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Council approves replacement of two sand-gravel filters at city facility; consultant estimate cited
Summary
The council authorized a contract to replace two of the city's sand-gravel filter tanks after receiving bids; staff said replacement was more cost effective than rehabilitation and the project will be partly funded by a $1 million grant.
The City Council approved a contract to replace two sand-gravel filter tanks at a city water-treatment facility, awarding the work to the lowest responsible bidder, Benson Contracting.
Staff said the project bid allowed for two alternatives—full replacement or rehabilitation of two tanks—but only one contractor returned a rehabilitation price (about $1.7 million), so replacement at roughly $1.2 million was more cost-effective. Russell Darius told the council the city had been awarded a $1 million grant to help fund the work.
The council heard background that the existing tanks date from about 1970 and are beyond their useful life. Russell said one tank is already out of service and would be prioritized; the next tank would be selected based on the internal condition and age of the filter media. He also said the new tanks will be iron (with internal protective coatings) and that stainless cladding would be substantially more expensive.
When asked about the consultant’s estimate, staff said the consultant H2M produced a cost estimate in the same general range as the winning bid, which staff considered a sign the competitive price was reasonable.
Council members voted to adopt the resolution: Bridal — yes; Lester — yes; Reinhart — yes; Vice President Villamueva/Miyamura — yes; President Finn — yes.
