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[Federal Register: October 27, 2010 (Volume 75, Number 207)]
[Proposed Rules]               
[Page 66055-66057]
From the Federal Register Online via GPO Access [wais.access.gpo.gov]
[DOCID:fr27oc10-22]                         

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ENVIRONMENTAL PROTECTION AGENCY

40 CFR Parts 51, 52, 72, 78, and 97

[EPA-HQ-OAR-2009-0491; FRL-9217-7]

 
Notice of Data Availability Supporting Federal Implementation 
Plans To Reduce Interstate Transport of Fine Particulate Matter and 
Ozone: Revisions to Emission Inventories

AGENCY: Environmental Protection Agency (EPA).

ACTION: Notice of data availability (NODA).

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SUMMARY: EPA is providing notice that it is supplementing the record 
for the Proposed Transport Rule (75 FR 45210). EPA has placed in the 
docket for the Proposed Transport Rule (Docket ID No. EPA-HQ-OAR-2009-
0491) additional information relevant to the rulemaking, including 
updated emissions inventory data for 2005, 2012 and 2014 for several 
stationary and mobile source inventory components. The data revisions 
reflect new approaches to calculating emissions inventories for 
specific source categories and related new information and models that 
have become available since the emissions data were developed and 
modeled for the proposed rule. EPA is requesting comment on the new 
data provided in the docket and the proposed revisions identified in 
this document. These data and revisions could impact the final rule, 
although such impacts have not yet been quantified by EPA.

DATES: Comments on the NODA must be received on or before November 26, 
2010. Please refer to SUPPLEMENTARY INFORMATION for additional 
information on submitting comments.

ADDRESSES: Submit your comments, identified by Docket ID No. EPA-HQ-
OAR-2009-0491, by one of the following methods:
    http://www.regulations.gov. Follow the on-line 
instructions for submitting comments.
     Fax: (202) 566-9744. Attention Docket ID No. EPA-HQ-OAR-
2009-0941.
     Mail: EPA Docket Center, EPA West (Air Docket), Attention 
Docket ID No. EPA-HQ-OAR-2009-0491, U.S. Environmental Protection 
Agency, Mailcode: 2822T, 1200 Pennsylvania Ave., NW., Washington, DC 
20460. Please include a total of 2 copies.
     Hand Delivery: U.S. Environmental Protection Agency, EPA 
West (Air Docket), 1301 Constitution Avenue, NW., Room 3334, 
Washington, DC 20004, Attention Docket ID No. EPA-HQ-OAR-2009-0491. 
Such deliveries are only accepted during the Docket's normal hours of 
operation, and special arrangements should be made for deliveries of 
boxed information.
    Instructions: Direct your comments to Docket ID No. EPA-HQ-OAR-
2009-0491. EPA's policy is that all comments received will be included 
in the public docket without change and may be made available online at 
http://www.regulations.gov, including any personal information 
provided, unless the comment includes information claimed to be 
Confidential Business Information (CBI) or other information whose 
disclosure is restricted by statute. Do not submit information that you 
consider to be CBI or otherwise protected through http://www.regulations.gov or e-mail. The http://www.regulations.gov Web site 
is an ``anonymous access'' system, which means EPA will not know your 
identity or contact information unless you provide it in the body of 
your comment. If you send an e-mail comment directly to EPA without 
going through http://www.regulations.gov, your e-mail address will be 
automatically captured and included as part of the comment that is 
placed in the public docket and made available on the Internet. If you 
submit an electronic comment, EPA recommends that you include your name 
and other contact information in the body of your comment and with any 
disk or CD-ROM you submit. If EPA cannot read your comment due to 
technical difficulties and cannot contact you for clarification, EPA 
may not be able to consider your comment. Electronic files should avoid 
the use of special characters, any form of encryption, and be free of 
any defects or viruses. For additional information about EPA's public 
docket, visit the EPA Docket Center homepage at http://www.epa.gov/epahome/dockets.htm.
    Docket: All documents in the docket are listed in the http://www.regulations.gov index. Although listed in the index, some 
information is not publicly available, e.g., CBI or other information 
whose disclosure is restricted by statute. Certain other material, such 
as copyrighted material,

[[Page 66056]]

will be publicly available only in hard copy. Publicly available docket 
materials are available either electronically in http://www.regulations.gov or in hard copy at the Air and Radiation Docket and 
Information Center, EPA/DC, EPA East Building, Room 3334, 1301 
Constitution Ave., NW., Washington, DC. The Public Reading Room is open 
from 8:30 a.m. to 4:30 p.m., Monday through Friday, excluding legal 
holidays. The telephone number for the Public Reading Room is (202) 
566-1744, and the telephone number for the Air Docket is (202) 566-
1742.

