This section of the Environmental Impact Assessment for the Canadian Natural Resources Limited Horizon Project provides information on traditional land use as required by the Horizon Project Terms of Reference (AENV 2001). The potential impacts to traditional land users were evaluated based on an understanding of how aboriginal peoples have used and continue to use the land and resources within the area. The Regional Study Area for Fort McKay was defined as the total traditional territory of the Fort McKay First Nation, which includes Chipewyan and Cree Treaty Indians, Métis, and non-status Indians who live in Fort McKay. Members of other nearby communities are known to practice a traditional lifestyle in areas that overlap this zone, both presently and in the past including the Athabasca Chipewyan First Nation, the Mikisew Cree First Nation, and the Métis Nation of Alberta Zone 1. The Local Study Area was defined based on consideration of trapline boundaries of the Horizon Project. From the perspective of evaluation of effects to traditional land use for this EIA, traplines provide the most appropriate basis for defining a Local Study Area, since most traditional activities in this area are carried out on traplines. The traditional environmental knowledge and land use assessment is divided into seven main sections: Introduction, Assessment Approach, Baseline Summary, Existing/Approved Case, Project Development Case, Planned Case, and Conclusions. Supporting the assessment provided in this section of the EIA are three Traditional Land Use baseline reports, one for the community of Fort McKay, the members of which will be directly affected by the Horizon Project, one for the community of Fort Chipewyan, and one for Claude and Maureen Dastous, non-aboriginal trappers whose activities will also be affected.