A district court held that litter and manure washed from a farmyard into navigable waters due to a precipitation event is an agricultural stormwater discharge and not a point source discharge, rendering it exempt from the CWA's NPDES permit requirement. The case involves a poultry farmer who operate...

The Ninth Circuit held that environmental groups lacked standing to compel the Washington State Department of Ecology and other regional agencies to regulate greenhouse gas emissions from the state's five oil refineries under the CAA. The groups claimed that the agencies failed to define emission li...

A Wisconsin court held that the state environmental agency should have considered impacts on downstream water quality when it issued a state pollutant discharge elimination system permit to an industrial dairy processing plant. An environmental group challenged the permit, arguing that it would allo...

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...