A major air pollutant consisting of tiny solid or liquid particles of soot, dust, smoke, fumes, and mists. The size of the particles (10 microns or smaller, about 0.0004 inches or less) allows them to easily enter the air sacs deep in the lungs where they may be deposited, resulting in adverse health effects. PM<sub>10</sub> also causes visibility reduction and is a criteria air pollutant.
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March 6th 2012 We have published our Winter 2012 Air Quality News Bulletin, which provides updates on the Toxics Reduction Act, ECAs, Emergency Response Plans as well as covering other environmental topics.
September 27th 2011 This is an announcement regarding our series of air quality breakfast seminars. Click to visit our seminar page for a more detailed description of the topics covered.