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Status of Designated Areas for the SO2 (1971) NAAQS

by Area Name, State
NOTE: As of 03/12/2021, these reports are no longer being updated. For the latest information, see the SIP Status Tools.




SO2 (1971) Areas    Return to NAAQS selection
 
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Area		 State Status Designation
Date		 Classification 2010
Population
(state portion)		 Meets NAAQS
Basis		 Design Value
Annual/24-Hr
(ppb)
(entire area)		 Meets
NAAQS		 SIP
Requirements
Original/
Approved		 Clean Air
Determination
Citation
Effective Date
Click to view
FR notice 		Redesignation
Request Date		 Redesignation
Citation
Effective Date
Click to view
FR notice
Ajo AZ Maintenance 11/15/1990   8,823     /     1 / 1  
 		 06/18/2002 01/02/2004
68 FR 62239
Allegheny County Air Basin: Hazelwood monitor PA Maintenance 09/12/1978   387,190     /     0 / 0  
 		   08/20/2004
69 FR 43522
AQCR 012: Portions of Grant County NM Maintenance 11/15/1990   29,514     /     0 / 0  
 		 11/25/2002 11/17/2003
68 FR 54672
AQCR 109-Millinocket ME Maintenance 03/03/1978   5,526     /     0 / 0  
 		 04/30/1984 07/01/1997
62 FR 24038
AQCR 131: Anoka, Carver, Dakota, Hennepin, Ramsey, Scott, and Washington counties (Minneapolis-St. Paul) MN Maintenance 11/15/1990   2,849,567     /     1 / 1  
 		 11/02/1995 07/14/1997
62 FR 26230
AQCR 237: Brown County: Green Bay sub-city area WI Maintenance 03/03/1978   248,004     /     0 / 0  
 		 05/07/1987 02/26/1992
57 FR 3013
AQCR 238: Marathon County: Rothschild Sub-city area, Rib Mountain, Weston WI Maintenance 11/15/1990   134,064     /     0 / 0  
 		 11/17/2000 07/29/2002
67 FR 37328
AQCR 238: Oneida County: Rhinelander Sub-city area WI Maintenance 11/15/1990   35,996     /     1 / 1  
 		 11/15/1999 01/16/2001
65 FR 68901
AQCR 239: Milwaukee County: Milwaukee sub-city area WI Maintenance 10/10/1980   947,779     /     0 / 0  
 		 05/12/1986 07/23/1993
58 FR 29783
AQCR 240: Dane County: Madison sub-city area WI Maintenance 03/03/1978   488,074     /     0 / 0  
 		 12/22/1986 07/23/1993
58 FR 29787
Armstrong County: Madison Twp, Mahoning Twp, Boggs Twp, Washington Twp, Pine Twp PA Nonattainment 11/15/1990   4,516     /     0 / 0  
 		    
Benton County; (part) TVA Johnsonville TN Maintenance 11/15/1990   16,489     /     0 / 0  
 		 12/22/1993 01/26/1998
62 FR 62695
Boyd County (part) KY Maintenance 11/15/1990   49,543     /     0 / 0  
 		 05/13/2005 07/24/2006
71 FR 29786
Central Steptoe Valley NV Maintenance 11/15/1990   2,165     /     1 / 1  
 		 02/14/1995 06/11/2002
67 FR 17939
Colbert County (part); TVA Colbert Plant AL Maintenance 03/03/1978   54,429     /     0 / 0  
 		 04/08/1992 03/15/1993
58 FR 3848
Coshocton County; Franklin Township OH Maintenance 10/05/1978   1,229     /     1 / 1  
 		 10/26/1995 07/05/2000
65 FR 35577
Cuyahoga County (part) OH Maintenance 10/05/1978   996,159     /     1 / 1  
 		 09/27/2003 02/28/2005
70 FR 4023
Douglas AZ Maintenance 11/15/1990   17,495     /     1 / 1  
 		 12/18/2001 05/01/2006
71 FR 9941
East Helena Area MT Maintenance 11/15/1990   2,669     /     2 / 2  
 		 10/26/2019 10/11/2019
84 FR 47897
Gallia County; Addison Township OH Maintenance 10/05/1978   2,197     /     1 / 1  
 		 10/26/1995 07/05/2000
65 FR 35577
Hancock County (Part) The city of Weirton, including Butler and Clay: Magisterial Districts WV Maintenance 01/20/1994   15,801     /     1 / 1  
 		 07/27/2004 03/11/2005
70 FR 1664
Hayden AZ Nonattainment 11/15/1990   4,844 2019 5 / 33 Yes 1 / 0  
 		 06/27/2002  
Humphreys County; (part) TVA Johnsonville TN Maintenance 11/15/1990   18,539     /     0 / 0  
 		 12/22/1993 01/26/1998
62 FR 62695
Jefferson County; (part) Steubenville & Mingo Junction OH Maintenance 10/05/1978   69,712     /     1 / 1  
 		 08/24/1998 09/29/1999
64 FR 47113
La Porte County: (part) IN Maintenance 03/03/1978   111,471     /     0 / 0  
 		 06/17/1996 01/14/1997
61 FR 58482
Lake County: (part) IN Maintenance 03/03/1978   496,000     /     0 / 0  
 		 06/21/2005 10/26/2005
70 FR 56129
Lake County; (part) Eastlake, Timberlake, Lakeline, Willoughby, Mentor OH Maintenance 10/05/1978   229,760     /     1 / 1  
 		 08/20/1998 09/29/1999
64 FR 47113
Lauderdale County (part); TVA Colbert Plant AL Maintenance 03/03/1978   92,707     /     0 / 0  
 		 04/08/1992 03/15/1993
58 FR 3848
Laurel Area MT Nonattainment 11/15/1990   6,525     /     1 / 1  
 		    
