Green Book Nonattainment Areas
1-Hour Ozone (1979) Nonattainment Area Summary - NAAQS Revoked
As of June 15, 2005
|Classification||Number of Areas||Number of Counties||2000 Population
|Severe (2007) *||6||51||35,420|
* 78 FR 58189, effective 10/23/2013, corrected a boundary for the land of the Morongo Band of Mission Indians, located near Banning Pass in Riverside County, identifying it as a separately designated Severe-17 area for the 1-Hour Ozone standard, independent of the Los Angeles-South Coast Air Basin Area.
County subtotals and grand totals may not equal sum of parts. Part counties are only counted one time within groupings.
"Section 185A" was previously called "Transitional".
The former 1-Hour Ozone designations and classifications as of June 15, 2004, are being retained in subpart C of Part 81 for purposes of the anti backsliding provisions of 40 CFR 51.905. 40 CFR 51.905(c) references subpart C of part 81 for the areas affected by the anti-backsliding regulation.