Case: State of California v. Zeldin

3:26-cv-03500 | U.S. District Court for the Northern District of California

Filed Date: April 24, 2026

Case Ongoing

Clearinghouse coding complete

Case Summary

This case seeks to compel the Environmental Protection Agency (EPA) to issue nationwide compliance designations to identify all areas of the country that meet, or do not meet, the air quality standards under the Clean Air Act (CAA).  On April 24, 2026, the California Attorney General, along with the California Air Resources Board, ten other states, Harris County, Texas, and the City of New York, filed a lawsuit in the U.S. District Court for the Northern District of California against the EPA o…

This case seeks to compel the Environmental Protection Agency (EPA) to issue nationwide compliance designations to identify all areas of the country that meet, or do not meet, the air quality standards under the Clean Air Act (CAA). 

On April 24, 2026, the California Attorney General, along with the California Air Resources Board, ten other states, Harris County, Texas, and the City of New York, filed a lawsuit in the U.S. District Court for the Northern District of California against the EPA over its failure to implement a 2024 CAA rule that would strengthen national ambient air quality standards (NAAQS) for fine particulate matter, or soot.. The complaint explained that fine particulate matter can cause premature death, cardiovascular disease, and respiratory damage, among other impacts. Further, the complaint stated that the NAAQS could not be fully implemented until the EPA promulgated the designations. The CAA requires the EPA to promulgate new or revised NAAQS by publishing a notice in the Federal Registrar every two years. The last promulgation was on February 7, 2024, meaning the EPA missed its February 7, 2026, deadline.

Therefore, the plaintiffs alleged that the EPA failed to perform a nondiscretionary duty to promulgate area designations via Federal Registrar Notice for the 2024 ambient air quality standards, in violation of the CAA. The complaint alleged that the EPA’s failure to do so had seriously endangered public health, contravened congressional intent that the standards be implemented “as expeditiously as practicable,” and deprived states and local governments of the regulatory tools and incentives to control air pollution, including mechanisms to reduce fine particulate air matter and financial assistance. The plaintiffs sought declaratory and injunctive relief requiring the EPA to promptly promulgate all overdue designations via a notice in the Federal Registrar, as well as attorneys’ fees and costs. 

On April 24, 2026, this case was assigned to District Judge Yvonne Gonzalez Rogers. The case was reassigned to District Judge Haywood S. Gilliam, Jr. on May 5, 2026. 

The same day the complaint was filed, on April 24, 2026, California moved for summary judgment. State and Local plaintiffs moved for summary judgment on May 6, 2026. The court related the actions of the State and Local plaintiffs, allowing for coordinated summary judgment proceedings.

On May 8, 2026, the EPA moved for abeyance pending the D.C. Circuit’s decision on the legality of the 2024 PM2.5 NAAQS that were the subject of this litigation.

A hearing on the summary judgment and abeyance motions was held on June 25, 2026. On July 17, 2026, the court partially granted summary judgment to the plaintiffs and denied the defendant’s motion for abeyance. 2026 WL 2078145. The court declined to hold the matter in abeyance as the D.C. Circuit denied the EPA’s motion for vacatur and the petition to review the NAAQS, and the plaintiffs demonstrated a “fair possibility of real health harms from delaying these proceedings,” while the EPA did not make a case for hardship or inequity. On the matter of summary judgment, the EPA argued that 1) the plaintiffs lacked standing, 2) the court should decline jurisdiction under the prudential ripeness doctrine, and 3) the plaintiffs' proposed remedies were infeasible and impossible. The court found that the plaintiffs had standing and that the issue was fit for judicial decision, so the case did not fall for prudential ripeness. The court explained that summary judgment in favor of the Plaintiffs was appropriate because there was no dispute that the EPA failed in its duty to promulgate the designations. Therefore, the court ordered the EPA to promulgate final designations for all areas of the country by February 6, 2027. 

The case was terminated on July 20, 2026.

 

 

People

For PACER's information on parties and their attorneys, see: https://www.courtlistener.com/docket/73241489/parties/state-of-california-v-zeldin/


Judge(s)

Gilliam, Haywood Stirling (California)

Attorney for Plaintiff

Buttino, Nicholas C (California)

Columbia, District of (California)

Connecticut, State of (California)

Garrahan, Paul Andrew (California)

Attorney for Defendant

Documents in the Clearinghouse

Documents in this case
1

3:26-cv-03500

Complaint for Declaratory and Injunctive Relief

April 24, 2026

April 24, 2026

Complaint
75

3:26-cv-03500

Order Denying Motion For Abeyance And Granting In Part And Denying In Part Motions For Summary Judgment

State of California et al. v. Zeldin

July 17, 2026

July 17, 2026

Order/Opinion

2026 WL 2078145

Docket

See docket on RECAP: https://www.courtlistener.com/docket/73241489/state-of-california-v-zeldin/

Last updated Aug. 27, 2026, 3:18 a.m.

