OAR 340-208-0550: Clackamas, Columbia, Multnomah, and Washington Counties: Odor Control Measures

(1) Control apparatus and equipment, using the highest and best practicable treatment currently available, must be installed and operated to reduce to a minimum odor-bearing gases or odor-bearing particulate matter emitted into the atmosphere. (2) Gas effluents from incineration operations and process after-burners installed under section (1) of this rule must be maintained at a temperature of 1,400° Fahrenheit for at least a 0.5 second residence time, or controlled in another manner determined by the department to be equally or more effective.