Proposed Rule2026-00258

Air Plan Approval; Ohio; Ohio Permit Rules Revisions

Primary source

Metadata and text below are from the Federal Register, a public-domain U.S. government work. Always verify the official published version before relying on it for any legal matter.

Published
January 9, 2026

Issuing agencies

Environmental Protection Agency

Abstract

The Environmental Protection Agency (EPA) is proposing to approve revisions to Ohio air permitting rules into the State Implementation Plan (SIP) under the Clean Air Act (CAA). These revisions represent changes to the air permitting rules the Ohio Environmental Protection Agency (Ohio EPA) adopted on March 1, 2023, and July 25, 2025, which became effective at the State level on March 11, 2023, and August 14, 2025, respectively. These revisions will result in consistent requirements of rules at both the State and Federal level.

Full Text

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<title>Federal Register, Volume 91 Issue 6 (Friday, January 9, 2026)</title>
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[Federal Register Volume 91, Number 6 (Friday, January 9, 2026)]
[Proposed Rules]
[Pages 937-940]
From the Federal Register Online via the Government Publishing Office [<a href="http://www.gpo.gov">www.gpo.gov</a>]
[FR Doc No: 2026-00258]


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ENVIRONMENTAL PROTECTION AGENCY

40 CFR Part 52

[EPA-R05-OAR-2025-0143; FRL-13000-01-R5]


Air Plan Approval; Ohio; Ohio Permit Rules Revisions

AGENCY: Environmental Protection Agency (EPA).

ACTION: Proposed rule.

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SUMMARY: The Environmental Protection Agency (EPA) is proposing to 
approve revisions to Ohio air permitting rules into the State 
Implementation Plan (SIP) under the Clean Air Act (CAA). These 
revisions represent changes to the air permitting rules the Ohio 
Environmental Protection Agency (Ohio EPA) adopted on March 1, 2023, 
and July 25, 2025, which became effective at the State level on March 
11, 2023, and August 14, 2025, respectively. These revisions will 
result in consistent requirements of rules at both the State and 
Federal level.

DATES: Comments must be received on or before February 9, 2026.

ADDRESSES: Submit your comments, identified by Docket ID No. EPA-R05-
OAR-2025-0143 at <a href="https://www.regulations.gov">https://www.regulations.gov</a>, or via email to 
<a href="/cdn-cgi/l/email-protection#442025292d272b6a23212a21322d213221042134256a232b32"><span class="__cf_email__" data-cfemail="0662676b6f65692861636863706f6370634663766728616970">[email&#160;protected]</span></a>. For comments submitted at <a href="http://Regulations.gov">Regulations.gov</a>, 
follow the online instructions for submitting comments. Once submitted, 
comments cannot be edited or removed from the docket. EPA may publish 
any comment received to its public docket. Do not submit to EPA's 
docket at <a href="https://www.regulations.gov">https://www.regulations.gov</a> any information you consider to 
be Confidential Business Information (CBI), Proprietary Business 
Information (PBI), or other information whose disclosure is restricted 
by statute. Multimedia submissions (audio, video, etc.) must be 
accompanied by a written comment. The written comment is considered the 
official comment and should include discussion of all points you wish 
to make. EPA will generally not consider comments or comment contents 
located outside of the primary submission (i.e., on the web, cloud, or 
other file sharing system). For additional submission methods, please 
contact the person identified in the FOR FURTHER INFORMATION CONTACT 
section. For the full EPA public comment policy, information about CBI, 
PBI, or multimedia submissions, and general guidance on making 
effective comments, please visit <a href="https://www.epa.gov/dockets/commenting-epa-dockets">https://www.epa.gov/dockets/commenting-epa-dockets</a>.

FOR FURTHER INFORMATION CONTACT: Skyler Sanderson, Air and Radiation 
Division (AR-18J), Environmental Protection Agency, Region 5, 77 West 
Jackson Boulevard, Chicago, Illinois 60604, (312) 886-4454, 
<a href="/cdn-cgi/l/email-protection#fe8d9f909a9b8c8d9190d08d9587929b8cbe9b8e9fd0999188"><span class="__cf_email__" data-cfemail="6714060903021514080949140c1e0b02152702170649000811">[email&#160;protected]</span></a>. The EPA Region 5 office is open from 8:30 
a.m. to 4:30 p.m., Monday through Friday, excluding Federal holidays.

