Background
SGME was engaged to complete a site investigation, develop remediation options and provide mine closure services for the preferred rehabilitation option at a legacy mine in New South Wales (NSW). The mine is approximately (~) 36 kilometres (km) from Glen Innes in NSW. It operated from the mid-1880s to the mid-1950s and disturbed ~35 hectares (ha).
Objective
The government’s legacy mine program assists landholders with rehabilitating impacts from derelict mines. The mine has undergone some remediation; however, there is evidence of continued contamination to the receiving environment from acid mine drainage.
Solution
A site investigation was done by SGME before developing a closure plan and construction drawings. The closure plan described a process for remediation that would result in a stable landform and reduced impacts to the receiving environment. The closure plan also:
• identified cost-effective and practical remediation options to reduce environmental and safety risks;
• presented detailed design, drawings and costings of the preferred remediation option for:
water management structures; and
capped contamination containment cell;
• justified a preferred solution and provided a scope of works for implementation; and
• provided documentation to allow approval works to proceed.
SGME’s approach to mine closure planning focuses on dynamic adaptation, accuracy and relevance throughout the mine’s life cycle. We prioritise strategic evolution planning, active stakeholder engagement and a commitment to sustainable development. By collaborating with stakeholders, integrating leading practices and leveraging advanced technologies, we empower clients to implement responsible closure practices and create enduring value beyond closure.
