81_FR_53526 81 FR 53370 - Approval and Promulgation of Air Quality Implementation Plans; State of Colorado; Motor Vehicle Inspection and Maintenance, Clean Screen Program and the Low Emitter Index, On-Board Diagnostics, and Associated Revisions

81 FR 53370 - Approval and Promulgation of Air Quality Implementation Plans; State of Colorado; Motor Vehicle Inspection and Maintenance, Clean Screen Program and the Low Emitter Index, On-Board Diagnostics, and Associated Revisions

ENVIRONMENTAL PROTECTION AGENCY

Federal Register Volume 81, Issue 156 (August 12, 2016)

Page Range53370-53378
FR Document2016-18878

The Environmental Protection Agency (EPA) is proposing approval of three State Implementation Plan (SIP) revisions submitted by the State of Colorado. The revisions involve amendments to Colorado's Regulation Number 11 ``Motor Vehicle Emissions Inspection Program.'' The revisions address the implementation of the Low Emitter Index component of Regulation No. 11's Clean Screen Program, the implementation of the On-Board Diagnostics component of Regulation No. 11, and several other associated revisions. The EPA is proposing approval of these SIP revisions in accordance with the requirements of section 110 of the Clean Air Act (CAA).

Federal Register, Volume 81 Issue 156 (Friday, August 12, 2016)
[Federal Register Volume 81, Number 156 (Friday, August 12, 2016)]
[Proposed Rules]
[Pages 53370-53378]
From the Federal Register Online  [www.thefederalregister.org]
[FR Doc No: 2016-18878]


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ENVIRONMENTAL PROTECTION AGENCY

40 CFR Part 52

[EPA-R08-OAR-2016-0016; FRL-9950-37-Region 8]


Approval and Promulgation of Air Quality Implementation Plans; 
State of Colorado; Motor Vehicle Inspection and Maintenance, Clean 
Screen Program and the Low Emitter Index, On-Board Diagnostics, and 
Associated Revisions

AGENCY: Environmental Protection Agency (EPA).

ACTION: Proposed rule.

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SUMMARY: The Environmental Protection Agency (EPA) is proposing 
approval of three State Implementation Plan (SIP) revisions submitted 
by the State of Colorado. The revisions involve amendments to 
Colorado's Regulation Number 11 ``Motor Vehicle Emissions Inspection 
Program.'' The revisions address the implementation of the Low Emitter 
Index component of Regulation No. 11's Clean Screen Program, the 
implementation of the On-Board Diagnostics component of Regulation No. 
11, and several other associated revisions. The EPA is proposing 
approval of these SIP revisions in accordance with the requirements of 
section 110 of the Clean Air Act (CAA).

DATES: Written comments must be received on or before September 12, 
2016.

ADDRESSES: Submit your comments, identified by Docket ID No. EPA-R08-
OAR-2016-0016 at http://www.regulations.gov. Follow the online 
instructions for submitting comments. Once submitted, comments cannot 
be edited or removed from regulations.gov. 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 http://www2.epa.gov/dockets/commenting-epa-dockets.

FOR FURTHER INFORMATION CONTACT: Tim Russ, Air Program, EPA, Region 8, 
Mailcode 8P-AR, 1595 Wynkoop, Denver, Colorado 80202-1129, (303) 312-
6479, [email protected].

SUPPLEMENTARY INFORMATION: 

Table of Contents

I. General Information
II. Background
III. What was the State's process?
IV. EPA's Evaluation of the State's 2007 Revisions to the Low 
Emitter Index, Part A, Part C, Part F, and Appendix A
V. EPA's Evaluation of the State's 2012 Revisions to the On-Board 
Diagnostics Test, the Seven Model Year Emissions Test Exemption, the 
Gas Cap Retest, Part A, Part B, Part C, Part F, and Part G
VI. EPA's Evaluation of the State's 2013 Revisions to Part A, Part 
C, Appendix A, and Appendix B
VII. Conclusion
VIII. Consideration of Section 110(l) of the Clean Air Act
IX. Proposed Action
X. Incorporation by Reference
XI. Statutory and Executive Order Reviews

I. General Information

    What should I consider as I prepare my comments for the EPA?
    1. Submitting Confidential Business Information (CBI). Do not 
submit CBI to the EPA through http://www.regulations.gov or email. 
Clearly mark the part or all of the information that you claim to be 
CBI. For CBI information in a disk or CD ROM that you mail to the EPA, 
mark the outside of the disk or CD ROM as CBI and then identify 
electronically within the disk or CD ROM the specific information that 
is claimed as CBI. In addition to one complete version of the comment 
that includes information claimed as CBI, a copy of the comment that 
does not contain the information claimed as CBI must be submitted for 
inclusion in the public docket. Information so marked will not be 
disclosed except in accordance with procedures set forth in 40 CFR part 
2.
    2. Tips for preparing your comments. When submitting comments, 
remember to:
     Identify the rulemaking by docket number and other 
identifying information (subject heading, Federal Register volume, 
date, and page number);
     Follow directions and organize your comments;
     Explain why you agree or disagree;
     Suggest alternatives and substitute language for your 
requested changes;

[[Page 53371]]

     Describe any assumptions and provide any technical 
information and/or data that you used;
     If you estimate potential costs or burdens, explain how 
you arrived at your estimate in
    sufficient detail to allow for it to be reproduced;
     Provide specific examples to illustrate your concerns, and 
suggest alternatives;
     Explain your views as clearly as possible, avoiding the 
use of profanity or personal threats; and,
     Make sure to submit your comments by the comment period 
deadline identified.

II. Background

    In this action, the EPA is proposing approval of SIP revisions to 
Regulation No. 11 contained in three submittals from Colorado. The 
State's submittals were dated June 11, 2008, March 15, 2013, and March 
3, 2014. Much of the content of the revisions involved minor updates to 
several sections of Regulation No. 11 and deletion of obsolete 
language. The following background discussion involves those revisions 
of greater significance:

a.) Colorado's 2007 Revisions to Regulation No. 11 for the 
Implementation of the Low Emitter Index (LEI) Portion of the Clean 
Screen Program Contained in Regulation No. 11

    Colorado's Regulation No. 11 (hereafter ``Reg. No. 11'') addresses 
the implementation of the State's motor vehicle inspection and 
maintenance (I/M) program. The I/M program consists of an ``enhanced'' 
component that utilizes a dynamometer-based EPA IM240 test for 1982 and 
newer light-duty gasoline vehicles \1\ and a two-speed idle test (TSI) 
\2\ for 1981 and older light-duty gasoline vehicles. To improve 
motorist convenience and reduce program implementation costs, the State 
also administers a remote sensing-based ``Clean Screen'' program 
component of the I/M program. Remote sensing is a method for measuring 
vehicle emissions, while simultaneously photographing the license 
plate, when a vehicle passes through infrared or ultraviolet beams of 
light. Owners of vehicles meeting the Clean Screen criteria are 
notified by the County Clerk that their vehicles have passed the motor 
vehicle inspection process and are exempt from their next regularly 
scheduled IM240 test.
---------------------------------------------------------------------------

    \1\ See 40 CFR part 51, subpart S for a complete description of 
EPA's IM240 test. The IM240 test is essentially an enhanced motor 
vehicle emissions test to measure mass tailpipe emissions while the 
vehicle follows a computer generated driving cycle trace for 240 
seconds and while the vehicle is on a dynamometer.
    \2\ See 40 CFR part 51, subpart S for a complete description of 
EPA's two-speed idle test. The two-speed idle test essentially 
measures the mass tailpipe emissions of a stationary vehicle; one 
reading is at a normal idle of approximately 700 to 800 engine 
revolutions per minute (RPM) and one reading at 2,500 RPM.
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    The Clean Screen program component of Colorado's Reg. No. 11 was 
originally approved, for implementation in the Metro-Denver area, with 
the EPA's approval of the original Denver carbon monoxide (CO) 
redesignation to attainment and the maintenance plan (see: 66 FR 64751, 
December 14, 2001). The Clean Screen criteria that was approved in 2001 
by the EPA (see: 66 FR 64751, December 14, 2001) required two valid 
passing remote sensing readings on different days or from different 
sensors, that met the applicable emissions reading requirements in Part 
F of Reg. No. 11, within a twelve-month period in order to clean-screen 
a vehicle.
    Colorado revised Reg. No. 11 to expand the definition and 
requirements for a ``clean-screened vehicle'' to also include vehicles 
identified as low emitting vehicles in the state-determined Low 
Emitting Index (LEI) which have one passing remote sensing reading, 
prior to the vehicle's registration renewal date. As part of the LEI 
process, the Colorado Department of Public Health and Environment 
(CDPHE), Air Pollution Control Division (hereinafter, the ``Division'') 
develops an LEI on or before July 1st of each year. The LEI is based on 
a tabulation of the previous calendar year's IM240 inspection program 
results for specific make, model, and model year vehicles that passed 
IM240 vehicle inspections the previous year at a minimum rate of a 98%.
    By a letter dated June 11, 2008, the Governor of Colorado submitted 
the above 2007 Reg. No. 11 LEI revisions and other minor revisions 
involving changes/additions to the definitions in Reg. No. 11and the 
addition of Attachment 1 to the Technical Specifications in Appendix A. 
These SIP revisions are discussed in further detail below in section 
IV.

b.) Colorado's 2012 Revisions to Regulation No. 11 for the 
Implementation of the On-Board Diagnostics Test Requirements Contained 
in Regulation No. 11 and the Seven Model Year I/M Test Exemption

    As noted above, Colorado's Reg. No. 11 addresses the implementation 
of a motor vehicle I/M program that consists of a an ``enhanced'' 
component IM240 test for 1982 and newer light-duty vehicles and a TSI 
test for 1981 and older light-duty gas vehicles. In addition, and 
beginning in January 2015, Colorado also began implementing an On-Board 
Diagnostics (OBD) test for certain model year vehicles. An OBD I/M test 
essentially means the electronic retrieval, by connecting to the 
computer port data link connector (DLC) in the vehicle with an OBD test 
analyzer, of information from a vehicle's computer system. The 
electronic information retrieved addresses items such as stored 
readiness status, diagnostic trouble codes (DTC), malfunction indicator 
light (MIL) illumination and other data from a vehicle's OBD system. 
Electronically interrogating a vehicle's OBD system allows for the 
determination of whether any emission related DTCs are present and if 
the MIL is commanded on. Should these aspects of an OBD test be 
present, that would indicate the existence of an emissions related 
malfunction with the vehicle being tested.
    In addition, Colorado also extended the Reg. No. 11 exemption from 
I/M testing for new vehicles from four years to seven years. This 
revision was based on Colorado's gathering of emissions testing 
information over a period of several years which demonstrated that 
historically new and newer vehicles typically did not fail the IM240 or 
OBD emissions test within the first seven years of the vehicle's life.
    By a letter dated March 15, 2013, the Governor of Colorado 
submitted the above 2012 Reg. No. 11 OBD test requirements, the seven 
year test exemption, and other minor revisions. These SIP revisions are 
discussed in further detail below in section V.

c.) Colorado's 2013 Revisions to Regulation No. 11, Appendix A, 
Incorporation by Reference of Technical Materials, the Addition of New 
Technical Information/Requirements, and Minor Revisions to Appendix B

    Colorado further revised Reg. No. 11 by updating Appendix A and 
Appendix B to remove text and incorporate by reference certain 
Attachments to Appendix A, to add new language to Appendix A, and to 
add new language and remove obsolete language in Appendix B.
    Appendix A was revised to remove the text of three technical 
document attachments and to note that the documents are available at 
CDPHE's Emissions Technical Center Procedures Manual. The technical 
documents are incorporated by reference into Reg. No. 11. Appendix A. 
The technical documents that are incorporated by

[[Page 53372]]

reference into Reg. No. 11 are: Attachment I ``PDF 1000 Scanner,'' 
Attachment II ``Thermal Transfer Printer,'' and Attachment III 
``Colorado Automobile Dealers Transient Mode Test Analyzer System.'' 
Appendix A was also revised by adding Attachment V ``Specifications for 
Colorado On-Board Diagnostic (OBD) Stand-Alone Analyzer.''
    Appendix B, which is entitled ``Standards and Specifications for 
Calibration/Span Gas Suppliers,'' was revised with updated language in 
Section 1 ``Definitions,'' Section 2 ``Basic & Enhanced Idle Air 
Program/Technical Requirements,'' Section 3, ``Calibration/Span Gas 
Approval & Labeling,'' Section 4 ``Cylinder Tracking & Recall,'' 
Section 5 ``Enhanced IM & IG 240 Air Program/Technical Requirements,'' 
Section 6 ``Colorado Approval Process,'' and Section 7 ``Blender 
Facility Requirements & Documentation.'' Obsolete language was also 
removed from Appendix B.
    By a letter dated March 3, 2014, the Governor of Colorado submitted 
the above 2013 Reg. No. 11 revisions to Appendix A and Appendix B. 
These SIP revisions are discussed in further detail below in section 
VI.

III. What was the State's process?

    Section 110(a)(2) of the CAA requires that a state provide 
reasonable notice and public hearing before adopting a SIP revision and 
submitting it to us.

a.) The State's June 11, 2008 SIP Submittal

    On June 21, 2007 the Colorado Air Quality Control Commission (AQCC) 
conducted a public hearing to consider the adoption of revisions and 
additions to the Colorado SIP. The revisions affecting the SIP involved 
Reg. No. 11, the Clean Screen sections of Reg. No. 11, the LEI portion 
of the Clean Screen program, and associated revisions. After reviewing 
written comments, dated April 17, 2007, received from Rocky Mountain 
Clean Air Action and after conducting a public hearing, the AQCC 
adopted the proposed revisions to Reg. No. 11 on June 21, 2007. The SIP 
revisions became State effective on August 30, 2007.
    We evaluated the State's June 11, 2008 submittal for Reg. No. 11 of 
the SIP and determined that the State met the requirements for 
reasonable notice and public hearing under section 110(a)(2) of the 
CAA. By a letter dated October 14, 2008, we advised James B. Martin, 
Executive Director of the CDPHE, that the SIP revisions submittal was 
deemed to have met the minimum ``completeness'' criteria found in 40 
CFR part 51, Appendix V.

b.) The State's March 15, 2013 SIP Submittal

    On December 20, 2012, the AQCC conducted a public hearing to 
consider the adoption of revisions and additions to the Colorado SIP. 
The revisions affecting the SIP involved Reg. No. 11, the OBD program, 
the seven model year exemption from I/M testing, and associated 
revisions. After reviewing one supportive email written comment, dated 
December 16, 2012, received from Bob Armott and after conducting a 
public hearing, the AQCC adopted the proposed revisions to Reg. No. 11 
on December 20, 2012. The SIP revisions became State effective on 
February 15, 2013.
    We evaluated the State's March 15, 2013 submittal for Reg. No. 11 
of the SIP and determined that the State met the requirements for 
reasonable notice and public hearing under section 110(a)(2) of the 
CAA. By operation of law under section 110(k)(1)(B) of the CAA, the 
State's March 15, 2013 submittal was deemed complete on September 15, 
2013.

c.) The State's March 3, 2014 SIP Submittal

    On November 21, 2013, the AQCC conducted a public hearing to 
consider the adoption of revisions and additions to the Colorado SIP. 
The revisions affecting the SIP included updating Appendix A and 
Appendix B to Reg. No. 11 to remove text, incorporate by reference 
certain Attachments to Appendix A, to add new language to Appendix A, 
and to add new language and remove obsolete language in Appendix B. 
After conducting a public hearing, which did not have any public 
comments, the AQCC adopted the proposed revisions to Reg. No. 11 on 
November 21, 2013. The SIP revisions became State effective on December 
30, 2013.
    We evaluated the State's March 3, 2014 submittal for Reg. No. 11 of 
the SIP and determined that the State met the requirements for 
reasonable notice and public hearing under section 110(a)(2) of the 
CAA. By operation of law under section 110(k)(1)(B) of the CAA, the 
State's March 3, 2014 submittal was deemed complete on September 3, 
2014.

