Project Proponent Alcoa World Alumina Australia Proposal description The proposal is to upgrade the Pinjarra Alumina Refinery. The proposal involves an upgrading of the seed filtration facility to improve its efficiency in order to increase the alumina production by approximately 17% to approximately 4.2 million tonnes per annum. This will require an increase in the bauxite mining rate at Alcoa’s Huntly bauxite mine and additional bauxite grinding, slurry storage and calcination facilities. Assessment Number 1498 Region Peel Referred under EP Act s38 Industry sector Industrial Last updated September 21, 2015 Current Status Ministerial Statement published 1. Referral Referral documentation Environmental Protection Statement (PDF, 4.88 MB) Appendix A - Air dispersion modelling (PDF, 5.57 MB) Appendix - Air dispersion modelling - independent desktop review (PDF, 211.51 KB) Appendix B - Health Risk and Toxicological Assessment Report (PDF, 1.57 MB) Appendix B - Review of draft Health Risk and Toxicological Assessment Report (PDF, 75.86 KB) Appendix C - Noise Modelling Report (PDF, 442.85 KB) Appendix C - Noise Monitoring Report (PDF, 243.8 KB) Appendix C - Independent review of Acoustic consultancy work (PDF, 355.04 KB) Appendix E - Upgrade updates (PDF, 551.02 KB) 2. Decision on whether to assess this proposal Chair's Determination Environmental Protection Statement (EPS) Preliminary Environmental Factors Social Surroundings Date published Monday, 8 December, 2003 3. Assessment Environmental Review Environmental Review documentation Pinjarra Refinery Efficiency Upgrade EPS - Dec 2003.pdf (PDF, 4.88 MB) 4. EPA Report on assessment EPA Report Number 1122 EPA Report Pinjarra Refinery Efficiency Upgrade (PDF, 2.98 MB) Key Environmental Factors Social Surroundings Water Date published Wednesday, 10 December, 2003 Appeals close Wednesday, 24 December, 2003 5. Decision on proposal and implementation of proposal Ministerial Statement Date of approval Wednesday, 3 March, 2004 Ministerial Statement Ministerial Statement 646 (PDF, 1.96 MB) Post-assessment changes s. 45C amendments Attachment 1 to Statement 646 - Amendment of Key Proposal Characteristics: Atmospheric emissions from 640 tpa NOx to 780 tpa NOx - change to proposal approved under s45C on 1 July 2008. Attachment 2 to Statement 646 - Increase in production, bauxite residue generation, emissions of NOx, CO and greenhouse gases; update description of the proposal including the ‘Development Envelope’; correction of a unit error; and removal of elements that are not key proposal characteristics relevant to the environment, managed under other legislation, completed, or not relevant to the proposal - change to proposal approved under s45C on 21 September 2015. Date of approval s. 45C Tuesday, 1 July, 2008 Monday, 21 September, 2015
