StART Feb 26 2020 Presentation 2 UW MOV UP Study

• Study the implications of air traffic at Sea-Tac • Assess the concentrations of ultrafine particulate matter (UFP) in areas surrounding and directly impacted by air traffic • Distinguish between and compare concentrations of aircraft- related and other sources of UFP • Coordinate with local governments, and share results and solicit feedback from community Community Engagement Funding for the MOV-UP study was provided to the University of Washington by a proviso in the state budget. Study Advisory Group *3 meetings to date Ongoing communication with community *6 meetings to date e.g., Highline Forum, Federal Way City Council, Seattle/King Board of Health, Airport Impacts Meeting Media Coverage Important characteristic of Ultrafine Particles • They have a large amount of surface area, relative to their size. • They are small enough to enter the bloodstream, cross the placenta, and cross the blood-brain barrier. • Because they are small, they have very little mass. • Typically, they are measured differently than PM2.5, which includes larger particles, and therefore has appreciable mass that can be weighed. Ultrafine Particles (UFPs) Ultrafine Particles unregulated but potentially important Health Effects more uncertain compared to PM2.5 ,but a growing body of evidence Diesel Engines emit ultrafine particles resulting in elevated levels near major roadways (within 200 meters downwind) Jet aircraft directly emit “ultra” ultrafine particles (< 30 nanometers) Study Region: Mobile Transects and Fixed Monitoring Site Locations Mobile Monitoring Platform Parameter Instrument Mobile and Fixed sampling: Particle number concentration (35 nm – 1 µm) P-Trak 8525, w/ diffusion…
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