U.S. tightens regulations against soot
Letter by Cathy Baiton, printed in the Lethbridge Herald (lethbridgeherald.com) Letters – January 22, 2013 In December, the EPA announced tighter regulations on soot, a component of particulate matter. Health professionals and environmental/health groups have welcomed the change, with some calling for a more stringent policy. For people concerned about air issues including residential wood burning…
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