40 C.F.R. § 52.170

Current through September 30, 2024

Section 52.170 - Identification of plan

(a)Purpose and scope. This section sets forth the applicable State Implementation Plan (SIP) for Arkansas under section 110 of the Clean Air Act, 42 U.S.C. 7410 , and 40 CFR part 51 to meet national ambient air quality standards.

(b)Incorporation by reference.

(1) Material listed in paragraphs (c) and (d) of this section with an EPA approval date prior to December 1, 2005, was approved for incorporation by reference by the Director of the Federal Register in accordance with 5 U.S.C. 552(a) and 1 CFR part 51 . Material is incorporated as it exists on the date of the approval, and notice of any change in the material will be published in the FEDERAL REGISTER. Entries in paragraphs (c) and (d) of this section with EPA approval dates after December 1, 2005, will be incorporated by reference in the next update to the SIP compilation.

(2) EPA Region 6 certifies that the rules/regulations provided by EPA in the SIP compilation at the addresses in paragraph (b)(3) of this section are an exact duplicate of the officially promulgated State rules/regulations that have been approved as part of the State implementation plan as of December 1, 2005.

(3) Copies of the materials incorporated by reference may be inspected at https://www.epa.gov/sips-ar or the Environmental Protection Agency, Region 6, 1201 Elm Street, Suite 500, Dallas, Texas 75270-2102. If you wish to obtain material from the EPA Regional Office, please call (800) 887-6063 or (214) 665-2760.

(c)EPA approved regulations.