IV. EPA's Evaluation of the State's 2007 Revisions to the Low Emitter 
Index, Part A, Part C, Part F, and Appendix A

a.) Evaluation of the Clean Screen Program and LEI Component

    We approved the Clean Screen program component of Colorado's Reg. 
No. 11, for implementation in the Metro-Denver area with our approval 
of the original Denver carbon monoxide (CO) redesignation to attainment 
and the associated maintenance plan (see: 66 FR 64751, December 14, 
2001). Additional discussion of the Clean Screen program was provided 
in our August 22, 2001 proposed rule (66 FR 44097). In evaluating the 
Clean Screen program for the maintenance plan, the State used EPA's 
MOBILE5b motor vehicle emissions calculation model and the MOBILE 
model's remote sensing program credit utility dated 1996 \3\ and 
revised in 1998.\4\ Further discussion is also provided in the State's 
Technical Support Document (TSD) for the 2001 CO redesignation to 
attainment, which is part of the EPA's final rule hard copy docket, and 
is also available from the State on-line at: http://www.colorado.gov/airquality/tech_doc_repository.aspx?action=open&file=codenfnl.pdf).
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    \3\ ``User Guide and Description For Interim Remote Sensing 
Program Utility,'' EPA/AA/AMD/EIG/96-01, dated September, 1996.
    \4\ ``Program User Guide for Interim Vehicle Clean Screening 
Credit Utility,'' Draft Report, EPA420-P-98-007, dated May, 1998.
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    For the Reg. No. 11 revisions that we approved on December 14, 
2001, the State used the above tools and other data to evaluate the 
Clean Screen program for its implementation in the Metro-Denver area. 
Based on this evaluation and the review of information for the 
additional implementation of a Clean Screen program in Fort Collins 
(located in Larimer County, Colorado) and Greeley (located in Weld 
County, Colorado), the state concluded there would be an approximate 4% 
disbenefit for CO emissions and a 7% disbenefit for hydrocarbon (HC) 
emissions if it was assumed that 35% of the eligible vehicles were 
clean-screened.\5\
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    \5\ ``Revised Final Economic Impact Analysis for Inspection and 
Maintenance per C.R.S. 25-7-110.5(4)(I), Cost Effectiveness Economic 
Impact Analysis, 2/1/99.''
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    We note that the version of Reg. No. 11 that the EPA approved on 
December 14, 2001 included the Clean Screen criteria which required an 
eligible vehicle for inspection to have at least two consecutive 
passing remote sensing emissions readings performed on different days, 
or at different approved Clean Screen inspection sites, prior to its 
registration renewal date.
    With the 2007 Reg. No. 11 revisions, the AQCC adopted modifications 
as proposed by the Division that expanded the Clean Screen criteria to 
also include vehicles with one passing remote sensing reading prior to 
its registration

[[Page 53373]]

date and that the vehicle is identified as a low emitter on the LEI. To 
address the LEI criteria of this revised Clean Screen process, the 
Division develops a low emitting vehicle index on or before July 1st of 
each year based on a tabulation of the previous calendar year's IM240 
inspection program results for specified make, model and model year 
vehicles. This LEI is comprised of specific make, model and model year 
vehicles that passed IM240 vehicle inspections the previous year at a 
minimum of a 98% rate. However, in developing the LEI, the Division may 
use passing criteria greater than 98% if necessary to ensure that the 
use of the LEI is equivalent or better than the use of a second remote 
sensing measurement in terms of air quality benefits. This process is 
more fully detailed in the CPDHE May, 2007 document entitled 
``Development and Evaluation of Colorado's Low Emitter Index.''
    To assess the State's Clean Screen program and its LEI component, 
the EPA reviewed the available CDPHE Clean Screen annual reports for 
2009,\6\ 2011,\7\ 2012,\8\ and 2013.\9\ The annual reports detailed the 
overall effectiveness of the Clean Screen program and also contained 
the results of the random 2% sampling for the LEI component. This 
sampling procedure involved retaining 2% of the vehicles which had been 
shown to pass one measurement with RSD equipment and been on the LEI 
index, and then requiring them to take an IM240 test for comparison. 
The data, including fleet coverage and emissions reduction retention, 
are presented below in Tables 1 and 2:
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    \6\ ``The Colorado Remote Sensing Program January-December, 
2009,'' Colorado Department of Public Health and Environment, July, 
2010.
    \7\ ``The Colorado Remote Sensing Program January-December, 
2011,'' Colorado Department of Public Health and Environment, 
November, 2012.
    \8\ ``The Colorado Remote Sensing Program January-December, 
2012,'' Colorado Department of Public Health and Environment, 
December, 2013.
    \9\ ``The Colorado Remote Sensing Program January-December, 
2013,'' Colorado Department of Public Health and Environment, 
September, 2014.

                          Table 1--Total Vehicles Inspected and Vehicles Clean-Screened
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                                                                                                    Percent of
                                                                                   Vehicles that  total vehicles
                   Year of clean screen report                    Total vehicles    were clean-      that were
                                                                     inspected       screened     clean-screened
                                                                                                        (%)
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2009............................................................         899,646         199,344            22.0
2011............................................................       1,156,949         246,768            21.3
2012............................................................       1,150,562         248,224            21.6
2013............................................................       1,184,875         233,760            19.7
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                Table 2--Estimated Clean Screen Disbenefit--Based on Retained Emission Reductions
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                                                                    Retained HC     Retained CO    Retained NOX*
                   Year of clean screen report                       emission        emission        emission
                                                                  reductions (%)  reductions (%)  reductions (%)
----------------------------------------------------------------------------------------------------------------
2009............................................................            94.6            98.1            92.9
2011............................................................            96.1            98.1            97.3
2012............................................................            94.8            97.1            93.9
2013............................................................            97.3            96.7            97.6
                                                                 -----------------------------------------------
Average Clean Screen Disbenefit.................................             4.3             2.5             4.6
----------------------------------------------------------------------------------------------------------------
* Nitrogen Oxides.

    The data from the State's Clean Screen reports, as excerpted and 
presented in the above tables, demonstrate that the disbenefit from the 
Clean Screen program and its LEI component continue to be within the 
original estimates from the Reg. No. 11 revisions that we approved on 
December 14, 2001. Although those original 2001 disbenefit estimates 
(4% for CO, 7% for HC, and assuming 35% clean-screened vehicles) were 
prepared with then current tools, the Clean Screen program and LEI 
component continue to perform within those estimates. Also, from the 
above four years of Clean Screen annual reports that we evaluated, the 
State's Reg. No. 11 revisions original estimate of 35% of the fleet 
being clean-screened has not been achieved. Based on the four 
referenced Clean Screen reports, we note that 22% or less of the 
eligible vehicles have been clean-screened. Therefore, the actual 
emission reduction disbenefit has been less than predicted, as more 
vehicles have then been required to go through the IM240 test.

b.) The Sections of Reg. No. 11 That Were Revised With the State's June 
11, 2008 Submittal Were as Follows:

    1.) Part A, section II: Modify definition number 15 ``Clean 
Screened Vehicle'' to reflect the addition of the LEI; modify 
definition number 17 ``Colorado '4'' to clarify the use of the BAR 90 
test analyzer systems for use after 1994; and add a new definition 
``Low Emitting Vehicle Index.'' Renumber definitions number 18 and 
higher.
    2.) Part C, section XII: Modify section XIIA.3 regarding the 
requirements and procedures to clean screen an eligible vehicle and add 
section XIIE.4 regarding low emitting vehicles and the LEI.
    3.) Part F, section VI: Renumber section VI.B as VI.C; add new 
section VI.B.1 which requires the development of the LEI each year; add 
new section VI.B.2 which establishes the 98% minimum passing criteria 
for the LEI; and add new section VI.B.3 which allows the Division to 
use a greater than 98% passing criteria if needed to equate to a second 
RSD reading.
    4.) Appendix A, Technical Specifications, Attachment 1: Sections

[[Page 53374]]

of Attachment 1 of the Technical Specifications contain the 
specifications for the PDF 1000 Scanner; some sections were unreadable 
and a full, retyped PDF 1000 Scanner section was provided.
    5.) Appendix A, Technical Specifications, Attachment 2: Sections of 
Attachment 2 of the Technical Specifications contain the specifications 
for the Thermal Transfer Printer; some sections were unreadable and a 
full, retyped Thermal Transfer Printer section was provided.
    The EPA notes that Part F, section III.A.2 of Reg. No. 11 was also 
provided with the State's June 11, 2008 submittal. This section 
contains IM240 test light duty vehicle emissions cutpoints for 1996 and 
newer vehicles (all in grams per mile). The CO, HC, and NOX 
entries for calendar year 2006 are incorrect as the State had 
previously provided an August 8, 2006 SIP revision submittal to remove 
these 2006 cutpoints (i.e., HC 0.6, CO 10.0, and NOX 1.5). 
The EPA approved the removal of these 2006 cutpoints on December 20, 
2012 (77 FR 75388).

V. EPA's Evaluation of the State's 2012 Revisions to the On-Board 
Diagnostics Test, the Seven Model Year Emissions Test Exemption, the 
Gas Cap Retest, Part A, Part B, Part C, Part F, and Part G

a.) Evaluation of the OBD Test Provisions

    As we noted above, beginning in January 2015, Colorado began 
implementing an OBD test for certain model year vehicles. An OBD I/M 
test essentially means the electronic retrieval, by connecting to the 
computer port DLC in the vehicle with an OBD test analyzer, of 
information from a vehicle's computer system addressing items such as 
stored readiness status, DTCs, MIL illumination and other information 
from a vehicle's OBD system. Electronically interrogating a vehicle's 
OBD system allows for the determination if any emission related DTCs 
are present and if the MIL is commanded on. Should these aspects of an 
OBD test be present, that would indicate the existence of an emissions 
related malfunction with the vehicle being tested. More detailed 
information on OBD I/M testing is found in 40 CFR 85, Subpart W and at 
the EPA's Office of Transportation and Air Quality (OTAQ) Web site at: 
http://www3.epa.gov/obd/regtech/inspection.htm. In addition, further 
information is provided in the EPA's OBD rulemaking actions of April 5, 
2001 (66 FR 18156), December 20, 2005 (70 FR 75403), and the EPA's 
document addressing performing OBD system checks as part of an I/M 
program.\10\
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    \10\ ``Performing Onboard Diagnostic System Checks as Part of a 
Vehicle Inspection and Maintenance Program,'' EPA-420-R-01-015, 
dated June, 2001.
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    The EPA has reviewed the OBD information in the State's 
Administrative documentation with its March 15, 2013 submittal, the OBD 
I/M test procedures contained in the Reg. No. 11 revisions to Part A, 
Part B, Part C, and Part F, all as detailed further below, and has 
concluded these revisions meet the requirements of 40 CFR 85, Subpart W 
for OBD I/M testing and the above cited EPA final rules.
    We note the Colorado OBD test provisions that were adopted in 2012 
are applicable to a portion of the vehicles that are subject to an I/M 
test. The Reg. No. 11 revisions of 2012 also increased the new vehicle 
model year exemption from four to seven years, required OBD testing for 
the next four years (two inspection cycles for the 8th through 11th 
years), and required I/M 240 testing to commence with the third 
inspection cycle. In addition, the Reg. No. 11 revisions of 2012 
allowed OBD testing for OBD equipped vehicles that were otherwise hard 
to test with the IM240 procedures (for example, too short of a 
wheelbase for the dynamometer treadmills, vehicles with very large or 
small wheel/tire combinations, and certain all-wheel-drive vehicles 
with very sensitive traction control systems), eliminated the visual 
inspection for 1996 and newer vehicles (because of OBD testing), and 
required a full emissions retest for vehicles initially failing the gas 
cap test. The 2012 Reg. No. 11 revisions retained other aspects of the 
I/M program including the use of Clean Screen technology to clean 
screen vehicles and annual TSI testing for 1981 and older vehicles.
    In consideration of the OBD testing component of the I/M program 
and the extension from four years to seven years to exempt new vehicles 
from I/M testing (discussed further below), the State prepared an 
estimated emissions benefit for the implementation of both the OBD 
testing and extended test exemption for seven years. This estimated 
emissions benefit information is contained in the Administrative 
Documentation, that is part of the State's March 15, 2013 SIP 
submittal, and is provided in the section entitled ``SIP Emission 
Reduction Equivalency Demonstration.'' The information notes that the 
Division conducted modeling of the 2012 revisions using the then 
current I/M program, as implemented in the seven Metro-Denver counties 
area, and the new program (OBD plus the seven-year testing exemption) 
as fully implemented in 2017. The year 2017 was selected as that would 
reflect the full completion of a two-year OBD inspection cycle on 
applicable vehicles. The Division's results are provided below in Table 
3:

                Table 3--Seven County Metro-Denver Area I/M Program Estimated Reductions in 2017
----------------------------------------------------------------------------------------------------------------
                                              TGH *                      NOX                       CO
----------------------------------------------------------------------------------------------------------------
Current I/M Program...............  6.008 tpd **............  4.849 tpd...............  68.843 tpd.
Revised I/M Program...............  6.052...................  5.004...................  64.916.
----------------------------------------------------------------------------------------------------------------
*Total Gaseous Hydrocarbons.
**tons per day (tpd).

