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City outlines phased rehabilitation and slip‑lining plan for Ames transmission main
Summary
Staff described a three‑phase Ames waterline rehabilitation, identifying creek crossings already under construction, an estimated $28 million total cost, and a likely two‑phase execution based on available congressional and P3 funding; a loan or bond financing may be needed for remaining work.
City staff briefed commissioners on the Ames waterline transmission main rehabilitation project, describing active creek‑crossing work, a slip‑lining plan for aging prestressed concrete pipe, and funding options including congressional appropriation and public‑private (P3) funding.
The update is significant because the Ames/Drummond wellfield and its 30‑inch prestressed concrete cylinder pipe (PCCP) trunk supply a majority of the city's water; staff said that trunk is near the end of its useful life and requires rehabilitation to maintain supply reliability. Maralee (presenting staff member) said the overall project…
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