Air quality in the Upper Hunter has changed over the past five years, but these changes are generally consistent with changes observed across the rest of New South Wales.
This is according to the recently released Air Quality Report conducted by independent consultants led by Damon Roddis at Zephyr Consulting at the request of The Upper Hunter Mining Dialogue.
The Update analyses and reports on key aspects of air quality across the Upper Hunter region, including concentrations of particulate matter (PM2.5 and PM10) for the 2023 calendar year, as well as examining the relationship between particulate matter and other factors such as rainfall and raw coal production.
This analysis was in response to concerns from stakeholders about air quality in the Upper Hunter.
Through this analysis and reporting, the Dialogue aims to better inform stakeholders
about air quality in the region, by providing fact-based information.
This yearly update follows on from the initial report delivered by ERM Australia-Pacific Pty Ltd, which was peer reviewed by a senior principal research scientist at the CSIRO .
Each year, the Dialogue analyses publicly available data from 14 NSW Government Air
Quality Monitoring Stations, including Singleton, Muswellbrook, Warkworth and Wybong. The analysis examines changes in concentrations of PM10 (coarse inhalable particles) and PM2.5 (fine inhalable particles), along with the correlation between rainfall and particulate matter, and the relationship between raw coal production and PM10.
This data is compared to data from all other NSW Government monitoring regions across NSW.
Key findings in the 2023 update include:
1. PM10 concentrations within the Upper Hunter are generally consistent with changes experienced across the rest of NSW.
2. Changes in PM2.5 are generally consistent with those observed elsewhere in NSW.
3. There is a correlation between rainfall and particulate matter concentrations across the Upper Hunter Air Quality Monitoring Network.
4. Changes in Upper Hunter PM10 concentrations are associated with regional conditions and are indicative of a minimal change in the contribution from local emission sources inclusive of mining.
5. The relationship between raw coal production and PM10 continues to be investigated and closely watched, though the report noted that recent fluctuations in PM10 concentrations were anticipated to be related to ambient temperatures and the amount of rainfall the region has received between 2019 and 2022, rather than a reduction in coal production.
The full report and infographics can be found on the Upper Hunter Mining Dialogue website.
