While in those portions of the Willamette River and Columbia River that pass through or adjacent to Clackamas, Columbia, and Multnomah Counties, each ship is subject to the emission standards and rules for visible emissions and particulate matter size and must minimize soot emissions. The owner, operator or other responsible party must ensure that these standards and requirements are met.
Or. Admin. Code § 340-208-0570
Stat. Auth.: ORS 468 & ORS 468A
Stats. Implemented: ORS 468A.025