- Climate Litigation Database
- /
- Search
- /
- United States
- /
- District of Columbia
- /
- Environmental Defense Fund v. Zeldin
Environmental Defense Fund v. Zeldin
Geography
Year
2026
Document Type
Litigation
Part of
About this case
Filing year
2026
Status
Petition for review filed.
Geography
Docket number
26-1152
Court/admin entity
United States → United States Federal Courts → United States Court of Appeals for the District of Columbia (D.C. Cir.)
Case category
Federal Statutory Claims (US) → Clean Air Act (US) → Environmentalist Lawsuits (US)
Principal law
United States → Clean Air Act (CAA)
At issue
Challenge to final EPA rule amending the New Source Performance Standards and Emission Guidelines for Existing Sources for the Crude Oil and Natural Gas Source Category in response to petitions for reconsideration of a March 2024 final rule.
Documents
Filing Date
Document
Type
Search results
06/08/2026
Petition for review filed.
Environmental Defense Fund filed a petition for review in the D.C. Circuit Court of Appeals challenging EPA’s April 2026 final rule amending the New Source Performance Standards and Emission Guidelines for Existing Sources for the Crude Oil and Natural Gas Source Category in response to petitions for reconsideration of a March 2024 final rule. EPA described the April 2026 amendments as making “discrete technical changes to the temporary flaring provisions for associated gas in certain situations” and finalizing “discrete technical changes to the vent gas net heating value (NHV) continuous monitoring requirements and alternative performance test (sampling demonstration) option for flares and enclosed combustion device(s).”
Petition
–
Summary
Challenge to final EPA rule amending the New Source Performance Standards and Emission Guidelines for Existing Sources for the Crude Oil and Natural Gas Source Category in response to petitions for reconsideration of a March 2024 final rule.