The Boddington Gold Mine was originally assessed by the EPA in 1985. The EPA has subsequently assessed additional project expansions for the mine. Rehabilitation of the mine site is a key element of the commitments and Worsley Alumina has undertaken ongoing studies to assist in the overall rehabilitation. These studies are continuing. Inherent in the original rehabilitation concept for the mine site was the return of waste stockpiles to the mine pits and the maintenance of water quality in Thirty-four Mile Brook. However, this new rehabilitation strategy is inconsistent with a number of Worsley Alumina's existing environmental management commitments. The EPA has assessed the new rehabilitation strategy and the need for commitments to be amended if the proposed new strategy is to be implemented.