MAR p. 262, Eff. 2/10/24.