SUPPLEMENTARY INFORMATION: Throughout this document whenever ``we,'' 
``us,'' or ``our'' is used, we mean EPA.

I. Background

    On March 19, 2025, Ohio EPA submitted revisions to rules in Ohio 
Administrative Code (OAC) chapter 3745-31 Permit-to-Install New Sources 
and Permit-to-Install and Operate Program to EPA to amend the Ohio SIP. 
The submittal includes revisions to air permitting rules which update 
definitions, provisions for permit exemptions and permits-by-rule, and 
permit expiration timing. Ohio adopted revisions to these rules on 
March 11, 2023.
    On August 5, 2025, Ohio EPA submitted further revisions to OAC 
chapter 3745-31-03. These revisions clarify the conditions for four 
permit exemption categories. Ohio EPA adopted these revisions on July 
25, 2025.
    In the March 19, 2025, and August 5, 2025, submittals, Ohio EPA 
requested that the following paragraphs be excluded from approval into 
the SIP: OAC 3745-31-01(A)(8), (E)(3)(b)(ii) and (iii), (M)(10)(a)(ii), 
(P)(12), (Q), and (S)(11); 3745-31-03(B)(1)(p); 3745-31-05(E); 3745-31-
13(H)(1)(c); 3745-31-22(A)(3)(b); 1-hour NO<INF>2</INF> SIL in 3745-31-
23(A); 3745-31-24(F); 3745-31-26(D); 3745-31-27(A)(1)(b); and 3745-31-
34(B), (C), and (D).
    Section 110(l) of the CAA states that a SIP revision cannot be 
approved if the revision would interfere with any applicable 
requirements concerning attainment and reasonable further progress 
toward attainment of a National Ambient Air Quality Standards (NAAQS) 
or any other applicable requirement of the CAA. Based on the 
information in the submittals, these revisions are not expected to 
negatively impact air quality or interfere with any applicable CAA 
requirement.

II. Review of State Submittal

    The following discussion summarizes the rule revisions and EPA's 
analysis of them under the CAA.

A. OAC 3745-31-01 Definitions

    Ohio EPA changed the numbering system for the definitions in this 
rule to reflect the letters of the alphabet in order to streamline 
future additions or deletions. This rule is now organized with 
definitions in sections (A) through (Z) and reference materials in 
section (AA). Ohio EPA also changed references to these definitions 
throughout this chapter in order to align with the new numbering 
system.
    Ohio EPA added the definition of ``Carbon Dioxide (CO<INF>2</INF>) 
Equivalent'' under OAC 3745-31-01(C)(1) to replace similar language in 
OAC 3745-31-34.
    Ohio EPA added the definition of ``Greenhouse gases'' under OAC 
3745-31-01(G)(4) to replace similar language in OAC 3745-31-34.
    Ohio EPA clarified the definition of ``Sum of the difference'' for 
New Source Review projects under OAC 3745-31-01(M)(3)(c)(iv).
    Ohio EPA reworded the definition of ``Non-road engine'' under OAC 
3745-31-01(N)(9) [formerly OAC 3745-31-01(CCCC)] in order to be 
consistent with Federal regulations.
    Ohio EPA moved the definition of ``Reasonable possibility'' to OAC 
3745-31-01(R)(2) from OAC 3745-31-10(A)(6).
    Ohio EPA updated references to the Code of Federal Regulations and 
United States Code under OAC 3745-31-01(AA)(2) in order to reflect the 
most recent editions. Ohio EPA added references to 40 CFR 60.18, 
60.4214, 60.4243, 60.4245, 63.6585, 63.6650, 80.510, and 40 CFR part 60 
subpart JJJ to this section.
    EPA finds these revisions approvable because they provide clarity 
to terms used in various rules throughout the SIP

[[Page 938]]

and do not change the requirements of the rules themselves.

B. OAC 3745-31-02 Applicability, Requirements, and Obligations

    OAC 3745-31-02 contains provisions requiring sources of air 
pollution to obtain an installation permit. Ohio EPA modified the rule 
to clarify that provisions for permits-by-rule are now located in OAC 
3745-31-30.

