75-5-306. Purer than natural unnecessary -- dams -- definition. (1) It is not necessary that wastes be treated to a purer condition than the natural condition of the receiving stream as long as the minimum treatment requirements established under this chapter are met.
(2) "Natural" refers to conditions or material present from runoff or percolation over which humans have no control or from developed land where all reasonable land, soil, and water conservation practices have been applied. Conditions resulting from the reasonable operation of dams on July 1, 1971, are natural.
History: En. Sec. 121, Ch. 197, L. 1967; amd. Sec. 1, Ch. 21, L. 1971; amd. Sec. 1, Ch. 455, L. 1975; R.C.M. 1947, 69-4801(2); amd. Sec. 2494, Ch. 56, L. 2009.
Structure Montana Code Annotated
Title 75. Environmental Protection
Part 3. Classification and Standards
75-5-301. Classification and standards for state waters
75-5-303. Nondegradation policy
75-5-304. Adoption of standards -- pretreatment, effluent, performance
75-5-305. Adoption of requirements for treatment of wastes -- variance procedure -- appeals
75-5-306. Purer than natural unnecessary -- dams -- definition
75-5-307. Hearings required for classification, formulation of standards, and rulemaking
75-5-308. Short-term water authorizations -- water quality standards
75-5-310. Site-specific standards of water quality for aquatic life
75-5-311. Local water quality districts -- department approval -- local water quality programs
75-5-312. Temporary water quality standards
75-5-315. Outstanding resource waters -- statement of purpose
75-5-317. Nonsignificant activities
75-5-318. Short-term water quality standards for turbidity
75-5-320. Temporary water quality standards variances
75-5-321. Transition for nutrient standards
75-5-322. through 75-5-324 reserved