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[Federal Register Volume 82, Number 5 (Monday, January 9, 2017)]
[Proposed Rules]
[Page 2308]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2016-31636]

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ENVIRONMENTAL PROTECTION AGENCY

40 CFR Parts 52 and 81

[EPA-R09-OAR-2016-0287; FRL-9957-63-Region 9]

Approval of Arizona Air Plan Revisions; Ajo and Morenci, Arizona; 
Second 10-Year Sulfur Dioxide Maintenance Plans and Technical 
Correction

AGENCY: Environmental Protection Agency (EPA).

ACTION: Proposed rule.

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SUMMARY: The Environmental Protection Agency (EPA) is proposing to 
approve the second ten-year maintenance plans for the Ajo and Morenci 
areas in Arizona for the 1971 National Ambient Air Quality Standards 
(NAAQS) for sulfur dioxide (SO2), and to correct an error in 
the description of the Ajo, Arizona SO2 maintenance area in 
the Code of Federal Regulations.

DATES: Any comments on this proposal must arrive by February 8, 2017.

ADDRESSES: Submit your comments, identified by Docket ID No. EPA-R09-
OAR-2016-0287 at http://www.regulations.gov, or via email to Wienke 
Tax, at tax.wienke@epa.gov. For comments submitted at Regulations.gov, 
follow the online instructions for submitting comments. Once submitted, 
comments cannot be removed or edited from Regulations.gov. For either 
manner of submission, the EPA may publish any comment received to its 
public docket. Do not submit electronically any information you 
consider to be Confidential Business Information (CBI) or other 
information whose disclosure is restricted by statute. Multimedia 
submissions (audio, video, etc.) must be accompanied by a written 
comment. The written comment is considered the official comment and 
should include discussion of all points you wish to make. The EPA will 
generally not consider comments or comment contents located outside of 
the primary submission (i.e., on the web, cloud, or other file sharing 
system). For additional submission methods, please contact the person 
identified in the FOR FURTHER INFORMATION CONTACT section. For the full 
EPA public comment policy, information about CBI or multimedia 
submissions, and general guidance on making effective comments, please 
visit http://www2.epa.gov/dockets/commenting-epa-dockets.

FOR FURTHER INFORMATION CONTACT: Wienke Tax, EPA Region IX, (415) 947-
4192, tax.wienke@epa.gov.

SUPPLEMENTARY INFORMATION: Throughout this document, ``we,'' ``us'' and 
``our'' refer to the EPA. This proposal addresses the second ten-year 
maintenance plans submitted by the Arizona Department of Environmental 
Quality to address the 1971 SO2 NAAQS in the Ajo and Morenci 
maintenance areas, AZ. In the Rules and Regulations section of this 
Federal Register, we are approving these second ten-year maintenance 
plans in a direct final action without prior proposal because we 
believe these SIP revisions are not controversial. If we receive 
adverse comments, however, we will publish a timely withdrawal of the 
direct final rule and address the comments in subsequent action based 
on this proposed rule. If we receive adverse comment on a distinct 
provision of this rulemaking, i.e., our action regarding only one 
maintenance plan, we will publish a timely withdrawal in the Federal 
Register indicating which provisions we are withdrawing. The provisions 
that are not withdrawn, i.e., our approval of the other maintenance 
plan that is not the subject of an adverse comment, will become 
effective on the date set out above, notwithstanding adverse comment on 
the other maintenance plan.
    We do not plan to open a second comment period, so anyone 
interested in commenting should do so at this time. If we do not 
receive adverse comments, no further activity is planned. For further 
information, please see the direct final action.

    Dated: December 15, 2016.
Alexis Strauss,
Acting Regional Administrator, Region IX.
[FR Doc. 2016-31636 Filed 1-6-17; 8:45 am]
 BILLING CODE 6560-50-P
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