Environmental Impact Assessment

TNG Limited (TNG) commenced the process of seeking environmental approval for the Mount Peake Project in 2013, and this has now progressed.

Assessment Approach

The Mount Peake Project comprises a mine and processing facility at Mount Peake, approximately 235 km north-northwest of Alice Springs and 50 km northwest of Ti Tree, and the Darwin Process Plant at the Middle Arm Industrial Precinct, some 16 km to the southeast of Darwin.  Environmental approval for the mine and process plant is being progressed separately reflecting their geographical separation (1,400 km) and that the environmental and social issues that will need to be addressed are substantially different between the two locations.

The mine and refinery were separately referred to the Northern Territory Environment Protection Authority (NT EPA). The NT EPA determined that both required assessment under the Northern Territory Environmental Assessment Act 1982 (EA Act) at the level of Environmental Impact Statement (EIS).

The mine and process plant were also separately referred to the Commonwealth Department of the Environment under the Environment Protection and Biodiversity Conservation Act 1999.  Both were determined to be controlled actions with assessment by accredited assessment under the EA Act. 

Mine Site EIS

A draft EIS was prepared for the Mount Peake mine site and processing facility during 2015. Key components of the project include an open-cut pit, waste rock dump, ore processing plant, tailings storage facility, water dams, gas fired power station, accommodation village, site access roads, Stuart Highway underpass, rail loadout facility and borefield.

The draft EIS identifies and assesses the potential environmental and social impacts of the project and provides management and control measures to reduce potential risks or impacts to as low as reasonably practicable and to an acceptable level, in accordance with legislative requirements, industry standards and TNG’s environment, community, and health and safety policies. Potential impacts have been assessed for water resources (groundwater and surface water), biodiversity (flora, vegetation and fauna), air and greenhouse gasses, noise and vibration, Aboriginal and historic heritage, socio-economics, human health and safety, waste management and rehabilitation and closure.

The draft EIS for the Minesite, Transport Corridor and Borefield was submitted to the NT EPA in December 2015 and released for public comment from 13 February 2016 – 25 March 2016. The NT EPA received written submissions from a number of entities and these submissions along with EPA comments were addressed in a Supplement to the EIS submitted in April 2017.

Further review by the NT EPA advised TNG that additional information was required to address a small number of outstanding issues. An Addendum to the EIS and Supplement was prepared by Perth-based Animal Plant Mineral Pty Ltd and submitted in November 2017.

The NTEPA provided an approved Assessment Report in January 2018, which has been forwarded to the Commonwealth Department of Environment and Energy (DoEE) to complete the process.

The project is now ready for the Mining Approval. In order to complete this process, TNG will immediately commence work to finalise its Mine Management Plan (MMP), incorporating the recommendations made by theNTEPA, as outlined in their assessment report.

Digital versions of the Draft EIS, Supplement, Addendum and NTEPA assessment report can all be found on the NTEPA website at:


Mount Peake Project Receives Federal Environmental Approval

Mount Peake Project Receives Federal Environmental Approval (178 k)

Darwin Process Plant EIS

An EIS for the Darwin Process Plant is currently being prepared. Specialist studies are being undertaken to identify and assess potential environmental and social impacts and to identify management and mitigation measures where necessary.  As part of this work consultation will be undertaken with local communities and government agencies. 

Project Updates

TNG will provide regular additional information, via this web page, about the environmental impact assessment and consultation process at each of the key milestones.