[Federal Register Volume 75, Number 243 (Monday, December 20, 2010)]
[Notices]
[Pages 79370-79374]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2010-31909]
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ENVIRONMENTAL PROTECTION AGENCY
[FRL-9241-3]
Official Release of the MOVES2010a and EMFAC2007 Motor Vehicle
Emissions Models for Transportation Conformity Hot-Spot Analyses and
Availability of Modeling Guidance
AGENCY: Environmental Protection Agency (EPA).
ACTION: Notice of Availability.
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SUMMARY: This Notice announces the availability of two new EPA guidance
documents for: completing quantitative particulate matter
(PM2.5 and PM10) hot-spot analyses using EPA's
Motor Vehicle Emissions Simulator model (MOVES), California's EMission
FACtor model (EMFAC), and other models, and completing project-level
carbon monoxide (CO) analyses using MOVES. These guidance documents
will assist practitioners with implementing MOVES, EMFAC, air quality
models, and applicable requirements.
EPA is approving the latest version of the MOVES model (MOVES2010a)
for official use for quantitative CO, PM2.5, and
PM10 hot-spot analyses outside of California. This notice
also announces a two-year grace period before the MOVES2010a emissions
model is required to be used in quantitative CO and PM hot-spot
analyses for project-level conformity determinations outside
California.
EPA is also approving the latest version of the EMFAC model
(EMFAC2007) for quantitative PM hot-spot analyses for transportation
conformity purposes within California.\1\ This notice announces a two-
year grace period before EMFAC2007 is required to be used for
quantitative PM hot-spot analyses for project-level conformity
determinations in California. While EPA is approving the MOVES2010a and
EMFAC2007 models today for project-level transportation conformity
purposes, this notice is applicable to current and future versions of
the MOVES and EMFAC models, unless EPA notes otherwise when approving
the models for conformity purposes.
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\1\ EPA previously approved EMFAC2007 for quantitative CO hot-
spot analyses in California.
DATES: EPA's approval of the MOVES2010a and EMFAC2007 emissions models
is effective December 20, 2010. Today's approval also starts a two-year
transportation conformity grace period that ends on December 20, 2012,
after which:
MOVES2010a (outside of California) is required to be used
for new quantitative CO, PM10, and PM2.5 hot-spot
analyses for transportation conformity purposes; and
EMFAC2007 (within California) is required to be used for
new PM10 and PM2.5 hot-spot analyses for
transportation conformity purposes.
These models can also be used during the grace period, as described
further in this notice.
FOR FURTHER INFORMATION CONTACT: For questions regarding the official
release of MOVES2010a for quantitative CO, PM2.5, and
PM10 hot-spot analyses, contact Meg Patulski at
[email protected], (734) 214-4842, Transportation and Regional
Programs Division, Office of Transportation and Air Quality, EPA, 2000
Traverwood Road, Ann Arbor, MI 48105. For questions regarding the
official release of EMFAC2007 for quantitative PM2.5 and
PM10 hot-spot analyses in California, contact Karina
O'Connor at [email protected], (775) 833-1276, Air Planning Office
(AIR-2), Air Division, EPA, Region 9, 75 Hawthorne Street, San
Francisco, CA, 94105-3901. Technical questions about completing
emissions and air quality modeling for CO and PM hot-spot analyses can
also be sent to [email protected].
SUPPLEMENTARY INFORMATION:
The contents of this notice are as follows:
I. Background
II. Using MOVES at the Project Level
III. Using EMFAC at the Project Level
IV. Availability of Modeling Guidance
I. Background
A. What is transportation conformity?
Transportation conformity is a Clean Air Act (CAA) requirement to
ensure that Federally supported highway and transit activities are
consistent with (``conform to'') the State air quality implementation
plan (SIP). Conformity to a SIP means that a transportation activity
will not cause or contribute to new air quality violations, worsen
existing violations, or delay timely attainment of the national ambient
air quality standards (NAAQS) or any interim milestone. EPA's
transportation conformity regulations (40 CFR Parts 51.390 and 93)
describe how Federally funded and approved highway and transit projects
meet these statutory requirements.
B. Hot-Spot Analyses
A hot-spot analysis in the context of transportation conformity is
defined at 40 CFR 93.101 as an estimation of likely future localized
pollutant concentrations and a comparison of those concentrations to
the relevant
[[Page 79371]]
NAAQS. A hot-spot analysis assesses the air quality impacts on a scale
smaller than an entire nonattainment or maintenance area, including,
for example, congested highways or transit terminals. Such an analysis
of the area substantially affected by the project is a means of
demonstrating that statutory requirements are met for the relevant
NAAQS in the project area. When a hot-spot analysis is required, it is
included within a project-level conformity determination.
