EPA says it is modifying its trading program regulations for electricity generating units
to ensure that the existing good neighbor obligations of upwind states with respect to the 2008 ozone NAAQS will continue to be met while the administrative stay is in effect.
SCOTUS will hear arguments in the case City and County of San Francisco v. EPA to determine if the Clean Water Act (CWA) allows EPA (or an authorized state) to impose generic limitations on NPDES permit holders for specific pollutants.