Recent comments by EPA officials suggest that the agency will consider whether it should, for the first time, set a standard for “ultrafine” particles when it reviews its particulate matter national ambient air quality...more
On December 11, a D.C. Circuit panel (Tatel, Brown, Griffith) granted in part environmental and state petitions for rehearing in Mississippi v. EPA (Nos. 08-1200 et al.), revising key language describing the court’s review of...more