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Heavy-Duty Engine and Vehicle Omnibus Rule Update 2024

Proposed rule

Rulemaking contact: Eric Feeley, 503-915-2798

DEQ is conducting this rulemaking to adopt California Air Resources Board amendments to heavy-duty engine and vehicle exhaust emission standards to maintain identicality with CARB rules for new medium- and heavy-duty vehicles sold in Oregon. This rulemaking will also consider permanent adoption of a 1-year implementation delay which will replace the temporary rule adopted by the EQC on Nov. 16, 2023. This action will provide manufacturers and buyers compliance certainty and add additional flexibilities to the legacy engine sales allowances for engine model year 2025 and 2026.

DEQ plans to:

  • Hold an advisory committee meeting March/April 2024
  • Publish the notice of rulemaking and open the public comment period in April/May 2024
  • Hold a public hearing in May 2024

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

Meeting 1: April 11, 2024

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Public involvement

The comment period closed at 4 p.m. on June 24, 2024.

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

DEQ held a public hearing on June 17, 2024

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EQC action

Delegation  
At the 430th Oregon Environmental Quality Commission meeting on Jan. 24, 2024, the Environmental Quality Commission authorized delegation to Director Leah Feldon for the 2023 High Hazard Rail Tank Fee rulemaking.