4nature Incorporated v Centennial Springvale Pty Ltd

4nature Incorporated (appellant) challenged the validity of a State significant development consent granted to Centennial Springvale Pty Ltd (respondent) for the proposed extension of the Springvale coal mine. The core of the dispute concerned whether the consent authority had correctly applied the requirements of clause 10(1) of the State Environmental Planning Policy (Sydney Drinking Water Catchment) 2011 (NSW), which mandated that the development must have a "neutral or beneficial effect" on water quality. The matter was heard in the Court of Appeal of New South Wales.

The primary legal issue before the Court of Appeal was to determine the proper interpretation of the phrase "neutral or beneficial effect" as it applied to the proposed development's impact on water quality. This involved considering the nature of the comparison required by the clause and whether the consent authority's assessment and satisfaction of this requirement were legally valid. The Court also considered principles of statutory interpretation in relation to delegated legislation.

The Court of Appeal found that the consent authority had erred in its interpretation and application of clause 10(1). It held that the clause required a comparison between the water quality that would result from the development and the water quality that would exist in the absence of the development. The Court rejected the interpretation that the clause merely required the development to not worsen existing water quality. Applying this interpretation, the Court concluded that the consent authority had not been satisfied that the development would have a neutral or beneficial effect on water quality.

Consequently, the Court of Appeal allowed the appeal, set aside the order of the Land and Environment Court that had dismissed the appellant's summons, and ordered the respondent to pay the appellant's costs in the Court of Appeal.