    As shown in Table 3 above, implementation of the Reg. No. 11 
provisions of the OBD component and the seven-year exemption from I/M 
testing were estimated to result in a small increase in CO emissions 
and a slight reduction in ozone precursor emissions (NOX and 
TGH).
    The EPA has evaluated this negligible increase in estimated CO 
emissions and has concluded it will not have a detrimental effect on 
the most recently-approved revised Metro-Denver CO maintenance plan (72 
FR 46148, August 17, 2007).\11\ Our evaluation considered the 
negligible increase in CO emissions of four tpd to the CO mobile 
sources emission inventory data in the Metro-

[[Page 53375]]

Denver maintenance plan for the projected 2015 mobile source CO 
emissions of 1,416 tpd and the maintenance plan's final maintenance 
year of 2021 projected mobile source CO emissions of 1,372.10 tpd. The 
four tpd emissions would be 0.28% of the 2015 CO mobile source 
emissions and 0.29% of the 2021 CO mobile source emissions. In 
addition, we also reviewed state-certified and EPA-reviewed ambient CO 
air quality monitoring data that are located in the EPA's Air Quality 
System (AQS) database. We reviewed data from 2007 through 2015. We did 
not find any exceedances or violations of the CO National Ambient Air 
Quality Standards (NAAQS). Therefore, the Metro-Denver CO maintenance 
area continues to demonstrate maintenance of the CO NAAQS.
---------------------------------------------------------------------------

    \11\ ``Approval and Promulgation of Air Quality Implementation 
Plans; State of Colorado; Revised Denver and Longmont Carbon 
Monoxide Maintenance Plans, and Approval of Related Revisions,'' 72 
FR 46148, dated August 17, 2007.
---------------------------------------------------------------------------

    We do note that the slight reduction in ozone precursor emissions 
of NOX and TGH will be beneficial as the Metro-Denver/North 
Front Range (NFR) 2008 8-hour ozone NAAQS nonattainment area continues 
to work towards attainment of that NAAQS. Additional information 
regarding the Metro Denver/NFR ozone nonattainment area and its status 
can be found in the EPA's 2008 ozone NAAQS proposed SIP Requirements 
rule (80 FR 51992, August 27, 2015) \12\ and final rule (81 FR 26697, 
May 4, 2016).\13\
---------------------------------------------------------------------------

    \12\ ``Determinations of Attainment by the Attainment Date, 
Extensions of the Attainment Date, and Reclassification of Several 
Areas Classified as Marginal for the 2008 Ozone National Ambient Air 
Quality Standards,'' 80 FR 51992, dated August 27, 2015.
    \13\ ``Determinations of Attainment by the Attainment Date, 
Extensions of the Attainment Date, and Reclassification of Several 
Areas Classified as Marginal for the 2008 Ozone National Ambient Air 
Quality Standards,'' 81 FR 26697, dated May 4, 2016.
---------------------------------------------------------------------------

b.) Evaluation of the Extension of the I/M Test Exemption From Four to 
Seven Years

    Included with the March 15, 2013 Reg. No. 11 SIP revision submittal 
were revised provisions to increase the I/M test exemption for newer 
vehicles from the EPA-approved four-year exemption to seven years. 
Additional information and rationale were provided by the Division in 
the ``Air Quality Control Commission Regulation Number 11 Motor Vehicle 
Emissions Detailed Issue Statement'' which was part of the SIP 
submittal's Administrative Documentation.
    The Division's AQCC issue statement noted that the revision to Reg. 
No. 11, to increase new vehicle model year exemptions from four years 
to seven years, was allowed by Colorado law which authorizes the AQCC 
to extend the duration for which new vehicles are exempt from I/M 
testing; 42-4-310(1)(a)(II)(C) and 42-4-306(8)(b), Colorado Revised 
Statute (C.R.S.)
    The Division noted that the revision to extend the new vehicle 
model year exemption results in an overall cost savings and increased 
convenience to the public for tests not performed. In addition, the 
Division stated that the population of vehicles in this age group, and 
their vehicle miles traveled, are relatively high; however, since they 
are relatively new vehicles, their emissions are lower than those of 
older vehicles.
    The Division concluded that increasing the duration of the new 
vehicle exemption increases emissions from the entire fleet. However, 
the EPA notes that with this particular revision to Reg. No. 11, the 
State simultaneously included revisions to Reg. No. 11 to initiate OBD 
testing requirements for applicable vehicles. As discussed above and as 
presented in Table 3 above, the net result of the implementation of 
both the seven-year extended exemption for I/M test and OBD testing 
showed a negligible increase of CO emissions and a slight decrease in 
NOX and TGH emissions. Based on our above analysis of the 
Metro-Denver CO maintenance plan and relevant ambient CO air quality 
monitoring data, the EPA finds that the increase in the new vehicle 
seven-year I/M test exemption will not have an adverse effect on the 
approved revised Metro-Denver CO maintenance plan (72 FR 46148, August 
17, 2007). We also find that the emissions from the revised seven-year 
I/M test exemption are offset by the additional reduction in ozone 
precursor emissions of NOX and TGH realized through the 
State's implementation of OBD testing that covers the Metro-Denver/NFR 
2008 8-hour ozone NAAQS nonattainment area.

c.) Gas Cap Full Retest Clarification and Other Minor Non-Substantive 
Revisions

    There was a clarification to the gas cap test requirements and 
several other minor revisions included with the March 15, 2013 Reg. No. 
11 SIP revision submittal.
    The state revised Reg. No. 11 to clarify that, in accordance with 
federal law, a full I/M retest is required after a test failure due to 
the lack of a gas cap or a faulty gas cap. The EPA notes that missing 
or malfunctioning gas caps automatically cause a test failure and 
require replacement of the cap and then a full emissions retest. The 
full retest is necessary because the gas cap seals and pressurizes the 
entire fuel evaporative emissions control system. If other components 
of the evaporative system are functional, there will be no effect on 
tailpipe emissions; however, if other elements of the evaporative 
system are faulty replacing a faulty or missing gas cap can trigger a 
tailpipe emissions failure. In addition, the inclusion or replacement 
of a malfunctioning gas cap will reduce emissions of volatile organic 
compounds (VOC) from a vehicle's fuel tank. This is a beneficial as 
VOCs are a precursor emission to the formation of ground level ozone.
    The Reg. No. 11 revisions also include several `housekeeping' items 
including: Correcting typographical and grammatical errors; deleting 
obsolete language and implementation dates; removing titles and text 
that were inadvertently left unchanged from prior Reg. No. 11 changes; 
and renumbering and recodifications according to adopted language 
additions and deletions.

d.) The Sections of Reg. No. 11 That Were Revised With the State's 
March 15, 2013 Submittal Were as Follows:

    1.) Part A, section I: Minor wording changes to add new language 
and remove obsolete language in sections I.B, I.C.3, I.C.3.a, I.C.3.b, 
I.C.3.c, I.C.4, I.C.7, I.C.7.c, I.C.8, and I.C.9.b.
    Part A, section II: A new definition number 20 was added entitled 
``Colorado On-Board Diagnostic (OBD) Test Analyzer System;'' a new 
definition number 22 was added entitled ``Diagnostic Trouble Code 
(DTC);'' and, definitions number 23 to 43 were renumbered. A new 
definition number 44 was added and entitled ``On-Board Diagnostics II 
(OBD or OBDII) Test'' and definitions numbered 45 to 52 were 
renumbered.
    Part A, section IV: Section IV. D was removed which involved 
obsolete language and section IV.E was renumbered IV.D and also had 
obsolete language removed.
    2.) Part B, section IX: Section IX was added and is entitled 
``Approval of the Colorado On-Board Diagnostic (OBD) Test Analyzer 
System. Also, Part B, section X was added and is entitled ``The 
Colorado On-Board Diagnostic (OBD) Test Analyzer System.''
    3.) Part C, title: The title was modified by adding ``On-Board 
Diagnostics (OBD).''
    Part C, section I.C.3: This involved minor language changes to 
clarify data transmission and analyzer requirements.
    Part C, section II.A: This section was renumbered from II.A through 
II.F to instead become II.A.1 through II.A.11. Minor clarification 
language was added along with revised references to sections in Part C.
    Part C, section II.G: This section was renumbered to II.B and 
clarifying

[[Page 53376]]

language was added regarding OBD testing. Sections II.G.1 through 
II.G.6 were renumbered II.B.1 through II.B.6. Section II.B.4 had 
clarifying language added regarding applicable vehicles that were 
unable to be tested with the IM240 test would then be OBD tested.
    Part C, section II.C: A new section II.C (II.C 1 through II.C.9) 
was added which specifies which vehicles are to be OBD tested and the 
requirements and testing procedures for an OBD test.
    Part C, section III.A: This section had clarifying language added 
and sections III.B and III.C were removed as they addressed the model 
year 1996 and newer visual inspection procedures. The remaining 
applicable portions of section III.C were then renumbered III.B. 
Sections III.D and III.E were renumbered to III.C and III.D.
    Part C, section IV: A new section IV was added which addressed the 
requirements for applicable vehicles (1996 through those vehicles that 
had reached their 11th model year of age) to be evaluated with and OBD 
test.
    Part C, prior section IV: The existing section IV was renumbered 
section V and also modified with clarifying language regarding the 
requirement for a full retest of vehicles which previously had a 
missing or malfunctioning gas cap.
    Part C, section VIII.A.2: A new section VIII.A.2 was added which 
states that vehicles in their model years seven through 10 need to meet 
the OBD passing criteria in Part F, section VII. Sections VIII.A.2 
through VIII.A.4 were renumbered VIII.A.3 through VIII.A.5.
    Part C, sections VIII.B.1, VIII.B.2, and VIII.B.3: These sections 
had minor wording changes and deletion of obsolete language.
    Part C, sections VIII.D.A through VIII.D.E: These sections were 
renumbered VIII.D.1 through VIII.D.5.
    Part C, sections IX.G and X.A: These sections had minor clarifying 
language added.
    4.) Part F, section V: This section was entitled ``Visible Smoke.''
    Part F, section VII: A new section VII was added (sections VII.A 
through VII.F) which stated the required OBD diagnostic inspection test 
passing criteria.
    5.) Part G: This part had previously contained obsolete high-
emitting vehicle identification pilot project language which was 
removed and Part G was retitled ``Reserved.''

VI. EPA's Evaluation of the State's 2013 Revisions to Part A, Part C, 
Appendix A, and Appendix B

    In 2013, the AQCC adopted several minor changes to Reg. No. 11. 
These revisions were subsequently submitted to the EPA on March 3, 
2014. The sections of Reg. No. 11 that were revised with the State's 
March 3, 2014 submittal were as follows:
    a.) Part A, section I.C.3.c: This section was revised to clarify 
that the seven year new vehicle exemption, which excused vehicles from 
an I/M test for seven years and was previously adopted by the AQCC in 
December 2012, would take effect on January 1, 2015. Also, this 
exemption would apply retroactively to existing vehicles in their 
fourth, fifth, and sixth years of service.
    b.) Part A, sections I.C.8, I.C.9, and I.C.10: These sections were 
revised to clarify ambiguous, contradictory and obsolete Reg. No. 11 
language concerning the issuance of and duration periods for 
``Verification of Emissions Test'' exemption windshield stickers issued 
by motor vehicle dealers. Part A, section I.C.8 was further clarified 
to note that vehicles in their fourth, fifth, and sixth years of 
service would have the seven year exemption applied retroactively.
    c.) Part A, section I.C.3 and Part C, sections III and IV: These 
sections were revised to clarify that the seven-year new vehicle 
exemption from I/M testing, OBD testing requirements and procedures, 
and other changes made to Reg. No. 11 by the AQCC in December 2012, 
would go into effect January 1, 2015. In addition, the I/M visual 
inspection procedures for 1996 and newer vehicles would be retained 
through December 2014.
    d.) Part C, section C VIII.B.3: This section was revised to codify 
in Reg. No. 11 the vehicle emissions repair cost waiver amount of $715. 
The AQCC has previously directed the Division to change the amount from 
$450 to $715 in November 2002, which was done. However, at that time, 
the AQCC had declined to note the changed repair amount in the text of 
Reg. No. 11.
    e.) Part C, section VIII.D.4: This section was revised regarding 
the qualifying criteria for an economic hardship waiver for a vehicle 
failing its emissions test. Section VIII.D.4 was further revised to 
allow the economic hardship waiver to apply to households owning two 
vehicles rather than restricting hardship waivers to households owning 
only one vehicle.
    f.) Appendix A of Reg. No. 11 was revised as follows:
    1.) Appendix A was revised to remove the text of three technical 
document attachments and to note that the documents are available at 
CDPHE's Emissions Technical Center Procedures Manual. The technical 
documents are incorporated by reference into Reg. No. 11. Appendix A. 
The technical documents that are incorporated by reference into Reg. 
No. 11 are: Attachment I ``PDF 1000 Scanner,'' Attachment II ``Thermal 
Transfer Printer,'' and Attachment III ``Colorado Automobile Dealers 
Transient Mode Test Analyzer System.''
    2.) Updated Attachment IV, entitled ``Colorado Department of Public 
Health and Environment Specification for Colorado 97 Analyzer,'' to 
reflect technological changes to data specifications, communications 
protocols, and forms generation.
    3.) Included a new Attachment V ``Test Analyzer Specification for 
On-board Diagnostics'' for licensed fleets who self-inspect their own 
vehicles. Note: Part B section X required this Test Analyzer 
Specification to be in place by December 31, 2013.
    g.) Appendix B of Reg. No. 11 was revised as follows:
    1.) Attachment II; the ``Calibration Span Gas'' labels were updated 
to reflect the current version of the State-official labels.
    h.) Overall revised formatting and other non-substantive changes 
were made throughout Reg. No. 11.

VII. Conclusion

    Our review of the State's Reg. No. 11 revisions, as presented above 
in sections IV, V, and VI, involved: 1.) The Low Emitter Index (LEI) 
and Clean Screen program components, 2.) The On-Board Diagnostics (OBD) 
I/M testing program component, 3.) The seven model-year exemption from 
I/M testing provisions, 4.) The requirement for a full I/M retest after 
the replacement of a missing or malfunctioning gas cap, 5.) New 
definitions, clarification language, and removal of obsolete language, 
6.) Numerous revisions to Reg. No. 11 Parts A, B, C, F, G, Appendix A, 
and Appendix B, and 7.) Overall formatting, correction of typographic 
errors and other non-substantive changes. Based on our review and 
evaluation discussion presented above, we have determined that the Reg. 
No. 11 SIP revisions, submitted by the State in letters dated June 11, 
2008, March 15, 2013 and March 3, 2014 sufficiently address applicable 
provisions in 40 CFR 51, Subpart S, 40 CFR 85, Subpart W, and 
applicable EPA guidance for I/M programs and that our approval is 
warranted.

