05-27-25 - Council Meeting Agenda

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Ms. Katie Larsen 04/02/2025 Page 4 north end for a future connection to Ash Street (CR 32) to meet the City's 2040 Comprehensive Plan. The second connection will utilize the existing 8" stub as part of the existing assumed White Bear Lake Township infrastructure that is located across the Rapp farmland in Lino Lakes . Otherwise, the development will include a water system with 8- inch diameter water main and various stub sizes being extended to each lot depending on its use. Current and future ownership and maintenance of all existing utility infrastructure will need to be clarified between the developer North Oaks Farms, White Bear Lake Township, and the Cities of North Oaks and Lino Lakes. Comments: 1. Remove the proposed 12" gate valve on the north leg of the tee. The gate valve will be installed with the future extension of the line to the north. 2. The existing watermain stub at the roundabout is 12" not 8" 3. Locate proposed gate valves consistently on all water service stubs 4. Label all water service stub size, length, and material 5. Provide minimum 1:1 easement for watermain outside the right of way (minimum 20' centered on the utility) 6. Extend utilities a minimum 10' past the storm sewer at the Ash Street intersection 7. Shift gate valve from northern leg to southern leg of 12" x 8" cross 8. Maintain minimum required 10' horizontal separation between watermain and storm sewer alignments 9. Note separation between sanitary sewer and water services across Wilkinson Way a. Some services will need to be shifted to maintain separation. • Sanitary Sewer Sanitary sewer collection for the Wilkinson Waters Development is proposed to connect to the existing assumed White Bear Lake Township infrastructure that is located across the Rapp farmland in Lino Lakes. There is also an existing 18 inch sanitary sewer line located at the intersection of Wilkinson Lake Blvd/CR J (81)/CSAH 21 that is believed to be owned and maintained by White Bear Township as well and is planned to serve Lino Lakes sewer district 4. This will require a Joint Powers Agreements between the developer North Oaks Farms, White Bear Lake Township, and the Cities of North Oaks and Lino Lakes. Per the Centerville Road Sanitary Sewer memo updated 4/22/21, the City of Lino Lakes service district 4 has 354 GPM capacity reserved in the Centerville Road trunk line. There is an additional lift station planned in the future to serve the remainder of district 4 that will pump into the 18" line located at the intersection of Wilkinson Lake Blvd/CR J (81)/CSAH 21. This forcemain can be drilled within City or County right of way in the future. The 8 inch line that is being required to extend to Ash Street would only serve a small localized area of sewer district 4. The site will otherwise be served by 8- inch diameter main along with various sized service pipes being extended to each lot depending on its use. An additional sanitary sewer stub will be extended to the north at Ash Street (CR 32) for future connections. Current and future ownership and maintenance of all existing utility infrastructure will need to be clarified between the developer, White Bear Lake Township, and the Cities of North Oaks and Lino Lakes. Additionally calculations will need to be made for the increased flows to the existing lift station in North Oaks and whether upgrading of the pumps will need to occur. Wilkinson Waters Development - Engineering Review