[Federal Register Volume 79, Number 58 (Wednesday, March 26, 2014)]
[Proposed Rules]
[Pages 16722-16734]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2014-06666]


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ENVIRONMENTAL PROTECTION AGENCY

40 CFR Part 52

[EPA-R10-OAR-2012-0183, FRL-9908-67-Region 10]


Approval and Promulgation of Implementation Plans; Idaho: 
Infrastructure Requirements for the 2008 Lead National Ambient Air 
Quality Standards

AGENCY: Environmental Protection Agency (EPA).

ACTION: Proposed rule.

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SUMMARY: The Environmental Protection Agency (EPA) is proposing to 
approve the February 14, 2012, State Implementation Plan (SIP) 
submittal from Idaho demonstrating that the SIP meets the 
infrastructure requirements of the Clean Air Act (CAA) for the National 
Ambient Air Quality Standards (NAAQS) promulgated for lead (Pb) on 
October 15, 2008. The CAA requires that each state, after a new or 
revised NAAQS is promulgated, review their

[[Page 16723]]

SIP to ensure that it meets the infrastructure requirements necessary 
to implement the new or revised NAAQS. The EPA is proposing to find 
that the Idaho SIP meets the CAA infrastructure requirements for the 
2008 Pb NAAQS.

DATES: Comments must be received on or before April 25, 2014.

ADDRESSES: Submit your comments, identified by Docket ID No. EPA-R10-
OAR-2012-0183, by any of the following methods:
     Email: [email protected].
     www.regulations.gov: Follow the on-line instructions for 
submitting comments.
     Mail: Kristin Hall, EPA Region 10, Office of Air, Waste 
and Toxics (AWT-107), 1200 Sixth Avenue, Suite 900, Seattle WA, 98101.
     Hand Delivery: EPA Region 10 Mailroom, 9th floor, 1200 
Sixth Avenue, Suite 900, Seattle WA, 98101. Attention: Kristin Hall, 
Office of Air, Waste and Toxics, AWT-107. Such deliveries are only 
accepted during normal hours of operation, and special arrangements 
should be made for deliveries of boxed information.
    Instructions: Direct your comments to Docket ID No. EPA-R10-OAR-
2012-0183. The EPA's 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 the 
disclosure of which 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 the EPA 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 the EPA 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, the EPA recommends 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 the EPA cannot read your comment due 
to technical difficulties and cannot contact you for clarification, the 
EPA 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: All documents in the docket are listed in the 
www.regulations.gov index. Although listed in the index, some 
information is not publicly available, e.g., CBI or other information 
the disclosure of which is restricted by statute. Certain other 
material, such as copyrighted material, is not placed on the Internet 
and will be publicly available only in hard copy. Publicly available 
docket materials are available either electronically in 
www.regulations.gov or in hard copy during normal business hours at the 
Office of Air, Waste and Toxics, EPA Region 10, 1200 Sixth Avenue, 
Seattle WA, 98101.

FOR FURTHER INFORMATION CONTACT: Kristin Hall at: (206) 553-6357, 
[email protected], or the above EPA, Region 10 address.

SUPPLEMENTARY INFORMATION: Throughout this document wherever ``we,'' 
``us'' or ``our'' is used, it is intended to refer to the EPA. 
Information is organized as follows:

Table of Contents

I. Background
II. CAA Sections 110(a)(1) and (2) Infrastructure Elements
III. EPA Approach To Review of Infrastructure SIP Submittals
IV. Analysis of the State's Submittal
V. Proposed Action
VI. Statutory and Executive Order Reviews

I. Background

    On October 15, 2008, the EPA revised the level of the primary and 
secondary Pb NAAQS from 1.5 micrograms per cubic meter ([micro]g/m\3\) 
to 0.15 [micro]g/m\3\. The CAA requires SIPs meeting the requirements 
of sections 110(a)(1) and (2) be submitted by states within three years 
after promulgation of a new or revised standard. CAA sections 110(a)(1) 
and (2) require states to address basic SIP requirements, including 
emissions inventories, monitoring, and modeling to assure attainment 
and maintenance of the standards, so-called ``infrastructure'' 
requirements. States were required to submit such SIPs for the 2008 Pb 
NAAQS to the EPA no later than October 15, 2011.
    To help states meet this statutory requirement, the EPA issued 
guidance to address infrastructure SIP elements under CAA sections 
110(a)(1) and (2).\1\ As noted in the guidance, to the extent an 
existing SIP already meets the CAA section 110(a)(2) requirements, 
states may certify that fact via a letter to the EPA. The certification 
should address all requirements of the CAA section 110(a)(2) 
infrastructure elements as applicable for the 2008 Pb NAAQS. Such 
certification should include documentation demonstrating a correlation 
between each infrastructure element specified at 110(a)(2) and an 
equivalent state statutory authority in the existing or submitted SIP. 
As for all SIP submittals, a state should provide reasonable public 
notice of, and an opportunity for a public hearing on, the 
certification before it is submitted to the EPA.
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    \1\ Stephen D. Page, Director, Office of Air Quality Planning 
and Standards. ``Guidance on Infrastructure State Implementation 
Plan (SIP) Elements Required Under Sections 110(a)(1) and (2) for 
the 2008 Lead (Pb) National Ambient Air Quality Standards.'' 
Memorandum to EPA Air Division Directors, Regions I-X, October 14, 
2011.
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    CAA section 110(a) imposes the obligation upon states to make a SIP 
submission to the EPA for a new or revised NAAQS, but the contents of 
that submission may vary depending upon the facts and circumstances. In 
the case of the 2008 Pb NAAQS, states typically have met the basic 
program elements required in CAA section 110(a)(2) through earlier SIP 
submissions. On February 14, 2012, the State of Idaho made a submittal 
to the EPA certifying that the Idaho SIP meets the CAA section 
110(a)(1) and (2) infrastructure requirements for the 2008 Pb NAAQS. 
The submittal included an analysis of Idaho's SIP as it relates to each 
section of the infrastructure requirements with regard to the 2008 Pb 
NAAQS. Idaho provided notice and an opportunity for public comment on 
the submittal from November 29, 2011 through December 28, 2011. A 
notice of public hearing was published in the Idaho Statesman on 
November 29, 2011. The State held a public hearing on December 28, 2011 
in Boise, Idaho. No comments or testimony were received by the State. 
We have evaluated Idaho's submittal and determined that Idaho met the 
requirements for reasonable notice and public hearing under section 
110(a)(2) of the CAA.

II. CAA Sections 110(a)(1) and (2) Infrastructure Elements

    CAA section 110(a)(1) provides the procedural and timing 
requirements for SIP submissions after a new or revised NAAQS is 
promulgated. CAA section 110(a)(2) lists specific elements that states 
must meet for infrastructure SIP requirements related to a newly 
established or revised NAAQS. These requirements include SIP 
infrastructure elements such as modeling, monitoring, and enforcement 
that are designed to assure attainment and maintenance of the NAAQS. 
The requirements, with

[[Page 16724]]

their corresponding CAA subsection, are listed below:
     110(a)(2)(A): Emission limits and other control measures.
     110(a)(2)(B): Ambient air quality monitoring/data system.
     110(a)(2)(C): Program for enforcement of control measures.
     110(a)(2)(D): Interstate transport.\2\
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    \2\ In accordance with the D.C. Circuit decision in EME Homer 
City, the EPA at this time is not treating the 110(a)(2)(D)(i)(I) 
SIP submission from Idaho for the 2008 Pb NAAQS as a required SIP 
submission. See EME Homer City Generation, L.P. v. EPA, 696 F .3d 7 
(D.C. Cir. 2012), cert. granted, 2013 U.S. Lexis 4801 (2013). 
However, even if the submission is not considered to be 
``required,'' the EPA must act on the 110(a)(2)(D)(i)(I) SIP 
submission from Idaho because section 110(k)(2) of the CAA requires 
the EPA to act on all SIP submissions. Unless the EME Homer City 
decision is reversed or otherwise modified by the Supreme Court, 
which granted review of the case on June 24, 2013, states are not 
required to submit 110(a)(2)(D)(i)(I) SIPs until the EPA has 
quantified their obligations under that section. The portions of the 
SIP submission relating to 110(a)(2)(D)(i)(II) and 110(a)(2)(D)(ii), 
in contrast, are required. In this notice, we are proposing to act 
on all portions of Idaho's 110(a)(2)(D) submission.
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     110(a)(2)(E): Adequate resources.
     110(a)(2)(F): Stationary source monitoring system.
     110(a)(2)(G): Emergency power.
     110(a)(2)(H): Future SIP revisions.
     110(a)(2)(I): Areas designated nonattainment and meet the 
applicable requirements of part D.
     110(a)(2)(J): Consultation with government officials; 
public notification; and Prevention of Significant Deterioration (PSD) 
and visibility protection.
     110(a)(2)(K): Air quality modeling/data.
     110(a)(2)(L): Permitting fees.
     110(a)(2)(M): Consultation/participation by affected local 
entities.
    The EPA's October 14, 2011 guidance restated our interpretation 
that two elements identified in CAA section 110(a)(2) are not governed 
by the three-year submission deadline of CAA section 110(a)(1) because 
SIPs incorporating necessary local nonattainment area controls are not 
due within three years after promulgation of a new or revised NAAQS, 
but rather, are due at the time the nonattainment area plan 
requirements are due pursuant to CAA section 172 and the various 
pollutant specific subparts 2-5 of part D. These requirements are: (i) 
submissions required by CAA section 110(a)(2)(C) to the extent that 
subsection refers to a permit program as required in part D, title I of 
the CAA, and (ii) submissions required by CAA section 110(a)(2)(I) 
which pertain to the nonattainment planning requirements of part D, 
title I of the CAA. As a result, this action does not address 
infrastructure elements related to CAA section 110(a)(2)(C) with 
respect to nonattainment new source review (NSR) or CAA section 
110(a)(2)(I). Furthermore, the EPA interprets the CAA section 
110(a)(2)(J) provision on visibility as not being triggered by a new 
NAAQS because the visibility requirements in part C, title I of the CAA 
are not changed by a new NAAQS.

