The purpose of this rulemaking is to align three air quality rules:
with the August 2018 amendments to Chapter 173-400 WAC — General Regulations for Air Pollution Sources. Ecology revised Chapter 173-400 WAC to comply with EPA’s direction in the Startup-Shutdown-Malfunction State Implementation Plan Call (SSM SIP Call) (80 FR 33840).
We are also proposing other changes to address stakeholders' concerns and improve readability.
Rule proposal documents:
We write rules to implement and enforce state and federal environmental laws and rules. Ecology follows a 3-phase process for rulemaking:
- Announcement and development
For each phase of the process, we update the rulemaking web page and notify interested parties. We also file notice in the Washington State Register. To learn more about Ecology’s rulemaking process, read the Frequently Asked Questions.
Comment by mail
Department of Ecology
P.O. Box 47600
Olympia, WA 98504-7600
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