EPA Approved Nonregulatory Provisions and Quasi-Regulatory Measures in the Tennessee 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: Gillian Walshe-Langford (404-562-9583)
EPA-Approved Tennessee Non-Regulatory Provisions
| Name of non-regulatory SIP provision | Applicable geographic or nonattainment area | State Submittal or State Effective Date | EPA Approval Date | Explanation |
|---|---|---|---|---|
| Revision to Maintenance Plan Update for Knox County, Tennessee | Knox County, TN | 7/16/2003 | 2/2/2004, 69 FR 4852 | |
| Attainment Demonstrations for Early Action Compact Areas | Chattanooga, Nashville, and Tri-Cities Early Action Compact Areas | 12/31/2004 | 8/17/2021, 70 FR 50199 | With the exception of Tennessee Regulation Chapter 1200-3-29 and Nashville-Davidson County Regulation No. 8, with a State effective date of 2/26/2020. |
| 8-Hour Ozone Maintenance plan for the Montgomery County, Tennessee area | Montgomery County | 8/10/2005 | 9/22/2005, 70 FR 55559 | |
| Nashville 1-Hour Ozone Maintenance Plan | Nashville 1-Hour Ozone Maintenance Area | 6/11/2005 | 1/3/2006, 71 FR 21 | |
| Carbon Monoxide Second 10-Year Maintenance Plan for the Memphis/Shelby County Area | Memphis/Shelby | 5/10/2006 | 10/25/2006, 71 FR 62384 | |
| 8-Hour Ozone Maintenance plan for the Shelby County, Tennessee Area | Memphis, Shelby County | 1/16/2009 | 1/4/2010, 75 FR 56 | |
| Nashville 8-Hour Ozone 110(a)(1) Maintenance Plan | Nashville 8-Hour Ozone Attainment Area | 10/13/2010 | 1/28/2011, 76 FR 5078 | Maintenance plan for the 1997 8-hour ozone NAAQS. |
| 8-Hour Ozone Maintenance Plan for the Knoxville, Tennessee Area | Anderson, Blount, Jefferson, Knox, Loudon, and Sevier Counties, and the portion of Cocke County that falls within the boundary of the Great Smoky Mountains National Park | 7/14/2010 | 3/8/2011, 76 FR 12587 | For the 1997 8-hour ozone NAAQS. |
| Chattanooga; Fine Particulate Matter 2002 Base Year Emissions Inventory | Hamilton County | 10/15/2009 | 2/8/2012, 74 FR 6467 | |
| 110(a)(1) and (2) Infrastructure Requirements for the 1997 8-Hour Ozone National Ambient Air Quality Standards—Elements 110(a)(1) and (2)(C) and (J) | Tennessee | 12/14/2007 | 3/14/2012, 77 FR 14976 | |
| Regional Haze Plan (excluding Eastman Chemical Company BART determination) | Statewide | 4/4/2008 | 4/24/2012, 77 FR 24392 | BART emissions limits are listed in Section 7.5.3. |
| 110(a)(1) and (2) Infrastructure Requirements for the 1997 8-Hour Ozone National Ambient Air Quality Standards | Tennessee | 12/14/2007 | 7/23/2012, 77 FR 42997 | |
| 110(a)(1) and (2) Infrastructure Requirements for 1997 Fine Particulate Matter National Ambient Air Quality Standards | Tennessee | 12/14/2007 | 8/2/2012, 77 FR 45958 | |
| 110(a)(1) and (2) Infrastructure Requirements for 2006 Fine Particulate Matter National Ambient Air Quality Standards | Tennessee | 10/19/2009 | 8/2/2012, 77 FR 45958 | |
| Knoxville; 1997 Annual Fine Particulate Matter 2002 Base Year Emissions Inventory | Anderson, Blount, Knox, and Loudon Counties, and the portion of Roane County that falls within the census block that includes the Tennessee Valley Authority's Kingston Fossil Plant | 4/4/2008 | 8/21/2012, 77 FR 50378 | |
| Regional Haze Plan—Eastman Chemical Company BART determination | Statewide | 5/9/2012 | 11/27/2012, 77 FR 70689 | Applicable only to the Eastman Chemical BART determination. |
| 110(a)(1) and (2) Infrastructure Requirements for the 2008 8-Hour Ozone National Ambient Air Quality Standards | Tennessee | 10/19/2009 | 3/6/2013, 78 FR 14450 | With the exception of section 110(a)(2)(D)(i)(I) concerning interstate transport; the portions of sections 110(a)(2)(C), prong 3 of 110(a)(2)(D)(i), and 110(a)(2)(J) related to PSD , which are being conditionally approved; and section 110(a)(2)(E)(ii) as it relates to section 128(a)(1), which is being conditionally approved. |
| MVEB Update for the 1-hour Ozone Maintenance Plan for Knox County, Tennessee | Knox County, TN | 12/13/2012 | 2/20/2013, 78 FR 11754 | |
