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Ambient Air Quality Standards for Particle Pollution

PostPosted: Fri Jun 15, 2012 6:38 pm
by Wilberforce
EPA Proposes to Revise the National Ambient Air Quality Standards for Particle Pollution
http://www.epa.gov/airquality/particlep ... tions.html

"... based on assessing the body of available evidence, the ISA notes that (1) cardiovascular effects have been linked with elemental carbon as well as with PM2.5 from crustal sources, traffic, and wood smoke/vegetative burning..."

"...the currently available evidence suggests associations between cardiovascular effects and a number of specific PM2.5–related source categories, specifically oil combustion, wood or biomass burning, motor vehicle emissions, and crustal or road dust sources..."

"...These Northwest counties generally represent areas where the annual mean PM2.5 concentrations have historically been low but where relatively high 24-hour concentrations occur, often related to seasonal wood smoke emissions..."