III. EPA Approach To Review of Infrastructure SIP Submittals

    The EPA is acting upon the SIP submission from Idaho that addresses 
the infrastructure requirements of CAA sections 110(a)(1) and 110(a)(2) 
for the 2008 Pb NAAQS. The requirement for states to make a SIP 
submission of this type arises out of CAA section 110(a)(1). Pursuant 
to section 110(a)(1), states must make SIP submissions ``within 3 years 
(or such shorter period as the Administrator may prescribe) after the 
promulgation of a national primary ambient air quality standard (or any 
revision thereof),'' and these SIP submissions are to provide for the 
``implementation, maintenance, and enforcement'' of such NAAQS. The 
statute directly imposes on states the duty to make these SIP 
submissions, and the requirement to make the submissions is not 
conditioned upon the EPA's taking any action other than promulgating a 
new or revised NAAQS. Section 110(a)(2) includes a list of specific 
elements that ``[e]ach such plan'' submission must address.
    The EPA has historically referred to these SIP submissions made for 
the purpose of satisfying the requirements of CAA sections 110(a)(1) 
and 110(a)(2) as ``infrastructure SIP'' submissions. Although the term 
``infrastructure SIP'' does not appear in the CAA, the EPA uses the 
term to distinguish this particular type of SIP submission from 
submissions that are intended to satisfy other SIP requirements under 
the CAA, such as ``nonattainment SIP'' or ``attainment plan SIP'' 
submissions to address the nonattainment planning requirements of part 
D of title I of the CAA, ``regional haze SIP'' submissions required by 
the EPA rule to address the visibility protection requirements of CAA 
section 169A, and nonattainment new source review permit program 
submissions to address the permit requirements of CAA, title I, part D.
    Section 110(a)(1) addresses the timing and general requirements for 
infrastructure SIP submissions, and section 110(a)(2) provides more 
details concerning the required contents of these submissions. The list 
of required elements provided in section 110(a)(2) contains a wide 
variety of disparate provisions, some of which pertain to required 
legal authority, some of which pertain to required substantive program 
provisions, and some of which pertain to requirements for both 
authority and substantive program provisions.\3\ The EPA therefore 
believes that while the timing requirement in section 110(a)(1) is 
unambiguous, some of the other statutory provisions are ambiguous. In 
particular, the EPA believes that the list of required elements for 
infrastructure SIP submissions provided in section 110(a)(2) contains 
ambiguities concerning what is required for inclusion in an 
infrastructure SIP submission.
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    \3\ For example: Section 110(a)(2)(E)(i) provides that states 
must provide assurances that they have adequate legal authority 
under state and local law to carry out the SIP; section 110(a)(2)(C) 
provides that states must have a SIP-approved program to address 
certain sources as required by part C of title I of the CAA; and 
section 110(a)(2)(G) provides that states must have legal authority 
to address emergencies as well as contingency plans that are 
triggered in the event of such emergencies.
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    The following examples of ambiguities illustrate the need for the 
EPA to interpret some section 110(a)(1) and section 110(a)(2) 
requirements with respect to infrastructure SIP submissions for a given 
new or revised NAAQS. One example of ambiguity is that section 
110(a)(2) requires that ``each'' SIP submission must meet the list of 
requirements therein, while the EPA has long noted that this literal 
reading of the statute is internally inconsistent and would create a 
conflict with the nonattainment provisions in part D of title I of the 
CAA, which specifically address nonattainment SIP requirements.\4\ 
Section 110(a)(2)(I) pertains to nonattainment SIP requirements and 
part D addresses when attainment plan SIP submissions to address 
nonattainment area requirements are due. For example, section 172(b) 
requires the EPA to establish a schedule for submission of such plans 
for certain pollutants when the Administrator promulgates the 
designation of an area as nonattainment, and section 107(d)(1)(B) 
allows up to two years, or in some cases three years, for such 
designations to be promulgated.\5\ This ambiguity illustrates

[[Page 16725]]

that rather than apply all the stated requirements of section 110(a)(2) 
in a strict literal sense, the EPA must determine which provisions of 
section 110(a)(2) are applicable for a particular infrastructure SIP 
submission.
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    \4\ See, e.g., ``Rule To Reduce Interstate Transport of Fine 
Particulate Matter and Ozone (Clean Air Interstate Rule); Revisions 
to Acid Rain Program; Revisions to the NOX SIP Call; 
Final Rule,'' 70 FR 25162, at 25163--65 (May 12, 2005) (explaining 
relationship between timing requirement of section 110(a)(2)(D) 
versus section 110(a)(2)(I)).
    \5\ The EPA notes that this ambiguity within section 110(a)(2) 
is heightened by the fact that various subparts of part D set 
specific dates for submission of certain types of SIP submissions in 
designated nonattainment areas for various pollutants. Note, e.g., 
that section 182(a)(1) provides specific dates for submission of 
emissions inventories for the ozone NAAQS. Some of these specific 
dates are necessarily later than three years after promulgation of 
the new or revised NAAQS.
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    Another example of ambiguity within sections 110(a)(1) and 
110(a)(2) with respect to infrastructure SIPs pertains to whether 
states must meet all of the infrastructure SIP requirements in a single 
SIP submission, and whether the EPA must act upon such SIP submission 
in a single action. Although section 110(a)(1) directs states to submit 
``a plan'' to meet these requirements, the EPA interprets the CAA to 
allow states to make multiple SIP submissions separately addressing 
infrastructure SIP elements for the same NAAQS. If states elect to make 
such multiple SIP submissions to meet the infrastructure SIP 
requirements, the EPA can elect to act on such submissions either 
individually or in a larger combined action.\6\ Similarly, the EPA 
interprets the CAA to allow it to take action on the individual parts 
of one larger, comprehensive infrastructure SIP submission for a given 
NAAQS without concurrent action on the entire submission. For example, 
the EPA has sometimes elected to act at different times on various 
elements and sub-elements of the same infrastructure SIP submission.\7\
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    \6\ See, e.g., ``Approval and Promulgation of Implementation 
Plans; New Mexico; Revisions to the New Source Review (NSR) State 
Implementation Plan (SIP); Prevention of Significant Deterioration 
(PSD) and Nonattainment New Source Review (NNSR) Permitting,'' 78 FR 
4339 (January 22, 2013) (the EPA's final action approving the 
structural PSD elements of the New Mexico SIP submitted by the State 
separately to meet the requirements of the EPA's 2008 
PM2.5 NSR rule), and ``Approval and Promulgation of Air 
Quality Implementation Plans; New Mexico; Infrastructure and 
Interstate Transport Requirements for the 2006 PM2.5 
NAAQS,'' (78 FR 4337) (January 22, 2013) (the EPA's final action on 
the infrastructure SIP for the 2006 PM2.5 NAAQS).
    \7\ On December 14, 2007, the State of Tennessee, through the 
Tennessee Department of Environment and Conservation, made a SIP 
revision to the EPA demonstrating that the State meets the 
requirements of sections 110(a)(1) and (2). The EPA proposed action 
for infrastructure SIP elements (C) and (J) on January 23, 2012 (77 
FR 3213) and took final action on March 14, 2012 (77 FR 14976). On 
April 16, 2012 (77 FR 22533) and July 23, 2012 (77 FR 42997), the 
EPA took separate proposed and final actions on all other section 
110(a)(2) infrastructure SIP elements of Tennessee's December 14, 
2007 submittal.
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    Ambiguities within sections 110(a)(1) and 110(a)(2) may also arise 
with respect to infrastructure SIP submission requirements for 
different NAAQS. Thus, the EPA notes that not every element of section 
110(a)(2) would be relevant, or as relevant, or relevant in the same 
way, for each new or revised NAAQS. The states' attendant 
infrastructure SIP submissions for each NAAQS therefore could be 
different. For example, the monitoring requirements that a state might 
need to meet in its infrastructure SIP submission for purposes of 
section 110(a)(2)(B) could be very different for different pollutants, 
for example because the content and scope of a state's infrastructure 
SIP submission to meet this element might be very different for an 
entirely new NAAQS than for a minor revision to an existing NAAQS.\8\
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    \8\ For example, implementation of the 1997 PM2.5 
NAAQS required the deployment of a system of new monitors to measure 
ambient levels of that new indicator species for the new NAAQS.
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    The EPA notes that interpretation of section 110(a)(2) is also 
necessary when the EPA reviews other types of SIP submissions required 
under the CAA. Therefore, as with infrastructure SIP submissions, the 
EPA also has to identify and interpret the relevant elements of section 
110(a)(2) that logically apply to these other types of SIP submissions. 
For example, section 172(c)(7) requires that attainment plan SIP 
submissions required by part D have to meet the ``applicable 
requirements'' of section 110(a)(2). Thus, for example, attainment plan 
SIP submissions must meet the requirements of section 110(a)(2)(A) 
regarding enforceable emission limits and control measures and section 
110(a)(2)(E)(i) regarding air agency resources and authority. By 
contrast, it is clear that attainment plan SIP submissions required by 
part D would not need to meet the portion of section 110(a)(2)(C) that 
pertains to the PSD program required in part C of title I of the CAA, 
because PSD does not apply to a pollutant for which an area is 
designated nonattainment and thus subject to part D planning 
requirements. As this example illustrates, each type of SIP submission 
may implicate some elements of section 110(a)(2) but not others.
    Given the potential for ambiguity in some of the statutory language 
of section 110(a)(1) and section 110(a)(2), the EPA believes that it is 
appropriate to interpret the ambiguous portions of section 110(a)(1) 
and section 110(a)(2) in the context of acting on a particular SIP 
submission. In other words, the EPA assumes that Congress could not 
have intended that each and every SIP submission, regardless of the 
NAAQS in question or the history of SIP development for the relevant 
pollutant, would meet each of the requirements, or meet each of them in 
the same way. Therefore, the EPA has adopted an approach under which it 
reviews infrastructure SIP submissions against the list of elements in 
section 110(a)(2), but only to the extent each element applies for that 
particular NAAQS.
    Historically, the EPA has elected to use guidance documents to make 
recommendations to states for infrastructure SIPs, in some cases 
conveying needed interpretations on newly arising issues and in some 
cases conveying interpretations that have already been developed and 
applied to individual SIP submissions for particular elements.\9\ The 
EPA most recently issued guidance for infrastructure SIPs on September 
13, 2013 (2013 Guidance).\10\ The EPA developed this document to 
provide states with up-to-date guidance for infrastructure SIPs for any 
new or revised NAAQS. Within this guidance, the EPA describes the duty 
of states to make infrastructure SIP submissions to meet basic 
structural SIP requirements within three years of promulgation of a new 
or revised NAAQS. The EPA also made recommendations about many specific 
subsections of section 110(a)(2) that are relevant in the context of 
infrastructure SIP submissions.\11\ The guidance also discusses the 
substantively important issues that are germane to certain subsections 
of section 110(a)(2). Significantly, the EPA interprets sections 
110(a)(1) and 110(a)(2) such that infrastructure SIP submissions need 
to address certain issues and need not address others. Accordingly, the 
EPA reviews each infrastructure SIP submission for compliance with the 
applicable

