EPA Approved Nonregulatory Provisions and Quasi-Regulatory Measures in the North Carolina 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. The following files are federally approved regulations as of October 1, 2023.

Updated as of: October 1, 2023

EPA Contact: EPA Region 4: Weston Freund (404-562-8773)

EPA-Approved North Carolina Non-Regulatory Provisions

Provision  State effective date EPA Approval Date FR Citation Explanation Link to Final Rule Regulations.gov Docket ID
Capital Area, North Carolina Interagency Transportation Conformity Memorandum of Agreement 1/1/2002 12/27/2002 67 FR 78983   67 FR 78983 NC–93; NC–101–200122a
Durham-Chapel Hill Interagency Transportation Conformity Memorandum of Agreement 1/1/2002 12/27/2002 67 FR 78983   67 FR 78983 NC–93; NC–101–200122a
Winston-Salem Interagency Transportation Conformity Memorandum of Agreement 1/1/2002 12/27/2002 67 FR 78983   67 FR 78983 NC–93; NC–101–200122a
High Point Interagency Transportation Conformity Memorandum of Agreement 1/1/2002 12/27/2002 67 FR 78983   67 FR 78983 NC–93; NC–101–200122a
Greensboro Interagency Transportation Conformity Memorandum of Agreement 1/1/2002 12/27/2002 67 FR 78983   67 FR 78983 NC–93; NC–101–200122a
Gaston, North Carolina Interagency Transportation Conformity Memorandum of Agreement 1/1/2002 12/27/2002 67 FR 78983   67 FR 78983 NC–93; NC–101–200122a
Mecklenburg-Union Interagency Transportation Conformity Memorandum of Agreement 8/7/2003 9/15/2003 68 FR 53883   68 FR 53883 NC–107–200338(a)
10 Year Maintenance Plan Update for the Raleigh/Durham Area 6/4/2004 9/20/2004 69 FR 56163   69 FR 56163 R04–OAR–2004–NC–0002–200417(a)
10 Year Maintenance Plan Update for the Greensboro/Winston-Salem/High Point Area 6/4/2004 9/20/2004 69 FR 56163   69 FR 56163 R04–OAR–2004–NC–0002–200417(a)
Attainment Demonstration of the Mountain, Unifour, Triad and Fayetteville Early Action Compact Areas 12/21/2004 8/22/2005 70 FR 48874   70 FR 48874 R04–OAR–2004–NC–0005–200513
Charlotte, Raleigh-Durham, and Winston-Salem Carbon Monoxide Second 10-Year Maintenance Plan 3/18/2005 3/24/2006 71 FR 14817   71 FR 14817 EPA–RO4–OAR–2005–NC–0002–200538(a)
8-Hour Ozone Maintenance plan for the Rocky Mount, North Carolina area (Edgecombe and Nash Counties) 6/19/2006 11/6/2006 71 FR 64891   71 FR 64891 EPA–R04–OAR–2006–0676–200622(a)
8-Hour Ozone Maintenance plan for the Raleigh-Durham-Chapel Hill, North Carolina area (Durham, Franklin, Granville, Johnston, Orange, Person and Wake Counties in their entireties, and Baldwin, Center, New Hope and Williams Townships in Chatham County) 6/7/2007 12/26/2007 72 FR 72948   72 FR 72948 EPA–R04–OAR–2007–0601–200747
1-Hour Ozone Maintenance plan revision for the Greensboro/Winston-Salem/High Point area (Davidson, Forsyth, and Guilford counties and a portion of Davie County) 2/4/2008 4/8/2008 73 FR 18963   73 FR 18963 EPA–R04–OAR–2008–0036–200801(a)
8-Hour Ozone Maintenance Plan for the Great Smoky Mountains National Park Area 7/24/2009 12/7/2009 74 FR 63995   74 FR 63995 EPA–R04–OAR–2009–0338–200908
1997 Annual PM2.5 Maintenance Plan for the Hickory, North Carolina Area (Catawba County) 12/18/2009 11/18/2011 76 FR 71452   76 FR 71452 EPA–R04–OAR–2009–1010–201158
