Stmpu 1997 05 Fseis Appendix F

response to comments concerning noise issues, aircraft fleet mix has a notable effect on the resulting environmental impacts. Thus, evaluation of impacts associated with a demand level would require the evaluation of the fleet mix associated with that demand. While current regulations mandate the phase..out of Stage 2 aircraft, little is precisely known about which specific aircraft will be flying in years beyond 2010. Estimates of fleet are possible, but their impact on the resulting environmental condition description are significant, and a slight change aom one aircraft type to another could have significant ramifications on noise and air pollution conditions. Because of this variability, the resulting impact analysis would have little meaning. As a result, Appendix D achieves an objective of anaying the possible impacts that might occur in time frames beyond year 2010. See response to comment 2.-Q and 2-J. One commentor indicated that an EIS is required to use worst.-case data, and thus should have used the FAA TAF. NEP A and SEPA do not require the use of worst-case conditions. However, in certain conditions, agencies encourage the use of worst case conditions, such as the air quality analysis. As a result, certain worst-case conditions were used in assessing the impacts of the Port’s new forecast. The Draft Supplemental EIS acknowledges that Master Plans are typically undertaken every 7-.10 years, or for airports experiencing unforeseen growth, plans are undertaken every 3-5 years. Thus, it is anticipated that the Port would likely undertake a new Master Plan Update after…

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Call to order – Roll Call – Quorum Established – Land Acknowledgement We would like to acknowledge that our Agency operates in four present-day counties, which are the traditional lands of the Coast Salish people, past and present. This acknowledgement does not take the place of authentic relationships with indigenous communities in our jurisdiction and [...]