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The upgrade of the Picton harbour sewerage pipeline will begin this month now that a contract has been let to Hawkins Infrastructure for the first part of what will be an $8M Sewerage Upgrade project to bring a cleaner, healthier, more efficient sewerage system to the town.
The tender price of $3.8M for the first stage has come in within budget, says Council Assets and Services Manager Mark Wheeler.
The Stage One work will include a new marine outfall pipeline into Picton Harbour replacing the unsightly and deteriorating pipeline that currently runs around the inner harbour from Carey's Boatyard to Kaipupu Point.
The old pipeline will be demolished and completely removed as part of this work. There’ll also be a new pipeline built along Dublin Street and Lagoon Road, connecting the future new Dublin Street Pump Station to the marine outfall.
The existing effluent pipeline from the Picton Sewage Treatment Plant will be connected up to the new outfall. A new, small diameter pipeline will also be laid alongside the outfall pipeline along Dublin Street which will be able to carry recycled effluent from the treatment plant in the future.
The next stage will include the construction of the new pumping station and bypass treatment facility in Dublin Street and associated pipework.
By the end of the project, all the aging trunk pipelines (both gravity and pressure) from Waikawa Beach to Dublin Street will have been replaced and there will be new pump stations at Surrey Street, Fishermans Wharf and Dublin Street as well as pump station upgrades at Beach Road and Waikawa Beach.
A modern aeration and UV treatment plant serving Picton and Waikawa was built over a decade ago.