National Emission Standards for Hazardous Air Pollutants: Coal- and Oil-Fired Electric Utility Steam Generating Units: Final Repeal; Correction

[Federal Register Volume 91, Number 73 (Thursday, April 16, 2026)]
[Rules and Regulations]
[Pages 20368-20369]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2026-07396]


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ENVIRONMENTAL PROTECTION AGENCY

40 CFR Part 63

[EPA-HQ-OAR-2018-0794; FRL-6716.4-03-OAR]
RIN 2060-AW68


National Emission Standards for Hazardous Air Pollutants: Coal- 
and Oil-Fired Electric Utility Steam Generating Units: Final Repeal; 
Correction

AGENCY: Environmental Protection Agency (EPA).

ACTION: Final rule; correction.

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SUMMARY: The U.S. Environmental Protection Agency (EPA) is correcting a 
final rule that published in the Federal Register (FR) on February 24, 
2026, and will become effective on April 27, 2026. The EPA finalized 
the repeal of specific amendments to the National Emission Standards 
for Hazardous Air Pollutants (NESHAP) for Coal- and Oil-Fired Electric 
Utility Steam Generating Units (EGUs), commonly referred to as the 
Mercury and Air Toxics Standards (MATS), that were promulgated on May 
7, 2024 (``MATS NESHAP''). This action corrects inadvertent 
typographical errors and minor omitted text in the Federal Register. 
The corrections described in this action do not affect the substantive 
requirements of the final rule that repeal specific amendments to the 
MATS NESHAP, promulgated on May 7, 2024.

DATES: The correction is effective April 27, 2026.

FOR FURTHER INFORMATION CONTACT: For information about this final 
action, contact U.S. EPA, Attn: Christopher Werner, Mail Drop: 
Industrial Processing and Power Division (D243-01), 109 T.W. Alexander 
Drive, P.O. Box 12055, Research Triangle Park, North Carolina 27711; 
telephone number: (919) 541-5133; and email address: 
werner.christopher@epa.gov.

SUPPLEMENTARY INFORMATION: The EPA is correcting the final rule, 
National Emission Standards for Hazardous Air Pollutants: Coal- and 
Oil-Fired Electric Utility Steam Generating Units: Final Repeal, which 
published in the Federal Register at 91 FR 9088, February 24, 2026. 
Following publication of this document, the EPA discovered inadvertent 
typographical errors and omitted text in the regulatory text of the 
MATS NESHAP.
    The EPA is correcting the following errors published in Federal 
Register Document Number (FR Doc.) 2026-03638, which do not change the 
requirements finalized in the MATS NESHAP rule that published on 
February 24, 2026:
    •  At 91 FR 9127, fourth column of Table 5 to Subpart UUUUU 
of Part 63--Performance Testing Requirements, the final MATS NESHAP 
rule amendatory instruction number 18 amended table 5 to subpart UUUUU. 
The regulatory text in entry 3.e.1(D) is missing part of the Reported 
Result equation. The EPA corrects this equation to read as: ``Reported 
Result = (Measured Concentration in Stack)/(%R)x100.''
    •  At 91 FR 9133, third column, Appendix E to Subpart UUUUU 
of Part 63--Data Elements, the final MATS NESHAP rule amendatory 
instruction number 23 amended section 31.0 of appendix E to subpart 
UUUUU. The EPA now amends the regulatory text of section 31.0 for 
clarity, adding the word ``data'' in front of the third instance of the 
word ``file'' in the first sentence in section 31.0 to read: ``You must 
provide each test included in the data file described in this appendix 
with supporting documentation, in a PDF file submitted concurrently 
with the data file, such that all the data required to be reported by 
Sec.  63.7(g) are provided.''
    Section 553 of the Administrative Procedure Act provides that when 
an agency for good cause finds that notice and public procedure are 
impracticable, unnecessary, or contrary to the public interest, the 
Agency may issue a rule without providing notice and opportunity for 
public comment.\1\ The

[[Page 20369]]

EPA has determined that there is good cause for making this rule final 
without prior proposal and opportunity for comment because the changes 
to the rule are minor technical corrections, are noncontroversial in 
nature, and do not substantively change the requirements of the MATS 
NESHAP final rule. Rather, the changes correct inadvertent 
typographical errors and minor omitted text. Additionally, the 
corrections to the regulatory text match the revisions described in the 
preamble to the final MATS NESHAP rule. Thus, notice and opportunity 
for public comment are unnecessary. The EPA finds that this constitutes 
good cause under 5 U.S.C. 553(b)(B).
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    \1\ 5 U.S.C. 553(b)(B).
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Corrections

    In FR Doc. 2026-03638 appearing at 91 FR 9088 in the Federal 
Register of Tuesday, February 24, 2026, the following corrections are 
made:

Table 5 to Subpart UUUUU of Part 63--Performance Testing Requirements 
[Corrected]

    1. On page 9127, in the fourth column, the text ``(D) The %R value 
for each compound must be reported in the test report and all field 
measurements corrected with the calculated %R value for that compound 
using the following equation: Reported Result = (Measured Concentration 
in Stack)/(%R)x.'' is corrected to read ``(D) The %R value for each 
compound must be reported in the test report and all field measurements 
corrected with the calculated %R value for that compound using the 
following equation: Reported Result = (Measured Concentration in 
Stack)/(%R)x100.''

Appendix E to Subpart UUUUU of Part 63--Data Elements [Corrected]

    2. On page 9133, in the third column, first sentence of section 
``31.0 Other Information for Each Test or Test Series'', the text ``You 
must provide each test included in the data file described in this 
appendix with supporting documentation, in a PDF file submitted 
concurrently with the file, such that all the data required to be 
reported by Sec.  63.7(g) are provided.'' is corrected to read ``You 
must provide each test included in the data file described in this 
appendix with supporting documentation, in a PDF file submitted 
concurrently with the data file, such that all the data required to be 
reported by Sec.  63.7(g) are provided.''

    Dated: April 13, 2026.
Aaron Szabo,
Assistant Administrator, Office of Air and Radiation.
[FR Doc. 2026-07396 Filed 4-15-26; 8:45 am]
BILLING CODE 6560-50-P