Tag Archives: “UARG v. EPA”

Opacity Still Matters: Court of Appeals Affirms EPA’s NSPS for Particulate Matter

Last week, in Utility Air Regulatory Group v. EPA, the D.C. Circuit Court of Appeals affirmed EPA’s 2012 New Source Performance Standards for particulate matter emissions from fossil-fuel-fired steam electric generating units.  The opinion is largely a plain vanilla administrative law decision, but does provide some useful guidance on the appeal of CAA regulations.  It is also a useful reminder of the extent of deference to EPA in an ordinary case.… More