A district court denied the state of Florida's motion for a limited stay of the court's prior ruling vacating EPA's approval of Florida's application to assume permitting authority under §404 of the CWA. Environmental groups initially sued, arguing EPA and FWS violated the ESA because neither the p...

A district court denied summary judgment for Native American tribes in a challenge to EPA's approval of Minnesota's 2021 revised water quality standards. The revisions replaced quantitative standards with qualitative narrative standards that describe the characteristics Minnesota waters must have to...

A district court granted summary judgment for a conservation group in a challenge to the Natural Resource Conservation Service's (NRCS') 2020 rule regarding certification of maps delineating wetlands. The group argued NRCS changed its policy regarding pre-1996 wetland certifications without exercisi...

The Fourth Circuit affirmed a district court order remanding to state court two climate deception lawsuits against oil and gas companies. City and county governments in Maryland initially sued in state court, alleging the companies used and promoted fossil fuel products while knowing, concealing, an...

A district court granted the state of Vermont's motion to remand to state court a climate misinformation suit brought against fossil fuel companies. The state initially sued in state court, arguing the companies violated the Vermont Consumer Protection Act by failing to inform consumers about the im...

A district court granted in part environmental groups' motion for summary judgment in a challenge to various agency actions relating to EPA's approval of the state of Florida's application to assume permitting authority under §404 of the CWA. The groups argued EPA and FWS violated the ESA because n...

A district court granted in part and denied in part the federal government's motion to dismiss a second amended complaint in an ongoing civil rights lawsuit brought by 21 young people. Plaintiffs argued the government promoted the exploitation of fossil fuels despite knowing its actions would signif...

The Tenth Circuit reversed a district court finding of a CWA violation in a citizen suit brought against the operator of a gold mine in Colorado. Plaintiffs argued the operator violated the CWA because seepage from the mine's settling ponds flowed into the groundwater and then migrated to the Middle...

The Fifth Circuit vacated a district court ruling in a decades-long dispute over whether a property in Louisiana contains federally regulated wetlands. The property owner sued the Army Corps of Engineers, arguing its determination that the property contained federal regulated wetlands was arbitrary ...

The D.C. Circuit affirmed a district court order remanding to state court a climate liability suit brought against oil and gas companies. The District of Columbia initially sued in state court, arguing the companies deceived consumers about the causal link between fossil fuel usage and climate chang...