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Utilities director updates council on $33.6 million wastewater plant overhaul; anaerobic basin pours begin
Summary
Utilities Director David Breeze reported on the wastewater treatment plant rehabilitation: total project authorization $33,622,998, $4.5 million expended to date; work underway includes an anaerobic basin with concrete pours beginning the next morning, UV disinfection replacement, aerator and pump upgrades, and a new 750 kW generator.
Utilities Director David Breeze provided a detailed construction update on the city’s wastewater treatment plant rehabilitation project, reporting a total project authorization of $33,622,998 and roughly $4.5 million spent so far on design and construction.
Breeze said crews excavated the anaerobic basin and planned four concrete pours to complete the floor, with the first scheduled for the next morning. The basin will allow biological phosphorus removal to meet upcoming regulatory requirements. The project also replaces the ultraviolet (UV) disinfection system, upgrades oxidation ditch aerators (with new units expected in the fourth quarter), converts influent screw pumps to submersible pumps with variable frequency drives, and installs a 750 kW backup generator sized to operate the full plant.
Breeze described the project sequencing designed to maintain full plant operations while equipment is swapped: install new aerators and move flow between ditches to avoid winter recovery issues, salvage serviceable aerator paddles for spare parts, and stage startup to manage generator inrush. He also discussed using an existing headworks structure for flow metering and avoiding deeper excavation costs by selecting submersible pumps.
No formal action was required; the briefing updated council on schedule, costs, and operational sequencing for the multi‑year project.
