The requirements for nonattainment NSR for the ozone NAAQS are located in §51.165. For each nonattainment area, the state shall submit a nonattainment NSR plan or plan revision for the 2008 ozone NAAQS no later than 36 months after the effective date of the area's designation for the 2008 ozone NAAQS.

[80 FR 12314, Mar. 6, 2015]


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