NorthConnex Opens

We are delighted to have played a role in one of Sydney’s biggest infrastructure projects – NorthConnex.

The 9km tunnel connects the M1 Pacific Motorway to the M2 Hills Motorway. The tunnel bypasses the congested Pennant Hills Road and 21 sets of traffic lights.

Enviropacific was engaged to deliver multiple tunnel de-watering water treatment plants. Our plants keep the tunnels dry, facilitating ongoing construction.

Our teams designed, constructed and operated the initial 4 x 10L/s groundwater water treatment plants in 2016, operating for 2.5 years.

We subsequently designed and constructed a 32L/s water treatment plant to replace the initial 4 systems. This treatment system included a combination of primary and tertiary treatments, combined with reverse osmosis. 

The tunnel is now officially opened to traffic.