09/10/2025 PZ Combined Packet - Laserfiche WebLink

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Ms. Katie Larsen 09/04/2025 Page 8 •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 City would be open to extending the 18 inch through the site to serve as much of the development as possible. However, due to depth, the senior apartments would still need to be connected to the deeper 8 inch line as proposed. A future forcemain tie in to the 18 inch would need to be accommodated. This will be further evaluated through the preliminary plat process. 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. Comments: 1.Extend the existing 18" sanitary sewer stub outside the roadway into right of way as shown in the attached redlines ISG Response (7/14/2025)Sanitary sewer stub has been extended to the ROW WSB Response/Comment (9/4/2025) Connection has been recently updated and is under separate review 2.Provide minimum 1:1 easement for watermain outside the right of way (minimum 20' centered on the utility) a.The sanitary sewer between Lots 3 and 4 Block 1 would require a 40’ total easement ISG Response (7/14/2025)Easement lines have been updated to provide 20’ minimum or 1:1 easement for sanitary sewer outside of the ROW WSB Response/Comment (9/4/2025) Complete 3.Extend utilities a minimum 10' past the storm sewer at the Ash Street intersection ISG Response (7/14/2025)Utility stubs have been extended past the culvert at the Ash Street intersection WSB Response/Comment (9/4/2025) Complete Wilkinson Waters Development - Engineering Review