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HomeMy WebLinkAbout6.g. Comprehensive Sanitary Sewer Plan Amendment for the Boulder Ave Extension Project, City Project 2022-02\\rsm-file\common\city clerk\agenda items\approved items\6.g. comprehensive sanitary sewer plan amendment for the boulder ave extension project, city project 2022-02.docx EXECUTIVE SUMMARY City Council Meeting: November 15, 2022 AGENDA ITEM: Comprehensive Sanitary Sewer Plan Amendment for the Boulder Ave Extension Project, City Project 2022-02 AGENDA SECTION: Consent PREPARED BY: Brian Erickson, PE, City Engineer AGENDA NO. 6.g. ATTACHMENTS: Resolution, Maps APPROVED BY: LJM RECOMMENDED ACTIONS: Adopt a Resolution Amending the Comprehensive Sanitary Sewer Plan for the Boulder Avenue Extension Project, City Project 2022-02 BACKGROUND The Boulder Avenue Street and Utility Extension Project, City Project 2022-02, was awarded to S. R. Weidema at the October 4, 2022 Council Meeting. During the sanitary sewer extension permitting process staff was notified of a need to amend the Comprehensive Sewer Plan. During the design process for Boulder Ave, an extension of sanitary sewer main lines was included within the roadway corridor to serve undeveloped portions of the business park. As this main was extended, stubs to the property lines were included for undeveloped parcels to facilitate future development. The eastern sanitary stub connects to a parcel within the Business Parkway Sewershed of the approved Comprehensive Sewer Plan (Plan). This stub would serve approximately 20 acres of the 66-acre parcel and route the sanitary to the City’s Lift Station 3 (LS3) Sewershed. Since these two sewersheds are served by different Metropolitan Council Environmental Services (MCES) interceptor sewer s, MCES needs the city’s Plan to be updated. The figures below show the changes with the portion added to LS3 noted in the right figure. Approved Comprehensive Sewer Plan Proposed Comprehensive Sewer Plan Because this change is minor, MCES will process this change as an administrative review. Staff and WSB have discussed this amendment with MCES and they expressed no concerns regarding this change. Bolton & Menk has since updated the figures and appropriate flow tables within the Plan. Generally, the changes resulted in a minor increase in acreage and flow to LS3 and a corresponding reduction of acreage and flows to Business Parkway. The flow increase is approximately 5% for LS3 and a reduction of 5% for Business Parkway. RECOMMENDATION Staff recommends Council adoption of the attached resolution amending the Comprehensive Sewer Plan. CITY OF ROSEMOUNT DAKOTA COUNTY, MINNESOTA RESOLUTION 2022-XX A RESOLUTION APPROVING A COMPREHENSIVE SANITARY SEWER PLAN AMENDMENT FOR BOULDER AVENUE EXTENSION PROJECT, CITY PROJECT 2022-02 WHEREAS, the City of Rosemount has awarded the Boulder Avenue Extension project to extend road and public utilities, and; WHEREAS, the project will extend sanitary sewer main to an area currently with in the 2030 Municipal Urban Service Area (MUSA) line, and; WHEREAS, the sanitary service will change the areas within the City’s Lift Station 3 (LS3) sewershed and the Business Parkway sewershed, and; WHEREAS, these sewersheds are served by different Metropolitan Council Environmental Services interceptor sewers, and, WHEREAS, the change requires an amendment to the City of Rosemount Comprehensive Sanitary Sewer System Plan. NOW, THEREFORE, BE IT RESOLVED, the City Council of the City of Rosemount hereby approves an amendment to the Comprehensive Sanitary Sewer System Plan to change the areas included in the Lift Station 3 and Business Parkway sewersheds. All amendments are subject to approval of the Comprehensive Sanitary Sewer System Plan amendment by the Metropolitan Council. ADOPTED this 15th day of November, 2022. William H. Droste, Mayor ATTEST: Erin Fasbender, City Clerk Southeast MWCC08 MWCC09 LS 3 MWCC08 South Central Northwest Southwest LS 5 LS 4 150th Connemara Lan-O-Ken MWCC10 Canada LS 8 LS 1 LS 9 Biscayne Danville Business Parkway LS 7 LS 6 Auburn Ma p D o c u m e n t : C : \ U s e r s \ t i m o l \ A p p D a t a \ L o c a l \ T e m p \ a r c E 7 E B \ 6 _ 1 E x i st i n g a n d F u t u r e S e w e r s h e s . m x d D a t e S a v e d : 1 0 / 2 5 / 2 0 2 2 1 0 : 2 5 : 3 3 AM Comprehensive Sanitary Sewer System Plan City of Rosemount October 2022 Figure 6-1 Existing and Future Sewersheds Legend Name 150th Auburn Biscayne Business Parkway Canada Connemara Danville LS 1 LS 3 LS 4 LS 5 LS 6 LS 7 LS 8 LS 9 Lan-O-Ken MWCC08 MWCC09 MWCC10 Northwest South Central Southeast Southwest 01,500 Feet Source: !I