Sections 93.116 and 93.123 of the conformity rule contain the
requirements for when a CO, PM10, or PM2.5 hot-
spot analysis is required for a project-level conformity determination.
In CO nonattainment and maintenance areas, a hot-spot analysis is
required for all Federal non-exempt projects, with quantitative hot-
spot analyses being required for congested and high volume
intersections and other projects (40 CFR 93.123(a)(1)).
The conformity rule requires a hot-spot analysis for only a subset
of all Federal non-exempt highway and transit projects in PM
nonattainment and maintenance areas (40 CFR 93.123(b)(1)), such as new
or expanded highway or transit projects with significant increases in
diesel traffic. However, unlike CO hot-spot analyses, to date only
qualitative PM hot-spot analyses have been required.\2\ Section
93.123(b) states that the requirement to conduct quantitative analyses
for PM does not take effect until EPA releases modeling guidance on the
subject and announces in the Federal Register that these requirements
are in effect.
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\2\ For more information on qualitative PM hot-spot analyses,
see EPA and FHWA's joint ``Transportation Conformity Guidance for
Qualitative Hot-spot Analyses in PM2.5 and
PM10 Nonattainment and Maintenance Areas'' (EPA-420-B-06-
902, March 2006).
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Today's notice announces the availability of such final modeling
guidance: ``Transportation Conformity Guidance for Quantitative Hot-
Spot Analyses in PM2.5 and PM10 Nonattainment and
Maintenance Areas'' (EPA-420-B-10-040). This guidance describes
conformity requirements for quantitative PM hot-spot analyses; provides
technical guidance on estimating project emissions using EPA's MOVES
model, California's EMFAC model, and other methods; outlines how to
apply air quality dispersion models for quantitative PM hot-spot
analyses; and includes other resources and examples to assist in
conducting quantitative PM hot-spot modeling analyses. EPA has
coordinated with the Department of Transportation (DOT) in developing
this final guidance.
In addition, EPA stated in the preamble to the March 10, 2006 final
conformity rule that finalizing the MOVES emissions model was critical
before quantitative PM hot-spot analyses could be required, due to the
limitations of applying MOBILE6.2 for PM at the project level.\3\ With
today's notice approving MOVES2010a and EMFAC2007 for quantitative PM
hot-spot analyses (see Sections II and III) and the release of
associated modeling guidance (see Section IV.A), the requirement to
conduct quantitative PM hot-spot analyses as required by 40 CFR
93.123(b)(4) is now in effect, subject to the conformity grace period
for using new emissions models for such analyses.
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\3\ See EPA's March 2006 final conformity rule for further
information (71 FR 12498-12502).
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C. Latest Emissions Models and Hot-Spot Analyses
CAA section 176(c)(1) states that ``* * * [t]he determination of
conformity shall be based on the most recent estimates of emissions,
and such estimates shall be determined from the most recent population,
employment, travel, and congestion estimates. * * *'' The
transportation conformity rule (40 CFR 93.111) requires that conformity
analyses be based on the latest motor vehicle emissions model approved
by EPA.
The conformity rule states that EPA will consult with the DOT to
establish a grace period following the specification of any new
emissions model. The rule further provides for a grace period for new
emissions models of between 3-24 months, to be established by
notification in the Federal Register (40 CFR 93.111(b)).
In consultation with DOT, EPA must consider various factors when
establishing a grace period for conformity determinations, including
the degree of change in emissions models and the effects of the new
model on the transportation planning process (40 CFR 93.111(b)(2)).
The conformity rule provides some flexibility for hot-spot analyses
that are started before the end of a grace period. A conformity
determination for a transportation project may be based on a previous
model if the analysis was begun before or during the grace period, and
if the final environmental document for the project is issued no more
than three years after the issuance of the draft environmental document
(40 CFR 93.111(c)).