EPA-Approved Regulations in the Arkansas SIP

State citation	Title/subject	State submittal/effective date	EPA approval date	Explanation
Rule No. 19: Regulations of the Arkansas Plan of Implementation for Air Pollution Control
Chapter 1: Title, Intent and Purpose
Rule 19.101	Title	6/22/2022	12/29/2023, 88 FR 90121
Rule 19.102	Applicability	6/22/2022	12/29/2023, 88 FR 90121
Rule 19.103	Intent and Construction	6/22/2022	12/29/2023, 88 FR 90121
Rule 19.104	Severability	6/22/2022	12/29/2023, 88 FR 90121
Rule 19.105	Incorporation by Reference	6/22/2022	12/29/2023, 88 FR 90121
Chapter 2: Definitions
Chapter 2	Definitions	6/22/2022	12/29/2023, 88 FR 90121
Chapter 3: Protection of the National Ambient Air Quality Standards
Rule 19.301	Purpose	6/22/2022	12/29/2023, 88 FR 90121
Rule 19.302	Division Responsibilities	6/22/2022	12/29/2023, 88 FR 90121
Rule 19.303	Regulated Sources Responsibilities	6/22/2022	12/29/2023, 88 FR 90121
Rule 19.304	Delegated Federal Programs	6/22/2022	12/29/2023, 88 FR 90121
Chapter 4: Minor Source Review
Rule 19.401	General Applicability	6/22/2022	12/29/2023, 88 FR 90121
Rule 19.402	Approval Criteria	6/22/2022	12/29/2023, 88 FR 90121
Rule 19.403	Owner/Operator's Responsibilities	6/22/2022	12/29/2023, 88 FR 90121
Rule 19.404	Required Information	6/22/2022	12/29/2023, 88 FR 90121
Rule 19.405	Action on Application	6/22/2022	12/29/2023, 88 FR 90121
Rule 19.406	Public Participation	6/22/2022	12/29/2023, 88 FR 90121
Rule 19.407	Permit Amendments	6/22/2022	12/29/2023, 88 FR 90121
Rule 19.408	Exemption from Permitting	6/22/2022	12/29/2023, 88 FR 90121
Rule 19.409	[Reserved]	6/22/2022	12/29/2023, 88 FR 90121
Rule 19.410	Permit Revocation and Cancellation	6/22/2022	12/29/2023, 88 FR 90121
Rule 19.411	General Permits	6/22/2022	12/29/2023, 88 FR 90121
Rule 19.412	Dispersion Modeling	6/22/2022	12/29/2023, 88 FR 90121
Rule 19.413	Confidentiality	6/22/2022	12/29/2023, 88 FR 90121
Rule 19.414	Operational Flexibility-Applicant's Duty to Apply for Alternative Scenarios	6/22/2022	12/29/2023, 88 FR 90121
Rule 19.415	Changes Resulting in No Emissions Increases	6/22/2022	12/29/2023, 88 FR 90121
Rule 19.416	Permit Flexibility	6/22/2022	12/29/2023, 88 FR 90121
Rule 19.417	Registration	6/22/2022	12/29/2023, 88 FR 90121
Chapter 5: General Emission Limitations Applicability to Equipment
Rule 19.501	Purpose	6/22/2022	12/29/2023, 88 FR 90121
Rule 19.502	General Rules	6/22/2022	12/29/2023, 88 FR 90121
Rule 19.503	Visible Emission Rules	6/22/2022	12/29/2023, 88 FR 90121
Rule 19.504	Stack Height/Dispersion Rules	6/22/2022	12/29/2023, 88 FR 90121
Rule 19.505	Revised Emissions Limitation	6/22/2022	12/29/2023, 88 FR 90121
Chapter 6: Upset and Emergency Conditions
Rule 19.601	Upset Conditions	6/22/2022	12/29/2023, 88 FR 90121
Rule 19.602	Emergency Conditions	6/22/2022	12/29/2023, 88 FR 90121
Chapter 7: Sampling, Monitoring, and Reporting Requirements
Rule 19.701	Purpose	6/22/2022	12/29/2023, 88 FR 90121
Rule 19.702	Air Emissions Sampling	6/22/2022	12/29/2023, 88 FR 90121
Rule 19.703	Continuous Emissions Monitoring	6/22/2022	12/29/2023, 88 FR 90121
Rule 19.704	Notice of Completion	6/22/2022	12/29/2023, 88 FR 90121
Rule 19.705	Record Keeping and Reporting Requirements	6/22/2022	12/29/2023, 88 FR 90121
Rule 19.706	Public Availability of Emissions Data	6/22/2022	12/29/2023, 88 FR 90121
Chapter 9: Prevention of Significant Deterioration
Rule 19.901	Title	6/22/2022	12/29/2023, 88 FR 90121
Rule 19.902	Purposes	6/22/2022	12/29/2023, 88 FR 90121
Rule 19.903	Definitions	6/22/2022	12/29/2023, 88 FR 90121
Rule 19.904	Adoption of Rules	6/22/2022	12/29/2023, 88 FR 90121
