83_FR_40113 83 FR 39957 - Air Plan Approval; Maine; Infrastructure State Implementation Plan Requirements for the 2012 PM2.5

83 FR 39957 - Air Plan Approval; Maine; Infrastructure State Implementation Plan Requirements for the 2012 PM2.5

ENVIRONMENTAL PROTECTION AGENCY

Federal Register Volume 83, Issue 156 (August 13, 2018)

Page Range39957-39970
FR Document2018-17247

The Environmental Protection Agency (EPA) is proposing to approve elements of a State Implementation Plan (SIP) submission from Maine that addresses the infrastructure requirements of the Clean Air Act (CAA or Act) for the 2012 fine particle (PM<INF>2.5</INF>) National Ambient Air Quality Standard (NAAQS). EPA is also proposing to conditionally approve one sub-element of Maine's infrastructure SIP. The infrastructure requirements are designed to ensure that the structural components of each state's air quality management program are adequate to meet the state's responsibilities with respect to this NAAQS under the CAA.

Federal Register, Volume 83 Issue 156 (Monday, August 13, 2018)
[Federal Register Volume 83, Number 156 (Monday, August 13, 2018)]
[Proposed Rules]
[Pages 39957-39970]
From the Federal Register Online  [www.thefederalregister.org]
[FR Doc No: 2018-17247]


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ENVIRONMENTAL PROTECTION AGENCY

40 CFR Part 52

[EPA-R01-OAR-2018-0138; FRL-9981-85-Region 1]


Air Plan Approval; Maine; Infrastructure State Implementation 
Plan Requirements for the 2012 PM2.5 NAAQS

AGENCY: Environmental Protection Agency (EPA).

ACTION: Proposed rule.

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SUMMARY: The Environmental Protection Agency (EPA) is proposing to 
approve elements of a State Implementation Plan (SIP) submission from 
Maine that addresses the infrastructure requirements of the Clean Air 
Act (CAA or Act) for the 2012 fine particle (PM2.5) National 
Ambient Air Quality Standard (NAAQS). EPA is also proposing to 
conditionally approve one sub-element of Maine's infrastructure SIP. 
The infrastructure requirements are designed to ensure that the 
structural components of each state's air quality management program 
are adequate to meet the state's responsibilities with respect to this 
NAAQS under the CAA.

DATES: Comments must be received on or before September 12, 2018.

ADDRESSES: Submit your comments, identified by Docket ID No. EPA-R01-
OAR-2018-0138 at https://www.regulations.gov, or via email to 
[email protected]. For comments submitted at Regulations.gov, follow 
the online instructions for submitting comments. Once submitted, 
comments cannot be edited or removed from Regulations.gov. For either 
manner of submission, the EPA may publish any comment received to its 
public docket. Do not submit electronically any information you 
consider to be Confidential Business Information (CBI) or other 
information whose disclosure is restricted by statute. Multimedia 
submissions (audio, video, etc.) must be accompanied by a written 
comment. The written comment is considered the official comment and 
should include discussion of all points you wish to make. The EPA will 
generally not consider comments or comment contents located outside of 
the primary submission (i.e. on the web, cloud, or other file sharing 
system). For additional submission methods, please contact the person 
identified in the For Further Information Contact section. For the full 
EPA public comment policy, information about CBI or multimedia 
submissions, and general guidance on making effective comments, please 
visit www.epa.gov/dockets/commenting-epa-dockets. Publicly available 
docket materials are available at https://www.regulations.gov or at the 
U.S. Environmental Protection Agency, EPA New England Regional Office, 
Office of Ecosystem Protection, Air Quality Planning Unit, 5 Post 
Office Square--Suite 100, Boston, MA. EPA requests that if at all 
possible, you contact the contact listed in the FOR FURTHER INFORMATION 
CONTACT section to schedule your inspection. The Regional Office's 
official hours of business are Monday through Friday, 8:30 a.m. to 4:30 
p.m., excluding legal holidays.

FOR FURTHER INFORMATION CONTACT: Alison C. Simcox, Air Quality Planning 
Unit, Air Programs Branch, U.S. Environmental Protection Agency, Region 
1, 5 Post Office Square, Suite 100 (Mail code OEP05-2), Boston, MA 
02109--3912, tel. (617) 918-1684; [email protected].

SUPPLEMENTARY INFORMATION: Throughout this document whenever ``we,'' 
``us,'' or ``our'' is used, we mean EPA.

Table of Contents

I. Background and Purpose
    A. What Maine SIP submission does this rulemaking address?
    B. What is the scope of this rulemaking?
II. What guidance is EPA using to evaluate this SIP submission?
III. EPA's Review
    A. Section 110(a)(2)(A)--Emission Limits and Other Control 
Measures
    B. Section 110(a)(2)(B)--Ambient Air Quality Monitoring/Data 
System
    C. Section 110(a)(2)(C)--Program for Enforcement of Control 
Measures and for Construction or Modification of Stationary Sources
    D. Section 110(a)(2)(D)--Interstate Transport
    E. Section 110(a)(2)(E)--Adequate Resources
    F. Section 110(a)(2)(F)--Stationary Source Monitoring System
    G. Section 110(a)(2)(G)--Emergency Powers
    H. Section 110(a)(2)(H)--Future SIP Revisions
    I. Section 110(a)(2)(I)--Nonattainment Area Plan or Plan 
Revisions Under Part D
    J. Section 110(a)(2)(J)--Consultation With Government Officials; 
Public Notifications; Prevention of Significant Deterioration; 
Visibility Protection
    K. Section 110(a)(2)(K)--Air Quality Modeling/Data
    L. Section 110(a)(2)(L)--Permitting Fees
    M. Section 110(a)(2)(M)--Consultation/Participation by Affected 
Local Entities
IV. Proposed Action
V. Statutory and Executive Order Reviews

I. Background and Purpose

A. What Maine SIP submission does this rulemaking address?

    This rulemaking addresses a July 6, 2016 submission from the Maine 
Department of Environmental Protection (Maine DEP) regarding the 
infrastructure SIP requirements of the CAA for the 2012 fine particle 
(PM2.5\1\) National Ambient Air Quality Standard (NAAQS). 
The primary, health-based annual standard is set at 12.0 micrograms per 
cubic meter ([micro]g/m\3\) and the 24-hour standard is set at 35 
[micro]g/m\3\. See 78 FR 3086. Under sections 110(a)(1) and (2) of the 
CAA, states are required to provide infrastructure SIP submissions to 
ensure that state SIPs provide for implementation, maintenance, and 
enforcement of the NAAQS, including the 2012 PM2.5 NAAQS. On 
March 1, 2018, Maine DEP submitted a letter providing clarifying 
information for several of its infrastructure SIP submittals. In a July 
17, 2018 email, Maine DEP asked EPA to apply this letter to the 
infrastructure SIP submittal for the 2012 PM2.5 NAAQS, as 
well. The information in the letter and email (both included in the 
docket for this rulemaking) is mainly applicable to Elements E, F, G, 
and K.
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    \1\ PM2.5 refers to particulate matter of 2.5 microns 
or less in diameter, often referred to as ``fine'' particles.

