EPA v. Calumet Shreveport Refining, L.L.C.

Summary

The Court held that EPA's denials of individual small‑refinery hardship exemption petitions are locally or regionally applicable actions that nevertheless fall within the Clean Air Act’s “nationwide scope or effect” exception, requiring review in the D.C. Circuit. Accordingly, the Fifth Circuit’s decision was vacated and the case remanded for proceedings in the D.C. Circuit.