Site-specific Assessments of Environmental Effects

B-5 – Area 5 - Assessment of Environmental Effects 186 The GOP TSF will be purpose built for the disposal of tailings, which by their nature, are hazardous substances. As set out in preceding sections, the TSF has been designed to minimise the potential for leaching of contaminants to ground water and land and to withstand natural hazard events (refer to Sections 5.11 and 5.4 of this AEE for further detail). The in-pit TSF has also been designed in accordance with the NZSOLD Dam Safety Guidelines and ANCOLD (2019) Guidelines on Tailings Dams. As set out in Section 5.8 of this AEE, all other hazardous substances transported to or stored within Area 5 will be done so in accordance with the requirements of the HSW-HS and the Land Transport Rules: Dangerous Goods 2005. Measures are also proposed to ensure the risk of fire and the risk of spills of ecotoxic liquid hazardous substances are appropriately managed to minimise the effects to people, property and the environment. All mitigation measures set out in this section will ensure that contaminated land is managed, such that any risks to human health and the environment are acceptable. Overall, the activities within Area 5 will be undertaken in a manner which ensures that the risk of adverse effects on the environment and community associated with the transportation, storage and use of hazardous substances and the use of contaminated land are appropriately managed and where necessary, minimised. 7.7 OTHER MATTERS The Whaia te Mahere Taiao a Hauraki (“Hauraki Iwi Environmental Plan”) is considered relevant, and notes the following in relation to mining activities: the extraction of gold, silver and other mineral resources has left long-standing environmental problems in the Hauraki rohe. The disposal of wastewater, chemicals and spoil from the mining process, although much improved, remains an environmental concern to Hauraki iwi; the loss of waahi tapu, including Pukewa; Hauraki iwi seek reduced environmental risk from mining in the Hauraki rohe; and Hauraki iwi seek to enhance their capacity by monitoring mine sites. As already noted, the relationship of iwi with the Wharekirauponga area remains a matter under discussion. OGNZL continues to work with tangata whenua regarding activities occurring within Area 5 and the wider WNP. Through this consultation process, OGNZL seeks to ensure the activities associated with the WNP align with the objectives set out in the Hauraki Iwi Environment Plan. 7.8 PART 2 OF THE RESOURCE MANAGEMENT ACT 1991 It is understood that a consent authority is not required to consider Part 2 of the RMA beyond its expression in the relevant statutory planning documents. In effect, in most

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