Costle v. Pacific Legal Foundation

445 U.S. 198 · Decided March 18, 1980 · Supreme Court of the United States

At a glance

Costle v. Pacific Legal Foundation was decided on March 18, 1980 unanimously (9–0). The Court reversed the lower court's decision. Justice Harry A. Blackmun wrote the opinion of the Court. SCDB classifies its main issue as “Natural resources and environmental protection” in the Economic Activity area.

Read the opinion

• CourtListener (Free Law Project) — opinion text
• Library of Congress — official U.S. Reports scan

Case details

How the Justices voted

Full case caption

Costle, Administrator, Environmental Protection Agency v. Pacific Legal Foundation et al.

SCDB identifiers: case 1979-052, docket 1979-052-01.

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Source: Supreme Court Database, 2026 Release 01 (data file dated September 8, 2026). Imported into CaseTrail November 5, 2026. Coverage: decisions from the 1946 through 2025 Terms. Methodology · Report an error