	ENVIRONMENTAL PROTECTION AGENCY

	40 CFR Part 81

	[EPA-R03-OAR-2010-0431; FRL-        ]

Approval of One-Year Extension for Attaining the 1997 8-Hour Ozone
Standard in the Baltimore Moderate Nonattainment Area

AGENCY:  Environmental Protection Agency (EPA).

ACTION:  Proposed rule.

SUMMARY:  EPA is proposing to extend the attainment date from June 15,
2010 to June 15, 2011 for the Baltimore nonattainment area, which is
classified as moderate for the 1997 8-hour ozone national ambient air
quality standard (NAAQS).  This extension is based in part on air
quality data for the 4th highest daily 8-hour monitored value during the
2009 ozone season.  In the Final Rules section of this Federal Register,
EPA is approving the State's request as a direct final rule without
prior proposal because the Agency views this as a noncontroversial
request 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will be withdrawn and all public comments received will be addressed in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-2010-0431 by one of the following methods:

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

B.    E-mail:    HYPERLINK "mailto:fernandez.cristina@epa.gov" 
fernandez.cristina@epa.gov .

C.    Mail:  EPA-R03-OAR-2010-0431, Cristina Fernandez, Associate
Director, Office of Air Program Planning, Mailcode 3AP30, 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-2010-0431.  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 Maryland Department of the Environment, 1800 Washington
Boulevard, Suite 705, Baltimore, Maryland 21230.

FOR FURTHER INFORMATION CONTACT:  Gregory Becoat, (215) 814-2036, or by
e-mail at becoat.gregory@epa.gov.

SUPPLEMENTARY INFORMATION:  

For further information, 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.  

__July 6, 2010________                   		         
___________/s/_____________

Dated:                                				W. C. Early, Acting

                                      				Regional Administrator,

                                      				Region III.

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