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statutory provisions of section 110(a)(2), as appropriate.
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    \9\ The EPA notes, however, that nothing in the CAA requires the 
EPA to provide guidance or to promulgate regulations for 
infrastructure SIP submissions. The CAA directly applies to states 
and requires the submission of infrastructure SIP submissions, 
regardless of whether or not the EPA provides guidance or 
regulations pertaining to such submissions. EPA elects to issue such 
guidance in order to assist states, as appropriate.
    \10\ ``Guidance on Infrastructure State Implementation Plan 
(SIP) Elements under Clean Air Act Sections 110(a)(1) and 
110(a)(2),'' Memorandum from Stephen D. Page, September 13, 2013.
    \11\ The EPA's September 13, 2013, guidance did not make 
recommendations with respect to infrastructure SIP submissions to 
address section 110(a)(2)(D)(i)(I). The EPA issued the guidance 
shortly after the U.S. Supreme Court agreed to review the D.C. 
Circuit decision in EME Homer City, 696 F.3d7 (D.C. Cir. 2012) which 
had interpreted the requirements of section 110(a)(2)(D)(i)(I). In 
light of the uncertainty created by ongoing litigation, the EPA 
elected not to provide additional guidance on the requirements of 
section 110(a)(2)(D)(i)(I) at that time. As the guidance is neither 
binding nor required by statute, whether the EPA elects to provide 
guidance on a particular section has no impact on a state's CAA 
obligations.
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    As an example, section 110(a)(2)(E)(ii) is a required element of 
section 110(a)(2) for infrastructure SIP submissions. Under this 
element, a state must meet the substantive requirements of section 128, 
which pertain to state boards that approve permits or enforcement 
orders and heads of executive agencies with similar powers. Thus, the 
EPA reviews infrastructure SIP submissions to ensure that the state's 
SIP appropriately addresses the requirements of section 
110(a)(2)(E)(ii) and section 128. The 2013 Guidance explains the EPA's 
interpretation that there may be a variety of ways by which states can 
appropriately address these substantive statutory requirements, 
depending on the structure of an individual state's permitting or 
enforcement program (e.g., whether permits and enforcement orders are 
approved by a multi-member board or by a head of an executive agency). 
However they are addressed by the state, the substantive requirements 
of section 128 are necessarily included in the EPA's evaluation of 
infrastructure SIP submissions because section 110(a)(2)(E)(ii) 
explicitly requires that the state satisfy the provisions of section 
128.
    As another example, the EPA's review of infrastructure SIP 
submissions with respect to the PSD program requirements in sections 
110(a)(2)(C), (D)(i)(II), and (J) focuses upon the structural PSD 
program requirements contained in part C and the EPA's PSD regulations. 
Structural PSD program requirements include provisions necessary for 
the PSD program to address all regulated sources and NSR pollutants, 
including greenhouse gases. By contrast, structural PSD program 
requirements do not include provisions that are not required under the 
EPA's regulations at 40 CFR 51.166 but are merely available as an 
option for the state, such as the option to provide grandfathering of 
complete permit applications with respect to the 2012 PM2.5 
NAAQS. Accordingly, the latter optional provisions are types of 
provisions the EPA considers irrelevant in the context of an 
infrastructure SIP action.
    For other section 110(a)(2) elements, however, the EPA's review of 
a state's infrastructure SIP submission focuses on assuring that the 
state's SIP meets basic structural requirements. For example, section 
110(a)(2)(C) includes, inter alia, the requirement that states have a 
program to regulate minor new sources. Thus, the EPA evaluates whether 
the state has an EPA-approved minor new source review program and 
whether the program addresses the pollutants relevant to that NAAQS. In 
the context of acting on an infrastructure SIP submission, however, the 
EPA does not think it is necessary to conduct a review of each and 
every provision of a state's existing minor source program (i.e., 
already in the existing SIP) for compliance with the requirements of 
the CAA and EPA's regulations that pertain to such programs.
    With respect to certain other issues, the EPA does not believe that 
an action on a state's infrastructure SIP submission is necessarily the 
appropriate type of action in which to address possible deficiencies in 
a state's existing SIP. These issues include: (i) Existing provisions 
related to excess emissions from sources during periods of startup, 
shutdown, or malfunction that may be contrary to the CAA and the EPA's 
policies addressing such excess emissions (``SSM''); (ii) existing 
provisions related to ``director's variance'' or ``director's 
discretion'' that may be contrary to the CAA because they purport to 
allow revisions to SIP-approved emissions limits while limiting public 
process or not requiring further approval by the EPA; and (iii) 
existing provisions for PSD programs that may be inconsistent with 
current requirements of the EPA's ``Final NSR Improvement Rule,'' 67 FR 
80186 (December 31, 2002), as amended by 72 FR 32526 (June 13, 2007). 
Thus, the EPA believes it may approve an infrastructure SIP submission 
without scrutinizing the totality of the existing SIP for such 
potentially deficient provisions and may approve the submission even if 
it is aware of such existing provisions.\12\ It is important to note 
that the EPA's approval of a state's infrastructure SIP submission 
should not be construed as explicit or implicit re-approval of any 
existing potentially deficient provisions that relate to the three 
specific issues just described.
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    \12\ By contrast, the EPA notes that if a state were to include 
a new provision in an infrastructure SIP submission that contained a 
legal deficiency, such as a new exemption for excess emissions 
during SSM events, then the EPA would need to evaluate that 
provision for compliance against the rubric of applicable CAA 
requirements in the context of the action on the infrastructure SIP.
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    The EPA's approach to review of infrastructure SIP submissions is 
to identify the CAA requirements that are logically applicable to that 
submission. The EPA believes that this approach to the review of a 
particular infrastructure SIP submission is appropriate, because it 
would not be reasonable to read the general requirements of section 
110(a)(1) and the list of elements in 110(a)(2) as requiring review of 
each and every provision of a state's existing SIP against all 
requirements in the CAA and the EPA regulations merely for purposes of 
assuring that the state in question has the basic structural elements 
for a functioning SIP for a new or revised NAAQS. Because SIPs have 
grown by accretion over the decades as statutory and regulatory 
requirements under the CAA have evolved, they may include some outmoded 
provisions and historical artifacts. These provisions, while not fully 
up to date, nevertheless may not pose a significant problem for the 
purposes of ``implementation, maintenance, and enforcement'' of a new 
or revised NAAQS when the EPA evaluates adequacy of the infrastructure 
SIP submission. The EPA believes that a better approach is for states 
and the EPA to focus attention on those elements of section 110(a)(2) 
of the CAA most likely to warrant a specific SIP revision due to the 
promulgation of a new or revised NAAQS or other factors.
    For example, the EPA's 2013 Guidance gives simpler recommendations 
with respect to carbon monoxide than other NAAQS pollutants to meet the 
visibility requirements of section 110(a)(2)(D)(i)(II), because carbon 
monoxide does not affect visibility. As a result, an infrastructure SIP 
submission for any future new or revised NAAQS for carbon monoxide need 
only state this fact in order to address the visibility prong of 
section 110(a)(2)(D)(i)(II).
    Finally, the EPA believes that its approach with respect to 
infrastructure SIP requirements is based on a reasonable reading of 
sections 110(a)(1) and 110(a)(2) because the CAA provides other avenues 
and mechanisms to address specific substantive deficiencies in existing 
SIPs. These other statutory tools allow the EPA to take appropriately 
tailored action, depending upon the nature and severity of the alleged 
SIP deficiency. Section 110(k)(5) authorizes the EPA to issue a ``SIP 
call'' whenever the EPA determines that a state's SIP is substantially 
inadequate to attain or maintain the NAAQS, to mitigate interstate 
transport, or to otherwise comply with the CAA.\13\ Section 110(k)(6) 
authorizes the EPA to correct errors in past actions, such as

[[Page 16727]]

past approvals of SIP submissions.\14\ Significantly, the EPA's 
determination that an action on a state's infrastructure SIP submission 
is not the appropriate time and place to address all potential existing 
SIP deficiencies does not preclude the EPA's subsequent reliance on 
provisions in section 110(a)(2) as part of the basis for action to 
correct those deficiencies at a later time. For example, although it 
may not be appropriate to require a state to eliminate all existing 
inappropriate director's discretion provisions in the course of acting 
on an infrastructure SIP submission, the EPA believes that section 
110(a)(2)(A) may be among the statutory bases that EPA relies upon in 
the course of addressing such deficiency in a subsequent action.\15\
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    \13\ For example, the EPA issued a SIP call to Utah to address 
specific existing SIP deficiencies related to the treatment of 
excess emissions during SSM events. See ``Finding of Substantial 
Inadequacy of Implementation Plan; Call for Utah State 
Implementation Plan Revisions,'' 74 FR 21639 (April 18, 2011).
    \14\ The EPA has used this authority to correct errors in past 
actions on SIP submissions related to PSD programs. See ``Limitation 
of Approval of Prevention of Significant Deterioration Provisions 
Concerning Greenhouse Gas Emitting-Sources in State Implementation 
Plans; Final Rule,'' 75 FR 82536 (December 30, 2010). The EPA has 
previously used its authority under CAA section 110(k)(6) to remove 
numerous other SIP provisions that the Agency determined it had 
approved in error. See, e.g., 61 FR 38664 (July 25, 1996) and 62 FR 
34641 (June 27, 1997) (corrections to American Samoa, Arizona, 
California, Hawaii, and Nevada SIPs); 69 FR 67062 (November 16, 
2004) (corrections to California SIP); and 74 FR 57051 (November 3, 
2009) (corrections to Arizona and Nevada SIPs).
    \15\ See, e.g., the EPA's disapproval of a SIP submission from 
Colorado on the grounds that it would have included a director's 
discretion provision inconsistent with CAA requirements, including 
section 110(a)(2)(A). See, e.g., 75 FR 42342 at 42344 (July 21, 
2010) (proposed disapproval of director's discretion provisions); 76 
FR 4540 (Jan. 26, 2011) (final disapproval of such provisions).
---------------------------------------------------------------------------

