The First Circuit held that a lower court erred in dismissing a landowner's CWA citizen suit for lack of proper pre-suit notice. The landowner filed suit against the neighboring property owner—an automobile salvage and recycling business—for discharging pollutants into U.S. waters without a vali...

The U.S. Supreme Court held that stormwater runoff from logging roads that is collected by and then discharged from a system of ditches, culverts, and channels is not a point source discharge for which an NPDES permit is required. An environmental group filed suit claiming that the Oregon forestry d...

The Fifth Circuit held that Transocean's primary and excess-liability insurers must cover BP's pollution-related liabilities deriving from April 2010 oil spill in the Gulf of Mexico. Under Texas law, the umbrella insurance policy—not the indemnity provisions of Transocean's and BP's contract—con...

A West Virginia court reversed a decision by the state environmental quality board in which it remanded a NPDES permit for a mining company to the state environmental agency for further review and analysis. The board's decision not to defer to the state agency's interpretation of water quality stand...

The Fourth Circuit vacated a biological opinion the National Marine Fisheries Service (NMFS) prepared as part of EPA's reregistration process for three pesticides—chlorpyrifos, diazinon, and malathion. The biological opinion concluded that the pesticides would jeopardize the viability of certain P...