Area Designations for 2008 Ground-level Ozone Standards
Nonattainment Designations for the 2008 Ozone Standards - Counties by State, April 30, 2012 and May 31, 2012
| State | Area Name | Area Classification | 2012 EPA Designated Nonattainment Counties |
|---|---|---|---|
| AR | Memphis, TN-MS-AR | Marginal | Crittenden |
| AZ | Phoenix-Mesa, AZ | Marginal | Maricopa (p) |
| Pinal (p) | |||
| CA | Calaveras County, CA | Marginal | Calaveras |
| Chico (Butte County), CA | Marginal | Butte | |
| Imperial County, CA | Marginal | Imperial | |
| Kern County (Eastern Kern), CA | Marginal | Kern (p) | |
| Los Angeles-San Bernardino Counties (West Mojave Desert), CA | Severe-15 | Los Angeles (p) | |
| San Bernardino (p) | |||
| Los Angeles-South Coast Air Basin, CA | Extreme | Los Angeles (p) | |
| Orange | |||
| Riverside (p) | |||
| San Bernardino (p) | |||
| Mariposa County, CA | Marginal | Mariposa | |
| Nevada County (Western part), CA | Marginal | Nevada (p) | |
| Riverside County (Coachella Valley), CA | Severe-15 | Riverside (p) | |
| Sacramento Metro, CA | Severe-15 | El Dorado (p) | |
| Placer (p) | |||
| Sacramento | |||
| Solano (p) | |||
| Sutter (p) | |||
| Yolo | |||
| San Diego County, CA | Marginal | San Diego | |
| San Francisco Bay Area, CA | Marginal | Alameda | |
| Contra Costa | |||
| Marin | |||
| Napa | |||
| San Francisco | |||
| San Mateo | |||
| Santa Clara | |||
| Solano (p) | |||
| Sonoma (p) | |||
| San Joaquin Valley, CA | Extreme | Fresno | |
| Kern (p) | |||
| Kings | |||
| Madera | |||
| Merced | |||
| San Joaquin | |||
| Stanislaus | |||
| Tulare | |||
| San Luis Obispo (Eastern San Luis Obispo), CA | Marginal | San Luis Obispo (p) | |
| Tuscan Buttes, CA | Marginal | Tehama (p) | |
| Ventura County, CA | Serious | Ventura (p) | |
| Morongo Areas of Indian Country (Morongo Band of Mission Indians) | Serious | Areas of Indian Country | |
| Pechanga Areas of Indian Country (Pechanga Band of Luiseno Mission Indians of the Pechanga Reservation) | Moderate | Areas of Indian Country | |
| CO | Denver-Boulder-Greeley-Ft Collins-Loveland, CO | Marginal | Adams |
| Arapahoe | |||
| Boulder | |||
| Broomfield | |||
| Denver | |||
| Douglas | |||
| Jefferson | |||
| Larimer (p) | |||
| Weld (p) | |||
| CT | Greater Connecticut, CT | Marginal | Hartford |
| Litchfield | |||
| New London | |||
| Tolland | |||
| Windham | |||
| New York-N. New Jersey-Long Island, NY-NJ-CT | Marginal | Fairfield | |
| Middlesex | |||
| New Haven | |||
| DC | Washington, DC-MD-VA | Marginal | District of Columbia |
| DE | Philadelphia-Wilmington-Atlantic City, PA-NJ-MD-DE | Marginal | New Castle |
| Seaford, DE | Marginal | Sussex | |
| GA | Atlanta, GA | Marginal | Bartow |
| Cherokee | |||
| Clayton | |||
| Cobb | |||
| Coweta | |||
| DeKalb | |||
| Douglas | |||
| Fayette | |||
| Forsyth | |||
| Fulton | |||
| Gwinnett | |||
| Henry | |||
| Newton | |||
| Paulding | |||
| Rockdale | |||
| IL | Chicago-Naperville, IL-IN-WI* | Marginal | Cook |
| DuPage | |||
| Grundy (p) | |||
| Kane | |||
| Kendall (p) | |||
| Lake | |||
| McHenry | |||
| Will | |||
| St. Louis-St. Charles-Farmington, MO-IL | Marginal | Madison | |
| Monroe | |||
| St. Clair | |||
| IN | Chicago-Naperville, IL-IN-WI* | Marginal |
Lake |
| Porter | |||
| Cincinnati, OH-KY-IN | Marginal | Dearborn (p) | |
| KY | Cincinnati, OH-KY-IN | Marginal | Boone (p) |
| Campbell (p) | |||
| Kenton (p) | |||
| LA | Baton Rouge, LA | Marginal | Ascension |
| East Baton Rouge | |||
| Iberville | |||
| Livingston | |||
| West Baton Rouge | |||
| MA | Dukes County, MA | Marginal | Dukes |
| MD | Baltimore, MD | Moderate | Anne Arundel |