IV. Analysis of the State's Submittal

110(a)(2)(A): Emission Limits and Other Control Measures

    CAA section 110(a)(2)(A) requires SIPs to include enforceable 
emission limits and other control measures, means or techniques 
(including economic incentives such as fees, marketable permits, and 
auctions of emissions rights), as well as schedules and timetables for 
compliance, as may be necessary or appropriate to meet the applicable 
requirements of the CAA.
    State submittal: Idaho's submittal cites an overview of the State 
air quality laws and regulations including portions of the Idaho 
Environmental Protection and Health Act (EPHA) and the Rules for the 
Control of Air Pollution located in the Idaho Administrative Procedures 
Act (IDAPA) 58.01.01. The Idaho Department of Environmental Quality 
(DEQ) annually updates, and submits to the EPA for incorporation by 
reference, all NAAQS and updates to 40 CFR part 51, Appendix W--
Guidelines on Air Quality Models. Relevant laws include Idaho Code 
Section 39-105(3)(d) which provides Idaho DEQ with authority to 
supervise and administer a system to safeguard air quality, and Idaho 
Code Section 39-115 which provides Idaho DEQ with specific authority 
for the issuance of air quality permits. Specific regulations 
referenced in the State's submittal include IDAPA 58.01.01.107.3 
(incorporation by reference of federal regulations), IDAPA 
58.01.01.200-228 (permit to construct rules), IDAPA 58.01.01.400-410 
(operating permit rules), IDAPA 58.01.01.600-623 (control of open 
burning), IDAPA 58.01.01.650-651 (control of fugitive emissions), IDAPA 
58.01.01.625 (visible emissions requirements and testing), and IDAPA 
58.01.01.460-461 (banking of emissions).
    EPA analysis: Idaho's SIP meets the requirements of section 
110(a)(2)(A) for the 2008 Pb NAAQS, subject to the following 
clarifications. First, this infrastructure element does not require the 
submittal of regulations or emission limitations developed specifically 
for attaining the 2008 Pb NAAQS. Furthermore, the State has no areas 
designated nonattainment for the 2008 Pb NAAQS and generally regulates 
emissions of Pb through its SIP-approved major and minor new source 
review (NSR) permitting programs, in addition to rules for the control 
of open burning, fugitive emissions, activities that generate visible 
emissions, and emissions banking.
    The State of Idaho incorporates by reference the Federal NAAQS 
promulgated as of July 1, 2012, including the 2008 Pb NAAQS, at IDAPA 
58.01.01.107. The EPA most recently approved IDAPA 58.01.01.107 on 
March 3, 2014 (79 FR 11711). This section also incorporates by 
reference Federal requirements for preparation, adoption, and submittal 
of implementation plans, Prevention of Significant Deterioration 
program provisions, and ambient air monitoring.
    The EPA most recently approved changes to the State's major and 
minor NSR permitting rules on March 3, 2014 (79 FR 11711). The State's 
NSR rules incorporate the Federal nonattainment NSR regulations and 
Federal PSD regulations at IDAPA 58.01.204 and IDAPA 58.01.01.205 
respectively. In addition, the State's Tier II operating permit rules 
at IDAPA 58.01.01.400-410 require that to obtain an operating permit, 
the applicant must demonstrate the source will not cause or 
significantly contribute to a violation of any ambient air quality 
standard. IDAPA 58.01.01.401.03 provides Idaho DEQ authority to require 
an operating permit if the department determines emission rate 
reductions are necessary to attain or maintain any ambient air quality 
standard or applicable PSD increment.
    In addition to the permitting rules described above, the State has 
promulgated rules to limit and control emissions from open burning 
(IDAPA 58.01.01.600-623), fugitive dust (IDAPA 58.01.01.650-651), and 
activities that generate visible emissions (IDAPA 58.01.01.625). These 
rules include emission limits, control measures, and opacity limits. 
The State has also promulgated rules addressing banking of emissions at 
IDAPA 58.01.01.460-461. Based on the above analysis, the EPA is 
proposing to approve the Idaho SIP as meeting the requirements of CAA 
section 110(a)(2)(A) for the 2008 Pb NAAQS.
    We note that, in this action, we are not proposing to approve or 
disapprove any existing State provisions with regard to excess 
emissions during startup, shutdown, or malfunction (SSM) of operations 
at a facility. The EPA believes that a number of states may have SSM 
provisions that are contrary to the CAA and existing EPA guidance \16\ 
and the EPA plans to address such state regulations. In the meantime, 
the EPA encourages any state having a deficient SSM provision to take 
steps to correct it as soon as possible.
---------------------------------------------------------------------------

    \16\ For further description of the EPA's SSM Policy, see, e.g., 
a memorandum dated September 20, 1999, titled ``State Implementation 
Plans: Policy Regarding Excess Emissions During Malfunctions, 
Startup, and Shutdown,'' from Steven A. Herman, Assistant 
Administrator for Enforcement and Compliance Assurance, and Robert 
Perciasepe, Assistant Administrator for Air and Radiation. Also, the 
EPA issued a proposed action on February 12, 2013, titled ``State 
Implementation Plans: Response to Petition for Rulemaking: Findings 
of Substantial Inadequacy; and SIP Calls to Amend Provisions 
Applying to excess Emissions During Periods of Startup, Shutdown and 
Malfunction.'' This rulemaking responds to a petition for rulemaking 
filed by the Sierra Club that concerns SSM provisions in 39 states' 
SIPs (February 22, 2013, 78 FR 12460).
---------------------------------------------------------------------------

    In addition, we are not proposing to approve or disapprove any 
existing State rules with regard to director's discretion or variance 
provisions. The EPA believes that a number of states may have such 
provisions that are contrary to the CAA and existing EPA guidance (52 
FR 45109), November 24, 1987, and the EPA plans to take action in the 
future to address such state regulations. In the meantime, we encourage 
any state having a director's discretion or variance provision that is 
contrary to the CAA and the EPA guidance to take steps to correct the 
deficiency as soon as possible.

[[Page 16728]]

110(a)(2)(B): Ambient Air Quality Monitoring/Data System

    CAA section 110(a)(2)(B) requires SIPs to include provisions to 
provide for establishment and operation of ambient air quality 
monitors, collecting and analyzing ambient air quality data, and making 
these data available to the EPA upon request.
    State submittal: The Idaho submittal references IDAPA 58.01.01.107 
and IDAPA 58.01.01.576.05 in response to this requirement. These rules 
incorporate by reference 40 CFR part 50, National Primary and Secondary 
Air Quality Standards; 40 CFR part 51, Requirements for Preparation, 
Adoption, and Submittal of Implementation Plans; 40 CFR part 52, 
Approval and Promulgation of Implementation Plans; 40 CFR part 53, 
Ambient Air Monitoring Reference and Equivalent Methods; and 40 CFR 
part 58, Appendix B Ambient Air Quality Surveillance Quality Assurance 
Requirements for Prevention of Significant Deterioration. The State 
submittal states that these rules give the State authority to implement 
ambient air monitoring surveillance systems in accordance with the 
requirements of referenced sections of the CAA. The collected 
information is analyzed and submitted by the State to the EPA.
    EPA analysis: A comprehensive air quality monitoring plan, intended 
to meet the requirements of 40 CFR part 58 was submitted by Idaho on 
January 15, 1980 (40 CFR 52.670) and approved by the EPA on July 28, 
1982. This air quality monitoring plan has been subsequently updated 
and approved by the EPA on March 10, 2014.\17\ This approved plan meets 
the EPA's revised ambient monitoring requirements for Pb promulgated on 
December 14, 2010 (75 FR 81126) as specified in 40 CFR part 58. Idaho 
provides the State's annual network monitoring plan, air quality 
monitoring data summaries, and a map of the State air monitoring 
network at: http://www.deq.idaho.gov/air-quality/monitoring/monitoring-network.aspx. Therefore, we are proposing to approve the Idaho SIP as 
meeting the requirements of CAA section 110(a)(2)(B) for the 2008 Pb 
NAAQS.
---------------------------------------------------------------------------

    \17\ Idaho Air Monitoring Network Plan Approval Letter, dated 
March 10, 2014.
---------------------------------------------------------------------------

