B-6 – Area 6 – Assessment of Environmental Effects 59 5.10.1.2 Nuisance Effects of Deposited and Suspended Dust The assessment of potential effects described in Beca (2022) identifies that there is a risk of sensitive receptors located within 100m of the proposed activities being exposed to infrequent, short duration discharges of deposited dust and TSP during dry, windy conditions. The closest privately-owned dwellings to the NRS are located approximately 100 m to the east of the closest stockpile associated with the NRS and approximately 300 m from the nearest corner of the NRS. These dwellings will be downwind of the proposed NRS and associated stockpiles in the prevailing westerly winds for approximately 19.6% of the time. OGNZL proposes to revegetate the stockpile as soon as practical after construction is complete, which will minimise the generation of dust and the duration of potential impacts on this dwelling from the closest potential source. There are also additional privately owned dwellings and developable privately owned land, located approximately 500 m and 350 m respectively from the NRS. Beca (2022) considers risk of these properties being adversely affected by dust from the construction and operation of the NRS is low, given their separation distance and natural features which would shield them from adverse dust effects. 5.10.1.3 Health Effects The concentrations of PM10, respirable crystalline silica (RCS), nitrogen oxides (NO2 and NO) and carbon monoxide (CO) has been assessed as remaining within the National Environmental Standards for Air Quality (“NESAQ”), guideline values and current consent limits. 5.10.2 Effects on Flora and Fauna As dust emissions from the WNP are not expected to result in any significant increase in dust concentrations, adverse effects on vegetation are also not expected to occur. The area has a relatively high rainfall and any dust collected on the vegetation will be regularly washed off in rain events. 5.10.3 Mitigation and Monitoring To effectively mitigate the potential for adverse air quality effects associated with the surface components of the southern WNP, Beca (2022) recommends: Continuing use of the dust mitigation measures that have been successfully employed at the Waihi mine sites through development and implementation of an Air Quality Management Plan (a draft of which is included in Part I of the application documents); In order to mitigate the effects of nuisance dust for sensitive receptors located within 100 m of mining activities, that additional mitigation measures be implemented when weather conditions are conducive to the generation of dust;
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