Air Plan Approval; CO; Revisions to Colorado Procedural Rules and Common Provisions Regulation

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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)]
[Proposed Rules]
[Pages 97-98]
From the Federal Register Online via the Government Publishing Office [<a href="http://www.gpo.gov">www.gpo.gov</a>]
[FR Doc No: 2025-24140]


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ENVIRONMENTAL PROTECTION AGENCY

40 CFR Part 52

[EPA-R08-OAR-2024-0550; FRL-13050-01-R8]


Air Plan Approval; CO; Revisions to Colorado Procedural Rules and 
Common Provisions Regulation

AGENCY: Environmental Protection Agency (EPA).

ACTION: Proposed rule.

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SUMMARY: The Environmental Protection Agency (EPA) is proposing to 
approve revisions to the Colorado State Implementation Plan (SIP) that 
were submitted by the Colorado Department of Public Health and 
Environment (CDPHE) on May 20, 2022. CDPHE requested EPA approval of 
revisions to the Colorado's Procedural Rules and Common Provisions 
Regulation. The revised rules include non-substantive updates to rule 
language that are administrative in nature and were intended to provide 
for general cleanup and improved readability. The EPA is proposing 
approval of these SIP revisions because we have determined that they 
are in accordance with the requirements for SIP provisions under the 
Clean Air Act (CAA). In the ``Rules and Regulations'' section of this 
Federal Register, we are approving these SIP revisions as a direct 
final rule without a prior proposed rule. If we receive no adverse 
comment, we will not take further action on this proposed rule.

DATES: Written comments must be received on or before February 2, 2026.

ADDRESSES: Submit your comments, identified by Docket ID No. EPA-R08-
OAR-2024-0550, to the Federal Rulemaking Portal: <a href="https://www.regulations.gov">https://www.regulations.gov</a>. Follow the online instructions for submitting 
comments. Once submitted, comments cannot be edited or removed from 
<a href="http://www.regulations.gov">www.regulations.gov</a>. 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, the full EPA public comment 
policy, information about CBI or multimedia submissions, and general 
guidance on making effective comments, please visit <a href="https://www.epa.gov/dockets/commenting-epa-dockets">https://www.epa.gov/dockets/commenting-epa-dockets</a>.
    Docket: All documents in the docket are listed in the <a href="https://www.regulations.gov">https://www.regulations.gov</a> index. Although listed in the index, some 
information is not publicly available, e.g., CBI or other information 
whose disclosure is restricted by statute. Certain other material, such 
as copyrighted material, will be publicly available only in hard copy. 
Publicly available docket materials are available electronically in 
<a href="https://www.regulations.gov">https://www.regulations.gov</a>. Please email or call the person listed in 
the FOR FURTHER INFORMATION CONTACT section if you need to make 
alternative arrangements for access to the docket.

FOR FURTHER INFORMATION CONTACT: Liz Ulrich, Air and Radiation 
Division,

[[Page 98]]

EPA, Region 8, Mailcode 8ARD-IO, 1595 Wynkoop Street, Denver, Colorado 
80202-1129, telephone number: (406) 457-5008, email address: 
<a href="/cdn-cgi/l/email-protection#ed98819f848e85c3888184978c8f889985ad889d8cc38a829b"><span class="__cf_email__" data-cfemail="4e3b223c272d26602b2227342f2c2b3a260e2b3e2f60292138">[email&#160;protected]</span></a>.

SUPPLEMENTARY INFORMATION: This document proposes to approve revisions 
to the Colorado SIP that incorporate certain provisions of Colorado's 
Procedural Rules and Common Provisions Regulation. We have published a 
direct final rule approving those revisions in the Rules and 
Regulations section of this Federal Register because we view this as a 
noncontroversial action and anticipate no adverse comment. We have 
explained our reasons for this action in the preamble to the direct 
final rule.
    If we receive no adverse comment, we will not take further action 
on this proposed rule. If we receive adverse comment, we will withdraw 
the direct final rule, and it will not take effect. We will address all 
public comments in any subsequent final rule based on this proposed 
rule.
    We do not intend to institute a second comment period on this 
action. Any parties interested in commenting must do so at this time. 
For further information, please see the information provided in the 
ADDRESSES section of this document.

    Dated: December 16, 2025.

Cyrus M. Western,
Regional Administrator, Region 8.
[FR Doc. 2025-24140 Filed 12-31-25; 8:45 am]
BILLING CODE 6560-50-P


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Air Plan Approval; CO; Revisions to Colorado Procedural Rules and Common Provisions Regulation

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