Docket for: State of California v. Zeldin
ECF Number Date Description Link
1 April 24, 2026

COMPLAINT COMPLAINT FOR DECLARATORY AND INJUNCTIVE RELIEF against All Defendants ( Filing fee $ 405, receipt number ACANDC-21908056.). Injunction against the US government/official or APA vacatur requested. Filed by State of California. (Attachments: # 1 Exhibit Notice of Intent Letter with Certified Label)(Harms, Micaela) (Filed on 4/24/2026) (Entered: 04/24/2026)

Clearinghouse
2 April 24, 2026

Proposed Summons. (Harms, Micaela) (Filed on 4/24/2026) (Entered: 04/24/2026)

RECAP
3 April 24, 2026

MOTION for leave to appear in Pro Hac Vice ( Filing fee $ 328, receipt number ACANDC-21908408.) filed by State of New York. (Attachments: # 1 Exhibit Certificate of Good Standing)(Buttino, Nicholas) (Filed on 4/24/2026) (Entered: 04/24/2026)

RECAP
4 April 24, 2026

NOTICE of Appearance filed by Stacy Jayne Lau on behalf of State of California (Lau, Stacy) (Filed on 4/24/2026) (Entered: 04/24/2026)

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5 April 24, 2026

NOTICE by State of California ADMINISTRATIVE MOTION TO CONSIDER WHETHER CASES SHOULD BE RELATED (Harms, Micaela) (Filed on 4/24/2026) (Entered: 04/24/2026)

RECAP
6 April 24, 2026

MOTION for leave to appear in Pro Hac Vice ( Filing fee $ 328, receipt number ACANDC-21908921.) filed by State of Wisconsin. (Attachments: # 1 Exhibit Certificate of Good Standing for Bradley J Motl)(Motl, Bradley) (Filed on 4/24/2026) (Entered: 04/24/2026)

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7 April 24, 2026

CONSENT/DECLINATION to Proceed Before a US Magistrate Judge by State of California.. (Lau, Stacy) (Filed on 4/24/2026) (Entered: 04/24/2026)

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8 April 24, 2026

First MOTION for leave to appear in Pro Hac Vice ( Filing fee $ 328, receipt number ACANDC-21909102.) filed by Commonwealth of Massachusetts. (Attachments: # 1 Certificate/Proof of Service)(Holmes, Marcus) (Filed on 4/24/2026) (Entered: 04/24/2026)

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9 April 24, 2026

MOTION for leave to appear in Pro Hac Vice ( Filing fee $ 328, receipt number ACANDC-21909527.) filed by State of Oregon. (Attachments: # 1 Supplement)(Garrahan, Paul) (Filed on 4/24/2026) (Entered: 04/24/2026)

RECAP
10 April 24, 2026

Case assigned to Judge Yvonne Gonzalez Rogers. Counsel for plaintiff or the removing party is responsible for serving the Complaint or Notice of Removal, Summons and the assigned judge's standing orders and all other new case documents upon the opposing parties. For information, visit E-Filing A New Civil Case at http://cand.uscourts.gov/ecf/caseopening.Standing orders can be downloaded from the court's web page at www.cand.uscourts.gov/judges. Upon receipt, the summons will be issued and returned electronically. A scheduling order will be sent by Notice of Electronic Filing (NEF) within two business days. (pjf, COURT STAFF) (Filed on 4/24/2026) (Entered: 04/24/2026)

RECAP
11 April 24, 2026

NOTICE of Appearance filed by Corey Maxwell Moffat on behalf of State of California by and through Attorney General Rob Bonta and the California Air Resource Board (Moffat, Corey) (Filed on 4/24/2026) (Entered: 04/24/2026)

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12 April 24, 2026

NOTICE of Appearance filed by Jonathan Andrew Wiener on behalf of State of California by and through Attorney General Rob Bonta and the California Air Resource Board (Wiener, Jonathan) (Filed on 4/24/2026) (Entered: 04/24/2026)

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13 April 24, 2026

ADMINISTRATIVE MOTION for Leave to File a Motion for Summary Judgment filed by State of California. Responses due by 4/28/2026. (Attachments: # 1 Declaration Declaration of Jonathan Wiener in support of Administrative Motion for Leave to File a Motion for Summary Judgment, # 2 Proposed Order Proposed Order Granting Administrative Motion for Leave to File Motion for Summary Judgment, # 3 Exhibit Motion for Summary Judgment, # 4 Exhibit Proposed Order Granting Motion for Summary Judgment, # 5 Exhibit Declaration of Ariel Fideldy, # 6 Exhibit Declaration of Jesse Dickerman, # 7 Exhibit Declaration of Glenn Keith, # 8 Exhibit Declaration of Ali Mirzakhalili)(Harms, Micaela) (Filed on 4/24/2026) (Entered: 04/24/2026)

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April 24, 2026

Notice of Appearance/Substitution/Change/Withdrawal of Attorney

April 24, 2026

~Util - Case Assigned by Intake

14 April 27, 2026

MOTION for leave to appear in Pro Hac Vice ( Filing fee $ 328, receipt number 7301270.) Filing fee previously paid on 4/24/2026 filed by State of Vermont. (Attachments: # 1 Supplement)(Kehne, Melanie) (Filed on 4/27/2026) (Entered: 04/27/2026)

