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

As of December 14, 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.

		1997 8-Hr Ozone Nonattainment Areas				2006 PM-2.5 Nonattainment Areas				1997 PM-2.5 Nonattainment Areas
State(s)	General Area Name (see footnote)	2010 Pop.	No. Ctys	Category/ Class	Design Value (2001-2003)	2010 Pop.	No. Ctys	Category/ Class	24-hr Design Value (2006-2008)	2010 Pop.	No. Ctys	Category/ Class	Annual Design Value (2001-2003)
AZ	General Area Name (see footnote)	Phoenix-Mesa	3,848,627	2	Mar	0.087
CA	Amador and Calaveras Cos (Central Mtn),	83,669	2	Mod	0.091
CA	Chico	220,000	1	Mar	0.089	217,626	1	NonAtt	69
CA	Imperial County	174,528	1	Mod	0.087	154,061	1	NonAtt	36
CA	Kern Co (Eastern Kern)	95,314	1	Mod	0.098
CA	Los Angeles-San Bernardino Cos(W Mojave)	868,350	2	Sev5	0.106
CA	Los Angeles-South Coast Air Basin	15,718,827	4	Ext	0.131	15,716,242	4	NonAtt	49	15,716,335	4	NonAtt	27.8
CA	Mariposa and Tuolumne Cos (Southern Mtn)	73,616	2	Mod	0.091
CA	Nevada Co. (Western Part)	82,393	1	Mod	0.098
CA	Riverside Co, (Coachella Valley)	425,425	1	Sev5	0.108
CA	Sacramento Metro	2,243,911	6	Sev5	0.107	2,206,060	5	NonAtt	56
CA	San Diego	3,093,459	1	Mod	0.093
CA	San Francisco-Bay Area	6,970,997	9	Mar	0.086	6,971,067	9	NonAtt	36
CA	San Joaquin Valley	3,842,586	8	Ext	0.115	3,842,165	8	NonAtt	70	3,842,165	8	NonAtt	21.8
CA	Sutter Co (Sutter Buttes)	33	1	Mar	0.088
						164,955	2	NonAtt	47
CA	Ventura County	823,360	1	Ser	0.095
CO	Denver-Boulder-Greeley-Ft Collins-Love.	3,330,139	9	Mar	0.087
CT	Greater Connecticut	1,629,115	5	Mod	0.095
DC-MD-VA	Washington	5,136,216	15	Mod	0.099					5,047,479	14	NonAtt	15.8
GA	Atlanta	5,260,436	20	Mod	0.091					5,265,299	22	NonAtt	18.0
MA	Boston-Lawrence-Worcester (E. Mass)	5,723,468	10	Mod	0.095
MA	Springfield (Western Mass)	824,161	4	Mod	0.094
MD	Baltimore	2,662,691	6	Ser	0.103					2,662,691	6	NonAtt	16.7
MO-IL	St. Louis	2,594,238	9 [Split]	Mod	0.092					2,572,706	9	NonAtt	17.5
NC-SC	Charlotte-Gastonia-Rock Hill	1,968,712	8	Mod	0.100
NH	Boston-Manchester-Portsmouth(SE)	740,556	4	Mod	0.095
NV	Las Vegas	1,918,819	1	Mar	0.086
NY	Albany-Schenectady-Troy	970,156	7	Mar	0.087
NY	Buffalo-Niagara Falls	1,135,509	2	Mod	0.099
NY	Essex County; Whiteface Mountain	465	1	Mar	0.091
NY	Jamestown	134,905	1	Mod	0.094
NY	Jefferson County	116,229	1	Mod	0.097
NY	Poughkeepsie	770,011	3	Mod	0.094
NY	Rochester	1,114,402	6	Mar	0.088
NY-NJ-CT	New York-N. New Jersey-Long Island	20,217,137	24	Mod	0.102	20,404,481	22	NonAtt	38	20,404,481	22	NonAtt	17.7
PA	Pittsburgh-Beaver Valley	2,356,285	7	Mod	0.094	2,142,981	8	NonAtt	36	2,142,981	8	NonAtt	21.2
						20,789	1	NonAtt	53	20,789	1	NonAtt	21.2
PA-NJ-MD-DE	Philadelphia-Wilmin-Atlantic City	7,796,590	18	Mod	0.106	5,798,152	9	NonAtt	36	5,798,152	9	NonAtt	16.4
RI	Providence (all of RI)	1,052,567	5	Mod	0.095
TX	Dallas-Fort Worth	6,221,286	9	Ser	0.100
TX	Houston-Galveston-Brazoria	5,891,999	8	Sev5	0.102
WI	Sheboygan	115,507	1	Mod	0.100

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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