II. Using MOVES at the Project Level
A. What is MOVES?
MOVES is EPA's state-of-the-art, upgraded model for estimating
emissions from cars, trucks, motorcycles, and buses. MOVES is based on
an analysis of millions of emission test results and considerable
advances in the Agency's understanding of vehicle emissions. EPA
released MOVES2010 in December 2009, and then released minor updates to
the model in the MOVES2010a version in August 2010.\4\
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\4\ See the EPA document: ``EPA Releases MOVES2010a Mobile
Source Emissions Model Update: Questions and Answers'' (EPA-420-F-
10-050, August 2010) at: http://www.epa.gov/otaq/models/moves/index.htm#generalinfo.
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On March 2, 2010, EPA approved the use of MOVES2010 in official SIP
submissions to EPA and for certain transportation conformity analyses
outside of California (75 FR 9411). The March 2010 approval also
applies to the MOVES2010a version for SIPs and regional conformity
analyses.\5\ However, until today, EPA has not approved any version of
MOVES for project-level CO and PM analyses, since project-level MOVES
guidance documents were not yet available.\6\
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\5\ EPA has said that it is not considering MOVES2010a a new
emissions model for SIPs and regional conformity analyses under 40
CFR 93.111. The MOVES2010 grace period for regional conformity
analyses (which began on March 2, 2010) applies to the use of
MOVES2010a as well.
\6\ Also see the March 2, 2010 Federal Register notice (75 FR
9413-9414).
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B. Using MOVES2010a for Quantitative CO, PM2.5 and
PM10 Hot-Spot Analyses
In today's notice, EPA is approving MOVES2010a as EPA's official
motor vehicle emissions factor model for project-level CO and PM
analyses outside of California. EPA is also establishing a two-year
grace period for using MOVES2010a for quantitative CO and PM hot-spot
analyses for project-level conformity determinations, as described
further below. This conformity grace period begins today and ends
December 20, 2012. Future updates to the MOVES2010a model will not
start a new conformity grace period for quantitative CO and PM hot-spot
analyses unless EPA notes otherwise.\7\
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\7\ EPA may provide minor, periodic updates to the MOVES model
in order to improve its functionality and performance.
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In deciding the length of the MOVES2010a conformity grace period,
EPA consulted with DOT and considered the degree of change in the model
and the scope of re-planning likely to be necessary for project
development, pursuant to 40 CFR 93.111(b). EPA understands that
[[Page 79372]]
numerous areas will be required to conduct quantitative hot-spot
analyses using MOVES, and sufficient time must be allowed for State and
local agencies to obtain the necessary training and otherwise prepare
to use MOVES for these analyses. The following paragraphs elaborate
further on the factors that were considered in establishing the maximum
two-year conformity grace period for hot-spot analyses with MOVES.
First, EPA considered the time it will take State and local
transportation and air quality agencies to conduct and provide
technical support for quantitative hot-spot analyses. As described in
EPA's new modeling guidance documents (see Section IV), there are
several steps involved in a quantitative PM hot-spot analysis and for
applying MOVES for CO hot-spot analyses, and a significant amount of
instruction will be necessary for these agencies to understand the
context for applying MOVES for these analyses.
Second, State and local agencies will need to become familiar with
the MOVES emissions model. Agencies need to understand how to configure
and run MOVES at the project level for a variety of different types of
projects. The MOVES generation of models is not merely an upgrade of
the previous MOBILE model using more recent emissions data; it involves
brand-new software, designed from the ground up to estimate emissions
at a more detailed level. MOVES output will also need to be prepared
for use in recommended air quality models. This will require many
project sponsors to obtain training in the use of these air quality
models, which are being applied for the first time for localized PM
analyses of transportation projects.
EPA will work with DOT to develop and provide training to address
these concerns, including:
General and detailed overviews of the project-level
guidance documents described in Section IV of this notice.
Technical training for applying MOVES at the project level
consistent with the guidance documents being released today.
Technical training for using recommended air quality
models in accordance with EPA's guidance and regulations.
All of these courses are anticipated to be provided in the form of
webinars, other Web-based courses, conference seminars, or in-person
training. Courses will be developed to address different levels of
State and local expertise as well as different roles and
responsibilities for agencies involved.\8\
\8\ For example, Section 2.9 of the final quantitative PM hot-
spot guidance describes the different roles and responsibilities for
Federal, State, and local agencies for these analyses.
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EPA and DOT intend to maximize training opportunities given
available resources and allow sufficient time so that State and local
agencies become trained. Following training, additional time will also
be needed to gain experience applying guidance and models for real-
world situations.