110(a)(2)(C): Program for Enforcement of Control Measures

    CAA section 110(a)(2)(C) requires states to include a program 
providing for enforcement of all SIP measures and the regulation of 
construction of new or modified stationary sources, including a program 
to meet PSD and nonattainment NSR requirements.
    State submittal: The Idaho submittal refers to Idaho Code Section 
39-108 which provides Idaho DEQ with authority to enforce both 
administratively and civilly the Idaho EPHA, or any rule, permit or 
order promulgated pursuant to the EPHA. Criminal enforcement is 
authorized at Idaho Code Section 39-109. Emergency order authority, 
similar to that under Section 303 of the CAA, is located at Idaho Code 
Section 39-112. The Idaho submittal also refers to laws and regulations 
requiring stationary source compliance with the NAAQS discussed in the 
response to CAA section 110(a)(2)(A).
    The Idaho submittal also refers to the annual incorporation by 
reference (IBR) rulemaking which updates the Idaho SIP to include 
Federal changes to the NAAQS and PSD program. The submittal states that 
the annual IBR updates, along with IDAPA sections 200-228 (permitting 
requirements for new and modified sources) and 575-587 (air quality 
standards and area classification), provide Idaho DEQ with authority to 
implement the PSD and NSR program.
    EPA analysis: With regards to the requirement to have a program 
providing for enforcement of all SIP measures, we are proposing to find 
that the Idaho code provisions described above provide Idaho DEQ with 
authority to enforce the Idaho EPHA, air quality regulations, permits, 
and orders promulgated pursuant to the EPHA. Idaho DEQ staffs and 
maintains an enforcement program to ensure compliance with SIP 
requirements. Idaho DEQ may issue emergency orders to reduce or 
discontinue emission of air contaminants where air emissions cause or 
contribute to imminent and substantial endangerment. Enforcement cases 
may be referred to the State Attorney General's Office for civil or 
criminal enforcement. Therefore, we are proposing to approve the Idaho 
SIP as meeting the requirements of CAA section 110(a)(2)(C) related to 
enforcement for the 2008 Pb NAAQS.
    To generally meet the requirements of CAA section 110(a)(2)(C) with 
regards to the regulation of construction of new or modified stationary 
sources, a state is required to have PSD, nonattainment NSR, and minor 
NSR permitting programs adequate to implement the 2008 Pb NAAQS. As 
explained above, we are not in this action evaluating nonattainment 
related provisions, such as the nonattainment NSR program required by 
part D, Title I of the CAA. In addition, Idaho has no designated 
nonattainment areas for the 2008 Pb NAAQS.
    We most recently approved revisions to Idaho's PSD program on March 
3, 2014 (79 FR 11711), including updates of the Idaho PSD program for 
purposes of fine particulate matter implementation in attainment and 
unclassifiable areas. Previously on July 17, 2012 (77 FR 41916), we 
approved a revision to the Idaho SIP to provide authority to implement 
the PSD permitting program with respect to greenhouse gas emissions. 
The Idaho PSD program implements the 2008 Pb NAAQS and incorporates the 
Federal PSD program regulations at 40 CFR 52.21 by reference as of July 
1, 2012. As a result, we are proposing to approve the Idaho SIP as 
meeting the requirements of CAA section 110(a)(2)(C) with regards to 
PSD for the 2008 Pb NAAQS.
    The EPA notes that on January 4, 2013, the U.S. Court of Appeals in 
the District of Columbia, in Natural Resources Defense Council v. EPA, 
706 F.3d 428 (D.C. Cir.), issued a judgment that remanded two of the 
EPA's rules implementing the 1997 PM2.5 NAAQS, including the 
``Implementation of New Source Review (NSR) Program for Particulate 
Matter Less Than 2.5 Micrometers (PM2.5),'' (73 FR 28321, 
May 16, 2008) (2008 PM2.5 NSR Implementation Rule). The 
court ordered the EPA to ``repromulgate these rules pursuant to Subpart 
4 consistent with this opinion.''Id. at 437. Subpart 4 of part D, title 
I of the CAA establishes additional provisions for particulate matter 
nonattainment areas. The 2008 PM2.5 NSR Implementation Rule 
addressed by the court's decision promulgated NSR requirements for 
implementation of PM2.5 in both nonattainment areas 
(nonattainment NSR) and attainment/unclassifiable areas (PSD). As the 
requirements of subpart 4 only pertain to nonattainment areas, the EPA 
does not consider the portions of the 2008 PM2.5 NSR 
Implementation Rule that address requirements for PM2.5 
attainment and unclassifiable areas to be affected by the court's 
opinion. Moreover, the EPA does not anticipate the need to revise any 
PSD requirements promulgated in the 2008 PM2.5 NSR 
Implementation Rule in order to comply with the Court's decision. 
Accordingly, the EPA's proposed approval of elements 110(a)(2)(C), 
(D)(i)(II), and (J), with respect to the PSD requirements, does not 
conflict with the Court's opinion. The EPA interprets the CAA section 
110(a)(1) and (2) infrastructure submittals due three years after 
adoption or revision of a NAAQS to

[[Page 16729]]

exclude nonattainment area requirements, including requirements 
associated with a nonattainment NSR program. Instead, these elements 
are typically referred to as nonattainment SIP or attainment plan 
elements, which are due by the dates statutorily prescribed under 
subparts 2 through 5 under part D, extending as far as ten years 
following designations for some elements.
    In addition, on January 22, 2013, the U.S. Court of Appeals for the 
District of Columbia, in Sierra Club v. EPA, 703 F.3d 458 (D.C. Cir. 
2013), issued a judgment that, inter alia, vacated the provisions 
adding the PM2.5 Significant Monitoring Concentration to the 
Federal regulations, at 40 CFR 51.166(i)(5)(i)(c) and 
52.21(i)(5)(i)(c), that were promulgated as part of the ``Prevention of 
Significant Deterioration (PSD) for Particulate Matter Less than 2.5 
Micrometers (PM2.5)--Increments, Significant Impact Levels 
(SILs) and Significant Monitoring Concentration (SMC); Final Rule'' 
(2010 PSD PM2.5 Implementation Rule) (75 FR 64864). In its 
decision, the court held that the EPA did not have the authority to use 
SMCs to exempt permit applicants from the statutory requirement in 
section 165(e)(2) of the CAA that ambient monitoring data for 
PM2.5 be included in all PSD permit applications. Thus, 
although the PM2.5 SMC was not a required element of a 
state's PSD program, were a state PSD program that contains such a 
provision to use that provision to issue new permits without requiring 
ambient PM2.5 monitoring data, such application of the 
vacated SMC would be inconsistent with the Court's opinion and the 
requirements of section 165(e)(2) of the CAA.
    This decision also, on the EPA's request, vacated and remanded to 
the EPA for further consideration the portions of the 2010 PSD 
PM2.5 Implementation Rule that revised 40 CFR 51.166 and 40 
CFR 52.21 related to SILs for PM2.5. The EPA requested this 
vacatur and remand of two of the three provisions in the EPA 
regulations that contain SILs for PM2.5, because the wording 
of these two SIL provisions (40 CFR 51.166(k)(2) and 40 CFR 
52.21(k)(2)) is inconsistent with the explanation of when and how SILs 
should be used by permitting authorities that we provided in the 
preamble to the Federal Register publication when we promulgated these 
provisions. The third SIL provision (40 CFR 51.165(b)(2)) was not 
vacated and remains in effect. The Court's decision does not affect the 
PSD increments for PM2.5 promulgated as part of the 2010 PSD 
PM2.5 Implementation Rule.
    Because of the vacatur of the EPA regulations as they relate to the 
PM2.5 SILs and SMC, in our previous action on March 3, 2014, 
we disapproved Idaho's incorporation by reference of the vacated 
provisions into the Idaho SIP (79 FR 11711). This action takes no 
additional action with respect to those SIP provisions that were 
previously disapproved. In this action we are proposing to approve the 
Idaho SIP as meeting the requirements of CAA section 110(a)(2)(C), 
(D)(i)(II) and (J) as those elements relate to a comprehensive PSD 
program. The EPA recently amended its regulations to remove the vacated 
PM2.5 SILs and SMC provisions from the PSD regulations 
(December 9, 2013, 78 FR 73698). The EPA will initiate a separate 
rulemaking in the future regarding the PM2.5 SILs that will 
address the Court's remand. In the meantime, the EPA is advising states 
to begin preparations to remove the vacated provisions from state PSD 
regulations.
    With regard to the minor NSR requirement of this element, we have 
determined that the Idaho minor NSR program adopted pursuant to section 
110(a)(2)(C) of the CAA regulates emissions of Pb. Based on the 
foregoing, we are proposing to approve the Idaho SIP as meeting the 
requirements of CAA section 110(a)(2)(C) for the 2008 Pb NAAQS.

110(a)(2)(D): Interstate Transport

    CAA section 110(a)(2)(D)(i) requires state SIPs to include 
provisions prohibiting any source or other type of emissions activity 
in one state from contributing significantly to nonattainment, or 
interfering with maintenance of the NAAQS in another state (CAA section 
110(a)(2)(D)(i)(I)). Further, this section requires state SIPs to 
include provisions prohibiting any source or other type of emissions 
activity in one state from interfering with measures required to 
prevent significant deterioration (PSD) of air quality, or from 
interfering with measures required to protect visibility (i.e. measures 
to address regional haze) in any state (CAA section 
110(a)(2)(D)(i)(II)).
    State submittal: As suggested by the EPA's October 14, 2011 
guidance, Idaho submitted an assessment as to whether or not emissions 
from Pb sources located in close proximity to the State's borders have 
emissions that impact neighboring states such that they contribute 
significantly to nonattainment or interfere with maintenance in those 
states. The Idaho submittal includes an inventory of Idaho Pb sources 
from the 2008 National Emissions Inventory, in addition to a map of the 
largest Pb sources. The submittal states that all Idaho Pb sources emit 
well below 0.5 tons per year, and that Pb sources are very dispersed 
and far away from the nearest designated Pb nonattainment areas. The 
submittal concludes that Idaho's very small Pb emission sources, 
combined with the distance and terrain between these sources and the 
closest Pb nonattainment areas, indicate that Idaho is not causing or 
contributing to any Pb nonattainment or maintenance issues or 
interfering with any control measures in applicable implementation 
plans in other states.
    The Idaho submittal further states that East Helena, Montana, is 
the only designated Pb nonattainment area in states surrounding Idaho. 
Although in 1992 East Helena was designated nonattainment for the 1978 
Pb NAAQS, the primary source of Pb emissions in East Helena was the 
local smelter, which shut down in 2001. In 2011, the entire state of 
Montana was designated unclassifiable/attainment for the 2008 Pb NAAQS, 
the level of which is an order of magnitude lower than the level of the 
1978 NAAQS. The next closest designated Pb nonattainment area is 
located in Los Angeles, California. The State submittal references a 
South Coast Air Quality Management District Pb Monitoring Network Plan 
which assessed major sources of Pb emissions in Los Angeles, and found 
that modeled Pb concentrations dropped to low levels within 250-500 
meters of the sources.
    With regard to provisions prohibiting any source or other type of 
emissions activity in one state from interfering with measures required 
to prevent significant deterioration of air quality, the submittal 
references Idaho's SIP-approved PSD program. Finally, with regard to 
visibility, the Idaho submittal references the Idaho regional haze SIP 
submitted to the EPA on October 25, 2010, and the EPA's final Pb NAAQS 
Rule promulgated on November 12, 2008 that noted Pb particulate does 
not transport over long distances (73 FR 66964).
    EPA analysis: The EPA believes, as noted in the October 14, 2011 
guidance, that the physical properties of Pb prevent Pb emissions from 
experiencing the same travel or formation phenomena as fine particulate 
matter or ozone. More specifically, there is a sharp decrease in Pb 
concentrations, at least in the coarse fraction, as the distance from a 
Pb source increases. Accordingly, while it may be possible for a source 
in a state to emit Pb in a location and in quantities that may 
contribute significantly to nonattainment in, or