RECAP
15 April 27, 2026

MOTION for leave to appear in Pro Hac Vice ( Filing fee $ 328, receipt number ACANDC-21912411.) Filing fee previously paid on 4/27/2026 filed by State of Connecticut. (Attachments: # 1 Certificate/Proof of Service Certificate of Good Standing)(Lacedonia, Jill) (Filed on 4/27/2026) (Entered: 04/27/2026)

RECAP
16 April 27, 2026

First MOTION for leave to appear in Pro Hac Vice ( Filing fee $ 328, receipt number ACANDC-21914581.) filed by Harris County, Texas. (Attachments: # 1 Exhibit Certificate of Good Standing)(Utley, Sarah) (Filed on 4/27/2026) (Entered: 04/27/2026)

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17 April 27, 2026

MOTION for leave to appear in Pro Hac Vice ( Filing fee $ 328, receipt number ACANDC-21914696.) filed by State of Minnesota. (Attachments: # 1 Certificate of Good Standing)(Rios-Keating, Catherine) (Filed on 4/27/2026) (Entered: 04/27/2026)

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18 April 27, 2026

MOTION for leave to appear in Pro Hac Vice ( Filing fee $ 328, receipt number ACANDC-21916074.) filed by Harris County, Texas. (Attachments: # 1 Certificate of Good Standing)(Hidalgo, Elizabeth) (Filed on 4/27/2026) (Entered: 04/27/2026)

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19 April 29, 2026

First MOTION for leave to appear in Pro Hac Vice Lyle Leonard ( Filing fee $ 328, receipt number ACANDC-21911199.) Filing fee previously paid on 4/24/2026 filed by State of Hawaii. (Attachments: # 1 Declaration)(Leonard, Lyle) (Filed on 4/29/2026) (Entered: 04/29/2026)

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20 April 30, 2026

Initial Case Management Scheduling Order with ADR Deadlines: Case Management Statement due by 7/20/2026. Initial Case Management Conference set for 7/27/2026 at 02:00 PM in Oakland, via Videoconference Only. Notice: The assigned judge participates in the Cameras in the Courtroom Pilot Project. See General Order 65 and cand.uscourts.gov/cameras. (Attachments: # 1 Notice of Eligibility for Video Recording)(slh, COURT STAFF) (Filed on 4/30/2026)Any non-CM/ECF Participants have been served by First Class Mail to the addresses of record listed on the Notice of Electronic Filing (NEF) (Entered: 04/30/2026)

RECAP
21 April 30, 2026

Summons Issued as to Lee Zeldin. (slh, COURT STAFF) (Filed on 4/30/2026) (Entered: 04/30/2026)

RECAP
22 May 1, 2026

CERTIFICATE OF SERVICE by State of California re 13 ADMINISTRATIVE MOTION for Leave to File a Motion for Summary Judgment (Harms, Micaela) (Filed on 5/1/2026) (Entered: 05/01/2026)

RECAP
23 May 1, 2026

CERTIFICATE OF SERVICE by State of California re 5 ADMINISTRATIVE MOTION to Consider Whether Cases Should Be Related (Harms, Micaela) (Filed on 5/1/2026) (Entered: 05/01/2026)

RECAP
24 May 4, 2026

RELATED CASE ORDER RE DOCKET NO. 5 by Judge Haywood S. Gilliam, Jr. (ndr, COURT STAFF) (Filed on 5/4/2026) (Entered: 05/04/2026)

RECAP
25 May 4, 2026

APPLICATION FOR ADMISSION OF ATTORNEY PRO HAC VICE; ORDER by Judge Yvonne Gonzalez Rogers Granting 3 Motion for Pro Hac Vice (Nicholas C. Buttino). (eac, COURT STAFF) (Filed on 5/4/2026) (Entered: 05/04/2026)

RECAP
26 May 4, 2026

APPLICATION FOR ADMISSION OF ATTORNEY PRO HAC VICE; ORDER by Judge Yvonne Gonzalez Rogers Granting 8 Motion for Pro Hac Vice (Marcus Dijuan Holmes). (eac, COURT STAFF) (Filed on 5/4/2026) (Entered: 05/04/2026)

RECAP
27 May 4, 2026

APPLICATION FOR ADMISSION OF ATTORNEY PRO HAC VICE; ORDER by Judge Yvonne Gonzalez Rogers Granting 6 Motion for Pro Hac Vice (Bradley J. Motl). (eac, COURT STAFF) (Filed on 5/4/2026) (Entered: 05/04/2026)

RECAP
28 May 4, 2026

APPLICATION FOR ADMISSION OF ATTORNEY PRO HAC VICE; ORDER by Judge Yvonne Gonzalez Rogers Granting 9 Motion for Pro Hac Vice (Paul Garrahan). (eac, COURT STAFF) (Filed on 5/4/2026) (Entered: 05/04/2026)

RECAP
29 May 4, 2026

APPLICATION FOR ADMISSION OF ATTORNEY PRO HAC VICE; ORDER by Judge Yvonne Gonzalez Rogers Granting 14 Motion for Pro Hac Vice (Melanie Kehne). (eac, COURT STAFF) (Filed on 5/4/2026) (Entered: 05/04/2026)

