02-18-2025 Planning Commission Packet (2)

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January 27, 2025 Pass Family Trust Attn: Civil Methods- Kent Brander 215 North Arm Lane Orono, MN 55364 CC: City of Orono- Melanie Curtis RE: MCWD Permit Application #24-544: Idyllvale Shores Subdivision Development Current Status: INCOMPLETE Dear Applicants, The Minnehaha Creek Watershed District (MCWD) received your first submittal on 11/05/24 and found it to be incomplete. An incomplete letter was sent on 11/14/24, which outlined outstanding items. Based on the updated plans submitted on 01/06/25, the application has been reviewed and found to be incomplete. To help ensure a complete submittal, below is a detailed summary of revisions and information that will be needed in order to comply with MCWD’s Erosion & Sediment Control, Stormwater Management, Wetland Protection, Waterbody Crossings & Structures, and Floodplain Alteration Rules. Project Understanding Based on MCWD’s understanding of the project scope, Pass Family Trust is proposing to create a 5- parcel subdivision at 215 North Arm Lane in Orono, MN. Erosion Control Rule MCWD’s Erosion Control Rule is triggered by projects that propose to disturb more than 5,000 square feet or move 50 cubic yards of material. The Project proposes to disturb 7.31 acres and excavate 10,000 cubic yards; therefore, the rule is triggered. Current submittals meet these requirements. Floodplain Alteration Rule MCWD's Floodplain Alteration Rule is triggered when there is work below the 100-year flood elevation. The 100-year high water elevation for Lake Minnetonka is 931.5 feet (NGVD 29). The 100-year high water elevation for the tributary is unknown at this time and will need to be determined by the applicant. This rule requires that compensatory storage be created to offset any proposed volume of fill. The Project proposes to disturb land at or below the 100-year high-water level or proposes fill to be 154