Oregon Administrative Rules
Chapter 340 - DEPARTMENT OF ENVIRONMENTAL QUALITY
Division 245 - CLEANER AIR OREGON
Section 340-245-0310 - Process for Updating Risk-Based Concentrations for Toxic Air Contaminants

Universal Citation: OR Admin Rules 340-245-0310

Current through Register Vol. 63, No. 3, March 1, 2024

(1) Purpose. As risk assessment and toxicological sciences advance, it is important that health risk-based standards for air quality continue to reflect the latest practices and science. The list of toxic air contaminants that are regulated and their RBCs represent one area where regulations will need regular updating to accommodate advancing science and practices to ensure that impacts to public health from industrial air emissions are minimized.

(2) Process for updating risk-based concentrations.

(a) DEQ will propose, through a public rulemaking process, to revise, add, or remove risk-based concentrations for toxic air contaminants whenever changes are proposed to their toxicity reference values in OAR 340-247-8010 Table 2.

(b) As needed, DEQ will propose, through a public rulemaking process, to revise risk-based concentrations if new information indicates the need to adjust exposure factors or other adjustment factors for individual toxic air contaminants or groups of toxic air contaminants.

Statutory/Other Authority: ORS 468.020, 468.065, 468A.025, 468A.040, 468A.050, 468A.070, 468A.155, 468A.135 & 468A.337

Statutes/Other Implemented: 468.065, 468A.025, 468A.040, 468A.050, 468A.070, 468A.155, 468A.010, 468A.015, 468A.035, 468A.337 & 468A.335

Disclaimer: These regulations may not be the most recent version. Oregon may have more current or accurate information. We make no warranties or guarantees about the accuracy, completeness, or adequacy of the information contained on this site or the information linked to on the state site. Please check official sources.
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