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Laguna plant UV upgrade nearing later-than-expected finish; $55M spent to date
Summary
Santa Rosa Water on Tuesday briefed the City Council on an extensive upgrade to the Laguna Treatment Plant’s ultraviolet disinfection system, reporting about $55 million in construction spending and an expected completion that now extends past July 2025.
Santa Rosa Water on Tuesday briefed the City Council on progress at the Laguna Treatment Plant, where a major upgrade to the plant’s ultraviolet (UV) disinfection system has been under construction since 2022.
Deputy Director Mike Prins said the project has included deep excavation, sheet-piling, a 42-inch high-density polyethylene diversion pipeline and five UV treatment channels. To date, Prins said, the city has spent nearly $55 million on construction, including about $3.2 million in change orders, and that the contractor has logged roughly 75,000 labor hours.
Prins said the new facility will restore the plant’s full previous recycled-water treatment…
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