The Ninth Circuit granted in part environmental groups' petition to review EPA's decision refusing to revise technology-based effluent limits, guidelines, and standards (ELGs) for certain industries previously promulgated under the CWA. The groups challenged EPA's decision refusing to revise ELGs fo...
The Third Circuit affirmed a district court order remanding to state court a lawsuit concerning a chemical company's design, manufacture, marketing, and sale of 1,4-dioxane. The state of New Jersey sued the company in state court, arguing its products substantially harmed the environment. The c...
A district court vacated its preliminary injunction in an environmental groups' challenge to the Army Corps of Engineers' issuance of a dredge-and-fill permit for a dam expansion project in Colorado. It previously remanded with vacatur the Corps' record of decision, final EIS, and permit, enjoined f...
The Fifth Circuit dismissed environmental groups' petition to review an EPA rule granting Louisiana primary enforcement authority over Class VI underground carbon sequestration wells. The groups petitioned under the SDWA's review provision, and the state and its Department of Energy and Natural Reso...
A district court enjoined construction on a dam expansion project in Colorado in environmental groups' challenge to the Army Corps of Engineers' issuance of a dredge and fill permit. The court previously held the Corps failed to comply with the CWA and NEPA when it issued the permit. The court subse...
The Sixth Circuit denied environmental groups' petition to review the Tennessee Department of Environment and Conservation's (TDEC's) order issuing a water quality certification for a proposed fossil gas pipeline in Tennessee. The groups argued TDEC arbitrarily and capriciously determined that ...
The Fifth Circuit affirmed denial of summary judgment for two Native American tribes and an environmental group in a challenge to a CWA §404 permit issued by the Army Corps of Engineers to expand operations at an oil export terminal on Texas' Gulf Coast. The tribes and group sought to invalidate th...
The Fourth Circuit vacated two district court decisions in lawsuits concerning a chemical manufacturer's role in allegedly contaminating Maryland's and South Carolina's waterways by using per- and polyfluoroalkyl substances (PFAS) in its products. The two states sued in state court, each filing two ...
The U.S. Supreme Court held, 5-4, that the CWA does not authorize EPA to include "end-result" provisions in NPDES permits, in a lawsuit concerning the Agency's issuance of a renewal permit for the city of San Francisco that added two such requirements. The city petitioned for review, arguing the req...
The D.C. Circuit vacated certain requirements under an EPA rule concerning the assertion and treatment of confidential business information (CBI) claims for information reported to or otherwise obtained by the Agency under TSCA. Trade groups challenged the rule, arguing it allowed for unlawful discl...