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• I.''■1 <br />( • <br />S' <br />December 14,1990Permit Application No. 90-126 <br />Applicant: QairRood <br />2215 Kenwood Way <br />Wayzata, MN 55391 <br />Location: City of Orono, Sec. 17DD <br />Purpose: Digging to create an open water pond in a wetland and fill and excavation in a <br />floodplain area. <br />Applicable Rules: Rule C - Floodplain Alteradon <br />Rule D - Wetland Alteration <br />Rule E - Dredging <br />Exhibits Reviewed: <br />1. <br />2. <br />3. <br />Pennit Application 90-126 received October 8.1990. <br />Grading plan received October 8,1990. <br />frLetter fiom the District to the applicant dated Oaober 22,1990 informing him of the Board <br />action on October 18,1990. <br />4. Revised ate plan received December 10,1990. <br />5. Hydiolo^c odculanoos received Deceoibcr 10,1990. <br />6. Map delineating subwatershed received December 10,1990. <br />Staff Review Siimmflryr <br />The project involves dredging to remove 2,774 cubic yards of material from a wedand to provide <br />tm open water pond 5 feet deep with 4:1 side sieves. The project is located north of the <br />intersection of Navatre Lane and Hillside Place in the Qty of Orono. The wetland is connected to <br />Crystal Bay, Lake Minnetonka by a culven with an invert elevation of 927.93. Therefore, this <br />wetland acts as part of the floodplain for Lake Minnetonka. Spoil is to be placed adjacent to the <br />pond at a slope of approximately 3.5:1. Fill is to be placed within the wedand along the cast edge. <br />Excavation is m be provided alcmg the west edge to compensate for storage capacity loss wit^ the <br />floodplaita. It is unclear from the information submitted whether the proposed excavation is at the <br />same elevation as the fill <br />This project was reviewed and tabled at the regularly scheduled October meeting of the Board of <br />Managers. The Orono Planning Commission has tabled this project. The next Planning <br />Commi^on meeting is Janua^ 22, 1991. District rules specify that the Managers will review <br />applications fOT permits iiwolving land development only after the applicant demonstrates that the <br />plan has receive preliminary approval from the municipality indicating compliance with the <br />municipal plans. <br />Recommendation <br />Table <br />1. <br />ling recent of: <br />Sta^e/storage relationship for the wedand for both existing and proposed conditions <br />begmning at the runout elevation of Lake Minnetonka of 928.6 providmg no net decrease in <br />stormwater storage capacity at various stages. <br />2. Revised plan providmg maximum spoil disposal slopes of 4:1 and revised silt fence <br />installation detail providing wire mesh reinforcing for the rilt fence and posts spaced no <br />grea^ than 4 feet apart <br />3. Review and q>proval by the Qty of Orono. <br />Pro^ct Review Status hv Other fSnvcrnmcntal Units: <br />of Orono is cunendy reviewing this project <br />8 of 19 <br />iihiiniif r irmn