§ 103-6-4. Carbon monoxide.

(a)

Primary and secondary ambient air quality standards are:

(1)

Ten (10) milligrams per cubic meter (9 ppm)—maximum eight-hour concentration not to be exceeded more than once per year.

(2)

Forty (40) milligrams per cubic meter (35 ppm)—maximum one-hour concentration not to be exceeded more than once per year.

(b)

Carbon monoxide shall be measured by the reference method described in Appendix C of 40 CFR Part 50, or other method designated as such, or by an equivalent method.

(27-78-103.)

(27-78-103.)