National Emission Standards for Hazardous Air Pollutants; Delegation of Authority to Oklahoma

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<title>Federal Register, Volume 91 Issue 1 (Friday, January 2, 2026)</title>
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[Federal Register Volume 91, Number 1 (Friday, January 2, 2026)]
[Rules and Regulations]
[Pages 52-58]
From the Federal Register Online via the Government Publishing Office [<a href="http://www.gpo.gov">www.gpo.gov</a>]
[FR Doc No: 2025-24149]

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ENVIRONMENTAL PROTECTION AGENCY

40 CFR Parts 61 and 63

[EPA-R06-OAR-2020-0086; FRL-12761-02-R6]

National Emission Standards for Hazardous Air Pollutants;
Delegation of Authority to Oklahoma

AGENCY: Environmental Protection Agency (EPA).

ACTION: Final rule; notice of delegation.

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

SUMMARY: The Oklahoma Department of Environmental Quality (ODEQ) has

[[Page 53]]

submitted updated regulations for receiving delegation and approval of
its program for the implementation and enforcement of certain National
Emission Standards for Hazardous Air Pollutants (NESHAP) for all
sources as provided for under previously approved delegation
mechanisms. The updated State regulations incorporate by reference
certain NESHAP promulgated by the Environmental Protection Agency (EPA)
at parts 61 and 63, as they existed through June 30, 2023. The EPA is
providing notice that it is taking final action to approve the
delegation of certain NESHAP to ODEQ. The delegation of authority under
this action applies to sources located in certain areas of Indian
country as discussed herein.

DATES: This rule is effective on February 2, 2026.

ADDRESSES: The EPA has established a docket for this action under
Docket ID No. EPA-R06-OAR-2020-0086. 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. Publicly available
docket materials are available electronically through <a href="https://www.regulations.gov">https://www.regulations.gov</a>.

FOR FURTHER INFORMATION CONTACT: Clovis Steib, EPA Region 6 Office,
Infrastructure and Ozone Section (ARSI), telephone number: (214) 665-
7566, email address: <a href="/cdn-cgi/l/email-protection#2152554448430f424d4e574852614451400f464e57"><span class="__cf_email__" data-cfemail="f68582939f94d8959a99809f85b6938697d8919980">[email&#160;protected]</span></a>.

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

I. Background

The background for this action is discussed in detail in our July
10, 2025, proposal (90 FR 30613). In that document we proposed to
approve updating the delegation of certain NESHAP to ODEQ. The
delegation provides ODEQ with the primary responsibility to implement
and enforce the delegated standards, as they existed through June 30,
2023.

II. Response to Comments

EPA received two anonymous public comments. One recommends EPA not
delegate NESHAP implementation and enforcement authority to ODEQ on
account of emissions from fossil fuels costing taxpayers. We thank the
commenter for the comment but find it to be beyond the scope of this
action. This action approves ODEQ's requested updates to its current
NESHAP delegation, it does not speak to fossil fuel emissions more
broadly, the appropriate regulatory mechanism for such emissions, or
the cost associated with regulating the industry. The second comment
recommends EPA encourage ODEQ to conduct integrated emissions planning
that considers carbon dioxide emissions in addition to hazardous air
pollutant (HAP) emissions. We thank the commenter for the comment but
find the request to be beyond the scope of this action. As previously
noted, this action approves ODEQ's requested updates to its current
NESHAP delegation, it does not speak to Oklahoma's broader regulatory
scheme or the regulation of emissions beyond HAPs. As such, we are
finalizing the NESHAP delegation to ODEQ as proposed.

