Or. Admin. Code § 340-202-0080 - Carbon Monoxide

For comparison to the standard, averaged ambient concentrations of carbon monoxide must be rounded to the nearest integer in parts per million (ppm). Fractional parts of 0.5 or greater must be rounded up. Concentrations of carbon monoxide in ambient air as measured by an approved method, must not exceed:

(1) 9 ppm as an eight-hour average concentration more than once per year at any site.

(2) 35 ppm as a one-hour average concentration more than once per year at any site.

[NOTE:This rule is included in the State of Oregon Clean Air Act Implementation Plan as adopted by the Environmental Quality Commission under OAR 340-200-0040.]

Notes

Or. Admin. Code § 340-202-0080

DEQ 37, f. 2-15-72, ef. 3-1-72; DEQ 8-1988, f. & cert. ef. 5-19-88 (corrected 9-30-88); DEQ 24-1991, f. & cert. ef. 11-13-91; DEQ 4-1993, f. & cert. ef. 3-10-93; DEQ 14-1999, f. & cert. ef. 10-14-99, Renumbered from 340-031-0025; DEQ 6-2001, f. 6-18-01, cert. ef. 7-1-01

Stat. Auth.: ORS 468 & ORS 468A

Stats. Implemented: ORS 468A.025