SIP Status Reports
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Status of Kentucky Designated Areas
Status of Kentucky Designated Areas
Kentucky Areas by NAAQSNOTE: As of 03/12/2021, these reports are no longer being updated. For the latest information, see the SIP Status Tools.
Jump to Kentucky section for: CO (1971) Lead (1978) Lead (2008) NO2 (1971) Ozone-1Hr (1979) Ozone-8Hr (1997) Ozone-8Hr (2008) Ozone-8Hr (2015) PM-10 (1987) PM-2.5 (1997) PM-2.5 (2006) PM-2.5 (2012) SO2 (1971) SO2 (2010)
Kentucky CO (1971) Areas Return to map |
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| No designated areas for this pollutant. | |||||||||||
Kentucky Lead (1978) Areas Return to map Top of page |
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| No designated areas for this pollutant. | |||||||||||
Kentucky Lead (2008) Areas Return to map Top of page |
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| No designated areas for this pollutant. | |||||||||||
Kentucky NO2 (1971) Areas Return to map Top of page |
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| No designated areas for this pollutant. | |||||||||||
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Kentucky Ozone-1Hr (1979) Areas Return to map Top of page |
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| Click on the Area name to view SIP Required Elements Area |
Status | Designation Date |
Classification | 2010 Population (state portion) |
Meets NAAQS Basis |
Design Value Annual (ppm) (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 |
| Cincinnati-Hamilton Area | Maintenance (NAAQS revoked) | 11/15/1990 | Moderate | 368,867 | 2017-2019 | 0.090 | Yes | 21 / 20 | |
12/12/1999 | 08/30/2002 67 FR 49600 |
| Edmonson County Area | Maintenance (NAAQS revoked) | 01/06/1992 | Rural Transport (Marginal) | 12,161 | 2017-2019 | 0.069 | Yes | 3 / 3 | |
01/20/1993 | 01/03/1995 59 FR 55053 |
| Huntington-Ashland Area | Maintenance (NAAQS revoked) | 11/15/1990 | Moderate | 66,676 | 2017-2019 | 0.074 | Yes | 22 / 22 | |
11/17/1993 | 06/29/1995 60 FR 33748 |
| Lexington-Fayette Area | Maintenance (NAAQS revoked) | 01/06/1992 | Marginal | 342,976 | 2017-2019 | 0.071 | Yes | 3 / 3 | |
01/20/1993 | 11/13/1995 60 FR 47089 |
| Louisville Area | Maintenance (NAAQS revoked) | 11/15/1990 | Moderate | 769,082 | 2017-2019 | 0.089 | Yes | 23 / 23 | |
11/23/2001 66 FR 53665 |
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| Owensboro Area | Maintenance (NAAQS revoked) | 01/06/1992 | Marginal | 97,517 | 2017-2019 | 0.076 | Yes | 3 / 3 | |
01/20/1993 | 01/03/1995 59 FR 55053 |
| Paducah Area | Maintenance (NAAQS revoked) | 01/06/1992 | Marginal | 32,690 | 2017-2019 | 0.076 | Yes | 3 / 3 | |
01/20/1993 | 04/10/1995 60 FR 7124 |
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Kentucky Ozone-8Hr (1997) Areas Return to map Top of page |
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| Click on the Area name to view SIP Required Elements Area |
Status | Designation Date |
Classification | 2010 Population (state portion) |
Meets NAAQS Basis |
Design Value Annual (ppm) (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 |
| Cincinnati-Hamilton Area | Maintenance (NAAQS revoked) | 06/15/2004 | Former Subpart 1 | 368,867 | 2017-2019 | 0.074 | Yes | 4 / 0 | |
01/28/2010 | 08/05/2010 75 FR 47218 |
| Clarksville-Hopkinsville Area | Maintenance (NAAQS revoked) | 06/15/2004 | Former Subpart 1 | 73,955 | 2017-2019 | 0.058 | Yes | 4 / 0 | |
03/21/2005 | 02/24/2006 71 FR 4047 |
| Huntington-Ashland Area | Maintenance (NAAQS revoked) | 06/15/2004 | Former Subpart 1 | 49,542 | 2017-2019 | 0.062 | Yes | 4 / 0 | |
09/29/2006 | 09/04/2007 72 FR 43172 |
| Louisville Area | Maintenance (NAAQS revoked) | 06/15/2004 | Former Subpart 1 | 875,731 | 2017-2019 | 0.071 | Yes | 4 / 0 | |
06/07/2006 | 08/06/2007 72 FR 36601 |
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Kentucky Ozone-8Hr (2008) Areas Return to map Top of page |
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| Click on the Area name to view SIP Required Elements Area |
Status | Designation Date |
