We conducted our limited assurance engagement in accordance with the International Standards on Assurance Engagements (ISAE) Attestation Engagements Other Than Audits or Reviews of Historical Financial Information and the guidance set out in ICMM’s Sustainable Development Framework: Assurance Procedure (the Framework) document, as well as ICMM’s Applying the ICMM Assurance Procedure: An Interpretive Guide document.