Document ID: EPA-R09-OAR-2013-0009-0111
Agency: epa
Document Type: Proposed Rule
Title: State Implementation Plans; Approvals and Promulgations: Navajo Nation; Regional Haze Requirements for Navajo Generating Station
Posted Date: 2013-07-08T04:00Z

[Federal Register Volume 78, Number 131 (Tuesday, July 9, 2013)]
[Proposed Rules]
[Pages 41012-41013]
From the Federal Register Online via the Government Printing Office [www.gpo.gov]
[FR Doc No: 2013-16491]

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ENVIRONMENTAL PROTECTION AGENCY

40 CFR Part 49

[EPA-R09-OAR-2013-0009; FRL-9832-2]

Approval of Air Quality Implementation Plans; Navajo Nation; 
Regional Haze Requirements for Navajo Generating Station; Extension of 
Public Comment Period

AGENCY: Environmental Protection Agency (EPA).

ACTION: Proposed rule; notice of extended comment period.

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SUMMARY: On February 5, 2013, EPA proposed a Best Available Retrofit 
Technology (BART) determination for oxides of nitrogen (NOX) 
for the Navajo Generating Station (NGS), located on the Navajo Nation, 
and provided a 3-month period for public comments, to close on May 6, 
2013. The Navajo Nation, Gila River Indian Community, and other 
affected stakeholders requested a 90-day extension of the comment 
period to allow time for stakeholders to develop an alternative to 
EPA's proposed BART determination that achieves greater reasonable 
progress. On March 19, 2013, EPA extended the close of the public 
comment period to August 5, 2013. On June 10, 2013, EPA signed a 
notice, published in the Federal Register on June 19, 2013, of our 
intent to hold five public hearings in the state of Arizona. On June 
20, 2013, Salt River Project (SRP), the operator and co-owner of NGS, 
submitted a letter on behalf of six stakeholders, including the Navajo 
Nation and Gila River Indian Community, describing the development of a 
stakeholder alternative, and requesting another extension of the 
comment period to allow the stakeholders additional time to finalize 
their alternative and submit it to EPA for consideration in the 
rulemaking process. EPA is extending the comment period for this 
proposed rulemaking by 60 days to October 4, 2013.

DATES: The comment period for the proposed rule published February 5, 
2013, at 78 FR 8274, extended March 19, 2013, at 78 FR 16825, is 
further extended. Comments on the proposed BART determination for NGS 
must be postmarked no later than October 4, 2013.

ADDRESSES: Submit comments, identified by docket number EPA-R09-OAR-
2013-0009, by one of the following methods:
    (1) Federal eRulemaking Portal: www.regulations.gov. Follow the on-
line instructions.
    (2) Email: r9ngsbart@epa.gov.
    (3) Mail or deliver: Anita Lee (Air-2), U.S. Environmental 
Protection Agency Region 9, 75 Hawthorne Street, San Francisco, CA 
94105-3901.
    For more detailed instructions concerning how to submit comments on 
this proposed rule, and for more information on our proposed rule, 
please see the notice of proposed rulemaking, published in the Federal 
Register on February 5, 2013 (78 FR 8274).
    Instructions: All comments 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 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 www.regulations.gov or email. 
www.regulations.gov 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 email directly to EPA, your email 
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.
    Hearings: EPA intends to schedule five public hearings to accept 
oral and written comments on the proposed rulemaking. EPA intends to 
hold the public hearings at locations on the Navajo Nation and the Hopi 
Tribe, as well as in Page, Phoenix, and Tucson, Arizona. EPA will 
provide notice and additional details related to the hearings in the 
Federal Register, on our Web site, and in the docket for this proposed 
rulemaking.
    Docket: The index to the docket for this action is available 
electronically at www.regulations.gov and in hard copy at EPA Region 9, 
75 Hawthorne Street, San Francisco, California. While documents in the 
docket are listed in the index, some information may be publicly 
available only at EPA Region 9 (e.g., maps, voluminous reports, 
copyrighted material), and some may not be publicly available in 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.

FOR FURTHER INFORMATION CONTACT: Anita Lee, EPA Region 9, (415) 972-
3958, r9ngsbart@epa.gov.

SUPPLEMENTARY INFORMATION: Throughout this document, ``we'', ``us'', 
and ``our'' refer to EPA.

