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Royal Oak approves about $750,000 extension for sewer-lining program
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Summary
The commission approved a contract modification to extend in-situ cured-in-place pipe (CIPP) sewer-lining with the incumbent contractor for the 2025 program covering 27 locations; staff said CIPP extends sewer life by decades and reduces surface disruption compared with full replacement.
The Royal Oak City Commission unanimously approved a contract modification Monday to continue cured-in-place pipe (CIPP) sewer lining across the city, extending work with the incumbent contractor for the 2025 program.
City engineer Donahue described CIPP lining as a process that inserts a resin-impregnated flexible liner into an existing pipe and cures it with hot water or steam to create a smooth interior surface. He said the technique typically cures in two to six hours for a pipe segment, is cost-effective compared with full replacement and can extend sewer service life by 50 to 100 years depending on flow conditions.
Donahue said the 2025 program covers 27 locations the city identified from its televised inspections on a 10-year cycle. "We typically will line from manhole to manhole," Donahue said, noting manholes are usually spaced 300 to 600 feet apart. He said the contractor was the low bidder in 2024 and scored highest under the city—s responsible contractor ordinance.
Commissioners asked about impacts on residents during lining operations and notification procedures. Donahue said residents in affected blocks receive door-hanger notices and are asked to minimize water use on the day of lining; crews typically work to finish segments in a single day and may stay late if necessary.
Commissioner Hunt moved approval of the contract modification; Commissioner Macy seconded. The commission approved the extension by voice vote. Donahue described the contract extension as "just a touch under $750,000."
