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CWCB Loan Narrative Overview 13 <br />approval as required. Based on the results of the two prior tasks, detailed designs, plans and specifications would be developed for lowering the existing spillway. A detailed dam break model and dam break inundation map would be developed to verify the dam hazard class based on the reduced reservoir storage level. GEI has already prepared an IDA analysis which goes into fairly significant detail on the consequences of a new dam failure for the RCC option they evaluated. Much of this work could also be used in the first phase rehabilitation project to evaluate the failure consequences of the smaller restricted storage dam. At some point this information would be used in the updated Emergency Action Plan (EAP). Leakage and operational reliability of the two existing and operable 30-inch diameter outlet valves has been an ongoing problem. These valves and operators would be inspected and evaluated. If it is determined that they can safely function for a couple of more years while plans are being made for the second phase dam, they may be allowed to remain in service if the Dam Safety branch is in concurrence. If they are deemed unsafe, then repair may be required resulting in replacement with new valves and operators. An instrumentation and monitoring program would be developed and implemented for the first phase which would allow monitoring of the old dams performance while plans for rehabilitation or replacement are being implemented. A more comprehensive real time monitoring plan would be incorporated into the second phase work. An updated Emergency Action Plan will be developed around the newly configured dam and reservoir for prudent use during the development of any possible emergent condition. The SEO would determine the extent of a plan needed for Phase I. It is recommended that the EAP be minimized until the Phase II work concept is finalized and accepted by the State. RIGHT-OF-WAY No additional land or right-of-way will be required for the selected alternative. COST ESTIMATE Please refer to Appendix A for the detailed cost estimate. PERMITTING In the Phase I, no work is envisioned in the stream channel below the dam and no work which would affect water quality is anticipated. Based on this preliminary analysis, there does not appear to be any federal nexus requiring permits. No county building or special use permits are required. SEO approval of the designs, plans and specifications is the only identified permitting process. Work done in the Phase II may require additional permitting, but the scope and limits have yet to be determined. IMPACTS The positive impacts of the proposed project include maintaining valuable reservoir storage for viable agribusiness and wildlife habitat. The only negative impacts result from not going forward with the project and results in loss of the valuable water resource and degradation of wildlife and aquatic stream habitat.