TagSEPA(232)

This technical report, prepared by Landrum & Brown for the Port of Seattle in January 2024, assesses hazardous materials, solid waste, and pollution prevention concerns related to near-term construction projects under the Sustainable Airport Master Plan at Seattle-Tacoma International Airport. It includes investigations of contaminated fuel farm sites, environmental baseline studies, and regulated building materials surveys (such as asbestos and lead) for several airport facilities slated for redevelopment. The report compiles findings and regulatory correspondence from Washington State Department of Ecology to guide safe handling and cleanup of hazardous materials during planned airport improvements.

This Land Use Technical Report, prepared for the Port of Seattle's Sustainable Airport Master Plan Near-Term Projects, examines how proposed improvements at Seattle-Tacoma International Airport align with land use plans and regulations in surrounding communities including SeaTac, Des Moines, Burien, and Tukwila. It reviews existing and planned land uses, relevant local and regional planning documents, and assesses potential land use impacts under three alternatives: No Action, Proposed Action, and a Hybrid Terminal Option. The report was originally prepared in January 2024 by Landrum & Brown and later updated in April 2026 by Parametrix for the SEPA Environmental Impact Statement.

Washington Senate Bill 5990, introduced in the 2024 legislative session, aims to reduce environmental health disparities by requiring detailed impact assessments before approving projects in communities already burdened by pollution. The bill defines key terms such as 'disproportionate impact' and 'environmental justice impact statement,' and establishes a framework for evaluating whether new or expanded projects would worsen cumulative health and environmental stressors in overburdened communities. Note: this bill addresses broad environmental justice policy statewide and does not specifically address Sea-Tac Airport noise or aviation-related impacts.

The Des Moines, WA City Council considered a staff recommendation to transfer review of the Des Moines Creek Business Park West Master Plan (LUA2022-0044) from the Council to the city's Hearing Examiner. The proposed 30-acre development near South 216th Street would include a 402,380-square-foot industrial building and requires complex environmental review, including a variance to fill ravine sidewalls and potentially realign a stream. Due to the technical complexity of the land use and environmental issues involved, staff and the City Attorney recommended consolidating the Master Plan review with the required variance before the Hearing Examiner.

This technical memorandum, prepared by Leigh Fisher for the Port of Seattle in September 2023, presents an updated aviation activity forecast for Seattle-Tacoma International Airport. It includes Constrained Operating Growth Scenarios (COGS), FAA approval of the forecast update, and airside modeling documentation used to support environmental review. The forecast and operational assumptions outlined in this document serve as the foundation for planning future airport capacity and assessing potential noise and environmental impacts.

This appendix from the Puget Sound Regional Council's long-range transportation plan, Destination 2030, outlines the process for amending the plan and making major capacity investment decisions. It explains that the plan must be reviewed every three years under federal law and every two years under Washington State law, with air quality conformity statements required when amendments are made. The document also provides guidance on evaluating transportation corridor investments, assessing benefits and costs, and classifying projects as either 'Candidate' or 'Approved' for implementation.

This June 2022 presentation by Des Moines Chief Strategic Officer Susan Cezar provides an update on the environmental review of Near Term Projects under the Port of Seattle's Sustainable Airport Master Plan (SAMP). It outlines the history of the review process dating back to 2015, including a multi-city inter-local agreement between Des Moines, Burien, Normandy Park, and SeaTac to coordinate responses to the Port's environmental documents. City staff continue to monitor the Port's compliance with federal (NEPA) and state (SEPA) environmental requirements as airport capital projects move forward.

This document is Appendix G of the Seattle-Tacoma International Airport Sustainable Airport Master Plan (SAMP), covering a cultural resources survey of near-term airport projects in King County. It outlines coordination between the FAA and the Washington State Department of Archaeology and Historic Preservation (DAHP), which ultimately concurred with findings of No Adverse Effect on historic resources. The appendix also documents outreach to ten Native American tribes as part of the federally required Section 106 review process.

This June 2021 amendment to a consultant contract extends an agreement between the City of Des Moines, WA and two consulting firms—Primacy Strategy Group, LLC and ABCx2, LLC—through December 31, 2023, with a maximum compensation of $275,000. The contract, originally signed in 2018 and administered by Des Moines on behalf of a partnership with the cities of Burien, SeaTac, and Normandy Park, relates to advocacy and consulting work connected to Sea-Tac Airport's environmental review process (SAMP SEPA/NEPA). Consulting services were suspended as of January 1, 2020, pending the public release of SAMP Environmental Review documents, with any interim work to be authorized by the City through individual Task Orders.

The Port of Seattle filed an environmental checklist in May 2021 for a project to widen Arrivals Drive at Seattle-Tacoma International Airport (SEA) from two lanes to four lanes, aiming to reduce congestion and improve safety for passengers and ground transportation vehicles. Construction was planned to begin in mid-2023 and last approximately 18 months, involving road realignments, updated stormwater drainage, new LED lighting, and utility relocations. The project was designed as a standalone improvement but coordinated with broader airport master plan efforts to accommodate potential future infrastructure expansions at SEA.