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Dive Brief:
Environmental advocacy groups have sued the Environmental Protection Agency for allegedly failing to respond to a petition challenging the renewal of a clean air permit for U.S. Steel’s largest mill in Gary, Indiana.
The plaintiffs — The Environmental Law & Policy Center, Environmental Integrity Project, Gary Advocates for Responsible Development and Just Transition Northwest Indiana — seek a court order requiring the EPA to grant or deny their petition originally filed July 3, 2025.
They argued that U.S. Steel’s Title V operating permit failed to include adequate monitoring and compliance provisions ensuring the mill can operate within certain air pollution limits. Under the Clean Air Act, the EPA has a 60-day deadline to respond to petitions. More than ten months later, the agency has yet to act on the groups’ petition, an ELPC spokesperson confirmed to Manufacturing Dive Tuesday.
