8-Hour Ozone (2015) Maintenance Area (Redesignated from Nonattainment) Summary

Data is current as of September 30, 2021

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Classification	Number of Areas	Number of Counties	2010 Population
Extreme	0	0	0
Severe 15	0	0	0
Serious	0	0	0
Moderate	0	0	0
Marginal	1	4	1,650,276
Marginal (Rural Transport)	1	0	31
SUBTOTAL	2	4	1,650,307
GRAND TOTAL	2	4	1,650,307

County subtotals and grand totals may not equal sum of parts. Part counties are only counted one time across groupings. Multi-state nonattainment areas are not considered maintenance areas until all states in the area have been redesignated.