Rule2026-10280

Air Plan Revisions; Arizona; Arizona Department of Environmental Quality; Gila County Reasonably Available Control Technology

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Published
May 22, 2026
Effective
June 22, 2026

Issuing agencies

Environmental Protection Agency

Abstract

The Environmental Protection Agency (EPA) is taking final action to approve, under the Clean Air Act (CAA or "Act"), revisions to the Arizona state implementation plan (SIP). These revisions concern the Arizona Department of Environmental Quality's (ADEQ's) demonstration regarding reasonably available control technology (RACT) requirements for the 2015 ozone national ambient air quality standards (NAAQS or "standards") within the Gila County portion of the Phoenix- Mesa ozone nonattainment area.

Full Text

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<title>Federal Register, Volume 91 Issue 99 (Friday, May 22, 2026)</title>
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[Federal Register Volume 91, Number 99 (Friday, May 22, 2026)]
[Rules and Regulations]
[Pages 30214-30217]
From the Federal Register Online via the Government Publishing Office [<a href="http://www.gpo.gov">www.gpo.gov</a>]
[FR Doc No: 2026-10280]


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ENVIRONMENTAL PROTECTION AGENCY

40 CFR Part 52

[EPA-R09-OAR-2025-2961; FRL-13073-02-R9]


Air Plan Revisions; Arizona; Arizona Department of Environmental 
Quality; Gila County Reasonably Available Control Technology

AGENCY: Environmental Protection Agency (EPA).

ACTION: Final rule.

-----------------------------------------------------------------------

SUMMARY: The Environmental Protection Agency (EPA) is taking final 
action to approve, under the Clean Air Act (CAA or ``Act''), revisions 
to the Arizona state implementation plan (SIP). These revisions concern 
the Arizona Department of Environmental Quality's (ADEQ's) 
demonstration regarding reasonably available control technology (RACT) 
requirements for the 2015 ozone national ambient air quality standards 
(NAAQS or ``standards'') within the Gila County portion of the Phoenix-
Mesa ozone nonattainment area.

DATES: This rule is effective June 22, 2026.

[[Page 30215]]


ADDRESSES: The EPA has established a docket for this action under 
Docket ID No. EPA-R09-OAR-2025-2961. All documents in the docket are 
listed on the <a href="https://www.regulations.gov">https://www.regulations.gov</a> website. Although listed in 
the index, some information is not publicly available, e.g., 
Confidential Business Information (CBI) or other information whose 
disclosure is restricted by statute. Certain other material, such as 
copyrighted material, is not placed on the internet and will be 
publicly available only in hard copy form. Publicly available docket 
materials are available through <a href="https://www.regulations.gov">https://www.regulations.gov</a>, or please 
contact the person identified in the FOR FURTHER INFORMATION CONTACT 
section for additional availability information. If you need assistance 
in a language other than English or if you are a person with a 
disability who needs a reasonable accommodation at no cost to you, 
please contact the person identified in the FOR FURTHER INFORMATION 
CONTACT section.

FOR FURTHER INFORMATION CONTACT: Elijah Gordon, EPA Region IX, 75 
Hawthorne St., San Francisco, CA 94105; telephone number: (415) 972-
3158; email address: <a href="/cdn-cgi/l/email-protection#7a1d15081e1514541f1613101b123a1f0a1b541d150c"><span class="__cf_email__" data-cfemail="c5a2aab7a1aaabeba0a9acafa4ad85a0b5a4eba2aab3">[email&#160;protected]</span></a>.

SUPPLEMENTARY INFORMATION: Throughout this document, ``we,'' ``us,'' 
and ``our'' refer to the EPA.

Table of Contents

I. Proposed Action
II. Public Comments and EPA Responses
III. EPA Action
IV. Statutory and Executive Order Reviews

I. Proposed Action

    On February 12, 2026 (91 FR 6557), the EPA proposed to approve the 
following submittal into the Arizona SIP.

