§51.1002. Classifications and reclassifications.
40 C.F.R. § 51.1002
Initial classification as Moderate PM— 2.5 nonattainment area. Any area designated nonattainment for a PM2.5 NAAQS shall be classified at the time of such designation, by operation of law, as a Moderate PM2.5 nonattainment area.
Reclassification as Serious PM— 2.5 nonattainment area. A Moderate nonattainment area shall be reclassified to Serious under the following circumstances:
The EPA shall reclassify as Serious through notice-and-comment rulemaking any Moderate PM2.5 nonattainment area that the EPA determines cannot practicably attain a particular PM2.5 NAAQS by the applicable Moderate area attainment date.
A Moderate PM2.5 nonattainment area shall be reclassified by operation of law as a Serious nonattainment area if the EPA finds through notice-and-comment rulemaking that the area failed to attain a particular PM2.5 NAAQS by the applicable Moderate area attainment date.
Notes, amendments, and revision history
Source
Source: 81 FR 58151, Aug. 24, 2016, unless otherwise noted.
Authority
Authority: 23 U.S.C. 101; 42 U.S.C. 7401-7671q.
Source
Source: 36 FR 22398, Nov. 25, 1971, unless otherwise noted.