1997 Annual PM2.5 Maintenance Plan for the Hickory, North Carolina Area—MOVES Update 12/22/2010 11/18/2011 76 FR 71452   76 FR 71452 EPA–R04–OAR–2009–1010–201158
1997 Annual PM2.5 Maintenance Plan for the Greensboro, North Carolina Area (Davidson and Guilford Counties) 12/18/2009 11/18/2011 76 FR 71455   76 FR 71455 EPA–R04–OAR–2009–1011–201159
1997 Annual PM2.5 Maintenance Plan for the Greensboro, North Carolina Area—MOVES Update 12/22/2010 11/18/2011 76 FR 71455   76 FR 71455 EPA–R04–OAR–2009–1011–201159
North Carolina 110(a)(1) and (2) Infrastructure Requirements for the 1997 8-Hour Ozone National Ambient Air Quality Standards 12/12/2007 2/6/2012 77 FR 5703   77 FR 5703 EPA–R04–OAR–2011–0352–201204
1997 8-Hour Ozone 110(a)(1) Maintenance Plan for the Triad Area 4/13/2011 1/25/2012 77 FR 3611   77 FR 3611 EPA–R04–OAR–2011–0455–201131(a)
Supplement to 110(a)(1) Maintenance Plan for the Triad Area 5/18/2011 1/25/2012 77 FR 3611   77 FR 3611 EPA–R04–OAR–2011–0455–201131(a)
North Carolina portion of bi-state Charlotte; 1997 8-Hour Ozone 2002 Base Year Emissions Inventory 11/12/2009 5/4/2012 77 FR 26441   77 FR 26441 EPA–R04–OAR–2012–0355(b
Regional Haze Plan 11/17/2007 6/27/2012 77 FR 38185   77 FR 38185 EPA–R04–OAR–2010–0219
110(a)(1) and (2) Infrastructure Requirements for 1997 Fine Particulate Matter National Ambient Air Quality Standards 4/1/2008 10/16/2012 77 FR 63234 With the exception of section 110(a)(2)(D)(i). With respect to sections 110(a)(2)(C) related to PSD requirements, 110(a)(2)(E)(ii) and 110(a)(2)(J) related to PSD requirements, EPA conditionally approved these requirements. 77 FR 63234 EPA–R04–OAR–2010–1015
110(a)(1) and (2) Infrastructure Requirements for 2006 Fine Particulate Matter National Ambient Air Quality Standards 9/21/2009 10/16/2012 77 FR 63234 With the exception of section 110(a)(2)(D)(i). With respect to sections 110(a)(2)(C) related to PSD requirements, 110(a)(2)(E)(ii) and 110(a)(2)(J) related to PSD requirements, EPA conditionally approved these requirements. 77 FR 63234 EPA–R04–OAR–2010–1015
MVEB Update for the Redesignation and Maintenance Plan for the Rocky Mount, NC Area for the 1997 8-hour Ozone Standard 2/7/2011 9/27/2012 77 FR 59335   77 FR 59335 EPA–R04–OAR–2012–0013(a)
1997 8-hour ozone reasonable further progress plan for North Carolina portion of the bi-state Charlotte Area 11/30/2009 10/12/2012 77 FR 62159   77 FR 62159 EPA–R04–OAR–2010–0019(a)
8-Hour Carbon Monoxide Limited Maintenance Plan for Charlotte, Raleigh/Durham and Winston-Salem Maintenance Area 8/2/2012 6/20/2013 78 FR 37118   78 FR 37118 EPA–R04–OAR–2012–0961
1997 8-hour ozone Maintenance Plan for the North Carolina portion of the bi-state Charlotte Area 11/2/2011 and supplemented on 03/28/2013 12/2/2013 78 FR 72036   78 FR 72036 EPA–R04–OAR–2013–0129
North Carolina Transportation Conformity Air Quality Implementation Plan 7/12/2013 12/26/2013 78 FR 78266   78 FR 78266 EPA–R04–OAR–2013–0629
Supplement Maintenance Plan for the Raleigh-Durham-Chapel Hill, NC 1997 8-hour Ozone Maintenance Area and RVP Standard 3/27/2013 1/2/2014 79 FR 47   79 FR 47 EPA–R04–OAR–2013–0563
