Rule2025-20205
Air Plan Approval; Colorado; Inspection and Maintenance Program Revision
Primary source
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Published
November 18, 2025
Effective
December 18, 2025
Issuing agencies
Environmental Protection Agency
Abstract
The Environmental Protection Agency (EPA) is approving a revision to the Colorado State Implementation Plan (SIP). The revision includes changes to the motor vehicle inspection and maintenance (I/M) program of the State of Colorado. The EPA is taking this action pursuant to the Clean Air Act (CAA).
Full Text
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<title>Federal Register, Volume 90 Issue 220 (Tuesday, November 18, 2025)</title>
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[Federal Register Volume 90, Number 220 (Tuesday, November 18, 2025)]
[Rules and Regulations]
[Pages 51515-51517]
From the Federal Register Online via the Government Publishing Office [<a href="http://www.gpo.gov">www.gpo.gov</a>]
[FR Doc No: 2025-20205]
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ENVIRONMENTAL PROTECTION AGENCY
40 CFR Part 52
[EPA-R08-OAR-2024-0468; FRL-12884-02-R8]
Air Plan Approval; Colorado; Inspection and Maintenance Program
Revision
AGENCY: Environmental Protection Agency (EPA).
ACTION: Final rule.
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SUMMARY: The Environmental Protection Agency (EPA) is approving a
revision to the Colorado State Implementation Plan (SIP). The revision
includes changes to the motor vehicle inspection and maintenance (I/M)
program of the State of Colorado. The EPA is taking this action
pursuant to the Clean Air Act (CAA).
DATES: This rule is effective on December 18, 2025.
ADDRESSES: The EPA has established a docket for this action under
Docket ID No. EPA-R08-OAR-2024-0468. All documents in the docket are
listed on the <a href="http://www.regulations.gov">http://www.regulations.gov</a> website. 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, is not placed on the
internet and will be publicly available only in hard copy form.
Publicly available docket materials are available through <a href="http://www.regulations.gov">http://www.regulations.gov</a>, or please contact the person identified in the FOR
FURTHER INFORMATION CONTACT section for additional availability
information.
FOR FURTHER INFORMATION CONTACT: Gregory Lohrke, Air and Radiation
Division, EPA, Region 8, Mailcode 8ARD-IO, 1595 Wynkoop Street, Denver,
Colorado 80202-1129, (303) 312-6396, <a href="/cdn-cgi/l/email-protection#365a595e445d53185144535159444f7653465718515940"><span class="__cf_email__" data-cfemail="15797a7d677e703b726770727a676c557065743b727a63">[email protected]</span></a>.
SUPPLEMENTARY INFORMATION: Throughout this document ``we,'' ``us,'' and
``our'' means the EPA.
I. Background
The background for this action is discussed in detail in our August
7, 2025, proposal (90 FR 38088). In that document we proposed to
approve state-initiated revisions to the Colorado Air Quality Control
Commission's Regulation Number 11, ``Motor Vehicle Emissions Inspection
Program'' (hereafter, ``Regulation No. 11'') as a revision to the
Colorado SIP. Colorado submitted these changes to state regulation to
the EPA as a SIP revision on May 16, 2022. The Colorado I/M program is
maintained by the State and periodically revised for compliance with
the applicable program requirements for SIPs under CAA sections
182(a)(2)(B), 182(b)(4), and 182(c)(3) and the EPA's regulations under
40 CFR part 51, subpart S for certain nonattainment areas for the 2008
and 2015 ozone national ambient air quality standards (NAAQS).
In the EPA's August 7, 2025, proposed rule to approve Colorado's
SIP revision, we detailed the various changes to Regulation No. 11 and
the resultant effects on the state's I/M program. Proposed approval of
Colorado SIP revisions was limited to changes to Regulation No. 11,
Part A, Part B, Part C, and Part D, and did not consider any revisions
to state regulation which were submitted as ``state-only''
strengthening provisions that did not inhibit effectiveness of the I/M
program. The EPA's proposed approval documented our evaluation of the
substantive changes to the Colorado I/M program and found all revisions
submitted for federal approval to have no negative impact on emission
reduction benefits provided by the I/M program and to be consistent
with applicable CAA requirements.\1\ No comments were received on the
proposed approval of the Colorado SIP revision, adverse or otherwise.
