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REQUEST FOR COUNCIL ACTION Date: 4/13/2026 Item No.: 10.c. Department ApprovalCity Manager Approval Item Description:Adopt Resolution Awarding Construction Contract for 2026 Sanitary Sewer Lining Project (26-06) 1 2 Background 3 The majority of the City’s sanitary sewer mains were constructed in the late 1950’s and 4 early 1960’s, utilizing clay tile and reinforced concrete pipe. Over time the joints have failed, 5 allowing root intrusion. The pipe material is also susceptible to cracking and construction 6 damage. The City began the sewer lining program in 2006 to rehabilitate the sewer mains 7 and extend the life of our sanitary sewers by 50 years or more. Lining technology installs a 8 new resin pipe inside the original clay tile or reinforced concrete pipe sewer main without 9 digging up city streets, which results in minimal disruption to residents during construction. 10 The liner pipe is inserted into the main through existing manholes and cured in place with a 11 heat process. Each segment is typically completed in one working day. Service line 12 connections are reopened using a robotic cutter and remote cameras. During the process, 13 existing flows are bypassed using pumps. This type of rehabilitation prevents groundwater 14 from entering the sanitary system, so it can be credited toward the Metropolitan Council 15 Environmental Services inflow/infiltration surcharge and eligible for regional grants. 16 17 Staff identified lining for approximately 5.4 miles in areas observed as having root intrusion 18 or infiltration problems and having sewer pipe ratings of 3 or less (on a scale of 1-5, 5 being 19 in the best condition). On December 2, 2024, Council approved a design contract with 20 Bolton & Menk, Inc., to design and provide cost estimates to perform this work. The 21 decision to hire a design consultant was driven by the technical complexity of the project, 22 particularly regarding the need to bypass larger flows under major highways, railroads and 23 other high-volume traffic areas. Engaging a qualified consultant for design helped the City 24 mitigate potential risks associated with the bypass operation, ensure clear guidance is 25 given to contractors in the plans and specifications to obtain equitable bids, reduce project 26 delays, and ensure a cost-effective and efficient Cured-in-Place Pipe (CIPP) lining project. 27 The 2026 project is a continuation of this design work completed in early 2025. 28 29 The 2026 Sanitary Sewer Lining Project identified lining for approximately 3.75 miles in 30 areas observed as having root intrusion or infiltration problems and having sewer pipe 31 ratings of 3 or less (on a scale of 1-5, 5 being in the best condition). 1.88 miles of the 3.75 32 miles was identified by the design consultant’s 2025 plans, and an additional 1.87 miles 33 was added to this year’s project based on critical pipe conditions identified by staff. The 34 total 3.75 miles was based on available budget for 2026. On April 2, 2026, the City received Page 1 of 2 Qbhf!31!pg!4: