The Traditional Ecological Knowledge (TEK) effort for the project consists of representatives from the Confederated Tribes of the Colville Reservation (CTCR), Upper Similkameen Indian Band (USIB), and Lower Similkameen Indian Band (LSIB). These Tribes and First Nations play a vital role in incorporating traditional ecological knowledge and indigenous perspectives into the project's decision-making processes.

The TEK group brings deep-rooted cultural and ecological insights, drawing upon the wisdom and experiences passed down through generations. Their knowledge helps to inform and enhance the understanding of the local ecosystem, including the interconnectedness of land, water, wildlife, and human communities.

By integrating traditional ecological knowledge, the TEK group contributes to a more holistic and culturally sensitive approach to the project, ensuring that the social, cultural, and spiritual values of the Confederated Tribes of the Colville Reservation and Syilx Okanagan Nation are respected and considered throughout the whole assessment and decision-making processes.