Residuals Facilitates Progressive Mine Reclamation

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Client: 
Heidelberg Materials Limited

Heidelberg Materials Limited's Sechelt Mine (formerly Lehigh Materials) is the largest sand and gravel mine in North America. SYLVIS initiated a reclamation program at this site in 1998 focused on the beneficial use of organic residuals as a tool in reclamation. Prior to the program’s inception, thorough engagement with First Nations, the community, neighbours, and employees at the mine was conducted. A community and stakeholder committee was formed to provide share knowledge and address questions and concerns. Following this successful engagement and demonstration program, operational reclamation activities commenced.

Reclamation activities using biosolids or pulp and paper sludge were undertaken at fifteen discreet areas centered on progressive closure of disturbed areas, an approach that ensured new areas were being reclaimed as they were closed to mining activities. The reclamation program enhanced habitat diversification through the establishment of wildlife corridors. Through selected vegetation seeding and planting biodiversity was increased.

Biosolids from the City of Powell River, the Town of Gibsons, the District of Sechelt, and Metro Vancouver were used for reclamation and fertilization activities at the Sechelt Mine. The application of biosolids contributed to rapid soil development, enabling vegetation establishment and moisture retention. The Sechelt Mine provided an environmentally sustainable residuals end-use option for local communities while simultaneously achieving reclamation objectives.

SYLVIS designed and implemented this mine reclamation project in cooperation with the Sechelt First Nations and local school and community groups, increasing awareness and understanding of land reclamation and environmental stewardship. Ongoing engagement occurred through tours of the application sites, open houses, and newspaper bulletins.

The Heidelberg Materials' Sechelt Mine reclamation program was one of the longest standing biosolids mine reclamation programs in British Columbia and was recognized with five awards including the prestigious Jake McDonald Reclamation Award from the Technical and Research Committee on Reclamation for outstanding achievement in reclamation.