Green Book
You are here: EPA Home
>
Green Book
>
8-Hour Ozone (2015) Maintenance Area (Redesignated from Nonattainment) Summary
8-Hour Ozone (2015) Maintenance Area (Redesignated from Nonattainment) Summary
Data is current as of September 30, 2020| Classification | Number of Areas | Number of Counties | 2010 Population |
|---|---|---|---|
| Marginal | 1 | 4 | 1,650,276 |
| Marginal (Rural Transport) | 1 | 1 | 31 |
| SUBTOTAL | 2 | 5 | 1,650,307 |
| GRAND TOTAL | 2 | 5 | 1,650,307 |
County subtotals and grand totals may not equal sum of parts. Part counties are only counted one time within groupings. Multi-state nonattainment areas are not considered maintenance areas until all states in the area have been redesignated.