South-west Forest v Dept of Conservation

South-west Forest Defence Pty Ltd (SWFD) and the Department of Conservation and Land Management (CALM) were parties to proceedings in the High Court of Australia concerning the validity of certain decisions made by CALM under the *Conservation and Land Management Act 1984* (WA). SWFD sought to challenge CALM's approval of logging operations in the South-west Forests of Western Australia, alleging that these decisions were unlawful.

The central legal issue before the High Court was whether CALM had properly considered and given effect to the requirements of the *Environmental Protection Act 1986* (WA) and the *Conservation and Land Management Act 1984* (WA) when authorising the logging activities. Specifically, the court had to determine if CALM's decisions were vitiated by a failure to take into account relevant considerations or by taking into account irrelevant considerations, thereby rendering them legally invalid.

The High Court, in its joint judgment, found that CALM had failed to properly discharge its statutory obligations. The court reasoned that the *Conservation and Land Management Act* required CALM to manage forest lands in a manner consistent with the principles of ecologically sustainable forest management, which included a duty to consider the environmental impact of its decisions. The court held that CALM had not adequately considered the long-term ecological consequences of the proposed logging, particularly in relation to biodiversity and forest regeneration, and had therefore acted unlawfully. The court allowed the appeal, quashing the decisions of CALM.