VIII. Consideration of Section 110(1) of the Clean Air Act

    Section 110(1) of the CAA states that a SIP revision cannot be 
approved if the revision would interfere with any applicable 
requirement concerning

[[Page 53377]]

attainment and reasonable further progress towards attainment of a 
NAAQS or any other applicable requirement of the CAA. The only portions 
of the Reg. No. 11 revisions that we described above which we believe 
require further consideration with regard to section 110(l) of the CAA 
are the revisions to the Clean Screen program to add the LEI component 
and the seven-year I/M test exemption.
    For the LEI component of the Clean Screen program, we noted above 
that with our December 14, 2001 approval the Metro-Denver CO 
maintenance plan and implementation of the Clean Screen program as 
adopted at that time, the State concluded there would be an approximate 
4% disbenefit for CO emissions and a 7% disbenefit for HC emissions if 
it was assumed that 35% of the eligible vehicles were clean-screened. 
Our further evaluation of the LEI component of the Clean Screen 
program, as discussed above in section IV, involved the review of the 
State's Clean Screen annual reports for 2009, 2011, 2012 and 2013. The 
annual reports detailed the overall effectiveness of the Clean Screen 
program and also contained the results of the random 2% sampling for 
the LEI component. The data from the State's Clean Screen reports 
demonstrate that the disbenefit from the Clean Screen program, 
including its LEI component, continue to be within the original 
estimates from the Reg. No. 11 revisions that we approved on December 
14, 2001. Although those original 2001 disbenefit estimates (4% for CO, 
7% for HC, and 35% vehicles being clean-screened) were prepared with 
then current tools, the Clean Screen program and LEI component continue 
to perform within those estimates. Also, from the above four years of 
Clean Screen annual reports that we evaluated, the State's Reg. No. 11 
revisions original estimate of 35% of the fleet being clean-screened 
has not be been achieved. Based on the four referenced Clean Screen 
reports, we note that 22% or less of the eligible vehicles have been 
clean-screened. Therefore, the actual emissions reduction disbenefit 
has been less than predicted as more vehicles have then been required 
to go through the IM240 test.
    With regard to the seven-year new vehicle exemption from I/M 
testing, as explained above in section V, we noted that with the 
implementation of the Reg. No. 11 provisions of the combination of the 
OBD testing component and the seven-year exemption from I/M testing 
there was estimated to be a small increase in CO emissions and a minor 
reduction in ozone precursor emissions (NOX and TGH). As 
noted above, the EPA evaluated this small increase in estimated CO 
emissions and has concluded it will not have a detrimental effect on 
the approved revised Metro-Denver CO maintenance plan (72 FR 46148, 
August 17, 2007). Our evaluation considered the negligible increase in 
CO emissions of approximately four tons per day as compared to the CO 
mobile sources emission inventory data in the Metro-Denver CO 
maintenance plan. As we noted above, the maintenance plan's estimated 
2015 mobile source CO emissions are 1,416 tpd and the estimated 2021 
(last year of the maintenance plan) mobile source CO emissions are 
1,372.10 tpd. Therefore, the four tpd increase would be 0.28% of the 
2015 mobile source CO emissions and the 0.29% of the 2021 mobile source 
CO emissions. We also reviewed available state-certified and EPA-
reviewed ambient CO air quality monitoring data from the EPA's AQS 
database from 2007 through 2015. These data show no exceedance or 
violation of the CO NAAQS. We further noted that the minor increase in 
reductions of ozone precursor emissions of NOX and TGH will 
be beneficial as the Metro-Denver/NFR 2008 8-hour ozone NAAQS 
nonattainment area continues to work towards attainment of that NAAQS.
    With respect to other NAAQS that have the potential to be affected 
by our proposed approval of the above Reg. No. 11 revisions, we note 
that the Metro-Denver area is designated ``unclassifiable/attainment'' 
for the 1-hour NO2 NAAQS \14\ and the annual and 24-hour 
PM2.5 NAAQS \15\ (see: 40 CFR 81.306). We reviewed available 
state-certified and EPA-reviewed ambient air quality monitoring data 
for the 1-hour NO2 NAAQS, and the annual and 24-hour 
PM2.5 NAAQS. Our review involved EPA's AQS database and 
relevant data from 2007 through 2015. The data demonstrate continued 
attainment of the 1-hour NO2 and PM2.5 annual and 
24-hour NAAQS in the Metro-Denver area.
---------------------------------------------------------------------------

    \14\ 1-hour NO2 NAAQS: 75 FR 6474, February 9, 2010.
    \15\ PM2.5 NAAQS: Annual NAAQS (78 FR 3086, January 
15, 2013); 2006 24-hour NAAQS (71 FR 61144, October 17, 2006).
---------------------------------------------------------------------------

    In addition to the above, we have determined the revisions to Reg. 
No. 11 contained in all three SIP revision submittals involving the 
language changes necessary to implement the LEI and Clean Screen 
program components, the OBD I/M testing program component, the seven 
model-year exemption from I/M testing provisions, the requirement for a 
full I/M retest after the replacement of a missing or malfunctioning 
gas cap, new definitions, clarification language, removal of obsolete 
language, numerous minor revisions to Parts A, B, C, F, G, Appendix A 
and Appendix B of Reg. No. 11, overall formatting, correction of 
typographic errors and other non-substantive changes do not affect 
emissions and therefore do not have CAA section 110(l) implications.
    In view of the above, the EPA proposes to find that the revisions 
to Colorado's Reg. No. 11 that are contained in the State's SIP 
submittals dated June 11, 2008, March 15, 2013 and March 3, 2014 will 
not interfere with attainment, reasonable further progress, or any 
other applicable requirement of the CAA.

IX. Proposed Action

    The EPA is proposing approval of the June 11, 2008 submitted SIP 
revisions to Colorado's Regulation Number 11, Part A, Part C, Part F, 
and Appendix A. The EPA notes that Part F, section III.A.2 was also 
provided with the State's June 11, 2008 submittal. This section 
contains IM240 test light duty vehicle emissions cutpoints for 1996 and 
newer vehicles (all in grams per mile). The CO, HC, and NOX 
entries for calendar year 2006 are incorrect as the State had 
previously provided an August 8, 2006 SIP revision submittal to remove 
these 2006 cutpoints (i.e., HC 0.6, CO 10.0, and NOX 1.5). 
EPA approved the removal of these 2006 cutpoints on December 20, 2012 
(77 FR 75388).
    In addition, the EPA is proposing approval of the March 15, 2013 
submitted SIP revisions to Regulation Number 11, Part A, Part B, Part 
C, Part F, and Part G. Finally, the EPA is proposing approval of the 
March 3, 2014 submitted SIP revisions to Regulation Number 11, Part A, 
Part C, Appendix A, and Appendix B.

X. Incorporation by Reference

    In this rule, the EPA is proposing to include in a final EPA rule 
regulatory text that includes incorporation by reference. In accordance 
with requirements of 1 CFR 51.5, the EPA is proposing to incorporate by 
reference Colorado Air Quality Control Commission, Regulation Number 11 
as discussed in section IX of this preamble. The EPA has made, and will 
continue to make, these documents generally available electronically 
through www.regulations.gov and/or at the EPA Region 8 Office (please 
contact the person identified in the For Further Information Contact 
section of this preamble for more information).

[[Page 53378]]

XI. 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 
proposed action merely approves some state law as meeting federal 
requirements and disapproves other state law because it does not meet 
federal requirements; this proposed action does not impose additional 
requirements beyond those imposed by state law. For that reason, this 
proposed action:
     Is not a ``significant regulatory action'' subject to 
review by the Office of Management and Budget under Executive Order 
12866 (58 FR 51735, Oct. 4, 1993);
     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, as 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, Aug. 10, 1999);
     Is not an economically significant regulatory action based 
on health or safety risks subject to Executive Order 13045 (62 FR 
19885, April 23, 1997);
     Is not a significant regulatory action subject to 
Executive Order 13211 (66 FR 28355, May 22, 2001);
     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; and,
     Does not provide the EPA with the discretionary authority 
to address, as appropriate, disproportionate human health or 
environmental effects, using practicable and legally permissible 
methods, under Executive Order 12898 (59 FR 7629, Feb. 16, 1994).
    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).

List of Subjects in 40 CFR Part 52

    Environmental protection, Air pollution control, Carbon monoxide, 
Incorporation by reference, Intergovernmental relations, Nitrogen 
dioxide, Ozone, Particulate matter, Reporting and recordkeeping 
requirements, and Volatile organic compounds.

    Authority:  42 U.S.C. 7401 et seq.

    Dated: July 26, 2016.
Shaun L. McGrath,
Regional Administrator, Region 8.
[FR Doc. 2016-18878 Filed 8-11-16; 8:45 am]
 BILLING CODE 6560-50-P



                                               53370                    Federal Register / Vol. 81, No. 156 / Friday, August 12, 2016 / Proposed Rules

                                               • does not contain any unfunded                         ENVIRONMENTAL PROTECTION                              making effective comments, please visit
                                                  mandate or significantly or uniquely                 AGENCY                                                http://www2.epa.gov/dockets/
                                                  affect small governments, as described                                                                     commenting-epa-dockets.
                                                  in the Unfunded Mandates Reform                      40 CFR Part 52                                        FOR FURTHER INFORMATION CONTACT: Tim
                                                  Act of 1995 (Pub. L. 104–4);                         [EPA–R08–OAR–2016–0016; FRL–9950–37–                  Russ, Air Program, EPA, Region 8,
                                               • does not have Federalism                              Region 8]                                             Mailcode 8P–AR, 1595 Wynkoop,
                                                  implications as specified in Executive                                                                     Denver, Colorado 80202–1129, (303)
                                                                                                       Approval and Promulgation of Air                      312–6479, russ.tim@epa.gov.
                                                  Order 13132 (64 FR 43255, August 10,
                                                                                                       Quality Implementation Plans; State of
                                                  1999);                                                                                                     SUPPLEMENTARY INFORMATION:
                                                                                                       Colorado; Motor Vehicle Inspection
                                               • is not an economically significant                    and Maintenance, Clean Screen                         Table of Contents
                                                  regulatory action based on health or                 Program and the Low Emitter Index,                    I. General Information
                                                  safety risks subject to Executive Order              On-Board Diagnostics, and Associated                  II. Background
                                                  13045 (62 FR 19885, April 23, 1997);                 Revisions                                             III. What was the State’s process?
                                               • is not a significant regulatory action                AGENCY:  Environmental Protection
                                                                                                                                                             IV. EPA’s Evaluation of the State’s 2007
                                                  subject to Executive Order 13211 (66                                                                            Revisions to the Low Emitter Index, Part
                                                                                                       Agency (EPA).                                              A, Part C, Part F, and Appendix A
                                                  FR 28355, May 22, 2001);                             ACTION: Proposed rule.                                V. EPA’s Evaluation of the State’s 2012
                                               • is not subject to requirements of                                                                                Revisions to the On-Board Diagnostics
                                                  Section 12(d) of the National                        SUMMARY:   The Environmental Protection                    Test, the Seven Model Year Emissions
                                                  Technology Transfer and                              Agency (EPA) is proposing approval of                      Test Exemption, the Gas Cap Retest, Part
                                                                                                       three State Implementation Plan (SIP)                      A, Part B, Part C, Part F, and Part G
                                                  Advancement Act of 1995 (15 U.S.C.                                                                         VI. EPA’s Evaluation of the State’s 2013
                                                  272 note) because application of those               revisions submitted by the State of
                                                                                                       Colorado. The revisions involve                            Revisions to Part A, Part C, Appendix A,
                                                  requirements would be inconsistent                                                                              and Appendix B
                                                  with the Clean Air Act; and                          amendments to Colorado’s Regulation                   VII. Conclusion
                                                                                                       Number 11 ‘‘Motor Vehicle Emissions                   VIII. Consideration of Section 110(l) of the
                                               • does not provide EPA with the                         Inspection Program.’’ The revisions                        Clean Air Act
                                                  discretionary authority to address, as               address the implementation of the Low                 IX. Proposed Action
                                                  appropriate, disproportionate human                  Emitter Index component of Regulation                 X. Incorporation by Reference
                                                  health or environmental effects, using               No. 11’s Clean Screen Program, the                    XI. Statutory and Executive Order Reviews
                                                  practicable and legally permissible                  implementation of the On-Board
                                                  methods, under Executive Order                       Diagnostics component of Regulation                   I. General Information
                                                  12898 (59 FR 7629, February 16,                      No. 11, and several other associated                    What should I consider as I prepare
                                                  1994).                                               revisions. The EPA is proposing                       my comments for the EPA?
                                                  In addition, the SIP is not approved                 approval of these SIP revisions in                      1. Submitting Confidential Business
                                               to apply on any Indian reservation land                 accordance with the requirements of                   Information (CBI). Do not submit CBI to
                                               or in any other area where EPA or an                    section 110 of the Clean Air Act (CAA).               the EPA through http://
                                               Indian tribe has demonstrated that a                    DATES: Written comments must be                       www.regulations.gov or email. Clearly
                                               tribe has jurisdiction. In those areas of               received on or before September 12,                   mark the part or all of the information
                                               Indian country, the rule does not have                  2016.                                                 that you claim to be CBI. For CBI
                                               tribal implications and will not impose                 ADDRESSES:   Submit your comments,                    information in a disk or CD ROM that
                                               substantial direct costs on tribal                      identified by Docket ID No. EPA–R08–                  you mail to the EPA, mark the outside
                                               governments or preempt tribal law as                    OAR–2016–0016 at http://                              of the disk or CD ROM as CBI and then
                                               specified by Executive Order 13175 (65                  www.regulations.gov. Follow the online                identify electronically within the disk or
                                               FR 67249, November 9, 2000).                            instructions for submitting comments.                 CD ROM the specific information that is
                                                                                                       Once submitted, comments cannot be                    claimed as CBI. In addition to one
                                               List of Subjects in 40 CFR Part 52                      edited or removed from regulations.gov.               complete version of the comment that
                                                                                                       The EPA may publish any comment                       includes information claimed as CBI, a
                                                 Environmental protection, Air                                                                               copy of the comment that does not
                                                                                                       received to its public docket. Do not
                                               pollution control, Carbon monoxide,                                                                           contain the information claimed as CBI
                                                                                                       submit electronically any information
                                               Incorporation by reference,                                                                                   must be submitted for inclusion in the
                                                                                                       you consider to be Confidential
                                               Intergovernmental relations, Lead,                      Business Information (CBI) or other                   public docket. Information so marked
                                               Nitrogen dioxide, Ozone, Particulate                    information whose disclosure is                       will not be disclosed except in
                                               matter, Reporting and recordkeeping                     restricted by statute. Multimedia                     accordance with procedures set forth in
                                               requirements, Sulfur oxides, Volatile                   submissions (audio, video, etc.,) must be             40 CFR part 2.
                                               organic compounds.                                      accompanied by a written comment.                       2. Tips for preparing your comments.
                                                  Authority: 42 U.S.C. 7401 et seq.                    The written comment is considered the                 When submitting comments, remember
                                                                                                       official comment and should include                   to:
                                                 Dated: July 28, 2016.                                                                                         • Identify the rulemaking by docket
                                                                                                       discussion of all points you wish to
                                               Shaun L. McGrath,                                       make. The EPA will generally not                      number and other identifying
                                               Regional Administrator, Region 8.                       consider comments or comment                          information (subject heading, Federal
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                                               [FR Doc. 2016–18869 Filed 8–11–16; 8:45 am]             contents located outside of the primary               Register volume, date, and page
                                               BILLING CODE 6560–50–P                                  submission (i.e., on the web, cloud, or               number);
                                                                                                       other file sharing system). For                         • Follow directions and organize your
                                                                                                       additional submission methods, the full               comments;
                                                                                                       EPA public comment policy,                              • Explain why you agree or disagree;
                                                                                                       information about CBI or multimedia                     • Suggest alternatives and substitute
                                                                                                       submissions, and general guidance on                  language for your requested changes;


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                                                                       Federal Register / Vol. 81, No. 156 / Friday, August 12, 2016 / Proposed Rules                                        53371

