Supporting Technical Assessments

GHD | Oceana Gold (New Zealand) Ltd | 12552081 | Waihi North 148 8. References AECOM, 2020. Infiltration rates provided for TSF1A embankment slope. Email communication provided by AECOM to GHD, 27 July 2020. AECOM, 2021a. Waihi North Project Geochemical Assessment – Geochemistry of Tailings and Overburden, Treatment and Mitigation (WAI-985-000-REP-LC-0038_RevB.1). Draft report prepared for OGNZL, dated 7 October 2021. AECOM, 2021b. GOP TSF groundwater quality geochemical equilibrium assessment results. Email communication provided by AECOM, 3 December 2021. AECOM, 2021c. NRS groundwater quality geochemical equilibrium assessment results. Email communication provided by AECOM, 9 December 2021. CIRIA, 2016. Groundwater control: design and practice. Second edition. CIRIA, C750. London, 2016. Darcy, H. 1856. Les fontaines publiques de la ville de Dijon. Paris: Dalmont. EGL, 1996. Geotechnical Investigations Development Site, Volumes 1-3. Reports prepared for Waihi Gold Mining Co. Limited, dated January to February 1996. EGL, 2018. Waihi mine Storage 3 – Geotechnical Factual report. Draft Report prepared for OGNZL, dated 5 November 2018. EGL Ref. No. 8332. EGL, 2019a. Waihi Mine Northern Rock Stack Geotechnical Factual Report. Draft report prepared for Oceana Gold (New Zealand) Ltd. 19 April 2019. EGL Ref. No. 8332. EGL, 2019b. Waihi Storage 3 - Tailings permeability profile information. Email communication provided by EGL, 28 February 2019. EGL, 2019c. EGL8332 - Storage 3 - Texture of Embankment Zone Material for GW Modelling. Email communication provided by EGL, 30 January 2019. EGL, 2021a. Waihi North Project. Tailings storage and rock disposal. Volume 4. Northern Rock Stack RL173 Proposed Rock Disposal Facility Technical Report. EGL Ref 9018. Report prepared for Oceana Gold (New Zealand) Limited. OGNZL Document reference: WAI-985-000-REP-LC-0006. 22 October 2021. EGL, 2021b. Waihi North Project. Tailings storage and rock disposal – Volume 3. Proposed tailings storage facility – Storage 3 RL155 Technical Report. Report prepared for Oceana Gold (New Zealand) Limited. OGNZL Document reference: WAI-985-000-REP-LC-0004. 8 October 2021. EPA, 1996a. Low stress (low flow) purging and sampling procedure for the collection of groundwater samples from monitoring wells. U.S. Environmental Protection Agency, July 1996, Revised September 2017 (EQASOP-GW4) EPA, 1996b. Low-Flow (Minimal Drawdown) Ground-Water Sampling Procedures, April 1996 (EPA/540/S95/504). FloSolutions, 2022. Wharekirauponga Underground Project. Updated Conceptual Model – EG Vein Report. Prepared for Oceana Gold (New Zealand) Limited. 26 April 2022. Groundwater consultants (NZ) Limited (GCNZ), year unknown. Martha Hill Project. Groundwater levels and flow (21/1/1983). GHD, 2020. WKP Exploration Tunnel – Water Assessment. Conceptual Geological Model Data Report. Letter report dated 19 August 2020. Project reference 12533658.

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