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[[Page 39958]]

B. What is the scope of this rulemaking?

    EPA is acting on a SIP submission from Maine DEP that addresses the 
infrastructure requirements of CAA sections 110(a)(1) and 110(a)(2) for 
the 2012 PM2.5 NAAQS.
    The requirement for states to make a SIP submission of this type 
arises out of CAA sections 110(a)(1) and 110(a)(2). Pursuant to these 
sections, each state must submit a SIP that provides for the 
implementation, maintenance, and enforcement of each primary or 
secondary NAAQS. States must make such SIP submission ``within 3 years 
(or such shorter period as the Administrator may prescribe) after the 
promulgation of a new or revised NAAQS.'' This requirement is triggered 
by the promulgation of a new or revised NAAQS and is not conditioned 
upon EPA's taking any other action. Section 110(a)(2) includes the 
specific elements that ``each such plan'' must address.
    EPA commonly refers to such 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, 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.
    This rulemaking will not cover three substantive areas that are not 
integral to acting on a state's infrastructure SIP submission: (i) 
Existing provisions related to excess emissions during periods of 
start-up, shutdown, or malfunction at sources (``SSM'' emissions) 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 purport to permit revisions to SIP-
approved emissions limits with limited public process or without 
requiring further approval by EPA, that may be contrary to the CAA 
(``director's discretion''); and, (iii) existing provisions for 
Prevention of Significant Deterioration (PSD) programs that may be 
inconsistent with current requirements of EPA's ``Final New Source 
Review (NSR) Improvement Rule,'' 67 FR 80186 (December 31, 2002), as 
amended by 72 FR 32526 (June 13, 2007) (``NSR Reform''). Instead, EPA 
has the authority to address each one of these substantive areas 
separately. A detailed history, interpretation, and rationale for EPA's 
approach to infrastructure SIP requirements can be found in EPA's May 
13, 2014, proposed rule entitled, ``Infrastructure SIP Requirements for 
the 2008 Lead NAAQS'' in the section, ``What is the scope of this 
rulemaking?'' See 79 FR 27241 at 27242-45.

II. What guidance is EPA using to evaluate this SIP submission?

    EPA highlighted the statutory requirement to submit infrastructure 
SIPs within 3 years of promulgation of a new NAAQS in an October 2, 
2007, guidance document entitled ``Guidance on SIP Elements Required 
Under Sections 110(a)(1) and (2) for the 1997 8-hour Ozone and 
PM2.5 National Ambient Air Quality Standards'' (2007 
guidance). EPA has issued additional guidance documents and memoranda, 
including a September 13, 2013, memorandum entitled ``Guidance on 
Infrastructure State Implementation Plan (SIP) Elements under Clean Air 
Act Sections 110(a)(1) and 110(a)(2)'' (2013 memorandum).\2\
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    \2\ This memorandum and other referenced guidance documents and 
memoranda are included in the docket for this action.
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    With respect to the ``Good Neighbor'' or interstate transport 
requirements for infrastructure SIPs, the most recent relevant EPA 
guidance is a memorandum published on March 17, 2016, entitled 
``Information on the Interstate Transport ``Good Neighbor'' Provision 
for the 2012 Fine Particulate Matter National Ambient Air Quality 
Standards under Clean Air Act Section 110(a)(2)(D)(i)(I)'' (2016 
memorandum). The 2016 memorandum describes EPA's past approach to 
addressing interstate transport, and provides EPA's general review of 
relevant modeling data and air quality projections as they relate to 
the 2012 annual PM2.5 NAAQS. The 2016 memorandum provides 
information relevant to EPA Regional office review of the CAA section 
110(a)(2)(D)(i)(I) ``Good Neighbor'' provision requirements in 
infrastructure SIPs with respect to the 2012 annual PM2.5 
NAAQS. This rulemaking considers information provided in that 
memorandum.

III. EPA's review

    EPA is soliciting comment on our evaluation of Maine's 
infrastructure SIP submission in this notice of proposed rulemaking. In 
Maine's submission, a detailed list of Maine Laws and previously SIP-
approved Air Quality Regulations show precisely how the various 
components of its EPA-approved SIP meet each of the requirements of 
section 110(a)(2) of the CAA for the 2012 PM2.5 NAAQS. The 
following review evaluates the state's submissions in light of section 
110(a)(2) requirements and relevant EPA guidance.

A. Section 110(a)(2)(A)--Emission Limits and Other Control Measures

    This section (also referred to in this action as an element) of the 
Act requires SIPs to include enforceable emission limits and other 
control measures, means or techniques, schedules for compliance, and 
other related matters. However, EPA has long interpreted emission 
limits and control measures for attaining the standards as being due 
when nonattainment planning requirements are due.\3\ In the context of 
an infrastructure SIP, EPA is not evaluating the existing SIP 
provisions for this purpose. Instead, EPA is only evaluating whether 
the state's SIP has basic structural provisions for the implementation 
of the NAAQS.
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    \3\ See, e.g., EPA's final rule on ``National Ambient Air 
Quality Standards for Lead.'' 73 FR 66964, 67034 (November 12, 
2008).
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    Maine's infrastructure submittal for this element cites Maine laws 
and regulations that include enforceable emission limitations and other 
control measures, means or techniques, as well as schedules and 
timetables for compliance to meet the applicable requirements of the 
CAA. Maine DEP statutory authority with respect to air quality is set 
out in Title 38 of the Maine Revised Statutes Annotated (``MRSA''), 
Chapter 4, ``Protection and Improvement of Air.'' Maine DEP's general 
authority to promulgate regulations is codified at 38 MRSA Chapter 2, 
Subchapter 1, ``Organization and Powers,'' \4\ and the authority to 
establish emission standards and regulations implementing ambient air 
quality standards is contained in 38 MRSA Chapter 4, sections 585 and 
585-A.
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    \4\ Maine DEP consists of the Board of Environmental Protection 
(``Board'') and a Commissioner. 38 MRSA Sec.  341-A(2). In general, 
the Board is authorized to promulgate ``major substantive rules'' 
and the Commissioner has rulemaking authority with respect to rules 
that are ``not designated as major substantive rules.'' Id. Sec.  
341-H.
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    The Maine submittal cites two dozen specific rules that the state 
has adopted to control the emissions of criteria pollutants and 
precursors, including PM2.5. A few of these rules, with 
their EPA-approval citation, are listed here: 06-096 Code of Maine 
Regulations (``CMR'') Chapter 102, ``Open Burning'' (73 FR 9459, 
February 21, 2008); Chapter 103, ``Fuel Burning Equipment

[[Page 39959]]

Particulate Emission Standard'' (50 FR 7770, February 26, 1985); 
Chapter 104, ``Incinerator Particulate Emission Standard'' (37 FR 
10842, May 31, 1972); and Chapter 150, ``Control of Emissions from 
Outdoor Wood Boilers'' (April 24, 2012). The Maine regulations listed 
above were previously approved into the Maine SIP by EPA. See 40 CFR 
52.1020.
    EPA proposes that Maine meets the infrastructure SIP requirements 
of section 110(a)(2)(A) with respect to the 2012 PM2.5 
NAAQS. As previously noted, EPA is not proposing to approve or 
disapprove any existing state provisions or rules related to SSM or 
director's discretion in the context of section 110(a)(2)(A).