Supplement Maintenance Plan for the Greensboro/Winston-Salem/High Point Area, NC 1997 8-hour Ozone Maintenance Area and RVP Standard 4/2/2013 1/24/2014 79 FR 4082   79 FR 4082 EPA–R04–OAR–2013–0562
110(a)(1) and (2) Infrastructure Requirements for 1997 Fine Particulate Matter National Ambient Air Quality Standards 4/1/2008 5/7/2014 79 FR 26143 Addressing prong 4 of section 110(a)(2)(D)(i) only. 79 FR 26143 EPA–R04–OAR–2012–0814
110(a)(1) and (2) Infrastructure Requirements for 2006 Fine Particulate Matter National Ambient Air Quality Standards 9/21/2009 5/7/2014 79 FR 26143 Addressing prong 4 of section 110(a)(2)(D)(i) only. 79 FR 26143 EPA–R04–OAR–2012–0814
Non-Interference Demonstration for the North Carolina Inspection and Maintenance Program 10/11/2013 2/5/2015 80 FR 6455   80 FR 6455 EPA–R04–OAR–2013–0772
110(a)(1) and (2) Infrastructure Requirements for the 2008 Lead National Ambient Air Quality Standards 6/15/2012 3/9/2015 80 FR 12343 With the exception of PSD permitting requirements for major sources of sections 110(a)(2)(C), prong 3 of D(i), and (J) and the state board requirements of 110(E)(ii). 80 FR 12343 EPA–R04–OAR–2014–0444
North Carolina portion of bi-state Charlotte Area; 2008 8-Hour Ozone Base Year Emissions Inventory 7/7/2014 4/21/2015 80 FR 22211   80 FR 22107 EPA–R04–OAR–2015–0209
North Carolina portion of bi-state Charlotte Area; 2008 8-Hour Ozone Annual Emissions Reporting (Emissions Statements) 7/7/2014 4/21/2015 80 FR 22107   80 FR 22107 EPA–R04–OAR–2015–0209
Supplement Maintenance Plan for the Charlotte Area, NC 2008 8-hour Ozone Maintenance Area and RVP Standard 4/16/2015 7/28/2015 80 FR 44868 Provides the non-interference demonstration for revising the Federal Low-Reid Vapor Pressure requirement for the Charlotte Area, NC. 80 FR 44868 EPA–R04–OAR–2015–0260
2008 8-hour ozone Maintenance Plan for the North Carolina portion of the bi-state Charlotte Area 4/16/2015 7/28/2015 80 FR 44873   80 FR 44873 EPA–R04–OAR–2015–0275
110(a)(1) and (2) Infrastructure Requirements for the 1997 8-hour Ozone NAAQS 7/27/2015 11/3/2015 80 FR 67645 Approving 110(a)(2)(E)(ii) as it relates to the Secretary of the DENR and his/her delegatee that approve permit or enforcement orders and appealed matters decided by ALJs. 80 FR 67645 EPA–R04–OAR–2015–0440
110(a)(1) and (2) Infrastructure Requirements for the 1997 Annual PM2.5 NAAQS 7/27/2015 11/3/2015 80 FR 67645 Approving 110(a)(2)(E)(ii) as it relates to the Secretary of the DENR and his/her delegatee that approve permit or enforcement orders and appealed matters decided by ALJs. 80 FR 67645 EPA–R04–OAR–2015–0440
110(a)(1) and (2) Infrastructure Requirements for the 2006 24-hour PM2.5 NAAQS 7/27/2015 11/3/2015 80 FR 67645 Approving 110(a)(2)(E)(ii) as it relates to the Secretary of the DENR and his/her delegatee that approve permit or enforcement orders and appealed matters decided by ALJs. 80 FR 67645 EPA–R04–OAR–2015–0440
110(a)(1) and (2) Infrastructure Requirements for the 2008 Lead NAAQS 7/27/2015 11/3/2015 80 FR 67646 Approving 110(a)(2)(E)(ii) as it relates to the Secretary of the DENR and his/her delegatee that approve permit or enforcement orders and appealed matters decided by ALJs. 80 FR 67645 EPA–R04–OAR–2015–0440
