The objective of the audit was to determine whether the Commonwealth's interests were adequately protected in terms of both the contractor selection process that led to Australian Construction Services being awarded the contract for the overall management of the project and the actual commercial arrangements between the Department of Primary Industries and Energy and ACS. As part of the audit, criteria were developed which considered whether the Commonwealth procurement guidelines were adhered to, as well as whether the commercial arrangements clearly detailed the goods and services to be provided, their cost and timing of delivery.

The purpose of the audit was to examine the environmental management mechanisms in place across some of the major Commonwealth land management and oversighting entities. In particular, the audit examined Commonwealth environmental management practices to identify current strengths and weaknesses, and provide a framework and direction for the adoption of better practice and continuous improvement. The audit has not been designed to judge past Commonwealth performance using current environmental standards and practices. Rather, the audit focused on encouraging the development of better practice by illustrating the implications and lessons learned from past and present practices.