[[Page 16730]]

interfere with maintenance by, any other state, the EPA anticipates 
that this would be a rare situation, e.g., where large sources are in 
close proximity to state boundaries. The EPA's experience with initial 
Pb designations suggests that sources that emit less than 0.5 tons per 
year or that are located more than two miles from a state border 
generally appear unlikely to contribute significantly to nonattainment 
in another state. The Idaho submittal indicates that the largest 
sources of Pb emissions in Idaho emit well below 0.5 tons per year, and 
are located greater than two miles from the state border. As a result, 
the EPA believes that the Idaho submittal provides a reasonable basis 
to conclude that Idaho sources of Pb emissions do not contribute 
significantly to nonattainment in, or interfere with maintenance of the 
2008 Pb NAAQS in any other state. Therefore, we are proposing to 
approve the Idaho SIP as meeting the requirements of CAA section 
110(a)(2)(D)(i)(I) for the 2008 Pb NAAQS.
    The EPA believes that the CAA section 110(a)(2)(D)(i)(II) PSD sub-
element is satisfied where new major sources and major modifications in 
Idaho are subject to a SIP-approved PSD program that satisfactorily 
implements the 2008 Pb NAAQS. We most recently approved revisions to 
the Idaho PSD program on March 3, 2014 (79 FR 11711), updating the 
program for purposes of fine particulate matter NAAQS implementation in 
attainment and unclassifiable areas. On July 17, 2012 (77 FR 41916), we 
approved a revision to the Idaho SIP to provide authority to implement 
the PSD permitting program with respect to greenhouse gas emissions. 
The Idaho PSD program implements the 2008 Pb NAAQS and incorporates the 
Federal PSD program regulations at 40 CFR 52.21 by reference as of July 
1, 2012. We believe that our proposed approval of element 
110(a)(2)(D)(i)(II) is not affected by recent court vacaturs of Federal 
PSD implementing regulations. Please see our discussion at section 
110(a)(2)(C). Therefore, we are proposing to approve the Idaho SIP as 
meeting the requirements of CAA section 110(a)(2)(D)(i)(II) with 
regards to PSD for the 2008 Pb NAAQS.
    The EPA believes, as noted in the October 14, 2011 guidance, that 
with regard to the CAA section 110(a)(2)(D)(i)(II) visibility sub-
element, significant impacts from Pb emissions from stationary sources 
are expected to be limited to short distances from the source and most, 
if not all Pb stationary sources, are located at distances from Class I 
areas such that visibility impacts would be negligible. Although Pb can 
be a component of coarse and fine particles, Pb generally comprises a 
small fraction of coarse and fine particles. Furthermore, when 
evaluating the extent that Pb could impact visibility, Pb-related 
visibility impacts were found to be insignificant (e.g., less that 
0.10%).\18\ Where a state's regional haze SIP has been approved as 
meeting all current obligations, a state may rely upon those provisions 
in support of its demonstration that is satisfies the requirements of 
CAA section 110(a)(2)(D)(i)(II) as it relates to visibility.
---------------------------------------------------------------------------

    \18\ Analysis by Mark Schmidt, OAQPS. ``Ambient Pb's 
Contribution to Class 1 Area Visibility Impairment,'' November 7, 
2011.
---------------------------------------------------------------------------

    The Idaho submittal points to the Idaho regional haze SIP, 
submitted on October 25, 2010, which addresses visibility impacts 
across states within the region. On June 9, 2011, we approved a SIP 
revision which provides Idaho DEQ authority to address regional haze 
and to implement best available retrofit technology (BART) requirements 
(76 FR 33651). Subsequently on June 22, 2011, we approved portions of 
the Idaho regional haze SIP, including the requirements for BART (76 FR 
36329). We approved the remainder of the Idaho regional haze SIP on 
November 8, 2012 (77 FR 66929). The EPA is proposing to find that as a 
result of the prior approval of the Idaho regional haze SIP, the Idaho 
SIP contains adequate provisions to address 110(a)(2)(D)(i)(II) 
visibility requirements with respect to the 2008 Pb NAAQS.
    Interstate and International transport provisions: CAA section 
110(a)(2)(D)(ii) requires SIPs to include provisions insuring 
compliance with the applicable requirements of CAA sections 126 and 115 
(relating to interstate and international pollution abatement). 
Specifically, CAA section 126(a) requires new or modified major sources 
to notify neighboring states of potential impacts from the source.
    State submittal: The Idaho submittal references the Idaho SIP-
approved PSD program. The submittal also references IDAPA 58.01.01.209 
(procedures for issuing permits) which provides notice and comment 
procedures for various permit actions with regard to the public and to 
appropriate Federal, state, international, and local agencies.
    EPA analysis: We most recently approved revisions to the Idaho PSD 
program on March 3, 2014 (79 FR 11711), updating the program for 
purposes of fine particulate matter NAAQS implementation in attainment 
and unclassifiable areas. On July 17, 2012, the EPA approved a revision 
to the Idaho SIP to provide authority to implement the PSD permitting 
program with respect to greenhouse gas emissions (77 FR 41916). The 
Idaho PSD program implements the 2008 Pb NAAQS and incorporates the 
Federal PSD program regulations at 40 CFR 52.21 by reference as of July 
1, 2012. IDAPA 58.01.01.209 (procedures for issuing permits) includes 
required procedures for issuing permits for new sources, including 
procedures for public processes, and notice to appropriate Federal, 
state and local agencies, consistent with the requirements of the 
Federal PSD program. Idaho issues notice of its draft permits and 
neighboring states consistently receive copies of those drafts. The 
State also has no pending obligations under section 115 or 126(b) of 
the CAA. Therefore, we are proposing to approve the Idaho SIP as 
meeting the requirements of CAA section 110(a)(2)(D)(ii) for the 2008 
Pb NAAQS.

110(a)(2)(E): Adequate Resources

    CAA section 110(a)(2)(E) requires states to provide (i) necessary 
assurances that the state will have adequate personnel, funding, and 
authority under state law to carry out the SIP (and is not prohibited 
by any provision of Federal or state law from carrying out the SIP or 
portion thereof), (ii) requires that the state comply with the 
requirements respecting state boards under CAA section 128 and (iii) 
necessary assurances that, where the state has relied on a local or 
regional government, agency, or instrumentality for the implementation 
of any SIP provision, the state has responsibility for ensuring 
adequate implementation of such SIP provision.
    State submittal: The Idaho submittal refers to specific Idaho 
statutory authority including: Idaho Code 39-105, which lays out the 
powers and duties of Idaho DEQ's director; Idaho Code 39-106, which 
gives the Idaho DEQ Director authority to hire personnel to carry out 
duties of the department; Idaho Code 39-107, which establishes the 
State's Board of Environmental Quality; Idaho Code 39-107B which 
establishes the Department of Environmental Quality Fund to receive 
appropriated funds, transfers from the general fund, Federal grants, 
fees for services, permitting fees and other program income; and Idaho 
Code 39-129, which provides authority for Idaho DEQ to enter into 
binding agreements with local governments that are enforceable as 
orders.
    EPA analysis: We are proposing to find that the above-referenced

[[Page 16731]]

provisions provide Idaho DEQ with adequate authority to carry out SIP 
obligations with respect to the 2008 Pb NAAQS as required by CAA 
section 110(a)(2)(E)(i). With respect to CAA section 110(a)(2)(E)(ii), 
we previously approved a revision to the Idaho SIP for purposes of 
meeting CAA section 128 on October 24, 2013 (78 FR 63394). We are 
proposing to find that Idaho has provided necessary assurances that, 
where the State has relied on a local or regional government, agency, 
or instrumentality for the implementation of any SIP provision, the 
State has responsibility for ensuring adequate implementation of the 
SIP with regards to the 2008 Pb NAAQS as required by CAA section 
110(a)(2)(E)(iii). Therefore we are proposing to approve the Idaho SIP 
as meeting the requirements of CAA sections 110(a)(2)(E) for the 2008 
Pb NAAQS.

110(a)(2)(F): Stationary Source Monitoring System

    CAA section 110(a)(2)(F) requires (i) the installation, 
maintenance, and replacement of equipment, and the implementation of 
other necessary steps, by owners or operators of stationary sources to 
monitor emissions from such sources, (ii) periodic reports on the 
nature and amounts of emissions and emissions-related data from such 
sources, and (iii) correlation of such reports by the state agency with 
any emission limitations or standards established pursuant to the CAA, 
which reports shall be available at reasonable times for public 
inspection.
    State submittal: The Idaho submittal states that Idaho statutes and 
regulations provide DEQ with authority to monitor stationary source 
emissions for compliance purposes and make them available to the 
public. The submittal references the following regulatory provisions: 
IDAPA 58.01.01.121, which outlines the authority of Idaho DEQ to 
require monitoring, recordkeeping and periodic reporting related to 
source compliance; IDAPA 58.01.01.122, which provides Idaho DEQ 
authority to issue information orders and orders to conduct source 
emissions monitoring, record keeping, reporting and other requirements; 
and IDAPA 58.01.01.157, which outlines test methods and procedures for 
source testing and reporting to the Idaho DEQ.
    EPA analysis: The provisions cited by the Idaho submittal establish 
compliance requirements for sources subject to major and minor source 
permitting to monitor emissions, keep and report records, and collect 
ambient air monitoring data. The provisions cited by the submittal also 
provide Idaho DEQ authority to issue orders to collect additional 
information as needed for Idaho DEQ to ascertain compliance. In 
addition, IDAPA 58.01.01.211 (conditions for permits to construct) and 
58.01.01.405 (conditions for tier II operating permits) provide Idaho 
DEQ authority to establish permit conditions requiring instrumentation 
to monitor and record emissions data, and instrumentation for ambient 
monitoring to determine the effect emissions from the stationary source 
or facility may have, or are having, on the air quality in any area 
affected by the stationary source or facility. This information is made 
available to the public through public processes outlined at IDAPA 
58.01.01.209 (procedures for issuing permits) for permits to construct 
and 58.01.01.404 (procedures for issuing permits) for Tier II operating 
permits.
    Additionally, Idaho is required to submit emissions data to the EPA 
for purposes of the National Emissions Inventory (NEI). The NEI is the 
EPA's central repository for air emissions data. The EPA published the 
Air Emissions Reporting Rule (AERR) on December 5, 2008, which modified 
the requirements for collecting and reporting air emissions data (73 FR 
76539). The AERR shortened the time states had to report emissions data 
from 17 to 12 months, giving states one calendar year to submit 
emissions data. All states are required to submit a comprehensive 
emissions inventory every three years and report emissions for certain 
larger sources annually through the EPA's online Emissions Inventory 
System. States report emissions data for the six criteria pollutants 
and their associated precursors--nitrogen oxides, sulfur dioxide, 
ammonia, lead, carbon monoxide, particulate matter, and volatile 
organic compounds. Many states also voluntarily report emissions of 
hazardous air pollutants. The EPA compiles the emissions data, 
supplementing it where necessary, and releases it to the general public 
through the Web site http://www.epa.gov/ttn/chief/eiinformation.html.
    Based on the analysis above, we are proposing to approve the Idaho 
SIP as meeting the requirements of CAA section 110(a)(2)(F) for the 
2008 Pb NAAQS.

