Supporting Technical Assessments

GHD | Oceana Gold (New Zealand) Ltd | 12552081 | Waihi North v Figure I.12 Drawdown curves for the TSF3 undercut dewatering 99 Figure I.13 Sensitivity testing outputs for changes to tailings K (Sens.2 and Sens.3) 105 Figure I.14 Sensitivity testing outputs for changes to tailings K (Sens.2 and Sens.3) 105 Figure I.15 Sensitivity testing outputs for changes to rhyolite tuff K (Sens.4 and Sens.5) 106 Figure J.1 Comparison of changes to input parameters for WRS SEEP/W model 112 Appendices Appendix A Site investigation methodology Appendix B Borehole data Appendix C Groundwater level data Appendix D Permeability analyses Appendix E Water quality Appendix F Surface water flow data Appendix G Gladstone Open Pit and Tailings Storage Facility technical assessment Appendix H Northern Rock Stack Technical Assessment Appendix I TSF3 Technical assessment Appendix J Wharekirauponga Willows Rock Stack Technical assessment Appendix K Water resource users

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