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8-Hr Ozone (1997) Nonattainment Areas (NAAQS Revoked)

As of April 06, 2015
View Notes
The 1997 Ozone NAAQS was revoked effective April 6, 2015 (80 FR 12264).
Current and historical design value data can be found at http://www.epa.gov/airtrends/values.html
Areas Listed Alphabetically Design Values
(2001-2003)
(ppm)
Classification No.
Counties
NAA
2010
Population
EPA
Region
State
8-Hr 1-Hr
Albany-Schenectady-Troy, NY 0.087 0.115   Marginal 7 970,156    2 NY
Amador and Calaveras Cos. (Central Mountain Cos.), CA 0.091 0.117   Moderate 2 83,669    9 CA
Baltimore, MD 0.103 0.143   Serious 6 2,662,691    3 MD
Boston-Lawrence-Worcester (E. Mass), MA 0.095 0.124   Moderate 10 5,723,468    1 MA
Buffalo-Niagara Falls, NY 0.099 0.116   Moderate 2 1,135,509    2 NY
Chico, CA 0.089 0.102   Marginal 1 220,000    9 CA
Dallas-Fort Worth, TX 0.100 0.135   Serious 9 6,221,286    6 TX
Denver-Boulder-Greeley-Ft. Collins-Loveland, CO 0.087 0.114   Marginal 9 3,330,139    8 CO
Essex Co (Whiteface Mtn), NY 0.091 0.113   Marginal 1 465    2 NY
Greater Connecticut, CT 0.095 0.139   Moderate 5 1,629,115    1 CT
Houston-Galveston-Brazoria, TX 0.102 0.175   Severe 15 8 5,891,999    6 TX
Imperial Co, CA 0.087 0.142   Moderate 1 174,528    9 CA
Jamestown, NY 0.094 0.115   Moderate 1 134,905    2 NY
Jefferson Co, NY 0.097 0.121   Moderate 1 116,229    2 NY
Kern Co (Eastern Kern), CA 0.098 0.118   Moderate 1 95,314    9 CA
Los Angeles-San Bernardino Cos. (W Mojave Desert), CA 0.106 0.138   Severe 15 2 868,350    9 CA
Los Angeles-South Coast Air Basin, CA 0.131 0.180   Extreme 4 15,717,914    9 CA
Mariposa and Tuolumne Cos (Southern Mtn), CA 0.091 0.113   Moderate 2 73,616    9 CA
Morongo Band of Mission Indians 0.000   Severe 17 1 913    9 CA
Nevada Co. (Western part), CA 0.098 0.116   Moderate 1 82,393    9 CA
New York-N. New Jersey-Long Island, NY-NJ-CT 0.102 0.146   Moderate 24 20,217,137    2-2-1 NY-NJ-CT
Philadelphia-Wilmington-Atlantic City, PA-NJ-MD-DE 0.106 0.145   Moderate 18 7,796,590    3-2-3-3 PA-NJ-MD-DE
Pittsburgh-Beaver Valley, PA 0.094 0.120   Moderate 7 2,356,285    3 PA
Poughkeepsie, NY 0.094 0.126   Moderate 3 770,011    2 NY
Providence (all of RI), RI 0.095 0.130   Moderate 5 1,052,567    1 RI
Riverside Co. (Coachella Valley), CA 0.108 0.133   Severe 15 1 425,425    9 CA
Rochester, NY 0.088 0.110   Marginal 6 1,114,402    2 NY
Sacramento Metro, CA 0.107 0.143   Severe 15 6 2,243,911    9 CA
San Francisco Bay Area, CA 0.086 0.123   Marginal 9 6,970,997    9 CA
San Joaquin Valley, CA 0.115 0.151   Extreme 8 3,842,586    9 CA
Sheboygan, WI 0.100 0.124   Moderate 1 115,507    5 WI
Springfield (W. Mass), MA 0.094 0.132   Moderate 4 824,161    1 MA
Sutter Co (Sutter Buttes), CA 0.088 0.113   Marginal 1 33    9 CA
Ventura Co, CA 0.095 0.124   Serious 1 823,360    9 CA
Washington, DC-MD-VA 0.099 0.140   Moderate 15 5,136,216    3-3-3 DC-MD-VA
 
35 Total Areas 177 98,821,847     

No. of Counties reflects the number of counties in an area, while the total count only counts a county once and doesn't double count the county if it is in more than area.

Multi-state areas are counted in the nonattainment report until all state areas have been redesignated.

The design value for Boston-Lawrence-Worcester (E. MA), MA was used for the classification of Boston-Manchester-Portsmouth (SE), NH. The design value for Washington, DC-MD-VA was used for the classification of Fredericksburg, VA.

8-Hr Ozone classified area designations for the 1997 standard were effective on June 15, 2004.

Thirteen (13) 8-Hr EAC areas were designated attainment on April 15, 2008.

On June 8, 2007, the United States Court of Appeals vacated the Subpart 1 portion of the Phase 1 Rule (Court Order) (PDF). On May 14, 2012, the Former Subpart 1 nonattainment areas were classified under Subpart 2 (77 FR 28424 ) (PDF), effective June 13, 2012.

On June 8, 2007, the United States Court of Appeals vacated the Subpart 1 portion of the Phase 1 Rule (Court Order) (PDF). On May 14, 2012, the Former Subpart 1 nonattainment areas were classified under Subpart 2 (77 FR 28424 ) (PDF), effective June 13, 2012.


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