In 2014, the NSW Land and Environment Court imposed penalties on Orica Australia for a number of polluting incidents that occurred in 2010–11 at their Kooragang and Botany facilities. The monetary penalty was directed to fund projects aimed at restoring and enhancing the environment for the benefit of affected neighbouring communities. Part of the environmental service order was issued to the former Office of Environment and Heritage to fund the Lower Hunter River Health Monitoring Program, which included this stormwater quality monitoring program.
The monitoring program identified hotspots for dissolved ammonia, nitrates/nitrites and phosphates and dissolved metal pollution in the estuary and confirmed that industrial sites were a major source.
- Lower Hunter River Health Monitoring Program: Project Summary Report
- Lower Hunter River Health Monitoring Program: Legacies of a century of industrial pollution and its impact on the current condition of the lower Hunter River estuary
- Lower Hunter River Health Monitoring Program: Water Quality Monitoring Program 2014–2015 report
- Preliminary Ecological Assessment of the Lower-to-Mid-Hunter River Estuary 2015–16
- Health of the Hunter: Hunter River estuary report card 2016.