42 U.S. Code § 7511 - Classifications and attainment dates
TABLE 1 |
||
---|---|---|
Area class |
Design value* |
Primary standard attainment date** |
**The primary standard attainment date is measured from November 15, 1990. |
||
Marginal |
0.121 up to 0.138 |
3 |
Moderate |
0.138 up to 0.160 |
6 |
Serious |
0.160 up to 0.180 |
9 |
Severe |
0.180 up to 0.280 |
15 |
Extreme |
0.280 and above |
20 |
Any area that is designated attainment or unclassifiable for ozone under section 7407(d)(4) of this title, and that is subsequently redesignated to nonattainment for ozone under section 7407(d)(3) of this title, shall, at the time of the redesignation, be classified by operation of law in accordance with table 1 under subsection (a). Upon its classification, the area shall be subject to the same requirements under section 7410 of this title, subpart 1 of this part, and this subpart that would have applied had the area been so classified at the time of the notice under subsection (a)(3), except that any absolute, fixed date applicable in connection with any such requirement is extended by operation of law by a period equal to the length of time between November 15, 1990, and the date the area is classified under this paragraph.
The Administrator shall grant the request of any State to reclassify a nonattainment area in that State in accordance with table 1 of subsection (a) to a higher classification. The Administrator shall publish a notice in the Federal Register of any such request and of action by the Administrator granting the request.
[1] So in original. Probably should be “terms”.
Pub. L. 101–549, title VIII, § 819, Nov. 15, 1990, 104 Stat. 2698, provided that:
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