[Federal Register Volume 90, Number 150 (Thursday, August 7, 2025)]
[Rules and Regulations]
[Pages 38005-38009]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2025-14983]
=======================================================================
-----------------------------------------------------------------------
ENVIRONMENTAL PROTECTION AGENCY
40 CFR Part 52
[EPA-R08-OAR-2022-0536; FRL-11829-02-R8]
Air Plan Approval; Wyoming; Revisions to Regional Haze State
Implementation Plan
AGENCY: Environmental Protection Agency (EPA).
ACTION: Final rule.
-----------------------------------------------------------------------
SUMMARY: The Environmental Protection Agency (EPA) is approving a State
Implementation Plan (SIP) revision submitted by the State of Wyoming on
December 30, 2022, and supplemented on August 31, 2023, and November
16, 2023, addressing regional haze for Jim Bridger Units 1 and 2
(Wyoming 2022 SIP revision). Wyoming's 2022 SIP revision provides
oxides of nitrogen (NOX) emission and heat input limits that
collectively allow for identical reasonable progress as part of the
long term strategy during the first implementation period as the
associated emission limits in the existing SIP for Jim Bridger Units 1
and 2. The EPA is also approving monthly and annual NOX and
sulfur dioxide (SO2) emission limits for Jim Bridger Units 1
through 4 that were included in Wyoming's 2022 SIP revision. The EPA is
taking this action pursuant to the Clean Air Act (CAA or the Act).
DATES: This rule is effective on September 8, 2025.
ADDRESSES: The EPA has established a docket for this action under
Docket ID No. EPA-R08-OAR-2022-0536. All documents in the docket are
listed on the https://www.regulations.gov 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 https://www.regulations.gov, or please
contact the person identified in the FOR FURTHER INFORMATION CONTACT
section for additional availability information.
FOR FURTHER INFORMATION CONTACT: Jaslyn Dobrahner, Air and Radiation
Division, EPA, Region 8, Mailcode 8P-ARD, 1595 Wynkoop Street, Denver,
Colorado 80202-1129, telephone number: (303) 312-6252, email address:
[email protected].
SUPPLEMENTARY INFORMATION: Throughout this document ``we,'' ``us,'' and
``our'' means the EPA.
I. What is being addressed in this document?
The EPA is approving Wyoming's 2022 SIP revision addressing
regional haze long term strategy for the first implementation period at
Jim Bridger Units 1 and 2. As required by section 169A of the CAA, the
regional haze rule (RHR) calls for state and federal agencies to work
together to improve visibility in 156 national parks and wilderness
areas, known as mandatory Class I Federal areas.\1\ The rule requires
the states, in coordination with the EPA, the National Park Service
(NPS), the Fish and Wildlife Service, the Forest Service, and other
interested parties, to develop and implement air quality protection
plans to reduce the pollution that causes visibility impairment in
mandatory Class I Federal areas. Visibility impairing pollutants
include fine and coarse particulate matter (PM) (e.g., sulfates,
nitrates, organic carbon, elemental carbon, and soil dust) and their
precursors (e.g., SO2, NOX, and, in some cases,
volatile organic compounds (VOC) and ammonia (NH3)). As
discussed in further detail in our proposed rule, this document, and
the accompanying Response to Comments (RTC) document, the EPA finds
that Wyoming submitted a regional haze SIP revision addressing long
term strategy at Jim Bridger Units 1 and 2 that meets the regional haze
requirements for the first implementation period. The State's
submission, the proposed rule, and the RTC document can be found in the
docket for this action.
---------------------------------------------------------------------------
\1\ See 40 CFR part 81, subpart D.
---------------------------------------------------------------------------
II. Background
On December 30, 2022, Wyoming submitted a revision to its SIP to
address regional haze for the first implementation period for Jim
Bridger, Units 1 through 4 in accordance with the requirements of the
CAA's regional haze program established by CAA sections 169A and 169B
and 40 CFR 51.308.\2\
---------------------------------------------------------------------------
\2\ The State supplemented the SIP revision on August 31, 2023,
and November 16, 2023.
