The uppermost Cretaceous and Tertiary formations in southern Alberta are a unique gas exploration target with potential for both coalbed methane and sandstone-hosted natural gas. New reserves typically occur at shallow depths between 175 and 1,000m and at pressures as low as two and a half times less than normal hydrostatic pressures. As a result, conventional testing and logging techniques are ineffective, often resulting in bypassed pay and overly conservative gas resource estimates. This exploration-oriented unconventional resource study combines detailed stratigraphy, petrophysical modelling, and hydrogeological methods in order to predict areas and formations that are gas saturated within the Twp. 10-20, Rge. 18-29W4 area. Over 3,000 wells were used to identify 48 stratigraphic units within the Paskapoo to Basal Belly River interval, from which detailed reservoir, coal thickness distribution, and resource maps (BCF/section) were created. The calculation for each formation takes into account variations in reservoir quality and thickness, pressure and the potential of total gas saturation versus gas and water saturation. The overall un-risked resource potential for all sandstone formations in the study area is five TCF of gas-in-place.