The Montana Supreme Court affirmed vacatur of a Montana Pollutant Discharge Elimination System (MPDES) permit issued by the Montana Department of Environmental Quality (MDEQ) for a copper and silver mine in the Cabinet Mountains. Environmental groups argued, among other things, that MDEQ unlawfully ...

A California appellate court upheld the state Office of Environmental Health Hazard Assessment's (OEHHA's) decision to list bisphenol A (BPA) as a chemical known to cause reproductive toxicity under the state Safe Drinking Water and Toxic Enforcement Act. An industry group sought to enjoin the listi...

A district court denied mine owners' motion to dismiss a lawsuit alleging they were in violation of their NPDES permit. A conservation group and the state of Washington argued that the owners had violated the terms of their permit by discharging pollutants in excess of average monthly effluent limit...

A district court vacated EPA's 2019 determination that found no jurisdictional waters under the CWA at a salt production complex bordering the southwestern San Francisco Bay. The Agency argued that the CWA did not apply to the complex because it was converted to salt ponds prior to the Act's passage...

A district court dismissed for lack of standing a challenge to a 2018 FWS memorandum that withdrew a 2014 memorandum stating the Service's intent to phase out most uses of neonicotinoid pesticides and genetically modified crops (GMCs) within the National Wildlife Refuge System. Environmental groups ...

A district court denied a motion to reconsider its 2018 ruling that gave EPA discretion as to how to establish a new TMDL for trash in the Anacostia River. An environmental group argued that little progress had been made since the 2018 ruling and that the court should require the Agency to establish...