09-08-25 - City Council Agenda - Laserfiche WebLink

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Ms. Katie Larsen 08/06/2025 Page 2 Nature Refuge North Addition Engineering Review Comments: 1. Show EOF elevations , locations, and routes for all low points in the paved and green spaces. Carlson (4/25/2025) EOF’s have been added to all low points and ponds. WSB (5/23/2025) Verify proposed EOFs where elevations are undetermined or where drainage may overflow in multiple directions (see plan comments) Carlson (6/6/2025) See additional regional EOF exhibit attached. The limiting factor for EOF will be the existing home to the north at approximately 906.5 WSB (6/25/2025) Complete a. EOF elevations must meet minimum freeboard requirements with building lowest opening elevations (LOEs) Carlson (4/25/2025) EOF’s elevation have been verified to meet freeboard requirements. WSB (5/23/2025) Discuss freeboard requirements for Lot 168 (LO/WO) Carlson (6/6/2025) Rear of pad drains towards Pond 600. The northern side of the house is shown to drain towards the CBMH. The elevation of the north side of the house should remain above 10.0 to maintain freeboard. The portion of the house that is further south and drains towards Pond 600 should remain above 07.5 to maintain freeboard. WSB (6/25/2025) Complete - ‘side berm’ will need to be extended such that overflow drainage from the CB goes over the 09.0 EOF without going towards the swale by the house 2. WSB (5/23/2025) Describe removing the existing retaining wall and coordinating grading and restoration with the adjacent property owner east of Lot 101 Carlson (6/6/2025) All coordination with the existing homeowner to be done by M/I Homes. Easement is in place to fill along the side of their house and match front yards and back yards. Homeowner to be notified prior to any work being done on their property. Overall, this will provide a better yard for both the existing home and new home. WSB (6/25/2025) Complete – To be addressed with future plans and Lot 1 Block 1 building permit 3. WSB (5/23/2025) Label all high points (particularly between lots along side lot lines – some missing) Carlson (6/6/2025) Added. WSB (6/25/2025) Complete • Stormwater Management Stormwater management for the Natures Refuge North Addition consists of storm sewer draining streets and yards, two sedimentation basins, and a large basin excavated for fill material. The stormwater systems shall meet the City’s and Rice Creek Watershed District’s (RCWD) Stormwater Management requirements. All proposed future public streets must meet City design standards. Existing and proposed discharge rates are summarized below. Pre- and Post- Development Discharge Rates (cfs) Condition 2-Year 10-Year 100-Year 10-Day Snowmelt Page 108 of 168