Lorain County (part) OH Maintenance 10/05/1978   301,074     /     1 / 1  
 		 10/26/1995 07/05/2000
65 FR 35577
Lucas County (part) OH Maintenance 10/05/1978   441,812     /     1 / 1  
 		 03/30/1999 03/18/2004
69 FR 4856
Marion County: Lawrence, Washington, and Warrant Townships IN Maintenance 03/03/1978   349,929     /     0 / 0  
 		 03/20/1996 01/14/1997
61 FR 58482
Miami AZ Maintenance 11/15/1990   1,514     /     1 / 1  
 		 06/26/2002 03/26/2007
72 FR 3061
Morenci AZ Maintenance 11/15/1990   8,437     /     1 / 1  
 		 06/21/2002 06/25/2004
69 FR 22447
Morgan County: Center Township OH Maintenance 10/05/1978   15,053     /     0 / 0  
 		 08/06/1992 10/21/1994
59 FR 48403
Muhlenberg County KY Maintenance 11/15/1990   31,499     /     0 / 0  
 		 12/03/1997 10/19/1998
63 FR 44143
Muscatine County; (part) IA Maintenance 04/11/1994   24,633     /     1 / 1  
 		 04/25/1997 05/18/1998
63 FR 13343
New Manchester-Grant magisterial district in Hancock County WV Maintenance 11/15/1990   8,706     /     1 / 1  
 		 07/27/2004 08/08/2005
70 FR 33364
NJ portion of the Northeast Pennsylvania-Upper Delaware Valley Interstate AQCR: (part) NJ Nonattainment 11/15/1990   108,696     /     1 / 0 09/20/2019
84 FR 43504		    
Olmsted; City of Rochester MN Maintenance 03/03/1978   106,769     /     0 / 0  
 		 11/04/1999 05/08/2001
66 FR 14087
Peoria County: Hollis twp IL Maintenance 03/03/1978   2,032     /     0 / 0  
 		 11/10/1994 06/05/1995
60 FR 16996
Peoria County: Peoria IL Maintenance 03/03/1978   127,507     /     0 / 0  
 		 11/10/1994 06/05/1995
60 FR 16996
Piti Power Plant GU Nonattainment 11/15/1990   1,000     /     1 / 1  
 		    
Polk County TN Maintenance 11/15/1990   16,825     /     0 / 0  
 		 07/17/1990 01/26/1998
62 FR 62695
Salt Lake County UT Nonattainment 11/15/1990   1,029,655 2019 1 / 2 Yes 2 / 2  
 		 04/19/2005  
San Manuel AZ Maintenance 11/15/1990   16,158     /     1 / 1  
 		 06/07/2007 03/18/2008
73 FR 3396
Tanguisson Power Plant GU Nonattainment 11/15/1990   1,000     /     1 / 1  
 		    
Tazewell County: Groveland twp IL Maintenance 03/03/1978   22,991     /     0 / 0  
 		 11/10/1994 06/05/1995
60 FR 16996
Tooele County (part) UT Nonattainment 11/15/1990   58,218     /     2 / 2  
 		 04/19/2005  
Vigo County IN Maintenance 03/03/1978   107,848     /     0 / 0  
 		 06/17/1996 01/14/1997
61 FR 58482
Warren County: Conewago Twp PA Maintenance 11/15/1990   3,594     /     1 / 1  
 		   08/02/2004
69 FR 39860
Warren County: Warren Boro, Pleasant Twp, Glade Twp PA Maintenance 01/20/1994   15,781     /     1 / 1  
 		   08/02/2004
69 FR 39860
Washington County: Waterford Township OH Maintenance 10/05/1978   61,777     /     0 / 0  
 		 08/06/1992 10/21/1994
59 FR 48403
Wayne County: Boston, Center, Franklin, Wayne & Webster Townships IN Maintenance 03/03/1978   52,325     /     0 / 0  
 		 06/17/1996 01/14/1997
61 FR 58482
We have made our best effort to ensure that the data contained in these reports is accurate. We note that there may be brief delays in updating the reports as we receive new state submissions and we take rulemaking action on plans. In order to assist us in providing accurate information, we request that you contact us by clicking on the "Contact Us" link near the top of this page with any comments regarding or corrections to the posted information, including concerns about whether the entries reflect the most recent status.

Current and historical design value data can be found on the EPA Air Quality Design Values website and the EPA Green Book contains comprehensive nonattainment area, designation status, and historical information.

SIP Status Reports