                                                  • Describe any assumptions and                       vehicle passes through infrared or                    vehicles and a TSI test for 1981 and
                                               provide any technical information and/                  ultraviolet beams of light. Owners of                 older light-duty gas vehicles. In
                                               or data that you used;                                  vehicles meeting the Clean Screen                     addition, and beginning in January
                                                  • If you estimate potential costs or                 criteria are notified by the County Clerk             2015, Colorado also began
                                               burdens, explain how you arrived at                     that their vehicles have passed the                   implementing an On-Board Diagnostics
                                               your estimate in                                        motor vehicle inspection process and                  (OBD) test for certain model year
                                                  sufficient detail to allow for it to be              are exempt from their next regularly                  vehicles. An OBD I/M test essentially
                                               reproduced;                                             scheduled IM240 test.                                 means the electronic retrieval, by
                                                  • Provide specific examples to                          The Clean Screen program component                 connecting to the computer port data
                                               illustrate your concerns, and suggest                   of Colorado’s Reg. No. 11 was originally              link connector (DLC) in the vehicle with
                                               alternatives;                                           approved, for implementation in the                   an OBD test analyzer, of information
                                                  • Explain your views as clearly as                   Metro-Denver area, with the EPA’s                     from a vehicle’s computer system. The
                                               possible, avoiding the use of profanity                 approval of the original Denver carbon                electronic information retrieved
                                               or personal threats; and,                               monoxide (CO) redesignation to                        addresses items such as stored readiness
                                                  • Make sure to submit your                           attainment and the maintenance plan                   status, diagnostic trouble codes (DTC),
                                               comments by the comment period                          (see: 66 FR 64751, December 14, 2001).                malfunction indicator light (MIL)
                                               deadline identified.                                    The Clean Screen criteria that was                    illumination and other data from a
                                                                                                       approved in 2001 by the EPA (see: 66                  vehicle’s OBD system. Electronically
                                               II. Background                                          FR 64751, December 14, 2001) required                 interrogating a vehicle’s OBD system
                                                  In this action, the EPA is proposing                 two valid passing remote sensing                      allows for the determination of whether
                                               approval of SIP revisions to Regulation                 readings on different days or from                    any emission related DTCs are present
                                               No. 11 contained in three submittals                    different sensors, that met the                       and if the MIL is commanded on.
                                               from Colorado. The State’s submittals                   applicable emissions reading                          Should these aspects of an OBD test be
                                               were dated June 11, 2008, March 15,                     requirements in Part F of Reg. No. 11,                present, that would indicate the
                                               2013, and March 3, 2014. Much of the                    within a twelve-month period in order                 existence of an emissions related
                                               content of the revisions involved minor                 to clean-screen a vehicle.                            malfunction with the vehicle being
                                               updates to several sections of Regulation                  Colorado revised Reg. No. 11 to                    tested.
                                               No. 11 and deletion of obsolete                         expand the definition and requirements                   In addition, Colorado also extended
                                               language. The following background                      for a ‘‘clean-screened vehicle’’ to also              the Reg. No. 11 exemption from I/M
                                               discussion involves those revisions of                  include vehicles identified as low                    testing for new vehicles from four years
                                               greater significance:                                   emitting vehicles in the state-                       to seven years. This revision was based
                                                                                                       determined Low Emitting Index (LEI)                   on Colorado’s gathering of emissions
                                               a.) Colorado’s 2007 Revisions to                        which have one passing remote sensing                 testing information over a period of
                                               Regulation No. 11 for the                               reading, prior to the vehicle’s                       several years which demonstrated that
                                               Implementation of the Low Emitter                       registration renewal date. As part of the             historically new and newer vehicles
                                               Index (LEI) Portion of the Clean Screen                 LEI process, the Colorado Department of               typically did not fail the IM240 or OBD
                                               Program Contained in Regulation No. 11                  Public Health and Environment                         emissions test within the first seven
                                                  Colorado’s Regulation No. 11                         (CDPHE), Air Pollution Control Division               years of the vehicle’s life.
                                               (hereafter ‘‘Reg. No. 11’’) addresses the               (hereinafter, the ‘‘Division’’) develops                 By a letter dated March 15, 2013, the
                                               implementation of the State’s motor                     an LEI on or before July 1st of each year.            Governor of Colorado submitted the
                                               vehicle inspection and maintenance (I/                  The LEI is based on a tabulation of the               above 2012 Reg. No. 11 OBD test
                                               M) program. The I/M program consists                    previous calendar year’s IM240                        requirements, the seven year test
                                               of an ‘‘enhanced’’ component that                       inspection program results for specific               exemption, and other minor revisions.
                                               utilizes a dynamometer-based EPA                        make, model, and model year vehicles                  These SIP revisions are discussed in
                                               IM240 test for 1982 and newer light-                    that passed IM240 vehicle inspections                 further detail below in section V.
                                               duty gasoline vehicles 1 and a two-speed                the previous year at a minimum rate of
                                                                                                                                                             c.) Colorado’s 2013 Revisions to
                                               idle test (TSI) 2 for 1981 and older light-             a 98%.
                                                                                                          By a letter dated June 11, 2008, the               Regulation No. 11, Appendix A,
                                               duty gasoline vehicles. To improve                                                                            Incorporation by Reference of Technical
                                               motorist convenience and reduce                         Governor of Colorado submitted the
                                                                                                       above 2007 Reg. No. 11 LEI revisions                  Materials, the Addition of New
                                               program implementation costs, the State                                                                       Technical Information/Requirements,
                                               also administers a remote sensing-based                 and other minor revisions involving
                                                                                                       changes/additions to the definitions in               and Minor Revisions to Appendix B
                                               ‘‘Clean Screen’’ program component of
                                                                                                       Reg. No. 11and the addition of                           Colorado further revised Reg. No. 11
                                               the I/M program. Remote sensing is a
                                                                                                       Attachment 1 to the Technical                         by updating Appendix A and Appendix
                                               method for measuring vehicle
                                                                                                       Specifications in Appendix A. These                   B to remove text and incorporate by
                                               emissions, while simultaneously
                                                                                                       SIP revisions are discussed in further                reference certain Attachments to
                                               photographing the license plate, when a
                                                                                                       detail below in section IV.                           Appendix A, to add new language to
                                                  1 See 40 CFR part 51, subpart S for a complete
                                                                                                                                                             Appendix A, and to add new language
                                                                                                       b.) Colorado’s 2012 Revisions to                      and remove obsolete language in
                                               description of EPA’s IM240 test. The IM240 test is
                                               essentially an enhanced motor vehicle emissions
                                                                                                       Regulation No. 11 for the                             Appendix B.
                                               test to measure mass tailpipe emissions while the       Implementation of the On-Board                           Appendix A was revised to remove
                                               vehicle follows a computer generated driving cycle      Diagnostics Test Requirements                         the text of three technical document
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                                               trace for 240 seconds and while the vehicle is on       Contained in Regulation No. 11 and the
                                               a dynamometer.                                                                                                attachments and to note that the
                                                  2 See 40 CFR part 51, subpart S for a complete
                                                                                                       Seven Model Year I/M Test Exemption                   documents are available at CDPHE’s
                                               description of EPA’s two-speed idle test. The two-        As noted above, Colorado’s Reg. No.                 Emissions Technical Center Procedures
                                               speed idle test essentially measures the mass           11 addresses the implementation of a                  Manual. The technical documents are
                                               tailpipe emissions of a stationary vehicle; one
                                               reading is at a normal idle of approximately 700 to
                                                                                                       motor vehicle I/M program that consists               incorporated by reference into Reg. No.
                                               800 engine revolutions per minute (RPM) and one         of a an ‘‘enhanced’’ component IM240                  11. Appendix A. The technical
                                               reading at 2,500 RPM.                                   test for 1982 and newer light-duty                    documents that are incorporated by


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                                               53372                   Federal Register / Vol. 81, No. 156 / Friday, August 12, 2016 / Proposed Rules

                                               reference into Reg. No. 11 are:                         ‘‘completeness’’ criteria found in 40                 No. 11, for implementation in the
                                               Attachment I ‘‘PDF 1000 Scanner,’’                      CFR part 51, Appendix V.                              Metro-Denver area with our approval of
                                               Attachment II ‘‘Thermal Transfer                                                                              the original Denver carbon monoxide
                                                                                                       b.) The State’s March 15, 2013 SIP
                                               Printer,’’ and Attachment III ‘‘Colorado                                                                      (CO) redesignation to attainment and
                                                                                                       Submittal
                                               Automobile Dealers Transient Mode                                                                             the associated maintenance plan (see: 66
                                               Test Analyzer System.’’ Appendix A                         On December 20, 2012, the AQCC                     FR 64751, December 14, 2001).
                                               was also revised by adding Attachment                   conducted a public hearing to consider                Additional discussion of the Clean
                                               V ‘‘Specifications for Colorado On-                     the adoption of revisions and additions               Screen program was provided in our
                                               Board Diagnostic (OBD) Stand-Alone                      to the Colorado SIP. The revisions                    August 22, 2001 proposed rule (66 FR
                                               Analyzer.’’                                             affecting the SIP involved Reg. No. 11,               44097). In evaluating the Clean Screen
                                                  Appendix B, which is entitled                        the OBD program, the seven model year                 program for the maintenance plan, the
                                               ‘‘Standards and Specifications for                      exemption from I/M testing, and                       State used EPA’s MOBILE5b motor
                                               Calibration/Span Gas Suppliers,’’ was                   associated revisions. After reviewing                 vehicle emissions calculation model
                                               revised with updated language in                        one supportive email written comment,                 and the MOBILE model’s remote
                                               Section 1 ‘‘Definitions,’’ Section 2                    dated December 16, 2012, received from                sensing program credit utility dated
                                               ‘‘Basic & Enhanced Idle Air Program/                    Bob Armott and after conducting a                     1996 3 and revised in 1998.4 Further
                                               Technical Requirements,’’ Section 3,                    public hearing, the AQCC adopted the                  discussion is also provided in the
                                               ‘‘Calibration/Span Gas Approval &                       proposed revisions to Reg. No. 11 on                  State’s Technical Support Document
                                               Labeling,’’ Section 4 ‘‘Cylinder Tracking               December 20, 2012. The SIP revisions                  (TSD) for the 2001 CO redesignation to
                                               & Recall,’’ Section 5 ‘‘Enhanced IM & IG                became State effective on February 15,                attainment, which is part of the EPA’s
                                                                                                       2013.                                                 final rule hard copy docket, and is also
                                               240 Air Program/Technical
                                                                                                          We evaluated the State’s March 15,
                                               Requirements,’’ Section 6 ‘‘Colorado                                                                          available from the State on-line at:
                                                                                                       2013 submittal for Reg. No. 11 of the SIP
                                               Approval Process,’’ and Section 7                                                                             http://www.colorado.gov/airquality/
                                                                                                       and determined that the State met the
                                               ‘‘Blender Facility Requirements &                                                                             tech_doc_repository.aspx?action=
                                                                                                       requirements for reasonable notice and
                                               Documentation.’’ Obsolete language was                                                                        open&file=codenfnl.pdf).
                                                                                                       public hearing under section 110(a)(2)                   For the Reg. No. 11 revisions that we
                                               also removed from Appendix B.                           of the CAA. By operation of law under
                                                  By a letter dated March 3, 2014, the                                                                       approved on December 14, 2001, the
                                                                                                       section 110(k)(1)(B) of the CAA, the
                                               Governor of Colorado submitted the                                                                            State used the above tools and other
                                                                                                       State’s March 15, 2013 submittal was
                                               above 2013 Reg. No. 11 revisions to                                                                           data to evaluate the Clean Screen
                                                                                                       deemed complete on September 15,
                                               Appendix A and Appendix B. These SIP                                                                          program for its implementation in the
                                                                                                       2013.
                                               revisions are discussed in further detail                                                                     Metro-Denver area. Based on this
                                               below in section VI.                                    c.) The State’s March 3, 2014 SIP                     evaluation and the review of
                                                                                                       Submittal                                             information for the additional
                                               III. What was the State’s process?                                                                            implementation of a Clean Screen
                                                                                                          On November 21, 2013, the AQCC
                                                 Section 110(a)(2) of the CAA requires                 conducted a public hearing to consider                program in Fort Collins (located in
                                               that a state provide reasonable notice                  the adoption of revisions and additions               Larimer County, Colorado) and Greeley
                                               and public hearing before adopting a                    to the Colorado SIP. The revisions                    (located in Weld County, Colorado), the
                                               SIP revision and submitting it to us.                   affecting the SIP included updating                   state concluded there would be an
                                                                                                       Appendix A and Appendix B to Reg.                     approximate 4% disbenefit for CO
                                               a.) The State’s June 11, 2008 SIP                                                                             emissions and a 7% disbenefit for
                                                                                                       No. 11 to remove text, incorporate by
                                               Submittal                                                                                                     hydrocarbon (HC) emissions if it was
                                                                                                       reference certain Attachments to
                                                  On June 21, 2007 the Colorado Air                    Appendix A, to add new language to                    assumed that 35% of the eligible
                                               Quality Control Commission (AQCC)                       Appendix A, and to add new language                   vehicles were clean-screened.5
                                               conducted a public hearing to consider                  and remove obsolete language in                          We note that the version of Reg. No.
                                               the adoption of revisions and additions                 Appendix B. After conducting a public                 11 that the EPA approved on December
                                               to the Colorado SIP. The revisions                      hearing, which did not have any public                14, 2001 included the Clean Screen
                                               affecting the SIP involved Reg. No. 11,                 comments, the AQCC adopted the                        criteria which required an eligible
                                               the Clean Screen sections of Reg. No. 11,               proposed revisions to Reg. No. 11 on                  vehicle for inspection to have at least
                                               the LEI portion of the Clean Screen                     November 21, 2013. The SIP revisions                  two consecutive passing remote sensing
                                               program, and associated revisions. After                became State effective on December 30,                emissions readings performed on
                                               reviewing written comments, dated                       2013.                                                 different days, or at different approved
                                               April 17, 2007, received from Rocky                        We evaluated the State’s March 3,                  Clean Screen inspection sites, prior to
                                               Mountain Clean Air Action and after                     2014 submittal for Reg. No. 11 of the SIP             its registration renewal date.
                                               conducting a public hearing, the AQCC                   and determined that the State met the                    With the 2007 Reg. No. 11 revisions,
                                               adopted the proposed revisions to Reg.                  requirements for reasonable notice and                the AQCC adopted modifications as
                                               No. 11 on June 21, 2007. The SIP                        public hearing under section 110(a)(2)                proposed by the Division that expanded
                                               revisions became State effective on                     of the CAA. By operation of law under                 the Clean Screen criteria to also include
                                               August 30, 2007.                                        section 110(k)(1)(B) of the CAA, the                  vehicles with one passing remote
                                                  We evaluated the State’s June 11,                    State’s March 3, 2014 submittal was                   sensing reading prior to its registration
                                               2008 submittal for Reg. No. 11 of the SIP               deemed complete on September 3, 2014.
                                                                                                                                                               3 ‘‘User Guide and Description For Interim
                                               and determined that the State met the
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                                                                                                       IV. EPA’s Evaluation of the State’s 2007              Remote Sensing Program Utility,’’ EPA/AA/AMD/
                                               requirements for reasonable notice and                  Revisions to the Low Emitter Index,                   EIG/96–01, dated September, 1996.
                                               public hearing under section 110(a)(2)                  Part A, Part C, Part F, and Appendix A                  4 ‘‘Program User Guide for Interim Vehicle Clean

                                               of the CAA. By a letter dated October                                                                         Screening Credit Utility,’’ Draft Report, EPA420–P–
                                               14, 2008, we advised James B. Martin,                   a.) Evaluation of the Clean Screen                    98–007, dated May, 1998.
                                               Executive Director of the CDPHE, that                   Program and LEI Component                               5 ‘‘Revised Final Economic Impact Analysis for

                                                                                                                                                             Inspection and Maintenance per C.R.S. 25–7–
                                               the SIP revisions submittal was deemed                    We approved the Clean Screen                        110.5(4)(I), Cost Effectiveness Economic Impact
                                               to have met the minimum                                 program component of Colorado’s Reg.                  Analysis, 2/1/99.’’



