[Federal Register Volume 72, Number 63 (Tuesday, April 3, 2007)]
[Notices]
[Page 15879]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: E7-6148]


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ENVIRONMENTAL PROTECTION AGENCY

[OH-164-1; FRL-8294-5]


Adequacy Status of the Dayton-Springfield, OH, Submitted 8-Hour 
Ozone Redesignation and Maintenance Plan for Transportation Conformity 
Purposes

AGENCY: Environmental Protection Agency (EPA).

ACTION: Notice of adequacy.

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SUMMARY: In this notice, EPA is notifying the public that we have found 
that the motor vehicle emissions budgets (MVEBs) for 8-hour ozone in 
Dayton-Springfield (Clark, Greene, Miami, and Montgomery Counties), 
Ohio-which were submitted as part of a redesignation request and 
maintenance plan for this area-are adequate for conformity purposes. As 
a result of our finding, Dayton-Springfield must use the MVEBs from the 
submitted 8-hour ozone redesignation and maintenance plan for future 
conformity determinations.

DATES: This finding is effective April 18, 2007.

FOR FURTHER INFORMATION CONTACT: Anthony Maietta, Life Scientist, 
Criteria Pollutant Section (AR-18J), Air Programs Branch, Air and 
Radiation Division, United States Environmental Protection Agency, 
Region 5, 77 West Jackson Boulevard, Chicago, Illinois 60604, (312) 
353-8777, [email protected].

SUPPLEMENTARY INFORMATION: Throughout this document, whenever ``we'', 
``us'' or ``our'' is used, we mean EPA.

Background

    Today's action is simply an announcement of a finding that we have 
already made. EPA Region 5 sent a letter to the Ohio Environmental 
Protection Agency on February 9, 2007, stating that the 2005 and 2018 
MVEBs in the Dayton-Springfield area are adequate. Ohio submitted the 
budgets as part of the 8-hour ozone redesignation request and 
maintenance plan for this area. This submittal was announced on EPA's 
conformity Web site, and received no comments: http://www.epa.gov/otaq/stateresources/transconf/adequacy.htm, (once there, click on ``What SIP 
submissions are currently under EPA adequacy review?'').
    The 2005 and 2018 MVEBs, in tons per day (tpd), for volatile 
organic compounds (VOC) and oxides of nitrogen (NOX) for 
Dayton-Springfield are as follows:

------------------------------------------------------------------------
                                                 2005 MVEB    2018 MVEB
                                                   (tpd)        (tpd)
------------------------------------------------------------------------
VOC...........................................        29.19        14.73
NOX...........................................        63.88        21.42
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    Transportation conformity is required by section 176(c) of the 
Clean Air Act. EPA's conformity rule requires that transportation 
plans, programs, and projects conform to state air quality 
implementation plans and establishes the criteria and procedures for 
determining whether or not they do. Conformity to a State 
Implementation Plan (SIP) means that transportation activities will not 
produce new air quality violations, worsen existing violations, or 
delay timely attainment of the national ambient air quality standards.
    The criteria by which we determine whether a SIP's motor vehicle 
emission budgets are adequate for conformity purposes are outlined in 
40 CFR 93.118(e)(4). We have described our process for determining the 
adequacy of submitted SIP budgets in our July 1, 2004, preamble 
starting at 69 FR 40038, and we used the information in these resources 
while making our adequacy determination. Please note that an adequacy 
review is separate from EPA's completeness review, and it also should 
not be used to prejudge EPA's ultimate approval of the SIP. Even if we 
find a budget adequate, the SIP could later be disapproved.
    The finding and the response to comments are available at EPA's 
conformity Web site: http://www.epa.gov/otaq/stateresources/transconf/adequacy.htm.

    Authority: 42 U.S.C. 7401-7671q.

    Dated: March 21, 2007.
Gary Gulezian,
Acting Regional Administrator, Region 5.
 [FR Doc. E7-6148 Filed 4-2-07; 8:45 am]
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