SIP Status Reports
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Status of Missouri Designated Areas
Status of Missouri Designated Areas
Missouri Areas by NAAQSNOTE: As of 03/12/2021, these reports are no longer being updated.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 Missouri 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)
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Missouri CO (1971) Areas Return to map |
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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 |
| St. Louis Area | Maintenance | 11/15/1990 | Not Classified | 1,227,527 | 2019 | 1.7 | Yes | 1 / 1 | |
06/13/1997 | 03/29/1999 64 FR 3855 |
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Missouri Lead (1978) 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 |
| Iron County (part); Within boundaries of Dent Township | Maintenance | 01/06/1992 | 1,194 | 2009-2010 | No Data | 1 / 1 | |
05/17/2000 | 12/18/2000 65 FR 62295 |
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| Iron County (part); Within boundaries of Liberty and Arcadia Townships | Maintenance | 01/06/1992 | 6,066 | 2009-2010 | No Data | 1 / 1 | |
11/29/2004 69 FR 63072 |
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| Jefferson County (part); Within city limits of Herculaneum | Nonattainment | 01/06/1992 | 2,560 | 2009-2010 | 2.9 | No | 1 / 1 | |
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Missouri Lead (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 (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 |
| Iron, Dent, and Reynolds Counties | Nonattainment | 12/31/2010 | 460 | 2017-2019 | 0.13 | Yes | 6 / 6 | |
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| Jefferson County | Nonattainment | 12/31/2010 | 4,814 | 2017-2019 | 0.23 | No | 6 / 6 | |
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Missouri NO2 (1971) Areas Return to map Top of page |
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| No designated areas for this pollutant. | |||||||||||
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Missouri 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 |
| Kansas City Area | Maintenance (NAAQS revoked) | 11/15/1990 | Sub-marginal | 985,419 | 2017-2019 | 0.087 | Yes | 0 / 0 | |
10/09/1991 | 07/23/1992 57 FR 27939 |
| St. Louis Area | Maintenance (NAAQS revoked) | 11/15/1990 | Serious | 1,998,958 | 2017-2019 | 0.098 | Yes | 27 / 23 | |
12/06/2002 | 05/12/2003 68 FR 25418 |
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Missouri 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 |
| St. Louis Area | Maintenance (NAAQS revoked) | 06/15/2004 | Subpart 2/Moderate | 1,998,958 | 2017-2019 | 0.071 | Yes | 53 / 49 | 05/30/2012 77 FR 25363 |
11/03/2011 | 02/20/2015 80 FR 9207 |
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Missouri 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 |
| St. Louis-St. Charles-Farmington | Maintenance | 07/20/2012 | Marginal | 1,998,958 | 2017-2019 | 0.071 | Yes | 3 / 3 | 08/26/2016 81 FR 41444 |
09/15/2016 | 09/20/2018 83 FR 47572 |
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Missouri 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 |
| St. Louis | Nonattainment | 08/03/2018 | Marginal | 1,696,841 | 2017-2019 | 0.071 | No | 3 / 0 | |
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Missouri PM-10 (1987) Areas Return to map Top of page |
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| No designated areas for this pollutant. | |||||||||||
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Missouri 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 |
| St. Louis | Maintenance (NAAQS revoked) | 04/05/2005 | Moderate | 1,998,958 | 2017-2019 | 10.3 | Yes | 8 / 0 | 07/27/2012 77 FR 38183 |
09/01/2011 | 10/02/2018 83 FR 38033 |
Missouri PM-2.5 (2006) Areas Return to map Top of page |
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| No designated areas for this pollutant. | |||||||||||
Missouri PM-2.5 (2012) Areas Return to map Top of page |
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| No designated areas for this pollutant. | |||||||||||
Missouri SO2 (1971) Areas Return to map Top of page |
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| No designated areas for this pollutant. | |||||||||||
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Missouri 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 |
| Jackson County | Nonattainment | 10/04/2013 | 57,293 | 2017-2019 | 10 | Yes | 6 / 2 | 07/09/2020 85 FR 41193 |
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| Jefferson County | Nonattainment | 10/04/2013 | 61,933 | 2017-2019 | 14 | Yes | 6 / 2 | 10/13/2017 82 FR 42945 |
12/27/2017 | ||
| 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. |