06-096 C.M.R. ch. 110, § 4 - Carbon Monoxide Ambient Air Quality Standards
The ambient air quality standards for carbon monoxide are:
A.
9 ppm (10 milligrams per
cubic meter) for an 8-hour average concentration.The 8-hour average is
met when the second-highest 8-hour average concentration per calendar year, as
determined in accordance with 40 CFR Part 50 Appendix C, is less than or equal
to 9 ppm; and
B.
35 ppm (40
milligrams per cubic meter) for an 1-hour average.The 1-hour average is
met when the second-highest 1-hour average concentration per calendar year, as
determined in accordance with 40 CFR Part 50 Appendix C, is less than or equal
to 35 ppm.
Notes
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