III. Impacts on Areas of Indian Country

Following the U.S. Supreme Court decision in McGirt v. Oklahoma,
140 S. Ct. 2452 (2020), the Governor of the State of Oklahoma requested
approval under section 10211(a) of the Safe, Accountable, Flexible,
Efficient Transportation Equity Act of 2005: A Legacy for Users, Public
Law 109-59, 119 Stat. 1144, 1937 (August 10, 2005) (``SAFETEA''), to
administer in certain areas of Indian country (as defined at 18 U.S.C.
1151) the State's environmental regulatory programs that were
previously approved by the EPA outside of Indian country. The State's
request excluded certain areas of Indian country further described
below.
The EPA has approved Oklahoma's SAFETEA request to administer all
of the State's EPA-approved environmental regulatory programs in the
requested areas of Indian country. As requested by Oklahoma, the EPA's
approval under SAFETEA does not include Indian country lands, including
rights-of-way running through the same, that: (1) qualify as Indian
allotments, the Indian titles to which have not been extinguished,
under 18 U.S.C. 1151(c); (2) are held in trust by the United States on
behalf of an individual Indian or Tribe; or (3) are owned in fee by a
Tribe, if the Tribe (a) acquired that fee title to such land, or an
area that included such land, in accordance with a treaty with the
United States to which such Tribe was a party, and (b) never allotted
the land to a member or citizen of the Tribe (collectively ``excluded
Indian country lands'').
The EPA's approval under SAFETEA expressly provided that to the
extent the EPA's prior approvals of Oklahoma's environmental programs
excluded Indian country, any such exclusions are superseded for the
geographic areas of Indian country covered by the EPA's approval of
Oklahoma's SAFETEA request. The approval also provided that future
revisions or amendments to Oklahoma's approved environmental regulatory
programs would extend to the covered areas of Indian country (without
any further need for additional requests under SAFETEA).
As explained above, the EPA is finalizing an update to the Oklahoma
NESHAP delegation which will apply statewide in Oklahoma. Consistent
with the EPA's SAFETEA approval, this NESHAP delegation will apply to
areas of Indian country pursuant to the SAFETEA approval, including to
all Indian country in the State of Oklahoma other than the excluded
Indian country lands as described above.

IV. Final Action

EPA is taking final action to approve updates to the Oklahoma
NESHAP delegation so as to provide the ODEQ with the authority to
implement and enforce certain newly incorporated NESHAP promulgated by
the EPA and amendments to existing standards currently delegated, as
they existed through June 30, 2023.

V. Statutory and Executive Order Reviews

Under the CAA, the Administrator has the authority to approve
section 112(l) submissions that comply with the provisions of the Act
and applicable Federal regulations. In reviewing section 112(l)
submissions, the EPA's role is to approve State choices, provided that
they meet the criteria and objectives of the CAA and of the EPA's
implementing regulations. Accordingly, this action merely approves the
State's request as meeting Federal requirements and does not impose
additional requirements beyond those imposed by State law.
For this action, a review of all applicable Statutory and Executive
Orders are indicated as follows:

A. Executive Order 12866: Regulatory Planning and Review and Executive
Order 13563: Improving Regulation and Regulatory Review

This action is not a significant regulatory action as defined in
Executive Order 12866 (58 FR 51735, October 4, 1993) and was therefore
not submitted to the Office of Management and Budget (OMB) for review.

[[Page 54]]

B. Executive Order 14192: Unleashing Prosperity Through Deregulation

This action is not an Executive Order 14192 regulatory action
because this action is not significant under Executive Order 12866.

C. Paperwork Reduction Act (PRA)

This action does not impose an information collection burden under
the PRA (44 U.S.C. 3501 et seq.) because it does not contain any
information collection activities.

D. Regulatory Flexibility Act (RFA)

This action is certified to not have a significant economic impact
on a substantial number of small entities under the RFA (5 U.S.C. 601
et seq.). This action approves the delegation of federal rules as
requested by the state agency and will therefore have no net regulatory
burden for all directly regulated small entities.

E. Unfunded Mandates Reform Act (UMRA)

This action does not contain an unfunded mandate as described in
UMRA, 2 U.S.C. 1531-1538, and does not significantly or uniquely affect
small governments. This action imposes no enforceable duty on any
State, local, or Tribal governments or the private sector.

F. Executive Order 13132: Federalism

This action does not have federalism implications as specified in
Executive Order 13132 (64 FR 43255, August 10, 1999). It will not have
substantial direct effects on the states, on the relationship between
the national government and the states, or on the distribution of power
and responsibilities among the various levels of government.

