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<br />P~oject investment costs for a range of possible reservoir sizes are shown <br />in Table 5.1. Corresponding values of firm yield for these reservoir sizes are <br />shown in Table 5.2. Project investment costs with highway relocation Alternatives <br />1, 2, and 3 range from a low of $506 million with the smallest reservoir to a <br />maximum of $692 million with the largest reservoir. With highway relocation <br />A lternat i ves 4, 5, and 6, project investment costs range from a low of $328 <br />million with the smallest reservoir to a high of $485 million with the largest <br />reservoir. <br /> <br />"I <br />, <br /> <br />Based on the investment costs in Table 5.2, the unit cost of firm yield for <br />each project combination is shown in the same table. These unit costs versus <br />reservoir capacity are also shown in Figure 5.1. Unit costs for projects <br />including highway relocation Alternatives 1, 2, and 3 range from a low of <br />$914/af/year to a high of $2,400/af/year. With highway Alternatives 4, 5, and <br />6, unit costs range from a low of $630/af/year to a high of $1,640/af/year. The <br />minimum unit cost of $630/af/year is for a project with a 189,000 af reservoir <br />in combination with highway relocation Alternative 6 and water supply scenario <br />BC (the basin combined scenario). This project would have a firm yield of 61,000 <br />af/yr and an investment cost of $447 million. From Table 5.2, it can be seen that <br />the projects having the minimum unit cost of firm yield are those which: <br />(1) provide the highest firm yield, and (2) use the largest usable reservoir <br />capacity which is required for a given water supply scenario. <br /> <br />The cost of highway relocation is a significant part of the investment cost. <br />Investment cost just for highway relocation ranges from a minimum of $108 million <br />for relocation Alternative 6 to a maximum of $354 million for Alternative 2. <br /> <br />,--. <br /> <br />,--. <br /> <br />5.5 POTENTIAL PROJECT BENEFITS <br />The proposed Clear Creek Project would be a multipurpose project with <br />benefits to both the project proponents and the regional economy. These benefits, <br />in addition to water supply, may include the following: <br /> <br />\ <br /> <br />5-3 <br /> <br />~ <br />, <br />I <br />