110(a)(2)(G): Emergency Episodes

    CAA section 110(a)(2)(G) requires states to provide for authority 
to address activities causing imminent and substantial endangerment to 
public health, including adequate contingency plans to implement the 
emergency episode provisions in their SIPs.
    State submittal: The Idaho submittal cites Idaho air quality laws 
and regulations which provide authority and rules for identifying air 
pollution emergency episode contingency plans and abatement strategies. 
Relevant sections include Idaho Code Section 39-112, which provides 
emergency order authority; and IDAPA 58.01.01.550-561, the air 
pollution emergency rules section in the Idaho SIP.
    EPA analysis: As noted in the October 14, 2011 guidance, based on 
the EPA's experience to date with the Pb NAAQS and designating Pb 
nonattainment areas, the EPA expects that an emergency episode 
associated with Pb emissions would be unlikely and, if it were to 
occur, would be the result of a malfunction or other emergency 
situation at a relatively large source of Pb. Accordingly, the EPA 
believes that the central components of a contingency plan would be to 
reduce emissions from the source at issue and public communication as 
needed. We note that 40 CFR part 51, subpart H (51.150-51.152) and 40 
CFR part 51, Appendix L do not apply to Pb.0
    Section 303 of the CAA provides authority to the EPA Administrator 
to restrain any source from causing or contribution to emissions which 
present an ``imminent and substantial endangerment to public health or 
welfare, or the environment.'' We find that Idaho Code Section 112 
provides the Idaho DEQ Director with comparable authority.
    The Idaho air pollution emergency rules at IDAPA 58.01.01.550-561 
were previously approved by the EPA on January 16, 2003 (68 FR 2217). 
In addition, the EPA approved IDAPA 58.01.01.562 (specific emergency 
episode abatement plans for point sources) on January 16, 2003 (68 FR 
2217). This provision requires that specific point sources adopt and 
implement their own emergency episode abatement plans in accordance 
with the criteria set forth in IDAPA 58.01.01.551 through 556. 
Accordingly, we are proposing to approve the Idaho SIP as meeting the 
requirements of CAA section 110(a)(2)(G) for the 2008 Pb NAAQS.

110(a)(2)(H): Future SIP Revisions

    CAA section 110(a)(2)(H) requires that SIPs provide for revision of 
such plan (i) from time to time as may be necessary to take account of 
revisions of such national primary or secondary ambient air quality 
standard or the availability of improved or more expeditious methods of 
attaining such standard, and (ii), except as provided in paragraph 
110(a)(3)(C), whenever the

[[Page 16732]]

Administrator finds on the basis of information available to the 
Administrator that the SIP is substantially inadequate to attain the 
NAAQS which it implements or to otherwise comply with any additional 
requirements under the CAA.
    State submittal: The Idaho submittal refers to Idaho Code Section 
39-105(2) and (3)(d) which provides Idaho DEQ with authority to revise 
rules, in accordance with Idaho administrative procedures for 
rulemaking, to meet national ambient air quality standards as 
incorporated by reference in IDAPA 58.01.01.107. The submittal also 
refers to provisions at IDAPA 58.01.01.575-.587, which include area 
classifications, designations, PSD classifications, and references to 
the State's incorporation by reference of the Federal NAAQS and Federal 
PSD increments.
    EPA analysis: We find that Idaho has adequate authority to 
regularly update the SIP to take into account revisions of the NAAQS 
and other related regulatory changes. In practice, the State regularly 
submits SIP revisions to the EPA to revise the SIP for recent Federal 
regulatory changes. We most recently approved revisions to the Idaho 
SIP on March 3, 2014 (79 FR 11711), April 3, 2013 (78 FR 20001), and 
March 19, 2013 (78 FR 16790). Accordingly, we are proposing to approve 
the Idaho SIP as meeting the requirements of CAA section 110(a)(2)(H) 
for the 2008 Pb NAAQS.

110(a)(2)(I): Nonattainment Area Plan Revision Under Part D

    There are two elements identified in CAA section 110(a)(2) not 
governed by the three-year submission deadline of CAA section 110(a)(1) 
because SIPs incorporating necessary local nonattainment area controls 
are not due within three years after promulgation of a new or revised 
NAAQS, but are rather due at the time of the nonattainment area plan 
requirements pursuant to section 172 and the various pollutant specific 
subparts 2-5 of part D. These requirements are: (i) Submissions 
required by CAA section 110(a)(2)(C) to the extent that subsection 
refers to a permit program as required in part D, title I of the CAA, 
and (ii) submissions required by section 110(a)(2)(I) which pertain to 
the nonattainment planning requirements of part D, title I of the CAA. 
As a result, this action does not address infrastructure elements 
related to CAA section 110(a)(2)(C) with respect to nonattainment NSR 
or CAA section 110(a)(2)(I).

110(a)(2)(J): Consultation With Government Officials

    CAA section 110(a)(2)(J) requires states to provide a process for 
consultation with local governments and Federal Land Managers carrying 
out NAAQS implementation requirements pursuant to CAA section 121. CAA 
section 110(a)(2)(J) further requires states to notify the public if 
NAAQS are exceeded in an area and to enhance public awareness of 
measures that can be taken to prevent exceedances. Lastly, CAA section 
110(a)(2)(J) requires states to meet applicable requirements of Part C, 
title I of the CAA related to prevention of significant deterioration 
and visibility protection.
    State submittal: The Idaho submittal refers to laws and regulations 
relating to authority to carry out the PSD part C requirements and the 
consultation process and notification to the public, the EPA and 
Federal Land Managers. Specific provisions referenced include IDAPA 
58.01.01.209, 364, and 404 which provide for public processes for SIPs 
and permitting under IDAPA 58.01.01.200-223 (permit to construct 
rules); Idaho Code 39-129 which provides Idaho DEQ authority to enter 
into agreements with local governments; Idaho Code 39-105.03(c) which 
promotes outreach with local governments; IDAPA 58.01.01.563-574 
(transportation conformity); IDAPA 58.01.23.800-860 (rulemaking); and 
IDAPA 58.01.01.667 (regional haze). In addition, the Idaho submittal 
states that Idaho DEQ submits information to the EPA's AIRNOW program 
and provides daily air quality index scores for locations throughout 
the state on the Web site at http://www.deq.idaho.gov/air/aqindex.cfm.
    EPA analysis: The Idaho SIP includes specific provisions for 
consulting with local governments and Federal Land Managers as 
specified in CAA section 121, including the Idaho rules for major 
source PSD permitting. The EPA most recently approved Idaho permitting 
rules at IDAPA 58.01.01.209 and 58.01.01.404, which provide opportunity 
and procedures for public comment and notice to appropriate Federal, 
state and local agencies, on November 26, 2010 (75 FR 47530) and 
January 16, 2003 (68 FR 2217) respectively. We most recently approved 
the Idaho rules that define transportation conformity consultation on 
April 12, 2001 (66 FR 18873). While transportation conformity 
requirements do not apply for Pb because of the nature of the standard, 
the consultation procedures that Idaho has in place to implement 
transportation conformity requirements provides evidence of the State's 
ability to consult with other governmental agencies on air quality 
issues.
    In practice, Idaho DEQ routinely coordinates with local 
governments, states, Federal Land Managers and other stakeholders on 
air quality issues including permitting action, transportation 
conformity, and regional haze. Therefore, we are proposing to find that 
the Idaho SIP meets the requirements of CAA section 110(a)(2)(J) for 
consultation with government officials for the 2008 Pb NAAQS.
    Section 110(a)(2)(J) also requires the public be notified if NAAQS 
are exceeded in an area and to enhance public awareness of measures 
that can be taken to prevent exceedances. The EPA calculates an air 
quality index for five major air pollutants regulated by the CAA: 
ground-level ozone, particulate matter, carbon monoxide, sulfur 
dioxide, and nitrogen dioxide. This air quality index provides daily 
information to the public on air quality. While Pb is not specifically 
part of the air quality index, we note that Idaho actively participates 
and submits information to the EPA's AIRNOW and Enviroflash Air Quality 
Alert programs which provide information to the public on the air 
quality in their locale. In addition, Idaho provides air quality 
reports and forecasts to the public on the Idaho DEQ Web site at http://www.deq.idaho.gov/air-quality/monitoring/daily-reports-and-forecasts.aspx, as well as measures that can be taken to prevent 
exceedances.
    Idaho provides the State's annual network monitoring plan, annual 
air quality monitoring data summaries, and a map of the state air 
monitoring network to the public on their Web site at http://www.deq.idaho.gov/air-quality/monitoring/monitoring-network.aspx. The 
monitoring plans and data summaries include information on Pb 
monitoring. In addition, the Idaho SIP provides authority at IDAPA 
58.01.01.557 through 560 for notifying the public when air quality is 
degrading, as determined by the Director of Idaho DEQ, and that the 
Director will utilize appropriate news media to insure that information 
is announced to the public about the definition of the extent of the 
problem, the action taken by the Director, the air pollution forecast 
for the next few days, notice of when the next statement from DEQ will 
be issued, a listing of all general procedures which the public, 
commercial, institution and industrial sectors are required to follow, 
and specific warnings and advice to those persons who because of acute 
or chronic health problems may be most

