Former Point Cook Fire Training Area Contamination Remediation Works Project

1. Former Point Cook Fire Training Area Contamination Remediation Works Project Community Information Session 26 September 2013

2. Welcome & Format Objective • Provide an overview & update of the contamination remediation works that have commenced at the former Fire Training Area (FTA) at RAAF Base Williams, Point Cook. • Format of the Evening • 30 Minute presentation • Q & A session • Light refreshments • Former Point Cook Fire Training Area Contamination Remediation Works Project

3. RAAF Base Williams, Point Cook Former Point Cook Fire Training Area Contamination Remediation Works Project Former Fire Training Area

4. Site Location and Overview Former Point Cook Fire Training Area Contamination Remediation Works Project

5. Historical Practices – Fire Training Pits Former Point Cook Fire Training Area Contamination Remediation Works Project

6. Contamination Former Point Cook Fire Training Area Contamination Remediation Works Project

7. FTA Site Plan Former Point Cook Fire Training Area Contamination Remediation Works Project

8. Chemical Oxidation & Air Delivery System Trials Former Point Cook Fire Training Area Contamination Remediation Works Project

9. Cut-Off Wall & Erosion Control Former Point Cook Fire Training Area Contamination Remediation Works Project

10. Potential for Impacts from Contamination Human Health There is no unacceptable level of risk to users of the beach or park. Risks associated with the site itself are being managed by controlling access to the site Ecological No effects to the sensitive species present adjacent to the site could be identified as attributable to the former FTA. Former Point Cook Fire Training Area Contamination Remediation Works Project

11. Remediation Objectives The objectives of the FTA Site Remediation is to: Prevent the further migration of contamination offsite at concentrations that could adversely impact upon human health or the environment. Enable Defence to use the FTA Site for dry surface training with overnight camping; and Mitigate Defences risk and long term liabilities associated with contamination of soil and groundwater at the FTA Site. Former Point Cook Fire Training Area Contamination Remediation Works Project

12. Remediation Approach Excavate contaminated soil and DNAPL at Source Zones A and B; Treat groundwater extracted during the de-watering process; Treat contaminated soil and DNAPL using Thermal Desorption technology; Test and validate treated soil; Re-use the treated clean soil as backfill; Revegetate the site post completion of the remediation works; Continue to monitor the groundwater to confirm the success of the works; Consider groundwater remediation approach based on work outcomes. Former Point Cook Fire Training Area Contamination Remediation Works Project

13. Ex Situ Thermal Desorption How? Direct heating of the contaminated soil. Destroys contaminants of concern (CoC) in a controlled process that does not discharge CoC to the environment. Why? Greater certainty in DNAPL removal Proven track record on large scale projects in Australia Post-treated soil suitable for use a backfill material On-site treatment Former Point Cook Fire Training Area Contamination Remediation Works Project

14. Thermal Desorption Plant Former Point Cook Fire Training Area Contamination Remediation Works Project

15. Remediation Site Layout Former Point Cook Fire Training Area Contamination Remediation Works Project

16. Potential Impacts from Remediation Likely to be low Air Quality (dust, odour & volatile emissions) Potential process and engineering controls Traffic Works undertaken onsite i.e. little to no traffic impacts post site establishment. Noise Plant intended to operate 24hrs a day 7 days a week. Noise Management Plan Former Point Cook Fire Training Area Contamination Remediation Works Project

17. Management of the Works Complies with Commonwealth legislation and the intent of State environmental and OH&S legislation. Works undertaken in accordance with Defence Environmental Management Systems (EMS). Independent Environmental Auditor engaged by Defence. Former Point Cook Fire Training Area Contamination Remediation Works Project

18. Remediation Works Program July / October: Site Establishment including construction of Thermal Desorption Plant and associated infrastructure. November / December: Proof of Performance Testing to ensure plant will be effective at remediating contamination and complies with regulatory requirements. January onwards: Full scale treatment and remediation activities. Former Point Cook Fire Training Area Contamination Remediation Works Project

19. Recent Works Former Point Cook Fire Training Area Contamination Remediation Works Project

20. Impacts to the Base and Surrounding Area Former Point Cook Fire Training Area Contamination Remediation Works Project

21. Community Consultation Opportunities Website: www.defence.gov.au/id/pointcook/ 1800 number: 1800 024 072 Further public meetings: Approximately every 6 months or as required. Former Point Cook Fire Training Area Contamination Remediation Works Project

22. Questions Defence recognises its responsibility to remediate contaminated sites resulting from its activities. We are committed to ensuring the ongoing protection of human health and the environment, wherever we operate. Former Point Cook Fire Training Area Contamination Remediation Works Project