Chapter 10: Rules for the Control of Volatile Organic Compounds in Pulaski County
Rule 19.1001	Title	6/22/2022	12/29/2023, 88 FR 90121
Rule 19.1002	Purpose	6/22/2022	12/29/2023, 88 FR 90121
Rule 19.1003	Definitions	6/22/2022	12/29/2023, 88 FR 90121
Rule 19.1004	[Reserved]	6/22/2022	12/29/2023, 88 FR 90121
Rule 19.1005	Provisions for Specific Processes	6/22/2022	12/29/2023, 88 FR 90121
Rule 19.1006	[Reserved]	6/22/2022	12/29/2023, 88 FR 90121
Chapter 11: Major Source Permitting Procedures
Chapter 11	Major Source Permitting Procedures	6/22/2022	12/29/2023, 88 FR 90121
Chapter 13: Stage 1 Vapor Recovery
Rule 19.1301	Purpose	6/22/2022	12/29/2023, 88 FR 90121
Rule 19.1302	Applicability	6/22/2022	12/29/2023, 88 FR 90121
Rule 19.1303	Definitions	6/22/2022	12/29/2023, 88 FR 90121
Rule 19.1304	Exemptions	6/22/2022	12/29/2023, 88 FR 90121
Rule 19.1305	Prohibited Activities	6/22/2022	12/29/2023, 88 FR 90121
Rule 19.1306	Record Keeping	6/22/2022	12/29/2023, 88 FR 90121
Rule 19.1307	Inspections	6/22/2022	12/29/2023, 88 FR 90121
Rule 19.1308	Vapor Recovery Systems	6/22/2022	12/29/2023, 88 FR 90121
Rule 19.1309	Gasoline Delivery Vessels	6/22/2022	12/29/2023, 88 FR 90121
Rule 19.1310	Owner/Operator Responsibility	6/22/2022	12/29/2023, 88 FR 90121
Rule 19.1311	Test Methods	6/22/2022	12/29/2023, 88 FR 90121
Rule 19.1312	Effective Date	6/22/2022	12/29/2023, 88 FR 90121
Chapter 14: [RESERVED]
Chapter 15: Best Available Retrofit Technology
Rule 19.1501	Purpose	6/22/2022	12/29/2023, 88 FR 90121
Rule 19.1502	Definitions	6/22/2022	12/29/2023, 88 FR 90121
Rule 19.1503	[Reserved]	6/22/2022	12/29/2023, 88 FR 90121
Rule 19.1504	[Reserved]	6/22/2022	12/29/2023, 88 FR 90121
Rule 19.1505	Best Available Retrofit Technology Requirements	6/22/2022	12/29/2023, 88 FR 90121
Rule 19.1506	Compliance Provisions	6/22/2022	12/29/2023, 88 FR 90121
Rule 19.1507	[Reserved]	6/22/2022	12/29/2023, 88 FR 90121
Chapter 18: Effective Date
Rule 19.1801	Effective Date	6/22/2022	12/29/2023, 88 FR 90121
Appendix A: Insignificant Activities List
Appendix A	Insignificant Activities List	6/22/2022	12/29/2023, 88 FR 90121
Appendix B: National Ambient Air Quality Standards List
Appendix B	National Ambient Air Quality Standards List	6/22/2022	12/29/2023, 88 FR 90121
Regulation 26: Regulations of the Arkansas Operating Permit Program
Chapter 3: Requirements for Permit Applicability
Reg. 26.301	Requirement for a permit	7/26/2010	8/23/2019, 84 FR 44235
Reg. 26.302	Sources subject to permitting	3/24/2017	8/23/2019, 84 FR 44235
Chapter 4: Applications for Permits
Reg. 26.401	Duty to apply	3/24/2017	8/23/2019, 84 FR 44235
Reg. 26.402	Standard application form and required information	3/24/2017	8/23/2019, 84 FR 44235
Reg. 26.407	Complete application	3/24/2017	8/23/2019, 84 FR 44235
Reg. 26.409	Applicant's duty to supplement correct application	7/26/2010	8/23/2019, 84 FR 44235
Reg. 26.410	Certification by responsible official	7/26/2010	8/23/2019, 84 FR 44235
Chapter 5: Action on Application
Reg. 26.501	Action on part 70 permit applications	7/26/2010	8/23/2019, 84 FR 44235
Reg. 26.502	Final action on permit application	3/24/2017	8/23/2019, 84 FR 44235
Chapter 6: Permit Review by the Public, Affected States, and EPA
Reg. 26.601	Applicability	7/26/2010	8/23/2019, 84 FR 44235
Reg. 26.602	Public participation	3/24/2017	8/23/2019, 84 FR 44235
Reg. 26.603	Transmission of permit information to the Administrator	3/24/2017	8/23/2019, 84 FR 44235
Reg. 26.604	Review of draft permit by affected States	3/24/2017	8/23/2019, 84 FR 44235
Regulation No. 31: Nonattainment New Source Review Requirements
Chapter 1: Title, Intent, and Purpose
Reg. 31.101	Title	7/3/2006	4/12/2007, 72 FR 18394
