"This report presents an analysis of the application of the steam flood process to bitumen recovery at Asphalt Ridge, a major tar sands deposit in Utah. The analysis is based on the results of an in situ pilot test conducted by the Laramie Energy Technology Center, supplemented by an in-depth literature review. The analysis assumes a possible recovery of 20% of original oil saturation, which is much better than that actually achieved, in the field test, but approximates that predicted by the simulation and laboratory results. Production costs at this recovery rate are S45.69/bbl for a 1-acre well pattern, of which 63% is energy costs. Thus, improved steam-to-oil ratios would sharply reduce production costs. Modified steam flood processes have reportedly performed successfully in other tar sands locations. These processes warrant investigation for applicability to the Utah tar sands. Comparison of the steam flood and the dry combustion processes shows the latter to have a significantly lower production cost because of better oil recovery."