Rule2025-08727
Air Plan Approval; Michigan; Attainment Plan for the Detroit 2010 Sulfur Dioxide Nonattainment Area
Primary source
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Published
May 19, 2025
Effective
June 18, 2025
Issuing agencies
Environmental Protection Agency
Abstract
The Environmental Protection Agency (EPA) is approving the State Implementation Plan (SIP) revision submitted by Michigan on December 20, 2022, and supplemented on February 21, 2023, December 14, 2023, and April 2, 2024, which amends a SIP submission previously submitted to EPA on May 31, 2016, and June 30, 2016, for attaining the 2010 sulfur dioxide (SO<INF>2</INF>) primary national ambient air quality standard (NAAQS) for the Detroit SO<INF>2</INF> nonattainment area. This action follows a prior action which found that Michigan had satisfied emission inventory and new source review (NSR) requirements for this area but had not met requirements under the Clean Air Act (CAA) for the elements that EPA is approving here. This action also follows the promulgation of the 2022 Federal Implementation Plan (FIP) for the Detroit SO<INF>2</INF> nonattainment area.
Full Text
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<title>Federal Register, Volume 90 Issue 95 (Monday, May 19, 2025)</title>
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[Federal Register Volume 90, Number 95 (Monday, May 19, 2025)]
[Rules and Regulations]
[Pages 21228-21232]
From the Federal Register Online via the Government Publishing Office [<a href="http://www.gpo.gov">www.gpo.gov</a>]
[FR Doc No: 2025-08727]
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ENVIRONMENTAL PROTECTION AGENCY
40 CFR Part 52
[EPA-R05-OAR-2022-0976; FRL-10788-02-R5]
Air Plan Approval; Michigan; Attainment Plan for the Detroit 2010
Sulfur Dioxide Nonattainment Area
AGENCY: Environmental Protection Agency (EPA).
ACTION: Final rule.
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SUMMARY: The Environmental Protection Agency (EPA) is approving the
State Implementation Plan (SIP) revision submitted by Michigan on
December 20, 2022, and supplemented on February 21, 2023, December 14,
2023, and April 2, 2024, which amends a SIP submission previously
submitted to EPA on May 31, 2016, and June 30, 2016, for attaining the
2010 sulfur dioxide (SO<INF>2</INF>) primary national ambient air
quality standard (NAAQS) for the Detroit SO<INF>2</INF> nonattainment
area. This action follows a prior action which found that Michigan had
satisfied emission inventory and new source review (NSR) requirements
for this area but had not met requirements under the Clean Air Act
(CAA) for the elements that EPA is approving here. This action also
follows the promulgation of the 2022 Federal Implementation Plan (FIP)
for the Detroit SO<INF>2</INF> nonattainment area.
DATES: This final rule is effective on June 18, 2025.
ADDRESSES: EPA has established a docket for this action under Docket ID
No. EPA-R05-OAR-2022-0976. 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, i.e., Confidential Business
Information (CBI), Proprietary Business Information (PBI), 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 either through <a href="https://www.regulations.gov">https://www.regulations.gov</a> or at the Environmental Protection Agency, Region
5, Air and Radiation Division, 77 West Jackson Boulevard, Chicago,
Illinois 60604. This facility is open from 8:30 a.m. to 4:30 p.m.,
Monday through Friday, excluding Federal holidays. We recommend that
you telephone Abigail Teener, Environmental Protection Specialist, at
(312) 353-7314 before visiting the Region 5 office.
FOR FURTHER INFORMATION CONTACT: Abigail Teener, Air and Radiation
Division (AR18J), Environmental Protection Agency, Region 5, 77 West
Jackson Boulevard, Chicago, Illinois 60604, (312) 353-7314,
<a href="/cdn-cgi/l/email-protection#235746464d46510d42414a44424a4f634653420d444c55"><span class="__cf_email__" data-cfemail="e6928383888394c887848f81878f8aa6839687c8818990">[email protected]</span></a>.
SUPPLEMENTARY INFORMATION:
I. Background Information
On August 5, 2013 (78 FR 47191), EPA designated the Detroit area
within the State of Michigan as nonattainment for the 2010
SO<INF>2</INF> NAAQS, in conjunction with designating multiple areas in
other states as nonattainment.