RECAP
30 May 4, 2026

APPLICATION FOR ADMISSION OF ATTORNEY PRO HAC VICE; ORDER by Judge Yvonne Gonzalez Rogers Granting 15 Motion for Pro Hac Vice (Jill Lacedonia). (eac, COURT STAFF) (Filed on 5/4/2026) (Entered: 05/04/2026)

RECAP
31 May 4, 2026

APPLICATION FOR ADMISSION OF ATTORNEY PRO HAC VICE; ORDER by Judge Yvonne Gonzalez Rogers Granting 16 Motion for Pro Hac Vice (Sarah Jane Utley). (eac, COURT STAFF) (Filed on 5/4/2026) (Entered: 05/04/2026)

RECAP
32 May 4, 2026

APPLICATION FOR ADMISSION OF ATTORNEY PRO HAC VICE; ORDER by Judge Yvonne Gonzalez Rogers Granting 17 Motion for Pro Hac Vice (Catherine Rios-Keating). (eac, COURT STAFF) (Filed on 5/4/2026) (Entered: 05/04/2026)

RECAP
33 May 4, 2026

APPLICATION FOR ADMISSION OF ATTORNEY PRO HAC VICE; ORDER by Judge Yvonne Gonzalez Rogers Granting 18 Motion for Pro Hac Vice (Elizabeth Hidalgo). (eac, COURT STAFF) (Filed on 5/4/2026) (Entered: 05/04/2026)

RECAP
34 May 4, 2026

APPLICATION FOR ADMISSION OF ATTORNEY PRO HAC VICE; ORDER by Judge Yvonne Gonzalez Rogers Granting 19 Motion for Pro Hac Vice (Lyle T. Leonard). (eac, COURT STAFF) (Filed on 5/4/2026) (Entered: 05/04/2026)

RECAP
35 May 5, 2026

ORDER REASSIGNING CASE IT IS ORDERED that this case is directly assigned to Judge Haywood S Gilliam, Jr. Judge Yvonne Gonzalez Rogers no longer assigned to the case. Counsel are instructed that all future filings shall bear the updated judicial initials immediately after the case number. Counsel are reminded to verify the location of the judge on the court website. All hearing and trial dates presently scheduled are vacated. However, existing briefing schedules for motions remain unchanged. Motions must be renoticed for hearing before the judge to whom the case has been reassigned, but the renoticing of the hearing does not affect the prior briefing schedule. Other deadlines such as those for ADR compliance and discovery cutoff also remain unchanged. Mark B. Busby Clerk, United States District Court (This is a text-only entry generated by the court. There is no document associated with this entry.) (dso, COURT STAFF) (Filed on 5/5/2026) (Entered: 05/05/2026)

RECAP
36 May 5, 2026

ADMINISTRATIVE MOTION LEAVE TO FILE MOTION FOR SUMMARY JUDGMENT filed by State of California. Responses due by 5/11/2026. (Attachments: # 1 Stipulation, # 2 Proposed order granting administrative motion for leave to file a motion for summary judgment, # 3 Motion for summary judgment, # 4 Fideldy Declaration, # 5 Dickerman Declaration, # 6 Keith Declaration, # 7 Mirzakhalili Declaration, # 8 Proposed order granting motion for summary judgment)(Harms, Micaela) (Filed on 5/5/2026) (Entered: 05/05/2026)

RECAP
May 5, 2026

Case Assigned/Reassigned

37 May 6, 2026

CLERK'S NOTICE SETTING CASE MANAGEMENT CONFERENCE FOR REASSIGNED CIVIL CASE.Notice is hereby given that a Case Management Conference has been set via zoom for July 28, 2026, before Judge Haywood S. Gilliam, Jr., at 2:00 p.m. Case Management Statement due by July 21st. Standing orders can be downloaded from the court's web page at www.cand.uscourts.gov/judges. All future filings should reflect the case number as 4:26-cv-03500-HSG. All attorneys and pro se litigants appearing for the case management conference are required to join at least 15 minutes before the hearing to check-in with the CRD. Webinar Access: All counsel, members of the public, and media may access the webinar information at https://www.cand.uscourts.gov/hsg Civ LR 77-3(d). Persons granted access to court proceedings held by telephone or videoconference are reminded that photographing, recording, and rebroadcasting of court proceedings, including screenshots or other visual copying of a hearing, is absolutely prohibited.Zoom Guidance and Setup: https://cand.uscourts.gov/zoom. (This is a text-only entry generated by the court. There is no document associated with this entry.)(ndr, COURT STAFF) (Filed on 5/6/2026) (Entered: 05/06/2026)

RECAP
38 May 6, 2026

ORDER by Hon. Haywood S. Gilliam, Jr. GRANTING Plaintiffs leave to file a motion for summary judgment with a hearing date noticed for June 25, 2026. Plaintiffs must file their motion as a separate entry on the docket by May 7, 2026. This order TERMINATES Dkt. Nos. 13 and 36 . (This is a text-only entry generated by the court. There is no document associated with this entry.) (hsglc3, COURT STAFF) (Filed on 5/6/2026) (Entered: 05/06/2026)