EPA also considered the need to collect and prepare data required
to run MOVES at the project level. To take advantage of the full
modeling capabilities of MOVES, those conducting hot-spot analyses will
generally need to be collecting or generating data specific to
individual projects, and some project-level data may not readily be
available. Also, the data will need to be entered on the basis of
individual ``links'' to capture vehicle activity occurring on a
specific project.
Finally, EPA considered the general time and monetary resource
constraints in which State and local agencies currently operate. These
agencies need to participate in EPA and DOT training and possibly
provide training to other individuals in their offices. Many agencies
will be implementing the transition to PM and CO hot-spot analyses with
MOVES for projects in several nonattainment and maintenance areas, with
each analysis involving multiple State and local agencies.
C. Implementation of the Conformity Grace Period
EPA has previously described how the conformity grace period for CO
and PM hot-spot analyses will be implemented in the policy guidance for
applying MOVES2010a for these purposes.\9\ For CO hot-spot analyses
outside California that are started during the two-year grace period,
project sponsors can choose to use either MOBILE6.2 or MOVES2010a. EPA
encourages sponsors to use the interagency consultation process to
determine which option may be most appropriate for a given situation.
Any new quantitative CO hot-spot analyses for conformity purposes begun
after the end of the grace period must use MOVES2010a.
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\9\ See Questions 10 and 13 in EPA's ``Policy Guidance on the
Use of MOVES2010 for State Implementation Plan Development, and
Other Purposes,'' (EPA-420-B-09-046, December 2009) at: http://www.epa.gov/otaq/models/moves/420b09046.pdf. Areas outside of
California should refer to Section III on using EMFAC for PM hot-
spot analyses.
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For PM hot-spot analyses, project sponsors can continue to conduct
qualitative PM hot-spot analyses for analyses that are started during
the grace period (40 CFR 93.111(c)).\10\ Quantitative PM hot-spot
analyses can also be completed for conformity purposes during the grace
period, if desired. However, any quantitative PM hot-spot analyses
conducted during the grace period must use MOVES2010a, since MOBILE6.2
does not have the capabilities to produce viable results for project-
level PM emissions analyses and is therefore not appropriate for this
purpose.\11\ Any quantitative PM hot-spot analysis for conformity
purposes begun after the end of the grace period must use MOVES2010a.
The interagency consultation process should be used if it is unclear if
a previous analysis was begun before the end of the grace period. If
you have questions about which model should be used in your conformity
determination, you can also consult with your EPA Regional Office.
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\10\ Since previous emissions models have not been approved in
the past for quantitative PM hot-spot analyses, a qualitative PM
analysis is considered ``the previous version of the model'' for the
purposes of 40 CFR 93.111(c).
\11\ See EPA's March 2006 final rule for further information (71
FR 12498-12502).
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D. Availability of MOVES2010a and Support Materials
Copies of the official version of the MOVES2010a model, along with
user guides and supporting documentation, are available on EPA's MOVES
Web site: http://www.epa.gov/otaq/models/moves/index.htm.
Guidance on how to apply the MOVES model for transportation
conformity purposes can be found on EPA's transportation conformity Web
site at: http://www.epa.gov/otaq/stateresources/transconf/policy.htm.
EPA will continue to update this Web site as other MOVES support
materials and guidance are developed. See Section IV for further
information on the availability of new guidance about using MOVES to
estimate project-level emissions. This guidance applies for MOVES2010a
and future versions of the MOVES model unless EPA notes otherwise.
Individuals who wish to receive EPA announcements related to the
MOVES model can subscribe to the EPA-MOBILENEWS e-mail listserver. For
more information about subscribing to the EPA-MOBILENEWS listserver,
visit EPA's Web site at http://www.epa.gov/otaq/models/mobilelist.htm.
[[Page 79373]]
III. Using EMFAC at the Project Level
A. What is EMFAC?
The EMFAC model is a computer model developed by the California Air
Resources Board (CARB) to estimate emission rates for on-road mobile
sources operating in California for calendar years 1970 to 2040. The
latest version of this model is EMFAC2007, and EPA approved this
version of the model for SIP development in California and for most
transportation conformity analyses (i.e., all regional emissions
analyses and CO hot-spot analyses) on January 18, 2008 (73 FR 3464).
However, EMFAC2007 was not approved for quantitative PM2.5
and PM10 hot-spot analyses at that time.
As stated in the January 2008 notice, EPA believed that modeling
guidance would be necessary before quantitative PM hot-spot analyses
could be required.\12\ With the release of EPA's PM hot-spot guidance,
we can approve EMFAC2007 for quantitative PM hot-spot analyses.
