WestConnex Strathfield monitor breaches PM 10 and PM 2.5 national limits in 2018
By Wendy Bacon,
The only WestConnex M4 East or NSW Office of Environment and Heritage ( OEH) Sydney monitor to breach national annual average limits for two measures of particulate matter in 2018 was Powell's Creek in Strathfield near the junction of the M4 and Parramatta Road.
PM 10 and PM 2.5 are two sizes of particulates commonly measured in air pollution. PM 10 is the focus of this report. PM 10 refers to particulate matter with an aerodynamic diameter between 10 and 2.5 micrometers. PM 10 and 2.5 are measured in micrograms per cubic metre of air, which is abbreviated as µg/m3.
Short and Long term exposure to PM 10 is associated with asthma, lung disease and other respiratory illnesses.
For more about the OEH and WestConnex monitors read this PM 2.5 report.
Powell Creek monitor at the junction of Parramatta Rd and the M4 recorded PM 10 25.8 u/gm3 and PM 2.5 10 µg/m3. (The national limits are PM 10 25u/gm3 and PM 2.5 8 µg/m3.)
As the chart below shows, Liverpool, which often records the highest PM 10 levels in Sydney was just below the limit. Three of the six WestConnex monitors are in the top four sites for PM 10 in 2018. They are well above NSW's future goal of 20 µg/m3, which has already been adopted by Victoria.