EPA Endorses New Air Quality Measurement Methods

Law360, New York (November 8, 2013, 4:53 PM EST) -- The U.S. Environmental Protection Agency on Friday approved five new equivalent methods for states and air quality-monitoring agencies to apply when measuring ambient air quality for particulate matter and other pollutants.

The new procedures can now be used to determine compliance with National Ambient Air Quality Standards. Two of the methods cover particulate matter less than 10 micrometers in diameter, two others are designed for particulate matter less than 2.5 micrometers in diameter, and another is for nitrogen dioxide.

The new methods meet EPA adequacy requirements and...
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