Jared Blumenfeld, Regional Administrator, EPA Region 9 signed the following 

proposed rule on October 17, 2012, and EPA is submitting it for publication 

in the Federal Register (FR). While we have taken steps to ensure the 

accuracy of this Internet version of the proposed rule, it is not the 

official version of the proposed rule for purposes of public comment. Please 

refer to the official version in a forthcoming FR publication, which will 

appear on the Government Printing Office's FDsys website 

(http://fdsys.gpo.gov/fdsys/search/home.action) and on Regulations.gov 

(http://www.regulations.gov) in Docket No. EPA-R09-OAR-2012-721.

6560-50-P

ENVIRONMENTAL PROTECTION AGENCY

40 CFR Part 52

[EPA-R09-OAR-2012-0721; FRL - ]

Finding of Substantial Inadequacy of Implementation Plan; Call 

for California State Implementation Plan Revision; South Coast; 

Reopening of Comment Period

AGENCY: Environmental Protection Agency (EPA).

ACTION: Proposed rule; reopening of comment period.

----------------------------------------------------------------

SUMMARY: EPA is reopening the public comment period for a 

proposal published in the Federal Register on September 19, 

2012. In that action, in response to a remand by the Ninth 

Circuit Court of Appeals, and pursuant to the Clean Air Act, EPA 

proposed to find that the California State Implementation Plan 

(SIP) for the Los Angeles-South Coast Air Basin (South Coast) is 

substantially inadequate to comply with the obligation to adopt 

and implement a plan providing for attainment of the 1-hour 

ozone standard. If EPA finalizes this proposed finding of 

substantial inadequacy as proposed, California would be required 

revise its SIP to correct these deficiencies within 12 months of 

the effective date of our final rule. Two commentors requested 
2

This document is a prepublication version, signed by Jared Blumenfeld, 

Regional Administrator, EPA Region 9 on October 17, 2012. We have taken steps 

to ensure the accuracy of this version, but it is not the official version.

an extension of the comment period for this proposed rulemaking. 

EPA is now reopening the public comment period.

DATES: The comment period for the proposed rule published on 

September 19, 2012 (77 FR 58072) is reopened. Comments must be 

received on or before [INSERT DATE 14 DAYS FROM DATE OF 

PUBLICATION IN FEDERAL REGISTER].

ADDRESSES: Submit comments, identified by docket number EPAR09-OAR-2012-0721, by one of the following methods:

 Federal eRulemaking Portal: http://www.regulations.gov. 

Follow the on-line instructions for submitting comments.

 E-mail: tax.wienke@epa.gov.

 Mail or deliver: Wienke Tax, Air Planning Office, U.S. 

Environmental Protection Agency, Region 9, Mailcode AIR-2, 

75 Hawthorne Street, San Francisco, California 94105-3901.

Instructions: All comments will be included in the public 

docket without change and may be made available online at 

http://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. Information that you 

consider CBI or otherwise protected should be clearly identified 

as such and should not be submitted through 
3

This document is a prepublication version, signed by Jared Blumenfeld, 

Regional Administrator, EPA Region 9 on October 17, 2012. We have taken steps 

to ensure the accuracy of this version, but it is not the official version.

http://www.regulations.gov or e-mail. The 

http://www.regulations.gov Web site is an “anonymous access” 

system, and 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, your e-mail 

address will be automatically captured and included as part of 

the public comment. 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.

Docket: The index to the docket for this action is 

available electronically on the http://www.regulations.gov Web 

site and in hard copy at EPA Region IX, 75 Hawthorne Street, San 

Francisco, California, 94105. While all documents in the docket 

are listed in the index, some information may be publicly 

available only at the hard copy location (e.g., copyrighted 

material), and some may not be publicly available at either 

location (e.g., CBI). To inspect the hard copy materials, please 

schedule an appointment during normal business hours with the 

contact listed in the FOR FURTHER INFORMATION CONTACT section 

below.

FOR FURTHER INFORMATION CONTACT: Wienke Tax, Air Planning 

Office, U.S. Environmental Protection Agency, Region 9, Mail 
4

This document is a prepublication version, signed by Jared Blumenfeld, 

Regional Administrator, EPA Region 9 on October 17, 2012. We have taken steps 

to ensure the accuracy of this version, but it is not the official version.

Code AIR-2, 75 Hawthorne Street, San Francisco, California 

94105-3901, 415-947-4192, tax.wienke@epa.gov.

SUPPLEMENTARY INFORMATION: 

EPA published a proposed rule on September 19, 2012 (77 FR 

58072). In that action, in response to a remand by the Ninth 

Circuit Court of Appeals, and pursuant to the Clean Air Act, EPA 

proposed to find that the California State Implementation Plan 

(SIP) for the Los Angeles-South Coast Air Basin (South Coast) is 

substantially inadequate to comply with the obligation to adopt 

and implement a plan providing for attainment of the 1-hour 

ozone standard. If the action is finalized as proposed,

California would be required revise its SIP to correct these 

deficiencies within 12 months of the effective date of our final 

rule. Written comments on the proposed rule were to be submitted 

to EPA on or before October 19, 2012. Two commentors requested 

an extension of the comment period for this proposed rulemaking. 

EPA is now reopening the public comment period for the September 

19, 2012, 1-hour ozone SIP call for California for the South 

Coast area proposed rulemaking for fourteen days.

_____October 17, 2012___ _/s/ Jared Blumenfeld____

Dated: Jared Blumenfeld,

Regional Administrator,

EPA Region 9.