TagPSCAA(80)
Puget Sound Clean Air Agency
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2025-04-01
PSCAA Ultra Fine Particulate (UFP), SMPS Monitoring web page
Under Construction! Notes: – Particles are counted at 1 or 2.5 minutes per scan of the full size bin range – To select an earlier date, select a time button – SeaTac North monitoring began early April 2025 Other notes: – Data have been smoothed in both dimensions, with a gaussian filter. – There are -
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2024-10-01Update on Our Ongoing Ultrafine Monitoring
The Puget Sound Clean Air Agency's Monitoring Team provides an October 2024 update on their ongoing ultrafine particle (UFP) monitoring program, explaining that UFPs are extremely tiny particles smaller than 0.1 microns that are not currently regulated under air quality standards. The presentation covers key concepts such as particle number concentration (PNC), monitoring instrumentation, and WHO good practice recommendations for UFP measurement. While not specific to noise policy, this monitoring effort is relevant to understanding air quality impacts near high-traffic areas such as airports. -
PSCAA Air Quality Monitor Site Sunset Park 2024-02-05
Google Maps satellite imagery showing the area east of Des Moines Memorial Dr S near S 138th–S 142nd Streets, featuring Tub Lake, Pat Ryan Field, North SeaTac Mountain Bike Trails, and a red location pin near 18th Ave S. Adjacent landmarks include Park N Jet Lot 2 SeaTac Airport Parking and Suddath Relocation Systems of Seattle. -
2023-02-10Ultrafine particle monitoring (Seattle and TBD) – Member Requested Local Community Project Information Form
A 2023 Washington State legislative funding request of $412,000 seeks to establish two ultrafine particle air quality monitors near Sea-Tac Airport and the I-5/I-90 interchange in Seattle, operated by the Puget Sound Clean Air Agency. The project aims to measure tiny airborne particles — particularly those produced by aircraft and vehicle traffic — that are not currently tracked routinely in Washington State. The University of Washington would analyze the collected data to identify pollution sources and establish health-impact baselines, with monitoring expected to begin in spring 2024. -
2022-08-13
*Where’s my Clair Patterson?
There is this form of air pollution, which you probably have not heard of, called ultrafine particulates (UFPs). Though they are invisible, they seem to have some particularly nasty effects on human health. UFPs have not been well-studied, they are unregulated, and yet they are prevalent in commercial jet engine emissions. But this is not -
2022-08-08UFP Advisory Group Meeting Minutes: August 8, 2022
A University of Washington research team presented findings to a community advisory group showing that HEPA air purifiers in classrooms near Sea-Tac Airport reduced ultrafine particle (UFP) levels from 50% down to just 10% of outdoor concentrations. The meeting, held August 8, 2022, also covered a small pilot health study suggesting short-term cardiovascular and respiratory differences in people exposed to aircraft UFPs while walking under flight paths. Participants from government agencies, community organizations, and public health departments discussed next steps including expanded outdoor monitoring, wildfire response planning, and potential new funding through the HEAL Act. -
2022-06-08State of the airshed: Executive summary
The Puget Sound Clean Air Agency's 'State of the Airshed' report reviews progress on the agency's 2014 Strategic Plan, which aimed to protect public health, improve neighborhood air quality, and reduce the region's contribution to climate change across King, Kitsap, Pierce, and Snohomish counties. The report examines how the agency met or fell short of its goals amid regional growth and challenges such as wildfire smoke and the COVID-19 pandemic. Note: This document focuses on air quality and does not contain information related to Sea-Tac Airport noise policy.