SIP Status Reports
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Status of Designated Areas for the SO2 (1971) NAAQS
Status of Designated Areas for the SO2 (1971) NAAQS
by Area Name, StateNOTE: As of 03/12/2021, these reports are no longer being updated.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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Click on the Area name to view SIP Required Elements 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 |
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Allegheny County Air Basin: Hazelwood monitor | PA | Maintenance | 09/12/1978 | 387,190 | / | 0 / 0 | |
08/20/2004 69 FR 43522 |
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AQCR 012: Portions of Grant County | NM | Maintenance | 11/15/1990 | 29,514 | / | 0 / 0 | |
11/25/2002 | 11/17/2003 68 FR 54672 |
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AQCR 109-Millinocket | ME | Maintenance | 03/03/1978 | 5,526 | / | 0 / 0 | |
04/30/1984 | 07/01/1997 62 FR 24038 |
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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 |
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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 |
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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 |
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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 |
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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 |
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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 |
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Armstrong County: Madison Twp, Mahoning Twp, Boggs Twp, Washington Twp, Pine Twp | PA | Nonattainment | 11/15/1990 | 4,516 | / | 0 / 0 | |
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Benton County; (part) TVA Johnsonville | TN | Maintenance | 11/15/1990 | 16,489 | / | 0 / 0 | |
12/22/1993 | 01/26/1998 62 FR 62695 |
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Boyd County (part) | KY | Maintenance | 11/15/1990 | 49,543 | / | 0 / 0 | |
05/13/2005 | 07/24/2006 71 FR 29786 |
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Central Steptoe Valley | NV | Maintenance | 11/15/1990 | 2,165 | / | 1 / 1 | |
02/14/1995 | 06/11/2002 67 FR 17939 |
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Colbert County (part); TVA Colbert Plant | AL | Maintenance | 03/03/1978 | 54,429 | / | 0 / 0 | |
04/08/1992 | 03/15/1993 58 FR 3848 |
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Coshocton County; Franklin Township | OH | Maintenance | 10/05/1978 | 1,229 | / | 1 / 1 | |
10/26/1995 | 07/05/2000 65 FR 35577 |
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Cuyahoga County (part) | OH | Maintenance | 10/05/1978 | 996,159 | / | 1 / 1 | |
09/27/2003 | 02/28/2005 70 FR 4023 |
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Douglas | AZ | Maintenance | 11/15/1990 | 17,495 | / | 1 / 1 | |
12/18/2001 | 05/01/2006 71 FR 9941 |
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East Helena Area | MT | Maintenance | 11/15/1990 | 2,669 | / | 2 / 2 | |
10/26/2019 | 10/11/2019 84 FR 47897 |
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Gallia County; Addison Township | OH | Maintenance | 10/05/1978 | 2,197 | / | 1 / 1 | |
10/26/1995 | 07/05/2000 65 FR 35577 |
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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 |
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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 |
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Jefferson County; (part) Steubenville & Mingo Junction | OH | Maintenance | 10/05/1978 | 69,712 | / | 1 / 1 | |
08/24/1998 | 09/29/1999 64 FR 47113 |
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La Porte County: (part) | IN | Maintenance | 03/03/1978 | 111,471 | / | 0 / 0 | |
06/17/1996 | 01/14/1997 61 FR 58482 |
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Lake County: (part) | IN | Maintenance | 03/03/1978 | 496,000 | / | 0 / 0 | |
06/21/2005 | 10/26/2005 70 FR 56129 |
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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 |
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Lauderdale County (part); TVA Colbert Plant | AL | Maintenance | 03/03/1978 | 92,707 | / | 0 / 0 | |
04/08/1992 | 03/15/1993 58 FR 3848 |
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Laurel Area | MT | Nonattainment | 11/15/1990 | 6,525 | / | 1 / 1 | |
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Lorain County (part) | OH | Maintenance | 10/05/1978 | 301,074 | / | 1 / 1 | |
10/26/1995 | 07/05/2000 65 FR 35577 |
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Lucas County (part) | OH | Maintenance | 10/05/1978 | 441,812 | / | 1 / 1 | |
03/30/1999 | 03/18/2004 69 FR 4856 |
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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 |
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Miami | AZ | Maintenance | 11/15/1990 | 1,514 | / | 1 / 1 | |
06/26/2002 | 03/26/2007 72 FR 3061 |
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Morenci | AZ | Maintenance | 11/15/1990 | 8,437 | / | 1 / 1 | |
06/21/2002 | 06/25/2004 69 FR 22447 |
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Morgan County: Center Township | OH | Maintenance | 10/05/1978 | 15,053 | / | 0 / 0 | |
08/06/1992 | 10/21/1994 59 FR 48403 |
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Muhlenberg County | KY | Maintenance | 11/15/1990 | 31,499 | / | 0 / 0 | |
12/03/1997 | 10/19/1998 63 FR 44143 |
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Muscatine County; (part) | IA | Maintenance | 04/11/1994 | 24,633 | / | 1 / 1 | |
04/25/1997 | 05/18/1998 63 FR 13343 |
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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 |
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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 |
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Olmsted; City of Rochester | MN | Maintenance | 03/03/1978 | 106,769 | / | 0 / 0 | |
11/04/1999 | 05/08/2001 66 FR 14087 |
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Peoria County: Hollis twp | IL | Maintenance | 03/03/1978 | 2,032 | / | 0 / 0 | |
11/10/1994 | 06/05/1995 60 FR 16996 |
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Peoria County: Peoria | IL | Maintenance | 03/03/1978 | 127,507 | / | 0 / 0 | |
11/10/1994 | 06/05/1995 60 FR 16996 |
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Piti Power Plant | GU | Nonattainment | 11/15/1990 | 1,000 | / | 1 / 1 | |
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Polk County | TN | Maintenance | 11/15/1990 | 16,825 | / | 0 / 0 | |
07/17/1990 | 01/26/1998 62 FR 62695 |
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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 |
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Tanguisson Power Plant | GU | Nonattainment | 11/15/1990 | 1,000 | / | 1 / 1 | |
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Tazewell County: Groveland twp | IL | Maintenance | 03/03/1978 | 22,991 | / | 0 / 0 | |
11/10/1994 | 06/05/1995 60 FR 16996 |
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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 |
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Warren County: Conewago Twp | PA | Maintenance | 11/15/1990 | 3,594 | / | 1 / 1 | |
08/02/2004 69 FR 39860 |
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Warren County: Warren Boro, Pleasant Twp, Glade Twp | PA | Maintenance | 01/20/1994 | 15,781 | / | 1 / 1 | |
08/02/2004 69 FR 39860 |
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Washington County: Waterford Township | OH | Maintenance | 10/05/1978 | 61,777 | / | 0 / 0 | |
08/06/1992 | 10/21/1994 59 FR 48403 |
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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. |