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Major systems installed as Preston wastewater upgrade progresses

Preston City Council · September 8, 2025

Summary

Construction at the wastewater treatment plant is advancing: headworks aprons poured, oxidation ditches leak-tested, motors/gears/aerators installed, clarifier hardware in place, and site grading and drainage nearing completion, project staff reported.

Brian Moss reported detailed progress at Preston's wastewater treatment plant: concrete aprons and exterior pours are complete in places, interior painting and electrical finishing are underway, the equalization basin has been filled for leak-testing, oxidation ditches completed leak testing, and motors, gearboxes and aerators have been installed. Clarifier hardware including sweep arms, baffles and center wells is installed and stairs and catwalks are being mounted.

Moss said the solids-handling building demolition and pad work have progressed and site-wide drainage and yard lighting infrastructure are near completion. Council members asked about hillside grading and runoff control measures; Moss said rock fill and drainage channels will be used to prevent pooling and sliding and that the contractor has installed drain piping to manage flow around basins.

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