Remediation activity over the past period has focused on re-establishing affected portions of Apetowun Creek within five kilometres of the Main Pond. This was the area of greatest disturbance and the creek channel was heavily damaged. The following activities were undertaken:
Sediment left behind by the release was recovered.
Bank re-establishment and recontouring was completed.
Downed timber that was previously moved was strategically replaced to provide ground cover.
Contouring and riprapping was completed on a culvert area.
Assessments were completed with wildlife and aquatic habitat specialists to remediate any impacted habitat areas.
Further assessments for the remainder of Apetowun Creek will be ongoing in May and June.
Completed the construction of four sediment traps in Apetowun Creek. These are structural features in the creek that are in place to collect potential sediment left behind from the release.
A number of erosion control materials have been installed along the creeks to help decrease the potential for erosion in disturbed areas.
Data sondes were installed in Apetowun Creek to monitor the level of suspended solids. Periodic flow measurements are also being taken. These tests are in addition to the continuing water monitoring program in and around the creeks and Athabasca River.
A regional soil sampling program has been initiated around the mine site.
Wildlife cameras continue to be maintained and track counts were completed.
Testing programs on the soil, sediment, deposited solids and water will continue for the foreseeable future.
A Final Impact Assessment Report was submitted to the Alberta Energy Regulator in May 2014, in keeping with the requirements of the November 19, 2013, Environmental Protection Order.