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**ENVIRONMENTAL PROTECTION**
**AGENCY**

**40 CFR Part 52**

**[EPA–R03–OAR–2014–0910; FRL–9922–43– Region 3]** 

**Approval and Promulgation of Air Quality Implementation Plans;**  **Pennsylvania; Infrastructure Requirements for the 2008 Ozone, 2010**  **Nitrogen Dioxide, 2010 Sulfur Dioxide,**

**and 2012 Fine Particulate Matter National Ambient Air Quality** 
**Standards**

**AGENCY :**  Environmental Protection Agency.

**ACTION :**  Proposed rule.

**SUMMARY :**  The Environmental Protection Agency (EPA) is proposing to approve portions of four State Implementation Plan (SIP) revision submittals from the Commonwealth of Pennsylvania pursuant to the Clean Air Act (CAA).
Whenever new or revised national ambient air quality standards (NAAQS) are promulgated, the CAA requires states to submit a plan for the implementation, maintenance, and enforcement of such NAAQS. The plan is required to address basic program elements, including, but not limited to, regulatory structure, monitoring, modeling, legal authority, and adequate resources necessary to assure attainment
and maintenance of the standards.
These elements are referred to as infrastructure requirements. Pennsylvania has made four separate submittals addressing the infrastructure requirements for the 2008 ozone, the 2010 nitrogen dioxide (NO 2), the 2010 sulfur dioxide (SO 2), and the 2012 fine particulate matter (PM2.5 ) NAAQS. In this rulemaking action, EPA is proposing to approve, in accordance with the requirements of the CAA, the
four infrastructure SIP submissions with the exception of some portions of the submittals addressing visibility protection.

**DATES :**  Written comments must be received on or before March 9, 2015.

**ADDRESSES :**  Submit your comments, identified by Docket ID Number EPA– R03–OAR–2014–0910 by one of the following methods:

A. www.regulations.gov. Follow the on-line instructions for submitting

comments.

B. Email: fernandez.cristina@epa.gov.

C. Mail: EPA–R03–OAR–2014–0910, Cristina Fernandez, Associate Director, Office of Air Program Planning, Mailcode 3AP30, U.S. Environmental Protection Agency, Region III, 1650 Arch Street, Philadelphia, Pennsylvania

19103.

D. Hand Delivery: At the previouslylisted EPA Region III address. Such deliveries are only accepted during the Docket’s normal hours of operation, and special arrangements should be made
for deliveries of boxed information.

Instructions: Direct your comments to
Docket ID No. EPA–R03–OAR–2014– 0910. 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 whose disclosure is restricted by statute. Do not submit information that you
consider to be CBI or otherwise protected through www.regulations.gov
or email. The www.regulations.gov Web site is an ‘‘anonymous access’’ system, which means 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 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, 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 EPA cannot read your
comment due to technical difficulties and cannot contact you for clarification, 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
electronic docket are listed in the www.regulations.gov index. Although listed in the index, some information is not publicly available, i.e., CBI or other
information whose disclosure 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 form. Publicly available docket
materials are available either electronically in www.regulations.gov or in hard copy during normal business hours at the Air Protection Division, U.S. Environmental Protection Agency, Region III, 1650 Arch Street, Philadelphia, Pennsylvania 19103. Copies of the State submittals are available at the Pennsylvania Department of Environmental Protection, Bureau of Air Quality Control, P.O. Box 8468, 400 Market Street, Harrisburg, Pennsylvania 17105.

**FOR FURTHER INFORMATION CONTACT :**  Ruth Knapp (215) 814–2191, or by email

at knapp.ruth@epa.gov.

**SUPPLEMENTARY INFORMATION :** 
I. Background

On March 27, 2008 (73 FR 16436), EPA promulgated a revised NAAQS for ozone based on 8-hour average
concentrations. EPA revised the level of the 8-hour ozone NAAQS from 0.08 parts per million (ppm) to 0.075 ppm. On February 9, 2010 (75 FR 6474), EPA established a new 1-hour primary NAAQS for NO 2 at a level of 100 parts per billion (ppb), based on a 3-year average of the 98th percentile of the yearly distribution of 1-hour daily maximum concentrations. On June 22, 2010 (75 FR 35520), EPA promulgated a revised NAAQS for SO 2 at a level of 75 ppb, based on a 3-year average of the annual 99th percentile of 1-hour daily
maximum concentrations. On December 14, 2012, EPA promulgated a revised primary NAAQS for PM2.5 for the
annual standard. The revised standard was set at the level of 12 micrograms per cubic meter (ug/m 3 ) calculated as the annual average which is averaged over a three year period. This specific NAAQS will be referred to as the 2012

PM 2.5 NAAQS.

