Designated 2006 PM-2.5 Nonattainment Areas Compared to 1997 PM-2.5 and 1997 8-Hr Ozone Nonattainment Areas

As of March 30, 2012

Mouse over the No. Ctys to see the area name; click on them to see the associated counties. [Split] in No. Ctys column explained here.

		2006 PM-2.5 Nonattainment Areas				1997 PM-2.5 Nonattainment Areas				1997 8-Hr Ozone Nonattainment Areas
State(s)	General Area Name (see note)	2010 Pop.	No. Ctys	Category/ Class	24-hr Design Value (2006-2008)	2010 Pop.	No. Ctys	Category/ Class	Annual Design Value (2001-2003)	2010 Pop.	No. Ctys	Category/ Class	Design Value (2001-2003)
AK	General Area Name (see note)	Fairbanks	87,456	1	NonAtt	41
AL	Birmingham	857,680	3	NonAtt	39	857,680	3	NonAtt	18.0
AZ	Nogales	30,622	1	NonAtt	40
AZ	West Central Pinal	52,314	1	NonAtt	48
CA	Chico	217,626	1	NonAtt	69					220,000	1	Subpar	0.089
CA	Imperial County	154,061	1	NonAtt	36					174,528	1	Mod	0.087
CA	Los Angeles-South Coast Air Basin	15,716,242	4	NonAtt	49	15,716,335	4	NonAtt	27.8	15,718,827	4	Ext	0.131
CA	Sacramento	2,206,060	5	NonAtt	56					2,243,911	6	Sev5	0.107
CA	San Francisco-Bay Area	6,971,067	9	NonAtt	36					6,970,997	9	Mar	0.086
CA	San Joaquin Valley	3,842,165	8	NonAtt	70	3,842,165	8	NonAtt	21.8	3,842,586	8	Ext	0.115
CA	Yuba CIty-Marysville	164,955	2	NonAtt	47					33	1	Subpar	0.088
MI	Detroit-Ann Arbor	4,704,743	7	NonAtt	37	4,704,743	7	NonAtt	19.5
NY-NJ-CT	New York	20,404,481	22	NonAtt	38	20,404,481	22	NonAtt	17.7	20,217,137	24	Mod	0.102
OH	Canton-Massillon	375,586	1	NonAtt	see Design Value Notes	375,586	1	NonAtt	17.3
OH	Cleveland-Akron-Lorain	2,687,051	6	NonAtt	38	2,709,565	7	NonAtt	18.3
OH-WV	Steubenville-Weirton	124,454	3	NonAtt	41	124,454	3	NonAtt	17.8
OR	Klamath Falls	46,969	1	NonAtt	46
OR	Oakridge	4,261	1	NonAtt	40
PA	Allentown	647,232	2	NonAtt	36
PA	Harrisburg-Lebanon-Carlisle	1,072,046	4	NonAtt	36	637,074	3	NonAtt	15.8
PA	Johnstown	156,923	2	NonAtt	see Design Value Notes	156,923	2	NonAtt	15.8
PA	Lancaster	519,445	1	NonAtt	37	519,445	1	NonAtt	17.0
PA	Pittsburgh-Beaver Valley	20,789	1	NonAtt	53	20,789	1	NonAtt	21.2
		2,142,981	8	NonAtt	36	2,142,981	8	NonAtt	21.2	2,356,285	7	Subpar	0.094
PA-NJ-DE	Philadelphia-Wilmington									7,796,590	18	Mod	0.106
		5,798,152	9	NonAtt	36	5,798,152	9	NonAtt	16.4
TN	Knoxville	681,523	5	NonAtt	see Design Value Notes	681,523	5	NonAtt	16.8
UT	Provo	517,537	1	NonAtt	44
UT	Salt Lake City	1,665,137	5	NonAtt	48
UT-ID	Logan	125,198	2	NonAtt	36
WA	Seattle-Tacoma	539,682	1	NonAtt	44
WI	Milwaukee-Racine	1,533,034	3	NonAtt	37					1,917,742	6	Mod	0.101
WV	Charleston	248,549	2	NonAtt	36	248,549	2	NonAtt	17.1

Area Name:

The "State(s) Area Name" column contains a common or general name for the nonattainment areas on the row, but may not reflect the exact name of any area on the row. This column cannot be exact since the nonattainment area for one pollutant may not contain the same counties, cities, or states as the nonattainment area for another pollutant on the same row. to see the area name or click on them to see the associated counties. The abbreviations listed in the "State(s)" column reflect all states identified in row. However, some states on a row may be nonattainment for some pollutants and not for others in the general area.

Split Area:

'Split' in the No. Ctys column indicates that the multi-state area has states that have been redesignated but the area does not become a maintenance area until all states in the area are redesignated. The whole area population is displayed in this report. Clicking on a "Split" No. Ctys will display information for the state(s) that have not been redesignated.

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