The extraction of underground water by petroleum tenure holders (including coal seam gas (CSG) operators) can result in a lowering of water levels in adjacent aquifers. This may impact upon water bores and natural springs in the surrounding area. The level of impact will vary depending on the:
- aquifer that each water bore is tapping
- degree of interconnection between the aquifers, the target petroleum and gas formation and springs
- distance from the petroleum and gas field
- time since the start of petroleum and gas extraction.
Petroleum and gas operators have the right to take associated water under the Petroleum and Gas (Production and Safety) Act 2004 as a necessary activity in the process of extracting petroleum and gas. This is because water is a by-product and is not used directly in the gas extraction process.
With their rights, petroleum and gas producers have an obligation to comply with the underground water management framework under the Water Act 2000 (Water Act).
A Quick Guide — Make Good Obligations has been prepared to explain how impacts on landholder bores are identified and addressed. It also contains information about make good measures and the process for resolving complaints and disputes.
Underground water management framework
The Water Act underground water management framework:
- requires petroleum tenure holders to undertake baseline assessments of water bores
- requires the preparation of baseline assessment plans (BAP)
- requires the preparation of underground water impact reports (UWIR)
- provides for the declaration of cumulative management areas (CMA)
- establishes make good obligations for tenure holders—including the requirement for bore assessments establishes the Office of Groundwater Impact Assessment (OGIA) to oversee the groundwater impacts of the petroleum and gas industry.
A baseline assessment is an assessment of a water bore undertaken by a petroleum tenure holder (including CSG operators) to obtain information about the bore, including:
- the level and quality of water in the bore
- historical water use
- how the bore is constructed
- the type of infrastructure used to pump water from the bore.
Baseline assessments of water bores are required in areas where petroleum and gas production testing or production has started. They help with any potential ‘make good’ agreements and are a key step in managing the underground water impacts of petroleum and gas operators.
The Baseline assessment guideline provides both petroleum and gas operators and bore owners with more information.
Baseline assessment plans
A baseline assessment plan (BAP) is prepared by petroleum tenure holders (including CSG operators) to plan the undertaking of baseline assessments. A BAP must be submitted before production testing or production first starts. A BAP must include a baseline assessment timetable which outlines dates for completing all baseline assessments.
Read more about baseline assessment plans.
Underground Water Impact Report
An Underground Water Impact Report (UWIR) is prepared to model, make predictions and manage the impacts of extraction of underground water by petroleum tenure holders (including CSG operators).
An UWIR establishes responsibilities for petroleum tenure holders and ensures measures and programs are in place to respond to impacts on underground water.
The key elements of an UWIR are:
- a comprehensive water monitoring strategy
- projections of potential future water level impacts
- a spring impact management strategy
Before submitting an UWIR to the department for assessment and approval, public consultation must be undertaken on the draft UWIR. This involves publishing a notice about the proposed UWIR, and giving a copy to each bore owner to which the UWIR relates.
The Underground Water Impact Reports and Final Reports provides both petroleum and gas operators and bore owners with more information.
Read more about underground water impact reports.
You can view the UWIRs which have been approved by the chief executive under section 385 of the Water Act.
Cumulative management areas (CMAs)
A cumulative management area (CMA) may be declared in an area that is likely to experience an impact on underground water, due to the exercise of underground water rights by 2 or more petroleum holders.
Declaring a CMA enables the assessment of future impacts using a regional modelling approach and the development of management responses that are relevant to the potential cumulative impacts.
Under Chapter 3 of the Water Act the chief executive declared a cumulative management area (CMA) for the Surat and Southern Bowen Basin areas, including the alluvium of the Condamine River, in March 2011.
Read more about cumulative management areas.
A bore assessment is undertaken by a petroleum tenure holder to establish whether the bore is, or is likely to be, impacted (impaired capacity) by the extraction of underground water associated with petroleum and gas operations.
Bore assessments can be required by the chief executive or through an UWIR.
Read more about bore assessments.
The bore assessment guideline provides responsible tenure holders and landholders details about the minimum requirements for undertaking bore assessments. Responsible tenure holders must comply with this guideline.
Make good agreements
A make good agreement is an arrangement between a petroleum tenure holder and water bore owner.
If it is determined through the bore assessment that a bore has, or is likely to have, an ‘impaired capacity’ the make good agreement must provide details on the make good measures to be undertaken by the petroleum tenure holder to ‘make good’ the impact.
If there is a disagreement about a make good agreement, either party may seek a conference or independent alternative dispute resolution (ADR) to negotiate a resolution of the dispute. To seek a conference or ADR, the requesting party must complete an election notice and provide a copy to the CSG Compliance Unit and the other party.
Read more about make good agreements.
The Quick Guide — Make Good Obligations explains the purpose of a bore assessments and a make good agreement. It also contains information about make good measures and the process for resolving complaints and disputes.
The Frequently Asked Questions – Make Good Obligations also includes information about bore assessments and make good agreements.
Office of Groundwater Impact Assessment
The Office of Groundwater Impact Assessment (OGIA) is an independent entity responsible for managing groundwater impacts in CMAs.
When a CMA has been declared, the OGIA becomes responsible for preparing an UWIR for the CMA. The UWIR for the CMA will assign responsibilities to relevant petroleum and gas operators.
For more information about the OGIA, refer to the OGIA website.
The obligation to prepare a UWIR for the CMA was previously the responsibility of the Queensland Water Commission (QWC). As a result of governmental changes, the groundwater management functions of the QWC have now become functions of the OGIA.
On 18 July 2012, the QWC submitted its UWIR for the Surat CMA to the department. The UWIR for Surat CMA was approved with conditions on 12 October 2012.
Read more about the approved Surat UWIR.
For information about bores, water levels and water quality, please contact the CSG–LNG hotline on 13 25 23.