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-12- I-" 00 ~ ~ (c) The proces~ is highly adaptable for use in conjunction with the simultaneous production of power and process steam from a large scale mutti-purpose facility located at a single toca- tion having a fossil or nuclear heat source. Specific advantages using the electrodialysis process include: (a) ~D process permits high flexibility in plant location with respect to feedwater supply, power source and pr04uct water use to achieve the greatest economic advantage of plant operation. (b) Air and environmental pollution around the Salt Lake City area caused by operation of a locally based heat source can be prevented through transmission of power to the ED plant from a power plant located at a remote location. (c) Because of its operating flexibility, the ED plant can be operated in a manner to take advantage of low cost off-peak power supply. (d) Technological advances expected in high te~perature feedwater ED plant operation, using heat from a separate coal fired boiler or from a multi-purpose heat source, could potentially reduce desalted water costs by as much as 30% over low temp- erature feedwater ED plant operation. 6. Preliminary estimates of desalting and associated costs indicate that water reclamation should be considered in the development of future water plans in Utah as an alternative source of supply. Total costs for 500 ppm desalted potable water delivered to the Salt Lake City msins are estimated to fall within $63-$108 per acre-foot, using a feedwater salinity of 2500 ppm. Total costs were similar for either a multi-stage flash dis- tillation unit at Little Mountain or an electrodialysis unit at the Jordan River delta. 7. There is a major potential industry for minerat recovery and processing utilizing brines from Great Salt Lake. The current indicated pot~ntial of the Great Salt Lake mineral industry and other industries along the Wasatch Front could provide msrkets for any electrical energy and process steam which might be associated with the desalting complex considereq in this study. Current utility planning includes power need~ in the amount of 500 MWe by the 1975 period and an additional 500 MWe block prio~ to the 1985 period. This is exclusive of the additionat load required for desalting, A more detailed study and market projection are needed to fully assess the potential industrial power and process steam requirements.