RECAP
39 May 6, 2026

NOTICE of Appearance filed by Rachel Dorothy Martinez on behalf of Lee Zeldin (Martinez, Rachel) (Filed on 5/6/2026) (Entered: 05/06/2026)

RECAP
40 May 6, 2026

MOTION for Summary Judgment filed by State of California. Motion for Summary Judgment Hearing set for 6/25/2026 02:00 PM before Judge Haywood S Gilliam Jr.. Responses due by 6/1/2026. Replies due by 6/11/2026. (Attachments: # 1 ATTACHEMENT A DECLARATION OF ARIEL FIDELDY, CALIFORNIA AIR RESOURCES BOARD, # 2 ATTACHEMENT B DECLARATION OF JESSE DICKERMAN, HARRIS COUNTY, TEXAS, IN SUPPORT OF STATE AND LOCAL GOVERNMENT PLAINTIFFS MOTION FOR SUMMARY JUDGMENT, # 3 ATTACHMENT C DECLARATION OF GLENN KEITH, # 4 ATTACHEMENT D DECLARATION OF ALI MIRZAKHALILI IN SUPPORT OF PLAINTIFFS MOTIN FOR SUMMARY JUDGEMENT, # 5 Proposed Order GRANTING MOTION FOR SUMMARY JUDGMENT, # 6 Certificate/Proof of Service)(Harms, Micaela) (Filed on 5/6/2026) (Entered: 05/06/2026)

RECAP
May 6, 2026

Clerk's Notice AND ~Util - Teleconference Zoom

May 6, 2026

Notice of Appearance/Substitution/Change/Withdrawal of Attorney

May 6, 2026

Order on Administrative Motion per Civil Local Rule 7-11 AND Order on Administrative Motion per Civil Local Rule 7-11

41 May 7, 2026

ORDER by Hon. Haywood S. Gilliam, Jr. SETTING the parties' proposed briefing schedule for Dkt. No 40, as per Dkt. No. 36-1. Defendant's response is due by June 1, 2026. Plaintiffs' reply is due by June 11, 2026. (This is a text-only entry generated by the court. There is no document associated with this entry.) (hsglc3, COURT STAFF) (Filed on 5/7/2026) (Entered: 05/07/2026)

RECAP
May 7, 2026

Order

42 May 8, 2026

STIPULATION REGARDING CONSOLIDATION OF STATE OF CALIFORNIA AND ALLIANCE OF NURSES FOR HEALTHY ENVIRONMENTS filed by State of California. (Harms, Micaela) (Filed on 5/8/2026) (Entered: 05/08/2026)

RECAP
43 May 8, 2026

ADMINISTRATIVE MOTION Leave to File Opposition to EPA's Motion for Abeyance in Alliance of Nurses for Healthy Environments filed by State of California. Responses due by 5/15/2026. (Attachments: # 1 Exhibit Stipulation Regarding State and Local Government Plaintiffs' Administrative Motion for Leave to File Opposition to Defendant's Motion for Abeyance in Alliance of Nurses for Healthy Environments, # 2 Exhibit Plaintiffs' Opposition to Defendant's Motion for Abeyance, # 3 Proposed Order)(Lau, Stacy) (Filed on 5/8/2026) (Entered: 05/08/2026)

RECAP
44 May 11, 2026

ORDER by Hon. Haywood S. Gilliam, Jr. GRANTING Dkt. No. 43 . Plaintiffs must file their opposition as a separate entry on the docket by May 12, 2026. Defendant's reply is due by May 15, 2026. (This is a text-only entry generated by the court. There is no document associated with this entry.) (hsglc3, COURT STAFF) (Filed on 5/11/2026) (Entered: 05/11/2026)

RECAP
45 May 11, 2026

CLERK'S NOTICE SETTING CASE MANAGEMENT CONFERENCE RE DOCKET NO. 42 IN CASE NO. 26-cv-3500-HSG.Notice is hereby given that a Case Management Conference has been set via zoom for May 12, 2026 before Judge Haywood S. Gilliam, Jr., at 2:00 p.m. The zoom information and instructions remain the same as previously provided in docket no. 37 in case no. 26-cv-3500-HSG. (This is a text-only entry generated by the court. There is no document associated with this entry.) (ndr, COURT STAFF) (Filed on 5/11/2026) (Entered: 05/11/2026)

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46 May 11, 2026

AMENDED ORDER by Hon. Haywood S. Gilliam, Jr. GRANTING Dkt. No. 43 in Case No. 26-cv-3500. Plaintiffs from Case No. 26-cv-3500 must file their opposition to the motion for abeyance as a separate entry on the docket for Case No. 26-cv-3118 by May 12, 2026. Defendant's reply is due by May 15, 2026. (This is a text-only entry generated by the court. There is no document associated with this entry.) (hsglc3, COURT STAFF) (Filed on 5/11/2026) (Entered: 05/11/2026)

RECAP
May 11, 2026

Order on Administrative Motion per Civil Local Rule 7-11

May 11, 2026

Set Motion and Deadlines/Hearings

May 11, 2026

Clerk's Notice

May 11, 2026

Order

May 11, 2026

Reset Deadlines as to Docket No. 31 in case no. 4:26-cv-03118-HSG, See Docket No. 44 : Responses due by 5/12/2026. Replies due by 5/15/2026. (ndr, COURT STAFF) (Filed on 5/11/2026) Modified on 5/11/2026 to add Docket No. 31 in case no. 4:26-cv-03118-HSG and remove msj (ndr, COURT STAFF).

