TagUltrafine Particles(75)

Des Moines resident Jeffrey Bogen submitted a formal comment arguing that the Sea-Tac Airport Master Plan (SAMP) Environmental Impact Statement fails to adequately analyze cumulative health effects on nearby communities. He contends that the EIS must go beyond examining individual pollution sources and instead assess the combined burden of aircraft ultrafine particles, roadway traffic emissions, chronic noise, and other stressors together, since scientific research shows these exposures interact and compound one another. Bogen calls for a comprehensive cumulative-risk framework, backed by ten peer-reviewed studies, to be incorporated into the EIS before any accurate public health or policy conclusions can be drawn.

A French study measured ultrafine particle (UFP) and black carbon (BC) air pollution inside aircraft cabins across 16 European commercial flights, finding average concentrations of 9,122 particles/cm³ for UFP and 207 ng/m³ for BC. Pollution levels were highest during ground phases such as boarding and taxiing, then dropped during flight, with outdoor airport air identified as the primary source of cabin air pollution. These findings suggest that airport ambient air quality plays a greater role in passenger exposure than in-flight sources.

This document presents materials from a Puget Sound Clean Air Agency Monitoring Site Tour held in September 2025, covering the agency's mission to protect air quality across King, Pierce, Snohomish, and Kitsap counties. It outlines key programs including climate action planning, wood stove replacement, and diesel emissions reduction, with a focus on fine particulate matter (PM2.5), which accounts for 90% of cardiac and respiratory health risk from air pollution in the region. Note: this document relates to regional air quality monitoring and does not contain information about Sea-Tac Airport noise policy.

The Aviation Noise and Emissions Mitigation Act, introduced in the 119th Congress by Rep. Smith of Washington, would direct the EPA to establish a 3-year pilot grant program to measure aircraft and airport noise and emissions—including greenhouse gases, particulate matter, and ultrafine particles—in communities near airports and flight paths. Grant recipients would use advanced monitoring technology to trace pollution to specific sources, produce neighborhood- and ZIP Code-level data, and work with local agencies and community organizations to develop mitigation strategies. The program is designed to be replicable nationwide, with a focus on identifying and protecting frontline and disproportionately impacted communities.

This presentation from the 2024 International Society of Exposure Science annual meeting describes a mobile air quality monitoring study conducted in Seattle, Washington, examining exposure to pollutants from specific sources such as traffic and industry. Researchers from the University of Washington used a multi-pollutant mobile monitoring campaign to measure and assess how people in the Seattle area are exposed to different types of air pollution across various locations. The study covers introduction, methods, results, and conclusions related to source-specific air pollution exposure assessment.