A district court denied oil and gas companies' motions to dismiss claims that their use and handling of methyl tertiary butyl ether (MTBE) has contaminated, or threatens to contaminate, groundwater in Puerto Rico. The companies argued that Puerto Rico's island-wide claims for relief should be dismis...

A district court dismissed several claims a group of cattle ranchers filed against USDA and DOI concerning actions taken to protect the New Mexico meadow jumping mouse, an endangered species. Following the listing of the species in 2014, the U.S. Forest Service proposed to erect a five-foot pipe fen...

The Federal Claims Court held that the U.S. government may not engage in discovery about oil companies' insurance policies in an underlying case concerning cleanup costs stemming from the production of high-octane aviation gas (avgas) during World War II. The Federal Circuit previously held that the...

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...

The Sixth Circuit held that the CAA does not preempt property owners' state common-law tort claims against a whiskey distillery for excess ethanol emissions that allegedly caused "whiskey fungus" to grow on their properties. Below, the district court rejected the distillery's argument that the CAA p...