B-1 - Area 1, Coromandel Forest Park – Assessment of Environmental Effects 60 Table 5: Activity status of the resource consents required to establish and operate the WUG and Tunnelling System (Area 1). Activity Relevant Rules Comment The Use of Land (RMA s9(2)) To drill below the water table to establish underground tunnels, portals and mines using a drill and blast technique. Discretionary activity under Rule 3.8.4.8. The dual tunnels, stoping and declines will be established using the drill and blast technique. Installation of new bore holes and piezometers will also be required. This will not take place near any Geothermal Features so Rule 3.8.4.9 does not apply. To drill holes below the water table to establish and operate piezometers. Discretionary activity under Rule 3.8.4.8. Various piezometers will be installed for monitoring purposes. To undertake soil disturbance and vegetation clearance in a high-risk erosion area. Discretionary activity under Rule 5.1.4.15. The vegetation clearance and associated soil disturbance at the four ventilation shaft locations may occur on land with a slope in excess of a 25degree gradient. The permitted activity standards of Rule 5.1.5 and the controlled activity standards of Rule 5.1.4.14 will be unable to be complied with due to the volume of material removed for each shaft. Resource consent is therefore required as a discretionary activity under Rule 5.1.4.15. To take, use, dam and divert water (RMA s14 consents) To take and divert groundwater intercepted during tunnelling and stoping activities. Discretionary activity under Rule 3.6.4.13. Discretionary activity under Rule 3.3.4.24. Groundwater will be intercepted during tunnelling and stoping activities. It may be diverted around active working areas (using grouting etc) or drained into the mine workings, where it will either be recycled for drilling purposes or pumped directly to the WTP for treatment and discharge to the Ohinemuri River.
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