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<br />The 4-year second phase would include a randomized seeding program in <br />two subbasins to evaluate and quantify water supply increases and <br />extrapolate this information to the entire Basin. Concurrent studies <br />to improve project instrumentation, seeding modes and agents, would be <br />conducted in preparation for Basin-wide operations. Data required to <br />implement transfer of the technology to the other subbasins of the <br />Colorado River would be collected. <br /> <br />The advantages of this option are that it calls for the earliest <br />initiation of Basin-wide operations, it anticipates increased water <br />supply in two subbasins within 2 years, and it has the lowest total <br />cost of all the options. The disadvantages are that the scientific and <br />social acceptability of the results of the 6-year effort probably will <br />not be at a high enough level of confidence for those concerned with <br />issues of extra-area effects, water rights, and social and environmntal <br />effects to initiate a Basin-wide program. With only 2 years to prepare <br />for the demonstration phase, there is no opportunity to improve on <br />existing technology. Also, it may not be possible to complete the <br />needed environmental studies and impact statement in 2 years. This <br />option has the highest average annual costs. <br /> <br />C. Programmatic Alternatives <br /> <br />The Project Skywater Programmatic Final Environmental Statement was filed <br />with the Council on Environmental Quality, October 25, 1977. The State- <br />ment [2J was distributed to State clearinghouses; Federal, State, and <br />local agencies; universities and colleges; special interest organizations; <br />and the general public in the Colorado River Basin. Chapter 8 of the <br /> <br />8 <br />