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the way for acceptance and, more important, it will <br />permit vital input from organized interests which will <br />lead to the evolution of a well -integrated plan. <br />Effective coordination between members of the <br />planning teams is also essential to the development of <br />a successful master plan. A balanced effort is not <br />easy to achieve because of the many disciplines in- <br />volved in the plan's preparation. For Large projects, <br />input may be required from economists; financiers; <br />scientists; architects; civil, mechanical, electrical, and <br />traffic engineers; pilots; air traffic controllers; airline <br />and concessionaire advisers; and airport managers. <br />And to put the airport in its proper perspective, the <br />roles of the environmentalist, ecologist, and urban <br />planner must not be overlooked. <br />This is why the role of the coordinator of the master <br />plan effort is so important. He must keep the en- <br />thusiasm of his advisers in check in order to balance <br />the study efforts and costs of various master plan <br />elements. If he is successful, he will develop a saleable <br />master plan which will lead to the construction of a <br />functional airport that blends pleasantly into the en- <br />vironment. <br />Coordination efforts required for development of <br />the master plan will not be discussed in further detail <br />in this introduction. Rather, they are elaborated on <br />for each stage of development of the master plan in <br />the chapters which follow. <br />5. Master Plan Phases and Elements. Plan- <br />ning efforts required for proper development of an <br />airport vary with the size of the area or community <br />which the airport is to serve and with the complexity <br />of the airport for which a master plan is to be estab- <br />lished. The phases and elements of study and develop- <br />ment which may be included in the master plan effort, <br />whether in toto or in part, are identified below. The <br />extent of their inclusion depends on the size and status <br />of the airport for which the master plan is to be pre- <br />pared. The magnitude of development of the elements <br />will depend on the size of the community the airport <br />is to serve and on information which may be available <br />from earlier planning efforts, such as State, regional, <br />or metropolitan area airport system plans. <br />a. Phase I, Airport Requirements. <br />(1) Inventory. The initial step in the prepara- <br />tion of master plans is the collection of all <br />types of data pertaining to the area which <br />the airport is to serve. This includes <br />inventory of existing airport facilities, area <br />planning efforts which may affect the <br />4 <br />master plan, and historical information <br />related to their development. <br />(2) Forecasts of Aviation Demand. This ele- <br />ment of the master plan should provide <br />short, intermediate, and long-range fore- <br />casts (approximately 5, 10, and 20 years) <br />of air traffic including based aircraft, air- <br />craft mix, aircraft operations, and enplaned <br />passenger, air cargo, and airport access <br />data. Aviation demand forecasts will be <br />based on social, environmental, economic, <br />and technical factors. It should be kept <br />in mind that 20-year forecasts will be very <br />approximate in nature. <br />Demand/Capacity Analysis. Demand/ ca- <br />pacity analysis will provide a basis for <br />determination of facility requirements and <br />feasibility. It should include cost benefit <br />analysis. Demand/capacity analysis should <br />be applied to aircraft operations versus <br />airfield improvements; to passenger en- <br />planements versus terminal building im- <br />provements; to airport access traffic versus <br />access roads and rapid transit facilities; <br />and to other improvements as may be <br />appropriate. <br />(4) Facility Requirement Determination. This <br />element of the airport master plan pro- <br />vides for the establishment of a list of <br />requirements for items such as the length, <br />strength, and number of runways; number <br />of gates; areas of aprons; square footage <br />of terminal buildings and cargo buildings; <br />number of public and employee parking <br />spaces; types of airport access roads and <br />rapid transit facilities; and the overall <br />land area required for the airport. The <br />list of facility requirements should not <br />delve into matters of feasibility, site selec- <br />tion, or design concepts. The list will be <br />used as a basis for making these studies. <br />Environmental Study. Environmental fac- <br />tors should be carefully considered in the <br />development of an airport master plan, <br />both in the site selection process and in <br />the design of the airport. Environmental <br />studies should be made by qualified ex- <br />perts. The results of the studies should <br />be incorporated into the development of <br />the master plan to insure that the airport <br />will be compatible with the environment. <br />(3) <br />(5) <br />