UPDATE: Ecology's new website will be live on Monday morning! Our official web address will be https://ecology.wa.gov

Program Template photo identifier

Air Quality Program

Air Quality Program Rulemaking

Law books

Ecology follows a 3-phase process for rulemaking:   announcement, proposal, and adoption. For each phase of the process, we update the rulemaking web page and send notice to interested parties. We also file notice in the Washington State Register. To learn more about Ecology’s rulemaking process, read the Frequently Asked Questions.

Open Rulemaking

The Air Quality Program is currently working on the rulemaking listed below in numeric order.

Closed Rulemaking

Find a complete list of Air Quality Program closed rulemaking.

Recently Closed: Chapter 173-442 WAC - Clean Air Rule
—  Chapter 173-441 WAC - Reporting of Emissions of Greenhouse Gases

Contact us


Ecology Rulemaking

Ecology Rules (WAC)

Ecology Laws (RCW)


Air Quality Program
   Rules Coordinator:
Jason Alberich
(360) 407-6082