B. Section 110(a)(2)(B)--Ambient Air Quality Monitoring/Data System

    This section requires SIPs to provide for establishment and 
operation of appropriate devices, methods, systems, and procedures 
necessary to monitor, compile, and analyze ambient air quality data, 
and make such data available to EPA upon request. Each year, states 
submit annual air monitoring network plans to EPA for review and 
approval. EPA's review of these annual monitoring plans includes our 
evaluation of whether the state: (i) Monitors air quality at 
appropriate locations throughout the state using EPA-approved Federal 
Reference Methods or Federal Equivalent Method monitors; (ii) submits 
data to EPA's Air Quality System (AQS) in a timely manner; and (iii) 
provides EPA Regional Offices with prior notification of any planned 
changes to monitoring sites or the network plan.
    Pursuant to authority granted to it by 38 MRSA Sec. Sec.  341-A(1) 
and 584-A, Maine DEP operates an air quality monitoring network, and 
EPA approved the state's most recent Annual Air Monitoring Network Plan 
for PM2.5 on August 23, 2017.\5\ Furthermore, Maine DEP 
populates AQS with air quality monitoring data in a timely manner, and 
provides EPA with prior notification when considering a change to its 
monitoring network or plan. EPA proposes that Maine DEP meets the 
infrastructure SIP requirements of section 110(a)(2)(B) with respect to 
the 2012 PM2.5 NAAQS.
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    \5\ See EPA approval letter located in the docket for this 
action.
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C. Section 110(a)(2)(C)--Program for Enforcement of Control Measures 
and for Construction or Modification of Stationary Sources

    States are required to include a program providing for enforcement 
of all SIP measures and the regulation of construction of new or 
modified stationary sources to meet NSR requirements under PSD and 
nonattainment new source review (NNSR) programs. Part C of the CAA 
(sections 160-169B) addresses PSD, while part D of the CAA (sections 
171-193) addresses NNSR requirements.
    The evaluation of each state's submission addressing the 
infrastructure SIP requirements of section 110(a)(2)(C) covers the 
following: (i) Enforcement of SIP measures; (ii) PSD program for major 
sources and major modifications; and (iii) a permit program for minor 
sources and minor modifications.
Sub-Element 1: Enforcement of SIP Measures
    Maine DEP identifies the sources of its authority to enforce the 
measures it cites to satisfy Element A (Emission limits and other 
control measures) as 38 MRSA Section 347-A, ``Violations,'' 38 MRSA 
Section 347-C, ``Right of inspection and entry,'' 38 MRSA Section 348, 
``Judicial Enforcement,'' 38 MRSA Section 349, ``Penalties,'' and 06-
096 CMR Chapter 115, ``Major and Minor Source Air Emission License 
Regulations,'' which include processes for both civil and criminal 
enforcement actions. Construction of new or modified stationary sources 
in Maine is regulated by 06-096 CMR Chapter 115, ``Major and Minor 
Source Air Emission License Regulations,'' which requires best 
available control technology (BACT) controls for PSD sources, including 
for PM2.5. EPA proposes that Maine has met the enforcement 
requirement of section 110(a)(2)(C) with respect to the 2012 
PM2.5 NAAQS.
Sub-Element 2: PSD Program for Major Sources and Major Modifications.
    Prevention of significant deterioration (PSD) applies to new major 
sources or modifications made to major sources for pollutants where the 
area in which the source is located is in attainment of, or 
unclassifiable with regard to, the relevant NAAQS. Maine DEP's EPA-
approved PSD rules, contained at 06-096 CMR Chapter 115, ``Major and 
Minor Source Air Emission License Regulations,'' contain provisions 
that address applicable requirements for all regulated NSR pollutants, 
including Greenhouse Gases (GHGs).
    EPA's ``Final Rule to Implement the 8-Hour Ozone National Ambient 
Air Quality Standard--Phase 2; Final Rule to Implement Certain Aspects 
of the 1990 Amendments Relating to New Source Review and Prevention of 
Significant Deterioration as They Apply in Carbon Monoxide, Particulate 
Matter, and Ozone NAAQS; Final Rule for Reformulated Gasoline'' (Phase 
2 Rule) was published on November 29, 2005 (70 FR 71612). Among other 
requirements, the Phase 2 Rule obligated states to revise their PSD 
programs to explicitly identify NOX as a precursor to ozone. 
See 70 FR 71679. This requirement is codified in 40 CFR 51.166, and 
requires that states submit SIP revisions incorporating the 
requirements of the rule, including provisions that would treat 
NOX as a precursor to ozone provisions. These SIP revisions 
were to have been submitted to EPA by states by June 15, 2007. See 70 
FR 71683.
    Maine has adopted, and EPA has approved, rules addressing the 
changes to 40 CFR 51.166 required by the Phase 2 Rule, including 
amending its SIP to include NOX and VOC as precursor 
pollutants to ozone, in order to define what constitutes a 
``significant'' increase in actual emissions from a source of air 
contaminants. See 81 FR 50353 (August 1, 2016). Therefore, EPA proposes 
to approve Maine's infrastructure SIP submission for the 2012 
PM2.5 NAAQS with respect to the requirements of the Phase 2 
Rule and the PSD sub-element of section 110(a)(2)(C).
    On May 16, 2008 (73 FR 28321), EPA issued the Final Rule on the 
``Implementation of the New Source Review (NSR) Program for Particulate 
Matter Less than 2.5 Micrometers (PM2.5)'' (2008 NSR Rule). 
The 2008 NSR Rule finalized several new requirements for SIPs to 
address sources that emit direct PM2.5 and other pollutants 
that contribute to secondary PM2.5 formation. One of these 
requirements is for NSR permits to address pollutants responsible for 
the secondary formation of PM2.5, otherwise known as 
precursors. In the 2008 rule, EPA identified precursors to 
PM2.5 for the PSD program to be SO2 and 
NOX (unless the state demonstrates to the Administrator's 
satisfaction or EPA demonstrates that NOX emissions in an 
area are not a significant contributor to that area's ambient 
PM2.5 concentrations). The 2008 NSR Rule also specifies that 
VOCs are not considered to be precursors to PM2.5 in the PSD 
program unless the state demonstrates to the Administrator's 
satisfaction or EPA demonstrates that emissions of VOCs in an area are