                                           Table 1--Submitted Document
----------------------------------------------------------------------------------------------------------------
                Local agency                            Document title                Adopted        Submitted
----------------------------------------------------------------------------------------------------------------
ADEQ.......................................  SIP Revision: Gila County, Arizona       03/24/2025      03/26/2025
                                              RACT Analysis and Negative
                                              Declarations for the 2015 Ozone
                                              NAAQS.
----------------------------------------------------------------------------------------------------------------

    We proposed to approve the ADEQ's submittal, ``SIP Revision: Gila 
County, Arizona RACT Analysis and Negative Declarations for the 2015 
Ozone NAAQS'' (``2025 RACT SIP''), because we determined that it 
complies with the relevant CAA requirements. Our proposed action 
contains more information on the submittal and our evaluation.

II. Public Comments and EPA Responses

    The EPA's proposed action provided a 30-day public comment period. 
During this period, we received no comments.

III. EPA Action

    No comments were submitted. Therefore, as authorized in section 
110(k)(3) of the Act, the EPA is approving the 2025 RACT SIP into the 
Arizona SIP.

IV. Statutory and Executive Order Reviews

    Under the CAA, the Administrator is required to approve a SIP 
submission that complies with the provisions of the Act and applicable 
federal regulations. 42 U.S.C. 7410(k); 40 CFR 52.02(a). Thus, in 
reviewing SIP submissions, the EPA's role is to approve state choices, 
provided that they meet the criteria of the Clean Air Act. 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 an Executive Order 14192 (90 FR 9065, February 6, 
2025) regulatory action because this action is not significant 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 CAA.
    In addition, the SIP is not approved to apply on any Indian 
reservation land or in any other area where the EPA or an Indian Tribe 
has demonstrated that a Tribe has jurisdiction. In those areas of 
Indian country, the rule 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).
    This action is subject to the Congressional Review Act, and the EPA 
will submit a rule report to each House of the Congress and to the 
Comptroller General of the United States. This action is not a ``major 
rule'' as defined by 5 U.S.C. 804(2).
    Under section 307(b)(1) of the CAA, petitions for judicial review 
of this action must be filed in the United States Court of Appeals for 
the appropriate circuit by July 21, 2026. Filing a petition for 
reconsideration by the Administrator of this final rule does not affect 
the finality of this action for the purposes of judicial review nor 
does it extend the time within which a petition for judicial review may 
be filed, and shall not postpone the effectiveness of such rule or 
action. This action may not be challenged later in proceedings to 
enforce its requirements. (See section 307(b)(2).)

List of Subjects in 40 CFR Part 52

    Environmental protection, Air pollution control, Incorporation by 
reference, Intergovernmental relations, Nitrogen oxides, Ozone, 
Reporting and recordkeeping requirements, Volatile organic compounds.

    Dated: May 8, 2026.
Michael Martucci,
Acting Regional Administrator, Region IX.
    For the reasons stated in the preamble, the EPA amends 40 CFR part 
52 as follows:

[[Page 30216]]

PART 52--APPROVAL AND PROMULGATION OF IMPLEMENTATION PLANS

0
1. The authority citation for Part 52 continues to read as follows:

    Authority: 42 U.S.C. 7401 et seq.

Subpart D--Arizona

0
2. Section 52.120 is amended by adding in paragraph (e), table 1, under 
the subheading ``Part D Elements and Plans for the Metropolitan Phoenix 
and Tucson Areas'' an entry for ``SIP Revision: Gila County, Arizona 
RACT Analysis and Negative Declarations for the 2015 Ozone NAAQS'' 
after the entry for ``Revision of Rule 322 of the Maricopa County Air 
Pollution Control Regulations, Appendix 12: RACT Analyses Submitted to 
the Maricopa County Air Quality Department from the Arizona Public 
Service and the Salt River Project, only.'' The revision reads as 
follows:


Sec.  52.120  Identification of plan.

