You are here: EPA Home > Green Book > >National Area and County-Level Multi-Pollutant Information >Arkansas Whole or Part County Nonattainment Status by Year Since 1992 for all Criteria Pollutants
Arkansas Whole or Part County Nonattainment Status by Year Since 1992 for all Criteria PollutantsData is current as of September 30, 2017
Listed by State, County, NAAQS (W=Whole County,P=Partial County designated nonattainment as of report date)
The 8-hour Ozone (1997) standard was revoked on April 6, 2015 and the 1-hour Ozone (1979) standard was revoked on June 15, 2005.
The 1997 Primary Annual PM-2.5 NAAQS (level of 15 µg/m3) is revoked in attainment and maintenance areas for that NAAQS. For additional information see the PM-2.5 NAAQS SIP Requirements Final Rule, effective October 24, 2016. (81 FR 58009) Important Notes
|Crittenden Co||8-Hour Ozone (1997)-NAAQS revoked||W||W||W||W||W||W|
|Crittenden Co||8-Hour Ozone (2008)||W||W||W||W|