Narrabri Underground Coal Mine Stage 3 Expansion. The Narrabri Underground coal project is located south-west of Narrabri. It is owned by Whitehaven Coal via a subsidiary (Narrabri Coal Operations Pty Ltd). The current underground mine was approved to extract 11Mtpa of coal until 2031, but Whitehaven is now seeking an expansion which will allow it to continue until 2044. This mine expansion will have a severe impact on cultural heritage sites important to Gomeroi Traditional Owners, groundwater bores relied on by farmers, the mighty Pilliga forest and the plants and animals which occur there, as well as the social fabric of the surrounding region.
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The expansion was approved by the NSW Planning Commission in April 2022 but that approval is now being challenged by Bushfire Survivors for Climate Action in the Land and Environment Court of NSW. The challenge has been lodged on the grounds that the approval was unreasonable due to the contribution that the expansion will make to climate change. Under Federal laws, the project has not yet been approved by the Federal Environment Minister. However, the Narrabri expansion is one of a number of coal mines for which a reconsideration request has been submitted by the Environment Council of Central Queensland under national environment laws. They argue that the indirect impact of the project on national environmental values, like World Heritage areas, due to the negative effects of climate change on them has not been properly considered. Federal laws have so far only considered direct impacts of the project on the local environment, not the impacts nationally from climate change.
Draining water, cracking stream-beds
The mine will cause at least 17 bores, and probably a lot more, to lose water. These water bores are relied on by farmers in the region who do not have access to surface water and are totally reliant on bore water. Local landholders say many more bores will be ruined by the project, and this will render their land worthless. There is a risk that the deep underground mining will lead to the cracking of the Pilliga Sandstone aquifer – which forms part of the recharge area of the Great Artesian Basin. The subsidence and groundwater drawdown is predicted to lead to subsidence and potential cracking of watercourses like Kurrajong Ck and Tulla Mullen Ck, as well as the potential loss of groundwater dependent ecosystems. It is predicted that after mining, it will cause a reduction in base flow to the Namoi River of at least 200 million litres each year. The mine also plans to re-inject toxic brine waste back into the goaf (the space left behind after longwall mining), which poses a major risk of contamination in the future.