G. Executive Order 13175: Consultation and Coordination With Indian
Tribal Governments

This approval of ODEQ's request to update their NESHAP delegation
will apply to certain areas of Indian country throughout Oklahoma as
discussed in the preamble, and therefore has Tribal implications as
specified in E.O. 13175 (65 FR 67249, November 9, 2000). However, this
action will neither impose substantial direct compliance costs on
federally recognized Tribal governments, nor preempt Tribal law. This
action will not impose substantial direct compliance costs on federally
recognized Tribal governments because no actions will be required of
Tribal governments. This action will also not preempt Tribal law as no
Oklahoma Tribe implements a regulatory program under the CAA, and thus
does not have applicable or related Tribal laws. Consistent with the
EPA Policy on Consultation and Coordination with Indian Tribes
(December 7, 2023), the EPA has offered consultation to all 38 Tribal
governments whose lands are located within the exterior boundaries of
the State of Oklahoma and that may be affected by this action and
provided information about this action.

H. Executive Order 13045: Protection of Children From Environmental
Health Risks and Safety Risks

The EPA interprets Executive Order 13045 as applying only to
regulatory actions considered significant under section 3(f)(1) of
Executive Order 12866 and that concern environmental health or safety
risks that EPA has reason to believe may disproportionately affect
children, per the definition of ``covered regulatory action'' in
section 2-202 of Executive Order 13045. This action is not subject to
Executive Order 13045 because it approves a state program.

I. Executive Order 13211: Actions Concerning Regulations That
Significantly Affect Energy Supply, Distribution or Use

This action is not subject to Executive Order 13211 (66 FR 28355,
May 22, 2001), because it is not a significant regulatory action under
Executive Order 12866.

J. National Technology Transfer and Advancement Act (NTTAA)

This rulemaking does not involve technical standards. This action
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 (CAA).

K. Congressional Review Act (CRA)

This action is subject to the CRA, 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 March 3, 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

40 CFR Part 61

Environmental protection, Air pollution control, Hazardous
substances, Intergovernmental relations, Radioactive materials,
Reporting and recordkeeping requirements, Uranium, Vinyl chloride.

40 CFR Part 63

Environmental protection, Air pollution control, Administrative
practice and procedure, Business and industry, Carbon oxides, Hazardous
substances, Intergovernmental relations, Nitrogen oxides, Ozone,
Reporting and recordkeeping requirements, Sulfur oxides, Volatile
organic compounds.

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

Dated: December 11, 2025.
James McDonald,
Director, Air and Radiation Division, Region 6.

For the reasons stated in the preamble, the Environmental
Protection Agency amends 40 CFR parts 61 and 63 as follows:

PART 61--NATIONAL EMISSON STANDARDS FOR HAZARDOUS AIR POLLUTANTS

0
1. The authority citation for part 61 continues to read as follows:

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

Subpart A--General Provisions

0
2. Section 61.04 is amended by revising paragraph (c)(6)(iv) to read as
follows:

Sec. 61.04 Address.

* * * * *
(c) * * *
(6) * * *
(iv) Oklahoma. The Oklahoma Department of Environmental Quality
(ODEQ) has been delegated the following part 61 standards promulgated
by EPA, as amended in the Federal Register through June 30, 2023. The
(X) symbol is used to indicate each subpart that has been delegated.

[[Page 55]]

