A district court denied a motion to dismiss a challenge to NMFS' decision to issue incidental harassment authorizations to five companies to conduct seismic testing for oil and gas in the Mid- and South Atlantic Ocean. South Carolina challenged President Trump's reversal via Executive Order No. 1379...

A district court dismissed a lawsuit challenging two protocol agreements entered into by Native American tribes and the Bureau of Indian Affairs that established procedures for enforcement of the tribes' water rights in the Upper Klamath Basin. A group of ranchers and landowners argued that the agre...

The Seventh Circuit affirmed dismissal of a challenge to the Michigan Department of Environmental Quality's approval of a CWA §404 permit for a proposed mine along the Menominee River. A Native American tribe argued that EPA and the Corps should have exercised authority over the permit because circ...

A district court denied motions to remand and vacate EPA's decision to allow a no-discharge zone in Puget Sound. A tugboat, towboat, and barge industry group argued that EPA erred in determining that adequate pump-out facilities were reasonably available without considering the compliance costs for ...

The Ninth Circuit affirmed judgment for environmental groups in a CWA challenge to compel EPA to develop and issue long-overdue temperature TMDLs for the Columbia and Snake Rivers. The groups argued that inaction by Oregon and Washington to issue TMDLs for the two rivers amounted to a "constructive ...

A state appellate court reversed the Minnesota Pollution Control Agency's decision to reissue a NPDES permit for an iron ore mine in northeast Minnesota. An environmental group and Indian band challenged the decision, arguing that the agency erred in its interpretation of the CWA and that the permit...

A state court preliminarily enjoined the New Hampshire Department of Environmental Services (DES) from enforcing new rules that tightened allowable limits of per- and polyfluoroalkyl substances (PFAS) in the state's drinking water and groundwater. A chemical manufacturing company argued that DES vio...

A district court held that environmental groups lacked standing in their challenge to EPA's exclusion of certain waste treatment systems from the definition of navigable waters under the CWA. The groups argued that they had representational standing to challenge the exclusion, relying on declaration...

A district court upheld EPA's interpretation that the CWA does not regulate discharges into groundwater that is hydrologically connected to navigable waters in a lawsuit concerning a wastewater treatment facility on Cape Cod. An environmental group argued that the facility was discharging pollutants...

A district court denied summary judgment in a challenge to EPA's approval of Maryland's 2018 water quality report, which reclassified 139 impairment listings based on TMDLs set by the Agency for the entire Chesapeake Bay. Environmental groups argued that EPA exceeded its authority under the CWA by a...