12 April 2022

Monitoring and reporting

We are monitoring air quality to help us understand current local conditions. This will help us to measure any changes to local air quality once the West Gate Tunnel Project opens.

When the project opens, we will continue monitoring air quality for up to 5 years. We will also do in-tunnel air quality monitoring to confirm that the ventilation system is operating as it should.

We monitor air quality at 6 stations in Melbourne’s inner west, shown in the map below. Data available includes PM10 and PM2.5 at all stations, with additional parameters measured at the Primula Avenue station in Brooklyn.The station on Millers Road, Brooklyn, was established in October 2018 in consultation with the Victorian Environment Protection Authority (EPA).

Air quality near the West Gate Tunnel Project area is influenced by a number of factors including weather conditions and emissions from local industry, vehicles and domestic fuel burning.

EPA monitors air quality of the broader region through a monitoring network including stations at Footscray and Brooklyn. These stations are separate from the West Gate Tunnel Project’s monitoring network.

Visit the EPA Airwatch webpage to find results from EPA’s Footscray and Brooklyn stations, as well as information about how Melbourne’s air quality complies with State Environment Protection Policy (SEPP – Ambient Air Quality).

Please note: The November 2018 report has been updated to correct some minor factual inconsistencies. There are no changes to the results or any exceedance or discussion comments.

Please note: from 9 – 22 August 2018, our air quality monitoring stations were changed over and did not record data. To see data from this period, you can view historical data recorded at nearby EPA stations.

The June report was tabled at the Environment Effects Statement panel hearings in August 2017.

Find out more

See the West Gate Tunnel Project’s Environmental Performance Requirements.