Table 4 to Paragraph (c)(6)(iv)--Delegation Status for Part 61
Standards--State of Oklahoma
[Applies to sources located in certain areas of Indian country]
------------------------------------------------------------------------
Subpart Source category ODEQ
------------------------------------------------------------------------
A.................................. General Provisions...... X
B.................................. Radon Emissions From No
Underground Uranium
Mines.
C.................................. Beryllium............... X
D.................................. Beryllium Rocket Motor X
Firing.
E.................................. Mercury................. X
F.................................. Vinyl Chloride.......... X
G.................................. (Reserved).............. .........
H.................................. Emissions of No
Radionuclides Other
Than Radon From
Department of Energy
Facilities.
I.................................. Radionuclide Emissions No
From Federal Facilities
Other Than Nuclear
Regulatory Commission
Licensees and Not
Covered by subpart H.
J.................................. Equipment Leaks X
(Fugitive Emission
Sources) of Benzene.
K.................................. Radionuclide Emissions No
From Elemental
Phosphorus Plants.
L.................................. Benzene Emissions From X
Coke By-Product
Recovery Plants.
M.................................. Asbestos................ X
N.................................. Inorganic Arsenic X
Emissions From Glass
Manufacturing Plants.
O.................................. Inorganic Arsenic X
Emissions From Primary
Copper Smelters.
P.................................. Inorganic Arsenic X
Emissions From Arsenic
Trioxide and Metallic
Arsenic Production
Facilities.
Q.................................. Radon Emissions From No
Department of Energy
Facilities.
R.................................. Radon Emissions From No
Phosphogypsum Stacks.
S.................................. (Reserved).............. .........
T.................................. Radon Emissions From the No
Disposal of Uranium
Mill Tailings.
U.................................. (Reserved).............. .........
V.................................. Equipment Leaks X
(Fugitives Emission
Sources).
W.................................. Radon Emissions From No
Operating Mill Tailings.
X.................................. (Reserved).............. .........
Y.................................. Benzene Emissions From X
Benzene Storage Vessels.
Z-AA............................... (Reserved).............. .........
BB................................. Benzene Emissions From X
Benzene Transfer
Operations.
CC-EE.............................. (Reserved).............. .........
FF................................. Benzene Waste Operations X
Appendix A......................... Compliance Status X
Information.
Appendix B......................... Test Methods............ X
Appendix C......................... Quality Assurance X
Procedures.
Appendix D......................... Methods for Estimating No
Radionuclide Emissions.
Appendix E......................... Compliance Procedures No
Methods for Determining
Compliance With subpart
I.
------------------------------------------------------------------------

* * * * *

PART 63--NATIONAL EMISSION STANDARDS FOR HAZARDOUS AIR POLLUTANTS
FOR SOURCE CATEGORIES

0
3. The authority citation for part 63 continues to read as follows:

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

Subpart E--Approval of State Programs and Delegation of Federal
Authorities

0
4. Section 63.99 is amended by revising paragraph (a)(37)(i) to read as
follows:

Sec. 63.99 Delegated Federal authorities.

(a) * * *
(37) * * *
(i) The following table lists the specific part 63 standards that
have been delegated unchanged to the Oklahoma Department of
Environmental Quality for all sources. The ``X'' symbol is used to
indicate each subpart that has been delegated. The delegations are
subject to all of the conditions and limitations set forth in Federal
law, regulations, policy, guidance, and determinations. Some
authorities cannot be delegated and are retained by EPA. These include
certain General Provisions authorities and specific parts of some
standards. Any amendments made to these rules after June 30, 2023, are
not delegated.

Table 14 to Paragraph (a)(37)(i)--Delegation Status for Part 63
Standards--State of Oklahoma
[Applies to sources located in certain areas of Indian country]
------------------------------------------------------------------------
Subpart Source category ODEQ \1\
------------------------------------------------------------------------
A.................................. General Provisions...... X
B.................................. Requirements for Control X \2\
Technology
Determinations for
Major Sources in
Accordance with Clean
Air Act sections 112(g)
and 112(j).
C.................................. List of Hazardous Air No
Pollutants, Petitions
Process, Lesser
Quantity Designations,
Source Category List.
D.................................. Regulations Governing No
Compliance Extensions
for Early Reductions of
Hazardous Air
Pollutants.
E.................................. Approval of State No
Programs and Delegation
of Federal Authorities.
F.................................. Synthetic Organic X
Chemical Manufacturing
Industry (SOCMI).
G.................................. SOCMI for Process Vents, X
Storage Vessels,
Transfer Operations and
Wastewater.
H.................................. Equipment Leaks and X
Fenceline Monitoring
for All Emission
Sources.
I.................................. Certain Processes X
Subject to the
Negotiated Regulation
for Equipment Leaks.

[[Page 56]]

