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Maintenance Particulate Matter (PM-10) Areas
As of December 14, 2012Current and historical design value data can be found at http://www.epa.gov/airtrends/values.html
| Areas Listed Alphabetically | Classification | No. Counties NAA |
2010 Population |
EPA Region |
State |
|---|---|---|---|---|---|
| Aspen, CO | Moderate | 1 | 6,772 | 8 | CO |
| Boise-Northern Ada County, ID | Moderate | 1 | 240,254 | 10 | ID |
| Canon City, CO | Moderate | 1 | 18,860 | 8 | CO |
| Clairton & 4 Boroughs, PA | Moderate | 1 | 18,700 | 3 | PA |
| Coso Junction, CA | Moderate | 1 | 7,333 | 9 | CA |
| Cuyahoga Co, OH | Moderate | 1 | 1,280,122 | 5 | OH |
| Denver Metro, CO | Moderate | 7 | 2,770,524 | 8 | CO |
| East Chicago, IN | Moderate | 1 | 214,867 | 5 | IN |
| Follansbee, WV | Moderate | 1 | 2,674 | 3 | WV |
| Granite City, Nameoki Twsp, IL | Moderate | 1 | 35,652 | 5 | IL |
| Grants Pass, OR | Moderate | 1 | 22,449 | 10 | OR |
| Indian Wells, CA | Moderate | 1 | 15,449 | 9 | CA |
| Jefferson Co, OH | Moderate | 1 | 3,472 | 5 | OH |
| Kent, WA | Moderate | 1 | 47,315 | 10 | WA |
| King Co, WA | Moderate | 1 | 661,062 | 10 | WA |
| Klamath Falls, OR | Moderate | 1 | 20,703 | 10 | OR |
| LaGrande, OR | Moderate | 1 | 13,094 | 10 | OR |
| Lake Co, OR | Moderate | 1 | 3,296 | 10 | OR |
| Lamar, CO | Moderate | 1 | 7,523 | 8 | CO |
| Lyons Twsp., IL | Moderate | 1 | 111,688 | 5 | IL |
| Medford-Ashland, OR | Moderate | 1 | 87,458 | 10 | OR |
| Mohave Co, AZ | Moderate | 1 | 10,710 | 9 | AZ |
| Mun. of Guaynabo, PR | Moderate | 1 | 90,470 | 2 | PR |
| New Haven Co, CT | Moderate | 1 | 129,779 | 1 | CT |
| Oglesby, IL | Moderate | 1 | 3,862 | 5 | IL |
| Olmsted Co, MN | Moderate | 1 | 96,199 | 5 | MN |
| Olympia, Tumwater, Lacey, WA | Moderate | 1 | 98,562 | 10 | WA |
| Pagosa Springs, CO | Moderate | 1 | 2,261 | 8 | CO |
| Payson, AZ | Moderate | 1 | 5,333 | 9 | AZ |
| Pierce Co, WA | Moderate | 1 | 238,725 | 10 | WA |
| Portneuf Valley, ID | Moderate | 2 | 72,396 | 10 | ID |
| Presque Isle, ME | Moderate | 1 | 972 | 1 | ME |
| Ramsey Co, MN | Moderate | 1 | 284,783 | 5 | MN |
| San Joaquin Valley Air Basin, CA | Serious | 8 | 3,830,257 | 9 | CA |
| Southeast Chicago, IL | Moderate | 1 | 3,117 | 5 | IL |
| Spokane Co, WA | Moderate | 1 | 230,807 | 10 | WA |
| Steamboat Springs, CO | Moderate | 1 | 12,088 | 8 | CO |
| Telluride, CO | Moderate | 1 | 2,014 | 8 | CO |
| Vermillion Co, IN | Moderate | 1 | 9,119 | 5 | IN |
| Wallula, WA | Serious | 1 | 426 | 10 | WA |
| Wayne Co, MI | Moderate | 1 | 713,777 | 5 | MI |
| Weirton, WV | Moderate | 2 | 14,199 | 3 | WV |
| Yakima Co, WA | Moderate | 1 | 69,565 | 10 | WA |
| 43 Total Areas | 54 | 11,508,688 | |||
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.
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