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                                                                                Federal Register / Vol. 81, No. 156 / Friday, August 12, 2016 / Proposed Rules                                                                                53373

                                               date and that the vehicle is identified as                                   the Division may use passing criteria                                        2011,7 2012,8 and 2013.9 The annual
                                               a low emitter on the LEI. To address the                                     greater than 98% if necessary to ensure                                      reports detailed the overall effectiveness
                                               LEI criteria of this revised Clean Screen                                    that the use of the LEI is equivalent or                                     of the Clean Screen program and also
                                               process, the Division develops a low                                         better than the use of a second remote                                       contained the results of the random 2%
                                               emitting vehicle index on or before July                                     sensing measurement in terms of air                                          sampling for the LEI component. This
                                               1st of each year based on a tabulation                                       quality benefits. This process is more                                       sampling procedure involved retaining
                                               of the previous calendar year’s IM240                                        fully detailed in the CPDHE May, 2007                                        2% of the vehicles which had been
                                               inspection program results for specified                                     document entitled ‘‘Development and                                          shown to pass one measurement with
                                               make, model and model year vehicles.                                         Evaluation of Colorado’s Low Emitter                                         RSD equipment and been on the LEI
                                               This LEI is comprised of specific make,                                      Index.’’                                                                     index, and then requiring them to take
                                               model and model year vehicles that                                             To assess the State’s Clean Screen                                         an IM240 test for comparison. The data,
                                               passed IM240 vehicle inspections the                                         program and its LEI component, the                                           including fleet coverage and emissions
                                               previous year at a minimum of a 98%                                          EPA reviewed the available CDPHE                                             reduction retention, are presented below
                                               rate. However, in developing the LEI,                                        Clean Screen annual reports for 2009,6                                       in Tables 1 and 2:

                                                                                            TABLE 1—TOTAL VEHICLES INSPECTED AND VEHICLES CLEAN-SCREENED
                                                                                                                                                                                                                                           Percent of
                                                                                                                                                                                                                                         total vehicles
                                                                                                                                                                                                                         Vehicles that
                                                                                                                                                                                                       Total vehicles                      that were
                                                                                                  Year of clean screen report                                                                                            were clean-
                                                                                                                                                                                                         inspected                           clean-
                                                                                                                                                                                                                          screened         screened
                                                                                                                                                                                                                                               (%)

                                               2009    .............................................................................................................................................         899,646          199,344              22.0
                                               2011    .............................................................................................................................................       1,156,949          246,768              21.3
                                               2012    .............................................................................................................................................       1,150,562          248,224              21.6
                                               2013    .............................................................................................................................................       1,184,875          233,760              19.7


                                                                     TABLE 2—ESTIMATED CLEAN SCREEN DISBENEFIT—BASED ON RETAINED EMISSION REDUCTIONS
                                                                                                                                                                                                       Retained HC       Retained CO       Retained
                                                                                                                                                                                                         emission          emission      NOX* emission
                                                                                                  Year of clean screen report                                                                           reductions        reductions      reductions
                                                                                                                                                                                                           (%)               (%)             (%)

                                               2009    .............................................................................................................................................             94.6             98.1             92.9
                                               2011    .............................................................................................................................................             96.1             98.1             97.3
                                               2012    .............................................................................................................................................             94.8             97.1             93.9
                                               2013    .............................................................................................................................................             97.3             96.7             97.6

                                               Average Clean Screen Disbenefit ...............................................................................................                                    4.3              2.5              4.6
                                                  * Nitrogen Oxides.


                                                 The data from the State’s Clean                                            the fleet being clean-screened has not                                       ‘‘Low Emitting Vehicle Index.’’
                                               Screen reports, as excerpted and                                             been achieved. Based on the four                                             Renumber definitions number 18 and
                                               presented in the above tables,                                               referenced Clean Screen reports, we                                          higher.
                                               demonstrate that the disbenefit from the                                     note that 22% or less of the eligible                                           2.) Part C, section XII: Modify section
                                               Clean Screen program and its LEI                                             vehicles have been clean-screened.                                           XIIA.3 regarding the requirements and
                                               component continue to be within the                                          Therefore, the actual emission reduction                                     procedures to clean screen an eligible
                                               original estimates from the Reg. No. 11                                      disbenefit has been less than predicted,                                     vehicle and add section XIIE.4 regarding
                                               revisions that we approved on                                                as more vehicles have then been                                              low emitting vehicles and the LEI.
                                                                                                                            required to go through the IM240 test.                                          3.) Part F, section VI: Renumber
                                               December 14, 2001. Although those
                                                                                                                                                                                                         section VI.B as VI.C; add new section
                                               original 2001 disbenefit estimates (4%                                       b.) The Sections of Reg. No. 11 That                                         VI.B.1 which requires the development
                                               for CO, 7% for HC, and assuming 35%                                          Were Revised With the State’s June 11,                                       of the LEI each year; add new section
                                               clean-screened vehicles) were prepared                                       2008 Submittal Were as Follows:                                              VI.B.2 which establishes the 98%
                                               with then current tools, the Clean                                              1.) Part A, section II: Modify                                            minimum passing criteria for the LEI;
                                               Screen program and LEI component                                             definition number 15 ‘‘Clean Screened                                        and add new section VI.B.3 which
                                               continue to perform within those                                             Vehicle’’ to reflect the addition of the                                     allows the Division to use a greater than
                                               estimates. Also, from the above four                                         LEI; modify definition number 17                                             98% passing criteria if needed to equate
                                               years of Clean Screen annual reports                                         ‘‘Colorado ’4’’ to clarify the use of the                                    to a second RSD reading.
                                               that we evaluated, the State’s Reg. No.                                      BAR 90 test analyzer systems for use                                            4.) Appendix A, Technical
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                                               11 revisions original estimate of 35% of                                     after 1994; and add a new definition                                         Specifications, Attachment 1: Sections
                                                 6 ‘‘The Colorado Remote Sensing Program                                      8 ‘‘The Colorado Remote Sensing Program

                                               January–December, 2009,’’ Colorado Department of                             January–December, 2012,’’ Colorado Department of
                                               Public Health and Environment, July, 2010.                                   Public Health and Environment, December, 2013.
                                                 7 ‘‘The Colorado Remote Sensing Program                                      9 ‘‘The Colorado Remote Sensing Program

                                               January–December, 2011,’’ Colorado Department of                             January–December, 2013,’’ Colorado Department of
                                               Public Health and Environment, November, 2012.                               Public Health and Environment, September, 2014.



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                                               53374                          Federal Register / Vol. 81, No. 156 / Friday, August 12, 2016 / Proposed Rules

                                               of Attachment 1 of the Technical                                       DTCs, MIL illumination and other                                       testing for OBD equipped vehicles that
                                               Specifications contain the specifications                              information from a vehicle’s OBD                                       were otherwise hard to test with the
                                               for the PDF 1000 Scanner; some sections                                system. Electronically interrogating a                                 IM240 procedures (for example, too
                                               were unreadable and a full, retyped PDF                                vehicle’s OBD system allows for the                                    short of a wheelbase for the
                                               1000 Scanner section was provided.                                     determination if any emission related                                  dynamometer treadmills, vehicles with
                                                  5.) Appendix A, Technical                                           DTCs are present and if the MIL is                                     very large or small wheel/tire
                                               Specifications, Attachment 2: Sections                                 commanded on. Should these aspects of                                  combinations, and certain all-wheel-
                                               of Attachment 2 of the Technical                                       an OBD test be present, that would                                     drive vehicles with very sensitive
                                               Specifications contain the specifications                              indicate the existence of an emissions                                 traction control systems), eliminated the
                                               for the Thermal Transfer Printer; some                                 related malfunction with the vehicle                                   visual inspection for 1996 and newer
                                               sections were unreadable and a full,                                   being tested. More detailed information                                vehicles (because of OBD testing), and
                                               retyped Thermal Transfer Printer                                       on OBD I/M testing is found in 40 CFR                                  required a full emissions retest for
                                               section was provided.                                                  85, Subpart W and at the EPA’s Office                                  vehicles initially failing the gas cap test.
                                                  The EPA notes that Part F, section                                  of Transportation and Air Quality                                      The 2012 Reg. No. 11 revisions retained
                                               III.A.2 of Reg. No. 11 was also provided                               (OTAQ) Web site at: http://                                            other aspects of the I/M program
                                               with the State’s June 11, 2008 submittal.                              www3.epa.gov/obd/regtech/inspection.                                   including the use of Clean Screen
                                               This section contains IM240 test light                                 htm. In addition, further information is                               technology to clean screen vehicles and
                                               duty vehicle emissions cutpoints for                                   provided in the EPA’s OBD rulemaking                                   annual TSI testing for 1981 and older
                                               1996 and newer vehicles (all in grams                                  actions of April 5, 2001 (66 FR 18156),                                vehicles.
                                               per mile). The CO, HC, and NOX entries                                 December 20, 2005 (70 FR 75403), and
                                               for calendar year 2006 are incorrect as                                the EPA’s document addressing                                             In consideration of the OBD testing
                                               the State had previously provided an                                   performing OBD system checks as part                                   component of the I/M program and the
                                               August 8, 2006 SIP revision submittal to                               of an I/M program.10                                                   extension from four years to seven years
                                               remove these 2006 cutpoints (i.e., HC                                    The EPA has reviewed the OBD                                         to exempt new vehicles from I/M testing
                                               0.6, CO 10.0, and NOX 1.5). The EPA                                    information in the State’s                                             (discussed further below), the State
                                               approved the removal of these 2006                                     Administrative documentation with its                                  prepared an estimated emissions benefit
                                               cutpoints on December 20, 2012 (77 FR                                  March 15, 2013 submittal, the OBD I/M                                  for the implementation of both the OBD
                                               75388).                                                                test procedures contained in the Reg.                                  testing and extended test exemption for
                                                                                                                      No. 11 revisions to Part A, Part B, Part                               seven years. This estimated emissions
                                               V. EPA’s Evaluation of the State’s 2012
                                               Revisions to the On-Board Diagnostics                                  C, and Part F, all as detailed further                                 benefit information is contained in the
                                               Test, the Seven Model Year Emissions                                   below, and has concluded these                                         Administrative Documentation, that is
                                               Test Exemption, the Gas Cap Retest,                                    revisions meet the requirements of 40                                  part of the State’s March 15, 2013 SIP
                                               Part A, Part B, Part C, Part F, and                                    CFR 85, Subpart W for OBD I/M testing                                  submittal, and is provided in the section
                                               Part G                                                                 and the above cited EPA final rules.                                   entitled ‘‘SIP Emission Reduction
                                                                                                                        We note the Colorado OBD test                                        Equivalency Demonstration.’’ The
                                               a.) Evaluation of the OBD Test                                         provisions that were adopted in 2012                                   information notes that the Division
                                               Provisions                                                             are applicable to a portion of the                                     conducted modeling of the 2012
                                                  As we noted above, beginning in                                     vehicles that are subject to an I/M test.                              revisions using the then current I/M
                                               January 2015, Colorado began                                           The Reg. No. 11 revisions of 2012 also                                 program, as implemented in the seven
                                               implementing an OBD test for certain                                   increased the new vehicle model year                                   Metro-Denver counties area, and the
                                               model year vehicles. An OBD I/M test                                   exemption from four to seven years,                                    new program (OBD plus the seven-year
                                               essentially means the electronic                                       required OBD testing for the next four                                 testing exemption) as fully implemented
                                               retrieval, by connecting to the computer                               years (two inspection cycles for the 8th                               in 2017. The year 2017 was selected as
                                               port DLC in the vehicle with an OBD                                    through 11th years), and required I/M                                  that would reflect the full completion of
                                               test analyzer, of information from a                                   240 testing to commence with the third                                 a two-year OBD inspection cycle on
                                               vehicle’s computer system addressing                                   inspection cycle. In addition, the Reg.                                applicable vehicles. The Division’s
                                               items such as stored readiness status,                                 No. 11 revisions of 2012 allowed OBD                                   results are provided below in Table 3:

                                                                   TABLE 3—SEVEN COUNTY METRO-DENVER AREA I/M PROGRAM ESTIMATED REDUCTIONS IN 2017
                                                                                                                                                                                               TGH *                  NOX                   CO

                                               Current I/M Program ...................................................................................................................   6.008 tpd ** ....      4.849 tpd ........     68.843 tpd.
                                               Revised I/M Program ..................................................................................................................    6.052 ..............   5.004 ..............   64.916.
                                                  *Total Gaseous Hydrocarbons.
                                                  **tons per day (tpd).


                                                 As shown in Table 3 above,                                           slight reduction in ozone precursor                                    approved revised Metro-Denver CO
                                               implementation of the Reg. No. 11                                      emissions (NOX and TGH).                                               maintenance plan (72 FR 46148, August
                                               provisions of the OBD component and                                       The EPA has evaluated this negligible                               17, 2007).11 Our evaluation considered
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                                               the seven-year exemption from I/M                                      increase in estimated CO emissions and                                 the negligible increase in CO emissions
                                               testing were estimated to result in a                                  has concluded it will not have a                                       of four tpd to the CO mobile sources
                                               small increase in CO emissions and a                                   detrimental effect on the most recently-                               emission inventory data in the Metro-

                                                 10 ‘‘Performing Onboard Diagnostic System                              11 ‘‘Approval and Promulgation of Air Quality                        Maintenance Plans, and Approval of Related
                                               Checks as Part of a Vehicle Inspection and                             Implementation Plans; State of Colorado; Revised                       Revisions,’’ 72 FR 46148, dated August 17, 2007.
                                               Maintenance Program,’’ EPA–420–R–01–015, dated                         Denver and Longmont Carbon Monoxide
                                               June, 2001.



