Jump to main content.


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

As of July 02, 2014

View Notes     |     Design Value Notes

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 PM-2.5
Nonattainment Areas
2006 PM-2.5
Nonattainment Areas
1997 8-Hr Ozone
Nonattainment Areas
State(s) General Area Name
(see footnote)
2010
Pop.
No.
Ctys
Category/
Class
Annual
Design
Value
(2001-2003)
2010
Pop.
No.
Ctys
Category/
Class
24-hr
Design
Value
(2006-2008)
2010
Pop.
No.
Ctys
Category/
Class
Design
Value
(2001-2003)
AL-TN-GA Chattanooga 470,921 4 Mod 16.1                
CA Los Angeles-South Coast Air Basin         15,716,242 4 Mod 49 15,717,914 4 Ext 0.131
   15,716,335 4 Mod 27.8         913 1 Sev7 see Design
Value Notes
CA San Joaquin Valley         3,842,165 8 Mod 70 3,842,586 8 Ext 0.115
   3,842,165 8 Mod 21.8                
DC-MD-VA Washington                 5,136,216 15 Mod 0.099
   5,047,479 14 Mod 15.8                
GA Atlanta 5,265,299 22 Mod 18.0                
KY-IN Louisville 1,018,904 5 Mod 16.9                
MD Baltimore                 2,662,691 6 Ser 0.103
   2,662,691 6 Mod 16.7                
MO-IL St. Louis                 2,594,238 9
[Split]
Mod 0.092
   2,572,706 9 Mod 17.5                
MT Libby 9,429 1 Mod 16.2                
PA Harrisburg-Lebanon-Carlisle 637,074 3 Mod 15.8                
           1,072,046 4 Mod 36        
PA Johnstown 156,923 2 Mod 15.8                
           156,923 2 Mod see Design
Value Notes
       
PA Lancaster 519,445 1 Mod 17.0                
           519,445 1 Mod 37        
PA Pittsburgh-Beaver Valley 20,789 1 Mod 21.2 2,142,981 8 Mod 36 2,356,285 7 Mod 0.094
   2,142,981 8 Mod 21.2                
           20,789 1 Mod 53        
PA Reading 411,442 1 Mod 16.4                
PA York 434,972 1 Mod 17.3                
PA-NJ-DE Philadelphia-Wilmington         5,798,152 9
[Split]
Mod 36 7,796,590 18 Mod 0.106
   5,798,152 9
[Split]
Mod 16.4                
TN Knoxville 681,523 5 Mod 16.8                
           681,523 5 Mod see Design
Value Notes
       
WV-MD Martinsburg - Hagerstown 251,599 2 Mod 16.3                

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.


Go Top

Jump to main content.