9 Tonkin & Taylor Ltd Hazardous Substances Technical Assessment – Waihi North Project - Storage and use of hazardous substances at Willows Road site and the Wharekirauponga Underground Mine Oceana Gold (New Zealand) Limited June 2022 Job No: 1015212.1000 vRev0 3 Sensitivity of local environment 3.1 Willows Road portal entrance site The portal entry and areas of hazardous substance storage (the SFA and at the surface explosives magazine compound) are located entirely within land owned by OGNZL. This land is zoned Rural under the Hauraki District Plan (HDP). The tunnel itself extends to the Wharekirauponga ore body beneath the Conservation (Indigenous Forest) zone which is also scheduled as a Significant Natural Area (seeFigure 3.1). Figure 3.1: Surrounding land zoning of areas around the Willows Rd site (OGNZL owned land outlined in red) (map derived from: Hauraki-dc-govt.nz) The nearest Residential Zone land is the township of Waihi approximately 2 km southwest of the portal entry. The closest dwellings are located in the Rural Zone to the south, approximately 580 m away from the explosive magazines, as shown inFigure 3.2 below. The Rural zoning of the land to the south provides a buffer of low-density land use between the Willows Rd site and the Waihi township residential areas. However, use of this land for rural residences and farming and the recreation opportunities provided by land to the north (Coromandel Forest Park) means the surrounding land uses are potentially sensitive to the effects associated with explosives storage at the proposed explosives magazines and the storage of oxidisers adjacent to the portal entry. The Mataura Stream flows along the northern border of the site with the Coromandel Forest Park. It bisects the site north of the SFA and connects with the Ohinemuri River southeast of the site. The stream is sensitive to effects associated with spills of ecotoxic materials.
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