Colorado - Upper CO River Endangered Fish Recovery Program_Statement of Work

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the 10825 Project will be provided to Grand River from the chair of each participating Basin Roundtable as a requirement for a study grant that will be secured from the Colorado Water Conservation Board. 1.4 Phase 2 Studv Obiectives The objective of the Phase 2 study is to investigate alternatives that can provide the 10,825 Water to the 15- Mile Reach on a permanent basis. The study will provide a preliminary assessment of structural and non- structural 10825 Alternatives that is consistent with the intention of the Steering Committee to use this report as a preliminary step towards the requirements of the National Environmental Policy Act (NEPA.) Additionally, it was understood that the requirements of Section 404(b)(1) Guidelines under the Clean Water Act were to be evaluated for each of the alternatives. GEI advises that this level of detail for all of the alternatives will entail substantially greater engineering design work than is currently envisioned by the Steering Committee during Phase 2 of the study. It is proposed that engineering design studies be completed at a Section 404(b)(1) level only for a limited number of alternatives selected specifically for review in a subsequent phase of work. In the Phase 2 study, the Consultant will develop and evaluate alternatives that meet the following project obj ectives: • Provide a permanent supply of 10,825 acre-feet of water annually to meet the West and East Slope requirements for the Colorado River Recovery Program. The water must be provided to the 15-Mile Reach, in all years, during low flow periods in the summer and fall months. � Do not reduce the water supply or the water yield that is available to any West Slope or East Slope water user. Specifically, the Phase 2 Study is intended to identify, in an un-biased manner, the strengths and weaknesses of a reasonable range of 10825 Alternatives for consideration by the Steering Committee group. The study results will include information to facilitate the selection of a preferred alternative by the Project Stakeholders. The Phase 2 Study will also present technical information that can be integrated into a future NEPA process. 1.5 Evaluation Criteria The alternatives will be assessed in the context of evaluation criteria. The evaluation criteria will be selected by the Steering Committee, with guidance from the contractor. It is anticipated the evaluation criteria will include, but not necessarily be limited to, the following: • Constructability • Time to Implementation • Ease of Permitting 10825 Phase 2 Scope of Work Revised May 25, 2007 per CWCB request Page 3