Supporting Technical Assessments

The Power of Commitment vi Figure 31 Predicted Minimum Tunnel Inflow (Low K) 49 Figure 32 Waihi WBM Outline 50 Figure 33 Modelled WRS Collection Pond to Waihi WTP 52 Figure 34 Modelled Median Total Flow to Waihi WTP (High K Tunnel Inflow) 52 Figure 35 Modelled Median Total Flow to Waihi WTP (Low K Tunnel Inflow) 53 Figure 36 Dewatering pump rates, based on a maximum pump capacity of 15,500 m3/day (High K Scenario) 55 Figure 37 Dewatering deficit from target, based on a maximum pump capacity of 15,500 m3/day (High K Scenario) 55 Figure 38 Predicted underground water elevation (High K Scenario) 56 Figure 39 Predicted underground water elevation (Low K Scenario) 57 Figure 40 Quarterly Water Treatment Summary (High K Scenario) 59 Figure 41 Quarterly Water Treatment Summary (Low K Scenario) 59 Figure 42 Monthly Water Treatment Summary (High K Scenario) 60 Figure 43 Tailings Production and TSF Allocation 60 Figure 44 WTP Mean Monthly Excess Flow (High K Scenario) 61 Figure 45 WTP Mean Monthly Excess Flow (Low K Scenario) 62 Figure 46 TSF1A Water and Tailings Elevations - High K (Left) and Low K (Right) Scenarios 63 Figure 47 TSF2 Water and Tailings Elevations - High K (Left) and Low K (Right) Scenarios 63 Figure 48 TSF3 Water and Tailings Elevations - High K (Left) and Low K (Right) Scenarios 64 Figure 49 Gladstone TSF Water and Tailings Elevations - High K (Left) and Low K (Right) Scenarios) 64 Figure 50 Predicted manganese concentrations at OH6 over 2027 68 Figure 51 Predicted zinc concentrations at OH6 over 2027 69 Figure 52 Predicted LOM iron concentrations at OH6 70 Figure 53 Predicted LOM WAD cyanide concentrations at OH6 70 Appendices Appendix A Mataura and Wharekirauponga Flow Gauging Reports Appendix B Wharekirauponga Surface Water Recommendations Appendix C Willows Infrastructure Layout Appendix D Background Water Quality Data Appendix E Site Water Balance Model Appendix F Water Balance Model Input Tables Appendix G Ohinemuri Flood Model

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