Supporting Technical Assessments

0 500,000 1,000,000 1,500,000 2,000,000 2,500,000 140 145 150 155 160 Storage Volume (m3) Elevation RL (m) Sunny Day Rainy Day Oceana Gold (New Zealand) Ltd - WAIHI Storage 3 Tailings Storage Facility, RL155, Dam Breach Elevation - Storage Curves Ref. No: 9216 Date: Jun 2022 Drawn: MC/YW Engineering Geology Ltd Unit 7C, 331 Rosedale Rd, PO Box 301054, Albany Figure 3 Rainy Day Breach Volume = 1,976,000 m3 Sunny Day Breach Volume = 480,000 m3

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