| 110(a)(1) and (2) Infrastructure Requirements for the 2008 Lead National Ambient Air Quality Standards | Tennessee | 10/19/2009 | 6/18/2013, 78 FR 36440 | With the exception of section 110(a)(2)(D)(i)(I) concerning interstate transport; the portions of sections 110(a)(2)(C), prong 3 of 110(a)(2)(D)(i), and 110(a)(2)(J) related to PSD, which are being conditionally approved; and section 110(a)(2)(E)(ii) as it relates to section 128(a)(1), which is being conditionally approved. |
| 110(a)(1) and (2) Infrastructure Requirements for the 2008 Lead National Ambient Air Quality Standards | Tennessee | 10/19/2009 | 8/12/2013, 78 FR 48806 | This approval is for sections 110(a)(2)(C), prong 3 of 110(a)(2)(D)(i), and 110(a)(2)(J) only. |
| Bristol, Tennessee Lead 2010 Base Year Emissions Inventory | Bristol | 4/11/2013 | 1/9/2014, 79 FR 1593 | |
| 110(a)(1) and (2) Infrastructure Requirements for 1997 Fine Particulate Matter National Ambient Air Quality Standards | Tennessee | 12/14/2007 | 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 | Tennessee | 10/19/2009 | 5/7/2014, 79 FR 26143 | Addressing prong 4 of section 110(a)(2)(D)(i) only. |
| Knoxville; 2006 24-hour Fine Particulate Matter 2008 Base Year Emissions Inventory | Anderson, Blount, Knox, and Loudon Counties, and the portion of Roane County that falls within the census block that includes the Tennessee Valley Authority's Kingston Fossil Plant | 10/9/2013 | 6/10/2014, 79 FR 33097 | |
| 110(a)(1) and (2) Infrastructure Requirements for the 2010 NO2 NAAQS | Tennessee | 3/13/2014 | 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. |
| 2008 8-hour Ozone Maintenance Plan for the Knoxville Area | Blount County, Knox County, and a portion of Anderson County | 11/14/2014 | 7/13/2015, 80 FR 39970 | |
| 2008 8-hour Ozone Emissions Inventory for the Knoxville Area | Blount County, Knox County, and a portion of Anderson County | 11/14/2014 | 7/13/2015, 80 FR 39970 | |
| RACM analysis for the Tennessee portion of the Chattanooga Area for the 1997 PM2.5 NAAQS | Hamilton County | 10/15/2009 | 11/4/2015, 80 FR 68253 | |
| 1997 Annual PM2.5 Maintenance Plan for the Tennessee portion of the Chattanooga TN-GA-AL Area | Hamilton County | 11/13/2014 | 11/4/2015, 80 FR 68253 | |
| 110(a)(2)(D)(i)(I) Interstate Transport Requirements for the 2008 8-hour Ozone NAAQS | 10/19/2009 | 3/6/2013, 78 FR 14450 | ||
| Revised 8-Hour Ozone Maintenance plan for the Shelby County, Tennessee Area | Memphis, Shelby County | 5/14/2014 | 4/29/2016, 81 FR 25605 | Revises the maintenance plan approved by EPA on 1/4/10 to include a revised emissions inventory, revised MVEBs, and an emissions reduction measure to offset the termination of the City of Memphis I/M program. |
| 2008 8-hour Ozone Maintenance Plan for the Memphis TN-MS-AR Area | Shelby County | 1/13/2016 | 6/23/2016, 81 FR 40816 | |
| 2008 8-hour Ozone Emissions Inventory for the Memphis TN-MS-AR Area | Shelby County | 1/13/2016 | 6/23/2016, 81 FR 40816 | |
| 2008 Lead Maintenance Plan for the Bristol Area | Bristol Area | 7/10/2015 | 7/7/2016, 81 FR 44210 | |
| 110 (a)(1) and (2) Infrastructure Requirements for the 2010 1-hour SO2 NAAQS | Tennessee | 3/13/2014 | 11/28/2016, 81 FR 85410 | With the exception of interstate transport requirements of section 110(a)(2)(D)(i)(I) and (II) (prongs 1, 2, and 4). |
| April 2013 Regional Haze Progress Report | Tennessee | 4/19/2013 | 12/21/2016, 81 FR 93622 | |
| 110(a)(1) and (2) Infrastructure Requirements for the 2010 1-hour NO2 NAAQS | Tennessee | 3/13/2014 | 1/12/2017, 82 FR 3639 | With the exception of sections: 110(a)(2)(C) and (J) concerning PSD permitting requirements and; 110(a)(2)(D)(i) (prongs 1 through 4) concerning interstate transport requirements. |
| 1997 8-hour ozone maintenance plan update for the Middle Tennessee Area and RVP standard | Davidson, Rutherford, Sumner, Williamson, and Wilson Counties | 11/21/2016 | 5/1/2017, 82 FR 20260 | |
