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Executiue Summary <br />• Indirect Workforce: Workers employed in services, trade, and other sectors whose jobs are <br />supported by expenditures from energy sector firms and/or direct workforce employees and <br />their households. <br />• Energy-Related Population: The combination of the direct workforce, the indirect <br />workforce, and their families. The energy-related population and water demand proj ections <br />described later in this section are incremental estimates of the total population and water <br />demands specifically resulting from the development and production of each energy <br />resource. For the purposes of this study, a unit value of 200 gallons per capita per day (gpcd) <br />was used to estimate the indirect water demands and reflects the total water needs associated <br />with the energy-related population, including their domestic use plus their per-capita share of <br />the additional commercial and governmental water use arising from the energy-related <br />. <br />popu atlon. <br />Under the assumptions developed for this study, the indirect water demands for natural gas and <br />coal production are relatively stable for the three production scenarios and three planning <br />horizons3. The indirect demands for oil shale show an increase under the high production <br />scenarios for both the mid- and long-term planning horizons, which, as discussed below, is <br />primarily attributable to the thermoelectric power generation requirements. Under the mid-term <br />planning horizon, the indirect water demand for natural gas production is approximately <br />10,400 acre-feet per year (Figure ES-3, Summary of Indirect ~Uater Demands). For comparison <br />purposes, the average annual raw water supply delivered to the City of Grand Junction from <br />2005 through 2007 was 7,268 acre-feet. <br />Thermoelectric Power Demands <br />Each energy industry requires electric power to supply its production technologies. For the <br />purposes of estimating water demands, it was assumed that thermoelectric power generation <br />would accommodate this need. Thermoelectric power generation is a water-intensive process, <br />and the amount of water needed to generate the electric power depends on the type of power <br />generation facility. There are three primary energy resources that supply thermoelectric power <br />~, <br />' The values depicted here also include the indirect demands that may occur as a result of additional population <br />growth needed to support thermoelectric power generation. <br />~ ES-7 <br />