On Friday, the Court of Appeals for the District of Columbia Circuit rejected EPA’s approach to implementation of the PM2.5 NAAQS. The fine particulate NAAQS was first published in 1997, and EPA issued implementation rules...more
1/8/2013 - EPA NAAQS
On Friday, EPA announced promulgation of its revised fine particulate, or PM2.5, NAAQS. Why am I yawning? Let me count the ways...more
12/17/2012 - EPA NAAQS
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