[[Page 39960]]

significant contributors to that area's ambient PM2.5 
concentrations.
    The explicit references to SO2, NOX, and VOCs 
as they pertain to secondary PM2.5 formation are codified at 
40 CFR 51.166(b)(49)(i)(b) and 40 CFR 52.21(b)(50)(i)(b). As part of 
identifying pollutants that are precursors to PM2.5, the 
2008 NSR Rule also required states to revise the definition of 
``significant'' as it relates to a net emissions increase or the 
potential of a source to emit pollutants. Specifically, 40 CFR 
51.166(b)(23)(i) and 40 CFR 52.21(b)(23)(i) define ``significant'' for 
PM2.5 to mean the following emissions rates: 10 tons per 
year (tpy) of direct PM2.5; 40 tpy of SO2; and 40 
tpy of NOX (unless the state demonstrates to the 
Administrator's satisfaction or EPA demonstrates that NOX 
emissions in an area are not a significant contributor to that area's 
ambient PM2.5 concentrations). The deadline for states to 
submit SIP revisions to their PSD programs incorporating these changes 
was May 16, 2011. See 73 FR 28321 at 28341.\6\
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    \6\ EPA notes that on January 4, 2013, the U.S. Court of Appeals 
for the D.C. Circuit, in Natural Resources Defense Council v. EPA, 
706 F.3d 428 (DC Cir.), held that EPA should have issued the 2008 
NSR Rule in accordance with the CAA's requirements for 
PM10 nonattainment areas (Title I, part D, subpart 4), 
and not the general requirements for nonattainment areas under 
subpart 1 (Natural Resources Defense Council v. EPA, No. 08-1250). 
As the subpart 4 provisions apply only to nonattainment areas, EPA 
does not consider the portions of the 2008 rule that address 
requirements for PM2.5 attainment and unclassifiable 
areas to be affected by the court's opinion. Moreover, EPA does not 
anticipate the need to revise any PSD requirements promulgated by 
the 2008 NSR rule in order to comply with the court's decision. 
Accordingly, EPA's approval of Maine's infrastructure SIP as to 
Elements C, D(i)(II), or J with respect to the PSD requirements 
promulgated by the 2008 implementation rule does not conflict with 
the court's opinion.
    The Court's decision with respect to the nonattainment NSR 
requirements promulgated by the 2008 implementation rule also does 
not affect EPA's action on the present infrastructure action. EPA 
interprets the CAA to exclude nonattainment area requirements, 
including requirements associated with a nonattainment NSR program, 
from infrastructure SIP submissions due three years after adoption 
or revisitation of a NAAQS. Instead, these elements are typically 
referred to as nonattainment SIP or attainment plan elements, which 
would be due by the dates statutorily prescribed under subpart 2 
through 5 under part D, extending as far as 10 years following 
designations for some elements.
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    On August 1, 2016 (81 FR 50353), EPA approved revisions to Maine's 
PSD program that identify SO2 and NOX as 
precursors to PM2.5 and revise the state's regulatory 
definition of ``significant'' for PM2.5 to mean 10 tons per 
year (tpy) or more of direct PM2.5 emissions, 40 tpy or more 
of SO2 emissions, or 40 tpy or more of NOX 
emissions.
    The 2008 NSR Rule did not require states to immediately account for 
gases that could condense to form particulate matter, known as 
condensables, in PM2.5 and PM10 emission limits 
in NSR permits. Instead, EPA determined that states had to account for 
PM2.5 and PM10 condensables for applicability 
determinations and in establishing emissions limitations for 
PM2.5 and PM10 in PSD permits beginning on or 
after January 1, 2011. See 73 FR 28321 at 28334. This requirement is 
codified in 40 CFR 51.166(b)(49)(i)(a) and 40 CFR 52.21(b)(50)(i)(a).
    Maine's SIP-approved PSD program defines PM2.5 and 
PM10 emissions in such a manner that gaseous emissions which 
would condense under ambient conditions are treated in an equivalent 
manner as required by EPA's definition of ``regulated air pollutant'' 
in 40 CFR 51.166(b)(49)(i)(a). EPA approved these definitions into the 
SIP on August 1, 2016 (81 FR 50353). Consequently, we propose that the 
state's PSD program adequately accounts for the condensable fraction of 
PM2.5 and PM10.
    Therefore, we propose to approve Maine's infrastructure SIP 
submittal for the 2012 PM2.5 NAAQS with respect to the 
requirements of the 2008 NSR Rule and the PSD sub-element of section 
110(a)(2)(C).
    On October 20, 2010 (75 FR 64864), EPA issued the final rule on 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)'' 
(2010 NSR Rule). This rule established several components for making 
PSD permitting determinations for PM2.5, including a system 
of ``increments,'' which is the mechanism used to estimate significant 
deterioration of ambient air quality for a pollutant. These increments 
are codified in 40 CFR 51.166(c) and 40 CFR 52.21(c). On June 24, 2014 
(79 FR 35695), EPA approved PM2.5 increments in 06-096 CMR 
Chapter 110 of Maine's regulations.
    The 2010 NSR Rule also established a new ``major source baseline 
date'' for PM2.5 as October 20, 2010, and a new trigger date 
for PM2.5 of October 20, 2011 in the definition of ``minor 
source baseline date.'' These revisions are codified in 40 CFR 
51.166(b)(14)(i)(c) and (b)(14)(ii)(c), and 40 CFR 52.21(b)(14)(i)(c) 
and (b)(14)(ii)(c). Lastly, the 2010 NSR Rule revised the definition of 
``baseline area'' to include a level of significance (SIL) of 0.3 
micrograms per cubic meter ([micro]g/m\3\), annual average, for 
PM2.5. This change is codified in 40 CFR 51.166(b)(15)(i) 
and 40 CFR 52.21(b)(15)(i). On August 1, 2016 (81 FR 50353), EPA 
approved revisions to the Maine SIP that address EPA's 2010 NSR rule. 
Therefore, with respect to the 2010 NSR Rule and the PSD sub-element of 
section 110(a)(2)(C), we are proposing to approve Maine's 
infrastructure SIP submittal for the 2012 PM2.5 NAAQS.
    With respect to Elements C and J, EPA interprets the Clean Air Act 
to require each state to make an infrastructure SIP submission for a 
new or revised NAAQS that demonstrates that the air agency has a 
complete PSD permitting program meeting the current requirements for 
all regulated NSR pollutants. The requirements of Element D(i)(II) may 
also be satisfied by demonstrating the air agency has a complete PSD 
permitting program correctly addressing all regulated NSR pollutants. 
Maine has shown that it currently has a PSD program in place that 
covers all regulated NSR pollutants, including GHGs.
    On June 23, 2014, the United States Supreme Court issued a decision 
addressing the application of PSD permitting requirements to GHG 
emissions. Utility Air Regulatory Group v. Environmental Protection 
Agency, 134 S.Ct. 2427. The Supreme Court said that EPA may not treat 
GHGs as an air pollutant for purposes of determining whether a source 
is a major source required to obtain a PSD permit. The Court also said 
that EPA could continue to require that PSD permits, otherwise required 
based on emissions of pollutants other than GHGs, contain limitations 
on GHG emissions based on the application of BACT.
    In accordance with the Supreme Court decision, on April 10, 2015, 
the U.S. Court of Appeals for the District of Columbia Circuit (the 
D.C. Circuit) issued an amended judgment vacating the regulations that 
implemented Step 2 of the EPA's PSD and Title V Greenhouse Gas 
Tailoring Rule, but not the regulations that implement Step 1 of that 
rule. Step 1 of the Tailoring Rule covers sources that are required to 
obtain a PSD permit based on emissions of pollutants other than GHGs. 
Step 2 applied to sources that emitted only GHGs above the thresholds 
triggering the requirement to obtain a PSD permit. The amended judgment 
preserves, without the need for additional rulemaking by EPA, the 
application of the Best Available Control Technology (BACT) requirement 
to GHG emissions from Step 1 or ``anyway'' sources. With respect to 
Step 2 sources, the D.C. Circuit's amended judgment vacated the 
regulations at issue in the litigation, including 40 CFR 
51.166(b)(48)(v), ``to

