Supporting Technical Assessments

For the correlated dam breach assessment, please refer to the following report: Engineering Geology Ltd (2022), 'OceanaGold (NZ) Ltd, Storage 3, Tailings Storage Facility, RL155, Dam Breach and Potential Impact Classification Assessment', Ref. 9216, dated June 2022. Source 1 Source 2 Source 3 Source 4 Source 5 Source 6 Source 7 Source 8 Source 9 Source 10 Source 11 Source 12 Source 13 Source 14 Source 15 Source 16 Downstream items of interest 2500 m Figure A1 OCEANA GOLD (NZ) LTD - WAIHI Storage 3 Tailings Storage Facility, RL155, Dam Breach Base Flood Inundation Areas 1 in 1,000 AEP - Overview N

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