On March 18, 2016 (81 FR 14736), EPA published an action finding
that Michigan had failed to submit the required SO<INF>2</INF>
nonattainment plan by the submittal deadline. This finding initiated
deadlines under CAA section 179(a) for the potential imposition of 2-
to-1 NSR offset and Federal highway funding sanctions. Additionally,
under CAA section 110(c), the finding triggered a requirement that EPA
promulgate a FIP within two years of the finding unless, by that time,
(a) the State had made the necessary complete submittal, and (b) EPA
had approved the submittal as meeting applicable requirements.
On May 31, 2016, Michigan submitted a Detroit SO<INF>2</INF>
attainment plan and on June 30, 2016, submitted associated final
enforceable measures. Michigan's submission of a complete attainment
plan terminated the deadlines for imposing sanctions, pursuant to 40
CFR 52.31(d)(5), but it did not terminate EPA's FIP obligation.
[[Page 21229]]
On March 19, 2021 (86 FR 14827), EPA partially approved and
partially disapproved Michigan's SO<INF>2</INF> plan as submitted in
2016. EPA's March 19, 2021, action approved the enforceable control
measures for two facilities, approved the base-year emissions
inventory, and affirmed that the NSR requirements for the area had
previously been met on December 16, 2013 (78 FR 76064). In the same
March 19, 2021, action, EPA disapproved the attainment demonstration,
as well as the requirements for meeting reasonable further progress
(RFP) toward attainment of the NAAQS, reasonably available control
measures/reasonably available control technology (RACM/RACT), and
contingency measures. Additionally, EPA disapproved the plan's control
measures for two facilities as insufficient to demonstrate attainment.
These disapprovals started new sanctions clocks under CAA section
179(a).
On January 28, 2022 (87 FR 4501), EPA issued a finding of failure
to attain for the Detroit SO<INF>2</INF> nonattainment area,
determining that the area failed to attain the 2010 SO<INF>2</INF>
NAAQS by the applicable attainment date of October 4, 2018, and
established a requirement that Michigan submit a revised SIP by January
30, 2023, that provides for expeditious attainment of the NAAQS within
the time period specified in CAA sections 179(d)(3) and 172(a)(2).
On October 12, 2022 (87 FR 61514), EPA promulgated a FIP for the
Detroit SO<INF>2</INF> nonattainment area, which satisfied EPA's duty
to promulgate a FIP for the area under CAA section 110(c) that resulted
from the March 18, 2016, finding of failure to submit. While EPA's FIP
for the Detroit area met the requirements for SO<INF>2</INF>
nonattainment area plans, the FIP did not relieve Michigan of the
previously discussed CAA requirement to submit a plan that provides for
attainment of the 2010 SO<INF>2</INF> NAAQS for the Detroit
nonattainment area. On December 20, 2022, Michigan submitted a revised
attainment plan for the Detroit SO<INF>2</INF> nonattainment area
mirroring EPA's FIP in order to remedy Michigan's 2016 plan
deficiencies specified in EPA's March 19, 2021, rulemaking partially
approving and partially disapproving Michigan's SIP.
Michigan's revised plan, as submitted on December 20, 2022,
depended, in part, upon permits that had not yet been issued but would
include limits and associated requirements for the United States Steel
Corporation (U.S. Steel), EES Coke Battery (EES Coke), and Dearborn
Industrial Generation (DIG) facilities that are no less stringent than
those set forth in EPA's FIP, codified at 40 CFR 52.1189. On February
21, 2023, Michigan submitted a clarification letter committing to
submit the necessary permits by April 30, 2024. On March 23, 2023 (88
FR 17488), EPA proposed to conditionally approve Michigan's plan,
conditioned upon the issuance of and submission for incorporation into
the SIP the applicable permits for the U.S. Steel, EES Coke, and DIG
facilities. Also on March 23, 2023 (88 FR 17376), EPA issued an interim
final determination to stay and defer sanctions in the Detroit
SO<INF>2</INF> nonattainment area based on EPA's proposed conditional
approval. In this final action, EPA is finalizing the determination
that the conditions articulated in 40 CFR 52.31(d) have been met,
thereby terminating the sanctions clocks resulting from EPA's March 19,
2021, partial disapproval of the prior SIP.
