This community information site has been established to provide timely and relevant information following a breach of a containment pond at the Obed Mountain Mine.
- Independent experts are conducting a comprehensive review of the water quality, soil and sediment data for the current monitoring program.
- A site tour was recently conducted for representatives of the University of Alberta and Alberta Environment and Sustainable Resource Development (AESRD).
- Activities continue in preparation for winter remediation work, and certain approvals have been granted for locations along the Plante and Apetowun Creeks. Winter field work is anticipated to commence shortly, with a focus on recovering sediment and constructing sediment traps, in advance of spring run-off.
- Reconstruction of an erosion channel created by the release is completed. This effort involved re-sloping and stabilizing the earth, and installing rock checks for sediment control.
- An additional sediment sampling program along the Apetowun Creek was conducted, and the samples are currently being analyzed by a third-party laboratory.
- Feedback has been provided by AESRD on certain plans submitted under the Environmental Protection Order. This feedback will be incorporated into the final versions for approval, and dialogue on planning continues with AESRD.
- The ice conditions at six water monitoring sites on the Athabasca River near the Obed Mountain Mine are being monitored on a daily basis, with sampling being adjusted for winter flooding and unsafe ice cover. A seventh location has recently been added to the rotation and will be sampled going forward.
- Preparations for winter remediation work around the Plante and Apetowun creeks are being finalized and activities are expected to commence once approvals are granted by Alberta Environment and Sustainable Resource Development (ESRD) and the Alberta Energy Regulator. The focus will be on recovering and capturing sediment deposited in and along both creeks.
- A new data sonde has been installed just downstream of the Obed Mountain Mine to provide continual, real-time turbidity readings.
- Additional training programs on water sampling have been provided to third-party field consultants that will further strengthen the monitoring program near the Obed Mountain Mine.
- As part of the ongoing water management program at the mine site, an ice drilling program was completed on the main pond to monitor the depth of water.
- All of the initial plans required under the Environmental Protection Order were submitted as required. Sherritt continues to work with representatives from ESRD to incorporate feedback and to prepare medium and long-term plans.