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AIRPORT DEVELOPMENT ALTERNATIVES <br />Certain assumptions were made during the alternative concept development process to ensure every <br />option was evaluated consistently. These assumptions include the following: <br />» Provide 800 feet of separation between parallel concourses. <br />» Provide dual-loaded concourses with dimensions assumed at ultimate size (900 feet x 100 feet). <br />» Allow 250 feet of space from building face to VSR lanes. This allows adequate room for jet <br />bridges, ground service equipment, ADG III aircraft parking, and exterior VSR lanes, with a suitable <br />degree of buffer space. <br />» Dual ADG III/TDG 5 taxi lanes with 300 foot separation between VSR lanes. <br />» Building Restriction Lines (BRLs) at the 50 foot contour and taxiway object free areas (TOFA) were <br />identified and analyzed as limiting factors for each concept. <br />» General degree of enabling project costs and potential for environmental assessments are <br />acknowledged at this stage of conceptual alternatives development but not analyzed to a rough <br />order-of-magnitude. <br />» Critical aircraft shown on each option is the B737-900W. <br />EUGENE AIRPORT MASTER PLAN 4-26 <br /> <br />