[Federal Register Volume 90, Number 127 (Monday, July 7, 2025)]
[Proposed Rules]
[Pages 29826-29828]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2025-12520]


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ENVIRONMENTAL PROTECTION AGENCY

40 CFR Part 60

[EPA-R06-OAR-2010-0580; FRL-12826-01-R6]


New Source Performance Standards; Delegation of Authority to 
Oklahoma

AGENCY: Environmental Protection Agency (EPA).

ACTION: Proposed rule; notice of delegation.

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SUMMARY: The Environmental Protection Agency (EPA) is proposing to 
update federal regulations to reflect Oklahoma's current New Source 
Performance Standards (NSPS) delegation status and the mailing address 
for the Oklahoma Department of Environmental Quality (ODEQ). The ODEQ 
has submitted updated regulations for the delegation of EPA authority 
for implementation and enforcement of certain NSPS. The updated State 
regulations incorporate by reference certain NSPS promulgated by EPA, 
as they existed through June 30, 2023. The delegation of authority for 
implementation and enforcement applies to sources subject to the 
delegated NSPS, including those located in certain areas of Indian 
country as discussed herein.

DATES: Written comments on this proposed rule must be received on or 
before August 6, 2025.

ADDRESSES: Submit your comments, identified by Docket ID No. EPA-R06-
OAR-2010-0580, at https://www.regulations.gov or via email to 
[email protected]. Follow the online instructions for submitting 
comments. Once submitted, comments cannot be edited or removed from 
Regulations.gov. The EPA may publish any comment received to its public 
docket. Do not submit electronically any information you consider to be 
Confidential Business Information (CBI) 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. The 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 Clovis Steib, (214) 665-
7566; email: [email protected]. For the full EPA public comment 
policy, information about CBI or multimedia submissions, and general 
guidance on making effective comments, please visit https://www.epa.gov/dockets/commenting-epa-dockets.
    Docket: The index to the docket for this action is available 
electronically at www.regulations.gov. While all documents in the 
docket are listed in the index, some information may not be publicly 
available due to docket file size restrictions or content (e.g., CBI).

FOR FURTHER INFORMATION CONTACT: Clovis Steib, EPA Region 6 Office, 
Infrastructure and Ozone Section, 214-665-7566, [email protected]. 
We encourage the public to submit comments via https://www.regulations.gov. Please call or email the contact listed above if 
you need alternative access to material indexed but not provided in the 
docket.

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

I. Background

    Section 111(c)(1) of the Clean Air Act (CAA), 42 U.S.C. 7411(c)(1), 
authorizes EPA to delegate to a state the authority to implement and 
enforce NSPS promulgated by EPA under CAA section 111(b) and codified 
at part 60 of title 40 of the Code of Federal Regulations (CFR). CAA 
section 111(c)(2) states that EPA retains the authority to enforce any 
applicable NSPS delegated to a state. On March 25, 1982, EPA approved 
the delegation of authority to implement and enforce NSPS to Oklahoma 
(1982 NSPS Delegation). See 47 FR 1785 (April 22, 1982). On October 8, 
1999, EPA updated Oklahoma's NSPS delegation, including specific 
provisions setting forth the terms and conditions of the delegation of 
authority for NSPS responsibility to the ODEQ (1999 NSPS Delegation). 
See 64 FR 57392 (October 25, 1999). Copies of the initial 1982 NSPS 
Delegation and the 1999 NSPS Delegation update are included in the 
docket for this action, both of which contain provisions specifying 
conditions and limitations applicable to the EPA's delegation of 
authority to implement and enforce the NSPS in Oklahoma.
    Under the terms and conditions of the 1999 NSPS Delegation, 
``[f]uture provisions of 40 CFR part 60 shall be delegated to ODEQ 
pursuant to this agreement provided that (1) ODEQ requests delegation 
and provides copies of the proposed or adopted rules, (2) ODEQ adopts 
the federal standard without change (e.g., incorporation by reference) 
and (3) EPA does not object to the delegation within thirty (30) days 
of ODEQ's request.'' See Specific Provision 1 of the 1999 NSPS 
Delegation.

