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Drilling down for answers

20 October, 2016

An exciting new project under Revitalising Geographe Waterways is gearing up this spring to investigate whether the sediment build up at the Vasse Surge Barrier can be removed.

The build-up of sediment at the Vasse Surge Barrier has long been a concern to the local community, and is thought to contribute to poor water quality over the summer months.

Revitalising Geographe Waterways project officer Kirrily Hastings said the investigation would first try to determine how much sediment is there, then look at its physical properties to assess options for removal.

“We will be taking a series of cores to help us determine the depth and volume of sediments at the surge barrier and along the channel extending back to Estuary View Drive” said Kirrily.

Following the surveys, samples collected from the sediment cores will undergo chemical analysis to determine any risks for disturbance, removal and disposal.

“It is important that we know exactly what is in the sediment, so we can assess if it is feasible to remove, and what precautions and treatment would be needed if removal was to go ahead” said Kirrily.

Sediment surveys are expected to start in spring, with a feasibility report to follow. If you are out and about in the area look out for our staff along the foreshore or in a dinghy taking samples.

This project is part of Revitalising Geographe Waterways, made possible by the State Government’s Royalties for Regions program.