Reg. 31.102	Applicability	7/3/2006	4/12/2007, 72 FR 18394
Reg. 31.103	Severability	7/3/2006	4/12/2007, 72 FR 18394
Chapter 2: Definitions
Chapter 2	Definitions	7/3/2006	4/12/2007, 72 FR 18394
Chapter 3: Preconstruction review
Reg. 31.301	Requirement for a Permit	7/3/2006	4/12/2007, 72 FR 18394
Reg. 31.302	Required Information	7/3/2006	4/12/2007, 72 FR 18394
Reg. 31.303	Approval Criteria	7/3/2006	4/12/2007, 72 FR 18394
Reg. 31.304	Offsets	7/3/2006	4/12/2007, 72 FR 18394
Reg. 31.305	Zones Targeted for Economic Development	7/3/2006	4/12/2007, 72 FR 18394
Reg. 31.306	Control Technology Information	7/3/2006	4/12/2007, 72 FR 18394
Reg. 31.307	Approval to Construct	7/3/2006	4/12/2007, 72 FR 18394
Reg. 31.308	Applicability of Nonattainment Review	7/3/2006	4/12/2007, 72 FR 18394
Reg. 31.309	Applicability of Other Regulations	7/3/2006	4/12/2007, 72 FR 18394
Chapter 4: Applicability Tests
Reg. 31.401	Actual-to-Projected-Actual Applicability Test	7/3/2006	4/12/2007, 72 FR 18394
Reg. 31.402	Actual-to-Potential Test	7/3/2006	4/12/2007, 72 FR 18394
Reg. 31.403	[Reserved]	7/3/2006	4/12/2007, 72 FR 18394
Reg. 31.404	[Reserved]	7/3/2006	4/12/2007, 72 FR 18394
Reg. 31.405	Emission Baseline Credits	7/3/2006	4/12/2007, 72 FR 18394
Reg. 31.406	Relaxation of Limits	7/3/2006	4/12/2007, 72 FR 18394
Reg. 31.407	Modifications to Existing Units	7/3/2006	4/12/2007, 72 FR 18394
Reg. 31.408	Public Availability of Information	7/3/2006	4/12/2007, 72 FR 18394
Reg. 31.409	Applicability of Nitrogen Oxides	7/3/2006	4/12/2007, 72 FR 18394
Reg. 31.410	Offset Requirements	7/3/2006	4/12/2007, 72 FR 18394
Reg. 31.411	PM₁₀ Precursors	7/3/2006	4/12/2007, 72 FR 18394
Chapter 5: [Reserved]
Chapter 6: [Reserved]
Chapter 7: [Reserved]
Chapter 8: Actual PALS
Reg. 31.801	Applicability	7/3/2006	4/12/2007, 72 FR 18394
Reg. 31.802	Definitions	7/3/2006	4/12/2007, 72 FR 18394
Reg. 31.803	Permit Application Requirements	7/3/2006	4/12/2007, 72 FR 18394
Reg. 31.804	General Requirements for Establishing PALs	7/3/2006	4/12/2007, 72 FR 18394
Reg. 31.805	Public Participation Requirement for PALs	7/3/2006	4/12/2007, 72 FR 18394
Reg. 31.806	Setting the 10-year Actuals PAL Level	7/3/2006	4/12/2007, 72 FR 18394
Reg. 31.807	Contents of the PAL Permit	7/3/2006	4/12/2007, 72 FR 18394
Reg. 31.808	Reopening of the PAL Permit	7/3/2006	4/12/2007, 72 FR 18394
Reg. 31.809	PAL Effective Period	7/3/2006	4/12/2007, 72 FR 18394
Reg. 31.810	Expiration of a PAL	7/3/2006	4/12/2007, 72 FR 18394
Reg. 31.811	Renewal of a PAL	7/3/2006	4/12/2007, 72 FR 18394
Reg. 31.812	Increasing a PAL During the PAL Effective Period	7/3/2006	4/12/2007, 72 FR 18394
Reg. 31.813	Monitoring Requirements for PALs	7/3/2006	4/12/2007, 72 FR 18394
Reg. 31.814	Recordkeeping Requirements	7/3/2006	4/12/2007, 72 FR 18394
Reg. 31.815	Reporting and Notification Requirements	7/3/2006	4/12/2007, 72 FR 18394
Reg. 31.816	Transition Requirements	7/3/2006	4/12/2007, 72 FR 18394
Chapter 9: Effective Date
Reg. 31.901	Effective Date	7/3/2006	4/12/2007, 72 FR 18394
Regulation No. 9: Fee Regulation
Chapter 1	Title	7/9/2012	4/30/2015, 80 FR 24216
Chapter 2	Definitions	7/9/2012	4/30/2015, 80 FR 24216	The following definitions do not relate to the air program and are not being approved into the SIP: "Category", "Certificate", "Confined Animal Operation", "Discretionary Major Facility", "Evaluation", "Laboratory", "Major Municipal Facility", "Non-Municipal Major Facility", "Parameter", "Program".
Chapter 3	Permit Fee Payment	7/9/2012	4/30/2015, 80 FR 24216
Chapter 5	Air Permit Fees	7/9/2012	4/30/2015, 80 FR 24216
Chapter 9	Administrative Procedures	7/9/2012	4/30/2015, 80 FR 24216

