By contract dated April 23, 1976 (Supply and Services Canada 04SZ. KH 601-5-1157) Acres Consulting Services was authorized to make the study, \"A Climatology of Low-Level Air Trajectories in the Alberta Oil Sands Area\". The study is part of the Alberta Oil Sands Environmental Research Program (AOSERP) sponsored jointly by Alberta Environment and Fisheries and Environment Canada. The Scientific Authority responsible for all matters concerning the scientific and technological content of the work was Mr. M. P. Olson, Atmospheric Environment Service (AES). The principal investigator on the project was Mr. P. J. Denison, Acres Consulting Services (ACS). One initiation and three progress meetings were held during the course of studies.