EPA Approved Nonregulatory Provisions and Quasi-Regulatory Measures in the Mississippi SIP
About this website: This website does not necessarily represent the current version of the SIPs, TIPs, or FIPs. The official SIPs, TIPs, and FIPs are contained in regulations promulgated in the Federal Register and codified in the U.S. Code of Federal Regulations (CFR). While we make every effort to maintain the accuracy of the files accessible here, inconsistencies may occur. Please contact us using the link below if you find any errors in these files.
Updated as of: May 27, 2026.
EPA Contact: EPA Region 4: Jia Shi (404-562-9448)
EPA Approved Mississippi Non-Regulatory Provisions
| Name of non-regulatory SIP provision | Applicable geographic or nonattainment area | State Submittal or State Effective Date | EPA Approval Date | FR Citation | Explanation |
|---|---|---|---|---|---|
| 110(a)(1) and (2) Infrastructure Requirements for the 1997 8-Hour Ozone National Ambient Air Quality Standards | Mississippi | 12/7/2007 | 7/13/2011 | 76 FR 41123 | For the 1997 8-hour ozone NAAQS. |
| Regional Haze Plan | Statewide | 9/22/2008 | 6/27/2012 | 77 FR 38191 | |
| Regional Haze Plan Update—E. I. Dupont Reasonable Progress and Mississippi Phosphates BART Determinations | Statewide | 5/9/2011 | 6/27/2012 | 77 FR 38191 | |
| 110(a)(1) and (2) Infrastructure Requirements for 1997 Fine Particulate Matter National Ambient Air Quality Standards | Mississippi | 12/7/2007 | 10/9/2012 | 77 FR 61276 | With the exception of sections 110(a)(2)(D)(i), 110(a)(2)(E)(ii) and 110(a)(2)(G). |
| 110(a)(1) and (2) Infrastructure Requirements for 2006 Fine Particulate Matter National Ambient Air Quality Standards | Mississippi | 10/6/2009 | 10/9/2012 | 77 FR 61276 | With the exception of sections 110(a)(2)(D)(i), 110(a)(2)(E)(ii) and 110(a)(2)(G). |
| 110(a)(2)(G) Infrastructure Requirement for the 1997 and 2006 Fine Particulate Matter National Ambient Air Quality Standards | Mississippi | 7/26/2012 | 10/9/2012 | 77 FR 61279 | |
| 110(a)(2)(D)(i)(I) Infrastructure Requirements for the 2006 24-hour PM2.5 NAAQS | Mississippi | 10/6/2009 | 10/11/2012 | 77 FR 61727 | EPA partially disapproved this SIP submission to the extent that it relied on the Clean Air Interstate Rule to meet the 110(a)(2)(D)(i)(I) requirements for the 2006 24-hour PM2.5 NAAQS. |
| 110(a)(2)(E)(ii) Infrastructure Requirement for the 1997 and 2006 Fine Particulate Matter National Ambient Air Quality Standards | Mississippi | 10/11/2012 | 4/8/2013 | 78 FR 20793 | EPA disapproved the State's 110(a)(2)(E)(ii) as it relates to section 128(a)(2), the significant portion of income requirement. |
| 110(a)(1) and (2) Infrastructure Requirements for 1997 Fine Particulate Matter National Ambient Air Quality Standards | Mississippi | 12/7/2007 | 4/12/2013 | 78 FR 21841 | Addressing element 110(a)(2)(D)(i)(II) prong 3 only |
| 110(a)(1) and (2) Infrastructure Requirements for 2006 Fine Particulate Matter National Ambient Air Quality Standards | Mississippi | 10/6/2009 | 4/12/2013 | 78 FR 21841 | Addressing element 110(a)(2)(D)(i)(II) prong 3 only |
| Transportation Conformity Interagency Consultation And General Provisions | DeSoto County portion of Memphis, TN-AR-MS 2008 8-hour Ozone Nonattainment Area | 5/31/2013 | 11/13/2013 | 78 FR 67952 | |
