Site-specific Assessments of Environmental Effects

B-1 - Area 1, Coromandel Forest Park – Assessment of Environmental Effects Figure 19: Plan View of Wharekirauponga Tunnel Design. 36 Figure 20: Long Section View of Wharekirauponga Tunnel Design 37 Figure 21: Indicative Dual Tunnel Cross Section. 39 Figure 22: Typical drilling platform construction with frog exclusions fencing visible. 42 Figure 23: Typical Drilling Setup (vertical drilling will be employed for shaft geotechnical investigation). 42 Figure 24: Typical Drilling Platform Layout 43 Figure 25: Typical Alimak and Mast Arrangement. 44 Figure 26: Typical Return Vent Stack. 45 Figure 27: Proposed amenities facility concept. 46 Figure 28: Modified Avoca mining method at commencement. 48 Figure 29: Diagram of Saturated and Unsaturated (Regolith Water) Groundwater Conditions. 73 Figure 30: Schematic Showing the Groundwater System Structure Relative to the Rooting Zone. 73 Figure 31: The warm spring 75 LIST OF TABLES Table 1: Surface water flows (l/s) measured at key points in the Wharekirauponga stream catchment. Table shows actual flows measured between Jan 2019 and May 2021 and long term median flows based on all monitoring data (GHD 2022). 20 Table 2: Proposed conditions for the Waihi North Biodiversity Project. 30 Table 3: Hazardous substance volumes and classifications. 51 Table 4: Activity status of land use consents required for the works within the CFP. 55 Table 5: Activity status of the resource consents required to establish and operate the WUG and Tunnelling System (Area 1). 60 Table 6: Summary of key management and monitoring measures for Area 1 (WUG, including the Dual Tunnels) 89 Table 7: Consideration of Alternative Methods of Discharge 132

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