Air Quality Program Rulemaking
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.
The Air Quality Program is currently working on the rulemaking listed below in numeric order.
Find a complete list of Air Quality Program closed rulemaking.
Chapter 173-442 WAC - Clean Air Rule
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