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