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\12\ See Section II.C of the January 2008 notice for further
information (73 FR 3466).
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B. Using EMFAC2007 for Quantitative PM2.5 and PM10 Hot-Spot Analyses
Today's notice approves EMFAC2007 for project-level
PM2.5 and PM10 analyses in California. This
notice also establishes a two-year grace period for using EMFAC2007 for
quantitative PM hot-spot analyses for project-level conformity
determinations. This grace period begins today and ends December 20,
2012. Future updates to the EMFAC2007 model will not start a new
conformity grace period for quantitative PM hot-spot analyses unless
EPA notes otherwise.
EPA consulted with DOT on the appropriate length of the conformity
grace period for EMFAC2007 and considered the start-up factors
described in 40 CFR 93.111(b). EPA considered how many PM areas are
affected by this transition to quantitative PM hot-spot analyses and
that sufficient time must be allowed for State and local agencies for
all areas subject to this new requirement to obtain the necessary
training and planning to apply EMFAC in California. More details on the
factors considered are included below, and many are similar to those
discussed in Section II for establishing the MOVES grace period.
EPA considered the time it will take State and local agencies in
California to conduct and provide technical support for quantitative PM
hot-spot analyses. These agencies will also need to become familiar
with applying EMFAC2007 at the project level for PM, since the model is
currently not applied in the ``project-level mode'' when developing
inventories for PM SIPs or regional conformity analyses. These agencies
will also need to learn how to prepare EMFAC outputs for recommended
air quality models that are currently not used for transportation
projects.
As described in Section II.B, EPA is working with DOT to develop
and provide new training courses on EPA's quantitative PM hot-spot
guidance, as well as technical training for air quality modeling. EPA
and DOT will be working with California agencies on State and local
agency training for using EMFAC for quantitative PM hot-spot analyses.
Training opportunities will be based on available resources and
consider budgetary and other constraints.
In addition to training needs, EPA also considered the data
collection and preparation for using EMFAC for quantitative PM hot-spot
analyses. For example, project sponsors will need to obtain project-
specific fleet data (as opposed to using EMFAC fleet data for regional
inventories). EMFAC contains fleet data for each nonattainment and
maintenance area in California which are used in the model as
``defaults'' for fleet characteristics used in SIPs and regional
conformity analyses. However, these defaults will not be appropriate
for use as-is in PM hot-spot analyses; project sponsors will need to
make additional effort to obtain fleet information for the specific
project area covered by the PM hot-spot analysis.
Finally, as with the transition to using MOVES, EPA considered the
time required for individuals to participate in future training
courses, the time to learn to apply the guidance and models after
training, and other constraints affecting California agencies. For
example, State agencies will be charged with preparing and supporting
quantitative PM hot-spot analyses for many projects across the State,
which has eleven PM10 and seven PM2.5
metropolitan nonattainment and maintenance areas, as well as isolated
rural PM areas.
C. Implementation of the Conformity Grace Period
EPA has previously described how the conformity grace period for PM
hot-spot analyses will be implemented.\13\ For PM hot-spot analyses,
project sponsors can continue to conduct qualitative PM hot-spot
analyses for analyses that are started during the grace period (40 CFR
93.111(c)).\14\ Quantitative PM hot-spot analyses can also be completed
for conformity purposes during the grace period, if desired. However,
any quantitative PM hot-spot analyses conducted for conformity purposes
during the grace period, or begun after the end of the grace period,
must use EMFAC2007. The interagency consultation process should be used
if it is unclear if a previous analysis was begun before the end of the
grace period. If you have questions, you can consult the EPA Region 9
person listed in For Further Information Contact, above.
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\13\ See Question 15 in EPA's ``Policy Guidance on the Use of
MOVES2010 for State Implementation Plan Development, and Other
Purposes,'' (EPA-420-B-09-046, December 2009) at: http://www.epa.gov/otaq/models/moves/420b09046.pdf.
\14\ Since previous emissions models have not been approved in
the past for quantitative PM hot-spot analyses, a qualitative PM
analysis is considered ``the previous version of the model'' for the
purposes of 40 CFR 93.111(c).
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D. Availability of EMFAC and Support Materials
Copies of the official version of the EMFAC2007 model are available
on CARB's Web site: http://www.arb.ca.gov/msei/onroad/latest_version.htm. This Web site also contains technical support
documentation for the development of EMFAC2007 as well as other related
documents.
