The Tenth Circuit affirmed a lower court decision denying an environmental group's motion to preliminarily enjoin the construction of an oil pipeline to run from Cushing, Oklahoma, to oil refineries along the Gulf Coast near Port Arthur, Texas. The group argued that the U.S. Army Corps of Engineers ...

A district court ordered EPA to conduct a necessity determination under CWA §303(c)(4)(B) in response to an environmental group's petition asking the Agency to establish water quality standards to control nitrogen and phosphorous pollution in the mainstem of the Mississippi River and the Northern G...

A district court upheld EPA's final TMDL for the Chesapeake Bay against challenges from farmer and home building groups. The TMDL—the largest ever developed by EPA—identifies the necessary pollution reductions of nitrogen, phosphorus, and sediment across Delaware, Maryland, New York, Pennsylvani...

A district court held that a coal company discharged excessive amounts of selenium into the waters of West Virginia in violation of the CWA and SMCRA. The environmental group that filed suit against the company has standing, and it satisfied the statutes' 60-day notice requirements for citizen suits...

The Seventh Circuit reversed a lower court decision finding a Wisconsin mine operator liable under the CWA for discharging copper into navigable waters without a permit. The CWA's permit shield provision provides that if a NPDES permit holder discharges pollutants in accordance with the terms of its...

A district court dismissed a landowner's lawsuit challenging the U.S. Army Corps of Engineers' jurisdictional determination for property that contains peat. The Corps issued its jurisdictional determination after the landowner sought permission to mine peat from the property for use in the construct...

A district court dismissed a homebuilder association's lawsuit against EPA and the U.S. Army Corps of Engineers challenging their determination that portions of the Santa Cruz River are traditional navigable waters (TNW) under the CWA. The association lacks standing because it failed to allege a spe...

A district court held that a mining company is liable under the CWA for the unpermitted discharge of selenium at one its surface mines. The company did not dispute that it has been discharging selenium from the mine, nor did it contest the fact that its permit contains no explicit authorization to d...

A district court upheld DOI's approval of oil spill response plans an oil company submitted for drilling operations in the Chukchi and Beaufort Seas. Despite environmental groups' arguments to the contrary, an environmental review was not required under NEPA since the approvals do not constitute a m...

The Ninth Circuit, on remand from the U.S. Supreme Court, held that pollution exceedances detected at monitoring stations in Los Angeles County were sufficient to establish the county's liability for NPDES permit violations under the CWA. In Los Angeles County Flood Control Dist. v. Natural Resource...