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Ms. Hosterman supported Mayor Pico and his recommendations. She was surprised that Livermore had not responded to two of the letters that Mayor Pico had sent addressing the Council's concerns as it related to the expansion of the airport. She believed it was important to note that there will be an increase in the annual number of flights fi.om 257,000 plus to 370,00 by year 2020; an increase in jet flights from 2,220, based on year 2001, to lg,500 by year 2090; an increase in the number of planes based at the airport from 594 to 898 by year 2020; an increase in jets based at the airport from 2, based on year 2001, to 30 by year 2020; an increase in flight training, including jet training; and an increase in the number of charter flights at the airport. While she realized that the airport is in the City of Livermore, the impacts are regional, and because of the regional impacts, this matter needs to be addressed. Ms. Ayala mentioned that this matter was discussed at the Livermore/Pleasanton Liaison Committee. She believed this discussion needed to go beyond the Liaison Committee. She believed the City of Dublin had conducted some type of noise study. Mr. Brozosky said that the City of Dublin conducted an acoustical study. Ms. McKeehan said that the City of Pleasanton also conducted an acoustical study some time ago. Ms. Ayala asked if Council had seen the latest acoustical study?. Mr. Swirl believed that the City of Dublin had an acoustical firm look at the studies that the City of Livermore relied upon in its EIR. The City of Dublin took issue with the type of analysis that was done. He did not believe the City of Dublin actually conducted a noise monitoring study. Ms. Ayala asked staffto find out if the City of Dublin had conducted an updated acoustical study. She would like the School Dislrict included in the discussions regarding the extension of the airport, as elementary schools within the proposed expansion area will be affected. She believed the staffreport indicated that the City's Specific Plan for the east side of town was put together under the present airport plan. She asked if this was true, and would the City of Pleasanton's plan looked different if the new airport expansion plan was in place? Mr. Swirl was not sure as the City of Livermore's study was based on its future plans, which he believed was lacking reliable information. He said that the City of Pleasanton's noise mitigation that it incorporated into the Stoneridge Drive Specific Plan was based on single event noise, primarily from the noisiest jet that was using and expecting to use the airport in the future. With the change in operations, there are different types of jets and different flight patterns, so it is not clear whether the mitigation that the City of Pleasanton built into those houses that are closest to the airport are still effective. All the City of Livermore did was conduct a Community Noise Equivalent Level (CNEL) averaging of all the noise levels over a 24-hour period of time. The CNEL indicated that this would not affect Pleasanton residents and, therefore, there is no impact. Pleasanton City Council 14 04/06/04 Minutes