Oregon's air toxics benchmarks help DEQ identify, evaluate and address air
toxics problems. Oregon air toxics benchmarks are based on concentration levels
that would result in a cancer risk of one-in-a-million additional cancers based
on a lifetime of exposure. For non-carcinogens, the benchmarks are levels you
could breathe for a lifetime without any non-cancer health effects.
The ambient benchmark concentrations for 52 air toxics of concern in Oregon are based on consensus
recommendations from the Air Toxics Scientific Advisory
Committee, a panel of experts that provides advice on the state air toxics
program that is scientifically and technically sound, independent and balanced.
The benchmarks are based on concentration levels that protect the health of
our most sensitive individuals. These benchmarks provide consistent health-based
goals, as DEQ develops strategies to reduce air toxics.