Derek Teaney

Cases

• Haw River Assembly v. United States Army Corps of Engineers

  Resolved by OrderOther
  26-1470CIVILArgued May 13, 2026Panel: Chief Judge Diaz, Judge Niemeyer, Judge Quattlebaum
  With:George Sibley IIIMary Sprague
• Dan River Basin Association v. Virginia Department of Environmental Quality

  Opinion Issued
  26-1220CIVILArgued Apr 28, 2026Panel: Judge Gregory, Judge Wynn, Judge Thacker
  With:Katherine KulbokJeremy Marwell
• Sierra Club v. North Carolina Department of Environmental Quality

  Opinion Issued
  26-1044CIVILArgued Apr 28, 2026Panel: Judge Gregory, Judge Wynn, Judge Thacker
  With:Taylor CrabtreeJeremy Marwell
• West Virginia Rivers Coalition, Inc. v. The Chemours Company FC, LLC

  Opinion Issued
  25-1924CIVILArgued Mar 19, 2026Panel: Judge Niemeyer, Judge Quattlebaum, Judge Rushing
  With:Allon KedemJustin Newman
• Appalachian Voices v. US Dept.

  Opinion Issued
  23-1384MOUNTAIN VALLEY PIPELINEArgued Jul 27, 2023Panel: Judge Gregory, Judge Wynn, Judge Thacker
  With:Kevin McArdleDonald Verrilli Jr.Kimberley Hunter
• Sierra Club v. State Water Control Board

  Opinion IssuedAffirmed
  21-2425MOUNTAIN VALLEY PIPELINEArgued Jan 24, 2023Panel: Chief Judge Gregory, Judge Wynn, Judge Thacker
  With:Erika MaleyGeorge Sibley III
• Sierra Club v. West Virginia DEP

  Opinion IssuedVacated
  22-1008MOUNTAIN VALLEY PIPELINEArgued Oct 25, 2022Panel: Chief Judge Gregory, Judge Wynn, Judge Thacker
  With:Lindsay SeeGeorge Sibley III
• Sierra Club v. U. S. Army Corps of Engineers

  Opinion Issued
  20-2039MOUNTAIN VALLEY PIPELINEArgued Nov 9, 2020Panel: Chief Judge Gregory, Judge Wynn, Judge Thacker
  With:Kevin McArdleGeorge Sibley III
• Sanitary Bd. of Charleston v. Andrew Wheeler

  Opinion IssuedAffirmed
  18-2385CIVILArgued Jan 29, 2020Panel: Judge Agee, Judge Diaz, Judge Harris
  With:Paul NyffelerTamara Rountree