OAR 340-226-0100
Highest and Best Practicable Treatment and Control: Policy and Application
(1)
As specified in OAR 340-226-0110 (Highest and Best Practicable Treatment and Control: Pollution Prevention) through 340-226-0140 (Highest and Best Practicable Treatment and Control: Additional Control Requirements for Stationary Sources of Air Contaminants) and sections (2) through (5), the highest and best practicable treatment and control of air contaminant emissions must in every case be provided so as to maintain overall air quality at the highest possible levels, and to maintain contaminant concentrations, visibility reduction, odors, soiling and other deleterious factors at the lowest possible levels. In the case of sources installed, constructed, or modified after June 1, 1970, particularly those located in areas with existing high air quality, the degree of treatment and control provided must be such that degradation of existing air quality is minimized to the greatest extent possible.(2)
A source is in compliance with section (1) if the source is in compliance with all other applicable emission standards and requirements contained in OAR 340 divisions 200 through 268.(3)
The EQC may adopt additional rules as necessary to ensure that the highest and best practicable treatment and control is provided as specified in section (1). Such rules may include, but are not limited to, requirements:(a)
Applicable to a source category, regulated pollutant or geographic area of the state;(b)
Necessary to protect public health and welfare for air contaminants that are not otherwise regulated by the EQC; or(c)
Necessary to address the cumulative impact of sources on air quality.(4)
The EQC encourages the owner or operator of a source to further reduce emissions from the source beyond applicable control requirements where feasible.(5)
Nothing in OAR 340-226-0100 (Highest and Best Practicable Treatment and Control: Policy and Application) through 340-226-0140 (Highest and Best Practicable Treatment and Control: Additional Control Requirements for Stationary Sources of Air Contaminants) revokes or modifies any existing permit term or condition unless or until DEQ revokes or modifies the term or condition by a permit revision.
Source:
Rule 340-226-0100 — Highest and Best Practicable Treatment and Control: Policy and Application, https://secure.sos.state.or.us/oard/view.action?ruleNumber=340-226-0100.