| 110(a)(1) and (2) Infrastructure Requirements for 1997 Fine Particulate Matter National Ambient Air Quality Standards | Mississippi | 12/7/2007 | 5/7/2014 | 79 FR 26143 | Addressing prong 4 of section 110(a)(2)(D)(i) only. |
| 110(a)(1) and (2) Infrastructure Requirements for 2006 Fine Particulate Matter National Ambient Air Quality Standards | Mississippi | 10/6/2009 | 5/7/2014 | 79 FR 26143 | Addressing prong 4 of section 110(a)(2)(D)(i) only. |
| 110(a)(1) and (2) Infrastructure Requirements for the 2008 8-Hour Ozone National Ambient Air Quality Standards | Mississippi | 7/26/2012 | 3/2/2015 | 80 FR 11131 | With the exception of sections: 110(a)(2)(C) and (J) concerning PSD permitting requirements; 110(a)(2)(D)(i)(I) and (II) (prongs 1 through 4) concerning interstate transport requirements; 110(a)(2)(E)(ii) concerning state board majority requirements respecting significant portion of income; and 110(a)(2)(J) concerning visibility requirements. |
| 110(a)(1) and (2) Infrastructure Requirements for the 2008 Lead NAAQS | Mississippi | 11/17/2011 | 3/18/2015 | 80 FR 14019 | Addressing the PSD permitting requirements of sections 110(a)(2)(C), 110(a)(2)(D)(i)(II) (prong 3) and 110(a)(2)(J) only. |
| 110(a)(1) and (2) Infrastructure Requirements for the 2008 Ozone NAAQS | Mississippi | 5/29/2012 and amended on 7/26/2012 | 3/18/2015 | 80 FR 14019 | Addressing the PSD permitting requirements of sections 110(a)(2)(C), 110(a)(2)(D)(i)(II) (prong 3) and 110(a)(2)(J) only. |
| 110(a)(1) and (2) Infrastructure Requirements for the 2010 NO2 NAAQS | Mississippi | 2/28/2013 | 3/18/2015 | 80 FR 14019 | Addressing the PSD permitting requirements of sections 110(a)(2)(C), 110(a)(2)(D)(i)(II) (prong 3) and 110(a)(2)(J) only. |
| 110(a)(1) and (2) Infrastructure Requirements for the 2008 Lead National Ambient Air Quality Standards 110(a)(2)(E)(ii) Infrastructure Requirement for 2008 Lead National Ambient Air Quality Standards | 11/4/2011 | 3/30/2015 | 80 FR 16568 | With the exception of provisions pertaining to PSD permitting requirements in sections 110(a)(2)(C), prong 3 of D(i) and (J) and the majority of requirements respecting significant portion of income of section 110(a)(2)(E)(ii) (related to section 128(a)(2)). | |
| 2011 Base Year Emissions Inventory for the Mississippi portion of the Memphis, TN-MS-AR 2008 Ozone NAAQS Nonattainment Area | DeSoto County portion of Memphis, TN-AR-MS 2008 8-hour Ozone Nonattainment Area | 1/14/2015 | 7/2/2015 | 80 FR 37985 | |
| 110(a)(1) and (2) Infrastructure Requirements for the 2008 Ozone NAAQS | Mississippi | 7/26/2012 | 8/12/2015 | 80 FR 48255 | Addressing the visibility requirements of 110(a)(2)(J) only. |
| 2008 8-hour ozone Maintenance Plan for the DeSoto County portion of Memphis, TN-AR-MS Nonattainment Area | DeSoto County portion of Memphis, TN-AR-MS Nonattainment Area | 12/2/2015 | 4/8/2016 | 81 FR 20543 | |
| 110(a)(1) and (2) Infrastructure Requirements for the 2010 1-hour NO2 National Ambient Air Quality Standard | Mississippi | 2/28/2013 | 9/16/2016 | 81 FR 67305 | With the exception of sections: 110(a)(2)(C) and (J) concerning PSD permitting requirements; 110(a)(2)(D)(i)(I) and (II) (prongs 1 through 4) concerning interstate transport requirements and the state board majority requirements respecting significant portion of income of section 110(a)(2)(E)(ii). |
