06-22-2026 Council Packet - Laserfiche WebLink

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Staff Report To: Mayor Fischer and Members of the City Council From: Eric Seaburg, City Engineer Bill Dircks, Public Works Director Date: June 22, 2026 Re: County Road B Lift Station and Force Main Upgrades – Approve Plans and Authorize Bidding Action To Be Considered: Motion to approve, table, or deny the following: • Final construction plans for the County Road B lift station and force main upgrades, and authorize project bidding. Background: The city has owned and operated a sanitary sewer lift station and force main in the southwest corner of the city, between Hwy 36 and County Road B, since approximately 1970 (installed with city Project 70-4). One of the city’s eight lift stations, the County Road B lift station serves approximately 80 acres and customers that include Abbott Laboratories, Joe’s Sporting Goods, Cub Foods, Roseville Harambee Middle School, and the planned Lupe Senior Housing Development at 99 County Road B. A project location map is included for reference. The initial lift station that was installed in 1970 was replaced with a new precast concrete structure and replacement pumps in 2000. The existing 4-inch-diameter force main that carries wastewater under Hwy 36 to Viking Drive is still original, dating to 1970. As part of the proposed Lupe Senior Housing Development, in 2023, city staff performed a full evaluation of the lift station and force main infrastructure to determine if it could handle the project flows from the incoming development. The analysis concluded that the existing infrastructure is both undersized and nearing the end of its useful life, indicating that both an expansion and rehabilitation be completed. As such, a lift station improvement project was included in the 2026-2035 Capital Improvement Plan for completion in 2026. The developer of the Lupe Senior Housing Development agreed to partially fund the project, an amount that was previously negotiated to be $200,000. The improvements include a new 8-inch force main across Highway 36, along with shallowing and slightly re-routing the gravity sewer main coming from County Road B into the lift station to increase the capacity of the existing wet well. New, more efficient pumps will be installed along with an aerator to keep the water moving in the wet well, which decreases the formation of grease chunks and other solids that can be trouble for the pumps.