Tailings Management
Management Approach
We are committed to responsible tailings management aligned with global best practice for safety, the environment and communities during all phases of the facility lifecycle. Our tailings management approach is based on compliance to our Tailings Storage Facility
Sustainability Performance Standard that is aligned with Global Industry Standard on Tailings Management (GISTM)49, and relevant guidelines to ensure structural stability and support risk mitigating actions. A full list of tailings facilities is provided in the Church of England Tailings Dam Management Disclosure. The disclosure includes current volume, date and findings of most recent risk assessments and consequence classifications.
The tailings facilities are planned, designed, constructed and operated in accordance with our Tailings Storage Facility Sustainability Performance Standard informed by leading industry practices and guidelines. Our tailings management approach integrates climate change, stakeholder engagement, emergency management, local communities, receiving environment, dam safety and post mine land use.
Risk Management, Review and Assurance
Evolution’s approach to tailings management is overseen by the Tailings Storage Facilities Governance Committee. Tailings storage facility risk assurance is achieved through rigorous design, construction and operations management, routine inspections and monitoring and
independent review and audit processes. Risk reduction is a key priority, and we are working toward this through continual review and improvement of design and operation practices to further reduce risk. In alignment with our general approach to waste minimisation,
recycling and reuse, tailings are reused to stabilise severalof our underground operations.
Performance
Material risk management:
All sites have a Critical Control Program in place and regularly conduct and report on verification activities and outcomes.
Monitoring and Surveillance:
All Tailings Facilities are operated in accordance with a Tailings Operations Manual and employ monitoring and surveillance systems to
monitor tailings storage facility performance over time. Where applicable, real-time monitoring is utilised, and satellite monitoring is also included for all facilities. This information is integrated into a management system that outlines triggers and response requirements by all sites for active facilities.
Site-based Responsible Person:
Each site has an identified Responsible Person to ensure ownership and appropriate management of each tailings storage facility.
Dam Safety Inspections:
Formal dam safety inspections are conducted at least annually by the Designer / Engineer of Record, and reports are issued to the Responsible Person for action of recommendations.
Independent Review:
Our Tailings Storage Facility Sustainability Performance Standard requires operations to review all designs and conduct dam safety reviews at regular intervals.
Tailings Governance:
LOD2 tailings assurance is
undertaken quarterly with each operation conducting a quarterly performance review focusing on impoundment stability, integrity, risk review and planning coordination. Evolution provides Group-level oversight as to whether the tailings facility design and performance meet
accepted standards/codes of practice. Performance reports and operational updates are provided to the Tailings Storage Facilities Governance Committee and the Leadership Team with oversight by the Risk and Sustainability Committee.
