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Ms. Rachel Juba October 20, 2022 Page 2 <br />C:\Users\rachel.juba\AppData\Local\Microsoft\Windows\INetCache\Content.Outlook\O7PY7DSU\LTR-r juba - Hugo East Apartments - Pre Plat-PUD - 20221020.docx <br />Utility Plan 7. There will be an 8” watermain looped through the site by connecting to the existing 12” DIP in Forest Boulevard/US Highway 61 and to the existing 8” DIP stub on the west end of 150th Street. Additional future watermain stubs will also be provided to the Hugo Estates manufactured homes to the south. A 20’ easement is being provided for the entire length of the looped watermain. 8. Sanitary sewer is proposed to be extended south from the existing sanitary sewer manhole in the Francesca cul de sac. An easement will need to be coordinated with the adjacent property to the north for extending the utility. The applicant could also evaluate connecting to the sewer further to the west of Francesca Avenue. 9. The applicant is proposing a land use change from Industrial and Medium Density Residential to High Density Residential. Staff has reviewed sewer flows generated and have determined there is an increase in sewer flows generated from the proposed land use change. The increase is nominal, and the City’s sanitary sewer system can accommodate the additional flow. This change will require a comprehensive plan amendment, however early indications are that due to the minor nature of the proposed change, these amendments would be reviewed by MCES staff administratively. <br /> <br />Stormwater Management/Wetlands 10. The site is proposing to meet stormwater management requirements through the use of onsite infiltration basins; one large centrally located infiltration basin and one ~1,000 linear foot long basin behind the proposed lots on the east side of the site. Due to concerns over difficult future maintenance, it is recommended the site consider removing the linear basin and draining the rear lot area through storm sewer to the proposed central infiltration basin. Site design would need to be confirmed to be in compliance with rate control and water quality requirements if modifications are made. Water reuse is not proposed for the site and is not recommended based on the limited amount of runoff from the site available for reuse. 11. It should be confirmed no work is proposed within the floodway in the northwest corner of the site. This should be determined by referencing the floodway elevation from the FEMA FIS rather than just the shapefile boundary for the area. No work is proposed within the RCWD regulated floodplain. 12. It should be confirmed if a MnDOT drainage permit is required for the work within the MnDOT Highway 61 right of way. 13. Drainage and utility easement is required over the proposed stormwater management basins up to the high-water level at a minimum. 14. Three feet of freeboard between basin high water levels and adjacent building low openings is required but is not currently being provided for all proposed buildings. 15. Additional detailed redline drainage comments have been provided to the applicant and will need to be addressed prior to the approval of the preliminary plat plans and issuance of the stormwater permit. 16. A MN Joint Application was submitted for a wetland boundary and type approval for the parcel on September 9 and the field review was completed on September 13. The delineation resulted in no wetlands which was confirmed during the field visit. A notice of