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Ms. Rachel Juba February 5, 2021 Page 2 Utility Plan 4. As identified in the City's Comprehensive Water Supply and Distribution Plan, a 24" trunk watermain is proposed to be extended north from the water tower location. The construction plans identify this 24" trunk watermain being extended through the development to the northern property line, with the City of Hugo paying for oversizing costs. 5. The City's Comprehensive Sanitary Sewer Plan identifies the way in which properties are to be served by sanitary sewer. A sanitary sewer connection to the MCES Interceptor is identified at 165th Street with a 36" trunk main, providing service to a large portion of land east of TH 61. The proposed plan identifies a connection to the MCES Interceptor approximately 1320 feet south of 1651h Street which will ultimately make the development of the area more feasible considering the watermain is at the southwestern portion of the site and the connection to the MCES interceptor per the comprehensive sanitary sewer plan is approximately 1320 feet from the northern border of the development. 6. Due to the size of the and projected long-term flow anticipated in this sewer extension an Environmental Assessment Worksheet (EAW) would normally be required, however the City had prepared an Alternative Urban Areawide Assessment (AUAR) for the Everton Area in 2001. This plan has been updated every 5 years and contains the necessary information to fulfill the EAW requirements. 7. This trunk sanitary sewer is proposed to be constructed on the north property line of the development. The applicant has provided signed drainage and utility easements for the adjacent property to the north. The applicant will also be required to provide drainage and utility easements to the allow the sanitary sewer to be extended to the northeast up to 165th Street. Easements through parcel (PIN 0803121340002) will ensure the ability to extend the sewer up to 165th Street should the need arise. 8. Staff has asked MCES what process, if any, is required for the change in location of the connection to the MCES Interceptor from what is identified in the Comprehensive Sanitary Sewer Plan. Stormwater Management/Wetlands 9. Applicant is meeting rate control and water quality stormwater requirements through multiple stormwater ponds adjacent to and hydraulically connected to the wetlands throughout the property. 10. The City requested the development use water reuse to provide the required water quality volume however the applicant has provided calculations and arguments which demonstrates why this isn't feasible due to site constraints. Due to the minimal grade change across the site and the presence of wetlands throughout the site the stormwater ponds are hydraulically connected with the wetlands which restricts the amount of water which can be drawn from a stormwater pond for irrigation. For other developments that utilize a water reuse system, the ponds can draw down 3-4 feet without any negative consequences, however due to the hydraulic connection of the ponds and wetland, even drawing the pond down 6" has negative impacts on the wetlands. The applicant provided calculations showing that if water reuse were implemented, the wetlands would likely only receive water 1-2 times per year which would cause a loss of the onsite wetlands and would not be permitted under WCA regulations. 11. The applicant has applied for and received Conditional Approval Pending Receipt of Changes (CAPROC) for a Rule I Permit with RCWD for work adjacent to and within JD 3. All changes requested by RCWD will need to be addressed. 12. The applicant is showing that all proposed lots meet the City's freeboard requirements. 13. Additional detailed redline drainage comments have been provided to the applicant and will need to be addressed prior to the issuance of the stormwater permit. 14. A wetland delineation on the parcel was approved during the fall of 2018. S:\Users\R_Juba\DEVELOPMENT PROJECTS\The Meadows at Hugo\Preliminary Plat and PUD\Engineer Comments\LTR-rjuba-Meadows at Hugo Pre Plat-PUD - 20210204.docx