(d)EPA-approved State source-specific requirements.

EPA-Approved Arkansas Source-Specific Requirements

Name of source	Permit or Order No.	State approval/ effective date	EPA approval date	Comments
Arkansas Electric Cooperative Corporation Carl E. Bailey Generating Station	Administrative Order LIS No. 18-071	8/7/2018	9/27/2019, 84 FR 51033	Unit 1.
Arkansas Electric Cooperative Corporation John L. McClellan Generating Station	Administrative Order LIS No. 18-071	8/7/2018	9/27/2019, 84 FR 51033	Unit 1.
Southwestern Electric Power Company Flint Creek Power Plant	Administrative Order LIS No. 18-072	8/7/2018	9/27/2019, 84 FR 51033	Unit 1.
Entergy Arkansas, Inc. Lake Catherine Plant	Administrative Order LIS No. 18-073	8/7/2018	9/27/2019, 84 FR 51033	Unit 4.
Entergy Arkansas, Inc. White Bluff Plant	Administrative Order LIS No. 18-073	8/7/2018	9/27/2019, 84 FR 51033	Units 1, 2, and Auxiliary Boiler.
Entergy Arkansas, Inc. Independence Plant	Administrative Order LIS No. 18-073	8/7/2018	9/27/2019, 84 FR 51033	Units 1 and 2.
Domtar Ashdown Mill	Permit #0287-AOP-R22	8/1/2019	3/22/2021, 86 FR 15104	Approval of plantwide conditions 32 to 43 of section VI from the permit, addressing emission limits for SO₂, NO_X, and PM₁₀ and conditions for implementing the BART alternative for Power Boilers No. 1 and 2.

(e)EPA-approved nonregulatory provisions and quasi-regulatory measures.

EPA-Approved Statutes in the Arkansas SIP

State citation	Title/subject	State submittal/ effective date	EPA approval date	Explanation
Arkansas Water and Air Pollution Control Act-Part I
82.1901	Title of Act	1/28/1972	5/31/1972, 37 FR 10841	Ref 52.200(a) & (b).
82.1902	Definitions	1/28/1972	5/31/1972, 37 FR 10841	Ref 52.200(a) & (b).
82.1903	Pollution Control Commission	1/28/1972	5/31/1972, 37 FR 10841	Ref 52.200(a) & (b).
82.1904	Powers and Duties of Commission	1/28/1972	5/31/1972, 37 FR 10841	Ref 52.200(a) & (b).
82.1905	Persons Operating Disposal System-Furnishing Information and Permitting Examinations and Surveys	1/28/1972	5/31/1972, 37 FR 10841	Ref 52.200(a) & (b).
82.1906	Hearing Before Commission or Member-Appeal Procedure	1/28/1972	5/31/1972, 37 FR 10841	Ref 52.200(a) & (b).
82.1907	Co-operation with Agency of Another State or United States	1/28/1972	5/31/1972, 37 FR 10841	Ref 52.200(a) & (b).
82.1908	Actions Declared Public Nuisance-Permit to Construct, Make Changes in or Operate Disposal System-Submission of Plans	1/28/1972	5/31/1972, 37 FR 10841	Ref 52.200(a) & (b).
82.1909	Violation of Act a Misdemeanor-Pollution a Nuisance-Abatement	1/28/1972	5/31/1972, 37 FR 10841	Ref 52.200(a) & (b).
Arkansas Environmental Permit Fees Act (Act 817 of 1983)
82-1916 thru 82-1921	Permit Fees Act	12/16/1985	11/12/1986, 51 FR 40975	Ref 522.200(c)(24).
Arkansas Water and Air Pollution Control Act-Part II
82-1931	Air Pollution-State Policy	1/28/1972	5/31/1972, 37 FR 10841	Ref 52.200(a) & (b).
82-1932	Purpose of Act	1/28/1972	5/31/1972, 37 FR 10841	Ref 52.200(a) & (b).
82-1933	Definitions	1/28/1972	5/31/1972, 37 FR 10841	Ref 52.200(a) & (b).
82-1934	Exemptions	1/28/1972	5/31/1972, 37 FR 10841	Ref 52.200(a) & (b).
82-1935	Powers of Commission	1/28/1972	5/31/1972, 37 FR 10841	Ref 52.200(a) & (b).
82-1936	Factors in Exercise of Commission Powers	1/28/1972	5/31/1972, 37 FR 10841	Ref 52.200(a) & (b).
82-1937	Industrial Secrets Confidential-Revealing a Misdemeanor	11/25/1985	8/4/1986, 51 FR 27840	Ref 52.200(c)(23).
82-1938	Unlawful Acts	1/28/1972	5/31/1972, 37 FR 10841	Ref 52.200(a) & (b).
82-1939	Variance from Regulations	1/28/1972	5/31/1972, 37 FR 10841	Ref 52.200(a) & (b).
82-1940	Application of Water Pollution Provisions	1/28/1972	5/31/1972, 37 FR 10841	Ref 52.200(a) & (b).
82-1941	Political Subdivision Forbidden to Legislate on Air Pollution	1/28/1972	5/31/1972, 37 FR 10841	Ref 52.200(a) & (b).
82-1942	Radiation Control Law Not Amended or Repealed-No Authority to Commission Over Employer-Employee Relationships	1/28/1972	5/31/1972, 37 FR 10841	Ref 52.200(a) & (b).
82-1943	Private Rights Unchanged	1/28/1972	5/31/1972, 37 FR 10841	Ref 52.200(a) & (b).
Small Business Assistance Program Act (Act 251 of 1993)
Act 251	SBAP Act	2/26/1993	3/8/1995, 60 FR 12691	Ref 52.200(c)(31).

