B-2 – Area 2 - Assessment of Environmental Effects 114 meet the purpose and values for which the water body is being managed;92 protect and preserve the natural character of wetlands and rivers and their margins from inappropriate use and development;93 maintain or enhance ground water quality and ensure ground water takes are managed to ensure sustainable yield;94 with respect to groundwater takes, do not adversely affect the values of potentially affected surface water bodies;95 with respect to concentrations of contaminants leaching from land use activities and non-point source discharges to shallow ground water and surface waters, not reach levels that present significant risks to human health or aquatic ecosystems;96 and, recognise the positive effects of water resource use activities and associated existing lawfully established infrastructure, while avoiding, remedying or mitigating adverse effects on the environment.97 Of particular relevance to this objective: Area 2 forms part of the wider WNP. The WNP will result in an expansion to OGNZL’s mining operations and will extend the life of the mine for another six years, to at least 2036. The project will generate $626m of additional capital investment, to unlock $3.4b of additional silver and gold exports and provide over 300 additional well-paid jobs directly at the mine and over 1000 additional indirect jobs among suppliers and wider community. The additional contribution to the local (Hauraki District) GDP is the equivalent of 37% per year of Hauraki District’s GDP in 2019; 98 GHD (2022) have considered the effects of activities within Area 2 on water quality. Of particular note: 99 o the RWQC will continue to be met within the Mataura Stream. o the effects of changes to surface water quality will be limited, within a negligible effect on the nearest authorised surface water user. o increases in trace elements from groundwater discharges to the Mataura Stream will be so minor, they are unlikely to be detected within laboratory analytical 92 Objective 3.1.2(l), Section 3, Waikato Regional Plan. 93 Objective 3.1.2(l), Section 3, Waikato Regional Plan. 94 Objective 3.1.2(m), Section 3, Waikato Regional Plan. 95 Objective 3.1.2(n), Section 3, Waikato Regional Plan. 96 Objective 3.1.2(o), Section 3, Waikato Regional Plan. 97 Objective 3.1.2(p), Section 3, Waikato Regional Plan. 98 Objective 3.1.2(a), Section 3.1, Waikato Regional Plan. 99 Objective 3.1.2(b) and (m), Section 3.1, Waikato Regional Plan.
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