
[Federal Register Volume 82, Number 188 (Friday, September 29, 2017)]
[Proposed Rules]
[Pages 45550-45551]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2017-20965]


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ENVIRONMENTAL PROTECTION AGENCY

40 CFR Part 52

[EPA-R07-OAR-2017-0267; FRL-9968-60-Region 7]


Approval of Implementation Plans; State of Iowa; Elements of 
Infrastructure SIP Requirements for the 2010 Sulfur Dioxide National 
Ambient Air Quality Standard (NAAQS)

AGENCY: Environmental Protection Agency (EPA).

ACTION: Proposed rule.

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SUMMARY: The Environmental Protection Agency (EPA) is proposing to 
approve elements of a State Implementation Plan (SIP) submission from 
the State of Iowa for the 2010 Sulfur Dioxide (SO2) National 
Ambient Air Quality Standard (NAAQS). Infrastructure SIPs address the 
applicable requirements of Clean Air Act (CAA) section 110, which 
requires that each state adopt and submit a SIP for the implementation, 
maintenance, and enforcement of each new or revised NAAQS promulgated 
by the EPA. These SIPs are commonly referred to as ``infrastructure'' 
SIPs. The infrastructure requirements are designed to ensure that the 
structural components of each state's air quality management program 
are adequate to meet the state's responsibilities under the CAA.
    In the ``Rules and Regulations'' section of this issue of the 
Federal Register, we are approving the state's SIP revisions as a 
direct final rule without a prior proposed rule. If we receive no 
adverse comment, we will not take further action on this proposed rule.

DATES: Comments must be received on or before October 30, 2017.

ADDRESSES: Submit your comments, identified by Docket ID No. EPA-R07-
OAR-2017-0267, to https://www.regulations.gov. Follow the online 
instructions for submitting comments. Once submitted, comments cannot 
be edited or removed from Regulations.gov. 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,

[[Page 45551]]

cloud, or other file sharing system). For additional submission 
methods, the full EPA public comment policy, information about CBI or 
multimedia submissions, and general guidance on making effective 
comments, please visit https://www2.epa.gov/dockets/commenting-epa-dockets.

FOR FURTHER INFORMATION CONTACT: Heather Hamilton, Air Planning and 
Development Branch, U.S. Environmental Protection Agency, Region 7, 
11201 Renner Boulevard, Lenexa, KS 66219 at (913) 551-7039, or by email 
at hamilton.heather@epa.gov.

SUPPLEMENTARY INFORMATION: This document proposes to take direct final 
action on Iowa's infrastructure SIP submissions for the 2010 
SO2 NAAQS. We have published a direct final rule approving 
the State's SIP revision (s) in the ``Rules and Regulations'' section 
of this issue of the Federal Register, because we view this as a 
noncontroversial action and anticipate no relevant adverse comment. We 
have explained our reasons for this action in the preamble to the 
direct final rule. A detailed Technical Support Document (TSD) is 
included in this rulemaking docket to address the following: A 
description of Clean Air Act section 110(a)(1) and (2) infrastructure 
SIPs; the applicable elements under sections 110(a)(1) and (2); EPA's 
approach to the review of infrastructure SIP submissions, and EPA's 
evaluation of how Iowa addressed the relevant elements of sections 
110(a)(1) and (2). If we receive no adverse comment, we will not take 
further action on this proposed rule. If we receive adverse comment, we 
will withdraw the direct final rule and it will not take effect. We 
would address all public comments in any subsequent final rule based on 
this proposed rule. We do not intend to institute a second comment 
period on this action. Any parties interested in commenting must do so 
at this time. For further information, please see the information 
provided in the ADDRESSES section of this document.

 List of Subjects in 40 CFR Part 52

    Environmental protection, Air pollution control, Incorporation by 
reference, Intergovernmental relations, Sulfur dioxide, Reporting and 
recordkeeping requirements.

    Dated: September 20, 2017.
 Cathy Stepp,
Acting Regional Administrator, Region 7.
[FR Doc. 2017-20965 Filed 9-28-17; 8:45 am]
 BILLING CODE 6560-50-P