* * * * *
    (e) * * *

                       Table 1--EPA-Approved Non-Regulatory and Quasi-Regulatory Measures
       [Excluding certain resolutions and statutes, which are listed in tables 2 and 3, respectively] \1\
----------------------------------------------------------------------------------------------------------------
                                      Applicable
                                     geographic or      State submittal
      Name of SIP provision       nonattainment area         date          EPA approval date      Explanation
                                   or title/ subject
----------------------------------------------------------------------------------------------------------------
                         The State of Arizona Air Pollution Control Implementation Plan
----------------------------------------------------------------------------------------------------------------
 
                                                  * * * * * * *
----------------------------------------------------------------------------------------------------------------
                     Part D Elements and Plans for the Metropolitan Phoenix and Tucson Areas
----------------------------------------------------------------------------------------------------------------
 
                                                  * * * * * * *
----------------------------------------------------------------------------------------------------------------
SIP Revision: Gila County,        Gila County         March 26, 2025....  May 22, 2026, 91    Adopted by the
 Arizona RACT Analysis and         portion of                              FR [insert          Arizona
 Negative Declarations for the     Phoenix-Mesa                            Federal Register    Department of
 2015 Ozone NAAQS.                 nonattainment                           page where the      Environmental
                                   area for 2015 8-                        document begins].   Quality on March
                                   hour ozone NAAQS.                                           24, 2025.
 
                                                  * * * * * * *
----------------------------------------------------------------------------------------------------------------
\1\ Table 1 is divided into three parts: Clean Air Act Section 110(a)(2) State Implementation Plan Elements
  (excluding Part D Elements and Plans), Part D Elements and Plans (other than for the Metropolitan Phoenix or
  Tucson Areas), and Part D Elements and Plans for the Metropolitan Phoenix and Tucson Areas.

* * * * *

0
3. Section 52.122 is amended by adding paragraph (a)(4) to read as 
follows:


Sec.  52.122  Negative declarations.

* * * * *
    (a) * * *
    (4) Arizona Department of Environmental Quality
    (i) The following negative declarations for the 2015 ozone NAAQS 
were adopted by the Arizona Department of Environmental Quality for the 
Gila County portion of the Phoenix-Mesa 2015 ozone nonattainment area.

----------------------------------------------------------------------------------------------------------------
                                                                                                Adopted: 03/24/
                                                                                                2025 Submitted:
                  CTG document No.                                    Category                  03/26/2025 SIP-
                                                                                                approved: 05/22/
                                                                                                      2026
----------------------------------------------------------------------------------------------------------------
(A) EPA-450/R-75-102................................  Design Criteria for Stage I Vapor                       X
                                                       Control--Gasoline Service Stations.
(B) EPA-450/2-77-008................................  Surface Coating of Cans................                 X
(C) EPA-450/2-77-008................................  Surface Coating of Coils...............                 X
(D) EPA-450/2-77-008................................  Surface Coating of Paper...............                 X
(E) EPA-450/2-77-008................................  Surface Coating of Fabrics.............                 X
(F) EPA-450/2-77-008................................  Surface Coating of Automobiles and                      X
                                                       Light-Duty Trucks.
(G) EPA-450/2-77-022................................  Solvent Metal Cleaning.................                 X
(H) EPA-450/2-77-025................................  Refinery Vacuum Producing Systems,                      X
                                                       Wastewater Separators, and Process
                                                       Unit Turnarounds.
(I) EPA-450/2-77-026................................  Tank Truck Gasoline Loading Terminals..                 X
(J) EPA-450/2-77-032................................  Surface Coating of Metal Furniture.....                 X
(K) EPA-450/2-77-033................................  Surface Coating of Insulation of Magnet                 X
                                                       Wire.
(L) EPA-450/2-77-034................................  Surface Coating of Large Appliances....                 X
(M) EPA-450/2-77-035................................  Bulk Gasoline Plants...................                 X
(N) EPA-450/2-77-036................................  Storage of Petroleum Liquids in Fixed-                  X
                                                       Roof Tanks.
(O) EPA-450/2-77-037................................  Cutback Asphalt........................                 X
(P) EPA-450/2-78-015................................  Surface Coating of Miscellaneous Metal                  X
                                                       Parts and Products.
(Q) EPA-450/2-78-029................................  Manufacture of Synthesized                              X
                                                       Pharmaceutical Products.
(R) EPA-450/2-78-030................................  Manufacture of Pneumatic Rubber Tires..                 X
(S) EPA-450/2-78-032................................  Factory Surface Coating of Flat Wood                    X
                                                       Paneling.

