A district court denied the Pipeline and Hazardous Materials Safety Administration's (PHMSA's) motion to dismiss a challenge to the agency's pipeline inspection regulations. An environmental group argued that PHMSA's existing regulations did not encompass all oil and gas pipelines that crossed feder...
A district court stayed a constitutional challenge to the Washington Department of Ecology's decision to deny a coal company a CWA §401 certification for construction of a coal export facility along the Columbia River. The company argued that the Department violated the Commerce Clause by denying t...
The Fifth Circuit vacated portions of a 2015 EPA rule that set new effluent limitation guidelines (ELGs) for legacy wastewater and combustion residual leachate that are discharged from steam electric power plants. Environmental groups argued that the Agency arbitrarily set the ELGs using an older, l...
A state high court affirmed a lower court's summary judgment for the Montana Department of Environmental Quality in a challenge to the Department's issuance of a NPDES general permit for discharges from municipal separate storm sewer systems (MS4s). An environmental group challenged the permit, argu...