[[Page 39961]]

the extent they require a stationary source to obtain a PSD permit if 
greenhouse gases are the only pollutant (i) that the source emits or 
has the potential to emit above the applicable major source thresholds, 
or (ii) for which there is a significant emission increase from a 
modification.''
    On August 19, 2015, EPA amended its PSD and title V regulations to 
remove from the Code of Federal Regulations portions of those 
regulations that the D.C. Circuit specifically identified as vacated. 
EPA intends to further revise the PSD and title V regulations to fully 
implement the Supreme Court and D.C. Circuit rulings in a separate 
rulemaking. This future rulemaking will include revisions to additional 
definitions in the PSD regulations.
    Some states have begun to revise their existing SIP-approved PSD 
programs in light of these court decisions, and some states may prefer 
not to initiate this process until they have more information about the 
additional planned revisions to EPA's PSD regulations. EPA is not 
expecting states to have revised their PSD programs in anticipation of 
EPA's additional actions to revise its PSD program rules in response to 
the court decisions for purposes of infrastructure SIP submissions. 
Instead, EPA is only evaluating such submissions to assure that the 
state's program addresses GHGs consistent with both the court decision, 
and the revisions to PSD regulations that EPA has completed at this 
time.
    On October 5, 2012 (77 FR 49404), EPA approved revisions to the 
Maine SIP that modified Maine's PSD program to establish appropriate 
emission thresholds for determining which new stationary sources and 
modification projects become subject to Maine's PSD permitting 
requirements for their GHG emissions. Therefore, EPA has determined 
that Maine's SIP is sufficient to satisfy Elements C, D(i)(II), and J 
with respect to GHGs. The Supreme Court decision and subsequent D.C. 
Circuit judgment do not prevent EPA's approval of Maine's 
infrastructure SIP as to the requirements of Element C, as well as sub-
elements D(i)(II), and J(iii).
    For the purposes of this rulemaking on Maine's infrastructure SIP, 
EPA reiterates that NSR Reform is not in the scope of these actions.
    In summary, we are proposing to approve Maine's submittal for this 
sub-element with respect to the 2012 PM2.5 NAAQS.
Sub-Element 3: Preconstruction Permitting for Minor Sources and Minor 
Modifications
    To address the pre-construction regulation of the modification and 
construction of minor stationary sources and minor modifications of 
major stationary sources, an infrastructure SIP submission should 
identify the existing EPA-approved SIP provisions and/or include new 
provisions that govern the minor source pre-construction program that 
regulate emissions of the relevant NAAQS pollutants. EPA last approved 
revisions to Maine's minor NSR program on August 1, 2016 (81 FR 50353). 
Maine and EPA rely on the existing minor NSR program in 06-096 CMR 
Chapter 115 to ensure that new and modified sources not captured by the 
major NSR permitting programs do not interfere with attainment and 
maintenance of the 2012 PM2.5 NAAQS.
    We are proposing to find that Maine has met the requirement to have 
a SIP-approved minor new source review permit program as required under 
Section 110(a)(2)(C) for the 2012 PM2.5 NAAQS.

D. Section 110(a)(2)(D)--Interstate Transport.

    This section contains a comprehensive set of air quality management 
elements pertaining to the transport of air pollution with which states 
must comply. It covers the following five topics, categorized as sub-
elements: Sub-element 1, Significant contribution to nonattainment, and 
interference with maintenance of a NAAQS; Sub-element 2, PSD; Sub-
element 3, Visibility protection; Sub-element 4, Interstate pollution 
abatement; and Sub-element 5, International pollution abatement. Sub-
elements 1 through 3 above are found under section 110(a)(2)(D)(i) of 
the Act, and these items are further categorized into the four prongs 
discussed below, two of which are found within sub-element 1. Sub-
elements 4 and 5 are found under section 110(a)(2)(D)(ii) of the Act 
and include provisions insuring compliance with sections 115 and 126 of 
the Act relating to interstate and international pollution abatement.
Sub-Element 1: Section 110(a)(2)(D)(i)(I)--Contribute to Nonattainment 
(Prong 1) and Interfere With Maintenance of the NAAQS (Prong 2)
    Section 110(a)(2)(D)(i)(I) of the CAA requires a SIP to prohibit 
any emissions activity in the state that will contribute significantly 
to nonattainment or interfere with maintenance of the NAAQS in any 
downwind state. EPA commonly refers to these requirements as prong 1 
(significant contribution to nonattainment) and prong 2 (interference 
with maintenance), or jointly as the ``Good Neighbor'' or ``transport'' 
provisions of the CAA. This rulemaking proposes action on the portions 
of Maine's July 6, 2016, SIP submission that address the prong 1 and 2 
requirements with respect to the 2012 PM2.5 NAAQS.
    EPA has developed a consistent framework for addressing the prong 1 
and 2 interstate-transport requirements with respect to the 
PM2.5 NAAQS in several previous federal rulemakings. The 
four basic steps of that framework include: (1) Identifying downwind 
receptors that are expected to have problems attaining or maintaining 
the NAAQS; (2) identifying which upwind states contribute to these 
identified problems in amounts sufficient to warrant further review and 
analysis; (3) for states identified as contributing to downwind air 
quality problems, identifying upwind emissions reductions necessary to 
prevent an upwind state from significantly contributing to 
nonattainment or interfering with maintenance of the NAAQS downwind; 
and (4) for states that are found to have emissions that significantly 
contribute to nonattainment or interfere with maintenance of the NAAQS 
downwind, reducing the identified upwind emissions through adoption of 
permanent and enforceable measures. This framework was most recently 
applied with respect to PM2.5 in the Cross-State Air 
Pollution Rule (CSAPR), which addressed both the 1997 and 2006 
PM2.5 standards, as well as the 1997 ozone standard. See 76 
FR 48208 (August 8, 2011).
    EPA's analysis for CSAPR, conducted consistent with the four-step 
framework, included air-quality modeling that evaluated the impacts of 
38 eastern states on identified receptors in the eastern United States. 
EPA indicated that, for step 2 of the framework, states with impacts on 
downwind receptors that are below the contribution threshold of 1% of 
the relevant NAAQS would not be considered to significantly contribute 
to nonattainment or interfere with maintenance of the relevant NAAQS, 
and would, therefore, not be included in CSAPR. See 76 FR 48220. EPA 
further indicated that such states could rely on EPA's analysis for 
CSAPR as technical support in order to demonstrate that their existing 
or future interstate transport SIP submittals are adequate to address 
the transport

