1982: Yass River Polluted with 2,4,5-T

1982: In July 1982 it was disclosed that council workers had been using a mixture of diesel oil and 245T to spray stumps along the banks of the Yass River, and that an estimated two gallons had found its way into the river. The ecological impact of this herbicide was not great; tests carried out by the NSW Health Department indicated insignificant levels of pesticide in the water. Nevertheless, the resulting oil slick further offended the sensibilities of residents already uneasy about water quality; the Secretary of the Yass Acclimitisation Society expressed his concern to state government authorities (Yass Post 7 July 1982, P. 1).

1982: In July 1982 it was disclosed that council workers had been using a mixture of diesel oil and 245T to spray stumps along the banks of the Yass River, and that an estimated two gallons had found its way into the river. The ecological impact of this herbicide was not great; tests carried out by the NSW Health Department indicated insignificant levels of pesticide in the water. Nevertheless, the resulting oil slick further offended the sensibilities of residents already uneasy about water quality; the Secretary of the Yass Acclimitisation Society expressed his concern to state government authorities (Yass Post 7 July 1982, P. 1).

https://www.aic.gov.au/publications/previous%20series/lcj/1-20/wayward/ch15.html