Classification | 2010 Population (state portion) |
Meets NAAQS Basis |
Design Value Annual (ppm) (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 |
| Cincinnati | Maintenance | 07/20/2012 | Marginal | 352,751 | 2017-2019 | 0.074 | Yes | 3 / 3 | 06/03/2016 81 FR 26697 |
08/26/2016 | 07/05/2017 82 FR 30976 |
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Kentucky Ozone-8Hr (2015) Areas Return to map Top of page |
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| Click on the Area name to view SIP Required Elements Area |
Status | Designation Date |
Classification | 2010 Population (state portion) |
Meets NAAQS Basis |
Design Value Annual (ppm) (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 |
| Cincinnati | Nonattainment | 08/03/2018 | Marginal | 347,968 | 2017-2019 | 0.074 | No | 3 / 0 | |
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| Louisville | Nonattainment | 08/03/2018 | Marginal | 875,731 | 2017-2019 | 0.072 | No | 3 / 0 | |
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Kentucky PM-10 (1987) Areas Return to map Top of page |
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| No designated areas for this pollutant. | |||||||||||
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Kentucky PM-2.5 (1997) Areas Return to map Top of page |
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| Click on the Area name to view SIP Required Elements Area |
Status | Designation Date |
Classification | 2010 Population (state portion) |
Meets NAAQS Basis |
Design Value Annual (µg/m3) (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 |
| Cincinnati-Hamilton | Maintenance (NAAQS revoked) | 04/05/2005 | Former Subpart 1 | 368,867 | 2017-2019 | 11.8 | Yes | 5 / 1 | 10/31/2011 76 FR 60373 |
01/27/2011 | 12/15/2011 76 FR 77903 |
| Huntington-Ashland | Maintenance (NAAQS revoked) | 04/05/2005 | Former Subpart 1 | 52,397 | 2017-2019 | 7.5 | Yes | 5 / 2 | 10/07/2011 76 FR 55542 |
02/08/2012 | 12/26/2012 77 FR 75865 |
| Louisville | Maintenance (NAAQS revoked) | 04/05/2005 | Moderate | 815,415 | 2017-2019 | 9.8 | Yes | 8 / 3 | 10/07/2011 76 FR 55544 |
03/05/2012 | 04/07/2017 82 FR 16943 |
Kentucky PM-2.5 (2006) Areas Return to map Top of page |
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| No designated areas for this pollutant. | |||||||||||
Kentucky PM-2.5 (2012) Areas Return to map Top of page |
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| No designated areas for this pollutant. | |||||||||||
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Kentucky SO2 (1971) Areas Return to map Top of page |
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| Click on the Area name to view SIP Required Elements Area |
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 |
| Boyd County (part) | Maintenance | 11/15/1990 | 49,543 | / | 0 / 0 | |
05/13/2005 | 07/24/2006 71 FR 29786 |
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| Muhlenberg County | Maintenance | 11/15/1990 | 31,499 | / | 0 / 0 | |
12/03/1997 | 10/19/1998 63 FR 44143 |
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Kentucky SO2 (2010) Areas Return to map Top of page |
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| Click on the Area name to view SIP Required Elements Area |
Status | Designation Date |
Classification | 2010 Population (state portion) |
Meets NAAQS Basis |
3 Year 1-Hour Design Value (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 |
| Campbell-Clermont Counties | Maintenance | 10/04/2013 | 17,571 | 2017-2019 | 11 | Yes | 6 / 3 | 03/10/2017 82 FR 13227 |
02/22/2016 | 03/10/2017 82 FR 13227 |
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| Jefferson County | Maintenance | 10/04/2013 | 3,185 | 2017-2019 | 15 | Yes | 6 / 6 | |
12/09/2019 | 09/08/2020 85 FR 47670 |
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| 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. The level of the 1-hour NAAQS for sulfur dioxide is 75 parts per billion (ppb) calculated as the 3-year average of the 99th percentile of the annual distribution of daily maximum 1-hour average concentrations. |