This audit is a follow-up to ANAO Audit Report No.31 1995-96 Environmental Management of Commonwealth Land: Site Contamination and Pollution Prevention (‘the original audit'). The objectives of the follow-up audit were to determine: the extent to which Defence has implemented the agreed recommendations contained in the original audit (relating to its environmental management and the management of unexploded ordnance (UXO) on non-Commonwealth land) and; the effectiveness of the implemented recommendations in improving the environmental management of Commonwealth land.