II. ODEQ's October 28, 2024 NSPS Delegation Update

    By letter dated October 28, 2024, the ODEQ requested an update to 
its NSPS delegation. ODEQ reaffirmed that it retains all required 
authorities set forth in 40 CFR 60.4 for delegation of a CAA section 
111(c) program and all authority identified in the 1982 and 1999 NSPS 
Delegations. ODEQ provided copies of the duly adopted state regulations 
which incorporate specifically identified NSPS found at 40 CFR part 60 
into the Oklahoma Administrative Code (OAC) 252:100-2 and OAC 252:100 
Appendix Q, as published in the Oklahoma Register on August 15, 2024 
(41 Okla. Reg. 2006) with an effective date of September 16, 2024.\1\ 
These ODEQ regulations are, therefore, at least as stringent as the 
EPA's rules. See 40 CFR 60.10(a). ODEQ's October 28, 2024, request 
included the following NSPS in 40 CFR part 60, as they existed through 
June 30, 2023: 40 CFR part 60, subparts A (except sections 60.4, 60.9, 
60.10, and 60.16), D, Da, Db, Dc, E, Ea, Eb, Ec, F, G, Ga, H, I, J, Ja, 
K, Ka, Kb, L, M, N, Na, O, P, Q, R, S, T, U, V, W, X, Y, Z, AA, AAa, 
BB, BBa, CC, DD, EE, GG, HH, KK, KKa, LL, MM, MMa, NN, PP, QQ, RR, SS, 
TT, UU, VV, VVa, WW, XX, BBB, DDD, FFF, GGG, GGGa, HHH, III, JJJ, KKK, 
LLL, NNN, OOO, PPP, QQQ, RRR, SSS, TTT, TTTa, UUU, VVV, WWW, XXX, AAAA, 
CCCC, EEEE, IIII, JJJJ, KKKK, LLLL, OOOO, OOOOa, TTTT, and Appendices A 
and B to 40 CFR part 60.\2\ In accordance with the authority provided 
by CAA section 111(c)(1) and consistent with the provisions of the 1982 
NSPS Delegation and the 1999

[[Page 29827]]

NSPS Delegation, EPA has determined that the ODEQ has met the 
conditions required for approval of the ODEQ's requested update to its 
NSPS delegation, as described above. All authorities not affirmatively 
and expressly requested by the ODEQ are not delegated. In addition, the 
provisions and conditions contained in the 1982 and 1999 NSPS 
Delegations remain in effect, with the exception of Specific Provision 
7 of the 1999 NSPS Delegation. As more fully discussed in Section III 
of this document, the delegation to ODEQ to implement and enforce 
certain NSPS extends to sources or activities located in certain areas 
of Indian country, as defined in 18 U.S.C. 1151.
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    \1\ The ODEQ previously submitted requests to EPA for updates to 
the Oklahoma NSPS delegation, by letters dated August 23, 2012, 
March 17, 2015, November 2, 2016, June 6, 2018 (revised with a 
subsequent June 29, 2018 letter), December 23, 2019, March 23, 2021 
(revised with a subsequent September 14, 2021 email), December 2, 
2021 (revised with a subsequent October 17, 2022 letter), October 
17, 2022, and November 30, 2023. EPA has determined that such 
requests meet the requirements of the CAA and the 1982 and 1999 NSPS 
Delegations concerning the approval of EPA's delegation of authority 
for the enforcement and implementation of the NSPS in Oklahoma. EPA 
previously proposed an action on ODEQ's request to update its NSPS 
delegation (85 FR 31423, May 26, 2020); that proposed action is 
subsumed and incorporated into this proposed action.
    \2\ See EPA Docket No. EPA-R06-OAR-2010-0580 in 
www.regulations.gov.
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    Furthermore, no authorities are delegated that require rulemaking 
in the Federal Register to implement, or where Federal overview is the 
only way to ensure national consistency in the application of the 
standards. All inquiries and requests concerning implementation and 
enforcement of the excluded standards in the State of Oklahoma should 
be directed to the EPA Region 6 Office of Enforcement and Compliance 
Assurance. Furthermore, the EPA retains any authority in an individual 
NSPS that may not be delegated according to provisions of the standard. 
Finally, EPA retains the authorities stated in the 1982 and 1999 NSPS 
Delegations.

