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o 0). c;;J' " CO such uses (including reservoir evaporation) increase from about 3.8 maf under present conditions of development to nearly 5.4 maf under year 2000 conditions of development. The projected increase in depletions assumes a 500 percent increase in consumption by steam-electric power generation facilities, construct- ion of essentially all of the Upper Basin's presently authorized federal irri- gation projects, and increases in exports out of the Upper Basin equal to, as a first approximation, the announced intentions of those who are planning to make such exports. Obviously, if future depletions by non-EET uses were -- _.--'~,--- to fall short of this projection, then water would be available to support EET development in excess of 1.50 mill~on bazrels per day. The third major assumption upon which the conclusion is premised concerns the water~onsuming characteristics of EETs. For the purposes of this assessment, it has been estimated that net water consumption by the oil shale industry would 'be 5,700 acre-feet per year per unit-sized plant (i.e., per 50,000 barrel per day plant), while the high-Btu coal gasification industry would consume 7,500 acre- feet per year (net) per unit-sized plant (i.e., per 250 million standard cubic foot per day plant).l In addition; the consumption attributable to the spin-off - growth spawned by EET deveJ.opment''''{e.g., municipal and steam electric power gen~ration uses) has been estimated as-being roughly 15 to 20 percent as much as the consumption of the EETs themselves. Thus, total average annual consumption for a 1.5 , million, barrel per. day indust:r)[.would be about 200,000 to 250,000 acre-feet ,depending h . f 'I hId 1 if . . f 'I .. 2 upon__t ~ ffil1{ 0 0.:;1--__ s a e an__ c:oa g(,!.s lcatlou aCl ltles. 1. Water consumption is expressed in net terms in recognition of the fact that certain steps in both high-Btu coal gasification and oil shale retorting processes evolve water. Overall, however, there will be a net consumption of water by these BET facilities (certain experimental oil shale technologies perhaps being exceptions). 2. Expressed relative to Btu output, new water consumption for al oil shale plant was estimated to be 5.38xlO-ll acre-feet per Btu (exclusive of the Btu value of by-product off gases), while that for high-Btu gasification facilities was estimated to be 8.22xlO-l1 acre-feet per Btu. This difference in values is what leads to the 200,000 to 250,000 acre-foot range, the water consumption of 8.7 trillion Btu per day industry obviously being a fUnction of the mix of synthetic fuel technologies assumed. civ