EPA-Approved Control Measures in the Arkansas SIP

Control measures	Applicable geographic or nonattainment area	State submittal/ effective date	EPA approval date	Explanation
Air Quality Surveillance	Statewide	4/24/1980	8/6/1981, 46 FR 40005	Ref 52.200(c)(6) & (20).
Lead SIP	Statewide	12/10/1979	4/16/1982, 47 FR 16328	Ref 52.200(c)(17).
Protection of Visibility in Mandatory Class I Federal Areas	Statewide	6/12/1985	2/10/1986, 51 FR 4910	Ref 52.200(c)(22).
Part II of the Visibility Protection Plan	Statewide	10/9/1987	7/21/1988, 53 FR 27514	Ref 52.200(c)(25).
Good Engineering Practice Stack Height Regulations	Statewide	6/1/1987	2/23/1989, 54 FR 7764	Ref 52.200(c)(26).
Small Business Stationary Source Technical and Environmental Compliance Assistance Program	Statewide	11/6/1992	3/8/1995, 60 FR 12691	Ref 52.200(c)(31).

EPA-Approved Non-Regulatory Provisions and Quasi-Regulatory Measures in the Arkansas SIP

Name of SIP provision	Applicable geographic or nonattainment area	State submittal/ effective date	EPA approval date	Explanation
Emissions Inventory for Crittenden County	Crittenden County	6/22/2007	1/15/2009, 74 FR 2383
8-Hour Ozone Maintenance plan for the Crittenden County, Arkansas Area	Crittenden, Shelby County	2/26/2009	3/24/2010, 75 FR 14077
Interstate Transport for the 1997 ozone and PM_2.5 NAAQS (Noninterference with measures required to protect visibility in any other State)	Statewide	3/28/2008	3/12/2012, 77 FR 14604	Noninterference with measures required to protect visibility in any other State partially approved 3/12/2012.
Regional Haze SIP	Statewide	9/23/2008, 8/3/2010	3/12/2012, 77 FR 14604	The following portions are partially approved and partially disapproved:
(a) Identification of affected Class I areas				(a) Identification of best available retrofit technology (BART) eligible sources and subject to BART sources;
(b) Determination of baseline and natural visibility conditions				(b) requirements for best available retrofit technology (BART);
(c) Determination of the Uniform Rate of Progress				(c) the Arkansas Regional Haze Rule; and
(d) Reasonable progress goal consultation and long term strategy consultation				(d) Long Term Strategy. (See § 52.173(a) ).
(e) Coordination regional haze and reasonably attributable visibility impairment
(f) Monitoring Strategy and other implementation requirements
(g) Commitment to submit periodic Regional Haze SIP revisions and periodic progress reports describing progress towards the reasonable progress goals
(h) Commitment to make a determination of the adequacy of the existing SIP at the time a progress report is submitted
(i) Coordination with States and Federal Land Managers
(j) The following best available retrofit technology (BART) determinations: PM BART determination for the AEP Flint Creek Plant Boiler No. 1; SO₂ and PM BART determinations for the natural gas firing scenario for the Entergy Lake Catherine Plant Unit 4; PM BART determinations for both the bituminous and sub-bituminous coal firing scenarios for the Entergy White Bluff Plant Units 1 and 2; and PM BART determination for the Domtar Ashdown Mill Power Boiler No. 1
Infrastructure for the 1997 Ozone NAAQS	Statewide	12/17/2007 3/28/2008	8/20/2012, 77 FR 50033	Approval for CAA elements 110(a)(2)(A), (B), (E), (F), (G), (H), (K), (L), and (M). Approval for CAA elements 110(a)(2)(C), (D)(i)(II) (interfere with measures in any other state to prevent significant deterioration of air quality), (D)(ii), and (J) for the 1997 ozone NAAQS, except as it relates to Greenhouse Gas (GHG) emissions. The GHG PSD deficiency was addressed on April 2, 2013 (78 FR 19596).
Infrastructure for the 1997 and 2006 PM_2.5 NAAQS	Statewide	3/28/2008, 9/16/2009, 12/1/2014	3/4/2015, 80 FR 11573	Approval for CAA elements 110(a)(2)(A), (B), (E), (F), (G), (H), (K), (L), and (M) on 8/20/2012, 77 FR 50033. Approval for PSD elements (C), (D)(i)(II) (interfere with measures in any other state to prevent significant deterioration of air quality), D(ii) and (J) on March 4, 2015 (80 FR 11573)
Interstate transport for the 1997 ozone NAAQS (Noninterference with measures required to prevent significant deterioration of air quality in any other State)	Statewide	4/5/2011	8/20/2012, 77 FR 50033	Approved except as it relates to GHGs. The GHG PSD deficiency was addressed on April 2, 2013 (78 FR 19596).
