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• Fort McKay (AMS 1)
• Mildred Lake (AMS 2)
• Lower Camp Met Tower (AMS 3)
• Buffalo Viewpoint (AMS 4)
• Mannix (AMS 5)
• Patricia McInnes (AMS 6)
• Athabasca Valley (AMS 7)
• Fort Chipewyan (AMS 8)
• Barge Landing (AMS 9)
• Albian Mine Site (AMS 10)*
• Lower Camp (AMS 11)
• Millennium (AMS 12)
• Syncrude UE-1 (AMS 13)
• Anzac (AMS 14)
• CNRL Horizon (AMS 15)
• Albian Muskeg River (AMS 16)*

*Note: AMS 10 was retired due to mining in the location. It has been replaced with AMS 16 which is 4km SE of the former AMS 10 site.

A Passive Monitoring Station is simply a series of filters extended above the forest canopy that absorbs the air rather than drawing the air in. These passive filters are placed in remote locations to help us determine the dispersion of pollutants and their concentrations. Passive filters are collected by helicopter periodically and are sent to a lab for analysis. The pollutants collected include ozone, sulphur dioxide, nitrogen dioxide, and hydrogen sulphide.

We currently operate twenty seven passive monitoring stations. Four are located at MacKay River near Petro-Canada; three located at our ambient air monitoring stations (AMS 1 - Fort McKay, AMS 6 - Patricia McInnes, and AMS 14 - Anzac); eleven are dispersed in the forests of the region; and nine are dispersed around the lakes of the region.