Pursuant to section 110(a)(1) of the CAA, states are required to submit SIPs meeting the applicable requirements of section 110(a)(2) within three years after promulgation of a new or revised NAAQS or within such shorter period as EPA may prescribe. Section 110(a)(2) requires states to address basic SIP elements such as requirements for monitoring, basic program requirements, and legal authority that are designed to assure attainment and maintenance of the NAAQS. Section 110(a) imposes the obligation upon
states to make a SIP submission to EPA for a new or revised NAAQS, but the contents of that submission may vary depending upon the facts and circumstances. In particular, the data and analytical tools available at the time the state develops and submits the SIP for a new or revised NAAQS affects the
content of the submission. The content of such SIP submission may also vary depending upon what provisions the state’s existing SIP already contains.

More specifically, section 110(a)(1) provides the procedural and timing requirements for SIPs. Section 110(a)(2) lists specific elements that states must
meet for ‘‘infrastructure’’ SIP requirements related to a newly


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1 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. 2 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 NO X 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)).

3 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. established or revised NAAQS. As mentioned earlier, these requirements
include basic SIP elements such as requirements for monitoring, basic program requirements, and legal authority that are designed to assure
attainment and maintenance of the NAAQS.

II. Summary of State Submittals

The Commonwealth of Pennsylvania through the Pennsylvania Department of Environmental Protection (PADEP) submitted four separate revisions to its SIP to satisfy the requirements of section 110(a)(2) of the CAA for the different NAAQS. On July 15, 2014,
PADEP submitted SIP revisions addressing the infrastructure requirements for the 2008 ozone, 2010

NO 2 , 2010 SO 2 as well as the 2012 PM2.5 NAAQS. Each of the infrastructure SIP revisions addressed the following
infrastructure elements for the applicable NAAQS which EPA is proposing to approve: Section 110(a)(2)(A), (B), (C), (D)(i)(II) (prevention of significant deterioration(PSD)), (D)(ii), (E), (F), (G), (H), (J), (K), (L), and (M). The four
infrastructure SIP submittals do not address section 110(a)(2)(D)(i)(I), which pertains to interstate transport of emissions, nor section 110(a)(2)(I), which pertains to the nonattainment requirements of part D, Title I of the CAA, because this element, section 110(a)(2)(I), is not required to be submitted by the 3 year submission deadline of CAA section 110(a)(1) and will be addressed in a separate process, if necessary for the respective NAAQS. The Pennsylvania infrastructure SIP submittals included provisions addressing section 110(a)(2)(D)(i)(II) (visibility protection). However, EPA is not taking action on the portion of the SIP submittals addressing 110(a)(2)(D)(i)(II) (visibility protection) at this time and will take later separate action on the portion of the infrastructure SIP submittals addressing this element for the four NAAQS.

III. EPA’s Approach To Review
Infrastructure SIPs

EPA is acting upon the
Commonwealth’s SIP submissions that address the infrastructure requirements of section 110(a)(1) and (2) of the CAA for the 2008 ozone, the 2010 NO 2 , the

2010 SO 2 , and the 2012 PM2.5 NAAQS. The requirement for states to make a SIP submission of this type arises out of 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 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.

EPA has historically referred to these SIP submissions made for the purpose of satisfying the requirements of section 110(a)(1) and (2) as ‘‘infrastructure SIP’’ submissions. Although the term ‘‘infrastructure SIP’’ does not appear in the CAA, 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 EPA rule to address the visibility protection requirements of section 169A of the CAA, 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. 1 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, 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.

The following examples of ambiguities illustrate the need for 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 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. 2 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 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. 3 This ambiguity illustrates that rather than apply all the stated requirements of section 110(a)(2) in a strict literal sense, EPA must determine which provisions of section 110(a)(2) are applicable for a particular
infrastructure SIP submission.

Another example of ambiguity within section 110(a)(1) and (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 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, 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


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4 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) (EPA’s final action approving the structural PSD elements of the New Mexico SIP submitted by the State separately to meet the requirements of EPA’s 2008 PM 2.5 NSR rule), and ‘‘Approval and Promulgation of Air Quality Implementation Plans; New Mexico; Infrastructure and Interstate Transport Requirements for the 2006 PM 2.5 NAAQS,’’ 78 FR 4337 (January 22, 2013) (EPA’s final action on the

infrastructure SIP for the 2006 PM 2.5 NAAQS).

5 On December 14, 2007, the State of Tennessee, through the Tennessee Department of Environment and Conservation, made a SIP revision to EPA demonstrating that the State meets the requirements of sections 110(a)(1) and (2). 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), EPA took separate proposed and final actions on all other section 110(a)(2) infrastructure SIP elements of Tennessee’s December 14, 2007

submittal.

