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-- 3331 r' ". ...... ............... ." . "-"". .. ..........,........ ...... .... ... .... .. ...., -........ .. . . ....... .. ....... .. . .." ....., . ... .....-::.........::.:........ . ....... .... ....,....:.:....-.....,.:,..:... ........ 0"" ... . .. ..............i...(.........S.....AiE......ISi<iM.............................'...i~..............i .....................................~..iA.......................'tiiO............'.............., . ... ...... V'" . ANAU'EMElli.1Tl;~nt1MEl" .. RK .:".~':.;.:(;:)}.<;;.;::..:.; .:~::::.::;::";:::.::..::.::.....:?::..::::":..: .::.:.;" :::"':':::":":';":::::':":':::"':":'...:..:..:'.:::.+~:~-;::(.:":.:::.: .::.:.::".:,:.:. .: :.:/": :.:"::{::. .;:"::: ." :.:... .:: .." :::::. .....:.:...;...:....::::..:,.... ................-...... This section includes a proposed method for ranking EIS alternatives and includes an example of this method, Other EIS planning considerations are also provided for additional information. 5.1 PROPOSED METHODOLOGY FOR COMPARING AND RANKING E1S ALTERNATIVES The evaluation of alternatives in the EIS process requires a decision framework that can objectively compare the alternatives through a systematic evaluation of a large array of attributes, Decision support systems (DSS) are a well recognized means of accomplishing this task, While it may be recognized by several names. a DSS essentially consists of a participatory polling (group-based decision) process developed by the Rand Corporation after World War" for use in making strategic military decisions [Kappus. 1994], Over the past 20 years, the process has been refined to apply to decisions concerning siting studies. such as the current effort by the GVID and WWDC. The development of a DSS requires several steps, First is the development of a "Hierarchy of Planning Values", The hierarchy takes the form of a decision tree and consists of several levels of values such as goals, subgoals, objectives and finally criteria, Planning values represent issues that are judged to be important to the decision making process for a particular project. The usefulness of the hierarchy derives from the observation that goals can be set and analyzed in such a manner that the essential factors contributing to their achievement can be identified and defined, If necessary. these contributing factors can be expressed in terms of intermediate goals that can be similarly analyzed, The process of subdividing intermediate goals into their component elements continues until a set of fundamental decision criteria is identified, This process provides a complete set of criteria that are consistent with, and are derived from overall project policies and goals, the scope of the project, and the characteristics of the environment in which the project is located, Structuring the hierarchy of project values is largely judgmental. It requires an orderly, interactive examination of numerous project-related factors by an interdisciplinary group of individuals who are knowledgeable about the goals and purposes of the project being studied, as weIl as the local setting, The output of this effort is a set of pertinent project objectives and explicit criteria that represent the key decision factors that will be used to evaluate the various alternative solutions to meet the project goals and objectives, Once the hierarchy is developed, preference relationships (utility functions) are developed for each of its criteria, The development of preference relationships requires several steps. the first of which is the identification of the "measures" of the criteria in terms of some definable unit such as dollars, acres, linear feet. etc, Next a common preference rating scale 94071 \REPOR1\TEXT VI 5-1