PROJ02179

• Contract/PO #: 04000000014
• Contractor Name: Clear Creek Economic Development Corporation
• Contract Type: Grant
• Water District: 0
• Loan Projects - Doc Type: Feasibility Study

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ECONOMIC EVALUATION

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Project Capital Costs

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A Preliminary Engineer's Estimate of Probable Construction Cost was developed to provide budget level
costs for the reservoir project (Table 3). Costs include budget level c:osts for major components of the
project and include additional costs for contingencies (15%), engineering design and construction period
services, an allowance for permitting costs and for additional environmental testing and evaluation.
Costs are not included for land acquisition" or easements. The total cost as noted in Table 3 is
$1,648,713. Cost per gross acre-foot of storage is $14,988.

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A reservoir simulation was prepared for two four-year periods assuming that the reservoir was full at the
beginning of the period, that the reservoir would be emptied to meet demands equally each year, and that
the source of water would be only from the 200 I appropriation. The first simulation was for average
year conditions and the second simulation was for the driest year assuming 50% rainfall. With
consideration of evaporation from the reservoir surface, of the 110 acre-foot storage, approximately 79
acre-feet would be available for use during an average rainfall four-year period (Table 4) and 66 acre-feet
would be available for use during the driest four year period (Table 5).

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It should be noted that costs for enviromnental testing and evaluation are estimated and could vary
significantly depending on the extent oftesting necessary and results. Costs are not specifically included
for additional mitigation measmes if required to reduce risks associated with the tailings material.

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Operation and Maintenance

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Budgets will be required for operation and maintenance along with a determination of responsibilities for
operation. Routine operation and maintenance will be necessary for the reservoir and will include items
such as mowing, debris removal, repairs, and operation of control structures. Inspections and reporting
to the State Engineer's Office will also be necessary to comply with water rights requirements and dam
safety requirements.

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