May 11, 2026

Reset Deadlines as to 40 MOTION for Summary Judgment, See Docket No. 41 : Responses due by 6/1/2026. Replies due by 6/11/2026. Previous deadlines set re docket no. 44 pertained to docket no. 31 in case no. 4:26-cv-03118-HSG. (ndr, COURT STAFF) (Filed on 5/11/2026)

47 May 12, 2026

Minute Entry for proceedings held before Judge Haywood S. Gilliam, Jr.: Initial Case Management Conference held via zoom on 5/12/2026.Total Time in Court: 10 Minutes. Not Reported or Recorded. Plaintiff Attorney: Micaela Harms; Seth Johnson; Sage Lincoln; Colin O'Brien; Jonathan Wiener; and Stacy Lau. Defendant Attorney: Rachel Martinez. The Court orders the parties to e-file a detailed proposed consolidation order within one week from today (May 19, 2026). (This is a text-only entry generated by the court. There is no document associated with this entry.) (ndr, COURT STAFF) (Date Filed: 5/12/2026) (Entered: 05/13/2026)

RECAP
May 13, 2026

Case Management Conference - Initial

48 May 19, 2026

NOTICE OF LODGING PROPOSED ORDER COORDINATING CASES by Lee Zeldin. (Attachments: # 1 Proposed Order)(Martinez, Rachel) (Filed on 5/19/2026) Modified on 5/20/2026 to edit docket text (ndr, COURT STAFF). (Entered: 05/19/2026)

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49 May 20, 2026

CLERK'S NOTICE RE DOCKET NOS. 45 IN CASE NO. 26-CV-3118-HSG AND 48 IN 26-CV-3500-HSG. In the future when e-filing this kind of document. The correct event to use is Notice (Other). (This is a text-only entry generated by the court. There is no document associated with this entry.) (ndr, COURT STAFF) (Filed on 5/20/2026) (Entered: 05/20/2026)

RECAP
May 20, 2026

Clerk's Notice

50 May 21, 2026

ORDER by Hon. Haywood S. Gilliam, Jr. REGARDING Dkt. Nos. 45 in 26-cv-3118 and 48 in 26-cv-3500. The parties have requested 50 pages for the consolidated summary judgment opposition. This does not reflect the intended efficiency of coordination, and the Court expects that 40 pages is likely sufficient. The parties are DIRECTED by May 27, 2026, to file either (1) a new proposed order adopting a 40-page limit for the consolidated opposition; or (2) an explanation for why 50 pages are needed. In addition, the Court notes that the parties should plan to comply with their agreed-upon MSJ briefing schedule regardless of the pending motion for abeyance. (This is a text-only entry generated by the court. There is no document associated with this entry.) (hsglc3, COURT STAFF) (Filed on 5/21/2026) (Entered: 05/21/2026)

RECAP
May 21, 2026

Order

51 May 26, 2026

Proposed Order re 50 Order,,, Granting Coordination of Cases by Lee Zeldin. (Martinez, Rachel) (Filed on 5/26/2026) (Entered: 05/26/2026)

RECAP
52 May 27, 2026

ORDER GRANTING COORDINATION OF CASES. Signed by Judge Haywood S. Gilliam, Jr. on 5/27/2026. Reset Deadlines as to (Docket Nos. 16 in 4:26-cv-03118-HSG and 40 in 4:26-cv-03500-HSG) MOTION for Summary Judgment: Responses due by 6/1/2026. Replies due by 6/11/2026.(ndr, COURT STAFF) (Filed on 5/27/2026) (Entered: 05/27/2026)

RECAP
53 June 1, 2026

OPPOSITION/RESPONSE (re 40 MOTION for Summary Judgment ) filed byLee Zeldin. (Attachments: # 1 Exhibit A: November 2025 Declaration of Aaron Szabo, # 2 Exhibit B: Table of Counties or Areas Referenced in NGO Plaintiffs Declarations, # 3 Exhibit C: June 2026 Declaration of Aaron Szabo)(Martinez, Rachel) (Filed on 6/1/2026) (Entered: 06/01/2026)

RECAP
54 June 11, 2026

REPLY (re 40 MOTION for Summary Judgment ) STATE AND LOCAL GOVERNMENT PLAINTIFFS REPLY IN SUPPORT OF MOTION FOR SUMMARY JUDGMENT filed byState of California. (Attachments: # 1 Declaration SECOND DECLARATION OF ARIEL FIDELDY, CALIFORNIA AIR RESOURCES BOARD)(Harms, Micaela) (Filed on 6/11/2026) (Entered: 06/11/2026)