C. OAC 3745-31-03 Exemptions

    OAC 3745-31-03 contains provisions for sources that qualify for 
permit exemptions. This rule relieves exempt sources from the 
obligation to apply for and obtain a construction permit but does not 
exempt any source from CAA requirements. Previous provisions for 
permits-by-rule are now located in OAC 3745-31-30.
    The rule revisions change the following permanent exemptions under 
OAC 3745-31-03(B)(1):
    (l): Storage tanks. In subparagraph (i), pertaining to inorganic 
liquids, a reference to paragraph (B)(1)(m)(vii) has been corrected to 
read (B)(1)(l)(vii).
    (u): Very small municipal waste combustion units. These units are 
subject to the 40 CFR part 60 subparts EEEE and FFFF and are title V 
sources by definition, thus they cannot be exempted. The text of this 
paragraph has been removed and replaced with ``reserved.''
    (pp): Two-stroke or four-stroke air-cooled gasoline powered engines 
of no more than twenty horsepower. Natural gas and liquified propane 
gas will be allowable fuels, as well as gasoline.
    (tt): One-time use of a mobile treatment unit or vacuum truck. 
Under (ii), references to (B)(1)(b), (B)(2)(d) and (B)(2)(e) have been 
corrected to refer to paragraphs (C)(1)(b), (C)(2)(d) and (C)(2)(e), 
respectively, under the newly created OAC 3745-31-30.
    In addition, the rule revisions add the following new permanent 
exemptions under OAC 3745-31-03(B)(1):
    (kkk): Valve sites and metering and regulating facilities within 
the natural gas transmission and downstream distribution pipeline 
system that have a potential to emit of less than 5.0 tons of VOC per 
year.
    (lll): Temporary portable flares used in conjunction with on-site 
repairs, maintenance, or construction/dismantlement of pipelines used 
for transmission or downstream distribution of natural gas, butane, or 
similar liquified petroleum gas, that are not located at well sites or 
natural gas processing facilities and are operated in accordance with 
40 CFR 60.18 and process no more than 14,000.0 million British thermal 
units of gas per year.
    (mmm): Temporary fuel-burning equipment (e.g., boilers or engines) 
used to replace main fuel-burning equipment during periods of 
maintenance or repair provided the actual emissions and hourly 
potential to emit of the temporary sources do not exceed that of the 
replaced sources, the temporary source does not remain at the location 
for more than ninety consecutive days, and the owner or operator has 
notified the director prior to the sources use. This exemption does not 
apply to sources subject to the portable source requirements under 
paragraph (B)(1)(p) of this rule.
    (nnn): Breweries of beer and flavored malt beverages breweries, 
including packaging and labeling lines. Production capacity may not 
exceed 60,000 31-gallon barrels per year.
    (ooo): Portable sawmills which process no more than five million 
board feet of green wood per year, are powered by exempt non-road 
engines, and where wood waste is mechanically discharged directly to 
storage piles.
    (ppp): Sand and gravel storage and handling operations that process 
no more than 125,000 tons of sand and gravel combined per year. This 
does not include roadways and parking areas at these operations.
    (qqq): Wet cooling towers, treatment systems for process cooling 
water or boiler feedwater, and water tanks, reservoirs, or other water 
containers designed to cool, store, or otherwise handle water 
(including rainwater). Included in the exemption are water-handling 
equipment not subject to Federal NESHAPs, with no direct contact with 
certain chemical agents, and with a predicted particulate drift below a 
certain threshold.
    (rrr): Animal crematories that process no more than 600 pounds per 
hour of whole animals and bedding, with the presence of infectious and 
zoonotic agents prohibited, and which only supply natural gas, propane, 
or butane to the burners, and does not employ liquid accelerants.
    (sss): Production electric arc welding operations that use no more 
than 116 pounds of electrode per day.
    (ttt): Ultraviolet type or corona discharge type ozone generators 
with maximum output capacity not exceeding 189 grams of ozone per hour.
    The submittal states these new permanent exemptions would not have 
an adverse impact on emissions or air quality. Sources meeting the 
criteria for these exemptions are low-emitting sources which would not 
have required a permit to construct or operate prior to this revision. 
Some would have been considered ``de minimis'' sources in accordance 
with OAC 3745-15-05. The remaining sources would not have been 
permitted in accordance with Ohio EPA's interpretation of OAC 3745-31 
rule requirements. These source categories were included as explicit 
exemptions to provide clarity to small businesses in determining if air 
permits are required for their operations. A quantitative analysis 
showed that each qualifying source in these exempt categories would 
emit no more than 5.0 tons per year of any pollutant. In addition, if 
these sources were required to obtain a permit, it would not result in 
further controls or emissions reductions beyond the conditions to meet 
the exemption. The rule also does not interfere with any other 
applicable CAA requirement, including the applicability of other SIP 
requirements, and those found in the New Source Performance Standards 
and the National Emission Standards for Hazardous Air Pollutants. EPA 
agrees with Ohio's justifications and proposes to find these revisions 
approvable.