110(a)(1) and (2) Infrastructure Requirements for the 2008 8-hour Ozone NAAQS 7/27/2015 11/3/2015 80 FR 67645 Approving 110(a)(2)(E)(ii) as it relates to the Secretary of the DENR and his/her delegatee that approve permit or enforcement orders and appealed matters decided by ALJs. 80 FR 67645 EPA–R04–OAR–2015–0440
110(a)(1) and (2) Infrastructure Requirements for the 2010 NO2 NAAQS 7/27/2015 11/3/2015 80 FR 67645 Approving 110(a)(2)(E)(ii) as it relates to the Secretary of the DENR and his/her delegatee that approve permit or enforcement orders and appealed matters decided by ALJs. 80 FR 67645 EPA–R04–OAR–2015–0440
110(a)(1) and (2) Infrastructure Requirements for the 2010 SO2 NAAQS 7/27/2015 11/3/2015 80 FR 67645 Approving 110(a)(2)(E)(ii) as it relates to the Secretary of the DENR and his/her delegatee that approve permit or enforcement orders and appealed matters decided by ALJs. 80 FR 67645 EPA–R04–OAR–2015–0440
Chapter 7A section 754 of the North Carolina General Statues 7/27/2015 11/3/2015 80 FR 67645 Specifically, the following paragraph of 7A-754 stating “The Chief Administrative Law Judge and the administrative law judges shall comply with the Model Code of Judicial Conduct for State Administrative Law Judges, as adopted by the National Conference of Administrative Law Judges, Judicial Division, American Bar Association, (revised August 1998), as amended from time to time, except that the provisions of this section shall control as to the private practice of law in lieu of Canon 4G, and G.S. 126-13 shall control as to political activity in lieu of Canon 5.” is approved into the SIP. 80 FR 67645 EPA–R04–OAR–2015–0440
110(a)(1) and (2) Infrastructure Requirements for the 2008 8-Hour Ozone National Ambient Air Quality Standards 11/2/2012 11/5/2015 80 FR 68453 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 requirements. 80 FR 68453 EPA–R04–OAR–2014–0795
110(a)(1) and (2) Infrastructure Requirements for the 2010 1-hour SO2 NAAQS 3/18/2014 4/26/2016 81 FR 24496 With the exception of the PSD permitting requirements for major sources of sections 110(a)(2)(C) and (J), the interstate transport requirements of section 110(a)(2)(D)(i)(I) and (II) (prongs 1, 2, 3, and 4), and the state board requirements of section 110(E)(ii). 81 FR 24496 EPA–R04–OAR–2015–0150
BART Alternative Plan 10/31/2014 5/24/2016 81 FR 32652 This plan modifies the Regional Haze Plan approved with a state effective date of 11/17/2007 (see above) and converts the June 27, 2012, limited approval to a full approval. 81 FR 32652 EPA–R04–OAR–2015–0518
110(a)(1) and (2) Infrastructure Requirements for the 2008 8-Hour Ozone NAAQS 11/2/2012 6/3/2016 81 FR 35634 Addressing prong 4 of section 110(a)(2)(D)(i) only. 81 FR 35634 EPA–R04–OAR–2016–0072
110(a)(1) and (2) Infrastructure Requirements for the 2010 1-hour NO2 NAAQS 8/23/2013 6/3/2016 81 FR 35634 Addressing prong 4 of section 110(a)(2)(D)(i) only. 81 FR 35634 EPA–R04–OAR–2016–0072
110(a)(1) and (2) Infrastructure Requirements for the 2010 1-hour SO2 NAAQS 3/18/2014 6/3/2016 81 FR 35634 Addressing prong 4 of section 110(a)(2)(D)(i) only. 81 FR 35634 EPA–R04–OAR–2016–0072
110(a)(1) and (2) Infrastructure Requirements for the 2012 Annual PM2.5 NAAQS 12/4/2015 6/3/2016 81 FR 35634 Addressing prong 4 of section 110(a)(2)(D)(i) only. 81 FR 35634 EPA–R04–OAR–2016–0072