1 Declaration SECOND DECLARATION OF ARIEL FIDELDY, CALIFORNIA AIR RESOURCES BOARD

View on PACER

RECAP
55 June 12, 2026

CERTIFICATE OF SERVICE by State of California re 2 Proposed Summons, 1 Complaint,, STANDING ORDER IN CIVIL CASES; NOTICE OF AVAILABILITY OF MAGISTRATE JUDGE TO EXERCISE JURISDICTION (Harms, Micaela) (Filed on 6/12/2026) (Entered: 06/12/2026)

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56 June 23, 2026

AMENDED COMPLAINT FIRST FOR DECLARATORY AND INJUNCTIVE RELIEF against Lee Zeldin. Filed by State of California. (Attachments: # 1 Exhibit 1, # 2 Exhibit 2, # 3 Certificate/Proof of Service)(Harms, Micaela) (Filed on 6/23/2026) (Entered: 06/23/2026)

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57 June 24, 2026

STIPULATION WITH PROPOSED ORDER filed by State of California. (Johnson, Seth) (Filed on 6/24/2026) (Entered: 06/24/2026)

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58 June 25, 2026

Refiled as Docket No. 61 . MOTION for leave to appear in Pro Hac Vice ( Filing fee $ 328, receipt number ACANDC-22139650.) filed by State of Rhode Island. (Vaz, Nicholas) (Filed on 6/25/2026) Modified on 6/25/2026 (ndr, COURT STAFF). (Entered: 06/25/2026)

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59 June 25, 2026

ORDER by Judge Haywood S. Gilliam, Jr. GRANTING (Docket Nos. 54 in case 4:26-cv-03118-HSG; 57 in case 4:26-cv-03500-HSG) Stipulation. (ndr, COURT STAFF) (Filed on 6/25/2026) (Entered: 06/25/2026)

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60 June 25, 2026

CLERK'S NOTICE RE DOCKET NO. 58 . Information on the application must match the information on the docket. Your local co-counsel's name as listed on the application doesn't match the docket. Either update the docket or e-file a revised application (with attachments) with the correct information reflected on it. If you update the docket, please send the CRD an e-mail to alert her.A smaller font should also be used so that the the entire address is visible including city,state, and zip code. (This is a text-only entry generated by the court. There is no document associated with this entry.) (ndr, COURT STAFF) (Filed on 6/25/2026) (Entered: 06/25/2026)

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61 June 25, 2026

MOTION for leave to appear in Pro Hac Vice ( Filing fee $ 328, receipt number 6519040.) Filing fee previously paid on 06/25/2026 filed by State of Rhode Island. (Vaz, Nicholas) (Filed on 6/25/2026) (Entered: 06/25/2026)

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62 June 25, 2026

Joinder re 54 Reply to Opposition/Response, 40 MOTION for Summary Judgment PLAINTIFF STATE OF RHODE ISLAND by State of California. (Harms, Micaela) (Filed on 6/25/2026) (Entered: 06/25/2026)

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63 June 25, 2026

CERTIFICATE OF SERVICE by State of California re 56 Amended Complaint (Harms, Micaela) (Filed on 6/25/2026) (Entered: 06/25/2026)

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64 June 25, 2026

ORDER by Judge Haywood S. Gilliam, Jr. GRANTING 61 Motion for Pro Hac Vice for Nicholas M. Vaz.Docket No. 58 TERMINATED, Refiled as Docket No. 61 . (ndr, COURT STAFF) (Filed on 6/25/2026)

Clearinghouse
65 June 25, 2026

ORDER by Hon. Haywood S. Gilliam, Jr. REGARDING Dkt. Nos. 31 in 26-cv-3118 and 40 in 26-cv-3500. At oral argument and in its briefing, Defendant has represented that it cannot provide a timeline for promulgating the designations at issue in this case given its unresolved arguments. See No. 26-cv-3118, Dkt. No. 50 at 24. If Defendant wishes to provide the Court with an estimated timeline, broken out by the amount of time each of the steps described in Dkt. No. 50-3 at paragraphs 16-28 would take to complete with urgency and diligence, it must do so in supplemental briefing of no more than seven pages by July 2, 2026. Plaintiffs in both cases will have until July 9, 2026, to file any response of no more than ten pages, combined. (This is a text-only entry generated by the court. There is no document associated with this entry.) (hsglc3, COURT STAFF) (Filed on 6/25/2026) (Entered: 06/25/2026)

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66 June 25, 2026

Minute Entry for proceedings held before Judge Haywood S. Gilliam, Jr.: Motion Hearing held on 6/25/2026. Total Time in Court: 47 minutes. Court Reporter: Andrea Bluedorn appearing via zoom. Plaintiff Attorney: Jonathan Wiener and Sage Lincoln. Defendant Attorney: Rachel Martinez. Motions for summary judgment and motion for abeyance (docket nos. 16 and 31 in case no. 4:26-cv-03118-HSG and 40 in case no. 4:26-cv-03500-HSG) are argued and submitted by the parties and taken under submission by the Court. Written order to issue. (This is a text-only entry generated by the court. There is no document associated with this entry.) (ndr, COURT STAFF) (Date Filed: 6/25/2026) (Entered: 06/26/2026)