J.................................. Polyvinyl Chloride and (\3\)
Copolymers Production.
K.................................. (Reserved).............. .........
L.................................. Coke Oven Batteries..... X
M.................................. Perchloroethylene Air X
Emission Standards for
Dry Cleaning Facilities.
N.................................. Chromium Emissions from X
Hard and Decorative
Chromium Electroplating
and Chromium Anodizing
Tanks.
O.................................. Ethylene Oxide Emissions X
Standards for
Sterilization
Facilities.
P.................................. (Reserved).............. .........
Q.................................. Industrial Process X
Cooling Towers.
R.................................. Gasoline Distribution X
Facilities (Bulk
Gasoline Terminals and
Pipeline Breakout
Sessions).
S.................................. Pulp and Paper Industry. X
T.................................. Halogenated Solvent X
Cleaning.
U.................................. Group I Polymers and X
Resins.
V.................................. (Reserved).............. .........
W.................................. Epoxy Resins Production X
and Non-Nylon
Polyamides Production.
X.................................. Secondary Lead Smelting. X
Y.................................. Marine Tank Vessel X
Loading Operations.
Z.................................. (Reserved).............. .........
AA................................. Phosphoric Acid X
Manufacturing Plants.
BB................................. Phosphate Fertilizers X
Production Plants.
CC................................. Petroleum Refineries.... X
DD................................. Off-Site Waste and X
Recovery Operations.
EE................................. Magnetic Tape X
Manufacturing
Operations.
FF................................. (Reserved).............. .........
GG................................. Aerospace Manufacturing X
and Rework Facilities.
HH................................. Oil and Natural Gas X
Production Facilities.
II................................. Shipbuilding and Ship X
Repair (Surface
Coating).
JJ................................. Wood Furniture X
Manufacturing
Operations.
KK................................. Printing and Publishing X
Industry.
LL................................. Primary Aluminum X
Reduction Plants.
MM................................. Chemical Recovery X
Combustion Sources at
Kraft, Soda, Sulfite,
and Stand-Alone
Semichemical Pulp Mills.
NN................................. Wool Fiberglass X
Manufacturing at Area
Sources.
OO................................. Tanks--Level 1.......... X
PP................................. Containers.............. X
QQ................................. Surface Impoundments.... X
RR................................. Individual Drain Systems X
SS................................. Closed Vent Systems, X
Control Devices,
Recovery Devices and
Routing to a Fuel Gas
System or a Process.
TT................................. Equipment Leaks--Control X
Level 1.
UU................................. Equipment Leaks--Control X
Level 2 Standards.
VV................................. Oil-Water Separators and X
Organic-Water
Separators.
WW................................. Storage Vessels (Tanks)-- X
Control Level 2.
XX................................. Ethylene Manufacturing X
Process Units: Heat
Exchange Systems and
Waste Operations.
YY................................. Generic Maximum X
Achievable Control
Technology Standards.
ZZ-BBB............................. (Reserved).............. .........
CCC................................ Steel Pickling--HCl X
Process Facilities and
Hydrochloric Acid
Regeneration Plants.
DDD................................ Mineral Wool Production. X
EEE................................ Hazardous Waste X
Combustors.
FFF................................ (Reserved).............. .........
GGG................................ Pharmaceuticals X
Production.
HHH................................ Natural Gas Transmission X
and Storage Facilities.
III................................ Flexible Polyurethane X
Foam Production.
JJJ................................ Group IV Polymers and X
Resins.
KKK................................ (Reserved).............. .........
LLL................................ Portland Cement X
Manufacturing Industry.
MMM................................ Pesticide Active X
Ingredient Production.
NNN................................ Wool Fiberglass X
Manufacturing.
OOO................................ Manufacture of Amino/ X
Phenolic Resins.
PPP................................ Polyether Polyols X
Production.
QQQ................................ Primary Copper Smelting. X
RRR................................ Secondary Aluminum X
Production.
SSS................................ (Reserved).............. .........
TTT................................ Primary Lead Smelting... X
UUU................................ Petroleum Refineries: X
Catalytic Cracking
Units, Catalytic
Reforming Units, and
Sulfur Recovery Plants.
VVV................................ Publicly Owned Treatment X
Works.
WWW................................ (Reserved).............. .........
XXX................................ Ferroalloys Production: X
Ferromanganese and
Silicomanganese.
AAAA............................... Municipal Solid Waste X
Landfills.

