Nitrogen Dioxide Designations
State Designations
| On January 20, 2012 EPA designated all areas of the country as “unclassifiable/attainment” for the 2010 NO2 NAAQS. The available air quality data show that all monitored areas in the country meet the 2010 NO2 NAAQS for 2008-2010. No state or tribe recommended an area be designated “nonattainment.” State information is presented below. Tribal information is available on the Tribal Recommendations page. |
The following map groups the states by their associated EPA regional
office. Click on a region in the map or list below to view recommendations
submitted to EPA by the states or tribes within that region.
Region 1: Connecticut, Maine, Massachusetts, New Hampshire, Rhode Island, Vermont and
Tribal Nations
Region 2: New Jersey, New York, Puerto Rico, US Virgin Islands and
Tribal Nations
Region 3: Delaware, District of Columbia, Maryland, Pennsylvania, Virginia, and West Virginia
Region 4: Alabama, Florida, Georgia, Kentucky, Mississippi, North Carolina, South Carolina,
Tennessee and Tribal Nations
Region 5: Illinois, Indiana, Michigan, Minnesota, Ohio, Wisconsin and
Tribal Nations
Region 6: Louisiana, Arkansas, Oklahoma, New Mexico, Texas and
Tribal Nations
Region 7: Iowa, Kansas, Missouri, Nebraska, and
Tribal Nations
Region 8: Colorado, Montana, North Dakota, South Dakota, Utah, Wyoming and
Tribal Nations
Region 9: Arizona, California, Hawaii, Nevada, the Pacific Islands, and Tribal Nations
Region 10: Alaska, Idaho, Oregon, Washington and
Tribal Nations