TagUWDEOHS(41)

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.

Researchers conducted a year-long mobile air quality monitoring campaign across the greater Seattle area, measuring traffic-related pollutants including ultrafine particles, black carbon, nitrogen dioxide, fine particulate matter, and carbon dioxide at 309 locations. The study developed predictive models of annual average pollution levels to support health research on how traffic emissions affect Seattle residents, particularly the elderly. The findings showed strong spatial variation in pollution levels linked to traffic and land use patterns across the region.

The Healthy Air, Healthy Schools Study Phase 1 Report, published in December 2021 by the University of Washington for the Washington State Legislature, investigates air quality conditions affecting schools in communities near Seattle-Tacoma International Airport, including SeaTac, Burien, Federal Way, Normandy Park, and Des Moines. The study was conducted in partnership with Federal Way Public Schools and Highline Public Schools, with researchers from UW's Environmental & Occupational Health Sciences and Civil & Environmental Engineering departments. It represents the first phase of a broader effort to understand how local air pollution — potentially influenced by airport and related traffic activity — impacts the health of students in these communities.

A 2021 Washington State legislative funding request of $912,810, sponsored by Representatives Tina Orwall and Jesse Johnson, seeks to deploy HEPA portable air cleaners in 20 schools across SeaTac, Des Moines, Federal Way, Normandy Park, and Burien to reduce students' exposure to outdoor air pollution from traffic and wildfire smoke. The University of Washington's Department of Environmental and Occupational Health Sciences would lead the project, measuring indoor air quality improvements and student performance outcomes. The initiative builds on an ongoing 2021 pilot study monitoring air quality in five schools within the Highline and Federal Way School Districts.

This research presentation describes a mobile air monitoring study conducted in Seattle to measure ultrafine particulate matter and black carbon pollution levels for elderly residents participating in the Adult Changes in Thought (ACT) study, which investigates aging and dementia. Researchers used a vehicle-mounted monitoring system to collect repeated short-term air quality samples across the Seattle area, aiming to estimate long-term pollution exposure for cohort participants aged 65 and older. The study is funded by the National Institute of Environmental Health Sciences and the National Institute on Aging.

A 2021 University of Washington study found that ultrafine air pollution particles from road and aircraft traffic near Seattle-Tacoma International Airport were infiltrating nearby school classrooms, with indoor levels reaching roughly half of outdoor concentrations before any intervention. Installing portable HEPA air purifiers reduced classroom ultrafine particle levels to about one-tenth of outdoor levels, cutting overall particle concentrations by an estimated 70%. A follow-up Phase 2 study is now underway in 30 Washington schools to examine longer-term air quality improvements and their effects on student health and academic performance.