Supporting Technical Assessments

June 2022 G-01483.84-017-R-Rev0 Because the 53 12.0 REFERENCES Beca 2020: WKP Mine Technical Description of Infrastructure, Development & Exploration Phase. 24/09/2020. Beca 2021: WKP Exploration Decline Project Infrastructure Design Layout. Pdf drawing No. WAI-981-000 DWG-CI-1111 dated 02 07 2021 - 2210835-CA-1111-1111.pdf. Braithwaite, R.L., Christie, A.B. 1996: Geology of the Waihi area, scale 1:50,000. IGNS geological map 21. Citrex Civil 2021. T-Recs Turf Matting source internet 25 November 2021 https://cirtexcivil.co.nz/products/turf-matting/t-recs-turf-matting/. Edbrooke SW, 2001, Geology of the Auckland Area, Institute of Geological and Nuclear Sciences 1:250,000 geological map 3. 1 Map sheet and 74-page document. GHD 2020: WKP Exploration Tunnel, Water Management and Geochemistry. Draft report to Oceana Gold New Zealand Limited, dated September 2020. GHD 2021a: Graph of Pond volume up to 24h storm with C=1, email to OceanaGold New Zealand Limited, September 2021. GHD 2022: Waihi North Groundwater Assessment WAI -985-000-REP-LC-0012.Rev0. Consultant’s report to Oceana Gold New Zealand Limited, dated June 2022. Golder 2021. Preliminary Geotechnical Assessment for Exploration Tunnel, Willows Road, Waihi. Golder Report reference 20148384-002 R-Rev0 consultant’s report to Oceana Gold Limited dated 29 June 2021. Golder 2022. OceanaGold WKP Project geotechnical assessment of underground mine and tunnels. 21464271-006-R-Rev 0 Final report for Oceana Gold Limited dated 3 December 2021. GWS 2020: Project WKP Assessment of Groundwater Effects – Willow Farm and Exploration Tunnel. Draft report to OceanaGold dated 2 October 2020. Litchfield NJ, R Van Dissen, R Sutherland, PM Barnes, SC Cox, R Norris, RJ Beavan, R Langridge, P Villamor, K Berryman, M Stirling, A Nicol, S Nodder, G Lamarche, DJA Barrell, JR Pettinga, T Little, N Pondard, JJ Mountjoy & K Clark, New Zealand Journal of Geology and Geophysics (2013): A model of active faulting in New Zealand, New Zealand Journal of Geology and Geophysics. Mitchell Daysh Limited 2022, Assessment of Environmental Effects, dated June 2022. National Institute of Water and Atmosphere 2021. HIRDS Version 4 software, sourced 10 November 2021 as a web based programme at http://hirds.niwa.co.nz/. NZSOLD 2015: New Zealand Dam Safety Guidelines, May 2015, IPENZ. Skempton, A.W. and Northey, R.D. 1952: The Sensitivity of Clays. Geotechnique, 3, 30-53. http://dx.doi.org/10.1680/geot.1952.3.1.30. Waikato Regional Council 2020a.Waikato stormwater management guideline updated version May 2020 (TR2020/07) sourced on the internet 5 November 2021 at https://www.waikatoregion.govt.nz/environment/water/stormwater/#e4789. Waikato Regional Council 2020b. Waikato stormwater runoff modelling guideline updated version May 2020 TR20-06 sourced on the internet 5 November 2021 at https://www.waikatoregion.govt.nz/environment/water/stormwater/#e4789.

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