On December 14, 2023, the State submitted three applicable permits
for the U.S. Steel, EES Coke, and DIG facilities. On April 2, 2024, the
State submitted the final applicable permit for the DIG facility, along
with a request that EPA approve its revised plan. On April 29, 2024,
EPA issued a completeness letter, included in the docket for this
action, determining that Michigan's submittal had satisfied the
completeness criteria set forth at 40 CFR part 51, appendix V and met
the requirement for a SIP submittal that provides for expeditious
attainment set forth in EPA's January 28, 2022, finding of failure to
attain.
EPA published a notice of proposed rulemaking on October 3, 2024
(89 FR 80439), proposing to approve Michigan's revised SIP submission,
which the State submitted to EPA on December 20, 2022, and supplemented
on February 21, 2023, December 14, 2023, and April 2, 2024, for
attaining the 2010 SO<INF>2</INF> NAAQS for the Detroit area and for
meeting other nonattainment area planning requirements of CAA sections
110, 172, 179 and 192. EPA proposed approval of Michigan's
demonstration that these requirements provide for attainment of the
2010 SO<INF>2</INF> NAAQS in Detroit. Finally, EPA proposed approval of
the other applicable requirements for nonattainment areas, including
requirements for RACM/RACT, RFP, and contingency measures. The proposal
followed a previous action in which EPA approved emissions inventories
for the Detroit area and nonattainment area NSR.
II. Public Comments
EPA received one adverse comment and one partially adverse comment
during the comment period on the proposed action. The adverse comments
are summarized below along with EPA's responses.
Comment: The commenter expresses concern with the compliance
timelines, particularly for the U.S. Steel Boilerhouse 2 stack
construction, and urges EPA and Michigan to accelerate the timelines.
Response: All compliance dates included in Michigan's plan have
passed. The latest compliance date was for U.S. Steel Boilerhouse 2 on
November 14, 2024, which allowed 90 days for the owner or operator to
submit a construction permit application to the State of Michigan, as
well as time for the State of Michigan to issue the permit, the owner
or operator to send out requests for proposal and award a construction
contract and procure materials, and for completion of construction. EES
Coke, the current operator of U.S. Steel Boilerhouse 2, commenced
operation of Boilerhouse 2 using the newly constructed stack and a
continuous emissions monitoring system (CEMS) on October 25, 2024,
ahead of the November 14, 2024, deadline. The notification of
completion of installation of the Boilerhouse 2 stack is included in
the docket for this action.
Comment: The commenter states that Michigan and EPA have
significantly delayed SO<INF>2</INF> attainment in the Detroit area
since the promulgation of the 2010 SO<INF>2</INF> NAAQS. As the FIP was
promulgated in 2022 and new technology was not considered in Michigan's
plan, the commenter contends that Michigan adopting the requirements
set forth in EPA's FIP is insufficient to fulfill the RACM/RACT
requirement. The commenter states that the RACM/RACT requirement is
particularly important for SO<INF>2,</INF> as SO<INF>2</INF> pollution
is driven primarily by emissions from industrial facilities, unlike
other pollutants such as ozone and particulate matter, and argues that
Michigan and EPA have not shown that the emission limits included in
Michigan's plan continue to qualify as RACM/RACT. The commenter states
that recent advancements in technology could result in additional
SO<INF>2</INF> reductions. The commenter also states that Michigan has
not shown that the requirements set forth in EPA's FIP will continue to
result in attainment of the SO<INF>2</INF> NAAQS. As EPA's modeling
relies on meteorological data from 2016-2020, the commenter contends
that Michigan must update the modeling with more recent meteorological
data to account for any changes. The commenter urges EPA to disapprove
Michigan's SIP submission and require that Michigan resubmit with an
updated control
[[Page 21230]]
technology analysis and updated attainment modeling.
