The Seventh Circuit denied various states' motion to issue a preliminary injunction compelling the U.S. Army Corps of Engineers to prevent the emigration of invasive silver and bighead carp through the Chicago Area Waterway System into Lake Michigan. The states presented sufficient evidence to d...

A district court held that an energy company did not violate the CAA when it failed to obtain a new source review (NSR) permit prior to renovating electric utility steam generating units at its Monroe, Michigan, power plant. The government argued that a permit was required because the renovations co...

The Seventh Circuit upheld a $100,000 penalty assessment against three power plant developers for PSD permit violations at a proposed coal-fired power plant site. The court previously held that the developers' PSD permit expired because they failed to begin construction within the permit's 18-month ...