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The subdivider shall consider the retention of natural stormwater/snowmelt drainage <br /> patterns in the design of his proposed subdivision. The subdivider shall be responsible to <br /> provide adequate drainage facilities for his development and upstream properties. <br /> 1. Drainage Plan(s). All subdivisions shall demonstrate provisions for <br /> adequate surface or subsurface runoff of storm water and snow melt directed to <br /> natural drainageways. <br /> 2. All natural drainageways draining properties upstream from the subject <br /> property shall be identified and preserved, and no structures shall be less than one <br /> (1) foot above the water level in the drainageway created by a storm of a 100- <br /> year, 24-hour rain event. No filling of areas inundated by the 100-year, 24-hour <br /> rain event shall be allowed. <br /> 3. Additional runoff for a 100-year, 24-hour rain event from all streets and <br /> building sites at build-out shall be accounted for and maintained within the <br /> development. <br /> 4. Natural or manmade storage areas shall be utilized where needed and shall <br /> be designated by drainage and utility easement by the subdivider. All storage <br /> areas shall be vegetated and designed to lower naturally after a storm. <br /> `-' 5. All drainage structures or improvements provided shall be sufficient in <br /> size to pass a 100-year, 24-hour storm event through the natural drainageway. <br /> 6. All areas disturbed by grading, street construction or structure installation <br /> shall be covered with a minimum of 3-inches natural topsoil and seeded. <br /> Drainageways over 2% in gradient shall, at a minimum, be sodded. <br /> 7. All parking areas, heavy use areas, storage areas and impervious area shall <br /> be diverted to a basin designed to allow entrapment of silts and nutrients prior to <br /> discharge to a natural drainageway. <br /> 8. There shall be no discharge of untreated stormwater to a water body. <br /> 9. Erosion control measures shall be provided as needed to prevent and/or <br /> contain erosion. <br /> Section 17-9.10 DEDICATION TO THE PUBLIC—STANDARDS <br /> 1. In accordance with the provisions of Section 462.358 of the Minnesota <br /> Statutes, or amendments thereto, the subdivider shall dedicate, to the public, lands <br /> for highway rights-of-way, street rights-of-way, utility easements, wetland <br /> Pequot Lakes Staff Report 4(a)-8 <br /> May 15,2014 <br />