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Maintenance Lead Areas
As of August 30, 2011
| Areas Listed Alphabetically | No. Counties NAA |
2000 Pop. | EPA Region |
State | |
|---|---|---|---|---|---|
| Collin Co, TX | 1 | 491,675 | 6 | TX | |
| Dakota Co, MN | 1 | 284,723 | 5 | MN | |
| Douglas Co, NE | 1 | 1,113 | 7 | NE | |
| Fayette Co, TN | 1 | 28,521 | 4 | TN | |
| Iron County (part); Dent Township, MO | 1 | 1,419 | 7 | MO | |
| Iron County (part); Liberty and Arcadia, MO | 1 | 6,094 | 7 | MO | |
| Jefferson Co, AL | 1 | 662,047 | 4 | AL | |
| Marion Co, IN | 1 | 17,295 | 5 | IN | |
| Muscogee Co, GA | 1 | 186,291 | 4 | GA | |
| Shelby Co, TN | 1 | 2,154 | 4 | TN | |
| Williamson Co, TN | 1 | 126,638 | 4 | TN | |
| 11 Total Areas | 10 | 1,807,970 | |||
|
The county total is adjusted to count a single county only once (in the case where part of a county may be in multiple maintenance areas). Any multi-state areas are counted in the nonattainment report until all state areas have been redesignated. |