[[Page 57]]

BBBB............................... (Reserved).............. .........
CCCC............................... Nutritional Yeast X
Manufacturing.
DDDD............................... Plywood and Composite X \4\
Wood Products.
EEEE............................... Organic Liquids X
Distribution (Non-
Gasoline).
FFFF............................... Miscellaneous Organic X
Chemical Manufacturing.
GGGG............................... Solvent Extraction for X
Vegetable Oil
Production.
HHHH............................... Wet-Formed Fiberglass X
Mat Production.
IIII............................... Surface Coating of X
Automobiles and Light-
Duty Trucks.
JJJJ............................... Paper and other Web X
Coating.
KKKK............................... Surface Coating of Metal X
Cans.
MMMM............................... Surface Coating of X
Miscellaneous Metal
Parts and Products.
NNNN............................... Surface Coating of Large X
Appliances.
OOOO............................... Printing, Coating, and X
Dyeing of Fabrics and
Other Textiles.
PPPP............................... Surface Coating of X
Plastic Parts and
Products.
QQQQ............................... Surface Coating of Wood X
Building Products.
RRRR............................... Surface Coating of Metal X
Furniture.
SSSS............................... Surface Coating for X
Metal Coil.
TTTT............................... Leather Finishing X
Operations.
UUUU............................... Cellulose Products X
Manufacturing.
VVVV............................... Boat Manufacturing...... X
WWWW............................... Reinforced Plastic X
Composites Production.
XXXX............................... Rubber Tire X
Manufacturing.
YYYY............................... Stationary Combustion X
Turbines.
ZZZZ............................... Stationary Reciprocating X
Internal Combustion
Engines.
AAAAA.............................. Lime Manufacturing X
Plants.
BBBBB.............................. Semiconductor X
Manufacturing.
CCCCC.............................. Coke Ovens: Pushing, X
Quenching and Battery
Stacks.
DDDDD.............................. Industrial, Commercial, X \5\
and Institutional
Boilers and Process
Heaters.
EEEEE.............................. Iron and Steel Foundries X
FFFFF.............................. Integrated Iron and X
Steel Manufacturing
Facilities.
GGGGG.............................. Site Remediation........ X
HHHHH.............................. Miscellaneous Coating X
Manufacturing.
IIIII.............................. Mercury Cell Chlor- X
Alkali Plants.
JJJJJ.............................. Brick and Structural X \6\
Clay Products
Manufacturing.
KKKKK.............................. Clay Ceramics X \6\
Manufacturing.
LLLLL.............................. Asphalt Processing and X
Asphalt Roofing
Manufacturing.
MMMMM.............................. Flexible Polyurethane X
Foam Fabrication
Operation.
NNNNN.............................. Hydrochloric Acid X
Production.
OOOOO.............................. (Reserved).............. .........
PPPPP.............................. Engine Test Cells/Stands X
QQQQQ.............................. Friction Materials X
Manufacturing
Facilities.
RRRRR.............................. Taconite Iron Ore X
Processing.
SSSSS.............................. Refractory Products X
Manufacturing.
TTTTT.............................. Primary Magnesium X
Refining.
UUUUU.............................. Coal and Oil-Fired X \7\
Electric Utility Steam
Generating Units.
VVVVV.............................. (Reserved).............. .........
WWWWW.............................. Hospital Ethylene Oxide X
Sterilizers.
XXXXX.............................. (Reserved).............. .........
YYYYY.............................. Area Sources: Electric X
Arc Furnace Steelmaking
Sources.
ZZZZZ.............................. Iron and Steel Foundries X
Area Sources.
AAAAAA............................. (Reserved).............. .........
BBBBBB............................. Gasoline Distribution X
Bulk Terminals, Bulk
Plants, and Pipeline
Facilities.
CCCCCC............................. Gasoline Dispensing X
Facilities.
DDDDDD............................. Polyvinyl Chloride and X
Copolymers Production
Area Sources.
EEEEEE............................. Primary Copper Smelting X
Area Sources.
FFFFFF............................. Secondary Copper X
Smelting Area Sources.
GGGGGG............................. Primary Nonferrous X
Metals Area Sources:
Zinc, Cadmium, and
Beryllium.
HHHHHH............................. Paint Stripping and X
Miscellaneous Surface
Coating Operations at
Area Sources.
IIIIII............................. (Reserved).............. .........
JJJJJJ............................. Industrial, Commercial, X
and Institutional
Boilers Area Sources.
KKKKKK............................. (Reserved).............. .........
LLLLLL............................. Acrylic and Modacrylic X
Fibers Production Area
Sources.
MMMMMM............................. Carbon Black Production X
Area Sources.
NNNNNN............................. Chemical Manufacturing X
Area Sources: Chromium
Compounds.
OOOOOO............................. Flexible Polyurethane X
Foam Production and
Fabrication Area
Sources.
PPPPPP............................. Lead Acid Battery X
Manufacturing Area
Sources.
QQQQQQ............................. Wood Preserving Area X
Sources.
RRRRRR............................. Clay Ceramics X
Manufacturing Area
Sources.
SSSSSS............................. Glass Manufacturing Area X
Sources.

