12/17/19 Update: The Environmental Protection Agency (EPA) takes final action in determining that seven ozone nonattainment areas that are classified as ‘‘Moderate’’ for the 2008 ozone national ambient air quality standards (NAAQS) failed to attain the standards by the attainment date. The effective date of this ruling is September 23, 2019.
2008 OZONE MODERATE NONATTAINMENT AREA FINAL ACTION SUMMARY
2008 NAAQS nonattainment area Attained by the Failed to attain by Extension of the moderate area
attainment date the attainment date attainment date to July 20, 2019
Baltimore, MD ..................................................................... X ..................................................................................................................................
Chicago-Naperville, IL-IN-WI .................................................................................. X ..........................................................................................
Dallas-Fort Worth, TX ............................................................................................... X ..........................................................................................
Greater Connecticut, CT ............................................................................................ X ..........................................................................................
Houston-Galveston-Brazoria, TX ...........................................................................X ...........................................................................................
Mariposa County, CA ......................................................... X ....................................................................................................................................
Nevada County (Western part), CA .........................................................................X ...........................................................................................
New York-N. New Jersey-Long Island, CT-NJ-NY ...............................................X ...........................................................................................
San Diego County, CA ............................................................................................... . X ..........................................................................................
Inland Sheboygan County, WI ................................................................................... .............................. ............................... X...........................
Shoreline Sheboygan County, WI .............................................................................. .............................. .............................. X...........................
On December 16, 2019, the EPA also took final action by reclassifying the Denver Metro/North Front Range ozone nonattainment area from Moderate to Serious nonattainment.
These EPA final actions set a new deadline of July 20, 2021, for the areas to attain the 2008 ozone standard.
The Environmental Protection Agency (EPA) Proposes Reclassifying Seven Areas in 2019 to “Serious” for the Ozone National Ambient Air Quality Standards (NAAQS).