---------------------------------------------------------------------------
On April 10, 2024, the EPA proposed to approve Wyoming's 2022 SIP
revision which will replace the previously approved NOX
emission limit of 0.07 pounds per million British Thermal Units (lb/
MMBtu) (30-day rolling average) at Jim Bridger Units 1 and 2 for
Wyoming's regional haze long-term strategy.\3\ Specifically, the
Wyoming 2022 SIP revision amends the State's previously approved long-
term strategy for the first regional haze implementation period and
requires Jim Bridger Units 1 and 2 to meet NOX emission
limits of 0.12 lb/MMBtu (30-day rolling average) and annual
NOX limits of 1,314 tons/year for each unit, and a heat
input limit of 21,900,000 MMBtu/year per unit by January 1, 2024.
Ultimately, the Wyoming 2022 SIP revision finds the modified
NOX emission and heat input limits to be sufficient for
reasonable progress as part of the long-term strategy during the first
implementation period in lieu of the existing emission limits
associated with the installation of SCR controls approved and codified
by EPA at 40 CFR 52.2636(c)(1).\4\ Wyoming also included in Wyoming's
2022 SIP revision NOX and SO2 monthly and annual
emission limits for Jim Bridger Units 1-4. The Wyoming 2022 SIP
revision reflects changes to Chapters 7 and 8 of Wyoming's regional
haze SIP narrative \5\ and incorporates certain conditions of Wyoming
air quality permits #P0025809 and #P0036941.
---------------------------------------------------------------------------
\3\ 89 FR 25200 (April 10, 2024).
\4\ 79 FR 5032 (January 30, 2014).
\5\ State of Wyoming, ``Addressing Regional Haze Visibility
Protection For The Mandatory Federal Class I Areas Required Under 40
CFR 51.309,'' Revised May 23, 2022 (``Wyoming 2022 SIP revision'').
---------------------------------------------------------------------------
Our April 10, 2024, proposed rule provided background on the
[[Page 38006]]
requirements of the CAA and RHR, a summary of Wyoming's regional haze
submittals and related EPA actions, and the EPA's rationale for its
proposed action.\6\ That background and rationale will not be restated
in full here; see the proposed rule preamble for details.\7\
---------------------------------------------------------------------------
\6\ 89 FR 25200 (April 10, 2024).
\7\ 89 FR 25200 (April 10, 2024).
---------------------------------------------------------------------------
III. Public Comments and EPA Responses
The public comment period on the proposal closed on May 10, 2024.
During the public comment period, we received three comments on our
proposal; two in support and one in opposition. The commenters were:
\8\ Idaho Power Company,\9\ NPS,\10\ and PacifiCorp.\11\ The full text
of comments received is included in the publicly posted docket
associated with this action at https://www.regulations.gov. Our RTC
document, which is also included in the docket associated with this
action, provides detailed responses to all significant comments
received.
---------------------------------------------------------------------------
\8\ We received one comment that was not related to the proposed
rulemaking.
\9\ Letter dated May 10, 2024.
\10\ Letter dated May 7, 2024.
\11\ Letter dated May 10, 2024.
---------------------------------------------------------------------------
IV. Final Action
For the reasons stated in the proposed rule, we find that the
Wyoming 2022 SIP revision requiring NOX emission and heat
input limits, are sufficient for reasonable progress during the first
planning period and that the NOX emission limits associated
with the installation of SCR controls are no longer required.
Therefore, we are approving Wyoming's 2022 SIP revision for the
NOX reasonable progress analysis and determination for Jim
Bridger Units 1 and 2, including the associated emission and
operational limitations, compliance dates, and monitoring,
recordkeeping and reporting requirements as well as the separate
monthly and annual NOX and SO2 emission limits.
