Montana Title 85. Water Use § 85-15-213. Periodic inspections after construction

(1)(a) A high-hazard dam, whether or not previously permitted by the department, must be inspected as often as considered necessary by the department, but at least once every 5 years, in order to ensure the continued safe operation of the high-hazard dam.

(b) The department determination that an inspection is necessary more often than once every 5 years, as provided in subsection (1)(a), must be based on substantive evidence, and the reasons for that determination must be stated in writing.