Chapters 173-442 and 173-441 WAC

Clean Air Rule - Chapter 173-442 WAC 
Reporting of Emissions of Greenhouse Gases - Chapter 173-441 WAC

Public Involvement



Jason Alberich
(360) 407-6082

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Washington Clean Air Act

On September 15, 2016, Ecology adopted Chapter 173-442 WAC, Clean Air Rule (CAR) and amended Chapter 173-441 WAC, Reporting of Emissions of Greenhouse Gases. Over the past year, Ecology held numerous educational events around the state, including several online forums and four public hearings. During the public comment period, Ecology received over 3,000 comments. Ecology prepared a Concise Explanatory Statement with responses to the comments.

Comments Received

Public Hearings and Webinars

Ecology hosted a series of public hearings and webinars, with presentations and question-and-answer sessions. Oral comments were accepted during the public hearings.

Public hearings:

Informational webinars:

  • Thursday, June 23, 2016 (recording and slides)
  • Wednesday, November 18, 2015 (recording* and slides)
  • Monday, September 28, 2015 (recording and slides)

* Due to technical difficulties, the first 12 minutes of this video is from the same presentation given earlier to a different audience.

About the rule

 Accessibility (ADA)

For special accommodations or documents in alternate format, call 360-407-6800, 711 (relay service), or 877-833-6341 (TTY). Ecology's ADA Accessibility page.

Para información en español acerca del cambio climático global o la Regla de Aire Limpio, favor de contactar a Gretchen Newman, (360) 407-6097 o

For questions in languages other than English or Spanish, please contact Jason Alberich at (360) 407-6082 and we will connect with you through an interpreter.