The recent decision in Sierra Club v. EPA, 705 F.3d 458 (D.C. Cir. 2013) vacated all of EPA’s rules on Significant Monitoring Concentrations (“SMCs”), as well as some (the Prevention of Significant Deterioration (“PSD”)...more
On January 4, 2013, the U.S. Court of Appeals for the District of Columbia Circuit held in Natural Resources Defense Council v. EPA, No. 08-1250, that the U.S. Environmental Protection Agency (EPA) had improperly promulgated...more
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
Revised ambient air quality standard could require more stringent control of fine particulate matter emissions.
On December 14, the U.S. Environmental Protection Agency (EPA) finalized its rule tightening the National...more
On Friday, EPA announced promulgation of its revised fine particulate, or PM2.5, NAAQS. Why am I yawning? Let me count the ways...more
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