United States DC Circuit

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Masias v. EPA, 16-1314

Denied challenges to the U.S. Environmental Protection Agency's determination that it lacked information to classify three specific geographic areas as meeting or not meeting the air quality standard for sulfur dioxide, and that it must therefore designate them as unclassifiable, in consolidated cases brought by industry and environmental petitioners.

Appellate Information

  • Decided
  • Published 2018/10/19


  • Williams


  • United States DC Circuit