[Federal Register Volume 78, Number 34 (Wednesday, February 20, 2013)]
[Proposed Rules]
[Pages 11808-11809]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2013-03764]


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ENVIRONMENTAL PROTECTION AGENCY

40 CFR Part 52

[EPA-R04-OAR-2012-0762; FRL-9781-9]


Approval and Promulgation of Implementation Plans; Tennessee: 
Approve Knox County Supplemental Motor Vehicle Emissions Budget Update

AGENCY: Environmental Protection Agency (EPA).

ACTION: Proposed rule.

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SUMMARY: EPA is proposing to approve a revision to the Tennessee State 
Implementation Plan (SIP), submitted to EPA on December 13, 2012, by 
the State of Tennessee, through the Tennessee Department of Environment 
and Conservation. Tennessee's December 13, 2012, SIP revision includes 
changes to the maintenance plan for the Knox County 1-hour ozone area 
submitted on August 26, 1992, and approved by EPA on September 27, 
1993, and a subsequent SIP revision approved by EPA on August 5, 1997. 
The Knox County 1-hour ozone area was comprised of Knox County in its 
entirety. The December 13, 2012, SIP revision proposes to increase the 
safety margin allocated to motor vehicle emissions budgets for nitrogen 
oxides and volatile organic compounds for Knox County to account for 
changes in the emissions model and vehicle miles traveled projection 
model. EPA is approving this SIP revision because the State has 
demonstrated that it is consistent with the Clean Air Act.

DATES: Written comments must be received on or before March 22, 2013.

ADDRESSES: Submit your comments, identified by Docket ID No. EPA-R04-
OAR-2012-0762 by one of the following methods:
    1. www.regulations.gov: Follow the on-line instructions for 
submitting comments.
    2. Email: [email protected].
    3. Fax: (404) 562-9019.
    4. Mail: ``EPA-R04-OAR-2013-0762,'' Regulatory Development Section, 
Air Planning Branch, Air, Pesticides and Toxics Management Division, 
U.S. Environmental Protection Agency, Region 4, 61 Forsyth Street SW., 
Atlanta, Georgia 30303-8960.
    5. Hand Delivery or Courier: Lynorae Benjamin, Regulatory 
Development Section, Air Planning Branch, Air, Pesticides and Toxics 
Management Division, U.S. Environmental Protection Agency, Region 4, 61 
Forsyth Street SW., Atlanta, Georgia 30303-8960. Such deliveries are 
only accepted during the Regional Office's normal hours of operation. 
The Regional Office's official hours of business are Monday through 
Friday, 8:30 to 4:30, excluding federal holidays.
    Please see the direct final rule which is located in the Rules 
section of this Federal Register for detailed instructions on how to 
submit comments.

FOR FURTHER INFORMATION CONTACT: Kelly Sheckler, Air Quality Modeling 
and Transportation Section, Air Planning Branch, Air, Pesticides and 
Toxics Management Division, U.S. Environmental Protection Agency, 
Region 4, 61 Forsyth Street SW., Atlanta, Georgia 30303-8960. Kelly 
Sheckler may be reached by phone at (404) 562-9222 or by electronic 
mail address [email protected].

SUPPLEMENTARY INFORMATION: On December 18, 2012, EPA proposed to 
approve, through parallel processing, a draft revision to the Tennessee 
SIP. EPA explained in that notice that if the State's final submission 
was changed, EPA will evaluate those changes and if necessary and 
appropriate, issue another notice of proposed rulemaking. Tennessee's 
final submittal was different from its draft submittal and as a result, 
EPA is now taking direct final action and this proposed action to 
approve Tennessee's final submittal dated December 13, 2012. Today's 
actions replace and supercede EPA's previous December 18, 2012, 
proposal action.
    Additionally, on March 12, 2008, EPA issued a revised ozone 
National Ambient Air Quality Standards (NAAQS). See 73 FR 16436. The 
current action, however, is being taken to address requirements under 
the 1997 8-hour ozone NAAQS.
    For additional information regarding today's action see the direct 
final rule which is published in the Rules Section of this Federal 
Register. Through that direct final rule, EPA is approving the State's 
implementation plan revision without prior proposal because the Agency 
views this as a noncontroversial submittal and anticipates no adverse 
comments. A detailed rationale for the approval is set forth in the 
direct final rule. If no adverse comments are received in response to 
this rule, no further activity is contemplated. If EPA receives adverse 
comments, the direct final rule will be withdrawn and all public 
comments received will be addressed in a subsequent final rule based on 
this proposed rule. EPA will not institute a second comment period on 
this document. Any parties

[[Page 11809]]

interested in commenting on this document should do so at this time.

    Dated: February 7, 2013.
A. Stanley Meiburg,
Acting Regional Administrator, Region 4.
[FR Doc. 2013-03764 Filed 2-19-13; 8:45 am]
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