Specifically, the EPA is approving the following as federally
enforceable elements of the Wyoming 2022 SIP revision for Jim Bridger
Units 1-4:
The NOX emission limits found in Wyoming air
quality permit #P0036941 (Condition 9 for NOX lb/MMBtu and
tons/year emission limits) for Units 1 and 2.
The NOX and SO2 emission limits
found in Wyoming air quality permit #P0025809 (Condition 7 for pounds
per hour (lb/hr) and Condition 9 for tons/year) for Units 1-4.
The operational limit on annual heat input (based on a 12-
month rolling average of hourly heat input values) found in Wyoming air
quality permit #P0036941 (Condition 19).
The compliance dates found in Wyoming air quality permit
#P0036941 (Conditions 11 and 16) requiring that Units 1 and 2 comply
with NOX emission rates in lb/MMBtu (30-day rolling average)
and tons/year as well as an annual heat input in MMBtu/year; and permit
#P0025809 (Conditions 7 and 9) requiring that Units 1-4 comply with the
NOX and SO2 emission limits in lb/hr and tons/
year, respectively.
The monitoring, recordkeeping and reporting requirements
found in Wyoming air quality permit #P0036941 (Conditions 4, 5, 6,
10.i.1, 10.i.4, 17, 18, 19, 20, and 21) and permit #P0025809 (Condition
8.i and 9).
The approval of the above elements into the SIP will remove the
0.07 lb/MMBtu NOX (30-day rolling average) long-term
emission limits for Jim Bridger Units 1 and 2 from the SIP and add the
0.12 lb/MMBtu NOX (30-day rolling average) reasonable
progress emission limit and associated NOX emission and heat
input limits. The 0.07 lb/MMBtu (30-day rolling average) NOX
long-term strategy emission limits will remain for Units 3 and 4.
We are also approving the following non-enforceable narrative
elements of the Wyoming 2022 SIP revision for:
Jim Bridger Units 1 and 2, Chapters 7.3.6 PacifiCorp Jim
Bridger Electric Generating Station of Wyoming's regional haze
narrative, Addressing Regional Haze Visibility Protection For The
Mandatory Federal Class I Areas Required Under 40 CFR 51.309, which
contain a source-specific NOX reasonable progress analysis.
Jim Bridger Units 1-4, Chapter 8.3.3 Long-Term Control
Strategies for BART Facilities (Jim Bridger Power Plant (Units 1 and 2)
only) of Wyoming's regional haze narrative, Addressing Regional Haze
Visibility Protection For The Mandatory Federal Class I Areas Required
Under 40 CFR 51.309, which contains (1) monthly NOX and
SO2 emission limits and an annual emissions cap for
NOX plus SO2; \12\ and (2) a compliance date for
Units 1 and 2 to meet a NOX 30-day rolling average (lb/
MMBtu), NOX annual emission cap (tons/year), and annual heat
input (MMBtu/year).
---------------------------------------------------------------------------
\12\ The revised text in Chapter 8 refers only to Jim Bridger
Units 1 and 2. However, the monthly and annual NOX and
SO2 emission limits contained within the permit
referenced, #P0025809, apply to Units 1-4 (Wyoming 2022 SIP revision
at 8).
Table 1--List of Wyoming SIP Amendments That the EPA Is Approving
------------------------------------------------------------------------
-------------------------------------------------------------------------
Conditions of Wyoming Air Quality Permit #P0036941 the EPA is Approving
------------------------------------------------------------------------
Condition 9 for NOX lb/MMBtu and tons/year emission limits; Condition 11
for fuel compliance date; Conditions 16, 19 for heat input limit and
associated compliance date; and Conditions 4, 5, 6, 10.i.1, 10.i.4, 17,
18, 19, 20, and 21 for associated monitoring, recordkeeping, and
reporting requirements.
------------------------------------------------------------------------
Conditions of Wyoming Air Quality Permit #P0025809 the EPA is Approving
------------------------------------------------------------------------
Condition 7 (lb/hr emission limits) and 9 (tons/year emission limits)
for NOX and SO2 monthly-block and annual emission limits and compliance
dates, and Condition 8.i for associated monitoring, recordkeeping, and
reporting requirements.
