The objective of this study is to determine the hydrogeologic framework of the Granite Wash Formation (and equivalent Keg River sand, Chinchaga sand and Keg River Carbonates) in the Boyer area and its relationship to the northern fringe of the Peace River Arch. The Keg River and Chinchaga sands diachronous deposits occur at stratigraphically similar positions on the Precambrian basement surface surrounding the Peace River Arch. The Keg River Carbonates are the stratigraphic equivalent of the Keg River Sands,