(a) Regulations adopted by the State of California for reducing diesel engine emissions from in-use medium-duty trucks and heavy-duty trucks; and
(b) The list of technologies approved as qualifying retrofits included in the standards established by the commission under ORS 468A.799.
(2) The commission shall prescribe by rule the manner for issuing certification that a diesel engine has been retrofitted with approved retrofit technology in compliance with the criteria adopted by rule under subsection (1) of this section.
(3) When proof of certification that a diesel engine has been retrofitted with approved retrofit technology is required under ORS 803.591, the proof may be provided by any means that the Department of Transportation and the commission determine by joint rulemaking or by interagency agreement to be satisfactory. Proof of certification may include, but need not be limited to, a certificate of compliance. [2019 c.645 §7]