One of the principal features which governs the selection of a process applicable to Utah is its overall water consumption and its water recycle capability. The overall water consumption should be as low as· possible and the recycle potential high. The lowest overall water use may be achieved in a process which uses no water in the extraction stage. lnthe case of an above ground process this would correspond to a process using solvents only for the extraction or a direct thermal recovery operation such as retorting. An in-situ process employing a fireflooding technique or radio frequency heating method of extraction would have no water use. Produced water may occur from the formation and possibly from bottom water entry. Recycling of the water necessitates the removal or reduction of the oil, fines, solvents and inorganic chemicals. The degree of cleaning depends on the point of reuse. A second criteria is the. ability of the process to separate the bitumen from the Utah tar sands. The Utah tar sands physical composition is different from the Athabasca tar sands in that the Utah sands are not wetted like the Athabasca sands. The lack of a layer of water on the sand particles surface changes the capability of some processes to recover the oil. Another important criterion for process selection is its economic feasibility. To date tar sand I?}~ocess development in the U.S. is still in the pilot stage. One company plan~€I to build a 20,000 bpd plant in Utah and when this comes on stream it will be the largest tar sand facility in the U.S.A. The feasibility of processes may be determined after pilot project tests and scaling up to commercial size.