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75 <br />MINNESOTA RULES 6115.0360 <br />Subp. 3. Removal. Before commencing removal, the owner shall comply with the application <br />requirements of subpart 1. After removal, the owner shall submit evidence as to the manner in <br />which the work was performed and the conditions obtained after the removal. The commissioner <br />shall inspect to determine that a sufficient portion of the dam has been removed to eliminate the <br />hazard directly attributable to the presence of the dam. <br />Statutory Authority: MS s 105.535 <br />History: L 2003 c 112 art 2 s 50; L 2009 c 101 art 2 s 109 <br />Published Electronically: August 7, 2009 <br />6115.0360 INSPECTIONS. <br />Subpart 1. Hazard classification. The commissioner shall make initial inspections of each <br />dam in the state to determine the appropriate hazard classification or exemption according to criteria <br />in part 6115.0340. <br />Subp. 2. Dam safety. The commissioner shall make an initial detailed systematic technical <br />inspection and evaluations of every Class I, II, or III dam in order to assess the general safety <br />conditions including: <br />A. a review and analysis of available data on the design, construction, and operation; <br />B. a visual inspection of the dam and downstream and upstream areas: <br />(1) an examination of significant structural, geotechnical, hydraulic, and hydrologic <br />features including, where applicable, electrical and mechanical equipment for the operation of <br />control facilities; <br />(2) evidence of leakage, erosion, seepage, slope instability, undue settlement, <br />displacement, tilting, cracking, deterioration, and improper functioning of drains and relief wells; <br />and <br />(3) adequacy and quality of maintenance and operating equipment and procedures; <br />C. a report on general condition including, when possible, an assessment of storage capacity, <br />hydraulic and hydrologic capabilities, structural stabilities, and any other conditions which constitute <br />a hazard based upon current prudent design considering the size and hazard class of the dam. <br />The safety evaluations involve constraints on water control such as blocked entrances, restrictions <br />on operation of spillway and outlet gates, if any, inadequate energy dissipators or restrictive channel <br />conditions, significant reduction in impoundment capacity by sediment deposits and for waste <br />impoundments, the material balance. Where essential design data are lacking, evaluations of <br />watershed characteristics, rainfall, and impoundment records may be used to evaluate effects of <br />the dam. <br />The report shall determine the need for emergency measures or actions; corrective actions <br />relating to design, construction, and operation; and additional detailed studies, investigations, and <br />analyses. <br />Copyright © 2019 by the Revisor of Statutes, State of Minnesota. All Rights Reserved. <br />