[[Page 39962]]

requirements of 110(a)(2)(D)(i)(I) with regard to the relevant NAAQS. 
Id.
    In addition, as noted above, on March 17, 2016, EPA released the 
2016 memorandum to provide information to states as they develop SIPs 
addressing the Good Neighbor provision as it pertains to the 2012 
PM2.5 NAAQS. Consistent with step 1 of the framework, the 
2016 memorandum provides projected future-year annual PM2.5 
design values for monitors throughout the country based on quality-
assured and certified ambient-monitoring data and recent air-quality 
modeling and explains the methodology used to develop these projected 
design values. The memorandum also describes how the projected values 
can be used to help determine which monitors should be further 
evaluated to potentially address if emissions from other states 
significantly contribute to nonattainment or interfere with maintenance 
of the 2012 PM2.5 NAAQS at these monitoring sites. The 2016 
memorandum explained that the pertinent year for evaluating air quality 
for purposes of addressing interstate transport for the 2012 
PM2.5 NAAQS is 2021, the attainment deadline for 2012 
PM2.5 NAAQS nonattainment areas classified as Moderate. 
Accordingly, because the available data included 2017 and 2025 
projected average and maximum PM2.5 design values calculated 
through the CAMx photochemical model, the memorandum suggests 
approaches states might use to interpolate PM2.5 values at 
sites in 2021.
    For all but one monitor site in the eastern United States, the 
modeling data provided in the 2016 memorandum showed that monitors were 
expected to both attain and maintain the 2012 PM2.5 NAAQS in 
both 2017 and 2025. The modeling results project that this one monitor, 
the Liberty monitor, (ID number 420030064), located in Allegheny 
County, Pennsylvania, will be above the 2012 annual PM2.5 
NAAQS in 2017, but only under the model's maximum projected conditions, 
which are used in EPA's interstate transport framework to identify 
maintenance receptors. The Liberty monitor (along with all the other 
Allegheny County monitors) is projected to both attain and maintain the 
NAAQS in 2025. The 2016 memorandum suggests that under such a condition 
(again, where EPA's photochemical modeling indicates an area will 
maintain the 2012 annual PM2.5 NAAQS in 2025, but not in 
2017), further analysis of the site should be performed to determine if 
the site may be a nonattainment or maintenance receptor in 2021 (which, 
again, is the attainment deadline for moderate PM2.5 areas). 
The memorandum also indicates that for certain states with incomplete 
ambient monitoring data, additional information including the latest 
available data, should be analyzed to determine whether there are 
potential downwind air quality problems that may be impacted by 
transported emissions. This rulemaking considers these analyses for 
Maine, as well as additional analysis conducted by EPA during review of 
Maine's submittal.
    To develop the projected values presented in the memorandum, EPA 
used the results of nationwide photochemical air-quality modeling that 
it recently performed to support several rulemakings related to the 
ozone NAAQS. Base-year modeling was performed for 2011. Future-year 
modeling was performed for 2017 to support the proposed CSAPR Update 
for the 2008 Ozone NAAQS. See 80 FR 75705 (December 3, 2015). Future-
year modeling was also performed for 2025 to support the Regulatory 
Impact Assessment of the final 2015 Ozone NAAQS.\7\ The outputs from 
these model runs included hourly concentrations of PM2.5 
that were used in conjunction with measured data to project annual 
average PM2.5 design values for 2017 and 2025. Areas that 
were designated as moderate PM2.5 nonattainment areas for 
the 2012 annual PM2.5 NAAQS in 2014 must attain the NAAQS by 
December 31, 2021, or as expeditiously as practicable. Although neither 
the available 2017 nor 2025 future-year modeling data corresponds 
directly to the future-year attainment deadline for moderate 
PM2.5 nonattainment areas, EPA believes that the modeling 
information is still helpful for identifying potential nonattainment 
and maintenance receptors in the 2017-2021 period. Assessing downwind 
PM2.5 air-quality problems based on estimates of air-quality 
concentrations in a future year aligned with the relevant attainment 
deadline is consistent with the instructions from the United States 
Court of Appeals for the District of Columbia Circuit in North Carolina 
v. EPA, 531 F.3d 896, 911-12 (DC Cir. 2008) that upwind emission 
reductions should be harmonized, to the extent possible, with the 
attainment deadlines for downwind areas.
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    \7\ See 2015 ozone NAAQS RIA at: https://www3.epa.gov/ttnecas1/docs/20151001ria.pdf.
---------------------------------------------------------------------------

Maine's Submission for Prongs 1 and 2
    On July 6, 2016, Maine DEP submitted an infrastructure SIP 
submission for the 2012 PM2.5 NAAQS that addressed prongs 1 
and 2 for the 2012 PM2.5 NAAQS. The state's submission 
relied in part on EPA's analysis performed for the CSAPR rulemaking to 
conclude that the state will not significantly contribute to 
nonattainment or interfere with maintenance of the 2012 
PM2.5 NAAQS in any downwind area.
    EPA analyzed the state's July 2016 submittal to determine whether 
it fully addresses the prong 1 and 2 transport provisions with respect 
to the 2012 PM2.5 NAAQS. As discussed below, EPA concludes 
that emissions of PM2.5 and PM2.5 precursors 
(NOX and SO2) in Maine will not significantly 
contribute to nonattainment or interfere with maintenance of the 2012 
PM2.5 NAAQS in any other state.
Analysis of Maine's Submission for the 2012 PM2.5 NAAQS
    As noted above, the modeling discussed in EPA's 2016 memorandum 
identified one potential maintenance receptor for the 2012 
PM2.5 NAAQS at the Liberty monitor (ID number 420030064), 
located in Allegheny County. The memorandum also identified certain 
states with incomplete ambient monitoring data as areas that may 
require further analysis to determine whether there are potential 
downwind air quality problems that may be impacted by transported 
emissions.
    While developing the 2011 CSAPR rulemaking, EPA modeled the impacts 
of all 38 eastern states in its modeling domain on PM2.5 
concentrations at downwind receptors in other states in the 2012 
analysis year in order to evaluate the contribution of upwind states on 
downwind states with respect to the 1997 and 2006 PM2.5. 
Although the modeling was not conducted for purposes of analyzing 
upwind states' impacts on downwind receptors with respect to the 2012 
PM2.5 NAAQS, the contribution analysis for the 1997 and 2006 
standards can be informative for evaluating Maine's compliance with the 
Good Neighbor provision for the 2012 standard.
    This CSAPR modeling showed that Maine had a very small impact 
(0.003 [mu]g/m\3\) on the Liberty monitor in Allegheny County, which is 
the only out-of-state monitor that may be a nonattainment or 
maintenance receptor in 2021. Although EPA has not proposed a specific 
threshold for evaluating the 2012 PM2.5 NAAQS, EPA notes 
that Maine's impact on the Liberty monitor is far below the threshold 
of 1% for the annual 2012 PM2.5 NAAQS (i.e., 0.12 [mu]g/
m\3\) that EPA previously used to evaluate the contribution of upwind 
states to downwind air-quality monitors. (A spreadsheet showing

