The Green Book Nonattainment Areas
for Criteria Pollutants
Questions concerning the status of nonattainment areas, their
classification and EPA policy should be directed to the appropriate
Regional Office.
EPA Headquarters
should be contacted only when the Regional Office is unable to answer
a question.
Areas of the country where air pollution levels persistently exceed the national ambient air quality standards may be designated "nonattainment." To view a list of areas designated nonattainment, select one of the pollutants below:
- 1-Hour Ozone
- 8-Hour Ozone
- Carbon Monoxide
- Nitrogen Dioxide
- Sulfur Dioxide
- Particulate Matter PM-10
- Particulate Matter PM-2.5
- Lead
- All Criteria Pollutants
Federal Register Notices published or due to become effective after this Green Book was posted.
List of new Federal Register Notices included this version of the Green Book since last publication.
Other Related Information: