A district court dismissed environmental groups' CAA citizen suit against EPA for failing to respond to their 2011 petition concerning ammonia gas pollution. In 2011, the groups petitioned EPA asking it to find that ammonia gas pollution endangers the public health and welfare, designate ammonia as ...
The D.C. Circuit dismissed a truck association's lawsuit against EPA challenging California's tractor-trailer emission rules. The association argued that the state regulations impermissibly discriminate against out-of-state tractor trailers in violation of the dormant Commerce Clause. The associatio...
The Sixth Circuit held that the CAA does not preempt property owners' state common law tort claims against a nearby power plant for allowing ash, dust, and coal combustion by-products to blow onto their properties. The owners brought RCRA and CAA claims against the power plant in addition to their s...