[[Page 30217]]

 
(T) EPA-450/2-78-033................................  Graphic Arts-Rotogravure and                            X
                                                       Flexography.
(U) EPA-450/2-78-036................................  Leaks from Petroleum Refinery Equipment                 X
(V) EPA-450/2-78-047................................  Petroleum Liquid Storage in External                    X
                                                       Floating Roof Tanks.
(W) EPA-450/2-78-051................................  Leaks from Gasoline Tank Trucks and                     X
                                                       Vapor Collection Systems.
(X) EPA-450/3-82-009................................  Large Petroleum Dry Cleaners...........                 X
(Y) EPA-450/3-83-006................................  Leaks from Synthetic Organic Chemical                   X
                                                       Polymer and Resin Manufacturing
                                                       Equipment.
(Z) EPA-450/3-83-007................................  Equipment Leaks from Natural Gas/                       X
                                                       Gasoline Processing Plants.
(AA) EPA-450/3-83-008...............................  Manufacture of High-Density                             X
                                                       Polyethylene, Polypropylene, and
                                                       Polystyrene Resins.
(BB) EPA-450/3-84-015...............................  Air Oxidation Processes in Synthetic                    X
                                                       Organic Chemical Manufacturing
                                                       Industry.
(CC) EPA-450/4-91-031...............................  Reactor Processes and Distillation                      X
                                                       Operations in Synthetic Organic
                                                       Chemical Manufacturing Industry.
(DD) EPA-453/R-96-007...............................  Wood Furniture Manufacturing Operations                 X
(EE) EPA-453/R-94-032 61 FR 44050; 8/27/96..........  Surface Coating Operations at                           X
                                                       Shipbuilding and Ship Repair
                                                       Facilities.
(FF) EPA-453/R-97-004 59 FR 29216; 6/06/94..........  Coating Operations at Aerospace                         X
                                                       Manufacturing and Rework.
(GG) EPA-453/R-06-001...............................  Industrial Cleaning Solvents...........                 X
(HH) EPA-453/R-06-002...............................  Offset Lithographic Printing and                        X
                                                       Letterpress Printing.
(II) EPA-453/R-06-003...............................  Flexible Package Printing..............                 X
(JJ) EPA-453/R-06-004...............................  Flat Wood Paneling Coatings............                 X
(KK) EPA 453/R-07-003...............................  Paper, Film, and Foil Coatings.........                 X
(LL) EPA 453/R-07-004...............................  Large Appliance Coatings...............                 X
(MM) EPA 453/R-07-005...............................  Metal Furniture Coatings...............                 X
(NN) EPA 453/R-08-003...............................  Miscellaneous Metal and Plastic Parts                   X
                                                       Coatings: Table 2--Metal Parts and
                                                       Products.
(OO) EPA 453/R-08-003...............................  Miscellaneous Metal and Plastic Parts                   X
                                                       Coatings: Table 3--Plastic Parts and
                                                       Products.
(PP) EPA 453/R-08-003...............................  Miscellaneous Metal and Plastic Parts                   X
                                                       Coatings: Table 4--Automotive/
                                                       Transportation and Business Machine
                                                       Plastic Parts.
(QQ) EPA 453/R-08-003...............................  Miscellaneous Metal and Plastic Parts                   X
                                                       Coatings: Table 5--Pleasure Craft
                                                       Surface Coating.
(RR) EPA 453/R-08-003...............................  Table 6--Motor Vehicle Materials.......                 X
(SS) EPA 453/R-08-004...............................  Fiberglass Boat Manufacturing Materials                 X
(TT) EPA 453/R-08-005...............................  Miscellaneous Industrial Adhesives.....                 X
(UU) EPA 453/R-08-006...............................  Automobile and Light-Duty Truck                         X
                                                       Assembly Coatings.
(VV) EPA 453/B-16-001...............................  Oil and Natural Gas Industry...........                 X
(WW)--N/A--.........................................  Major non-CTG VOC Sources..............                 X
(XX)--N/A--.........................................  Major non-CTG NOX Sources..............                 X
----------------------------------------------------------------------------------------------------------------

    (ii) [Reserved]
* * * * *
[FR Doc. 2026-10280 Filed 5-21-26; 8:45 am]
BILLING CODE 6560-50-P


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Indexed from Federal Register on May 22, 2026.

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