U:\2021\BM210482_IBo_Waihi_North_Project\Documents\WNP_Freshwater_Report_May_2022\FINAL_Freshwater_Report_FOR DELIVERY_June 2022\FINAL DELIVERED 17 JUNE 2022\WAI-985-000-REP-LC-0007_Rev0_Freshwater_20220621_FINAL.docx Table 25: Summary of ecological values and significance for indigenous biodiversity at locations of the WNP. Feature Ecological value Biodiversity Significance Willows Road Farm wetland Moderate Y Gladstone Wetland Moderate N Mataura Stream Very High Y Mataura Stream unnamed tributaries Low N Gladstone unnamed tributary Low N TB1 Low N Ruahorehore Stream – upper catchment High N Ruahorehore Stream – lower catchment Low N 14.0 Wharekirauponga Underground Mine: Ecological Effects and Management 14.1 Proposed Activities 14.1.1 Overview The proposal at Willows Road involves the development of a single temporary overburden area (referred to as a rock stack) and associated water management features, as well as general site management infrastructure. The proposed activities relevant to freshwater and wetland ecological values at the location include (see Figure 21): • Development of a single rock stack. • Borehole(s) to collect natural seepage flows and deliver to the same tributary downstream. • Creation of a collection pond at the foot of the rock stack to collect contaminated runoff from the stack and send it to the WTP. We have relied on information provided in the following reports: • WSP 2021. OGL – Mataura Stream Site Visit 21 September 2021. Technical memorandum dated 23 September 2021.
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