2015-10241. Approval and Promulgation of Implementation Plans; Arkansas; Regional Haze and Interstate Visibility Transport Federal Implementation Plan; Extension of Comment Period and Notice of Availability

AGENCY:

Environmental Protection Agency (EPA).

ACTION:

Proposed rule; extension of comment period; availability of supplemental information.

SUMMARY:

The Environmental Protection Agency (EPA) is extending the comment period for a proposed rule to establish a Clean Air Act (CAA) Federal Implementation Plan (FIP) to address regional haze and visibility transport requirements for the State of Arkansas. EPA is extending the public comment period until July 15, 2015. The extension also is to allow comments on EPA supplemental modeling for the Entergy Independence plant.

DATES:

The comment period for the proposed rule published April 8, 2015 (80 FR 18944), is extended. Written comments must be received on or before July 15, 2015.

ADDRESSES:

Submit your comments, identified by Docket No. EPA-R06-OAR-2015-0189, by one of the following methods:

• Federal e-Rulemaking Portal: http://www.regulations.gov. Follow the online instructions for submitting comments.
• Email: [e-mail].
• Mail: Guy Donaldson, Chief, Air Planning Section (6PD-L), Environmental Protection Agency, 1445 Ross Avenue, Suite 1200, Dallas, Texas 75202-2733.
• Hand or Courier Delivery: Guy Donaldson at the address above. Such deliveries are accepted only between the hours of 8 a.m. and 4 p.m. weekdays, and not on legal holidays. Special arrangements should be made for deliveries of boxed information.
• Fax: Guy Donaldson at [phone].

Instructions: Direct your comments to Docket No. EPA-R06-OAR-2015-0189. Our 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 email. The www.regulations.gov Web site is an “anonymous access” system, which means we will not know your identity or contact information unless you provide it in the body of your comment. If you send an email comment directly to us without going through www.regulations.gov your email 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, we recommend 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 we cannot read your comment due to technical difficulties and cannot contact you for clarification, we 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: The index to the docket for this action is available electronically at www.regulations.gov and in hard copy at EPA Region 6, 1445 Ross Avenue, Suite 700, Dallas, Texas. 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).

FOR FURTHER INFORMATION CONTACT:

Dayana Medina, [phone]; [e-mail]. To inspect the hard copy materials, please schedule an appointment with Ms. Medina.

SUPPLEMENTARY INFORMATION:

On April 8, 2015, we published in the Federal Register a proposal to establish a FIP for the State of Arkansas addressing regional haze and visibility transport (80 FR 18944). The proposed FIP includes emission limits for sources. Comments on the proposed rule were required to be received by May 16, 2015. We are extending the comment period until July 15, 2015. This action will allow interested persons additional time to prepare and submit comments.

We are also announcing the availability in the docket of supplemental modeling performed by EPA since the proposed rule for the Entergy Independence plant. Below is a summary of the supplemental modeling performed by EPA.

Summary of Supplemental Regional Haze Modeling for the Entergy Independence Plant

Class I area	Visibility improvement over baseline (deciviews)	Visibility improvement of low NOX burners/separated overfire air over baseline (deciviews)
	Dry flue gas desulfurization	Low NOX burner
Caney Creek	1.096	0.459
Upper Buffalo	1.178	0.198
Hercules-Glades	1.056	0.173
Mingo	1.045	0.148

List of Subjects in 40 CFR Part 52

• Environmental protection
• Air pollution control
• Best available control technology
• Incorporation by reference
• Intergovernmental relations
• Interstate transport of pollution
• Nitrogen dioxide
• Ozone
• Particulate matter
• Regional haze
• Reporting and recordkeeping requirements
• Sulfur dioxides
• Visibility

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

Dated: April 23, 2015.

Wren Stenger,

Multimedia Planning and Permitting Division Director, Region 6.