| Baltimore | |||
| Baltimore City | |||
| Carroll | |||
| Harford | |||
| Howard | |||
| Philadelphia-Wilmington-Atlantic City, PA-NJ-MD-DE | Marginal | Cecil | |
| Washington, DC-MD-VA | Marginal | Calvert | |
| Charles | |||
| Frederick | |||
| Montgomery | |||
| Prince George's | |||
| MO | St. Louis-St. Charles-Farmington, MO-IL | Marginal | Franklin |
| Jefferson | |||
| St. Charles | |||
| St. Louis | |||
| St. Louis City | |||
| MS | Memphis, TN-MS-AR | Marginal | DeSoto (p) |
| NC | Charlotte-Rock Hill, NC-SC | Marginal | Cabarrus (p) |
| Gaston (p) | |||
| Iredell (p) | |||
| Lincoln (p) | |||
| Mecklenburg | |||
| Rowan (p) | |||
| Union (p) | |||
| NJ | New York-N. New Jersey-Long Island, NY-NJ-CT | Marginal | Bergen |
| Essex | |||
| Hudson | |||
| Hunterdon | |||
| Middlesex | |||
| Monmouth | |||
| Morris | |||
| Passaic | |||
| Somerset | |||
| Sussex | |||
| Union | |||
| Warren | |||
| Philadelphia-Wilmington-Atlantic City, PA-NJ-MD-DE | Marginal | Atlantic | |
| Burlington | |||
| Camden | |||
| Cape May | |||
| Cumberland | |||
| Gloucester | |||
| Mercer | |||
| Ocean | |||
| Salem | |||
| NY | Jamestown, NY | Marginal | Chautauqua |
| New York-N. New Jersey-Long Island, NY-NJ-CT | Marginal | Bronx | |
| Kings | |||
| Nassau | |||
| New York | |||
| Queens | |||
| Richmond | |||
| Rockland | |||
| Suffolk | |||
| Westchester | |||
| OH | Cincinnati, OH-KY-IN | Marginal | Butler |
| Clermont | |||
| Clinton | |||
| Hamilton | |||
| Warren | |||
| Cleveland-Akron-Lorain, OH | Marginal | Ashtabula | |
| Cuyahoga | |||
| Geauga | |||
| Lake | |||
| Lorain | |||
| Medina | |||
| Portage | |||
| Summit | |||
| Columbus, OH | Marginal | Delaware | |
| Fairfield | |||
| Franklin | |||
| Knox | |||
| Licking | |||
| Madison | |||
| PA | Allentown-Bethlehem-Easton, PA | Marginal | Carbon |
| Lehigh | |||
| Northampton | |||
| Lancaster, PA | Marginal | Lancaster | |
| Philadelphia-Wilmington-Atlantic City, PA-NJ-MD-DE | Marginal | Bucks | |
| Chester | |||
| Delaware | |||
| Montgomery | |||
| Philadelphia | |||
| Pittsburgh-Beaver Valley, PA | Marginal | Allegheny | |
| Armstrong | |||
| Beaver | |||
| Butler | |||
| Fayette | |||
| Washington | |||
| Westmoreland | |||
| Reading, PA | Marginal | Berks | |
| SC | Charlotte-Rock Hill, NC-SC | Marginal | York (p) |
| TN | Knoxville, TN | Marginal | Blount |
| Anderson (p) | |||
| Knox | |||
| Memphis, TN-MS-AR | Marginal | Shelby | |
| TX | Dallas-Fort Worth, TX | Moderate | Collin |
| Dallas | |||
| Denton | |||
| Ellis | |||
| Johnson | |||
| Kaufman | |||
| Parker | |||
| Rockwall | |||
| Tarrant | |||
| Wise | |||
| Houston-Galveston-Brazoria, TX | Marginal | Brazoria | |
| Chambers | |||
| Fort Bend | |||
| Galveston | |||
| Harris | |||
| Liberty | |||
| Montgomery | |||
| Waller | |||
| VA | Washington, DC-MD-VA | Marginal | Alexandria City |
| Arlington | |||
| Fairfax | |||
| Fairfax City | |||
| Falls Church City | |||
| Loudoun | |||
| Manassas City | |||
| Manassas Park City | |||
| Prince William | |||
| WI | Chicago-Naperville, IL-IN-WI* | Marginal | Kenosha (p) |
| Sheboygan County, WI | Marginal | Sheboygan | |
| WY | Upper Green River Basin Area, WY | Marginal | Lincoln (p) |
| Sublette | |||
| Sweetwater (p) | |||
| Total | |||
| 26 states, 2 areas of Indian country, District of Columbia |
46 Areas | Marginal - 36 areas Moderate - 3 areas Serious - 2 areas Severe 15 - 3 areas Extreme - 2 areas |
192 whole nonattainment counties 40 partial nonattainment counties |
*EPA completed area designations for the Chicago-Naperville, IL-IN-WI area on May 31, 2012. All other area designations were completed on April 30, 2012.