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June 25, 2026

Clerk's Notice

June 25, 2026

Order

June 26, 2026

Motion Hearing

67 June 30, 2026

TRANSCRIPT ORDER for proceedings held on 06/25/2026 before Judge Haywood S Gilliam, Jr by State of California, for Court Reporter Andrea Bluedorn. (Harms, Micaela) (Filed on 6/30/2026) (Entered: 06/30/2026)

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68 July 2, 2026

STIPULATION WITH PROPOSED ORDER to Continue Case Management Conference and Associated Case Management Deadlines filed by Lee Zeldin. (Martinez, Rachel) (Filed on 7/2/2026) (Entered: 07/02/2026)

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69 July 2, 2026

Supplemental Brief on the Necessary Timeline for Promulgation of Designations filed byLee Zeldin. (Attachments: # 1 Declaration of Aaron Szabo)(Martinez, Rachel) (Filed on 7/2/2026) (Entered: 07/02/2026)

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70 July 2, 2026

ORDER by Judge Haywood S. Gilliam, Jr. GRANTING (Docket Nos. 61 in case 4:26-cv-03118-HSG and 68 case 4:26-cv-03500-HSG) Stipulation to Continue Case Management Conference and Associated Case Management Deadlines. (ndr, COURT STAFF) (Filed on 7/2/2026) (Entered: 07/02/2026)

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July 2, 2026

***Deadlines TERMINATED, See Docket Nos. 70 in 4:26-cv-03500-HSG and 63 in 4:26-cv-03118-HSG.*** (ndr, COURT STAFF) (Filed on 7/2/2026)

71 July 3, 2026

Transcript of Proceedings held on 6-25-26, before Judge Haywood S. Gilliam, Jr.. Court Reporter/Transcriber Andrea Bluedorn, telephone number Phone: 715-965-2298. Email: andrea_bluedorn@cand.uscourts.gov. Per General Order No. 59 and Judicial Conference policy, this transcript may be viewed only at the Clerk's Office public terminal or may be purchased through the Court Reporter/Transcriber until the deadline for the Release of Transcript Restriction. After that date it may be obtained through PACER. Any Notice of Intent to Request Redaction, if required, is due no later than 5 business days from date of this filing. (Re (67 in 4:26-cv-03500-HSG) Transcript Order ) Release of Transcript Restriction set for 10/1/2026. (Bluedorn, Andrea) (Filed on 7/3/2026) (Entered: 07/03/2026)

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72 July 7, 2026

TRANSCRIPT ORDER for proceedings held on 06/25/2026 before Judge Haywood S Gilliam, Jr by Lee Zeldin, for Court Reporter Andrea Bluedorn. (Martinez, Rachel) (Filed on 7/7/2026) (Entered: 07/07/2026)

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73 July 8, 2026

ANSWER to Amended Complaint by Lee Zeldin. (Martinez, Rachel) (Filed on 7/8/2026) (Entered: 07/08/2026)

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74 July 9, 2026

RESPONSE re 69 Supplemental Brief by City of New York, Commonwealth of Massachusetts, District of Columbia, Harris County, Texas, State of California, State of Connecticut, State of Hawaii, State of Maryland, State of Minnesota, State of New York, State of Oregon, State of Rhode Island, State of Vermont, State of Wisconsin. (Wiener, Jonathan) (Filed on 7/9/2026) (Entered: 07/09/2026)

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75 July 17, 2026

Order on Motion for Miscellaneous Relief AND Order on Motion for Summary Judgment AND Order on Motion for Summary Judgment

Clearinghouse
76 July 20, 2026

Judgment - Clerk

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July 20, 2026

Terminate Civil Case

77 July 31, 2026

Extension of Time to File Document

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78 July 31, 2026

ORDER by Judge Haywood S. Gilliam, Jr. GRANTING 77 Motion for Extension of Time to File Bill of Costs and Move for Attorneys' Fees. Motions due by 12/1/2026. (ndr, COURT STAFF) (Filed on 7/31/2026)

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Case Details

State / Territory:

California

Case Type(s):

Environmental Justice

Special Collection(s):

Trump Administration 2.0: Challenges to the Government

Key Dates

Filing Date: April 24, 2026

Case Ongoing: Yes

Plaintiffs

Plaintiff Description:

The State of California, along with ten other states, the District of Columbia, Harris County (Texas), and the City of New York

Public Interest Lawyer: No

Filed Pro Se: No

Class Action Sought: No

Class Action Outcome: Not sought

Defendants

Federal

United States Environmental Protection Agency

Case Details

Causes of Action:

Clean Air Act, 42 U.S.C. §7401 et seq.

Other Dockets:

Northern District of California 3:26-cv-03500

Special Case Type(s):

Multi-District Litigation (MDL)

Available Documents:

Any published opinion

Complaint (any)

Trial Court Docket

Outcome

Prevailing Party: Plaintiff OR Mixed

Relief Sought:

Attorneys fees

Declaratory judgment

Injunction

Relief Granted:

Declaratory Judgment

Injunction / Injunctive-like Settlement

Source of Relief:

Litigation

Content of Injunction:

Post/Distribute Notice of Rights / EE Law

Recommended Citation