Project Proponent Department of Defence Proposal description The Department of Defence proposes to develop additional naval facilities on Garden Island, comprising Stage 2 and Stage 3 of the long term development program for HMAS Stirling. Region Perth Referred under EP Act s38 Industry sector Infrastructure Last updated September 29, 1989 4. EPA Report on assessment EPA Report Number 399 EPA Report EPA Report 399 (PDF, 2.84 MB) Date published Friday, September 29, 1989 - 12:00