Oakey Coal Action Alliance Inc and New Acland Coal Pty Ltd

The High Court of Australia considered a dispute between the Oakey Coal Action Alliance Inc (the Alliance) and New Acland Coal Pty Ltd (New Acland) concerning the approval of a new coal mine. The Alliance sought to challenge the validity of the environmental authority granted to New Acland for its proposed Stage 3 expansion of the New Acland coal mine in Queensland.

The central legal issue before the High Court was whether the Minister for Environment and Heritage Protection (the Minister) had failed to consider relevant matters when granting the environmental authority. Specifically, the Alliance argued that the Minister had a duty to consider the potential impacts of the mine on groundwater resources, which were a crucial concern for the local community and agricultural land.

The High Court determined that the Minister's decision-making process was flawed because it did not adequately take into account the potential impacts on groundwater. The Court found that the *Environmental Protection Act 1994* (Qld) imposed a positive obligation on the Minister to consider all relevant matters, including the potential for significant environmental harm. The Court reasoned that the Minister's reliance on a report that did not fully address the groundwater impacts meant that the decision was made without proper consideration of a critical environmental factor, rendering the approval invalid.

Consequently, the High Court allowed the appeal, quashed the environmental authority granted to New Acland, and remitted the matter back to the primary judge for further orders.