TagSEPA(293)
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2026-05-22Appendix O: Agency & Public Engagement
Appendix O is a placeholder section titled 'Agency & Public Engagement,' reserved for public comment and public engagement information that will be included in the final SEPA (State Environmental Policy Act) Environmental Impact Statement. No content has been populated in this draft version. The completed section will document how agencies and the public were involved in the environmental review process. -
2026-05-22
Appendix O: Agency & Public Engagement
Appendix O is a placeholder section titled 'Agency & Public Engagement,' reserved for public comment and public engagement information that will be included in the final SEPA (State Environmental Policy Act) Environmental Impact Statement. No content has been populated in this draft version. The completed section will document how agencies and the public were involved in the environmental review process. -
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. -
2026-05-22
Appendix 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 Near-Term Projects Draft EIS: Chapter 1, Introduction and Purpose & Need
The Port of Seattle is preparing an Environmental Impact Statement (EIS) under Washington State's Environmental Policy Act (SEPA) for 31 near-term construction and improvement projects at Seattle-Tacoma International Airport (SEA). These projects, drawn from the airport's 2018 Sustainable Airport Master Plan, aim to improve passenger facilities, safety, efficiency, and airport access ahead of a projected 2032 completion date. The review follows a completed federal environmental assessment and addresses the region's growing air travel demand while evaluating potential environmental impacts and mitigation measures. -
2026-05-22
SAMP Near-Term Projects Draft EIS: Chapter 1, Introduction and Purpose & Need
Draft SEPA Environmental Impact Statement Chapter 1 for Seattle-Tacoma International Airport (Sea-Tac Airport) Sustainable Airport Master Plan (SAMP) Near-Term Projects (NTPs), published May 22, 2026 by the Port of Seattle. Covers purpose and need, background planning process, 31 NTPs, Long-Term Vision, environmental review timeline including NEPA EA (Final EA September 2025, FONSI/ROD September 24, 2025), -
2026 05 26 rm 11b presentation SAMP ntp draft SEPA EIS page 16
A presentation slide titled 'Air Quality Impact Reductions' outlining mitigation strategies for construction (implementing Best Management Practices including equipment maintenance, minimizing idling, and equipment specifications) and operations (pre-conditioned air, electric ground support equipment, renewable natural gas, alternative fuel vehicles, and public alternative transportation strategies). The slide is numbered 16, suggesting it is part of a larger environmental impact or planning presentation, potentially related to airport development. -
2026 05 26 rm 11b presentation SAMP ntp draft SEPA EIS page 15
Slide 15 from a Sea-Tac Airport environmental review presentation summarizes a Human Health Risk Assessment focused on toxic air pollutant exposure and cancer risks. The findings state that emissions would not exceed health-based air quality standards, accompanied by an aerial map showing modeled pollutant dispersion contours overlaid on Seattle-Tacoma International Airport and surrounding communities. -
2026 05 26 rm 11b presentation SAMP ntp draft SEPA EIS page 14
Presentation slide titled 'Air Quality Updates' describing methodology and findings for NEPA emissions inventories and SEPA analysis covering construction and operations phases. Findings note temporary construction-related emissions during the buildout period and small long-term increases in operational emissions, characterized as limited impacts consistent with the NEPA EA; accompanied by a map showing Discrete (Sensitive), Fenceline, and Radial Receptors along what appears to be a corridor in the Seattle/Sea-Tac area. -
2026 05 26 rm 11b presentation SAMP ntp draft SEPA EIS page 13
A presentation slide titled 'Draft SEPA Environmental Impact Statement' categorizes environmental impact areas into four tiers: no impacts (e.g., Historical/Cultural Resources, Earth, Housing, Recreation); limited impacts that are not significant (e.g., Air Quality, Noise, Climate); limited impacts not significant due to regulatory requirements (Plants and Animals, Water Resources, Hazardous Materials/Solid Waste/Spill Prevention); and significant impacts triggering mitigation (Surface Transportation). A footer note states that mitigation identified in the NEPA EA was carried forward into the Draft SEPA EIS.