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  2. Permitting Under the Clean Air Act

Search Air Permit Policy & Guidance Databases

Since 1978, EPA has provided guidance to Regions, States and Permittees to assist in the implementation of its Clean Air Act permitting programs. This page provides the ability to search almost 1,500 documents by keyword or phrase. You can select one or more individual compilations or search all. See "Search Tips" below for suggestions on how to build your query.

Search areas:

You can also view each of the document compilations above in sortable, filterable tables.

  • New Source Review Policy & Guidance Index
  • Title V Policy & Guidance Index
  • Title V Petition Database

Search Tips

By default, a search locates documents containing the search terms specified with the terms that are entered first given more weight than the terms that come after. When you want documents containing any of several words, use commas to separate them.

For example, searching for:

1) "operating permit"

will find documents that contain the phrase operating permit.


2) operating OR permit

will find documents that contain either operating or permit. Note that the OR must be capitalized.


3) operating -permit

will find documents that contains operating and exclude documents that contain permit. Therefore, it will exclude documents that has the phrase "operating permit" in them.

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)
  • Environmental Justice and Permitting
  • CAA Permitting Tools & ​Related Resources
  • Outer Continental Shelf Air Permits
Contact Us About Permitting Under the Clean Air Act
Contact Us About Permitting Under the Clean Air Act to ask a question, provide feedback, or report a problem.
Last updated on October 16, 2024
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