Monitoring water quality and levels
All existing research and experience in producing CSG over the past 10 years, along with computer modelling, shows that CSG production is likely to have negligible impacts on the most commonly used water supply aquifers.
Read more about GISERA’s research findings on CSG and groundwater
Our modelling has been subject to comprehensive reviews by both state and federal regulatory agencies. Decisions about groundwater management will be guided by modelling, but any action taken will be based on monitoring results. Together with other participants in the CSG industry, we work with the Federal Office of Groundwater Impact Assessment in the development of an independent cumulative regional groundwater model. Their first Underground Water Impact Report (UWIR) was released in December 2012 with the second due in 2016.
Read the 2012 report
We undertake extensive groundwater monitoring throughout the entire duration of our operations, monitoring water levels and quality in the most commonly used aquifers as well as geological layers not generally accessed for groundwater. We monitor for pressure and water quality changes in the geological layers above and below the coal seams. This early detection monitoring is designed to provide Australia Pacific LNG with sufficient time to implement appropriate mitigation strategies.
The monitoring program is undertaken at both local and regional scales. Local programs focus on the existing operational gas fields at Talinga and Reedy Creek to gather data and improve the understanding of potential risk and adapt monitoring if necessary. Regional monitoring extends across the full extent of Australia Pacific LNG/Origin CSG tenements, and is undertaken in partnership with the other CSG tenure holders across their leases to provide comprehensive and seamless coverage.
Make Good Agreements
If CSG-related impacts on groundwater are predicted or detected, we will mitigate these impacts and ‘make good’ as required by the Water Act 2000 (Qld). This means that ‘make good’ requirements must be assessed and negotiated with potentially impacted landholders.
Actions could include increasing the depth of landholder bores, sinking new bores for the impacted landholder, lowering, modifying or replacing pumping equipment or supplying treated CSG water to supplement landholder supplies. Decisions on the appropriate course of action will be made on a case-by-case basis.