OAR 340-206-0010
Introduction
(1)
For sulfur dioxide (SO2) — 1.0 ppm, 24-hour average.(2)
For particulate matter:(a)
PM10 — 600 micrograms per cubic meter, 24-hour average.(b)
PM2.5 — 350.5 micrograms per cubic meter, 24-hour average.(3)
For carbon monoxide (CO):(a)
50 ppm, 8-hour average.(b)
75 ppm, 4-hour average.(c)
125 ppm, 1-hour average.(4)
For ozone (O3) — 0.6 ppm, 2-hour average.(5)
For nitrogen dioxide (NO2):(a)
2.0 ppm, 1-hour average.(b)
0.5 ppm, 24-hour average.
Source:
Rule 340-206-0010 — Introduction, https://secure.sos.state.or.us/oard/view.action?ruleNumber=340-206-0010
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