10-07-24 - Council Agenda Packet

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Ms. Katie Larsen 09/05/2024 Page 2 Water Supply The City's 2040 Comprehensive Plan identifies this area being served by Lino Lakes via a 12" trunk water line. Lino Lakes City water is about 1.5 miles away and the City is not considering an extension at this time. In the interim the site will be supplied by the existing White Bear Lake Township infrastructure that is located across the Rapp farmland in Lino Lakes and into the north end of North Oaks. This will require a Joint Powers Agreement between all of the Cities involved. The development is proposing two (2) current 8" connections with an 8" stub at the north end for a future connection to Ash Street (CR 32). The connection at the south end will be required to be a 12" connection and the 12" watermain will be extended to the north end to meet the City's 2040 Comprehensive Plan. 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. • 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 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. Wilkinson Waters Development - Engineering Review