D. OAC 3745-31-05 Criteria for Decision by the Director

    OAC 3745-31-05 identifies criteria used in issuing an installation 
permit. This rule revision contains the following changes:
    Ohio EPA added language to OAC 3745-31-05(A)(3)(a)(i) to clarify 
that a source may be subject to Best Available Technology (BAT) 
requirements if it has been modified on or after January 1, 1974.
    Ohio EPA modified a table in OAC 3745-31-05(I) in order to reflect 
changes in divisional responsibilities when the Ohio EPA Air Division 
must coordinate its review of certain types of permits.
    EPA finds these revisions approvable as they are clarifications 
that do not affect the requirements of the rule.

E. OAC 3745-31-07 Termination, Revocation, Expiration, Renewal, 
Revision and Transfer

    OAC 3745-31-07 contains provisions on the termination, revocation, 
expiration, renewal, revision and transfer of air permits. Ohio EPA 
added two provisions under OAC 3745-31-07(A)(1) to modify the 
requirement that an installation permit terminate after eighteen 
months. If the permit is subject to an appeal by a party other than the 
owner or operator, the time period may be extended. If the permit has 
been superseded by a subsequent permit, the existing permit will be 
terminated.

[[Page 939]]

    40 CFR part 52 describes Federal guidelines for approval and 
promulgation of SIPs. 40 CFR 52.21(r) ``Source obligation'', describes 
source obligations to construct within 18 months of receiving approval 
to construct, but the Administrator may extend this period ``upon a 
satisfactory showing that an extension is justified''. In keeping with 
these guidelines, the revisions to OAC 3745-31-07 clarify situations 
that Ohio EPA deems ``justified'' to grant an extension. These 
situations include the source undertaking a continuing program of 
construction during the 18-month period; the source entering into a 
binding contractual obligation to undertake and complete a continuing 
program of construction; the source requesting and receiving an 
extension from the director of the date by which the source must be 
constructed per an administrative modification; or the construction 
permit being subject to a third-party appeal. Under this last 
situation, the 18-month construction deadline would be paused during 
the appeal until it is fully resolved, at which time the deadline would 
resume.
    Ohio EPA issued an engineering guide, posted on its website, on 
October 31, 2025, detailing the process the agency will follow when a 
construction permit is appealed. This includes notifying interested 
parties of the appeal and that the permit's construction period will be 
paused until the appeal is resolved. Ohio EPA will also assess any 
changes in air quality or Federal standards that occurred since the 
appeal was filed, such as newly constructed nearby emissions sources, 
changes in the NAAQS, or changes to applicable New Source Performance 
Standards or National Emission Standards for Hazardous Air Pollutants, 
and review any submitted air quality modeling to ensure it meets 
current requirements. If the modeling review shows issues, the 
Permittee will be notified and required to adjust their permit 
application to meet relevant requirements and submit revised modeling.
    EPA finds these revisions approvable as they are protective of the 
NAAQS, ensure the public is adequately informed of the permitting 
process, and do not contravene any CAA requirement.

F. OAC 3745-31-06 Through 3745-31-29

    The following rules were revised with minor formatting changes for 
clarification and citation corrections:

<bullet> 3745-31-06 Completeness determinations, processing 
requirements, public participation, public notice, and issuance
<bullet> 3745-31-09 Variances on operation
<bullet> 3745-31-10 NSR projects at existing emissions units at a major 
stationary source
<bullet> 3745-31-11 Attainment provisions--ambient air increments, 
ceilings and classifications
<bullet> 3745-31-12 Attainment provisions--data submission requirements
<bullet> 3745-31-13 Attainment provisions--review of major stationary 
sources and major modifications, stationary source applicability and 
exemptions
<bullet> 3745-31-14 Attainment provisions--preapplication analysis
<bullet> 3745-31-15 Attainment provisions--control technology review
<bullet> 3745-31-16 Attainment provisions--major stationary source 
impact analysis
<bullet> 3745-31-17 Attainment provisions--additional impact analysis
<bullet> 3745-31-18 Attainment provisions--air quality models
<bullet> 3745-31-19 Attainment provisions--notice to the United States 
environmental protection agency
<bullet> 3745-31-20 Attainment provisions--innovative control 
technology
<bullet> 3745-31-21 Nonattainment provisions--review of major 
stationary sources and major modifications--stationary source 
applicability and exemptions
<bullet> 3745-31-22 Nonattainment provisions--conditions for approval
<bullet> 3745-31-23 Nonattainment provisions--stationary sources 
locating in designated clean or unclassifiable areas which would cause 
or contribute to a violation of a national ambient air quality standard
<bullet> 3745-31-24 Nonattainment provisions--baseline for determining 
credit for emission and air quality offsets
<bullet> 3745-31-25 Nonattainment provisions--location of offsetting 
emissions
<bullet> 3745-31-26 Nonattainment provisions--offset ratio requirements
<bullet> 3745-31-27 Nonattainment provisions--administrative procedures 
for emission offsets
<bullet> 3745-31-28 Review of major stationary sources of hazardous air 
pollutants requiring MACT determinations
<bullet> 3745-31-29 General permit-to-install and general PTIO

