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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CONCLUSIONS AND RECOMMENDATIONS

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Conclusions

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Based on the information reviewed and developed as pmi of this feasibility study, site characteristics of
the Ball Placer site are generally suitable for construction of a water storage reservoir. An unknown
degree of risk is associated with gold mining tailings present at the site.

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Alternatives with respect to the environmental risks are to:
Proceed with the project with an understanding and acceptance ofthe risks.
Provide additional mitigation measures such as a double liner or other measures that will
result in a higher construction cost but will lower the risk.
Remove the potentially hazardous material from the site at a higher construction cost
and eliminate the risk.

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Recommendations

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In the event that the proposed reservoir site is selected for further development and construction of a
storage reservoir, additional environmental study should be conducted prior to the final design process to
better define the risks involved with the tailings material. Addressing the issue first would allow review
of reasonable design modifications that could mitigate the risks at a more reasonable cost. In the event
that significant risks are apparent, the enviromnental and cost impacts can be determined and then a
decision to move forward with the project can be reevaluated in light ofthe additional infonnation.

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