Interstate transport for the 1997 and 2006 PM_2.5 NAAQS (contribute to nonattainment or interfere with maintenance)	Statewide	12/17/2007 9/16/2009	8/29/2013, 78 FR 53269
Crittenden County Base Year Emission Inventory for the 2008 Ozone Standard	Crittenden County	8/28/2015	1/13/2016, 81 FR 1884
2008 8-hour ozone Redesignation Request, Maintenance Plan, and Clarification Letter for the Crittenden County portion of Memphis, TN-AR-MS Nonattainment Area	Crittenden County portion of Memphis, TN-AR-MS Nonattainment Area	12/10/2015	4/25/2016, 81 FR 24030
Arkansas Regional Haze NO_X SIP Revision	Statewide	10/31/2017	2/12/2018, 83 FR 5927	Regional Haze SIP submittal addressing NO_X BART requirements for Arkansas EGUs and reasonable progress requirements for NO_X for the first implementation period.
Infrastructure for the 2006 PM_2.5 NAAQS	Statewide	3/24/2017	2/14/2018, 83 FR 6470	Approval for 110(a)(2)(D)(ii).
Infrastructure for the 2008 Pb NAAQS	Statewide	3/24/2017	2/14/2018, 83 FR 6470	Approval for 110(a)(2)(A), (B), (C), (D), (E), (F), (G), (H), (J), (K), (L) and (M).
Infrastructure for the 2008 O₃ NAAQS	Statewide	3/24/2017	2/14/2018, 83 FR 6470	Approval for 110(a)(2)(A), (B), (C), (D)(i) (portions pertaining and PSD), (D)(ii), (E), (F), (G), (H), (J), (K), (L) and (M).
Infrastructure for the 2010 NO₂ NAAQS	Statewide	3/24/2017	2/14/2018, 83 FR 6470	Approval for 110(a)(2)(A), (B), (C), (D)(i)(portion pertaining to nonattainment interference with maintenance and PSD), (D)(ii), (E), (F), (G), (H), (J), (K), (L) and (M).
Infrastructure for the 2010 SO₂ NAAQS	Statewide	3/24/2017	2/14/2018, 83 FR 6470	Approval for 110(a)(2)(A), (B), (C), (D)(i) (portion pertaining to PSD), (D)(ii), (E), (F), (G), (H), (J), (K), (L) and (M). Approval for 110(a)(2)(D)(i)(I) on 10/18/2019.
Infrastructure for the 2012 PM_2.5 NAAQS	Statewide	3/24/2017	2/14/2018, 83 FR 6470	Approval for 110(a)(2)(A), (B), (C), (D)(i) (portion pertaining to PSD), (D)(ii), (E), (F), (G), (H), (J), (K), (L) and (M). Approval for 110(a)(2)(D)(i)(I) (significant contribution to nonattainment or interfere with maintenance in any other state) on 9/20/2018, 83 FR 47569.
Arkansas Regional Haze Phase II SIP Revision	Statewide	8/8/2018	9/27/2019, 84 FR 51033	Regional Haze SIP revision addressing SO₂ and PM BART requirements for Arkansas EGUs, NO_X BART requirement for the White Bluff Auxiliary Boiler, reasonable progress requirements for SO₂ and PM for the first implementation period, and the long-term strategy requirements. We are approving a portion of this SIP revision. There are two aspects of this SIP revision we are not taking action on at this time: (1) The interstate visibility transport requirements under section 110(a)(2)(D)(i)(II); and (2) the long-term strategy is approved with respect to sources other than the Domtar Ashdown Mill.
Arkansas SIP Review for the Five-Year Regional Haze Progress Report	Statewide	6/2/2015	10/1/2019, 84 FR 51986
Infrastructure for the 2015 O₃ NAAQS	Statewide	9/27/2019	2/12/2021, 86 FR 9290	Approval for 110(a)(2)(A), (B), (C), (D)(i) (portion pertaining to PSD), (D)(ii), (E), (F), (G), (H), (J), (K), (L) and (M).
Arkansas Regional Haze Phase III SIP Revision	Statewide	8/13/2019	3/22/2021, 86 FR 15104	Approval of regional haze SIP revision pertaining to the Domtar Ashdown mill that addresses SO₂, NO_X, and PM₁₀ BART alternative requirements under 40 CFR 51.308(e)(2) ; reasonable progress components under 40 CFR 51.308(d)(1) ; and long-term strategy components under 40 CFR 51.308(d)(3) for this facility.
Arkansas 2015 O₃ NAAQS Interstate Transport SIP Revision	Statewide	10/4/2019	3/22/2021, 86 FR 15104	Approval of visibility transport portion of this interstate transport SIP revision that addresses CAA section 110(a)(2)(D)(i)(II) for the following NAAQS: 2006 24-hour PM_2.5 NAAQS; the 2012 annual PM_2.5 NAAQS; the 2008 and 2015 eight-hour O₃ NAAQS; the 2010 one-hour NO₂ NAAQS; and the 2010 one-hour SO₂ NAAQS.
Arkansas Regional Haze SO₂ and PM SIP Revision	Statewide	8/8/2018	3/22/2021, 86 FR 15104	Approval of visibility transport portion of this regional haze SIP revision, as supplemented by the Arkansas 2015 O₃ NAAQS Interstate Transport SIP Revision.

