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<br />'; <br /> <br />:j''',.-e <br />, <br /> <br />,~ <br /> <br />0026' <br /> <br />1.5 <br /> <br />\. .' <br /> <br />. <br /> <br />1.2 Scope of Issues to be Addressed <br /> <br /> <br />This Supplement culminates a long period of analysis by the Bureau and <br /> <br /> <br />its contractors. The process started when the Bureau determined that addi- <br /> <br />tional water sales from Ruedi Reservoir (one round of water sales occurred May <br /> <br />13, 1982) could have significant environmental impacts because of the magni- <br /> <br /> <br />tude of the water sales. The Bureau and its contractors prepared an environ- <br /> <br /> <br />mental assessment (EA) of 11 alternative water sale scenarios. <br /> <br /> <br />The scope of the EA was determined from several processes, the most <br /> <br /> <br />important of which were communications between the Bureau and prospective <br /> <br /> <br />customers for Ruedi water, and public seaping sessions. The communications <br /> <br />and the seaping sessions raised questions and identified ,issues that needed to <br /> <br />be addressed before the Bureau could define the procedures for future water <br /> <br />sales. <br /> <br />(Details of the scoping process are presented in Chapter VI). <br /> <br />Work in several disciplinary areas was considered necessary to address <br /> <br /> <br />the issues and concerns_ The subject areas included in the EA were hydrology, <br /> <br />aquatic biology, terrestrial biology, threatened and endangered species, and <br /> <br /> <br />recreation. The major issues addressed were as follows: <br /> <br />1. Physical and chemical effects on fisheries in the reservoir and <br />streams. <br /> <br />2. Salinity effects in the Colorado River. <br /> <br />3. Potential increases in scouring and erosion of stream banks. <br /> <br />4. Effects on threatened and endangered species. <br /> <br />5. Effects on terrestrial wildlife and vegetation. <br /> <br />6. Effects on area recreation usage. <br /> <br />7. Degree of reservoir drawdown and minimum pool level. <br /> <br />8. Use of winter sales of water to preserve a high summer reservoir <br />level. <br /> <br />9. Capability to deliver water during the winter months. <br /> <br />10. Compliance with authorizing legislation. <br />