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3.2.7 Evaluation of :Prelimiruu~y Alternatives The preliminary alternativl~s can now be evaluated. The evaluations may include the following factors (see Appendix B for a discussion of the use of evaluation factors): a. Project yields or outputs, b. Project costs including capital costs, annual costs and cost per unit of output, c. Impacts on the man-made environment, the natural environment and the existing social structure, d. Such preliminary financial evaluations as may be appropriate for a reconnaissance-level study, e. Institutional considerations for prcject implementaLtiotl, f. Any special technical problems which should be considered. The type and extent of evaluations to be performed should be developed in consultation with the CWCB staff. Reconnaissance-level evaluations are performed at a preliminary level of detail, generally with a minimal amount of field work:. It is important then to recognize that, in reconnaissance planning, the differences between alternatives may be more significant than the absolute results of the evaluations. Thus, the difference in the costs of two alternatives may be more rdevant to a decision than the individual cost estimates. 3.2.8 Review and Screening of Alternatives Once the evaluations have been completed, the next stJ~p should be a review of the preliminary alternatives by the study advisory group arid the public. The screening process may involve the elimination of :;ome alternative:s, or it may result in new or revised alternatives which in turn must be evaluated before a recommended plan or set of final alternatives can be selected. 3.2.9 Study Report The written product of the study is a final report which describes the study process and the analyses performed. It is important that the report be more than a technical document. It should include a history of the study with a record of major issues, meetings, and of decisions made at each point in the process as well as the [mal study recommendations. 18