------------------------------------------------------------------------
Amended Sections of Wyoming Regional Haze SIP Narrative the EPA is
Approving \1\
------------------------------------------------------------------------
Chapter 7.3.6, Chapter 8.3.3 (Jim Bridger Power Plant (Units 1 and 2)
only).
------------------------------------------------------------------------
\1\ Wyoming 2022 SIP revision.
V. Incorporation by Reference
In this document, the EPA is finalizing regulatory text that
includes incorporation by reference. In accordance with requirements of
1 CFR 51.5, the EPA is finalizing the incorporation by reference of the
operating permits for Jim Bridger Units 1 and 2 and Jim Bridger Units
1-4 described in sections II. and IV. of this preamble and set forth
below in the
[[Page 38007]]
amendments to 40 CFR part 52. The EPA has made, and will continue to
make, these materials generally available through https://www.regulations.gov and at the EPA Region 8 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 the EPA for inclusion in the State Implementation
Plan, have been incorporated by reference by the 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 the EPA's approval,
and will be incorporated by reference in the next update to the SIP
compilation.\13\
---------------------------------------------------------------------------
\13\ 62 FR 27968 (May 22, 1997).
---------------------------------------------------------------------------
VI. 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 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:
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);
Is not subject to Executive Order 14192 (90 FR 9065,
February 6, 2025) because SIP 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, 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);
Is not subject to Executive Order 13045 (62 FR 19885,
April 23, 1997) because it approves a state program;
Is not a significant regulatory action subject to
Executive Order 13211 (66 FR 28355, May 22, 2001); and
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).
The Congressional Review Act, 5 U.S.C. 801 et seq., as added by the
Small Business Regulatory Enforcement Fairness Act of 1996, generally
provides that before a rule may take effect, the agency promulgating
the rule must submit a rule report, which includes a copy of the rule,
to each House of the Congress and to the Comptroller General of the
United States. Section 804, however, exempts from section 801 the
following types of rules: Rules of particular applicability; rules
relating to agency management or personnel; and rules of agency
organization, procedure, or practice that do not substantially affect
the rights or obligations of non-agency parties. 5 U.S.C. 804(3).
Because this is a rule of particular applicability, the EPA is not
required to submit a rule report regarding this action under section
801.
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 October 6, 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, Carbon monoxide,
Greenhouse gases, Incorporation by reference, Intergovernmental
relations, Lead, Nitrogen dioxide, Ozone, Particulate matter, Reporting
and recordkeeping requirements, Sulfur oxides, Volatile organic
compounds.
Dated: August 1, 2025.
Cyrus M. Western,
Regional Administrator, Region 8.
For the reasons stated in the preamble, the Environmental
Protection Agency is amending title 40 CFR part 52 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.
Subpart ZZ--Wyoming
0
2. In Sec. 52.2620:
0
a. The table in paragraph (d) is amended by adding the entries ``Jim
Bridger Units 1 and 2'' and ``Jim Bridger Units 1-4'' at the end of the
table.
0
b. The table in paragraph (e) is amended by revising the entry ``(25)
XXV''.
The additions and revision read as follows:
Sec. 52.2620 Identification of plan.
* * * * *
(d) * * *
[[Page 38008]]
--------------------------------------------------------------------------------------------------------------------------------------------------------
State EPA effective
Regulation Rule title effective date date Final rule citation/date Comments
--------------------------------------------------------------------------------------------------------------------------------------------------------
* * * * * * *
Jim Bridger Units 1 and 2............ Air Quality SIP Permit 8/29/2023 9/8/2025 90 FR [insert Federal Only the following permit
containing associated Register page where the provisions: NOX emission
requirements, P0036941. document begins], 8/7/ limits (P0036941, condition
2025. 9 for NOX lb/MMBtu and tons/
year emission limits);
emission limit compliance
date (P0036941, condition 11
for fuel compliance date);
heat input limit and
associated compliance date
(P0036941, condition 16,
19); and associated
monitoring, recordkeeping,
and reporting requirements
(P0036941, conditions 4, 5,
6, 10.i.1, 10.i.4, 17, 18,
19, 20, and 21).
