Rehabilitation and Surrender
Resources companies are committed to rehabilitating land to a state where it can be passed on safely and sustainably for the next land use
During operations, resource developments bring significant benefits to regional communities and Queensland. However, these developments have a limited lifespan and provide one of many alternative land uses over time. As such, resource companies understand the importance of rehabilitation and returning the land to a state where it can be passed on safely and sustainably for the next land use.
The resources sector’s approach to rehabilitation has improved significantly over past decades in line with emerging techniques, evolving corporate values, community expectations and law. These advances in rehabilitation have resulted in a modern regulatory framework, which is supported by an ongoing commitment by the resources sector to refine and develop innovative methods for rehabilitation.
Rehabilitation is an important part of the resources sector’s environmental performance and is effectively considered as another component of operations. The sector does not consider rehabilitation as something that begins towards the end of the operation, but rather a process that begins in the planning phase and is progressively sequenced throughout the life of the operation.
The resources sector is advancing rehabilitation in Queensland and showcasing its commitment and exceptional stewardship in attaining on-ground results.
How is rehabilitation regulated?
Petroleum and gas
Individual site rehabilitation requirements are set through relevant environmental authority (EA) conditions established by Government under the Environmental Protection Act 1994 (EP Act).
The petroleum and gas sector also operates under a Plan of Operations for the purpose of establishing rehabilitation commitments. However, the Plan must be developed in accordance with the new requirements of the Preparing a plan of operations for an environmental authority relating to a petroleum lease guideline and Approved Form. QRC participated in the development of the guideline.
With the introduction of the Mineral and Energy Resources (Financial Provisioning) Act 2018 (MERFP Act) on 1 November 2019, which amends the EP Act, the State Government established a new life-of-mine planning (i.e. commencement through to surrender) instrument – a Progressive Rehabilitation and Closure Plan (PRCP). The Plan is to:
- Describe the intended post-mining land use or non-use management area;
- Outline rehabilitation techniques for achieving the post-mining land use or management measures for a non-use management area;
- Map where mining and rehabilitation activities are forecast to occur; and
- Set binding (enforceable), time-based milestones for actions that achieve progressive rehabilitation or management outcomes. Note that this is dependent on when land becomes available for rehabilitation.
Where possible, the Government and companies are seeking to maximise post-mining land uses for ongoing utilisation by the next landholder.
Post-mining land use and non-use management area
All rehabilitated mined land must be safe, stable and non-polluting and:
- Returned to a post-mining land use (e.g. grazing, native vegetation, industrial, forestry, renewables); or
- Managed as a non-use management area (e.g. void with low quality water).
It is important to note that a void can have a post-mining land use (e.g. stock water if quality is suitable, habitat, general use water storage and transfer).
A milestone is an activity (or step) necessary to rehabilitate the land or manage/minimise the risks to the environment. There are two types of milestones:
- Rehabilitation milestones for achieving the post-mining land use; and
- Management milestones for management of a non-use management area.
In either case, examples of milestones may include:
- Installation of cover system/cap;
- Reshaping/reprofiling to achieve stable final landform;
- Topsoil placement; or
- Revegetation (e.g. seeding).
Land ‘available for rehabilitation’
The first step in developing a PRCP schedule of milestones and associated timeframes is understanding when land is ‘available for rehabilitation’. As defined in the EP Act, land is available for rehabilitation unless:
- It is being mined (e.g. coal face activities, overburden emplacement areas, health and safety/geotechnical hazard exclusion areas);
- It is needed for operating infrastructure and machinery (e.g. coal preparation plant or metal refinery, tailings dams, workshops, storage facilities, dams for water storage, roads or other access, buildings, levies or watercourse diversions);
- It is needed for permanent infrastructure (which may include any previously operating infrastructure or machinery to be used or retained as an asset); or
- There is a reserve that is to be mined within 10 years. Note the Environmental Protection Regulation 2019 allows for exceptions to this rule under extraordinary circumstances where areas may still not be available upon and after 10 years.
Once land is available, companies must work towards delivering the milestone as soon as practicable and forecast when the milestone will be achieved.