Additionally, the commenter contends that EPA approval of
Michigan's plan would only address Michigan's requirement to submit an
attainment plan following the 2013 nonattainment designation and would
not address Michigan's requirement to submit a revised plan for the
Detroit area following EPA's 2022 finding of failure to attain by the
applicable attainment date. The commenter argues that under CAA section
179(d), the finding of failure to attain requires a SIP submission that
addresses additional measures beyond the general nonattainment SIP
requirements, ``including all measures that can be feasibly implemented
in the area in light of technological achievability, costs, and any
non-air quality and other air quality-related health and environmental
impacts.'' The commenter argues that such additional measures should
include an updated analysis of technologies that would reduce
SO<INF>2</INF> emissions as well as an examination of whether there are
additional RACM/RACT control requirements that should apply or other
additional control measures that would further reduce SO<INF>2</INF>
emissions. To fulfill its requirements under CAA section 179(d), the
commenter suggests that Michigan consider additional control measures
at the Carleton Farms Landfill and Carmeuse Lime, which the commenter
states are among the top ten emitters of SO<INF>2</INF> in Wayne
County. The commenter contends that five of the sources addressed in
Michigan's plan are part of the Wayne County steel supply chain and
that the plan must address the technological advances in steel
production such as direct reduced iron and electric arc furnace
technology, which would greatly reduce SO<INF>2</INF> and other
pollutant emissions in the Detroit area. The commenter argues that the
Cleveland-Cliffs Steel Corporation is transitioning one of its other
facilities to cleaner steel production and that making the transition
at this facility would result in strong benefits to the health and
environment of surrounding communities with environmental justice
concerns, create jobs, and help Michigan meet its carbon neutrality
goals.
The commenter concludes that EPA should disapprove the
nonattainment SIP.
Response: Section 172(c)(1) of the CAA provides that nonattainment
plans ``shall provide for the implementation of all reasonably
available control measures as expeditiously as practicable (including
such reductions in emissions from existing sources in the area as may
be obtained through the adoption, at a minimum, of reasonably available
control technology) and shall provide for attainment of the national
primary ambient air quality standards.'' EPA has long defined RACT for
SO<INF>2</INF> as that control technology which will achieve the NAAQS
within statutory timeframes. See State Implementation Plans; General
Preamble for the Implementation of Title I of the CAA Amendments of
1990; Proposed Rule, 57 FR 13498, 13547 (April 16, 1992) (General
Preamble); see also, SO<INF>2</INF> Guideline Document, U.S.
Environmental Protection Agency, Office of Air Quality Planning and
Standards, Research Triangle Park, NC 27711, EPA-452/R-94-008, February
1994 (SO<INF>2</INF> Guideline), at 6-39. Since SO<INF>2</INF> RACT is
already defined as the technology necessary to achieve the
SO<INF>2</INF> NAAQS, control technology which failed to achieve the
NAAQS would fail to be SO<INF>2</INF> RACT. EPA intends to continue
defining RACT for SO<INF>2</INF> as that control technology which will
achieve the NAAQS, as it has in numerous SIP actions since promulgating
the 2010 SO<INF>2</INF> NAAQS. Here, the emission limits and other
associated requirements in Michigan's plan provide for such NAAQS
attainment, as demonstrated by the plan's modeling analysis.
Consequently, under EPA's longstanding approach to SO<INF>2</INF> RACT,
the CAA section 172(c)(1) RACM/RACT requirement is met. CAA section
172(c)(6) also requires plans to include enforceable emission limits
and control measures as may be necessary or appropriate to provide for
attainment. The emission limits and associated requirements included as
part of Michigan's plan show attainment of the 2010 SO<INF>2</INF>
NAAQS of 75 parts per billion (ppb), because the modeling analysis
shows a maximum concentration of 73.6 ppb. Thus, further controls are
not necessary to satisfy the requirement for RACT.\1\
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\1\ See SO<INF>2</INF> Guideline. See also EPA's 2014
SO<INF>2</INF> Nonattainment Guidance; General Preamble.
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EPA disagrees that updated modeling is required for Michigan's
attainment plan. The commenter did not present any evidence or argument
to suggest that the meteorological data EPA used in the FIP modeling
analysis is no longer representative, and EPA notes that when comparing
the wind roses of the Detroit Metropolitan Wayne County Airport's 2016-
2020 wind data and the 2019-2023 wind data, the wind roses are very
similar in wind direction frequency and wind speed classes.\2\ There
also have not been any major bug fixes to AERMET, the AERMOD
preprocessor with which meteorological data is processed, since EPA's
FIP modeling was completed. Moreover, the Carleton Farms Landfill that
the commenter points to is located outside of the nonattainment area
and EPA's modeling domain approximately 23 kilometers to the southwest
of the Allen Park monitor. While EPA would not expect such long-range
transport to impact receptors within the nonattainment area, any
SO<INF>2</INF> emissions from the source would be captured in the
background concentrations due to the prevailing southwest winds.