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                                                                       Federal Register / Vol. 81, No. 156 / Friday, August 12, 2016 / Proposed Rules                                            53375

                                               Denver maintenance plan for the                         the duration for which new vehicles are               tailpipe emissions; however, if other
                                               projected 2015 mobile source CO                         exempt from I/M testing; 42–4–                        elements of the evaporative system are
                                               emissions of 1,416 tpd and the                          310(1)(a)(II)(C) and 42–4–306(8)(b),                  faulty replacing a faulty or missing gas
                                               maintenance plan’s final maintenance                    Colorado Revised Statute (C.R.S.)                     cap can trigger a tailpipe emissions
                                               year of 2021 projected mobile source CO                    The Division noted that the revision               failure. In addition, the inclusion or
                                               emissions of 1,372.10 tpd. The four tpd                 to extend the new vehicle model year                  replacement of a malfunctioning gas cap
                                               emissions would be 0.28% of the 2015                    exemption results in an overall cost                  will reduce emissions of volatile organic
                                               CO mobile source emissions and 0.29%                    savings and increased convenience to                  compounds (VOC) from a vehicle’s fuel
                                               of the 2021 CO mobile source emissions.                 the public for tests not performed. In                tank. This is a beneficial as VOCs are a
                                               In addition, we also reviewed state-                    addition, the Division stated that the                precursor emission to the formation of
                                               certified and EPA-reviewed ambient CO                   population of vehicles in this age group,             ground level ozone.
                                               air quality monitoring data that are                    and their vehicle miles traveled, are                    The Reg. No. 11 revisions also include
                                               located in the EPA’s Air Quality System                 relatively high; however, since they are              several ‘housekeeping’ items including:
                                               (AQS) database. We reviewed data from                   relatively new vehicles, their emissions              Correcting typographical and
                                               2007 through 2015. We did not find any                  are lower than those of older vehicles.               grammatical errors; deleting obsolete
                                               exceedances or violations of the CO                        The Division concluded that                        language and implementation dates;
                                               National Ambient Air Quality Standards                  increasing the duration of the new                    removing titles and text that were
                                               (NAAQS). Therefore, the Metro-Denver                    vehicle exemption increases emissions                 inadvertently left unchanged from prior
                                               CO maintenance area continues to                        from the entire fleet. However, the EPA               Reg. No. 11 changes; and renumbering
                                               demonstrate maintenance of the CO                       notes that with this particular revision              and recodifications according to
                                               NAAQS.                                                  to Reg. No. 11, the State simultaneously              adopted language additions and
                                                  We do note that the slight reduction                 included revisions to Reg. No. 11 to                  deletions.
                                               in ozone precursor emissions of NOX                     initiate OBD testing requirements for
                                               and TGH will be beneficial as the Metro-                applicable vehicles. As discussed above               d.) The Sections of Reg. No. 11 That
                                               Denver/North Front Range (NFR) 2008                     and as presented in Table 3 above, the                Were Revised With the State’s March 15,
                                               8-hour ozone NAAQS nonattainment                        net result of the implementation of both              2013 Submittal Were as Follows:
                                               area continues to work towards                          the seven-year extended exemption for                    1.) Part A, section I: Minor wording
                                               attainment of that NAAQS. Additional                    I/M test and OBD testing showed a                     changes to add new language and
                                               information regarding the Metro                         negligible increase of CO emissions and               remove obsolete language in sections
                                               Denver/NFR ozone nonattainment area                     a slight decrease in NOX and TGH                      I.B, I.C.3, I.C.3.a, I.C.3.b, I.C.3.c, I.C.4,
                                               and its status can be found in the EPA’s                emissions. Based on our above analysis                I.C.7, I.C.7.c, I.C.8, and I.C.9.b.
                                               2008 ozone NAAQS proposed SIP                           of the Metro-Denver CO maintenance                       Part A, section II: A new definition
                                               Requirements rule (80 FR 51992, August                  plan and relevant ambient CO air                      number 20 was added entitled
                                               27, 2015) 12 and final rule (81 FR 26697,               quality monitoring data, the EPA finds                ‘‘Colorado On-Board Diagnostic (OBD)
                                               May 4, 2016).13                                         that the increase in the new vehicle                  Test Analyzer System;’’ a new definition
                                                                                                       seven-year I/M test exemption will not                number 22 was added entitled
                                               b.) Evaluation of the Extension of the                  have an adverse effect on the approved                ‘‘Diagnostic Trouble Code (DTC);’’ and,
                                               I/M Test Exemption From Four to Seven                   revised Metro-Denver CO maintenance                   definitions number 23 to 43 were
                                               Years                                                   plan (72 FR 46148, August 17, 2007).                  renumbered. A new definition number
                                                 Included with the March 15, 2013                      We also find that the emissions from the              44 was added and entitled ‘‘On-Board
                                               Reg. No. 11 SIP revision submittal were                 revised seven-year I/M test exemption                 Diagnostics II (OBD or OBDII) Test’’ and
                                               revised provisions to increase the I/M                  are offset by the additional reduction in             definitions numbered 45 to 52 were
                                               test exemption for newer vehicles from                  ozone precursor emissions of NOX and                  renumbered.
                                               the EPA-approved four-year exemption                    TGH realized through the State’s                         Part A, section IV: Section IV. D was
                                               to seven years. Additional information                  implementation of OBD testing that                    removed which involved obsolete
                                               and rationale were provided by the                      covers the Metro-Denver/NFR 2008 8-                   language and section IV.E was
                                               Division in the ‘‘Air Quality Control                   hour ozone NAAQS nonattainment area.                  renumbered IV.D and also had obsolete
                                               Commission Regulation Number 11                                                                               language removed.
                                                                                                       c.) Gas Cap Full Retest Clarification and
                                               Motor Vehicle Emissions Detailed Issue                                                                           2.) Part B, section IX: Section IX was
                                                                                                       Other Minor Non-Substantive Revisions
                                               Statement’’ which was part of the SIP                                                                         added and is entitled ‘‘Approval of the
                                               submittal’s Administrative                                 There was a clarification to the gas               Colorado On-Board Diagnostic (OBD)
                                               Documentation.                                          cap test requirements and several other               Test Analyzer System. Also, Part B,
                                                 The Division’s AQCC issue statement                   minor revisions included with the                     section X was added and is entitled
                                               noted that the revision to Reg. No. 11,                 March 15, 2013 Reg. No. 11 SIP revision               ‘‘The Colorado On-Board Diagnostic
                                               to increase new vehicle model year                      submittal.                                            (OBD) Test Analyzer System.’’
                                               exemptions from four years to seven                        The state revised Reg. No. 11 to clarify              3.) Part C, title: The title was modified
                                               years, was allowed by Colorado law                      that, in accordance with federal law, a               by adding ‘‘On-Board Diagnostics
                                               which authorizes the AQCC to extend                     full I/M retest is required after a test              (OBD).’’
                                                                                                       failure due to the lack of a gas cap or                  Part C, section I.C.3: This involved
                                                 12 ‘‘Determinations of Attainment by the              a faulty gas cap. The EPA notes that                  minor language changes to clarify data
                                               Attainment Date, Extensions of the Attainment           missing or malfunctioning gas caps                    transmission and analyzer requirements.
                                               Date, and Reclassification of Several Areas             automatically cause a test failure and
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                                               Classified as Marginal for the 2008 Ozone National
                                                                                                                                                                Part C, section II.A: This section was
                                               Ambient Air Quality Standards,’’ 80 FR 51992,           require replacement of the cap and then               renumbered from II.A through II.F to
                                               dated August 27, 2015.                                  a full emissions retest. The full retest is           instead become II.A.1 through II.A.11.
                                                 13 ‘‘Determinations of Attainment by the              necessary because the gas cap seals and               Minor clarification language was added
                                               Attainment Date, Extensions of the Attainment           pressurizes the entire fuel evaporative               along with revised references to sections
                                               Date, and Reclassification of Several Areas
                                               Classified as Marginal for the 2008 Ozone National
                                                                                                       emissions control system. If other                    in Part C.
                                               Ambient Air Quality Standards,’’ 81 FR 26697,           components of the evaporative system                     Part C, section II.G: This section was
                                               dated May 4, 2016.                                      are functional, there will be no effect on            renumbered to II.B and clarifying


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                                               53376                   Federal Register / Vol. 81, No. 156 / Friday, August 12, 2016 / Proposed Rules

                                               language was added regarding OBD                        revisions were subsequently submitted                 11. Appendix A. The technical
                                               testing. Sections II.G.1 through II.G.6                 to the EPA on March 3, 2014. The                      documents that are incorporated by
                                               were renumbered II.B.1 through II.B.6.                  sections of Reg. No. 11 that were revised             reference into Reg. No. 11 are:
                                               Section II.B.4 had clarifying language                  with the State’s March 3, 2014 submittal              Attachment I ‘‘PDF 1000 Scanner,’’
                                               added regarding applicable vehicles that                were as follows:                                      Attachment II ‘‘Thermal Transfer
                                               were unable to be tested with the IM240                    a.) Part A, section I.C.3.c: This section          Printer,’’ and Attachment III ‘‘Colorado
                                               test would then be OBD tested.                          was revised to clarify that the seven year            Automobile Dealers Transient Mode
                                                  Part C, section II.C: A new section II.C             new vehicle exemption, which excused                  Test Analyzer System.’’
                                               (II.C 1 through II.C.9) was added which                 vehicles from an I/M test for seven years                2.) Updated Attachment IV, entitled
                                               specifies which vehicles are to be OBD                  and was previously adopted by the                     ‘‘Colorado Department of Public Health
                                               tested and the requirements and testing                 AQCC in December 2012, would take                     and Environment Specification for
                                               procedures for an OBD test.                             effect on January 1, 2015. Also, this                 Colorado 97 Analyzer,’’ to reflect
                                                  Part C, section III.A: This section had              exemption would apply retroactively to                technological changes to data
                                               clarifying language added and sections                  existing vehicles in their fourth, fifth,             specifications, communications
                                               III.B and III.C were removed as they                    and sixth years of service.                           protocols, and forms generation.
                                               addressed the model year 1996 and                          b.) Part A, sections I.C.8, I.C.9, and                3.) Included a new Attachment V
                                               newer visual inspection procedures.                     I.C.10: These sections were revised to                ‘‘Test Analyzer Specification for On-
                                               The remaining applicable portions of                    clarify ambiguous, contradictory and                  board Diagnostics’’ for licensed fleets
                                               section III.C were then renumbered III.B.               obsolete Reg. No. 11 language                         who self-inspect their own vehicles.
                                               Sections III.D and III.E were renumbered                concerning the issuance of and duration               Note: Part B section X required this Test
                                               to III.C and III.D.                                     periods for ‘‘Verification of Emissions               Analyzer Specification to be in place by
                                                  Part C, section IV: A new section IV                 Test’’ exemption windshield stickers                  December 31, 2013.
                                               was added which addressed the                           issued by motor vehicle dealers. Part A,                 g.) Appendix B of Reg. No. 11 was
                                               requirements for applicable vehicles                    section I.C.8 was further clarified to                revised as follows:
                                               (1996 through those vehicles that had                   note that vehicles in their fourth, fifth,               1.) Attachment II; the ‘‘Calibration
                                               reached their 11th model year of age) to                and sixth years of service would have                 Span Gas’’ labels were updated to reflect
                                               be evaluated with and OBD test.                         the seven year exemption applied                      the current version of the State-official
                                                  Part C, prior section IV: The existing               retroactively.                                        labels.
                                               section IV was renumbered section V                        c.) Part A, section I.C.3 and Part C,                 h.) Overall revised formatting and
                                               and also modified with clarifying                       sections III and IV: These sections were              other non-substantive changes were
                                               language regarding the requirement for                  revised to clarify that the seven-year                made throughout Reg. No. 11.
                                               a full retest of vehicles which                         new vehicle exemption from I/M
                                                                                                       testing, OBD testing requirements and                 VII. Conclusion
                                               previously had a missing or
                                               malfunctioning gas cap.                                 procedures, and other changes made to                    Our review of the State’s Reg. No. 11
                                                  Part C, section VIII.A.2: A new section              Reg. No. 11 by the AQCC in December                   revisions, as presented above in sections
                                               VIII.A.2 was added which states that                    2012, would go into effect January 1,                 IV, V, and VI, involved: 1.) The Low
                                               vehicles in their model years seven                     2015. In addition, the I/M visual                     Emitter Index (LEI) and Clean Screen
                                               through 10 need to meet the OBD                         inspection procedures for 1996 and                    program components, 2.) The On-Board
                                               passing criteria in Part F, section VII.                newer vehicles would be retained                      Diagnostics (OBD) I/M testing program
                                               Sections VIII.A.2 through VIII.A.4 were                 through December 2014.                                component, 3.) The seven model-year
                                               renumbered VIII.A.3 through VIII.A.5.                      d.) Part C, section C VIII.B.3: This               exemption from I/M testing provisions,
                                                  Part C, sections VIII.B.1, VIII.B.2, and             section was revised to codify in Reg. No.             4.) The requirement for a full I/M retest
                                               VIII.B.3: These sections had minor                      11 the vehicle emissions repair cost                  after the replacement of a missing or
                                               wording changes and deletion of                         waiver amount of $715. The AQCC has                   malfunctioning gas cap, 5.) New
                                               obsolete language.                                      previously directed the Division to                   definitions, clarification language, and
                                                  Part C, sections VIII.D.A through                    change the amount from $450 to $715 in                removal of obsolete language, 6.)
                                               VIII.D.E: These sections were                           November 2002, which was done.                        Numerous revisions to Reg. No. 11 Parts
                                               renumbered VIII.D.1 through VIII.D.5.                   However, at that time, the AQCC had                   A, B, C, F, G, Appendix A, and
                                                  Part C, sections IX.G and X.A: These                 declined to note the changed repair                   Appendix B, and 7.) Overall formatting,
                                               sections had minor clarifying language                  amount in the text of Reg. No. 11.                    correction of typographic errors and
                                               added.                                                     e.) Part C, section VIII.D.4: This                 other non-substantive changes. Based on
                                                  4.) Part F, section V: This section was              section was revised regarding the                     our review and evaluation discussion
                                               entitled ‘‘Visible Smoke.’’                             qualifying criteria for an economic                   presented above, we have determined
                                                  Part F, section VII: A new section VII               hardship waiver for a vehicle failing its             that the Reg. No. 11 SIP revisions,
                                               was added (sections VII.A through                       emissions test. Section VIII.D.4 was                  submitted by the State in letters dated
                                               VII.F) which stated the required OBD                    further revised to allow the economic                 June 11, 2008, March 15, 2013 and
                                               diagnostic inspection test passing                      hardship waiver to apply to households                March 3, 2014 sufficiently address
                                               criteria.                                               owning two vehicles rather than                       applicable provisions in 40 CFR 51,
                                                  5.) Part G: This part had previously                 restricting hardship waivers to                       Subpart S, 40 CFR 85, Subpart W, and
                                               contained obsolete high-emitting                        households owning only one vehicle.                   applicable EPA guidance for I/M
                                               vehicle identification pilot project                       f.) Appendix A of Reg. No. 11 was                  programs and that our approval is
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                                               language which was removed and Part                     revised as follows:                                   warranted.
                                               G was retitled ‘‘Reserved.’’                               1.) Appendix A was revised to remove
                                                                                                       the text of three technical document                  VIII. Consideration of Section 110(1) of
                                               VI. EPA’s Evaluation of the State’s 2013                attachments and to note that the                      the Clean Air Act
                                               Revisions to Part A, Part C, Appendix                   documents are available at CDPHE’s                      Section 110(1) of the CAA states that
                                               A, and Appendix B                                       Emissions Technical Center Procedures                 a SIP revision cannot be approved if the
                                                 In 2013, the AQCC adopted several                     Manual. The technical documents are                   revision would interfere with any
                                               minor changes to Reg. No. 11. These                     incorporated by reference into Reg. No.               applicable requirement concerning


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                                                                       Federal Register / Vol. 81, No. 156 / Friday, August 12, 2016 / Proposed Rules                                         53377