6 For example, implementation of the 1997 PM 2.5 NAAQS required the deployment of a system of

new monitors to measure ambient levels of that new indicator species for the new NAAQS. 7 EPA notes, however, that nothing in the CAA requires 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 EPA provides guidance or regulations pertaining to such submissions. EPA elects to issue such guidance in order to assist states, as appropriate. 8 ‘‘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.

9 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). EPA issued the guidance shortly after the U.S. Supreme Court agreed to review the

DC Circuit decision in EME Homer City, 696 F.3d 7 (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, 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 EPA elects to provide guidance on a particular section has no impact on a state’s CAA obligations. infrastructure SIP requirements, EPA
can elect to act on such submissions either individually or in a larger
combined action. 4 Similarly, 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, EPA has
sometimes elected to act at different
times on various elements and subelements of the same infrastructure SIP
submission. 5

Ambiguities within section 110(a)(1) and (2) may also arise with respect to
infrastructure SIP submission requirements for different NAAQS. Thus, 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, 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. 6

EPA notes that interpretation of section 110(a)(2) is also necessary when EPA reviews other types of SIP submissions required under the CAA. Therefore, as with infrastructure SIP submissions, 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 attainment plan SIP submissions required by part D to meet the ‘‘applicable requirements’’ of section 110(a)(2); thus, 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), 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, 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, 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, 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. 7 EPA most recently issued guidance for infrastructure SIPs on September 13, 2013 (2013 Guidance). 8 EPA developed thisdocument to provide states with up-todate guidance for infrastructure SIPs for any new or revised NAAQS. Within this guidance, 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. EPA also made recommendations about many specific subsections of section 110(a)(2) that are
relevant in the context of infrastructure
SIP submissions. 9 The guidance also discusses the substantively important issues that are germane to certain subsections of section 110(a)(2). EPA interprets section 110(a)(1) and (2) such
that infrastructure SIP submissions need
to address certain issues and need not address others. Accordingly, EPA
reviews each infrastructure SIP submission for compliance with the applicable statutory provisions of section 110(a)(2), as appropriate.

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, 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 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


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10 By contrast, 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 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. 11 For example, 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).

12 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). EPA has previously used its authority under section 110(k)(6) of the CAA 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). Section 128 are necessarily included in
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, EPA’s review of
infrastructure SIP submissions with respect to the PSD program requirements in section 110(a)(2)(C), (D)(i)(II), and (J) focuses upon the structural PSD program requirements contained in part C and EPA’s PSD regulations. Structural PSD program requirements include provisions necessary for the PSD program to address all regulated sources and NSR pollutants, including Green House Gases (GHGs). By contrast, structural PSD program requirements do not include provisions that are not required under 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

PM 2.5 NAAQS. Accordingly, the latter optional provisions are types of provisions EPA considers irrelevant in
the context of an infrastructure SIP

action.

For other section 110(a)(2) elements, however, 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, 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, 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,
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 (SSM) that may be contrary to the CAA and EPA’s policies addressing such excess emissions; (ii) existing provisions
related to ‘‘director’s variance’’ or ‘‘director’s discretion’’ that may be contrary to the CAA because theypurport to allow revisions to SIPapproved emissions limits while limiting public process or not requiring further approval by EPA; and (iii) existing provisions for PSD programs that may be inconsistent with current requirements of EPA’s ‘‘Final NSR Improvement Rule,’’ 67 FR 80186 (December 31, 2002), as amended by 72 FR 32526 (June 13, 2007) (NSR Reform). Thus, 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. 10 It is important to note that 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.

EPA’s approach to review of
infrastructure SIP submissions is to identify the CAA requirements that are logically applicable to that submission. 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 section 110(a)(2) as requiring review of each and every provision of a state’s existing SIP against all requirements in the CAA and 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 EPA evaluates adequacy of the infrastructure
SIP submission. EPA believes that a better approach is for states and 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, 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, EPA believes that its approach with respect to infrastructure SIP requirements is based on a reasonable reading of section 110(a)(1) and (2) because the CAA provides other
avenues and mechanisms to address specific substantive deficiencies in existing SIPs. These other statutory tools allow EPA to take appropriately tailored action, depending upon the nature and severity of the alleged SIP deficiency. Section 110(k)(5) authorizes EPA to issue a ‘‘SIP call’’ whenever the Agency
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. 11 Section 110(k)(6) authorizes EPA to correct errors in past actions, such as past approvals of SIP submissions. 12 Significantly, 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 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, EPA believes that section 110(a)(2)(A) may be


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13 See, e.g., 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 (January 26, 2011) (final disapproval of such provisions). among the statutory bases that EPA relies upon in the course of addressing such deficiency in a subsequent

action. 13

IV. Summary of EPA’s Rationale for Proposing Approval

In this rulemaking action, EPA is proposing approval of the
Commonwealth’s four infrastructure SIP submittals for the 2008 ozone, 2010

