B-2 – Area 2 - Assessment of Environmental Effects 91 7.3.2 National Environmental Standard for Air Quality The NES Air sets out ambient air quality standards for a number of contaminants for the protection of public health - including fine particulates (“PM10”), sulphur dioxide (“SO2”), carbon monoxide (“CO”) and nitrogen dioxide (“NO2)”. It applies where people are likely to be exposed for periods commensurate with the relevant assessment averaging period. The NES Air also includes concentration limits and the specified number of occasions that those concentration limits may be exceeded within any year. The standards specified in the NES Air, along with the Regional Ambient Air Quality Guidelines, are considered in Section 5.5 of this AEE. This section concludes that the concentrations of PM10, NO2, CO and SO2 associated with any air discharges from the activities occurring with Area 2 are expected to remain within the relevant standards. As such, the NES Air is not an impediment to the granting of the air discharge permits required for Area 2. 7.3.3 National Environmental Standard for Assessing and Managing Contaminants in Soil The NES Soil seeks to ensure that land affected by contaminants in soil is appropriately identified and assessed before it is developed. A number of historic and existing activities undertaken within Area 2 meet the definition of a HAIL activity. Accordingly, the NES Soil is relevant with respect to soil disturbance activities occurring in and around these areas of known contamination. Once established and operating, Area 2 will also be considered a HAIL by virtue of its use for mining purposes (HAIL Activity E7: Mining industries). The NES Soil is therefore relevant with respect to the implementation of the closure plan and the associated change of use. The requirements of the NES Soil and the associated effects associated with contaminated land are discussed further in Sections 4.1 and WWLA (2022) report. 7.3.4 National Environmental Standard for Sources of Human Drinking Water The NES Drinking Water sets requirements for the protection of sources of human drinking water from contamination. A human drinking water source is a natural water body that is used to supply a community with drinking water. The NES Drinking Water applies to resource consent applications for activities upstream of an abstraction point of a registered drinking water supply. The HDC holds water permits from the WRC to abstract water from the Ohinemuri River and Wamsley Stream for community drinking water supplies.10 The primary activity occurring upstream of the Wamsley Stream water abstraction relates to the taking of groundwater associated with 10 AUTH130392003.01 and AUTH30392.01.01
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