TagSEPA(233)
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2026 05 26 rm 11b presentation SAMP ntp draft SEPA EIS page 03
A slide titled 'SAMP Near-Term Projects' presents an aerial map of Seattle-Tacoma International Airport annotated with planned near-term capital improvements. Labeled projects include a Second Terminal, North Gates, Busway and Stations, Roadway Improvements, Taxiway A/B and D Extensions, Hardstand areas (Central and North), Fuel Farm Expansion, ARFF Relocation, Runway Blast Pads, Westside Maintenance Campus, C4S Warehouse Redevelopment, Off-site Cargo, Airline Support, Highspeed Exit, and a Centralized Receiving and Distribution Facility. -
2026 05 26 rm 11b presentation SAMP ntp draft SEPA EIS page 12
A presentation slide titled 'Addressing Impacts' distinguishes between Mitigation (triggered when impacts exceed significance thresholds, e.g., surface transportation and level of service improvements) and Minimization Measures (existing SEA programs, regulatory and voluntary, including air quality and emission reduction programs, stormwater BMPs, Sustainable Evaluation Framework, and the Land Stewardship Plan). The 'SEA' abbreviation and subject matter suggest this is from a Seattle-Tacoma International Airport environmental or planning presentation, slide 12. -
2026 05 26 rm 11b presentation SAMP ntp draft SEPA EIS page 11
This presentation slide (page 11) outlines additional analyses conducted under the State Environmental Policy Act (SEPA) to complement a NEPA Environmental Assessment (EA). It lists required analyses including GHGs and Climate, Earth, Transportation, Housing, Plants, Animals, and Cumulative Impacts, as well as voluntary analyses covering Air Quality, Noise, Human Health, and Environmental Justice. -
2026 05 26 rm 11b presentation SAMP ntp draft SEPA EIS page 10
A presentation slide titled 'Surface Transportation Mitigation' describes mitigation measures identified for Category 1 and 2 intersections near Seattle-Tacoma International Airport by 2032, covering 10 Category #1 intersections requiring physical improvements and 16 Category #2 intersections, at an estimated cost of approximately $40 million. The slide includes a map showing study intersections across the Sea-Tac area including Burien, Normandy Park, Sea-Tac, Des Moines, Tukwila, and Renton jurisdictions. -
2026 05 26 rm 11b presentation SAMP ntp draft SEPA EIS page 09
This slide describes 18 conditions identified in the FAA Record of Decision that must be adhered to, covering five resource categories: Surface Transportation, Historical/Architectural/Archeological and Cultural Resources, Biological Resources, Water Resources, and Hazardous Materials/Pollution Prevention/Solid Waste. A footer note states that mitigation identified in the NEPA EA was carried forward into the Draft SEPA EIS. -
2026 05 26 rm 11b presentation SAMP ntp draft SEPA EIS page 08
This slide summarizes the findings of a Final NEPA Environmental Assessment, categorizing resource areas by impact level ranging from 'Not present' (Farmlands, Wild and Scenic Rivers) to 'Significant impacts requiring mitigation' (Surface Transportation). A footer note states that mitigation identified in the NEPA EA was carried forward into the Draft SEPA EIS, indicating this is part of a joint NEPA/SEPA review process likely related to Sea-Tac Airport or a similar major transportation project. -
2026-05-08Sustainable Airport Master Plan near-term projects environmental review – SEPA draft environmental impact statement and public comment period
The Port of Seattle released a Draft Environmental Impact Statement (DEIS) under the State Environmental Policy Act (SEPA) for the Sustainable Airport Master Plan Near-Term Projects at Sea-Tac Airport, finding that surface transportation is the only category with significant impacts requiring mitigation. The review examined sixteen environmental categories including noise, air quality, and community impacts, with a 60-day public comment period running from May 22 to July 21, 2026, including in-person meetings in SeaTac, Burien, Des Moines, and Federal Way. A final SEPA determination is expected by the end of 2026. -
SAMP Near-Term Projects SEPA Draft EIS Timeline and Next Steps
A project timeline slide showing the environmental review process for a Sea-Tac Airport project, currently at the Draft SEPA EIS Publication stage (5/22/26). Key milestones include the Final NEPA FEA & Decision (9/26/25), Draft SEPA EIS Agency & Public Review, Final SEPA EIS & SEPA Decision (Q4 2026), and Commission Action Required for NTP(s) approval in 2027. -
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. -
2026-05-01Appendix 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.