    EPA finds these revisions approvable as they are clarifications and 
corrections that do not affect the requirements of the rules.

G. OAC 3745-31-30 Permits-by-Rule

    OAC 3745-31-30 contains provisions for sources that qualify for 
permits-by-rule (PBR). These provisions were previously under OAC 3745-
31-03, but Ohio EPA has separated these provisions into their own rule 
for simplicity.
    The following changes to the original OAC 3745-31-03 language are 
being made:
    Ohio added OAC 3745-31-30(B), stating the relocation of a portable 
PBR source is exempt under OAC 3745-31-03, provided the requirements of 
OAC 3745-31-03(B)(1)(p) are met.
    Ohio added the word ``reciprocating'' to OAC 3745-31-30(C)(2)(a) to 
clarify that combustion turbines are excluded.
    Ohio deleted redundant language in OAC 3745-31-30(C)(2)(c)(iii).
    Ohio corrected citations in OAC 3745-31-30(C)(2)(l).
    Ohio added a new ``transloader'' PBR to OAC 3745-31-30(C)(2)(n) to 
address portable belt or screw conveyor devices used to transfer bulk 
material between trucks and railcars.
    Ohio added a new ``petroleum-solvent dry cleaner'' PBR to OAC 3745-
31-30(C)(2)(o) to address small and medium-sized dry-cleaning 
establishments that use non-perchloroethylene solvents.
    EPA finds these revisions approvable as they are clarifications and 
corrections that do not affect the requirements of the rule, and the 
new PBRs are modifications of the mechanism for permitting and do not 
impact emissions or air quality. PBRs include the applicable emission 
limits, control requirements, operational restrictions, monitoring, 
recordkeeping, and reporting requirements that would go into a 
traditional permit.

H. OAC 3745-31-32 Plantwide Applicability Limit

    This rule contains provisions for sources that choose to be covered 
under a plantwide applicability limit (PAL).
    Ohio modified OAC 3745-31-32(A)(4) to reflect the exemption from 
BAT requirements described in OAC 3745-31-05(A)(3)(a)(iv) for PALs. EPA 
finds these revisions approvable as they are clarifications that do not 
affect the requirements of the rule.

III. What action is EPA taking?

    EPA is proposing to approve Ohio EPA's March 19, 2025, and August 
5, 2025, submittals as revisions to its existing SIP. EPA finds that 
the revisions are consistent with Federal

[[Page 940]]

requirements. As requested by Ohio EPA, the following provisions are 
not included in this proposed approval: OAC 3745-31-01(A)(8), 
(E)(3)(b)(ii) and (iii), (M)(10)(a)(ii), (P)(12), (Q), and (S)(11); 
3745-31-03(B)(1)(p); 3745-31-05(E); 3745-31-13(H)(1)(c); 3745-31-
22(A)(3)(b); 1-hour NO<INF>2</INF> SIL in 3745-31-23(A); 3745-31-24(F); 
3745-31-26(D); 3745-31-27(A)(1)(b); and 3745-31-34(B), (C), and (D).

