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  1. Home
  2. Permitting Under the Clean Air Act
  3. Clean Air Act Permitting Around the Nation
  4. Pacific Southwest Region (R9)

EPA Pacific Southwest (Region 9) Electronic Permit System

EPA’s Pacific Southwest (Region 9) implements and enforces federal environmental laws in Arizona, California, Hawaii, Nevada, the Pacific Islands, and 148 Tribal Nations.

EPS Permit Hub
  • New Source Review Permits
  • Title V Permits

Return to: CAA Permitting in Region 9

The Electronic Permit System (EPS) allows state and local permitting authorities to electronically submit draft, proposed, and final permits and supporting permit documents to EPA. EPA's Permit Hub allows public online viewing of those permits and support documents, as well as of EPA comments on proposed title V permits. Note that this database is only complete where permitting authorities submit permits electronically to the EPA via EPS. When permits are not submitted through the EPS, only summary data may be available.

If a permit action is currently within the public comment period, public comments must be submitted to the relevant permitting authority and not to the EPA. Please contact the corresponding permitting authority for more detail on how to comment on a permit action. For information on EPA-issued permits, please visit Clean Air Act Permit Actions in EPA's Pacific Southwest (Region 9).

Please contact Christa Leska at leska.christa@epa.gov or (415) 972-3930 with any questions related to EPS or to EPA’s Permit Hub.

Permitting Under the Clean Air Act

  • Clean Air Act Permitting Around the Nation
    • New England Region (R1)
    • New York, New Jersey, Puerto Rico and U.S. Virgin Islands (R2)
    • Mid-Atlantic Region (R3)
    • Southeastern Region (R4)
    • Great Lakes Region (R5)
    • South Central Region (R6)
    • Midwest Region (R7)
    • Mountains and Plains Region (R8)
    • Pacific Southwest Region (R9)
      • About PSD Permitting in Region 9
      • Air Permit Delegation and PSD SIP Approval Status in Region 9
      • About NSR Permitting in Region 9
      • About Title V Permitting in Region 9
      • Electronic Permit System and Dashboards
      • Pending and Completed Permit Actions
      • Clean Air Act Permitting in Arizona
      • Clean Air Act Permitting in California
      • Clean Air Act Permitting in Hawai'i and Pacific Islands
      • Clean Air Act Permitting in Nevada
    • Pacific Northwest Region (R10)
  • CAA Permitting Tools & ​Related Resources
  • Outer Continental Shelf Air Permits
Contact Us About Permitting Under the Clean Air Act
Contact Us to ask a question, provide feedback, or report a problem.
Last updated on March 26, 2025
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