NO 2 , 2010 SO 2 , and 2012 PM 2.5 NAAQS as addressing requirements in section 110(a)(2)(A), (B), (C), (D)(i)(II) (prevention of significant deterioration), (D)(ii), (E), (F), (G), (H), (J), (K), (L), and (M) of the CAA. A detailed analysis of
EPA’s review and rationale for proposing to approve the four
infrastructure SIP submittals as addressing these CAA requirements may be found in the Technical Support Document (TSD) for this proposed rulemaking action which is available on
line at www.regulations.gov, Docket ID
Number EPA–R03–OAR–2014–0910. EPA is not taking rulemaking action at this time on the portion of the
infrastructure SIP submittals which address section 110(a)(2)(D)(i)(II) (visibility protection) for the four NAAQS. EPA will take later rulemaking action on these submittals regarding section 110(a)(2)(D)(i)(II) (visibility protection).

EPA is soliciting public comments on
the issues discussed in this document.
These comments will be considered before taking final action.

V. Proposed Action

EPA is proposing to approve the
Commonwealth’s infrastructure submittals dated July 15, 2014 for the 2008 ozone, the 2010 NO 2 , the 2010

SO 2 , and the 2012 PM2.5 NAAQS respectively, as meeting the requirements of section 110(a)(2) of the CAA, including specifically section 110(a)(2)(A), (B), (C), (D)(i)(II) (prevention of significant deterioration), (D)(ii), (E), (F), (G), (H), (J), (K), (L), and (M) for the four NAAQS with the exception of the requirements related to section 110(a)(2)(D)(i)(II) (visibility protection). The Commonwealth’s
infrastructure SIP submissions for the four NAAQS did not include provisions addressing CAA 110(a)(2)(D)(i)(I) and therefore EPA is not taking any action on section 110(a)(2)(D)(i)(I) for any of the four NAAQS. The Commonwealth’s
infrastructure SIP submissions for the four NAAQS also did not include provisions addressing section 110(a)(2)(I) for any nonattainment requirements of part D, Title I of the CAA, because this element is not required to be submitted by the 3 year
submission deadline of CAA section 110(a)(1). EPA is also not taking action at this time on the portions of the four
infrastructure SIP submittals intended to address section 110(a)(2)(D)(i)(II) (visibility protection). EPA will take later separate action on the portion of
the infrastructure SIP submittals addressing CAA section 110(a)(2)(D)(i)(II) (visibility protection) for the four NAAQS.

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 CAA and applicable Federal regulations. 42 U.S.C. 7410(k); 40 CFR 52.02(a). Thus, in reviewing SIP submissions, EPA’s role is to approve state choices, provided that they meet the criteria of the CAA. Accordingly, this action merely proposes to approve state law as meeting Federal requirements and does not impose additional requirements beyond those imposed by state 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 requirements of Section 12(d) of the National Technology Transfer and Advancement Act of 1995 (15 U.S.C. 272 note) because application of those requirements would be inconsistent with the CAA; and

• Does not provide 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 proposed rulemaking action, pertaining to Pennsylvania’s section 110(a)(2) infrastructure requirements for the 2008 ozone, the

2010 NO 2 , the 2010 SO 2 , and 2012 PM 2.5 NAAQS 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 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, Nitrogen dioxide, Ozone, Particulate matter, Reporting and recordkeeping requirements, Sulfur oxides, Volatile organic compounds.

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

Dated: January 13, 2015.
William C. Early,
Acting Regional Administrator, Region III.

[FR Doc. 2015–02482 Filed 2–5–15; 8:45 am]

**BILLING CODE 6560–50–P**

**ENVIRONMENTAL PROTECTION**
**AGENCY**

**40 CFR Part 63**

**[EPA–HQ–OAR–2014–0471 [FRL–9922–13– OAR]** 

**RIN 2060–AS26**

**Petition To Add n-Propyl Bromide to**

**the List of Hazardous Air Pollutants**

**AGENCY :**  Environmental Protection Agency.

**ACTION :**  Receipt of a complete petition.

**SUMMARY :**  The U.S. Environmental Protection Agency (EPA) is announcing the receipt of a complete petition requesting that the EPA add the chemical n-Propyl Bromide (nPB) (Chemical Abstract Service No. 106–94– 5) to the list of hazardous air pollutants (HAP) contained in section 112(b)(1) of the Clean Air Act (CAA). On October 28, 2010 and November 28, 2012, the Halogenated Solvent Industry Alliance (HSIA) submitted a petition to list nPB as a HAP and a supplement to the petition, respectively. In addition, on