Approved by: Process Manager Approval Date: 16/12/2021 Next Review: 16/122023 OceanaGold Waihi Document ID: WAI-250-PLN-003 Page 2 of 44 Hazardous Substances Management Plan Document Issuance and Revision History Procedure Name: Hazardous Substances Management Plan Document Reference: WAI-250-PLN-003 Revision No. Revision Date Section Page Description of Issuance or Revision Effective Date 1.0 New Document 23/8/2016 2.0 18/12/2017 All All Update to PHMP and included references to new regulations. 18/12/2017 3.0 Next Review 27/12/2018 4.0 21/7/2021 All All Minor edits to gramma, spelling formatting, update of supporting documentation and records in appendix. Update to legislation references. 16/12/2021
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