                                               attainment and reasonable further                       (NOX and TGH). As noted above, the                    the replacement of a missing or
                                               progress towards attainment of a                        EPA evaluated this small increase in                  malfunctioning gas cap, new
                                               NAAQS or any other applicable                           estimated CO emissions and has                        definitions, clarification language,
                                               requirement of the CAA. The only                        concluded it will not have a detrimental              removal of obsolete language, numerous
                                               portions of the Reg. No. 11 revisions                   effect on the approved revised Metro-                 minor revisions to Parts A, B, C, F, G,
                                               that we described above which we                        Denver CO maintenance plan (72 FR                     Appendix A and Appendix B of Reg.
                                               believe require further consideration                   46148, August 17, 2007). Our evaluation               No. 11, overall formatting, correction of
                                               with regard to section 110(l) of the CAA                considered the negligible increase in CO              typographic errors and other non-
                                               are the revisions to the Clean Screen                   emissions of approximately four tons                  substantive changes do not affect
                                               program to add the LEI component and                    per day as compared to the CO mobile                  emissions and therefore do not have
                                               the seven-year I/M test exemption.                      sources emission inventory data in the                CAA section 110(l) implications.
                                                  For the LEI component of the Clean                   Metro-Denver CO maintenance plan. As                    In view of the above, the EPA
                                               Screen program, we noted above that                     we noted above, the maintenance plan’s                proposes to find that the revisions to
                                               with our December 14, 2001 approval                     estimated 2015 mobile source CO                       Colorado’s Reg. No. 11 that are
                                               the Metro-Denver CO maintenance plan                    emissions are 1,416 tpd and the                       contained in the State’s SIP submittals
                                               and implementation of the Clean Screen                  estimated 2021 (last year of the                      dated June 11, 2008, March 15, 2013
                                               program as adopted at that time, the                    maintenance plan) mobile source CO                    and March 3, 2014 will not interfere
                                               State concluded there would be an                       emissions are 1,372.10 tpd. Therefore,                with attainment, reasonable further
                                               approximate 4% disbenefit for CO                        the four tpd increase would be 0.28% of               progress, or any other applicable
                                               emissions and a 7% disbenefit for HC                    the 2015 mobile source CO emissions                   requirement of the CAA.
                                               emissions if it was assumed that 35% of                 and the 0.29% of the 2021 mobile
                                               the eligible vehicles were clean-                       source CO emissions. We also reviewed                 IX. Proposed Action
                                               screened. Our further evaluation of the                 available state-certified and EPA-                      The EPA is proposing approval of the
                                               LEI component of the Clean Screen                       reviewed ambient CO air quality                       June 11, 2008 submitted SIP revisions to
                                               program, as discussed above in section                  monitoring data from the EPA’s AQS                    Colorado’s Regulation Number 11, Part
                                               IV, involved the review of the State’s                  database from 2007 through 2015. These                A, Part C, Part F, and Appendix A. The
                                               Clean Screen annual reports for 2009,                   data show no exceedance or violation of               EPA notes that Part F, section III.A.2
                                               2011, 2012 and 2013. The annual                         the CO NAAQS. We further noted that                   was also provided with the State’s June
                                               reports detailed the overall effectiveness              the minor increase in reductions of                   11, 2008 submittal. This section
                                               of the Clean Screen program and also                    ozone precursor emissions of NOX and                  contains IM240 test light duty vehicle
                                               contained the results of the random 2%                  TGH will be beneficial as the Metro-                  emissions cutpoints for 1996 and newer
                                               sampling for the LEI component. The                     Denver/NFR 2008 8-hour ozone NAAQS                    vehicles (all in grams per mile). The CO,
                                               data from the State’s Clean Screen                      nonattainment area continues to work                  HC, and NOX entries for calendar year
                                               reports demonstrate that the disbenefit                 towards attainment of that NAAQS.                     2006 are incorrect as the State had
                                               from the Clean Screen program,                             With respect to other NAAQS that                   previously provided an August 8, 2006
                                               including its LEI component, continue                   have the potential to be affected by our              SIP revision submittal to remove these
                                               to be within the original estimates from                proposed approval of the above Reg. No.               2006 cutpoints (i.e., HC 0.6, CO 10.0,
                                               the Reg. No. 11 revisions that we                       11 revisions, we note that the Metro-                 and NOX 1.5). EPA approved the
                                               approved on December 14, 2001.                          Denver area is designated
                                               Although those original 2001 disbenefit                                                                       removal of these 2006 cutpoints on
                                                                                                       ‘‘unclassifiable/attainment’’ for the 1-              December 20, 2012 (77 FR 75388).
                                               estimates (4% for CO, 7% for HC, and
                                                                                                       hour NO2 NAAQS 14 and the annual and                    In addition, the EPA is proposing
                                               35% vehicles being clean-screened)
                                                                                                       24-hour PM2.5 NAAQS 15 (see: 40 CFR                   approval of the March 15, 2013
                                               were prepared with then current tools,
                                                                                                       81.306). We reviewed available state-                 submitted SIP revisions to Regulation
                                               the Clean Screen program and LEI
                                                                                                       certified and EPA-reviewed ambient air                Number 11, Part A, Part B, Part C, Part
                                               component continue to perform within
                                                                                                       quality monitoring data for the 1-hour                F, and Part G. Finally, the EPA is
                                               those estimates. Also, from the above
                                                                                                       NO2 NAAQS, and the annual and 24-                     proposing approval of the March 3, 2014
                                               four years of Clean Screen annual
                                                                                                       hour PM2.5 NAAQS. Our review                          submitted SIP revisions to Regulation
                                               reports that we evaluated, the State’s
                                               Reg. No. 11 revisions original estimate                 involved EPA’s AQS database and                       Number 11, Part A, Part C, Appendix A,
                                               of 35% of the fleet being clean-screened                relevant data from 2007 through 2015.                 and Appendix B.
                                               has not be been achieved. Based on the                  The data demonstrate continued
                                                                                                       attainment of the 1-hour NO2 and PM2.5                X. Incorporation by Reference
                                               four referenced Clean Screen reports, we
                                               note that 22% or less of the eligible                   annual and 24-hour NAAQS in the                         In this rule, the EPA is proposing to
                                               vehicles have been clean-screened.                      Metro-Denver area.                                    include in a final EPA rule regulatory
                                               Therefore, the actual emissions                            In addition to the above, we have                  text that includes incorporation by
                                               reduction disbenefit has been less than                 determined the revisions to Reg. No. 11               reference. In accordance with
                                               predicted as more vehicles have then                    contained in all three SIP revision                   requirements of 1 CFR 51.5, the EPA is
                                               been required to go through the IM240                   submittals involving the language                     proposing to incorporate by reference
                                               test.                                                   changes necessary to implement the LEI                Colorado Air Quality Control
                                                  With regard to the seven-year new                    and Clean Screen program components,                  Commission, Regulation Number 11 as
                                               vehicle exemption from I/M testing, as                  the OBD I/M testing program                           discussed in section IX of this preamble.
                                                                                                       component, the seven model-year                       The EPA has made, and will continue
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                                               explained above in section V, we noted
                                               that with the implementation of the Reg.                exemption from I/M testing provisions,                to make, these documents generally
                                               No. 11 provisions of the combination of                 the requirement for a full I/M retest after           available electronically through
                                               the OBD testing component and the                                                                             www.regulations.gov and/or at the EPA
                                                                                                         14 1-hour NO NAAQS: 75 FR 6474, February 9,
                                               seven-year exemption from I/M testing                                  2                                      Region 8 Office (please contact the
                                                                                                       2010.
                                               there was estimated to be a small                         15 PM                                               person identified in the FOR FURTHER
                                                                                                               2.5 NAAQS: Annual NAAQS (78 FR 3086,
                                               increase in CO emissions and a minor                    January 15, 2013); 2006 24-hour NAAQS (71 FR          INFORMATION CONTACT section of this
                                               reduction in ozone precursor emissions                  61144, October 17, 2006).                             preamble for more information).


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                                               53378                   Federal Register / Vol. 81, No. 156 / Friday, August 12, 2016 / Proposed Rules

                                               XI. Statutory and Executive Order                       implications and will not impose                      www.regulations.gov or via email to
                                               Reviews                                                 substantial direct costs on tribal                    aburano.douglas@epa.gov. For
                                                  Under the CAA, the Administrator is                  governments or preempt tribal law as                  comments submitted at Regulations.gov,
                                               required to approve a SIP submission                    specified by Executive Order 13175 (65                follow the online instructions for
                                               that complies with the provisions of the                FR 67249, November 9, 2000).                          submitting comments. Once submitted,
                                               Act and applicable federal regulations                                                                        comments cannot be edited or removed
                                                                                                       List of Subjects in 40 CFR Part 52
                                               [42 U.S.C. 7410(k), 40 CFR 52.02(a)].                                                                         from Regulations.gov. For either manner
                                                                                                         Environmental protection, Air                       of submission, EPA may publish any
                                               Thus, in reviewing SIP submissions, the                 pollution control, Carbon monoxide,
                                               EPA’s role is to approve state choices,                                                                       comment received to its public docket.
                                                                                                       Incorporation by reference,                           Do not submit electronically any
                                               provided that they meet the criteria of                 Intergovernmental relations, Nitrogen
                                               the CAA. Accordingly, this proposed                                                                           information you consider to be
                                                                                                       dioxide, Ozone, Particulate matter,                   Confidential Business Information (CBI)
                                               action merely approves some state law                   Reporting and recordkeeping
                                               as meeting federal requirements and                                                                           or other information whose disclosure is
                                                                                                       requirements, and Volatile organic                    restricted by statute. Multimedia
                                               disapproves other state law because it                  compounds.
                                               does not meet federal requirements; this                                                                      submissions (audio, video, etc.) must be
                                               proposed action does not impose                           Authority: 42 U.S.C. 7401 et seq.                   accompanied by a written comment.
                                               additional requirements beyond those                      Dated: July 26, 2016.
                                                                                                                                                             The written comment is considered the
                                               imposed by state law. For that reason,                                                                        official comment and should include
                                                                                                       Shaun L. McGrath,
                                               this proposed action:                                                                                         discussion of all points you wish to
                                                                                                       Regional Administrator, Region 8.                     make. EPA will generally not consider
                                                  • Is not a ‘‘significant regulatory                  [FR Doc. 2016–18878 Filed 8–11–16; 8:45 am]
                                               action’’ subject to review by the Office                                                                      comments or comment contents located
                                               of Management and Budget under
                                                                                                       BILLING CODE 6560–50–P                                outside of the primary submission (i.e.
                                               Executive Order 12866 (58 FR 51735,                                                                           on the web, cloud, or other file sharing
                                               Oct. 4, 1993);                                                                                                system). For additional submission
                                                                                                       ENVIRONMENTAL PROTECTION                              methods, please contact the person
                                                  • Does not impose an information                     AGENCY
                                               collection burden under the provisions                                                                        identified in the FOR FURTHER
                                                                                                                                                             INFORMATION CONTACT section. For the
                                               of the Paperwork Reduction Act (44                      40 CFR Part 52
                                               U.S.C. 3501 et seq.);                                                                                         full EPA public comment policy,
                                                                                                       [EPA–R05–OAR–2015–0724; FRL–9950–51–                  information about CBI or multimedia
                                                  • Is certified as not having a                       Region 5]
                                               significant economic impact on a                                                                              submissions, and general guidance on
                                               substantial number of small entities                                                                          making effective comments, please visit
                                                                                                       Air Plan Approval; Indiana; Abengoa
                                               under the Regulatory Flexibility Act (5                                                                       http://www2.epa.gov/dockets/
                                                                                                       Bioenergy of Indiana, Commissioner’s
                                               U.S.C. 601 et seq.);                                                                                          commenting-epa-dockets.
                                                                                                       Order
                                                  • Does not contain any unfunded                                                                            FOR FURTHER INFORMATION CONTACT:
                                               mandate or significantly or uniquely                    AGENCY:  Environmental Protection                     Jenny Liljegren, Physical Scientist,
                                               affect small governments, as described                  Agency (EPA).                                         Attainment Planning and Maintenance
                                               in the Unfunded Mandates Reform Act                     ACTION: Proposed rule.                                Section, Air Programs Branch (AR–18J),
                                               of 1995 (Pub. L. 104–4);                                                                                      Environmental Protection Agency,
                                                                                                       SUMMARY:   The Environmental Protection
                                                  • Does not have federalism                                                                                 Region 5, 77 West Jackson Boulevard,
                                                                                                       Agency (EPA) is proposing to approve a                Chicago, Illinois 60604, (312) 886–6832,
                                               implications as specified in Executive
                                                                                                       revision to the Indiana State                         Liljegren.Jennifer@epa.gov.
                                               Order 13132 (64 FR 43255, Aug. 10,
                                                                                                       Implementation Plan (SIP) submitted by                SUPPLEMENTARY INFORMATION: In the
                                               1999);
                                                                                                       the Indiana Department of
                                                  • Is not an economically significant                                                                       Final Rules section of this Federal
                                                                                                       Environmental Management (IDEM) on                    Register, EPA is approving the State’s
                                               regulatory action based on health or
                                                                                                       October 16, 2015. The submittal consists              SIP submittal as a direct final rule
                                               safety risks subject to Executive Order
                                                                                                       of an order issued by the Commissioner                without prior proposal because the
                                               13045 (62 FR 19885, April 23, 1997);
                                                                                                       of IDEM (Commissioner’s Order No.
                                                  • Is not a significant regulatory action                                                                   Agency views this as a noncontroversial
                                                                                                       2015–01) approving alternative control                submittal and anticipates no adverse
                                               subject to Executive Order 13211 (66 FR
                                                                                                       technology requirements for Abengoa                   comments. A detailed rationale for the
                                               28355, May 22, 2001);
                                                                                                       Bioenergy of Indiana (Abengoa). These
                                                  • Is not subject to requirements of                                                                        approval is set forth in the direct final
                                                                                                       requirements include the use of a                     rule. If no adverse comments are
                                               Section 12(d) of the National
                                                                                                       carbon adsorption/absorption                          received in response to this rule, no
                                               Technology Transfer and Advancement
                                                                                                       hydrocarbon vapor recovery system                     further activity is contemplated. If EPA
                                               Act of 1995 (15 U.S.C. 272 note) because
                                                                                                       with a minimum overall control                        receives adverse comments, the direct
                                               application of those requirements would
                                                                                                       efficiency of 98% to control volatile                 final rule will be withdrawn and all
                                               be inconsistent with the CAA; and,
                                                  • Does not provide the EPA with the                  organic compound (VOC) emissions                      public comments received will be
                                               discretionary authority to address, as                  from the ethanol loading racks at                     addressed in a subsequent final rule
                                               appropriate, disproportionate human                     Abengoa. A continuous emissions                       based on this proposed rule. EPA will
                                               health or environmental effects, using                  monitoring system (CEMS) must be used                 not institute a second comment period.
                                               practicable and legally permissible                     to monitor the carbon adsorption/                     Any parties interested in commenting
                                               methods, under Executive Order 12898                    absorption hydrocarbon vapor recovery                 on this action should do so at this time.
ehiers on DSK5VPTVN1PROD with PROPOSALS




                                               (59 FR 7629, Feb. 16, 1994).                            system for breakthrough of VOC                        Please note that if EPA receives adverse
                                                  The SIP is not approved to apply on                  emissions.                                            comment on an amendment, paragraph,
                                               any Indian reservation land or in any                   DATES: Comments must be received on                   or section of this rule and if that
                                               other area where the EPA or an Indian                   or before September 12, 2016.                         provision may be severed from the
                                               tribe has demonstrated that a tribe has                 ADDRESSES: Submit your comments,                      remainder of the rule, EPA may adopt
                                               jurisdiction. In those areas of Indian                  identified by Docket ID No. EPA–R05–                  as final those provisions of the rule that
                                               Country, the rule does not have tribal                  OAR–2015–0724, at http://                             are not the subject of an adverse


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Document Created: 2018-02-09 11:33:15
Document Modified: 2018-02-09 11:33:15
CategoryRegulatory Information
CollectionFederal Register
sudoc ClassAE 2.7:
GS 4.107:
AE 2.106:
PublisherOffice of the Federal Register, National Archives and Records Administration
SectionProposed Rules
ActionProposed rule.
DatesWritten comments must be received on or before September 12, 2016.
ContactTim Russ, Air Program, EPA, Region 8, Mailcode 8P-AR, 1595 Wynkoop, Denver, Colorado 80202-1129, (303) 312- 6479, [email protected]
FR Citation81 FR 53370 
CFR AssociatedEnvironmental Protection; Air Pollution Control; Carbon Monoxide; Incorporation by Reference; Intergovernmental Relations; Nitrogen Dioxide; Ozone; Particulate Matter; Reporting and Recordkeeping Requirements and Volatile Organic Compounds

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