The Fifth Circuit denied environmental groups' petition to review the Army Corps of Engineers' issuance of a CWA permit for a proposed liquefied natural gas production and export terminal on the Calcasieu River in Louisiana. The groups argued the Corps failed to adequately consider a particular alte...

A district court granted in part summary judgment for an environmental group in a challenge to EPA's issuance of recommended water quality criteria for cadmium in 2016. The group argued EPA violated the ESA by failing to consult with expert agencies before issuing the recommended criteria. The Agenc...

The D.C. Circuit dismissed five states' petition to review EPA's extension of a compliance deadline for a revised national drinking water regulation, which in turn extended the deadline for states to enforce conforming regulations to their own. The states argued the extension would cause their resid...

The Minnesota Supreme Court affirmed in part and reversed in part an appellate court ruling in a challenge to the Minnesota Pollution Control Agency's (MPCA's) decision to issue an NPDES permit for a proposed mine and processing plant to extract copper, nickel, and precious metals in northeastern Mi...

The Ninth Circuit, 2-1, denied the city of San Francisco's challenge to an EPA order denying review of the city's NPDES permit for a combined sewer system and wastewater treatment facility. The city argued EPA violated the CWA by including in the permit two general narrative prohibitions on discharg...