Jim Bridger Units 1-4................ Air Quality SIP Permit 5/5/2020 9/8/2025 90 FR [insert Federal Only the following permit
containing additional Register page where the provisions: NOX and SO2
requirements, P0025809. document begins], 8/7/ monthly-block and annual
2025. emission limits (P0025809,
condition 7 for lb/hr
emission limits, and
P0025809, condition 9 for
tons/year emission limits);
emission limit compliance
dates (P0025809, conditions
7 and 9); and associated
monitoring, recordkeeping,
and reporting requirements
(P0025809, Condition 8.i).
--------------------------------------------------------------------------------------------------------------------------------------------------------
(e) * * *
----------------------------------------------------------------------------------------------------------------
State EPA effective Final rule
Rule No. Rule title effective date date citation/date Comments
----------------------------------------------------------------------------------------------------------------
* * * * * * *
(25) XXV............ Wyoming State 5/23/2022 9/8/2025 90 FR [insert Excluding portions of
Implementation Federal the following:
Plan for Register page Chapters 6.4, 6.5.7,
Regional Haze where the 6.5.8, and 7.5. EPA
for 309(g). document disapproved (1) the
begins], 8/7/ NOX BART
2025. determinations for
(a) Laramie River
Units 1-3, (b) Dave
Johnston Unit 3, and
(c) Wyodak Unit 1;
(2) the State's
monitoring,
recordkeeping, and
reporting
requirements for
BART units; and (3)
the State's
reasonable progress
goals.
* * * * * * *
----------------------------------------------------------------------------------------------------------------
0
3. In Sec. 52.2636:
0
a. Revise table 1 in paragraph (c)(1).
0
b. Add tables 3 and 4 in numerical order in paragraph (c)(1).
0
c. Revise paragraph (d)(1).
The revisions and additions read as follows:
Sec. 52.2636 Implementation plan for regional haze.
* * * * *
(c) * * *
(1) * * *
Table 1 to Sec. 52.2636(c)(1)
[Emission limits for BART units for which the EPA approved the state's
BART and reasonable progress determinations]
------------------------------------------------------------------------
NOX emission
PM emission limits-- lb/MMBtu
Source name/BART unit limits-- lb/ (30-day rolling
MMBtu average)
------------------------------------------------------------------------
FMC Westvaco Trona Plant/Unit NS-1A.. 0.05 0.35
FMC Westvaco Trona Plant/Unit NS-1B.. 0.05 0.35
TATA Chemicals Partners (General 0.09 0.28
Chemical) Green River Trona Plant/
Boiler C............................
TATA Chemicals Partners (General 0.09 0.28
Chemical) Green River Trona Plant/
Boiler D............................
Basin Electric Power Cooperative 0.03 N/A
Laramie River Station/Unit 1........
Basin Electric Power Cooperative 0.03 N/A
Laramie River Station/Unit 2........
Basin Electric Power Cooperative 0.03 N/A
Laramie River Station/Unit 3........
PacifiCorp Dave Johnston Power Plant/ 0.015 N/A
Unit 3..............................
PacifiCorp Dave Johnston Power Plant/ 0.015 0.15
Unit 4..............................
PacifiCorp Jim Bridger Power Plant/ 0.03 0.26/0.12
Unit 1 \1\ \2\......................
PacifiCorp Jim Bridger Power Plant/ 0.03 0.26/0.12
Unit 2 \1\ \2\......................
PacifiCorp Jim Bridger Power Plant/ 0.03 0.26/0.07
Unit 3 \1\ \2\......................
PacifiCorp Jim Bridger Power Plant/ 0.03 0.26/0.07
Unit 4 \1\ \2\......................
[[Page 38009]]
PacifiCorp Naughton Power Plant/Unit 0.04 0.26
1...................................
