122 necessary monitoring in the Ruahorehore Stream due to the influence of its flows on the Ohinemuri River at OH6. The monitoring and assessment methods necessary to implement the Study shall be formulated by a suitably qualified and experienced freshwater ecologist. . 23 By 30 June in each year that the Study is undertaken the Consent Holder shall provide a report that summarises the data collected by the Study. 24 By 30 June of year following the completion of the fourth year of the Study as determined by Condition 20, the Consent Holder shall provide a report that is prepared by a suitably qualified and experienced freshwater ecologist which: a. Summarises the findings of the low flow assessments; b. Provides and assessment of what temperature and dissolved oxygen changes occur in the Ohinemuri River; c. Provides an assessment of any effects changes in water temperature and dissolved oxygen upstream and downstream of the discharge authorised by this consent have on the on the aquatic ecological values of the Ohinemuri River; d. Provides an assessment of the contribution of the treated water discharge (if any) to changes measured in temperature and dissolved oxygen levels upstream and downstream of the discharge; e. Provides recommendations on whether any changes to the operation of the Plant are needed in respect of its contribution to instream dissolved oxygen levels and temperature to safeguard the life supporting capacity of the Ohinemuri River. Such changes may include the need for an alteration to the discharge regime where the results of the study determine that there are adverse effects on ecological values occurring as a result of temperature changes that accrue from the discharge. 25 All biological monitoring sampling and analysis shall have regard to: a. Consistent quantitative estimates of the aquatic biota; b. Consistent laboratory and sorting/counting protocols; c. Consistent taxonomic resolution of aquatic biota; and shall be undertaken to the satisfaction of the Waikato Regional Council. 26 All water quality and sediment sampling and analysis shall be undertaken using Standard Methods for the Examination of Water and Wastewater (19th Edition 1995, or updates), APHA, AWWA and WEF, unless otherwise agreed in writing by Waikato Regional Council. All
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