[[Page 39963]]

CSAPR contributions for ozone and PM2.5 is included in 
docket EPA-HQ-OAR-2009-0491-4228.) Therefore, even if the Liberty 
monitor were considered a receptor for purposes of transport, the EPA 
proposes to conclude that Maine will not significantly contribute to 
nonattainment, or interfere with maintenance, of the 2012 
PM2.5 NAAQS at that monitor.
    In addition, the Liberty monitor is already close to attaining the 
2012 PM2.5 NAAQS, and expected emissions reductions in the 
next four years will lead to additional reductions in measured 
PM2.5 concentrations. There are both local and regional 
components to measured PM2.5 levels. All monitors in 
Allegheny County have a regional component, with the Liberty monitor 
most strongly influenced by local sources. This is confirmed by the 
fact that annual average measured concentrations at the Liberty monitor 
have consistently been 2-4 [mu]g/m\3\ higher than other monitors in 
Allegheny County.
    Specifically, previous CSAPR modeling showed that regional 
emissions from upwind states, particularly SO2 and 
NOX emissions, contribute to PM2.5 nonattainment 
at the Liberty monitor. In recent years, large SO2 and 
NOX reductions from power plants have occurred in 
Pennsylvania and states upwind from the Greater Pittsburgh region. 
Pennsylvania's energy sector emissions of SO2 will have 
decreased 166,000 tons between 2015-2017 as a result of CSAPR 
implementation. This is due to both the installation of emissions 
controls and retirements of electric generating units (EGUs). Projected 
power plant closures and additional emissions controls in Pennsylvania 
and upwind states will help further reduce both direct PM2.5 
and PM2.5 precursors. Regional emission reductions will 
continue to occur from current on-the-books federal and state 
regulations such as the federal on-road and non-road vehicle programs, 
and various rules for major stationary emissions sources. See proposed 
approval of the Ohio Infrastructure SIP for the 2012 PM2.5 
NAAQS (82 FR 57689; December 7, 2017).
    In addition to regional emissions reductions and plant closures, 
additional local reductions to both direct PM2.5 and 
SO2 emissions are expected to occur and should contribute to 
further declines in Allegheny County's PM2.5 monitor 
concentrations. For example, significant SO2 reductions have 
recently occurred at US Steel's integrated steel mill facilities in 
southern Allegheny County as part of a 1-hr SO2 NAAQS 
SIP.\8\ Reductions are largely due to declining sulfur content in the 
Clairton Coke Work's coke oven gas (COG). Because this COG is burned at 
US Steel's Clairton Coke Works, Irvin Mill, and Edgar Thompson Steel 
Mill, these reductions in sulfur content should contribute to much 
lower PM2.5 precursor emissions in the immediate future. The 
Allegheny SO2 SIP also projects lower SO2 
emissions resulting from vehicle fuel standards, reductions in general 
emissions due to declining population in the Greater Pittsburgh region, 
and several shutdowns of significant sources of emissions in Allegheny 
County.
---------------------------------------------------------------------------

    \8\ http://www.achd.net/air/pubs/SIPs/SO2_2010_NAAQS_SIP_9-14-2017.pdf.
---------------------------------------------------------------------------

    EPA modeling projections, the recent downward trend in local and 
upwind emissions reductions, the expected continued downward trend in 
emissions between 2017 and 2021, and the downward trend in monitored 
PM2.5 concentrations all indicate that the Liberty monitor 
will attain and be able to maintain the 2012 annual PM2.5 
NAAQS by 2021. See proposed approval of the Ohio Infrastructure SIP (82 
FR 57689).
    As noted in the 2016 memorandum, several states have had recent 
data-quality issues identified as part of the PM2.5 
designations process. In particular, some ambient PM2.5 data 
for certain time periods between 2009 and 2013 in Florida, Illinois, 
Idaho, Tennessee, and Kentucky did not meet all data-quality 
requirements under 40 CFR part 50, appendix L. The lack of data means 
that the relevant areas in those states could potentially be in 
nonattainment or be maintenance receptors in 2021. However, as 
mentioned above, EPA's analysis for the 2011 CSAPR rulemaking with 
respect to the 2006 PM2.5 NAAQS determined that Maine's 
impact to all these downwind receptors would be well below the 1% 
contribution threshold for this NAAQS. That conclusion informs the 
analysis of Maine's contributions for purposes of the 2012 
PM2.5 NAAQS as well. Given this, and the fact that the 
state's PM2.5 design values for all ambient monitors have 
been well below the 2012 24-hour NAAQS (35 [micro]g/m\3\) and the 
annual PM2.5 NAAQS (12.0 [micro]g/m\3\) since 2005-2007,\9\ 
EPA concludes that it is highly unlikely that Maine significantly 
contributes to nonattainment or interferes with maintenance of the 2012 
PM2.5 NAAQS in areas with data-quality issues.
---------------------------------------------------------------------------

    \9\ Maine's PM2.5 design values for all ambient 
monitors from 2005-2007 through 2013-2015 are available on the 
Design Value Reports at https://19january2017snapshot.epa.gov/air-trends/air-quality-design-values_.html.
---------------------------------------------------------------------------

    Information in Maine's July 2016 SIP submission corroborates EPA's 
proposed conclusion that Maine's SIP meets its Good Neighbor 
obligations. The state's technical analysis in that submission includes 
2012-2014 design values for monitors in Maine, actual and projected 
PM2.5 emissions from 2002 through 2020 for various source 
categories for Maine, and results of EPA CSAPR modeling. As mentioned 
above, the state's PM2.5 design values for all ambient 
monitors have been well below the 2012 PM2.5 NAAQS since 
2005-2007. In addition, the 24-hour and annual design values for all 
monitors in the neighboring and nearby states of New Hampshire, 
Massachusetts, and Vermont also have been below the 2012 
PM2.5 NAAQS since 2005-2007.
    At specific monitors in Maine, the highest 24-hour mean value 
satisfying minimum data completion criteria was 25 [micro]g/m\3\ in 
2016 at a monitor in Rumford in Oxford County. The highest annual mean 
value satisfying minimum data completion criteria was 9 [micro]g/m\3\ 
in 2014 at a monitor in Madawaska in Aroostook County.\10\
---------------------------------------------------------------------------