| 110(a)(1) and (2) Infrastructure Requirements for the 2012 Annual PM2.5 NAAQS | Tennessee | 11/19/2015 | 5/10/2017, 82 FR 21706 | With the exception of interstate transport requirements of section 110(a)(2)(D)(i)(I) and (II) (prongs 1, 2 and 4). |
| Non-interference Demonstration for Federal Low-Reid Vapor Pressure Requirement in Shelby County | Shelby County | 4/12/2016 | 7/7/2017, 82 FR 31462 | |
| 1997 Annual PM2.5 Maintenance Plan for the Knoxville Area | Anderson, Blount, Knox, and Loudon Counties and a portion of Roane County (the area described by U.S. Census 2000 block group identifier 47-145-0307-2.) | 12/20/2016 | 8/29/2017, 82 FR 40953 | |
| RACM determination for the Knoxville Area for the 1997 Annual PM2.5 NAAQS | Anderson, Blount, Knox, and Loudon Counties and a portion of Roane County (the area described by U.S. Census 2000 block group identifier 47-145-0307-2.) | 12/20/2016 | 8/29/2017, 82 FR 40953 | |
| 2006 24-hour PM2.5 Maintenance Plan for the Knoxville-Sevierville-La Follette Area | Anderson, Blount, Knox, and Loudon Counties and a portion of Roane County (the area described by U.S. Census 2000 block group identifier 47-145-0307-2.) | 12/20/2016 | 8/28/2017, 82 FR 40718 | |
| RACM determination for the Knoxville-Sevierville-La Follette Area for the 2006 24-hour PM2.5 NAAQS | Anderson, Blount, Knox, and Loudon Counties and a portion of Roane County (the area described by U.S. Census 2000 block group identifier 47-145-0307-2.) | 12/20/2016 | 8/28/2017, 82 FR 40720 | |
| 110(a)(1) and (2) Infrastructure Requirements for the 2010 1-hour NO2 NAAQS | Tennessee | 3/13/2014 | 9/24/2018, 83 FR 48240 | Addressing prong 4 of section 110(a)(2)(D)(i)(II) only. |
| 110(a)(1) and (2) Infrastructure Requirements for the 2010 1-hour SO2 NAAQS | Tennessee | 3/13/2014 | 9/24/2018, 83 FR 48240 | Addressing prong 4 of section 110(a)(2)(D)(i)(II) only. |
| 110(a)(1) and (2) Infrastructure Requirements for the 2012 Annual PM2.5 NAAQS | Tennessee | 12/16/2015 | 9/24/2018, 83 FR 48240 | Addressing prong 4 of section 110(a)(2)(D)(i)(II) only. |
| Regional Haze Plan Revision | Tennessee | 11/22/2017 | 9/24/2018, 83 FR 48240 | |
| 110(a)(1) and (2) Infrastructure Requirements for the 2012 Annual PM2.5 NAAQS | Tennessee | 11/19/2015 | 9/25/2018, 83 FR 48391 | Addressing Prongs 1 and 2 of section 110(a)(2)(D)(i)(I) only. |
| 110(a)(1) and (2) Infrastructure Requirements for the 2010 1-hour NO2 NAAQS | Tennessee | 5/14/2018 | 5/17/2019, 84 FR 22376 | Addressing Prongs 1 and 2 of section 110(a)(2)(D)(i) only. |
| 110(a)(1) and (2) Infrastructure Requirements for the 2015 8-hour Ozone NAAQS | Tennessee | 9/13/2018 | 12/26/2019, 84 FR 70897 | With the exception of the PSD permitting requirements of 110(a)(2)(D)(i)(I) and (II) (prongs 1, 2 and 3). |
| 2010 1-Hour SO2 Emissions Inventory for the Sullivan County Area | Sullivan County | 5/10/2017 | 3/1/2021, 86 FR 11875 | Addressing the base-year emissions inventory requirements of 172(c)(3). |
| 2010 1-Hour SO2 Nonattainment New Source Review Plan for the Sullivan County Area | Sullivan County | 5/10/2017 | 3/1/2021, 86 FR 11875 | |
| 1997 8-Hour Ozone Second 10-Year Limited Maintenance Plan for the Knoxville, Tennessee Area | Jefferson, Loudon, and Sevier Counties in their entireties, the portion of Cocke County that falls within the boundary of the Great Smoky Mountains National Park, and a portion of Anderson County that excludes the area surrounding Tennessee Valley Authority (TVA) Bull Run Fossil Plant | 1/8/2020 | 7/23/2021, 86 FR 38931 | |
| 1997 8-Hour Ozone Second 10-Year Limited Maintenance Plan for the Montgomery County, Tennessee Area | Montgomery County | 6/10/2020 | 12/2/2021, 86 FR 68423 | |
| 110(a)(1) and (2) Infrastructure Requirements for the 2015 8-Hour Ozone NAAQS | Tennessee | 4/9/2021 | 10/24/2022, 87 FR 64166 | Addressing the PSD requirements of Section 110(a)(2)(C), (D)(i)(II) (Prong 3), and (J). |
| 110(a)(1) and (2) Infrastructure Requirements for the 2010 1-hour SO2 NAAQS | Tennessee | 7/31/2019 | 8/9/2023, 88 FR 53801 | Addressing prongs 1 and 2 of section 110(a)(2)(D)(i) only. |