TagSustainable Airport Master Plan(237)

This Noise Technical Report, prepared by Landrum & Brown for the Port of Seattle in March 2024, analyzes noise impacts associated with near-term construction and development projects outlined in the Sustainable Airport Master Plan for Seattle-Tacoma International Airport. The report is part of Appendix J, which covers noise and noise-compatible land use, and was developed to satisfy both federal (NEPA) and state (SEPA) environmental review requirements. It provides technical findings to help assess how proposed airport improvements may affect noise levels in surrounding communities.

Appendix C of the Sea-Tac Sustainable Airport Master Plan covers air quality and greenhouse gas emissions analyses prepared for the Port of Seattle by Landrum & Brown. It includes technical reports on emissions from aircraft, ground support equipment, construction, and other airport sources, as well as a human health risk assessment focused on ultrafine particles. Note that some climate-related sections originally included in the Draft Environmental Assessment were later removed following changes to federal executive orders and a 2025 Supreme Court ruling.

This March 2024 technical report, prepared by Landrum & Brown for the Port of Seattle, assesses air quality and climate impacts associated with near-term construction and operational projects outlined in the Sustainable Airport Master Plan for Seattle-Tacoma International Airport. It analyzes emissions from sources including aircraft, ground support equipment, stationary and mobile sources, auxiliary power units, and construction activities. The report follows NEPA air quality and climate protocols to evaluate potential environmental effects of planned airport improvements.

This contract amendment extends the agreement between the City of Des Moines, Washington, and Vianair, Inc., an aviation consulting firm, through December 31, 2025. The amendment, signed in early 2024, builds on an original contract from July 2017 that had previously been amended three times. Vianair likely provides noise analysis or air traffic consulting services related to Sea-Tac Airport on behalf of the City.

The Port of Seattle presented an environmental review of near-term construction projects at Seattle-Tacoma International Airport as part of its Sustainable Airport Master Plan. Projects include expanded passenger terminals and gates to handle a projected 56 million annual passengers, additional cargo facilities, airfield safety upgrades to meet FAA standards, taxiway efficiency improvements, and new fuel storage to support Sustainable Aviation Fuel initiatives. The review maps out how these developments will be assessed for their environmental impacts across the airport and surrounding areas.

This technical memorandum from Landrum & Brown (February 2024) explains that noise modeling for the Seattle-Tacoma Airport (SEA) Sustainable Airport Master Plan (SAMP) Environmental Review was updated from AEDT Version 3e to the newer AEDT Version 3f, released December 13, 2023. The upgrade allowed modelers to use actual aircraft data for the Boeing 737-7 and Cessna 408 SkyCourier rather than substitute aircraft, improving modeling accuracy. The document details the specific airframe, engine, and Aircraft Noise and Performance (ANP) data changes made between the two software versions.

This technical report, prepared by Parametrix for the Port of Seattle in February 2024, documents the wetlands and streams found within and around Seattle-Tacoma International Airport as part of the Sustainable Airport Master Plan (SAMP) Near Term Projects. It covers the delineation of aquatic critical areas, assessments of potential project impacts on wetlands and waterways, proposed mitigation measures, and the permitting approach needed to address those impacts. The report also includes analysis of impervious surface changes and Federal Flood Risk Management Standard (FFRMS) compliance worksheets.

This technical report, prepared by Parametrix for the Port of Seattle in February 2024, documents the wetlands and streams found at Seattle-Tacoma International Airport as part of the Sustainable Airport Master Plan (SAMP) Near Term Projects. It covers the delineation of wetland and stream boundaries, assesses potential impacts to these aquatic areas from planned airport improvements, and outlines mitigation measures and permitting approaches to address those impacts.

This February 2024 technical report from the Port of Seattle documents the wetlands and streams located at and around Seattle-Tacoma International Airport as part of the Sustainable Airport Master Plan (SAMP). It includes mapped locations of wetlands surveyed across multiple years (2006, 2014, and 2017) along with stream corridors such as Miller Creek, Des Moines Creek, and Walker Creek. Field hydrology monitoring data from 2020 is also provided, recording groundwater depth and soil saturation measurements to assess wetland conditions across the airport property.