Policy guidance on how to apply the EMFAC model for transportation
conformity purposes can be found on EPA's transportation conformity Web
site at: http://www.epa.gov/otaq/stateresources/transconf/policy.htm.
See Section IV.A for further information on the availability of new
guidance which articulates how to estimate PM project-level emissions
using EMFAC. This guidance applies for EMFAC2007 and future versions of
the EMFAC model unless EPA notes otherwise.
IV. Availability of Modeling Guidance
A. Guidance for Quantitative PM Hot-Spot Analyses
Today's notice also announces the availability of the final
guidance document: ``Transportation Conformity Guidance for
Quantitative Hot-Spot Analyses in PM2.5 and PM10
Nonattainment and Maintenance Areas'' (EPA-420-B-10-040). This
guidance, a fact sheet, and other documentation are available online at
the EPA Web site: http:/www.epa.gov/otaq/stateresources/transconf/
policy.htm. As described in Sections II and III, EPA and DOT will
provide outreach and training for using this guidance.
This guidance describes conformity requirements for quantitative PM
hot-spot analyses; provides technical
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guidance on estimating project emissions using EPA's MOVES model,
California's EMFAC model, and other methods; and outlines how to apply
air quality dispersion models for quantitative PM hot-spot analyses.
The guidance also discusses how to calculate design values for
comparison to each PM NAAQS, as well as how to determine which air
quality modeling receptors may or may not be appropriate for PM hot-
spot analyses.\15\ The guidance also describes how the interagency
consultation process should be used to develop quantitative hot-spot
analyses in PM nonattainment and maintenance areas. In addition, the
guidance includes other resources and examples to assist in conducting
quantitative PM hot-spot modeling analyses. However, the guidance does
not change transportation conformity rule requirements for PM hot-spot
analyses, such as what types of projects are subject to these analyses.
EPA notes that this guidance helps implement existing CAA and
transportation conformity requirements and is not a regulation. In
addition, certain sections of this guidance may be applicable when
completing air quality analyses for transportation projects for
purposes other than transportation conformity. EPA has coordinated with
the DOT in developing this final guidance.
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\15\ EPA stated in the March 2006 final rule that the PM hot-
spot modeling guidance would ``consider how projects of air quality
concern are predicted to impact air quality at existing and
potential PM2.5 monitor locations which are appropriate
to allow the comparison of predicted PM2.5 concentrations
to the current PM2.5 standards, based on PM2.5
monitor siting requirements (40 CFR Part 58).'' (71 FR 12471)
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A draft of this guidance was made available for public comment on
May 26, 2010, with a closing date of July 19, 2010 (75 FR 29537-29538).
EPA received 15 sets of comments on the draft guidance and considered
these comments when developing the final document.
As discussed in Section I, the conformity rule requires EPA to
release guidance on how to conduct quantitative PM hot-spot analyses
prior to announcing that the requirement to conduct such analyses is in
effect (40 CFR 93.123(b)(4)). This regulatory requirement is met with
today's release of this final quantitative PM hot-spot modeling
guidance, as described in this notice. The qualitative PM hot-spot
requirements under 40 CFR 93.123(b)(2) will no longer apply in any
PM2.5 and PM10 nonattainment and maintenance
areas once the grace period is over and quantitative requirements are
in effect. At that time, the 2006 EPA/FHWA qualitative PM hot-spot
guidance will be superseded by EPA's quantitative PM hot-spot guidance
for these analyses.
B. Guidance for Using MOVES in Project-Level CO Analyses
EPA is also releasing today the final guidance document: ``Using
MOVES in Project-Level Carbon Monoxide Analyses'' (EPA-420-B-10-041).
The purpose of this guidance is to describe how to use MOVES to
estimate CO emissions from highway and transit projects in States other
than California. This guidance is available online at the EPA Web site:
http://www.epa.gov/otaq/stateresources/transconf/policy.htm. EPA
coordinated with DOT in developing this guidance.
This guidance can be applied when using MOVES to complete any
quantitative CO project-level analysis, including: CO hot-spot analyses
for transportation conformity determinations, localized SIP modeling,
and CO project-level analyses completed pursuant to the National
Environmental Policy Act. EPA and DOT will provide outreach and
training for using this guidance.
Dated: December 14, 2010.
Margo Tsirigotis Oge,
Director, Office of Transportation and Air Quality.
[FR Doc. 2010-31909 Filed 12-17-10; 8:45 am]
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