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36.14.503    INSTRUMENTATION

(1) A means to measure the reservoir water level to within one-tenth of a foot is required for all dams. The measurement must be correlated with the capacity of the reservoir.

(2) Any dam that exceeds 50 feet in height must have a sufficient number of piezometers adequately monitoring the piezometric surface within the dam to identify unusual changes in seepage characteristics of the dam.

(3) All dams must have an adequate seepage monitoring and collection system.

(4) The department shall specify any other necessary instrumentation in the permit based upon the design being implemented and the information acquired during an investigation.

History: 85-15-110, MCA; IMP, 85-15-210, 85-15-213, MCA; NEW, 1988 MAR p. 2489, Eff. 11/24/88.

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