	ENVIRONMENTAL PROTECTION AGENCY

	40 CFR Part 52

	[EPA-R03-OAR-2007-0511; FRL-       ]

Approval and Promulgation of Air Quality Implementation Plans;
Pennsylvania; 

Carbon Monoxide Maintenance Plan Update; Limited Maintenance Plan 

in Philadelphia County 

AGENCY:  Environmental Protection Agency (EPA).

ACTION:  Proposed rule.

SUMMARY:  EPA proposes to approve the State Implementation Plan (SIP)
revision submitted by the State of Pennsylvania for the purpose of
establishing a limited maintenance plan for carbon monoxide in
Philadelphia County for the maintenance period of 2007-2017.  In the
Final Rules section of this Federal Register, EPA is approving the
State's SIP submittal as a direct final rule 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 action, 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will be withdrawn and all public comments received will be addressed in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.  Any parties interested in commenting
on this action should do so at this time. 

DATES:  Comments must be received in writing by [insert date 30 days
from date of publication].   	

ADDRESSES:  Submit your comments, identified by Docket ID Number 

EPA-R03-OAR-2007-0511 by one of the following methods:

A.  www.regulations.gov.  Follow the on-line instructions for submitting
comments.

     	B.  E-mail:  powers.marilyn@epa.gov

     	C.  Mail:  EPA-R03-OAR-2007-0511, Marilyn Powers, Acting Chief,
Air Quality Planning Branch, Mailcode 3AP21, U.S. Environmental
Protection Agency, Region III, 1650 Arch Street, Philadelphia,
Pennsylvania 19103.

     	D.   Hand Delivery: At the previously-listed EPA Region III
address.  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-R03-OAR-2007-0511.  EPA's policy is that all comments received will
be included in the public docket without change, and may be made
available online at 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 www.regulations.gov or
e-mail.  The www.regulations.gov website 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 
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.

Docket:  All documents in the electronic docket are listed in the
www.regulations.gov index. Although listed in the index, some
information is not publicly available, i.e., CBI or other information
whose disclosure is restricted by statute.  Certain other material, such
as copyrighted material, is not placed on the Internet and will be
publicly available only in hard copy form.  Publicly available docket
materials are available either electronically in www.regulations.gov or
in hard copy during normal business hours at the Air Protection
Division, U.S. Environmental Protection Agency, Region III, 1650 Arch
Street, Philadelphia, Pennsylvania 19103. Copies of the State submittal
are available at the Pennsylvania Department of Environmental Resources
Bureau of Air Quality Control, P.O. Box 8468, 400 Market Street,
Harrisburg, Pennsylvania 17105; and the Department of Public Health, Air
Management Services, 321 University Avenue, Philadelphia, Pennsylvania
19104.

FOR FURTHER INFORMATION CONTACT: Catherine L. Magliocchetti, (215)
814-2174, or by e-mail at magliocchetti.catherine@epa.gov.  

SUPPLEMENTARY INFORMATION:  

For further information regarding this SIP revision submitted by the
State of Pennsylvania for the purpose of establishing a limited
maintenance plan for carbon monoxide in Philadelphia County for the
maintenance period of 2007-2017, please see the information provided in
the direct final action, with the same title, that is located in the
(Rules and Regulations( section of this Federal Register publication. 

                                                                        
                             /s/

---------------                                                   		
___________________     

Dated:	 September 14, 2007              			Donald S. Welsh,

                                          				Regional Administrator,

                                          				Region III. 

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