| 110(a)(1) and (2) Infrastructure Requirements for the 2010 1-hour SO2 NAAQS | Mississippi | 6/20/2013 | 9/30/2016 | 81 FR 67178 | With the exception of the interstate transport requirements of section 110(a)(2)(D)(i)(I) and (II) (prongs 1, 2, and 4) and the state board majority requirements respecting significant portion of income of section 110(a)(2)(E)(ii). |
| 110(a)(1) and (2) Infrastructure Requirements for the 2012 Annual PM2.5 NAAQS | Mississippi | 12/11/2015 | 12/12/2016 | 81 FR 89393 | With the exception of sections: 110(a)(2)(C) and (J) concerning PSD permitting requirements; 110(a)(2)(D)(i)(I) and (II) (prongs 1 through 4) concerning interstate transport requirements and the state board majority requirements respecting significant portion of income of section 110(a)(2)(E)(ii). |
| Good Neighbor Provisions (Section 110(a)(2)(D)(i)(I) for the 2010 1-hour NO2 NAAQS | Mississippi | 5/23/2016 | 12/22/2016 | 81 FR 93824 | |
| 110(a)(1) and (2) Infrastructure Requirements for the 2012 Annual PM2.5 NAAQS | Mississippi | 12/8/2015 | 9/25/2018 | 83 FR 48387 | Addressing Prongs 1 and 2 of section 110(a)(2)(D)(i)(I) only. |
| 110(a)(1) and (2) Infrastructure Requirements for the 1997 Annual PM2.5 NAAQS | Mississippi | 6/25/2018 | 10/4/2018 | 83 FR 50014 | Addressing the state board requirements of sections 128 and 110(a)(2)(E)(ii) only. |
| 110(a)(1) and (2) Infrastructure Requirements for the 2006 24-hour PM2.5 NAAQS | Mississippi | 6/25/2018 | 10/4/2018 | 83 FR 50014 | Addressing the state board requirements of sections 128 and 110(a)(2)(E)(ii) only. |
| 110(a)(1) and (2) Infrastructure Requirements for the 2012 24-hour PM2.5 NAAQS | Mississippi | 6/25/2018 | 10/4/2018 | 83 FR 50014 | Addressing the state board requirements of sections 128 and 110(a)(2)(E)(ii) only. |
| 110(a)(1) and (2) Infrastructure Requirements for the 2008 Lead NAAQS | Mississippi | 6/25/2018 | 10/4/2018 | 83 FR 50014 | Addressing the state board requirements of sections 128 and 110(a)(2)(E)(ii) only. |
| 110(a)(1) and (2) Infrastructure Requirements for the 2008 8-hour Ozone NAAQS | Mississippi | 6/25/2018 | 10/4/2018 | 83 FR 50014 | Addressing the state board requirements of sections 128 and 110(a)(2)(E)(ii) only. |
| 110(a)(1) and (2) Infrastructure Requirements for the 2010 NO2 NAAQS | Mississippi | 6/25/2018 | 10/4/2018 | 83 FR 50014 | Addressing the state board requirements of sections 128 and 110(a)(2)(E)(ii) only. |
| 110(a)(1) and (2) Infrastructure Requirements for the 2010 SO2 NAAQS | Mississippi | 6/25/2018 | 10/4/2018 | 83 FR 50014 | Addressing the state board requirements of sections 128 and 110(a)(2)(E)(ii) only. |
| 110(a)(1) and (2) Infrastructure Requirements for the 2012 Annual PM2.5 NAAQS | Mississippi | 12/11/2015 | 12/18/2018 | 83 FR 64746 | Addressing the PSD permitting requirements of sections 110(a)(2)(C), 110(a)(2)(D)(i)(II) (prong 3) and 110(a)(2)(J) only |
| Regional Haze Progress Report | Mississippi | 10/4/2018 | 10/6/2021 | 86 FR 55501 | |
| BART | Mississippi | 8/13/2020 | 10/6/2021 | 86 FR 55501 | |
| 110(a)(1) and (2) Infrastructure Requirements for the 2015 8-hour ozone NAAQS | Mississippi | 1/25/2021 | 9/22/2022 | 87 FR 57832 | |
| 110(a)(1) and (2) Infrastructure Requirements for the 2015 8-hour Ozone NAAQS | Mississippi | 1/25/2021 | 3/1/2023 | 88 FR 12833 |