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E~nbit IV 9 illustrates the development proposed is Alternative 6. 1. System Diversion A new general aviation airport in Search Area "A" could attract an estimated 191 based aircraft from AnokaCounty-Blaine Airport. This number of based aircraft was derived from AnokaCounty-Blaine diverting aircraft until demand is reduced to 80 percent of its operational capacity. As in all diversion scenarios, 55 single-and light twin-engine aircraft would be diverted from St. Paul Downtown to Lake Elmo. While a new airport could attract a number of aircraft and operations from Crystal Airport, Crystal's demand is not projected to reach 80 percent of ASV by the end of the planning period. Therefore, significant diversion from Crystal is unlikely unless the new facility is located in close proximity to the existing Crystal site. Also, some diversion from Flying Cloud to a new airport may occur; however, most of Search Area "A" is located beyond Flying Cloud's 15-mile limit for attracting diverted aircraft. Significant diversion from Flyittg Cloud to anew airport is not expected. • To date, no one specific area has been selected for the location of a new general aviation airport is Search Area "A", nor has a public sponsor been identified for this facility. 2. Operational Demand A new airport, operating at 80 percent of an estimated 230,000 ASV, would be able to accommodate approximately 264 based aircraft, assuming an OPBA of 625. This number of OPBA represents an average of the OPBAs at neighboring reliever airports. With diversion from Anoka County Blaine, the new airport could reach 56 percent of its operational capacity by the end of the planning period. This assumes 191 aircraft would be based at the new ~~ With Alternative 6, all relievers would operate at approximately 80 percent or less of their operational capacity. The projected number of annual operations as a percentage of ASV for each of the relievers in Alternative 6 is presented in Table N-9 and Exhibit N-7. u N-36