Stream diversion that is ecologically functional. Reduced aquatic connectivity Low Offset through diversion Very low Sediment intrusion Low Settlement and treatment prior to discharge Very low Tailings Storage Facility (TSF3) Ruahorehore Stream Moderate - High Diversion of 2,111 m of stream length Low Fish and kōura salvage and relocation. Stream diversion that is ecologically functional. Low Reduced aquatic connectivity Low Offset through stream diversion Low Sediment intrusion Low Settlement and treatment prior to discharge Low Farm detention pond Low Loss of pond habitat Negligible Fish salvage and relocation Negligible Re-consenting the Water Treatment Plant Discharge Annual monitoring of the ecological values of the Ohinemuri River have remained stable and persistent since operations at Oceana Gold Waihi commenced. OGNZL continues to comply with the consent conditions by carrying out the monitoring and any repeat sampling and investigations required by the treated water discharge permit. We emphasise that for the most part, over the sampling period, monitoring of the Ohinemuri River shows that the operations at Oceana Gold Waihi continue to meet the required receiving water quality standards with no detriment or adverse effect to the ecological values of the Ohinemuri River. There is no evidence that the discharge from the Oceana Gold Waihi water treatment plant (WTP) to the Ohinemuri River has caused any detrimental effects to the ecological values of the Ohinemuri River, and the ecological values have been maintained as anticipated by the criteria as set out in the consent conditions. Accordingly, re-consenting the WTP with the same receiving water quality standards will not result in detrimental effects on the ecological values of the Ohinemuri River. Notwithstanding this, we have recommended additional consent conditions for monitoring attributes in the Ohinemuri River to better understand the condition of the river, and for the purpose of better informing the Waikato Regional Council’s future implementation of the National Objectives Framework under the National Policy Statement for Freshwater Management.
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