HOK Appendix

Prepared under a grant from the State of Washingon by: Hellmuth, Obata + Kassabaum, Inc. Dallas, Texas Raytheon Infrastruction Services, Inc. Denver and Philadelphia APPENDIX A EQUITY ISSUES AND SOCIO-ECONOMIC IMPACTS A.01 - INTRODUCTION Equity issues related to the geographic distribution of Seattle-Tacoma International Airport's benefits and costs underpin the requirement for socioeconomic impact mitigation. Although a source of contention, it is arguable that socioeconomic benefits such as increased economic activity (jobs, income, and output) and social/cultural events (family visits, traveling performance companies and ease of recreational travel) generated by commercial aviation services taking place at Sea-Tac International Airport exceed the Airport's socioeconomic costs (noise, traffic congestion, a degraded environment for human habitat, adversely affected educational and social services, and a reduced tax base). However, the benefits are distributed over western Washington and the Puget Sound Region while the costs are localized in a small number of communities immediately surrounding the Airport. Consequently, there is a need for mitigation that redirects some of the Airport's benefits back to the communities that disproportionately bear its costs. Appendix A looks at the geographic area adversely affected by Sea-Tac International Airport's impacts and compares it to the places of origin of persons initiating commercial air service travel at Sea-Tac International Airport. It also analyses the Airport's economic benefits and how they affect the five impacted communities that are the focus of this study. The data base for the origin of enplaning passengers at Sea-Tac International Airport comes from a 1991 Origin/ Destination (O/D)…
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