B-5 – Area 5 - Assessment of Environmental Effects 189 Discharge Receiving Environment Alternative Methods of Discharge Ohinemuri River via two discharge points. had any demonstrated adverse effects on the environment, as confirmed by OGNZL’s extensive monitoring in this area, no further alternatives were considered. To discharge water from the WTP collection pond to the Ohinemuri River. . Refer to Section 2 of this AEE. This is a continuation of the existing discharge approach authorised by resource consent AUTH97135. As this approach has not had any demonstrated adverse effects on the environment, as confirmed by OGNZL’s extensive monitoring in this area, no further alternatives were considered. Discharge of contaminants to air from mining associated with the GOP and in-pit TSF. Refer to Section 2 of this AEE. The discharge of contaminants to air will be undertaken in accordance with best practice and are appropriate considering the nature of those discharges and the receiving environment. 7.10 SECTION 107 OF THE RESOURCE MANAGEMENT ACT 1991 Sections 107(1)(a) and (b) of the RMA specify that the consent authority shall not grant a discharge permit allowing the discharge of water / contaminant into water or land if, after reasonable mixing, the contaminant or water discharged (either by itself or in combination with the same, similar, or other contaminants or water) is likely to give rise to all or any of the following effects in the receiving waters: The production of any conspicuous oil or grease films, scums or foams, or floatable or suspended materials; Any conspicuous change in the colour or visual clarity; Any emission of objectionable odour; The rendering of fresh water unsuitable for consumption by farm animals; and Any significant adverse effects on aquatic life. Based on the assessments in Sections 5 and 6 of this AEE, the discharge of water / contaminants to water or to land in circumstances where it may reach water will not give rise to any of the effects listed above after reasonable mixing.
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