Correspondence with MCWD and city re shoreline work

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❑ Must show the distance waterward of the treatment placement(hard armoring inert material, such as riprap, shall be placed no more than 5 feet waterward of the OHW); ❑ Must provide a description of the underlying soil materials that will support the treatment; ❑ Must show the finished slope. Finished stabilization slopes shall be 3:1 or less where practical and feasible. Finished slopes greater than 2:1 shall be considered retaining walls. ❑ Riprap shall not extend higher than the top of the bank or 2 feet above the 100 year floodplain elevation, whichever is lower; Provide a detailed erosion control and site stabilization plan for the proposed project which includes: ❑ Identify on a plan sheet the proposed access route for all land based application; ❑ Identify the location of any material stockpile locations; ❑ Provide a comprehensive stabilization plan for any disturbed areas on site; ❑ Identify on a plan sheet the floating silt curtain for any work below the normal water level(required for all land-based installations). 4. Sandblanket: Site plan showing: ❑ Property lines ❑ Indication of where sand blanket was applied ❑ Existing elevation contours of adjacent upland area ❑ Ordinary high water and 100-year high water elevations Profile,cross-section and/or topographic contours(no greater than 1 foot) showing: ❑ Existing and proposed elevations Sandblanket must meet the following dimensional requirements: ❑ Length no more than '/2 the length of shareline or 50 feet, whichever is less ❑ Depth no more than 6 inches ❑ Width no more than 10 feet(waterward of OHW) 5. Floodplain Alteration: Determination by a professional engineer of the 100-year high water elevation before and after the project. Computation by a professional engineer of cut, fill and change in water storage capacity resulting from proposed grading. 6. Wetland Alteration: Complete delineation report, in accordance with the guidelines provided by the Board of Water& Soil Resources, for the wetland near the project area. The report must be submitted for boundary&type approval under the Minnesota Wetland Conservation Act no later than June 30,2012. Please provide all above requested items by 4:30 PM on June 15,2012 (with the exception of the delineation report that must be submitted no later than June 30, 2012),or the matter will be processed for formal enforcement action before the MCWD Board of Managers. Thank you for your immediate attention to this matter. If you have any questions, please contact me at(952)641-4505 bwisner@minnehahacreek.org. Sincerely, Brandon Wisner