TagSea-Tac Airport(2025)

Three-panel educational diagram illustrating how aircraft noise is measured and averaged across different time scales: Single Event Sound Level (SEL) showing two aircraft flyovers with Lmax and duration annotations, Hourly LEQ showing cumulative noise over one hour, and Day-Night Level (DNL) showing 24-hour noise distribution with a 10-dB nighttime penalty applied during nighttime hours. No source organization or document identifier is visible.

Large-scale structural demolition or construction work on the airside of Seattle-Tacoma International Airport, with visible Alaska Airlines signage, gate markers S5 and S6, and a Morrow Equipment Co. scaffold/crane tower. Multiple cranes including yellow Liebherr-type and blue Genie aerial lifts are actively rigging a large steel truss structure near the terminal.

A group of approximately ten workers wearing orange and yellow high-visibility safety vests stand together in what appears to be an airport rental car center, with visible Avis and Budget car rental signage and a shuttle bus directional sign overhead. The diverse group includes both men and women, some wearing winter hats and one woman in a hijab with a visible ID badge.

This technical report, prepared by Landrum & Brown for the Port of Seattle in June 2024, outlines the purpose and need for near-term construction and improvement projects identified in the Sustainable Airport Master Plan for Seattle-Tacoma International Airport. It is part of a broader set of supporting documents that also covers alternatives analysis, terminal needs, and air cargo facility requirements. The report provides the foundational justification for planned airport development decisions.

This technical report, prepared by Landrum & Brown for the Port of Seattle in June 2024, outlines the purpose and need for near-term capital projects identified in Sea-Tac Airport's Sustainable Airport Master Plan. It is part of a broader set of supporting documents that also covers alternatives analysis, terminal needs assessment, and air cargo facility requirements. The report provides the foundational justification for proposed airport improvements and infrastructure expansions at Seattle-Tacoma International Airport.

Aerial photograph of Seattle-Tacoma International Airport (Sea-Tac) showing its parallel runway configuration, taxiways, terminal facilities, and surrounding communities. Mount Rainier is visible on the horizon to the southeast, confirming the Pacific Northwest location.

This aerial map, from the Seattle-Tacoma International Airport Sustainable Airport Master Plan (SAMP) Environmental Review prepared by the Port of Seattle and LPA Group, depicts near-term capital projects across the airport campus. Projects are color-coded by category including Second Terminal Projects (blue), Cargo Expansion Projects (tan/gold), Airfield Operational Projects (yellow), Airfield Safety/Standards Projects (red), and Sustainable Aviation Fuel Projects (green), with individual project codes labeled (e.g., A01–A09, S01–S10, C01–C03, L01–L07, T01–T02).