Clinton Creek Asbestos Mine Remediation
Client: Yukon Government
UMA was asked to mitigate hazards at the abandoned Clinton Creek asbestos mine in the Yukon. Of particular concerns were hazards associated with a breach of a landslide dam and physical hazards downstream of the former mine site.
Using historical data from mine operations, detailed site surveys and photogrammetric mapping, our team assessed the risk and evaluated several remedial options, including channel stabilization and tunnelling to reroute the creek over or around the waste rock. UMA then completed stabilization repairs to reduce the risk of a breach of the landslide dam and mitigated physical hazards through demolition and site regrading activities.
60 million tonnes of waste rock and 10 million tonnes of asbestos tailings that had reshaped the local landscape.
Services provided include:
- Site investigations to assess the overall condition of the mine site features and to identify physical hazards at the mine site
- Preparation of reports for site inspections, flash flooding risk assessment, assessment of physical hazards, conceptual designs, construction reports, long- term performance monitoring plan and a screening level risk assessment report for airborne asbestos
- Presentation to the local community members to illustrate creek channel stabilization repair alternatives and obtain feedback on their concerns
- Completion of construction estimates, drawings and specifications
- Resident engineering services during creek channel stabilization repairs and general engineering support during hazard mitigation activities
- Preparation of record drawings for the creek channel stabilization repairs and hazard mitigation work
- Air sampling for determination of airborne asbestos concentrations
- Presentation of the creek channel stabilization work at the Northern Latitudes Mine Reclamation Workshop in Dawson City, Yukon.
UMA received an Award of Merit from the Consulting Engineers of Manitoba for our work on this project.