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\1\ See CAA section 110(l).
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II. Final Action
The EPA is approving the changes to Colorado's Regulation 11.
Specifically, we are finalizing approval of Colorado SIP revisions
submitted to the EPA on May 16, 2022, amending Regulation No. 11, Part
A, sections I, II, IV, and V, Part B, section XI, Part C, sections II,
III, VIII, XI, and XII, and Part D, sections I, II, and III.
III. 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
Colorado Air Quality Control Commission regulations found in the Code
of Colorado Regulations (CCR) at 5 CCR 1001-13 as described in the
amendments to 40 CFR part 52 set forth below. The EPA has made, and
will continue to make, these materials generally available through
<a href="http://www.regulations.gov">www.regulations.gov</a> 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 SIP, 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.\2\
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\2\ 62 FR 27968 (May 22, 1997).
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IV. 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, 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:
<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
[[Page 51516]]
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 the 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 the 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).
List of Subjects in 40 CFR Part 52
Environmental protection, Air pollution control, Carbon monoxide,
Incorporation by reference, Intergovernmental relations, Nitrogen
oxides, Ozone, Reporting and recordkeeping requirements, Volatile
organic compounds.
Dated: October 29, 2025.
Cyrus M. Western,
Regional Administrator, Region 8.
For the reasons stated in the preamble, the Environmental
Protection Agency is amending 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 G--Colorado
0
2. In Sec. 52.320, the table in paragraph (c) is amended by:
0
a. Under the heading ``5 CCR 1001-13, Regulation Number 11, Motor
Vehicle Emissions Inspection Program--Part A, General Provisions, Area
of Applicability, Schedules for Obtaining Certification of Emissions
Control, Definitions, Exemptions, and Clean Screening/Remote Sensing'',
revising the entries ``I. Applicability'', ``II. Definitions'', ``IV.
Clean Screen/Remote Emissions Sensing'', and ``V. Expansion of the
Enhanced Emissions Program to the North Front Range Area'';
0
b. Under the heading ``5 CCR 1001-13, Regulation Number 11, Motor
Vehicle Emissions Inspection Program--Part B, Standards and Procedures
for the Approval, Operation, Gas Span Adjustment, Calibration and
Certification of the Division Approved Test Analyzer Systems for Use in
the Basic and Enhanced Areas and Test Analyzer Systems for Licensed
Dealers in the Enhanced Area'', adding entry ``XI. Requests for
Approval of Clean Screen Test Analyzer Systems'' in numerical order;
0
c. Under the heading ``5 CCR 1001-13, Regulation Number 11, Motor
Vehicle Emissions Inspection Program--Part C, Inspection Procedures and
Requirements for Exhaust Emissions, Fuel Evaporation Control, Visible
Smoke Emissions, Emissions Control Systems, On-Board Diagnostics (OBD);
and Practices to Ensure Proper Emissions Related Adjustments and
Repairs'', revising the entries ``II. Exhaust Emissions Inspection
Procedures'', ``III. Emissions Control Systems Inspection Procedures'',
``VIII. Certification of Emissions Control'', ``XI. Engine Changes'',
and ``XII. Clean Screen Inspection Program Procedures''; and
d. Under the heading ``5 CCR 1001-13, Regulation Number 11, Motor
Vehicle Emissions Inspection Program--Part D, Qualification and
Licensing of Emissions Mechanics, Emissions Inspectors and Clean Screen
Inspectors; Licensing of Emissions Inspection and Readjustment
Stations, Inspection-Only Stations, Inspection-Only Facilities, Fleets,
Motor Vehicle Dealer Test Facilities and Enhanced Inspection Centers;
Qualification of Clean Screen Inspection Sites; and Registration of
Emissions Related Repair Facilities and Technicians'', revising the
entries ``I. Licensing of Emissions Inspection and Readjustment
Stations, Inspection-Only Stations, Inspection-Only Facilities,
Enhanced Inspection Centers, Fleet Inspection Stations and Motor
Vehicle Dealer Test Facilities'', ``II. Qualification and Licensing of
Emission Mechanics, and Emissions Inspectors'', and ``III. Registration
of Emissions Related Repair Facilities''.
The revisions and addition read as follows:
Sec. 52.320 Identification of plan.
