Supporting Technical Assessments

Waihi Emergency Principal Control Plan Approved by: General Manager/SSE Approval Date: 26/03/2021 Next Review:26/03/2022 OceanaGold Waihi WAI-250-PLN-001 Page 2 of 124 Document Issuance and Revision History Document Name: Waihi Emergency Management Plan Document Reference: WAI-250-PLN-001 Revision No. Revision Date Section Page Description of Issuance or Revision Effective Date 1.0 Updated to OGNZL 16/3/2016 2.0 All All All Remove Duty cards to form separate document, Add requirement for evacuation drills. Update security contact lists. IMT Support Contact List and Recovery Manager position removed and added to CIMS position packs. Update for reference to new Act and Regulations. 8/11/2016 3.0 Dec 2017 All All Annual Review – Update the map on page 4, Updated firefighting plans in appendix. Remove contact list so it can be added as required to plan. Add delay in assessing injured person to TARP, the Hierarchy of Controls, included CIMS/IMT structure. Typo’s. Alignment of table 2 & 8. 24/1/2018 4.0 May 2018 - 1 Change UG Manager Signature 14/5/2018 Appendix N 77 Appendix N – Cyanide emergency procedures added from CN management Plan 5.0 July 2019 All Evase procedure removal from Appendices. Addition of UG firefighting resource as part of NZMRS review of EMPCP. Added helicopter incident TARP 1.22. 26/07/2019 Draft Sept 2019 69 Add Spill response plan for Class 5 Explosive Draft Feb 2020 61/96 Added Explosive Blast Pressure Distance Map, TARP – Explosive Fire Emergency 6.0 May 2020 111/112 Edit Security Duty Card 03/06/2020 7.0 Jan 2021 14.5.5 25 35/36 52 58 112 Edit Security Duty Card Add to fire fighting resources Add Appendix E (Fixed Plant Gas Detection) and Appendix T (Mapping) Edit Emergency contacts Add detail to section 10.6 26/03/2021

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