40 C.F.R. §52.170

63 FR 56927, Oct. 23, 1998, as amended at 65 FR 61107, Oct. 16, 2000; 66 FR 51316, Oct. 9, 2001; 71 FR 13545, Mar. 16, 2006; 72 FR 18396, Apr. 12, 2007; 72 FR 54561, Sept. 26, 2007; 74 FR 2386, Jan. 15, 2009; 75 FR 14080, Mar. 24, 2010; 77 FR 14675, 14676, Mar. 12, 2012; 77 FR 50037, Aug. 20, 2012; 78 FR 19598, Apr. 2, 2013; 78 FR 53270, Aug. 29, 2013; 80 FR 11574, Mar. 4, 2015; 80 FR 24218, Apr. 30, 2015; 80 FR 38627, July 7, 2015; 81 FR 1887, Jan. 14, 2016; 81 FR 24032, Apr. 25, 2016; 82 FR 60520, Dec. 21, 2017; 83 FR 5939, Feb. 12, 2018; 83 FR 6472, Feb. 14, 2018; 83 FR 30570, June 29, 2018; 83 FR 38966, Aug. 8, 2018; 83 FR 47571, Sept. 20, 2018; 84 FR 44228, Aug. 23, 2019; 84 FR 44236, Aug. 23, 2019; 84 FR 51053, Sept. 27, 2019; 84 FR 51988, Oct. 1, 2019; 84 FR 55865, Oct. 18, 2019; 86 FR 9293, Feb. 12, 2021; 86 FR 15131, Mar. 22, 2021; 86 FR 20290, Apr. 19, 2021; 88 FR 72688, Oct. 23, 2023; 88 FR 90123, Dec. 29, 2023

81 FR 1887, 1/14/2016; 81 FR 24032, 4/25/2016; 83 FR 5939, 3/14/2018 ; 83 FR 6472, 3/16/2018; 82 FR 60520, 3/21/2018; 83 FR 30570, 7/30/2018; 83 FR 38966, 11/6/2018; 83 FR 47571, 11/7/2018; 84 FR 44228, 8/23/2019; 84 FR 44236, 9/23/2019; 84 FR 51053, 10/28/2019; 84 FR 55865, 11/18/2019; 86 FR 9293, 2/12/2021; 86 FR 15131, 4/21/2021; 88 FR 72688, 11/22/2023; 88 FR 90123, 1/29/2024