[[Page 16733]]

susceptible. Therefore, we are proposing to find that the Idaho SIP 
meets the requirements of CAA section 110(a)(2)(J) for public 
notification for the 2008 Pb NAAQS.
    Turning to the requirement in CAA section 110(a)(2)(J) that the SIP 
meet the applicable requirements of part C of title I of the CAA, we 
have evaluated this requirement in the context of CAA section 
110(a)(2)(C) with respect to permitting. The EPA most recently approved 
revisions to Idaho's PSD program on March 3, 2014 (79 FR 11711), 
updating the program for purposes of fine particulate matter NAAQS 
implementation in attainment and unclassifiable areas. On July 17, 2012 
(77 FR 41916), we approved a revision to the Idaho SIP to provide 
authority to implement the PSD permitting program with respect to 
greenhouse gas emissions. The State's PSD program implements the 2008 
Pb NAAQS and incorporates the Federal PSD program regulations at 40 CFR 
52.21 by reference as of July 1, 2012. We believe that our proposed 
approval of element 110(a)(2)(J) is not affected by recent court 
vacaturs of Federal PSD implementing regulations. Please see our 
discussion at section 110(a)(2)(C). Therefore, we are proposing to 
approve the Idaho SIP as meeting the requirements of CAA 110(a)(2)(J) 
with regards to PSD for the 2008 Pb NAAQS.
    With regard to the applicable requirements for visibility 
protection, the EPA recognizes that states are subject to visibility 
and regional haze program requirements under part C of the CAA. In the 
event of the establishment of a new NAAQS, however, the visibility and 
regional haze program requirements under part C do not change. Thus we 
find that there is no new applicable requirement relating to visibility 
triggered under CAA section 110(a)(2)(J) when a new NAAQS becomes 
effective.
    Based on the above analysis, we are proposing to approve the Idaho 
SIP as meeting the requirements of CAA section 110(a)(2)(J) for the 
2008 Pb NAAQS.

110(a)(2)(K): Air Quality and Modeling/Data

    CAA section 110(a)(2)(K) requires that SIPs provide for (i) the 
performance of such air quality modeling as the Administrator may 
prescribe for the purpose of predicting the effect on ambient air 
quality of any emissions of any air pollutant for which the 
Administrator has established a national ambient air quality standard, 
and (ii) the submission, upon request, of data related to such air 
quality modeling to the Administrator.
    State submittal: The Idaho submittal states that air quality 
modeling is conducted during development of revisions to the SIP, as 
appropriate for the State to demonstrate attainment with required air 
quality standards. Modeling is also addressed in the permitting process 
(see discussion at CAA section 110(a)(2)(A) above). Estimates of 
ambient concentrations are based on air quality models, data bases and 
other requirements specified in 40 CFR part 51, Appendix W (Guidelines 
on Air Quality Models) and incorporated by reference at IDAPA 
58.01.01.107.
    EPA analysis: The EPA most recently approved IDAPA 58.01.01.107, 
which incorporates by reference the following EPA regulations: 
Requirements for Preparation, Adoption, and Submittal of Implementation 
Plans, 40 CFR part 51; National Primary and Secondary Ambient Air 
Quality Standards, 40 CFR part 50; Approval and Promulgation of 
Implementation Plans, 40 CFR part 52; Ambient Air Monitoring Reference 
and Equivalent Methods, 40 CFR part 53; and Ambient Air Quality 
Surveillance, 40 CFR part 58 revised as of July 1, 2012, on March 3, 
2014 (79 FR 11711). Idaho has incorporated by reference the 2008 Pb 
NAAQS into State regulations. While Idaho has no nonattainment areas 
for the 2008 Pb NAAQS, the State has submitted modeling data to EPA 
related to other pollutants. For example, Idaho submitted to the EPA 
the PM10 Maintenance Plan for Northern Ada County/Boise 
Idaho Area which contained air quality modeling data. We approved the 
maintenance plan as a SIP revision on October 27, 2003 (68 FR 61106). 
Therefore, we are proposing to approve the Idaho SIP as meeting the 
requirements of CAA section 110(a)(2)(K) for the 2008 Pb NAAQS.

110(a)(2)(L): Permitting Fees

    CAA section 110(a)(2)(L) requires SIPs to require each major 
stationary source to pay permitting fees to cover the cost of 
reviewing, approving, implementing and enforcing a permit.
    State submittal: The State submittal references the regulatory 
requirements for annual registration of title V sources through the 
Idaho Tier I permitting program and the annual assessment and payment 
of fees to support the Tier I permitting program.
    EPA analysis: The EPA approved the Idaho title V program on October 
4, 2001 (66 FR 50574) with an effective date of November 5, 2001. While 
the State's operating permit program is not formally approved into the 
State SIP, it is a legal mechanism the state can use to ensure that 
Idaho DEQ has sufficient resources to support the air program, 
consistent with the requirements of the SIP. Before the EPA can grant 
full approval, a state must demonstrate the ability to collect adequate 
fees. The Idaho title V program included a demonstration that fees were 
adequate, and the State will collect a fee from title V sources above 
the presumptive minimum in accordance with 40 CFR 70.9(b)(2)(i). In 
addition, Idaho regulations require fees for purposes of major and 
minor NSR permitting, as specified in IDAPA 58.01.01.224 through 227. 
Therefore, we are proposing to conclude that Idaho has satisfied the 
requirements of CAA section 110(a)(2)(L) for the 2008 Pb NAAQS.

110(a)(2)(M): Consultation/Participation by Affected Local Entities

    CAA section 110(a)(2)(M) requires states to provide for 
consultation and participation in SIP development by local political 
subdivisions affected by the SIP.
    State submittal: The Idaho submittal states that Idaho DEQ follows 
the consultation and participation process outlined in 40 CFR 51.102 
and incorporates 40 CFR part 51 by reference at IDAPA 58.01.01.107. The 
submittal also references the following regulations: IDAPA 
58.01.01.209, which provides for public comment and notice related to 
proposed actions on permit applications to construct; IDAPA 
58.01.01.404, which provides for public comment and notice on actions 
related to Tier II operating permits; and IDAPA 58.01.01.563-574, which 
provides for transportation conformity consultation process and 
procedures.
    EPA analysis: We most recently approved IDAPA 58.01.01.107, which 
incorporates by reference EPA regulations at 40 CFR part 51--
Requirements for Preparation, Adoption, and Submittal of Implementation 
Plans on March 3, 2014 (79 FR 11711). In addition, we most recently 
approved Idaho permitting rules at IDAPA 58.01.01.209 and 58.01.01.404 
which provide opportunity and procedures for public comment and notice 
to appropriate Federal, state and local agencies on November 26, 2010 
(75 FR 47530) and January 16, 2003 (68 FR 2217) respectively. Finally, 
we approved the State rules that define transportation conformity 
consultation on April 12, 2001 (66 FR 18873). While transportation 
conformity requirements do not apply for Pb because of the nature of 
the standard, the consultation procedures that Idaho has in place to

[[Page 16734]]

implement transportation conformity requirements provides evidence of 
the State's ability to consult with other governmental agencies on air 
quality issues.
    Based on the analysis above, we are proposing to approve the Idaho 
SIP as meeting the requirements of CAA section 110(a)(2)(M) for the 
2008 Pb NAAQS.

V. Proposed Action

    The EPA is proposing to approve the February 14, 2012, submittal 
from the State of Idaho to demonstrate that the SIP meets the 
requirements of sections 110(a)(1) and (2) of the CAA for the Pb NAAQS 
promulgated on October 15, 2008. Specifically, we are proposing to find 
that the Idaho SIP meets the following CAA section 110(a)(2) 
infrastructure elements for the 2008 Pb NAAQS: (A), (B), (C), (D), (E), 
(F), (G), (H), (J), (K), (L), and (M).

VI. Statutory and Executive Order Reviews

    Under the CAA, the Administrator is required to approve a SIP 
submission that complies with the provisions of the Act and applicable 
Federal regulations. 42 U.S.C. 7410(k); 40 CFR 52.02(a). Thus, in 
reviewing SIP submissions, the EPA's role is to approve state choices, 
provided that they meet the criteria of the CAA. Accordingly, this 
proposed action merely approves the state's law as meeting Federal 
requirements and does not impose additional requirements beyond those 
imposed by the state's law. For that reason, this proposed action:
     Is not a ``significant regulatory action'' subject to 
review by the Office of Management and Budget under Executive Order 
12866 (58 FR 51735, October 4, 1993);
     does not impose an information collection burden under the 
provisions of the Paperwork Reduction Act (44 U.S.C. 3501 et seq.);
     is certified as not having a significant economic impact 
on a substantial number of small entities under the Regulatory 
Flexibility Act (5 U.S.C. 601 et seq.);
     does not contain any unfunded mandate or significantly or 
uniquely affect small governments, as described in the Unfunded 
Mandates Reform Act of 1995 (Pub. L. 104-4);
     does not have Federalism implications as specified in 
Executive Order 13132 (64 FR 43255, August 10, 1999);
     is not an economically significant regulatory action based 
on health or safety risks subject to Executive Order 13045 (62 FR 
19885, April 23, 1997);
     is not a significant regulatory action subject to 
Executive Order 13211 (66 FR 28355, May 22, 2001);
     is not subject to the requirements of Section 12(d) of the 
National Technology Transfer and Advancement Act of 1995 (15 U.S.C. 272 
note) because this action does not involve technical standards; and
     does not provide the EPA with the discretionary authority 
to address, as appropriate, disproportionate human health or 
environmental effects, using practicable and legally permissible 
methods, under Executive Order 12898 (59 FR 7629, February 16, 1994).
    In addition, this rule does not have tribal implications as 
specified by Executive Order 13175 (65 FR 67249, November 9, 2000), 
because the SIP is not approved to apply in Indian country located in 
the State, and the EPA notes that it will not impose substantial direct 
costs on tribal governments or preempt tribal law.

List of Subjects in 40 CFR Part 52

    Environmental protection, Air pollution control, Incorporation by 
reference, Intergovernmental relations, Lead, Particulate matter, and 
Reporting and recordkeeping requirements.

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

    Dated: March 13, 2014.
Dennis J. McLerran,
Regional Administrator, Region 10.
[FR Doc. 2014-06666 Filed 3-25-14; 8:45 am]
BILLING CODE 6560-50-P