PacifiCorp Naughton Power Plant/Unit 0.04 0.26
2...................................
PacifiCorp Wyodak Power Plant/Unit 1. 0.015 N/A
------------------------------------------------------------------------
\1\ The owners and operators of PacifiCorp Jim Bridger Units 1, 2, 3,
and 4 shall comply with the NOX emission limit for BART of 0.26 lb/
MMBtu and the PM emission limit for BART of 0.03 lb/MMBtu and other
requirements of this section by March 4, 2019. The owners and
operators of PacifiCorp Jim Bridger Units 1, 2, 3, and 4 shall comply
with the NOX emission limit for reasonable progress of 0.12 lb/MMBtu
by January 1, 2024, for Jim Bridger Units 1 and 2 and 0.07 lb/MMBtu by
December 31, 2015, for Unit 3, and December 31, 2016, for Unit 4.
\2\ Additional NOX and SO2 emissions control measures and associated
compliance dates for Jim Bridger Units 1-4, are found in Sec.
52.2636(c) tables 3 and 4.
* * * * *
Table 3 to Sec. 52.2636(c)(1)
[NOX and SO2 emission limits for Jim Bridger units 1-4, effective January 1, 2022]
----------------------------------------------------------------------------------------------------------------
Total units 1-4 NOX emission Total units 1-4 SO2 emission
limit (monthly average basis) limit (monthly average basis)
Month \1\ \2\ (lb/hour) \1\ \2\ (lb/hour)
----------------------------------------------------------------------------------------------------------------
January......................................... 2,050 2,100
February........................................ 2,050 2,100
March........................................... 2,050 2,100
April........................................... 2,050 2,100
May............................................. 2,200 2,100
June............................................ 2,500 2,100
July............................................ 2,500 2,100
August.......................................... 2,500 2,100
September....................................... 2,500 2,100
October......................................... 2,300 2,100
November........................................ 2,030 2,100
December........................................ 2,050 2,100
----------------------------------------------------------------------------------------------------------------
\1\ Effective January 1, 2022, through December 31, 2023.
\2\ In addition to monthly NOX and SO2 emission limits, an annual, plant-wide NOX plus SO2 emissions cap of
17,500 tons per year is effective January 1, 2022, through December 31, 2023.
Table 4 to Sec. 52.2636(c)(1)
[NOX Emission limits and heat input for Jim Bridger Units 1 and 2,
effective January 1, 2024]
------------------------------------------------------------------------
NOX emission limit Heat input (MMBtu/
Unit (tons/year) year)
------------------------------------------------------------------------
Unit 1...................... 1,314 21,900,000
Unit 2...................... 1,314 21,900,000
------------------------------------------------------------------------
* * * * *
(d) Compliance date. (1) The owners and operators of PacifiCorp Jim
Bridger Units 1, 2, 3, and 4 shall comply with the NOX
emission limit of 0.26 lb/MMBtu and PM emission limit of 0.03 lb/MMBtu
and other requirements of this section by March 4, 2019. The owners and
operators of PacifiCorp Jim Bridger Units 1 and 2 shall comply with the
NOX emission limit of 0.12 lb/MMBtu by January 1, 2024. The
owners and operators of PacifiCorp Jim Bridger Units 3 and 4 shall
comply with the NOX emission limit of 0.07 lb/MMBtu by:
December 31, 2015, for Unit 3, and December 31, 2016, for Unit 4. The
owners and operators of PacifiCorp Jim Bridger Units 1, 2, 3, and 4
shall comply with the NOX and SO2 emission limits
contained in Sec. 52.2636(c) table 3 by January 1, 2022, through
December 31, 2023. The owners and operators of PacifiCorp Jim Bridger
Units 1 and 2 shall comply with NOX emission and heat input
limits contained in Sec. 52.2636(c) table 4 by January 1, 2024.
* * * * *
[FR Doc. 2025-14983 Filed 8-6-25; 8:45 am]
BILLING CODE 6560-50-P