EPA to tighten soot standards

December 14, 2012 by Ken Ward Jr.

Here’s the initial report (at least the first one I saw) from the Washington Post:

The Environmental Protection Agency will tighten the nation’s soot standardsby 20 percent Friday, a move that will force communities across the country to improve air quality by the end of the decade while making it harder for some industries to expand operations without strict pollution controls.

The new rule limits soot, or fine particulate matter, which stems from activities ranging from burning wood to vehicle emissions, and which causes disease by entering the lungs and bloodstream. Fine particulate matter measuring less than 2.5 micrometers in diameter, or one-thirtieth the width of a human hair, ranks as the country’s most widespread deadly pollutant.

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