[[Page 58]]

TTTTTT............................. Secondary Nonferrous X
Metals Processing Area
Sources.
UUUUUU............................. (Reserved).............. .........
VVVVVV............................. Chemical Manufacturing X
Area Sources.
WWWWWW............................. Area Source Standards X
for Plating and
Polishing Operations.
XXXXXX............................. Area Source Standards X
for Nine Metal
Fabrication and
Finishing Source
Categories.
YYYYYY............................. Area Sources: X
Ferroalloys Production
Facilities.
ZZZZZZ............................. Area Source Standards X
for Aluminum, Copper,
and Other Nonferrous
Foundries.
AAAAAAA............................ Area Sources: Asphalt X
Processing and Asphalt
Roofing Manufacturing.
BBBBBBB............................ Area Sources: Chemical X
Preparation Industry.
CCCCCCC............................ Area Sources: Paints and X
Allied Products
Manufacturing.
DDDDDDD............................ Prepared Feeds Areas X
Sources.
EEEEEEE............................ Gold Mine Ore Processing X
and Production Area
Source Category.
FFFFFFF-GGGGGGG.................... (Reserved).............. .........
HHHHHHH............................ Polyvinyl Chloride and X
Copolymers Production
Major Sources.
Appendix A......................... Test Methods............ X
Appendix B......................... Sources Defined by X
Rarely Reduction
Provisions.
Appendix C......................... Determination of the X
Fraction Biodegraded
(Fbio) in a Biological
Treatment Unit.
Appendix D......................... Alternative Validation X
Procedure for EPA Waste
and Wastewater Methods.
Appendix E......................... Monitoring Procedure for X
Nonthoroughly Mixed
Open Biological
Treatment Systems at
Kraft Pulp Mills Under
Unsafe Sampling
Conditions.
------------------------------------------------------------------------
\1\ Authorities which may not be delegated include: Sec. 63.6(g),
Approval of Alternative Non-Opacity Emission Standards; Sec.
63.6(h)(9), Approval of Alternative Opacity Standards; Sec.
63.7(e)(2)(ii) and (f), Approval of Major Alternatives to Test
Methods; Sec. 63.8(f), Approval of Major Alternatives to Monitoring;
Sec. 63.10(f), Approval of Major Alternatives to Recordkeeping and
Reporting; and all authorities identified in the subparts (e.g., under
``Delegation of Authority'') that cannot be delegated.
\2\ Sections 63.41, 63.43, and 63.44 only of subpart B.
\3\ The ODEQ has adopted the subpart unchanged and applied for
delegation of the standard. The subpart was vacated and remanded to
EPA by the United States Court of Appeals for the District of Columbia
Circuit. See, Mossville Environmental Action Network v. EPA, 370 F. 3d
1232 (D.C. Cir. 2004). Because of the D.C. Court's holding this
subpart is not delegated to ODEQ at this time.
\4\ This subpart was issued a partial vacatur by the United States Court
of Appeals for the District of Columbia Circuit. See 72 FR 61060
(October 29, 2007).
\5\ Final rule. See 76 FR 15608 (March 21, 2011), as amended at 78 FR
7138 (January 31, 2013); 80 FR 72807 (November 20, 2015).
\6\ Final promulgated rule adopted by the EPA. See 80 FR 65470 (October
26, 2015). Note that subpart 63 KKKKK was amended to correct minor
typographical errors at 80 FR 75817 (December 4, 2015).
\7\ Final Rule. See 77 FR 9304 (February 16, 2012), as amended 81 FR
20172 (April 6, 2016) Final Supplemental Finding that it is
appropriate and necessary to regulate HAP emissions from Coal- and Oil-
fired EUSGU Units. See 81 FR 24420 (April 25, 2016).

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[FR Doc. 2025-24149 Filed 12-31-25; 8:45 am]
BILLING CODE 6560-50-P

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National Emission Standards for Hazardous Air Pollutants; Delegation of Authority to Oklahoma

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