May 2013 Regional Haze Progress Report 5/31/2013 8/25/2016 81 FR 58400 Includes updated reasonable progress goals for North Carolina's Class I areas. 81 FR 58400 EPA–R04–OAR–2015–0449
110(a)(1) and (2) Infrastructure Requirements for 1997 Fine Particulate Matter NAAQS 4/1/2008 9/14/2016 81 FR 63107 Partially approve the PSD elements of sections 110(a)(2)(C), 110(a)(2)(D)(i)(II) (prong 3) and 110(a)(2)(J) and disapprove with respect to the PM2.5 increment requirements of 2010 PSD PM2.5 Rule. 81 FR 63107 EPA–R04–OAR–2015–0501
110(a)(1) and (2) Infrastructure Requirements for 2006 Fine Particulate Matter NAAQS 9/21/2009 9/14/2016 81 FR 63107 Partially approve the PSD elements of sections 110(a)(2)(C), 110(a)(2)(D)(i)(II) (prong 3) and 110(a)(2)(J) and disapprove with respect to the PM2.5 increment requirements of 2010 PSD PM2.5 Rule. 81 FR 63107 EPA–R04–OAR–2015–0501
110(a)(1) and (2) Infrastructure Requirements for the 2008 Lead NAAQS 6/15/2012 9/14/2016 81 FR 63107 Partially approve the PSD elements of sections 110(a)(2)(C), 110(a)(2)(D)(i)(II) (prong 3) and 110(a)(2)(J) and disapprove with respect to the PM2.5 increment requirements of 2010 PSD PM2.5 Rule. 81 FR 63107 EPA–R04–OAR–2015–0501
110(a)(1) and (2) Infrastructure Requirements for the 2008 8-Hour Ozone NAAQS 11/2/2012 9/14/2016 81 FR 63107 Partially approve the PSD elements of sections 110(a)(2)(C), 110(a)(2)(D)(i)(II) (prong 3) and 110(a)(2)(J) and disapprove with respect to the PM2.5 increment requirements of 2010 PSD PM2.5 Rule. 81 FR 63107 EPA–R04–OAR–2015–0501
110(a)(1) and (2) Infrastructure Requirements for the 2010 1-hour NO2 NAAQS 8/23/2013 9/14/2016 81 FR 63107 Partially approve the PSD elements of sections 110(a)(2)(C), 110(a)(2)(D)(i)(II) (prong 3) and 110(a)(2)(J) and disapprove with respect to the PM2.5 increment requirements of 2010 PSD PM2.5 Rule. 81 FR 63107 EPA–R04–OAR–2015–0501
110(a)(1) and (2) Infrastructure Requirements for the 2010 1-hour SO2 NAAQS 3/18/2014 9/14/2016 81 FR 63107 Partially approve the PSD elements of sections 110(a)(2)(C), 110(a)(2)(D)(i)(II) (prong 3) and 110(a)(2)(J) and disapprove with respect to the PM2.5 increment requirements of 2010 PSD PM2.5 Rule. 81 FR 63107 EPA–R04–OAR–2015–0501
110(a)(1) and (2) Infrastructure Requirements for the 2012 Annual PM2.5 NAAQS 12/4/2015 9/14/2016 81 FR 63107 Partially approve the PSD elements of sections 110(a)(2)(C), 110(a)(2)(D)(i)(II) (prong 3) and 110(a)(2)(J) and disapprove with respect to the PM2.5 increment requirements of 2010 PSD PM2.5 Rule. 81 FR 63107 EPA–R04–OAR–2015–0501
Good Neighbor Provisions (Section 110(a)(2)(D)(i)(I)) for the 2010 1-hour NO2 NAAQS 3/24/2016 9/22/2016 81 FR 65288   81 FR 65288 EPA–R04–OAR–2016–0209
110(a)(1) and (2) Infrastructure Requirements for the 2010 1-hour NO2 NAAQS 8/23/2013 10/14/2016 81 FR 70969 With the exception of sections: 110(a)(2)(E)(ii) concerning state boards; 110(a)(2)(C) and (J) concerning PSD permitting requirements; and 110(a)(2)(D)(i)(I) and (II) (prongs 1 through 4) concerning interstate transport requirements. 81 FR 70968 EPA–R04–OAR–2015–0362
