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81 <br />MINNESOTA RULES 6115.0410 <br />(3) The commissioner shall make inspections for the purpose of securing conformity <br />with approved designs, plans, and specifications and shall require the owner to perform, at the <br />permittee's expense, work or tests as found necessary to disclose sufficient information to determine <br />if there is conformity. <br />(4) If, at any time as work progresses, the commissioner finds that changes are necessary <br />to protect health, safety, welfare, and the environment, the commissioner shall order the owner to <br />revise designs, plans, and specifications. <br />(5) At the commissioner's discretion, the commissioner may observe and approve <br />foundation preparation and may approve construction material placement on an intermittent or <br />continuing basis when field conditions dictate. The commissioner shall be notified at least three <br />days in advance of start of construction. <br />B. Permanent markers. At least one permanent marker for vertical and horizontal control <br />shall be established in the natural ground by the permittee in the vicinity of each dam so as to be <br />accessible and protected against disturbance throughout its existence. The permanent marker for <br />vertical control must be based upon datum and degree of accuracy based upon considerations of <br />the hazards involved and the size of the dam, as specified by the commissioner. <br />The permittee shall submit the locations of these permanent markers plotted on the best available <br />maps or plans within time limits prescribed in the permit. <br />C. Construction report. The permittee may be required to submit monthly reports on <br />construction observation and quality control, when construction is complex or hazardous, including: <br />daily construction documentation; foundation preparation and treatment, quality control tests; <br />records and summaries of actual tests of foundation and construction materials, cutoff trench, <br />grouting, etc; instrumentation installation and maintenance of records and readings; geologic <br />mapping, if any, of exposed foundations; of logs of drill holes and other exploration features, if <br />any, completed during construction; review and evaluation of disclosed field conditions by the <br />designer; and any other items which may be pertinent to a construction quality assurance program. <br />Subp. 10. As -built plans and data. Immediately upon completion of construction the permittee <br />shall file supplementary drawings or descriptions of the dam as actually constructed, or any other <br />items which may be of permanent value bearing on the adequacy and permanency of the dam. In <br />enlargements the data need apply only to the new work. <br />Subp. 11. Statement of completion and affidavit of cost. Within 90 days following completion <br />of construction, the permittee shall notify the commissioner, by certified mail, including a statement <br />of the designer or professional engineer in charge of construction inspection that to the best of <br />knowledge the dam was completed in accordance with the approved designs, plans, and specifications <br />and any revisions thereof. <br />As soon as practicable thereafter, the permittee shall file an affidavit stating the actual cost in <br />detail or that the permittee is unable to report the actual cost stating the reasons therefor. In the <br />latter event the commissioner shall make at the owner's expense an appraisal of the cost of <br />construction or enlargement and determine what further fee, if any, is required. If a further fee is <br />Copyright © 2019 by the Revisor of Statutes, State of Minnesota. All Rights Reserved. <br />