Therefore, EPA would not expect any significant changes in
SO<INF>2</INF> concentrations in the Detroit nonattainment area if
Michigan were to complete an updated modeling analysis.
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\2\ A comparison of the wind roses of the Detroit Metropolitan
Wayne County Airport's 2016-2020 and 2019-2023 wind data is included
in the docket for this action.
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EPA disagrees that approval of Michigan's SIP does not address
Michigan's requirement to submit a revised plan for the Detroit area
following EPA's January 28, 2022, finding of failure to attain by the
applicable attainment date. EPA's 2014 SO<INF>2</INF> Nonattainment
Guidance states that a revision required under CAA section 179 ``is to
achieve attainment of the 1-hour SO<INF>2</INF> NAAQS as expeditiously
as practicable.'' Michigan's revised SIP, as submitted on December 20,
2022, and supplemented on February 21, 2023, December 14, 2023, and
April 2, 2024, provides for attainment of the SO<INF>2</INF> NAAQS, and
all compliance dates included in the plan have passed. Therefore, on
April 29, 2024, EPA issued a finding of completeness, included in the
docket for this action, determining that Michigan's plan satisfies the
completeness criteria set forth at 40 CFR part 51, appendix V and meets
the requirement set forth in EPA's January 28, 2022, finding of failure
to attain that Michigan submit a complete revision to its SIP that,
among other elements, provides for expeditious attainment of the 2010
SO<INF>2</INF> NAAQS.
III. What action is EPA taking?
EPA is approving Michigan's revised SIP submission, which the State
submitted to EPA on December 20, 2022, and supplemented on February 21,
2023, December 14, 2023, and April 2, 2024, for attaining the 2010
SO<INF>2</INF> NAAQS for the Detroit area and for meeting other
nonattainment area planning requirements of CAA sections
[[Page 21231]]
110, 172, 179 and 192. This SO<INF>2</INF> attainment plan includes
Michigan's attainment demonstration for the Detroit area. The plan also
addresses requirements for RFP, RACT/RACM, enforceable emission limits
and control measures, and contingency measures. EPA previously
concluded that Michigan has addressed the requirements for emissions
inventories for the Detroit area and nonattainment area NSR. EPA is
determining in this action that Michigan's Detroit SO<INF>2</INF>
attainment plan meets applicable requirements of sections 110, 172,
179, and 192 of the CAA.
Michigan's Detroit SO<INF>2</INF> attainment plan is based on
enforceable emission limits and associated requirements, which include
the Carmeuse Lime emission limits specified in Permit to Install 193-
14A, the DTE Trenton Channel emission limits specified in Permit to
Install 125-11C, the U.S. Steel limits specified in Permit to Install
110-23 and Permit to Install 108-23, the EES Coke emission limits
specified in Permit to Install 51-08C, the Cleveland-Cliffs Steel
Corporation emission limits specified in Permit MI-ROP-A8640-2016a, and
the DIG emission limits specified in Permit 253-02A and Permit to
Install 109-23. The Carmeuse Lime and DTE Trenton Channel permits have
already been incorporated into Michigan's SIP, so EPA is not re-
incorporating them into 40 CFR part 52 here.
EPA is incorporating Permit to Install 110-23 and Permit to Install
108-23, governing U.S. Steel SO<INF>2</INF> emissions; Permit to
Install 51-08C, governing EES Coke SO<INF>2</INF> emissions; Permit MI-
ROP-A8640-2016a, governing Cleveland-Cliffs Steel Corporation
SO<INF>2</INF> emissions; and Permit to Install 109-23 and the cover
sheet, section 5.1d (SO<INF>2</INF> emission limit), and sections 5.2-
5.10 (Special Conditions) of Permit 253-02A, governing DIG
SO<INF>2</INF> emissions into Michigan's SIP in this action.
This approval terminates the sanctions clock started under CAA
section 179 resulting from EPA's March 19, 2021, partial disapproval of
the prior SIP.
