Air Quality Program

Air Operating Permits

What is an Air Operating Permit?

An Air Operating Permit is a tool for applying regulatory requirements to individual, major sources of air pollution. Regulatory requirements may include emission limits; work practice standards; and monitoring, reporting, and recordkeeping conditions. The permit combines all the applicable requirements into a single document for each source. This enables the permit holder to more easily identify permit conditions and rules. The Air Operating Permit program also requires sources to submit periodic reports certifying compliance with permit terms and conditions.

Who needs an Air Operating Permit?

A facility is required to obtain an Air Operating Permit if it has the potential to emit any of the following:

  • More than 100 tons per year of any pollutant, or
  • More than 10 tons per year of any hazardous air pollutant, or
  • More than 25 tons per year of a combination of hazardous air pollutants.

Even if a facility does not have the potential to emit the above amounts, it may still need an Air Operating Permit if it is subject to certain federal air quality requirements, including:

  • the Title IV Acid Rain Program,
  • New Source Performance Standard (NSPS), or
  • a National Emission Standard for Hazardous Air Pollutants
  • (NESHAP).

Facilities that have the potential to emit more than the thresholds for major source status, but actually emit less, can ask for and receive a legal order from the permitting authority. The order will place limits on the operation of the facility and the emissions will be limited to below the thresholds. Examples of limitations could be: limits on the hours of operation, limits on types of solvents allowed at a facility, requirements to install and use the latest air pollution control device, or changes in fuel makeup in order to be considered synthetic minor sources.

Who writes and issues the permits?

Ecology and local air quality agencies are authorized by the U.S. Environmental Protection Agency to administer the Air Operating Permit Program. Ecology publishes notice of permit actions in the Operating Permit Register.  For more information about an individual permit action listed in the Permit Register, contact the appropriate local air agency or Ecology Regional Office.

How do I get an Air Operating Permit?

  • An air operating permit facility must submit a complete Air Operating Permit Application within 12 months from the time the facility becomes subject to the permit program.
  • Ecology and local air agencies process Air Operating Permit applications according to the Operating Permit Regulation. An Air Operating Permit is issued for a five year term, and must be renewed prior to expiration. Sources must submit applications for permit renewal six to 18 months before the permit expires.

Where can I find Washington Air Operating Permits?

Regulatory Agency Jurisdiction (counties) Location/Phone
Department of Ecology: Central Regional Air Quality Office Chelan, Douglas, Kittitas, Klickitat, and Okanogan Yakima, WA (509) 575-2490
Department of Ecology: Eastern Regional Air Quality Office Adams, Asotin, Columbia, Ferry, Franklin, Garfield, Grant, Lincoln, Pend Oreille, Stevens, Walla Walla, and Whitman Spokane, WA
(509) 329-3400
Department of Ecology Industrial Section Statewide Pulp and Paper mills and Aluminum Smelters Olympia, WA
(360) 407-6916
Department of Ecology Nuclear Waste Program Hanford Reservation Richland, WA
(509) 372-7950
Benton Clean Air Authority Benton Kennewick, WA
(509) 783-1304
Northwest Clean Air Agency Island, Skagit, and Whatcom Mt. Vernon, WA (360) 428-1617
Olympic Region Clean Air Agency Clallam, Grays Harbor, Jefferson, Mason, Pacific, and Thurston Seattle, WA  (360) 586-1044
Puget Sound Clean Air Agency King, Kitsap, Pierce, and Snohomish Seattle, WA  (206) 343-8800
Southwest Clean Air Agency Clark, Cowlitz, Lewis, Skamania and Wahkiakum Vancouver, WA (360) 574-3058
Spokane Regional Clean Air Agency Spokane Spokane, WA (509) 477-4727
Yakima Regional Clean Air Authority Yakima Yakima, WA (509) 834-2050
U.S. Environmental Protection Agency (EPA) EPA/Region 10 Washington, Oregon, Idaho and Alaska Tribal Lands Seattle, WA  (206) 553-8087
State Energy Facility Site Evaluation Council Statewide Major Energy Facilities Olympia, WA (360) 956-2121 
Department of Ecology, Northwest Regional Office San Juan County Redmond, WA (425) 649-7000

PDF forms and other type documents may require one of these free readers.

Contact Us