110(a)(1) and (2) Infrastructure Requirements for the 2012 Annual PM2.5 NAAQS 12/4/2015 4/7/2017 82 FR 16924 With the exception of section 110(a)(2)(D)(i)(I) and (II) (prongs 1 through 4) and the PSD requirements of section 110(a)(2)(C) and (J). 82 FR 16924 EPA–R04–OAR–2014–0428
110(a)(1) and (2) Infrastructure Requirements for the 2008 8-Hour Ozone NAAQS 12/9/2015 10/4/2017 82 FR 46134 Addressing prongs 1 and 2 of section 110(a)(2)(D)(i) only. 82 FR 46134 EPA–R04–OAR–2017–0321
North Carolina Removal of 26 Counties from Inspection and Maintenance Program and 110(l) Non-Interference Demonstration 11/17/2017 9/25/2018 83 FR 48383   83 FR 48383 EPA–R04–OAR–2018–0020
110(a)(1) and (2) Infrastructure Requirements for 1997 Fine Particulate Matter NAAQS 4/1/2008 9/11/2018 83 FR 45827 Approved the PSD elements of sections 110(a)(2)(C), 110(a)(2)(D)(i)(II) (prong 3) and 110(a)(2)(J). 83 FR 45827 EPA–R04–OAR–2015–0501
110(a)(1) and (2) Infrastructure Requirements for 2006 Fine Particulate Matter NAAQS 9/21/2009 9/11/2018 83 FR 45827 Approved the PSD elements of sections 110(a)(2)(C), 110(a)(2)(D)(i)(II) (prong 3) and 110(a)(2)(J). 83 FR 45827 EPA–R04–OAR–2015–0501
110(a)(1) and (2) Infrastructure Requirements for the 2008 Lead NAAQS 6/15/2012 9/11/2018 83 FR 45827 Approved the PSD elements of sections 110(a)(2)(C), 110(a)(2)(D)(i)(II) (prong 3) and 110(a)(2)(J). 83 FR 45827 EPA–R04–OAR–2015–0501
110(a)(1) and (2) Infrastructure Requirements for the 2008 8-Hour Ozone NAAQS 11/2/2012 9/11/2018 83 FR 45827 Approved the PSD elements of sections 110(a)(2)(C), 110(a)(2)(D)(i)(II) (prong 3) and 110(a)(2)(J). 83 FR 45827 EPA–R04–OAR–2015–0501
110(a)(1) and (2) Infrastructure Requirements for the 2010 1-hour NO2 NAAQS 8/23/2013 9/11/2018 83 FR 45827 Approved the PSD elements of sections 110(a)(2)(C), 110(a)(2)(D)(i)(II) (prong 3) and 110(a)(2)(J). 83 FR 45827 EPA–R04–OAR–2015–0501
110(a)(1) and (2) Infrastructure Requirements for the 2010 1-hour SO2 NAAQS 3/18/2014 9/11/2018 83 FR 45827 Approved the PSD elements of sections 110(a)(2)(C), 110(a)(2)(D)(i)(II) (prong 3) and 110(a)(2)(J). 83 FR 45827 EPA–R04–OAR–2015–0501
110(a)(1) and (2) Infrastructure Requirements for the 2012 Annual PM2.5 NAAQS 12/4/2015 9/11/2018 83 FR 45827 Approved the PSD elements of sections 110(a)(2)(C), 110(a)(2)(D)(i)(II) (prong 3) and 110(a)(2)(J). 83 FR 45827 EPA–R04–OAR–2015–0501
110(a)(1) and (2) Infrastructure Requirements for the 2012 Annual PM2.5 NAAQS 12/4/2015 9/25/2018 83 FR 48387 Addressing Prongs 1 and 2 of section 110(a)(2)(D)(i)(I) only. 83 FR 48387 EPA–R04–OAR–2016–0334
2008 8-hour ozone Maintenance Plan for the North Carolina portion of the bi-state Charlotte Area 7/25/2018 9/11/2019 84 FR 47889   84 FR 47889 EPA–R04–OAR–2018–0598
110(a)(1) and (2) Infrastructure Requirements for the 2015 8-Hour Ozone NAAQS  9/27/2018 3/11/2020 85 FR 14147 With the exception of 110(a)(2)(D)(i)(l) (prongs 1 and 2) and PSD provisions related to major sources under sections 110(a)(2)(C), 110(a)(2)(D)(i)(II) (prong 3), and 110(a)(2)(J). 85 FR 14147 EPA–R04–OAR–2019–0503

Air Quality Implementation Plans

Contact Us about Air Quality Implementation Plans
Contact Us to ask a question, provide feedback, or report a problem.
Last updated on May 20, 2025