Tunnel plans scrutinised

Published:
06/10/2021

Locals and environmental experts have voiced concerns over plans to build a multi-billion-dollar motorway tunnel to the Northern Beaches.

Community groups, marine biologists, scientists, and local councils all stepped up in September to provide testimonial to a NSW parliamentary inquiry analysing the Beaches Link project.

Following extensive community campaigning, the inquiry was established by the Legislative Council’s Public Works Committee to examine the business case, costs, environmental impact, governance structure and consultation methods of the project.

Over three hearings held last month, residents and experts shared their concerns that the project could have ‘severe’ ramifications for local children, traffic congestion, and the natural environment.

Seaforth local Louise Williams fronted the inquiry as a member of community group Baringa Bush Residents. She says there is ‘significant concern’ among residents about the 3,000 trees to be lost to the project as well as the impacts on local school children.

“Seaforth and Balgowlah will be profoundly impacted. The main construction site is literally across the road from Balgowlah Boys, which is 1,300 kids. That could be their entire high school life with a big diesel truck every one minute or so moving past,” she explains.

“Then, they’ll also be a couple of hundred metres away from the emission stack, as will Seaforth Public.

“In the Environmental Impact Statement (EIS), it says that we will actually have a 10 per cent increase in traffic congestion around Frenchs Forest, which is near one entry, and a 16 per cent increase in Balgowlah, with the other entry.” 

The inquiry also heard from experts, including Maria Byrne from the Australian Marine Sciences Association, that plans to dredge Middle Harbour near Seaforth to install part of the tunnel could release ‘highly toxic chemicals’ into the water.

Other specialists also sounded the alarm that water flow in local streams and creeks will drop due to groundwater infiltration. They cited modelling included in the EIS that base water flows in Burnt Bridge Creek could reduce by up to 96 per cent.

Transport for NSW says additional modelling and analysis for the Beaches Link project has shown ‘minimal’ impacts on local groundwater, seawater, and creeks.

Author:
Stephanie Aikins, Editor-in-Chief, Peninsula Living Magazine

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