IV. Incorporation by Reference
In this rule, EPA is finalizing regulatory text that includes
incorporation by reference. In accordance with requirements of 1 CFR
51.5, EPA is finalizing the incorporation by reference of the Michigan
Regulations described in section III of this preamble and set forth in
the amendments to 40 CFR part 52 below. EPA has made, and will continue
to make, these documents generally available through <a href="https://www.regulations.gov">https://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). Therefore, these materials have
been approved by EPA for inclusion in the SIP, have been incorporated
by reference by EPA into that plan, are fully federally enforceable
under sections 110 and 113 of the CAA as of the effective date of the
final rulemaking of EPA's approval, and will be incorporated by
reference in the next update to the SIP compilation.\3\
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\3\ 62 FR 27968 (May 22, 1997).
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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 CAA.
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 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 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 18, 2025. 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, Reporting and recordkeeping
requirements, Sulfur oxides.
Dated: May 5, 2025.
Anne Vogel,
Regional Administrator, Region 5.
For the reasons stated in the preamble, title 40 CFR part 52 is
amended as follows:
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.
0
2. Amend Sec. 52.1170:
0
a. In the table in paragraph (d) by adding in alphabetical order
entries for ``Cleveland-Cliffs Steel Corporation, Wayne County'',
``Dearborn Industrial Generation, LLC'', ``Dearborn Industrial
Generation, LLC'', ``EES Coke Battery,
[[Page 21232]]
LLC'', ``EES Coke Battery, LLC'', and ``United States Steel
Corporation--Great Lakes Works''; and
0
b. In the table in paragraph (e), under the heading ``Attainment
Demonstrations'' by adding an entry for ``SO<INF>2</INF> (2010)'' after
the entry for ``Carbon monoxide and 1-hour ozone attainment
demonstrations and I/M program''.
The additions read as follows:
Sec. 52.1170 Identification of plan.
* * * * *
(d) * * *
EPA--Approved Michigan Source-Specific Provisions
----------------------------------------------------------------------------------------------------------------
State
Name of source Order No. effective date EPA approval date Comments
----------------------------------------------------------------------------------------------------------------
Cleveland-Cliffs Steel MI-ROP-A8640-2016a........ 1/19/2017 5/19/2025, 90 FR ...............
Corporation, Wayne County. [Insert Federal
Register page where
the document
begins].
* * * * * * *
Dearborn Industrial 253-02A................... 9/25/2003 5/19/2025, 90 FR Cover sheet,
Generation, LLC. [Insert Federal section 5.1d,
Register page where and sections
the document 5.2 through
begins]. 5.10.
Dearborn Industrial 109-23.................... 9/26/2023 5/19/2025, 90 FR ...............
Generation, LLC. [Insert Federal
Register page where
the document
begins].
* * * * * * *
EES Coke Battery, LLC........ 51-08C.................... 11/21/2014 5/19/2025, 90 FR ...............
[Insert Federal
Register page where
the document
begins].
EES Coke Battery, LLC........ 108-23.................... 9/26/2023 5/19/2025, 90 FR ...............
[Insert Federal
Register page where
the document
begins].
* * * * * * *
United States Steel 110-23.................... 9/26/2023 5/19/2025, 90 FR ...............
Corporation--Great Lakes [Insert Federal
Works. Register page where
the document
begins].
* * * * * * *
----------------------------------------------------------------------------------------------------------------
* * * * *
(e) * * *
EPA--Approved Michigan Nonregulatory and Quasi-Regulatory Provisions
----------------------------------------------------------------------------------------------------------------
Applicable
Name of nonregulatory SIP geographic or State submittal EPA approval date Comments
provision nonattainment area date
----------------------------------------------------------------------------------------------------------------
* * * * * * *
----------------------------------------------------------------------------------------------------------------
Attainment Demonstrations
----------------------------------------------------------------------------------------------------------------
* * * * * * *
SO2 (2010)..................... Detroit area 12/20/2022, 02/21/ 5/19/2025, 90 FR ...................
(Wayne County, 2023, 12/14/2023 [Insert Federal
part). and 04/2/2024. Register page
where the
document begins].
* * * * * * *
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[FR Doc. 2025-08727 Filed 5-16-25; 8:45 am]
BILLING CODE 6560-50-P
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</html>Indexed from Federal Register on May 19, 2025.
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