§ 40921.5
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/ca/health-and-safety-code/40921-5A research copy — for the controlling text, always check the official state or federal source. Not legal advice.
(a)For purposes of classifying ozone nonattainment areas pursuant to Sections 40918, 40919, 40920, and 40920.5, the terms moderate, serious, severe, and extreme shall be defined as follows:
(1)Moderate
greater than 0.09 to not
more than 0.12 parts per
million, inclusive.
(2)Serious
0.13 to 0.15 parts per mil-
lion, inclusive.
(3)Severe
0.16 to 0.20 parts per mil-
lion, inclusive.
(4)Extreme
greater than 0.20 parts per
million.
(b)For the purposes of classifying carbon monoxide nonattainment areas under Sections 40918 and 40919, the terms moderate and serious shall be defined as follows:
(1)Moderate
greater than 9.0 to 12.7 parts
per million, inclusive.
(2)Serious
greater than 12.7 parts per
million.
(c)The state board shall determine the ambient concentration of each nonattainment area consistent with the designation criteria established pursuant to subdivision
(e)of Section 39607. Classifications for ozone shall be based upon the calendar years 1989 to 1991, inclusive. Classifications for carbon monoxide shall be based upon the 1989–90 and 1990–91 winter seasons.