For both mining and petroleum and gas activities, companies are required to demonstrate that rehabilitation is being achieved through routine monitoring and reporting to the State Government to maintain compliance and in recognition of retaining a social licence to operate. This is provided in an Annual Return. Where a PRCP for mining applies, the Annual Return must also include an evaluation of the effectiveness of the schedule of milestones.
Supporting legislation and material
QRC participated in the development of the MERFP Act, amendments to the Environmental Protection Regulation 2019, PRCP Guideline, and information sheets to support the legislative framework and drive implementation.
Companies will be transitioned into the PRCP framework with notices to prepare a plan to be issued by November 2022. Further details relating to the preparation of a PRCP is provided on the Business Queensland website.
Queensland has a system authorised under the EP Act which allows for Government, who must be confident that relevant conditions have been complied with and rehabilitation has been completed satisfactorily, to sign off (or certify) an area prior to surrender. Under these circumstances it is important to note that resource companies continue to remain responsible for the ongoing upkeep of certified areas until surrender.
Progressive certification provides the resources sector with regulatory certainty that rehabilitated areas will not be subject to future changes in requirements or expectations over time.
Seeking progressive certification is a voluntary assessment and approval process. There are some companies that have not yet sought, or have chosen not to seek, certification. In any case, it does not mean that they have not undertaken progressive rehabilitation or failed to achieve the relevant completion criteria.
For further clarity, progressively certified land is not the same as progressive rehabilitation, which includes all steps in the lead up to achieving the relevant completion criteria (e.g. landform establishment, cover placement, revegetation). The two must be clearly distinguished to avoid misrepresenting the efforts of the resources sector.
Since early 2016, QRC and the resources sector has taken a proactive approach, through the testing of real rehabilitation case studies, to assist the State Government in determining how to best utilise and consistently implement the certification framework.
On 2 June 2017, Glencore’s Newlands was the first open cut coal mine to receive certification for approximately 73 hectares of rehabilitation associated with part of an overburden emplacement area. This milestone provided a constructive way forward for both Government and the mining sector in encouraging further certification of progressive rehabilitation. Glencore’s success was also acknowledged by Government. To learn more about the rehabilitation at Newlands and other certification case studies click here.
Financial provisioning and Estimated Rehabilitation Cost
The Queensland Government requires proponents of all resource activities to provide financial security prior to the commencement of approved activities. This payment is a guarantee that the State holds adequate funding for rehabilitation of sites in the event that a person or company defaults on its obligations.
The payment is provided as part of the financial provisioning scheme (the Scheme) established under the MERFP Act.
Financial security (formerly Financial Assurance) under the Scheme is termed an Estimated Rehabilitation Cost (ERC). It is to be determined in accordance with a Government-developed calculator. Further information is available on the Business Queensland website.
A Scheme Manager assesses resource sites individually and their place in the Scheme having regard to:
- The financial risk (soundness) of a solely-owned company or an entity of a joint venture (or parent company); and
- Attributes of the site itself, including project strength (economic life based on reserves or off-take agreements), rehabilitation completed and compliance. These attributes inform the likelihood (or level of risk) of a site being considered attractive for sale to another party in the event its current owner enters into administration.
The risk categories include very low, low, moderate and high. The Scheme Manager decides, based on the risk profile, if financial security is to be paid via:
- Pooled fund (the Fund) with three tiers – company is very low, low or moderate risk; or
- Surety (e.g. bank guarantee or insurance) – company is high risk.
If a company is to pay into the Fund, the contribution is the ERC multiplied by the relevant percentage associated with one of three tiers based on risk (i.e. very low, low, moderate).
Surrender and residual risk
While activities undertaken by the resources sector generally continue for many years and in some cases decades, they are still temporary in nature. Upon approaching, and at the time of, closure the priority for the resources sector is to:
- Minimise credible residual environmental risks; and
- Provide a safe, stable and non-polluting rehabilitated landform that is generally available for future use.
EA holders can apply to surrender their authority following the completion of resource activities provided all
conditions and requirements, including rehabilitation, have been met. Once the application to surrender the EA is approved, the resource company is generally no longer responsible for the monitoring, maintenance and rectification of the site. However, following surrender, there may be ongoing requirements to monitor aspects of the site and manage engineered structures to ensure they continue to meet their design function. There may also be a need to rectify any subsequent failures of rehabilitation that may occur despite rehabilitation having met the relevant requirements upon surrender.
