B-5 – Area 5 - Assessment of Environmental Effects 178 not present a significant risk to human health or the environment when discharged beyond these features;216 The sediment retention ponds have been designed to capture and treat runoff from Gladstone and Winner Hills, including an emergency spillway designed to convey a 1 % AEP rain event. During such events, effective dilution is available, therefore such direct discharges will not present a significant risk to human health or the environment;217 The containment and treatment of contaminants as described above ensures that no adverse effects will arise with respect to aquatic habitats and water quality that are inconsistent with the objectives in section 3.1.2;218 Construction activities within Area 5 will be undertaken in accordance with an Air Quality Management Plan, as described in Section 5.17 of this AEE. Accordingly, no adverse effects are anticipated to arise that are inconsistent with the Air Quality objectives in Section 6.1.2;219 and OGNZL continues to work with tangata whenua regarding cultural effects and how the project can best accommodate and provide for their relationship with identified taonga. This is considered further in Section 5 of the Overarching AEE.220 With the above methods in place, it is considered that the outcomes sought by Objective 5.2.2 (and its associated policies) will be achieved. 7.6.1.11 Contaminated Land Objective 5.3.2 and associated policies221 manage the discharges of contaminants from contaminated land so they: do not present significant risk to human health, flora or fauna due to the contamination of soil and ground or surface water;222 do not have adverse effects on water quality or aquatic ecosystems that are inconsistent with the water management objectives in Section 3.1.2;223 216 Objective 5.2.2(a), Section 3.5, Waikato Regional Plan. 217 Objective 5.2.2(b), Section 5.2, Waikato Regional Plan. 218 Objective 3.5.2(a), Section 3.5, Waikato Regional Plan. 219 Objective 3.5.2(b), Section 3.5, Waikato Regional Plan. 220 Objective 5.2.2(e) and (f), Section 5.2, Waikato Regional Plan. 221 Policies 1 – 4, Waikato Regional Plan. 222 Objective 5.3.2(a), Section 5.3, Waikato Regional Plan. 223 Objective 5.3.2(b), Section 5.3, Waikato Regional Plan.
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