8-Hour Ozone Nonattainment Area Summary with History

As of August 30, 2011
Populations are based on 2000 census

	NUMBER OF AREAS				NUMBER OF COUNTIES				POPULATION
	Original	Adjusted			Original	Adjusted			Original	Adjusted
Classification	2004	2004	Today	Redesignated	2004	2004	Today	Redesignated	2004	2004	Today	Redesignated

Extreme	0	2	2	0	0	12	12	0	0	17,784,954	17,784,954	0
Severe 17	1	0	0	0	4	0	0	0	14,593,587	0	0	0
Severe 15	0	3	3	0	0	15	15	0	0	6,972,669	6,972,669	0
Serious	3	2	2	0	15	10	10	0	5,494,465	5,784,025	5,784,025	0
Moderate	30	24	20	4	185	173	157	16	81,010,125	69,235,198	64,753,819	4,481,379
Marginal	7	10	1	9	55	49	9	40	13,932,637	15,253,968	6,541,828	8,712,140

SUBTOTALS:	41	41	28	13	255	311	199	112	115,030,814	128,224,333	101,837,295	26,387,038

Former Subpart 1	71	72	16	56	172	181	45	136	34,432,102	37,243,682	16,351,290	20,892,392

SUBTOTALS:	71	72	16	56	172	181	45	136	34,432,102	37,243,682	16,351,290	20,892,392

Marginal EAC	1	0	0	0	8	0	0	0	1,285,879	0	0	0
Subpart 1 EAC	13	0	0	0	41	0	0	0	8,523,124	0	0	0

SUBTOTALS:	14	0	0	0	49	0	0	0	9,809,003	0	0	0


GRAND TOTALS:	126	113	44	69	474	434	242	192	159,271,919	152,274,496	118,188,585	34,085,911

On June 8, 2007, the United States Court of Appeals vacated the Subpart 1 portion of the Phase 1 Rule (Court Order). The Subpart 1 areas in the Greenbook are listed as "Former Subpart 1" until reclassification of the areas is finalized. Proposed reclassifications were published on January 16, 2009 74 FR 2936

* See attached adjustments to original 2004 nonattainment areas. County subtotals and grand totals may not equal sum of parts. Part counties are only counted one time within groups.
The Greensboro EAC area was reclassified from Moderate EAC to Marginal EAC on November 2004. This table reflects the original area status after the reclassfication to Marginal EAC. Based on air quality data from 2005, 2006 and the first three quarters of 2007, the Denver CO Subpart 1 EAC area was designated nonattainment for 8-hour Ozone, effective November 20, 2007. The remaining thirteen (13) 8-Hr EAC areas were designated attainment on April 15, 2008.