The Queensland Government needs to ensure that it has sufficient funds to manage, rehabilitate, restore and protect the environment should a residual risk occur. The EP Act provides the administering authority rights to secure such funds through a residual risk payment as part of a surrender application. Two pathways have been created to assist with the estimation of post-surrender costs for credible residual risks include:
- A calculation tool to be used in most circumstances; and
- An expert panel to be used where the tool is not appropriate.
The calculation tool and supporting guidance for implementation of residual risk framework is currently being finalised by the Queensland Government and is anticipated to be released in early 2022.
Care and maintenance
‘Care and maintenance’ is a term used in the mining sector to describe the status of a non-operational mine site where there is potential to recommence works at a later date. The decision to move a site into care and maintenance is a major decision for a mining company with all potential impacts carefully evaluated. One factor influencing this decision may be low commodity prices, which are often cyclical. Under these circumstances, a company may choose to manage the site until economic conditions are favourable to recommence operations.
There has been concern expressed by some external stakeholders that care and maintenance equates with premature closure of a mine, however, this is not the case. It is important to recognise that under Queensland’s regulatory framework, although periods of care and maintenance may last several years, the ongoing environmental liability for the site, including rehabilitation, remains with the company. It is not surrendered until Government requirements have been met. Care and maintenance should also not be confused with abandonment, which is safe-guarded by financial provisioning mechanisms.
In any case, care and maintenance is accounted for by new provisions under the MERFP Act, whereby the Scheme Manager is to be notified where there is six months of no production, and hence able to monitor any financial risk moving forward.
Abandoned mines are a legacy from historical operators before modern mining practices and environmental management and mine rehabilitation regulations were in place as they are today. The Queensland Government defines a site as an abandoned mine when a mining tenure no longer exists and there are no legal avenues requiring the company or individuals that created the mining disturbance to carry out remediation.
There has been a range of public communications from non-industry groups that 15,000 abandoned mines in Queensland. The then Department of Natural Resources, Mines and Energy’s (now the Department of Resources) Addressing the State’s Abandoned Mines Legacy Discussion Paper (the Discussion Paper) states that:
“…estimated reports of 15 000 abandoned mines can be misleading given the vast majority are very small and do not share characteristics common to a contemporary mine. A very high percentage of these sites were mined in the ‘gold rush’ of the late 1800s to early 1900s using relatively unsophisticated methods, such as hand tools, with small disturbances to the land. These historical sites were mined before the introduction of strict environmental regulations“.
According to the Department’s analysis presented in the Discussion Paper:
- 120 legacy mines. These sites ceased production prior to the EP Act amendments in 2000 and have features in common with a contemporary mine created by mechanised mining methods.
- Four sites terminated mines. These sites ceased production after the EP Act amendments without fulfilling rehabilitation obligations. That is, as part of liquidation, the mining leases were disclaimed and responsibility for managing the former mine sites and associated liabilities left by the operators has reverted to the State Government.
QRC fully supports the Department’s analysis and the supporting context.
The Abandoned Mine Lands Program, administered by the Department of Resources, progressively assesses abandoned mine sites and takes action to reduce significant environmental and public health and safety risks. While there are such initiatives underway aimed at addressing abandoned mines, QRC and its member companies are focused on undertaking operations responsibly and delivering on rehabilitation requirements in accordance with strict environmental conditions and regulations, including new requirements introduced under the MERFP Act. This focus is to ensure that no further abandoned mines are created in Queensland.
The Department is currently undertaking an exercise to prioritise funding and rehabilitation works for legacy and terminated mines. Such efforts will be supported through contributions generated via interest from the Fund once the Scheme is well established.
Collaboration on mine rehabilitation and closure
The Cooperative Research Centre for Transformations in Mining Economies (CRC-TiME) connects mining companies, technology and service suppliers, state and local governments, regional and community representative bodies and research institutions. It is an initiative that seeks to drive innovation around the key issues and barriers for mine closure and deliver resilient post mining outcomes.
QRC has partnered with CRC-TiME to bring about meaningful research that can be translated into practical on-ground action in relation to rehabilitation and mine closure. QRC sees it as an opportunity to build on existing initiatives, and encourage greater collaboration between the mining sector and other stakeholders.
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