Sierra Club, et al. v. United States Environmental Protection Agency, et al.
Petitioner: SIERRA CLUB, CENTER FOR BIOLOGICAL DIVERSITY, NATURAL RESOURCES DEFENSE COUNCIL, INC. and PUBLIC EMPLOYEES FOR ENVIRONMENTAL RESPONSIBILITY
Respondent: UNITED STATES ENVIRONMENTAL PROTECTION AGENCY, LEE ZELDIN, in his official capacity as U.S. Environmental Protection Agency Administrator and MICHAEL MARTUCCI, in his official capacity as Acting Regional Administrator for EPA Region IX
Case Number: 26-3330
Filed: May 22, 2026
Court: U.S. Court of Appeals, Ninth Circuit
Nature of Suit: Other
Docket Report

This docket was last retrieved on May 22, 2026. A more recent docket listing may be available from PACER.

Date Filed Document Text
May 22, 2026 Filing 3 SCHEDULE NOTICE. Mediation Questionnaire due (Petitioner) 5/27/2026, Respondent Answering Brief due (Respondent) 9/9/2026, Petitioner Opening Brief due (Petitioner) 8/10/2026. All briefs shall be served and filed pursuant to FRAP 31 and 9th Cir. R. 31-2.1. Failure of the petitioner to comply with this briefing schedule will result in automatic dismissal of the appeal. See 9th Cir. R. 42-1 [Entered: 05/22/2026 03:08 PM]
May 22, 2026 Filing 2 CASE OPENED. Petition for Review has been received in the Clerk's office of the United States Court of Appeals for the Ninth Circuit on 5/22/2026. The U.S. Court of Appeals docket number 26-3330 has been assigned to this case. All communications with the court must indicate this Court of Appeals docket number. Please carefully review the docket to ensure the name(s) and contact information are correct. It is your responsibility to alert the court if your contact information changes. Resources Available For more information about case processing and to assist you in preparing your brief, please review the Case Opening Information (for #attorneys and #pro se litigants) and review the #Appellate Practice Guide. Attorneys should consider contacting the court's #Appellate Mentoring Program for help with the brief and argument. [Entered: 05/22/2026 03:06 PM]
May 22, 2026 Filing 1 PETITION FOR REVIEW filed by Petitioner Center for Biological Diversity, Petitioner Natural Resources Defense Council, Inc., Petitioner Public Employees for Environmental Responsibility, Petitioner Sierra Club. [Entered: 05/22/2026 03:04 PM]

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Search for this case: Sierra Club, et al. v. United States Environmental Protection Agency, et al.
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Petitioner: SIERRA CLUB
Represented By: Mr. Patrick Laughlin Woolsey
Represented By: David S. Baron
Represented By: Mrs. Ameya Gehi
Represented By: Alexandra Oakley Schluntz
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Petitioner: CENTER FOR BIOLOGICAL DIVERSITY
Represented By: Ryan Maher
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Petitioner: NATURAL RESOURCES DEFENSE COUNCIL, INC.
Represented By: Meredith J. Hankins
Represented By: Ms. Abirami Vijayan
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Petitioner: PUBLIC EMPLOYEES FOR ENVIRONMENTAL RESPONSIBILITY
Represented By: Ryan Maher
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Respondent: UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
Represented By: Sonya Shea
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Respondent: LEE ZELDIN, in his official capacity as U.S. Environmental Protection Agency Administrator
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Respondent: MICHAEL MARTUCCI, in his official capacity as Acting Regional Administrator for EPA Region IX
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