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Areas With a Maintenance Plan Requirement Under Section 110(A)(1) of the CAA
Areas with a Maintenance Plan Requirement Under
Section 110(a)(1) of the CAA
Data is current as of June 15, 2005
| Areas Listed Alphabetically | Classification | No. Counties NAA |
2010 Population |
EPA Region |
State(s) | ||
|---|---|---|---|---|---|---|---|
| Boston-Lawrence-Worcester (E. MA), MA-NH | Serious | 1 | 5,777 | 1 | MA-NH | ||
| Cherokee Co, SC | Marginal | 1 | 52,537 | 4 | SC | ||
| East Kern Co, CA | Serious | 1 | 12,174 | 9 | CA | ||
| Edmonson Co, KY | Marginal RT | 1 | 11,644 | 4 | KY | ||
| El Paso, TX | Serious | 1 | 679,622 | 6 | TX | ||
| Greenbrier Co, WV | Marginal | 1 | 34,453 | 4 | WV | ||
| Greensboro-Winston Salem-High Point, NC | Moderate | 4 | 874,362 | 4 | NC | ||
| Hancock & Waldo Cos, ME | Marginal | 2 | 57,662 | 1 | ME | ||
| Huntington-Ashland, WV-KY | Moderate* | 1 | 17,125 | 4 | WV-KY | ||
| Johnstown, PA | Marginal | 1 | 80,023 | 3 | PA | ||
| Kansas City, MO-KS | Other | 5 | 1,521,635 | 7 | MO-KS | ||
| Knox & Lincoln Co.s, ME | Moderate* | 2 | 11,167 | 1 | ME | ||
| Lake Charles, LA | Marginal | 1 | 183,577 | 7 | LA | ||
| Lewiston-Auburn, ME | Moderate* | 1 | 217,517 | 1 | ME | ||
| Lexington-Fayette, KY | Marginal | 2 | 293,573 | 4 | KY | ||
| Manchester, NH | Marginal | 3 | 179,952 | 1 | NH | ||
| Miami-Fort Lauderdale-W. Palm Beach, FL | Moderate | 3 | 5,007,564 | 4 | FL | ||
| Monterey Bay, CA | Moderate | 3 | 710,598 | 9 | CA | ||
| Nashville, TN | Moderate | 5 | 1,097,810 | 4 | TN | ||
| Owensboro, KY | Marginal | 2 | 92,389 | 4 | KY | ||
| Paducah, KY | Marginal | 1 | 31,404 | 4 | KY | ||
| Pointe Coupee Parish, LA | Marginal | 1 | 22,763 | 6 | LA | ||
| Portland, ME | Moderate | 2 | 34,450 | 1 | ME | ||
| Portland-Vancouver AQMA, OR-WA | Marginal | 4 | 1,437,910 | 10 | OR-WA | ||
| Portsmouth-Dover-Rochester, NH | Serious | 1 | 30,099 | 1 | NH | ||
| Reno, NV | Marginal | 1 | 339,486 | 9 | NV | ||
| Salt Lake City, UT | Moderate | 2 | 1,137,381 | 8 | UT | ||
| San Diego, CA | Serious | 1 | 402 | 8 | UT | ||
| Santa Barbara-Santa Maria-Lompoc, CA | Serious | 1 | 399,347 | 8 | UT | ||
| Scranton-Wilkes-Barre, PA | Marginal | 1 | 64,151 | 3 | PA | ||
| Seattle-Tacoma, WA | Marginal | 3 | 3,043,878 | 10 | WA | ||
| Smyth Co, VA (White Top Mtn) | Marginal RT | 1 | 0 | 3 | VA | ||
| Sunland Park, NM (New Area 1995) | Marginal | 1 | 10,306 | 6 | NM | ||
| Tampa-St. Petersburg-Clearwater, FL | Marginal | 2 | 1,920,430 | 4 | FL | ||
| Walworth Co, WI | Marginal | 1 | 93,759 | 5 | WI | ||
| 33 Total Areas | 56 | 17,734,755 | |||||