FOR FURTHER INFORMATION CONTACT: For questions regarding the revised 
future-year emissions data, contact Rich Mason, Air Quality Assessment 
Division, Environmental Protection Agency, C339-02, 109 T.W. Alexander 
Drive, Research Triangle Park, NC 27709; telephone number: (919) 541-
3405; fax number: (919) 541-0684; e-mail address: mason.rich@epa.gov. 
For all other questions on these data, contact Alison Eyth, Air Quality 
Assessment Division, Environmental Protection Agency, C339-02, 109 T.W. 
Alexander Drive, Research Triangle Park, NC 27709; telephone number: 
(919) 541-2478; fax number: (919) 541-0684; e-mail address: 
eyth.alison@epa.gov.

SUPPLEMENTARY INFORMATION: Detailed background information describing 
the proposed rulemaking may be found in a previously published 
document: Federal Implementation Plans to Reduce Interstate Transport 
of Fine Particulate Matter and Ozone (Proposed Transport Rule); 
Proposed Rule (75 FR 45210, August 2, 2010). The information placed in 
the docket is also available for public review on the Web site for the 
Transport Rule at http://www.epa.gov/airtransport/. If additional 
relevant supporting information becomes available in the future, EPA 
will place this information in the docket and make it available for 
public review on this Web site. EPA is requesting comment only on the 
data and revisions explicitly identified in this document. EPA 
requested comment on all aspects of its emissions inventories in the 
proposed Transport Rule. The comment period for that proposal closed on 
October 1, 2010. EPA has not yet reviewed all comments received on the 
proposed Transport Rule and notes that emission inventory data may be 
further revised based on comments received on the proposed Transport 
Rule or on additional information that becomes available before the 
rule is finalized.

I. Additional Information on Submitting Comments

A. How can I help EPA ensure that my comments are reviewed quickly?

    To expedite review of your comments by Agency staff, you are 
encouraged to send a separate copy of your comments, in addition to the 
copy you submit to the official docket, to: Alison Eyth, Air Quality 
Assessment Division, USEPA, C339-02, 109 T.W. Alexander Drive, Research 
Triangle Park, NC 27709; e-mail address: eyth.alison@epa.gov.

B. What should I consider as I prepare my comments for EPA?

    1. Submitting CBI. Do not submit this information to EPA through 
EDOCKET, http://www.regulations.gov, or e-mail. 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 docket office specified in 
the Instructions, 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:
    i. Identify the NODA by docket number and other identifying 
information (subject heading, Federal Register date and page number).
    ii. Follow directions. The Agency may ask you to respond to 
specific questions or organize comments by referencing a Code of 
Federal Regulations (CFR) part or section number.
    iii. Explain your comments, why you agree or disagree; suggest 
alternatives and substitute language for your requested changes.
    iv. Describe any assumptions and provide any technical information 
and/or data that you used.
    v. If you estimate potential costs or burdens, explain how you 
arrived at your estimate in sufficient detail to allow for it to be 
reproduced.
    vi. Provide specific examples to illustrate your concerns, and 
suggest alternatives.
    vii. Explain your views as clearly as possible, avoiding the use of 
profanity or personal threats.
    viii. Make sure to submit your comments by the comment period 
deadline identified.

II. Web Site for Rulemaking Information

    EPA has previously established a Web site for the proposed 
rulemaking at http://www.epa.gov/airtransport. The Web site includes 
the proposed rulemaking actions and other related information that the 
public may find useful in addition to a link to this NODA.

III. New Information Placed in the Docket

    EPA requests comment on the information described below that has 
been added to the proposed Transport Rule docket: EPA-HQ-OAR-2009-0491.
     Revised 2012 and 2014 projected non-electric generating 
units (EGU) emissions for the cement industry, including new units and 
facilities and closures; and for 2014, only expected facility changes 
as provided by the Industrial Sector Integrated Solutions model as 
described by the National Emission Standards for Hazardous Air 
Pollutants From the Portland Cement Manufacturing Industry, and 
Standards of Performance for Portland Cement Plants, September 9, 2010 
(75 FR 54969).
     Revised 2012 and 2014 projected emissions from the non-EGU 
point and nonpoint emissions sectors to reflect emissions reductions 
resulting from the National Emission Standards for Hazardous Air 
Pollutants for Reciprocating Internal Combustion Engines, August 20, 
2010 (75 FR 51570).
     Revised 2012 and 2014 non-EGU point and nonpoint projected 
emissions to reflect controls required by the New York State 
Implementation Plan.
     Revised 2012 and 2014 nonpoint emissions to reflect 
improved information on the oil and gas production sector in Texas and 
Oklahoma.
     Revised spatial surrogate used to allocate county-level 
oil and gas emissions into grid cells for 2005, 2012, and 2014.
     Revised temporal allocation for the nonpoint fugitive dust 
emissions sector.
     Revised allocation of volatile organic compounds to the 
species used by the air quality modeling for headspace vapor associated 
with the nonroad mobile emissions sector.
     Expanded summary spreadsheet for point sources to add 
total particulate matter less than 2.5 microns (PM2.5) 
emissions split into a filterable and condensable portion of 
PM2.5 for each

