TagSustainable Airport Master Plan(280)
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2026-05-22Appendix I: Natural Resources & Energy Supply — Bonneville Power Administration 2024–2028 Strategic Plan
The Bonneville Power Administration's 2024–2028 Strategic Plan outlines the agency's goals for delivering reliable, affordable electricity and high-voltage transmission across the Pacific Northwest. The plan focuses on workforce investment, updating power products and rate structures, expanding transmission infrastructure, and addressing growing risks such as drought conditions, extreme heat, and cybersecurity threats. Note: This document concerns regional energy supply policy and is not directly related to Sea-Tac Airport noise policy. -
2026-05-22SAMP – the unsustainable airport master plan
A advocacy flyer from Sea-Tac Noise.Info (stni.info/samp/) opposing the Sea-Tac Airport Sustainable Airport Master Plan (SAMP), characterizing it as the 'UnSustainable Airport Master Plan.' The flyer warns of one-third more flights, noise, and pollution with no mitigation or compensation, and announces a public comment period opening May 22, 2026. -
Sustainable Airport Master Plan executive summary Long-range vision
This is Figure 4-1 from the Seattle-Tacoma International Airport Sustainable Airport Master Plan Executive Summary (source: LeighFisher and Port of Seattle, 2016), depicting a color-coded aerial site plan of proposed long-range airport development including new terminals, maintenance facilities, cargo areas, support facilities, hardstands, pavements, and demolition zones across the airfield. -
2026-05-11Des Moines Airport Advisory Committee Meeting May 11, 2026
Call to Order Agenda Items Item 1: Approval of Minutes Motion: “I move to approve the minutes from the Airport Advisory Committee meeting held on April 13, 2026.” Item 2: Complaints/Communications Item 3: Sea-Tac Stakeholder Advisory Round Table (StART) Meeting Update Item 4: Sustainable Airport Master Plan (SAMP) Update Item 5: Airport Committee Workplan Amendment -
2026-05-11
Des Moines airport advisory committee agenda
Agenda for the Des Moines Airport Advisory Committee meeting covering approval of minutes, complaints/communications, StART meeting update, SAMP update, and workplan amendment discussion. Includes items about supporting city response to SAMP Draft EIS, public education efforts, and mitigation measures research. -
2026-05-11
Des Moines airport advisory committee agenda
Agenda for the Des Moines Airport Advisory Committee meeting covering approval of minutes, complaints/communications, StART meeting update, SAMP update, and workplan amendment discussion. Includes items about supporting city response to SAMP Draft EIS, public education efforts, and mitigation measures research. -
2026-05-01Appendix P: Mitigation and Minimization Measures: Seattle-Tacoma International Airport SEPA EIS for the Sustainable Airport Master Plan Near-Term Projects
This appendix outlines the traffic mitigation measures required for the Seattle-Tacoma International Airport Sustainable Airport Master Plan Near-Term Projects, as mandated by the FAA's Record of Decision and the Port of Seattle's State Environmental Policy Act Environmental Impact Statement. It details specific intersection improvements across multiple jurisdictions—including the City of SeaTac, City of Burien, City of Des Moines, and WSDOT—such as new traffic signals, roundabouts, and turn lane additions, along with proportionate-share cost contributions where full mitigation is not required. The measures are designed to address projected traffic impacts through 2037 and maintain acceptable levels of service at affected intersections near the airport. -
2026-05-01
Mitigation and Minimization Measures: Seattle-Tacoma International Airport SEPA EIS for the Sustainable Airport Master Plan Near-Term Projects
This appendix outlines the traffic mitigation measures required for the Seattle-Tacoma International Airport Sustainable Airport Master Plan Near-Term Projects, as mandated by the FAA's Record of Decision and the Port of Seattle's State Environmental Policy Act Environmental Impact Statement. It details specific intersection improvements across multiple jurisdictions—including the City of SeaTac, City of Burien, City of Des Moines, and WSDOT—such as new traffic signals, roundabouts, and turn lane additions, along with proportionate-share cost contributions where full mitigation is not required. The measures are designed to address projected traffic impacts through 2037 and maintain acceptable levels of service at affected intersections near the airport. -
2026-05-01Appendix Q: List of Preparers — SEPA EIS and NEPA EA for the Sustainable Airport Master Plan Near-Term Projects
This appendix lists the individuals and organizations responsible for preparing the environmental review documents for Seattle-Tacoma International Airport's Sustainable Airport Master Plan Near-Term Projects. It includes two tables: one covering contributors to the State Environmental Policy Act (SEPA) Environmental Impact Statement, and one listing those who prepared the National Environmental Policy Act (NEPA) Environmental Assessment. Key contributors include staff from the Port of Seattle, consulting firms such as Parametrix, Landrum & Brown, CDM Smith, Concord Engineering, and RS&H, covering areas such as air quality, noise, climate change, safety, and biological resources. -
2026-05-01Appendix L: Surface Transportation (NEPA/SEPA)
This report analyzes existing traffic conditions around Seattle-Tacoma International Airport as part of the Sustainable Airport Master Plan (SAMP) Near-Term Projects Environmental Review. It examines 108 intersections—including signalized, stop-controlled, and uncontrolled locations—along key travel routes connecting the airport to surrounding communities, focusing on weekday PM peak hour traffic volumes. The study also includes freeway analysis of SR 518 and I-5 ramps and segments at the request of WSDOT.