Table of Contents

I. Background
II. Today's Action

I. Background

    NGS is a coal-fired power plant located on the Navajo Nation Indian 
Reservation, just east of Page, Arizona, approximately 135 miles north 
of Flagstaff, Arizona. Emissions of NOX from NGS affect 
visibility at 11 National Parks and Wilderness Areas that are 
designated as Class I federal areas, mandated by Congress to receive 
heightened protection. NGS is subject to the BART requirement of the 
CAA and the Regional Haze Rule based on its age

[[Page 41013]]

and its effects on visibility in Class I areas.
    On February 5, 2013, EPA proposed a BART determination to require 
NGS to achieve a nearly 80 percent reduction of its current overall 
NOX emission rate. EPA also proposed an alternative to BART 
that would provide flexibility to NGS in the schedule for the 
installation of new post-combustion control equipment. EPA's proposed 
alternative to BART credits NGS for its early and voluntary 
installation of new combustion controls to reduce NOX 
emissions beginning in 2009. EPA, therefore, proposed to find that this 
alternative achieves greater reasonable progress than BART.
    In recognition that there may be other approaches that could result 
in equivalent or better visibility benefits than BART, as well as the 
singular importance of NGS to the Navajo Nation, Hopi Tribe, the Gila 
River Indian Community, and numerous other tribes located in Arizona, 
EPA also outlined a framework for evaluating other alternatives to 
provide greater flexibility than EPA's proposed alternative to BART.
    EPA encouraged a robust public discussion of our proposed BART 
determination and alternative, as well as other possible alternatives, 
and recognized the potential need for a supplemental proposal if other 
approaches developed by other parties are identified as meeting the 
needs of stakeholders and meeting the requirements of the CAA.
    EPA received requests for a 90-day extension of the public comment 
period from the Navajo Nation, the Gila River Indian Community, and 
other stakeholders, in order to allow stakeholders time to develop 
alternatives to BART for EPA's consideration. On March 19, 2013, EPA 
extended the close of the public comment period to August 5, 2013 (78 
FR 16825). EPA recognized that the stakeholder process, to develop 
viable alternatives to BART that provide additional flexibility to the 
owners of NGS while achieving more emission reductions to assure 
greater reasonable progress than BART, would require a significant 
amount of time. EPA also recognized the critical importance of active 
participation by affected tribes located in Arizona in the development 
of alternatives to BART.
    On June 10, 2013, EPA signed a notice, published on June 19, 2013, 
of our intent to hold five public hearings throughout the state of 
Arizona (78 FR 36716). EPA intends to hold hearings at one location 
each on reservation lands of the Navajo Nation and Hopi Tribe, and in 
Page, Phoenix, and Tucson, Arizona.
    On June 20, 2013, SRP submitted a letter, on behalf of six 
stakeholders, requesting another extension of the comment period for 
NGS.\1\ SRP describes working over the past several months with 
representatives from the Central Arizona Water Conservation District, 
the Environmental Defense Fund, the Gila River Indian Community, the 
Navajo Nation Environmental Protection Agency, and the U.S. Department 
of the Interior to develop a BART alternative. SRP states that although 
significant progress has been made on the development of an 
alternative, additional time is needed to finalize their alternative 
and submit it to EPA for consideration in the rulemaking process.
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    \1\ See letter dated June 20, 2013 from Kelly J. Barr, SRP, to 
Jared Blumenfeld, EPA, re: Request for Extension of the Public 
Comment Period, Proposed Rule--Regional Haze Requirements for Navajo 
Generating Station Docket No. EPA-R09-OAR-2013-0009.
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II. Today's Action

    In today's action, EPA is extending the comment period for our 
proposed BART determination for NGS by 60 days, to October 4, 2013. EPA 
is granting a 60-day extension to allow time for the stakeholders to 
finalize their alternative and submit it to EPA for consideration in 
the rulemaking process.

List of Subjects in 40 CFR Part 49

    Environmental protection, Air pollution control, Indians, 
Intergovernmental relations, Nitrogen dioxide.

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

    Dated: June 26, 2013.
Deborah Jordan,
Air Division Director, Region 9.
[FR Doc. 2013-16491 Filed 7-8-13; 8:45 am]
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