iii Figures Figure 1 Location of the Wharekirauponga Deposit ..................................................3 Figure 2 General Topography in the Wharekirauponga Catchment Area .................4 Figure 3 Wharekirauponga Surface Water Catchment Area......................................5 Figure 4 Geology of the Coromandel Region .............................................................6 Figure 5 Geology in the Wharekirauponga Area ........................................................7 Figure 6 Geologic Section of the Vein System............................................................8 Figure 7 Surface Mapped Hydrothermal Alteration Zones. .......................................9 Figure 8 Wharekirauponga Groundwater Catchment Outline.................................10 Figure 9 Typical Banded Rhyolite Host Rock in Core................................................13 Figure 10 Typical EG Main Vein in Core ..................................................................13 Figure 11 Typical T-Stream Main Vein in Core........................................................14 Figure 12 Typical Silicified Rhyolite.........................................................................14 Figure 13 Stockwork Vein Textures ........................................................................14 Figure 14 Massive Flow Banded Rhyolite ...............................................................15 Figure 15 Silicified Rhyolite.....................................................................................15 Figure 16 Stockwork in Clay Matrix ........................................................................16 Figure 17 Adit Showing Outer Regolith Drainage and Dry Inner Rock ...................16 Figure 18 WKP52 RQD and Fractures/m vs Depth .................................................17 Figure 19 Piezometer Locations..............................................................................19 Figure 20 WKP03D Groundwater Pressures and Rainfall over Time......................19 Figure 21 WKP01 Permeability Testing...................................................................20 Figure 22 WKP02 Permeability Testing...................................................................20 Figure 23 Indicative Groundwater Inflow Locations...............................................23 Figure 24 Surface Water Flows vs Radon Concentration .......................................25 Figure 25 Piper Diagram of Groundwater and surface Water Samples .................26 Figure 26 Catchment Scale Groundwater Flow ......................................................28 Figure 27 Conceptual Surface and Groundwater Interaction Model ....................30 Figure 28 EG Vein Groundwater Model Result Output ..........................................32 Figure 29 Extent of Near Surface Drawdown Effects .............................................33 Figure 30 Surface Exposure of Rhyolite Rocks........................................................34 Figure 31 Headwater Spring Discharge Locations and Flow Rates.........................37 Figure 32 T Stream Geological Section ...................................................................37 Figure 33 Diagram of Saturated and Unsaturated Groundwater Conditions. .......39 Figure 34 Schematic Showing the Groundwater System and Rooting Zone...........40 Appendices Appendix A Groundwater Modelling Appendix B Valenza Engineering Mitigation Measure Strategy and Baseline Data Acquisition
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