IV. Incorporation by Reference

    In this rulemaking, EPA is proposing to include in a final EPA rule 
regulatory text that includes incorporation by reference. In accordance 
with requirements of 1 CFR 51.5, EPA is proposing to incorporate by 
reference Ohio rule(s) 3745-31-01 [with the exception of OAC 3745-31-
01(A)(8), (E)(3)(b)(ii) and (iii), (M)(10)(a)(ii), (P)(12), (Q), and 
(S)(11)], 3745-31-02, 3745-31-03 [with the exception of OAC 3745-31-
03(B)(1)(p)], 3745-31-05 [with the exception of OAC 3745-31-05(E)], 
3745-31-06, 3745-31-07, 3745-31-09, 3745-31-10, 3745-31-11, 3745-31-12, 
3745-31-13 [with the exception of OAC 3745-31-13(H)(1)(c)], 3745-31-14, 
3745-31-15, 3745-31-16, 3745-31-17, 3745-31-18, 3745-31-19, 3745-31-20, 
3745-31-21, 3745-31-22 [with the exception of OAC 3745-31-22(A)(3)(b)], 
3745-31-23 [with the exception of the 1-hour NO<INF>2</INF> SIL in 
3745-31-23(A)], 3745-31-24 [with the exception of OAC 3745-31-24(F)], 
3745-31-25, 3745-31-26 [with the exception of OAC 3745-31-26(D)], 3745-
31-27 [with the exception of OAC 3745-31-27(A)(1)(b)], 3745-31-28, 
3745-31-29, 3745-31-30, and 3745-31-32, effective March 11, 2023, and 
August 14, 2025, discussed in section II of this preamble. EPA has 
made, and will continue to make, these documents generally available 
through <a href="http://www.regulations.gov">www.regulations.gov</a> and at the EPA Region 5 Office (please 
contact the person identified in the FOR FURTHER INFORMATION CONTACT 
section of this preamble for more information).

V. Statutory and Executive Order Reviews

    Under the CAA, the Administrator is required to approve a SIP 
submission that complies with the provisions of the CAA and applicable 
Federal regulations. 42 U.S.C. 7410(k); 40 CFR 52.02(a). Thus, in 
reviewing SIP submissions, EPA's role is to approve State choices, 
provided that they meet the criteria of the CAA. Accordingly, this 
action merely approves State law as meeting Federal requirements and 
does not impose additional requirements beyond those imposed by State 
law. For that reason, this action:
    <bullet> Is not a significant regulatory action subject to review 
by the Office of Management and Budget under Executive Order 12866 (58 
FR 51735, October 4, 1993);
    <bullet> Is not subject to Executive Order 14192 (90 FR 9065, 
February 6, 2025) because SIP actions are exempt from review under 
Executive Order 12866;
    <bullet> Does not impose an information collection burden under the 
provisions of the Paperwork Reduction Act (44 U.S.C. 3501 et seq.);
    <bullet> Is certified as not having a significant economic impact 
on a substantial number of small entities under the Regulatory 
Flexibility Act (5 U.S.C. 601 et seq.);
    <bullet> Does not contain any unfunded mandate or significantly or 
uniquely affect small governments, as described in the Unfunded 
Mandates Reform Act of 1995 (Pub. L. 104-4);
    <bullet> Does not have federalism implications as specified in 
Executive Order 13132 (64 FR 43255, August 10, 1999);
    <bullet> Is not subject to Executive Order 13045 (62 FR 19885, 
April 23, 1997) because it approves a State program;
    <bullet> Is not a significant regulatory action subject to 
Executive Order 13211 (66 FR 28355, May 22, 2001); and
    <bullet> Is not subject to requirements of section 12(d) of the 
National Technology Transfer and Advancement Act of 1995 (15 U.S.C. 272 
note) because application of those requirements would be inconsistent 
with the Clean Air Act.
    In addition, the SIP is not approved to apply on any Indian 
reservation land or in any other area where EPA or an Indian Tribe has 
demonstrated that a Tribe has jurisdiction. In those areas of Indian 
country, the rulemaking does not have Tribal implications and will not 
impose substantial direct costs on Tribal governments or preempt Tribal 
law as specified by Executive Order 13175 (65 FR 67249, November 9, 
2000).

List of Subjects in 40 CFR Part 52

    Environmental protection, Air pollution control, Carbon monoxide, 
Incorporation by reference, Intergovernmental relations, Lead, Nitrogen 
dioxide, Ozone, Particulate matter, Reporting and recordkeeping 
requirements, Sulfur oxides, Volatile organic compounds.

    Dated: December 23, 2025.
Cheryl Newton,
Acting Regional Administrator, Region 5.
[FR Doc. 2026-00258 Filed 1-8-26; 8:45 am]
BILLING CODE 6560-50-P


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