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. In addition, the State only sought approval to the extent that 
such approval was necessary for the State to administer a program in 
light of Oklahoma Dept. of Environmental Quality v. EPA, 740 F.3d 185 
(D.C. Cir. 2014).\3\
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    \3\ In ODEQ v. EPA, the D.C. Circuit held that under the CAA, 
states have the authority to implement a SIP in non-reservation 
areas of Indian country in the state, unless there has been a 
demonstration of tribal jurisdiction. Under the D.C. Circuit's 
decision, the CAA does not provide authority to states to implement 
SIPs in Indian reservations.
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    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, 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.\4\ 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).
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    \4\ The EPA's prior approvals relating to Oklahoma's SIP 
frequently noted that the SIP was not approved to apply in areas of 
Indian country (except as explained in the D.C. Circuit's decision 
in ODEQ v. EPA) located in the State. See, e.g., 85 FR 20178, 20180 
(April 10, 2020). Such prior expressed limitations are superseded by 
the EPA's approval of Oklahoma's SAFETEA request.
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    As explained above, the EPA is proposing to amend 40 CFR part 60, 
to reflect the current status of EPA's delegation of authority to ODEQ 
for the implementation and enforcement of the NSPS and to update ODEQ's 
mailing address. Consistent with the D.C. Circuit's decision in ODEQ v. 
EPA and with the EPA's SAFETEA approval, these SIP revisions will apply 
to areas of Indian country as follows: (1) pursuant to the SAFETEA 
approval, the SIP revisions will apply to all Indian country in the 
State of Oklahoma other than the excluded Indian country lands as 
described above; and (2) pursuant to the D.C. Circuit's decision in 
ODEQ v. EPA, the SIP revisions will also apply to any Indian allotments 
or dependent Indian communities that are located outside of any Indian 
reservation and over which there has been no demonstration of tribal 
authority.

IV. Proposed Action

    Apart from the notification of the updated NSPS delegation to the 
ODEQ as discussed above, EPA is proposing to amend 40 CFR part 60 to 
include a table of the specific NSPS provisions delegated to the ODEQ 
and update the mailing address for the ODEQ. If finalized as proposed, 
40 CFR 60.4(b)(38) will be amended to read: State of Oklahoma: State of 
Oklahoma, Department of Environmental Quality, Air Quality Division, 
P.O. Box 1677, Oklahoma City, OK 73101-1677, and a table will be added 
to 40 CFR 60.4(e) reflecting the NSPS subparts currently delegated to 
ODEQ.

V. Statutory and Executive Order Reviews

    Under the CAA, EPA previously delegated to the ODEQ the authority 
to implement and enforce certain NSPS for sources located in Oklahoma, 
as provided for under 42 U.S.C. 7411(c)(1); see also 40 CFR 60.4(b). 
Pursuant the terms and conditions of that delegation, this action 
informs the public that EPA has found the ODEQ's October 28, 2024, 
request to update the delegation status for NSPS meets Federal 
requirements and does not impose additional requirements beyond those 
imposed by state law. Through this action, EPA is proposing to add a 
table to 40 CFR part 60 listing the specific NSPS currently delegated 
to the ODEQ and update the ODEQ's address for submittal of documents 
required under the delegated NSPS provisions. For these reasons, this 
action:
     Is not a ``significant regulatory action'' subject to 
review by the Office of Management and Budget under Executive Orders 
12866 (58 FR 51735, October 4, 1993;
     Is not subject to Executive Order 14192 (90 FR 9065, 
February 6, 2025) because NSPS actions are exempt from review under 
Executive Order 12866;
     Does not impose an information collection burden under the 
provisions of the Paperwork Reduction Act (44 U.S.C. 3501 et seq.);
     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.);
     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);
     Does not have federalism implications as specified in 
Executive Order 13132 (64 FR 43255, August 10, 1999);

[[Page 29828]]

     Is not a significant regulatory action subject to 
Executive Order 13211 (66 FR 28355, May 22, 2001);
     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.

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

    This amended proposed action will apply, if finalized as proposed, 
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 with Indian Tribes (December 7, 2023), the 
EPA has offered consultation to tribal governments that may be affected 
by this action and provided information about this action.

List of Subjects in 40 CFR Part 60

    Environmental protection, Administrative practice and procedure, 
Air pollution control, Intergovernmental relations, Reporting and 
recordkeeping requirements.

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

    Dated: June 26, 2025.
James McDonald,
Director, Air & Radiation Division, Region 6.
[FR Doc. 2025-12520 Filed 7-3-25; 8:45 am]
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