[Federal Register Volume 72, Number 112 (Tuesday, June 12, 2007)]
[Notices]
[Page 32295]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: E7-11331]


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ENVIRONMENTAL PROTECTION AGENCY

[EPA-R09-OAR-2007-0393; FRL-8326-5]


Adequacy Status of Motor Vehicle Budgets in Submitted Yuma 
PM10 Maintenance Plan for Transportation Conformity 
Purposes; Arizona

AGENCY: Environmental Protection Agency (EPA).

ACTION: Notice of adequacy.

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SUMMARY: In this notice, EPA is notifying the public that the Agency 
has found that the motor vehicle emissions budgets for PM10 
in the Yuma PM10 Maintenance Plan are adequate for 
transportation conformity purposes. The Yuma PM10 
Maintenance Plan was submitted to EPA on August 17, 2006 by the Arizona 
Department of Environmental Quality as a revision to the Arizona state 
implementation plan (SIP). As a result of our finding, the Yuma 
Metropolitan Planning Organization and the Federal Highway 
Administration must use the motor vehicle emissions budgets from the 
submitted Yuma PM10 Maintenance Plan for future conformity 
determinations.

DATES: This finding is effective June 27, 2007.

FOR FURTHER INFORMATION CONTACT: Rebecca Rosen, U.S. EPA, Region IX, 
Air Division AIR-2, 75 Hawthorne Street, San Francisco, CA 94105-3901; 
(415) 947-4152 or [email protected].

SUPPLEMENTARY INFORMATION: Throughout this document, whenever ``we,'' 
``us,'' or ``our'' is used, we mean EPA.
    Today's notice is simply an announcement of a finding that we have 
already made. EPA Region IX sent a letter to Arizona Department of 
Environmental Quality on June 1, 2007 stating that the motor vehicle 
emissions budgets in the submitted Yuma PM10 Maintenance 
Plan for 1999, 2005 and 2016 are adequate. The finding is available at 
EPA's conformity Web site: http://www.epa.gov/otaq/stateresources/transconf/adequacy.htm. The adequate motor vehicle emissions budgets 
are provided in the following table:

                Adequate Motor Vehicle Emissions Budgets
------------------------------------------------------------------------
                                                              PM10--tons
                        Budget year                            per year
                                                                (tpy)
------------------------------------------------------------------------
1999.......................................................       12,914
2005.......................................................       12,169
2016.......................................................       10,803
------------------------------------------------------------------------

    Transportation conformity is required by Clean Air Act section 
176(c). EPA's conformity rule requires that transportation plans, 
transportation improvement programs, and projects conform to state air 
quality implementation plans (SIPs) and establishes the criteria and 
procedures for determining whether or not they do. Conformity to a 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 in making 
our adequacy determination. Please note that an adequacy review is 
separate from EPA's completeness review, and should not be used to 
prejudge EPA's ultimate approval action for the SIP. Even if we find a 
budget adequate, the SIP could later be disapproved.

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

    Dated: May 30, 2007.
Wayne Nastri,
Regional Administrator, Region IX.
[FR Doc. E7-11331 Filed 6-11-07; 8:45 am]
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