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Cleaner Air Oregon and Air Toxics Alignment and Updates 2021

Adopted rule

Administrative Order: DEQ-18-2021
Filed and Effective: Nov. 17, 2021
See Oregon Bulletin - December 2021

Rule contact: Appollonia Goeckner, 503-869-0026

The Environmental Quality Commission adopted rules to integrate the recently established Cleaner Air Oregon program with the original Oregon Air Toxics program, adopted in 2003. The rulemaking:

  • Strengthens the process for setting and revising toxicity values for toxic air contaminants

  • Aligns DEQ’s Air Toxics Program OAR 340-246 and the recently established Cleaner Air Oregon Program OAR 340-245

  • Clarifies certain CAO requirements for facilities and address inefficiencies in the risk assessment process.

Key resources


​​DEQ is convening an advisory committee to review the technical issues and fiscal impacts related to the proposed rules. In convening this committee, DEQ has appointed members that reflect the range of entities that are both directly and indirectly affected by proposed changes to the rules.


​​Previous meetings

Meeting 3: May 3, 2021

Meeting 2:
Meeting 1:

Comments Received from Advisory Committee Members

Public involvement

The comment period for this rulemaking closed on Aug. 20, 2021 at 4 p.m.

For more information, see the Notice of Proposed Rulemaking and Draft Rules, which includes the notice, proposed rules and supporting documents.

Public hearing

DEQ held one public hearing on July 20, 2021.

Sign up for email or text updates on this rulemaking via GovDelivery. 

EQC action

This Environmental Quality Commission adopted these rules at its meeting on Wednesday, Nov. 17, 2021.