The D.C. Circuit upheld EPA's rule designating certain areas in Utah as nonattainment for the 2006 24-hour fine particulate matter (PM2.5) standard. Petitioners—two counties, three cities, and an aerospace and defense company—challenged the inclusion of parts of Tooele and Box Elder Counties wit...

A district court upheld EPA's rule setting numeric nutrient criteria for Florida except in two respects: the stream criteria and the default downstream-protection criteria for unimpaired lakes. In 2009, recognizing that the state's narrative criterion was insufficient to control Florida's widesp...