* * * * *
(c) * * *
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State EPA effective
Title effective date date Final rule citation/date Comments
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* * * * * * *
5 CCR 1001-13, Regulation Number 11, Motor Vehicle Emissions Inspection Program--Part A, General Provisions, Area of Applicability, Schedules for
Obtaining Certification of Emissions Control, Definitions, Exemptions, and Clean Screening/Remote Sensing
I. Applicability.................... 10/15/2021 12/18/2025 90 FR [insert Federal Register page ........................................
where the document begins], 11/18/2025.
II. Definitions..................... 10/15/2021 12/18/2025 90 FR [insert Federal Register page ........................................
where the document begins], 11/18/2025.
* * * * * * *
IV. Clean Screen/Remote Emissions 10/15/2021 12/18/2025 90 FR [insert Federal Register page ........................................
Sensing. where the document begins], 11/18/2025.
[[Page 51517]]
V. Expansion of the Enhanced 10/15/2021 12/18/2025 90 FR [insert Federal Register page ........................................
Emissions Program to the North where the document begins], 11/18/2025.
Front Range Area.
5 CCR 1001-13, Regulation Number 11, Motor Vehicle Emissions Inspection Program--Part B, Standards and Procedures for the Approval, Operation, Gas Span
Adjustment, Calibration and Certification of the Division Approved Test Analyzer Systems for Use in the Basic and Enhanced Areas and Test Analyzer
Systems for Licensed Dealers in the Enhanced Area
* * * * * * *
XI. Requests for Approval of Clean 10/15/2021 12/18/2025 90 FR [insert Federal Register page ........................................
Screen Test Analyzer Systems. where the document begins], 11/18/2025.
5 CCR 1001-13, Regulation Number 11, Motor Vehicle Emissions Inspection Program--Part C, Inspection Procedures and Requirements for Exhaust Emissions,
Fuel Evaporation Control, Visible Smoke Emissions, Emissions Control Systems, On-Board Diagnostics (OBD); and Practices to Ensure Proper Emissions
Related Adjustments and Repairs
* * * * * * *
II. Exhaust Emissions Inspection 10/15/2021 12/18/2025 90 FR [insert Federal Register page ........................................
Procedures. where the document begins], 11/18/2025.
III. Emissions Control Systems 10/15/2021 12/18/2025 90 FR [insert Federal Register page ........................................
Inspection Procedures. where the document begins], 11/18/2025.
* * * * * * *
VIII. Certification of Emissions 10/15/2021 12/18/2025 90 FR [insert Federal Register page ........................................
Control. where the document begins], 11/18/2025.
* * * * * * *
XI. Engine Changes.................. 10/15/2021 12/18/2025 90 FR [insert Federal Register page ........................................
where the document begins], 11/18/2025.
XII. Clean Screen Inspection Program 10/15/2021 12/18/2025 90 FR [insert Federal Register page ........................................
Procedures. where the document begins], 11/18/2025.
5 CCR 1001-13, Regulation Number 11, Motor Vehicle Emissions Inspection Program--Part D, Qualification and Licensing of Emissions Mechanics, Emissions
Inspectors and Clean Screen Inspectors; Licensing of Emissions Inspection and Readjustment Stations, Inspection-Only Stations, Inspection-Only
Facilities, Fleets, Motor Vehicle Dealer Test Facilities and Enhanced Inspection Centers; Qualification of Clean Screen Inspection Sites; and
Registration of Emissions Related Repair Facilities and Technicians
* * * * * * *
I. Licensing of Emissions Inspection 10/15/2021 12/18/2025 90 FR [insert Federal Register page ........................................
and Readjustment Stations, where the document begins], 11/18/2025.
Inspection-Only Stations,
Inspection-Only Facilities,
Enhanced Inspection Centers, Fleet
Inspection Stations and Motor
Vehicle Dealer Test Facilities.
II. Qualification and Licensing of 10/15/2021 12/18/2025 90 FR [insert Federal Register page ........................................
Emission Mechanics, and Emissions where the document begins], 11/18/2025.
Inspectors.
III. Registration of Emissions 10/15/2021 12/18/2025 90 FR [insert Federal Register page ........................................
Related Repair Facilities. where the document begins], 11/18/2025.
* * * * * * *
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[FR Doc. 2025-20205 Filed 11-17-25; 8:45 am]
BILLING CODE 6560-50-P
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