[[Page 66057]]

facility. This spreadsheet does not include the other changes listed 
above that affect point sources. Documentation is provided in the 
spreadsheet on the location of the data used for computing the 
condensable PM2.5 emissions in the 2005 point inventory.
    Additionally, EPA seeks comment on whether or not to revise 
projected non-EGU emissions inventories for 2014 to reflect sulfur 
dioxide (SO2) and PM2.5 reductions from the 
proposed National Emissions Standards for Hazardous Air Pollutants for 
Major Sources: Industrial, Commercial, and Institutional Boilers and 
Process Heaters (75 FR 32006), hereafter referred to as the ``Major 
Source Boiler Rule.'' The information included in the docket reflects 
reductions that would be expected if the rule were finalized as 
proposed. If the projected reductions associated with the final Major 
Source Boiler Rule were to differ from the projected reductions 
associated with the proposal, EPA would use the projections for the 
final rule if they become available in time for use in EPA's modeling 
for the final Transport Rule.
    In addition, EPA requests comment on the following modified 
approaches to calculating emissions inventories that we intend to use 
in the modeling for the final Transport Rule.
     EPA proposes to use the latest public release of the Motor 
Vehicle Emissions Simulator (MOVES) (http://www.epa.gov/otaq/models/moves/index.htm) to estimate on-road mobile emissions data in 2005, 
2012, and 2014 for all modeled pollutants and emissions processes in 
all States, except California. Future-year vehicle miles traveled will 
be revised from proposal to reflect the latest available data. This 
approach differs from the proposal in the following significant ways: 
(1) EPA will use a newer version of MOVES which has different emissions 
values from the version of MOVES used for the proposal; (2) EPA will 
use MOVES instead of the Mobile Source Emission Factor Model version 
6.2 (MOBILE6) for diesel vehicles and motorcycles; (3) EPA will use 
MOVES instead of MOBILE6 for additional pollutants, including 
SO2, ammonia (NH3), and PM2.5 from 
brake and tire wear; (4) the revised MOVES reflects NH3 
decreases in future years that were not reflected by MOBILE6; and, (5) 
EPA will use actual MOVES runs for 2012 and 2014 rather than scaling 
2005 MOVES emissions. With the exception of these changes, EPA intends 
to continue to apply MOVES using the same approaches described in the 
Emission Inventory Technical Support Document released with the 
Transport Rule proposal (http://www.epa.gov/airquality/transport/pdfs/TR_Proposal_Emissions_TSD.pdf; Section 3.3.1). The revised approach 
will be similar to the approach described in the Technical Support 
Document for the proposed rule in the following key ways: (1) EPA will 
allocate State-total MOVES results to counties by pollutant and process 
using results from MOBILE6 and the National Mobile Inventory Model; and 
(2) EPA will use MOVES defaults rather than State-specific or county-
specific MOVES inputs.
     EPA proposes to use the final projections from 2002 to 
2005, 2012, and 2014 emissions for the category 3 commercial marine 
sector to reflect the final category 3 commercial marine Emissions 
Control Area proposal to the International Maritime Organization (EPA-
420-F-10-041, August 2010).
     EPA proposes to reduce the boundaries used to allocate 
category 3 commercial marine emissions to States from 200 nautical 
miles to reflect State waters (3-10 nautical miles) based on Mineral 
Management Service State-federal boundary data consistent with 
approaches used for the 2005 and 2008 National Emissions Inventories.
     EPA proposes to include the data revisions identified 
above in the final Transport Rule, modified to address any comments 
that EPA receives as part of the transport rulemaking effort. Changes 
in the emissions data could impact the final rulemaking in a number of 
ways including, but not limited to:
    1. Changing base year emissions and emissions projections could 
impact which downwind areas have projected air quality concerns absent 
this rulemaking (i.e., non-attainment or maintenance).
    2. Changing emissions projections could impact EPA assessment of 
which States contribute to those problems.
    Between now and the time that EPA finalizes the Transport Rule, 
additional information used to support the final transport rulemaking 
may be placed in the docket. As noted above, EPA is requesting comment 
only on the data and revisions explicitly identified in this document. 
EPA requested comment on all aspects of its emissions inventories in 
the proposed Transport Rule. The comment period for that proposal 
closed on October 1, 2010. EPA has not yet reviewed all comments 
received on the proposed Transport Rule and notes that emission 
inventory data may be further revised based on comments received on the 
proposed Transport Rule or on additional information that becomes 
available before the rule is finalized.

    Dated: October 20, 2010.
Mary Henigin,
Acting Director, Office of Air Quality Planning and Standards.
[FR Doc. 2010-27171 Filed 10-26-10; 8:45 am]
BILLING CODE 6560-50-P
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