Oregon Revised Statutes Public Health and Safety § 468A.360

(1) After public hearing and in accordance with the applicable provisions of ORS chapter 183, the Environmental Quality Commission may adopt motor vehicle emission standards. For the purposes of this section, the commission may include, as a part of such standards, any standards for the control of noise emissions adopted pursuant to ORS 467.030.

(2) The commission shall furnish a copy of standards adopted pursuant to this section to the Department of Transportation and shall publish notice of the standards in a manner reasonably calculated to notify affected members of the public.