    \10\ 24-hour and annual PM2.5 monitor values for 
individual monitoring sites throughout Maine are available at 
www.epa.gov/outdoor-air-quality-data/monitor-values-report.
---------------------------------------------------------------------------

    Second, Maine's sources are well-controlled. Maine's July 2016 
submission indicates that the state has many SIP-approved rules and 
programs that limit emissions of PM2.5 and PM2.5 
precursors and the interstate transport of pollution, including 06-096 
Code of Maine Regulations (CMR) Chapter 102, ``Open Burning 
Regulation'' (73 FR 9459, February 21, 2008); 06-096 CMR Chapter 103, 
``Fuel Burning Equipment Particulate Emission Standard'' (50 FR 7770, 
February 26, 1985); and Chapter 145, ``NOX Control Program'' 
(70 FR 11879, March 10, 2005), as well the state's Title V permitting 
program (38 MRSA Sec.  353-A; 06-096 CMR Chapter 140, which was 
approved by EPA on October 18, 2001 (66 FR 52874)).
    It should also be noted that Maine is not in the CSAPR program 
because EPA analyses show that the state does not emit NOX 
at a level that contributes significantly to non-attainment or 
interferes with maintenance of the 1997 and 2006 PM2.5 NAAQS 
in any other state.
    For the reasons explained herein, EPA agrees with Maine's 
conclusions and proposes to determine that Maine will not significantly 
contribute to nonattainment or interfere with maintenance of the 2012 
PM2.5 NAAQS

[[Page 39964]]

in any other state. Therefore, EPA is proposing to approve the July 
2016 infrastructure SIP submission from Maine with regard to prongs 1 
and 2 of CAA section 110(a)(2)(D)(i)(I) for the 2012 PM2.5 
NAAQS.
Sub-Element 2: Section 110(a)(2)(D)(i)(II)--PSD (Prong 3)
    To prevent significant deterioration of air quality, this sub-
element requires SIPs to include provisions that prohibit any source or 
other type of emissions activity in one state from interfering with 
measures that are required in any other state's SIP under Part C of the 
CAA. One way for a state to meet this requirement, specifically with 
respect to in-state sources and pollutants that are subject to PSD 
permitting, is through a comprehensive PSD permitting program that 
applies to all regulated NSR pollutants and that satisfies the 
requirements of EPA's PSD implementation rules. For in-state sources 
not subject to PSD, this requirement can be satisfied through a fully-
approved nonattainment new source review (NNSR) program with respect to 
any previous NAAQS. EPA last approved revisions to Maine's NNSR 
regulations on February 14, 1996 (61 FR 5690).
    To meet the requirements of Prong 3, Maine DEP cites to its PSD 
permitting programs under 06-096 CMR Chapter 115, ``Major and Minor 
Source Air Emission License Regulations,'' to ensure that new and 
modified major sources of PM2.5, SO2, and 
NOX emissions do not contribute significantly to 
nonattainment, or interfere with maintenance, of those standards. As 
noted above in our discussion of Element C, Maine's PSD program fully 
satisfies the requirements of EPA's PSD implementation rules. 
Consequently, we are proposing to approve Maine's infrastructure SIP 
submission for the 2012 PM2.5 NAAQS related to section 
110(a)(2)(D)(i)(II) Prong 3 for the reasons discussed under Element C.
Sub-Element 3: Section 110(a)(2)(D)(i)(II)--Visibility Protection 
(Prong 4)
    With regard to applicable requirements for visibility protection of 
section 110(a)(2)(D)(i)(II), states are subject to visibility and 
regional-haze program requirements under part C of the CAA (which 
includes sections 169A and 169B). EPA's 2009, 2011, and 2013 memoranda 
recommend that these requirements can be satisfied by an approved SIP 
addressing reasonably attributable visibility impairment, if required, 
or an approved SIP addressing regional haze. A fully approved regional 
haze SIP meeting the requirements of 40 CFR 51.308 will ensure that 
emissions from sources under an air agency's jurisdiction are not 
interfering with measures required to be included in other air 
agencies' plans to protect visibility. EPA approved Maine's Regional 
Haze SIP on April 24, 2012 (77 FR 24385). Accordingly, EPA proposes 
that Maine has met the visibility protection requirements of 
110(a)(2)(D)(i)(II) for the 2012 PM2.5 NAAQS.
Sub-Element 4: Section 110(a)(2)(D)(ii)--Interstate Pollution Abatement
    This sub-element requires each SIP to contain provisions requiring 
compliance with requirements of section 126 relating to interstate 
pollution abatement. Section 126(a) requires new or modified sources to 
notify neighboring states of potential impacts from the source. The 
statute does not specify the method by which the source should provide 
the notification. States with SIP-approved PSD programs must have a 
provision requiring such notification by new or modified sources.
    EPA-approved regulations require the Maine DEP to provide pre-
construction notice of new or modified sources to, among others, ``any 
State . . . whose lands may be affected by emissions from the source or 
modification.'' See 06-096 CMR Chapter 115, Sec.  IX(E)(3), approved 
March 23, 1993 (58 FR 15422). Such notice ``shall announce availability 
of the application, the Department's preliminary determination in the 
form of a draft order, the degree of increment consumption that is 
expected from the source or modification, as well as the opportunity 
for submission of written public comment.'' 06-096 CMR Chapter 115, 
Sec.  IX(E)(2). These provisions are consistent with EPA's PSD 
regulations and require notice to affected states of a determination to 
issue a draft PSD permit. Regarding section 126(b), no source or 
sources within the state are the subject of an active finding with 
respect to the 2012 PM2.5 NAAQS. Consequently, EPA proposes 
to approve Maine's infrastructure SIP submittals for this sub-element 
with respect to the 2012 PM2.5 NAAQS.
Sub-Element 5: Section 110(a)(2)(D)(ii)--International Pollution 
Abatement
    This sub-element requires each SIP to contain provisions requiring 
compliance with the applicable requirements of CAA Sec.  115 relating 
to international pollution abatement. There are no final findings under 
section 115 against Maine with respect to the 2012 PM2.5 
NAAQS. Therefore, EPA proposes that Maine has met the applicable 
infrastructure SIP requirements of section 110(a)(2)(D)(ii) related to 
section 115 for the 2012 PM2.5 NAAQS.

E. Section 110(a)(2)(E)--Adequate Resources

    This section requires each state to provide for personnel, funding, 
and legal authority under state law to carry out its SIP and related 
issues. In addition, Section 110(a)(2)(E)(ii) requires each state to 
comply with the requirements with respect to state boards under section 
128. Finally, section 110(a)(2)(E)(iii) requires that, where a state 
relies upon local or regional governments or agencies for the 
implementation of its SIP provisions, the state retain responsibility 
for ensuring implementation of SIP obligations with respect to relevant 
NAAQS. This last sub-element, however, is inapplicable to this action, 
because Maine does not rely upon local or regional governments or 
agencies for the implementation of its SIP provisions.
Sub-Element 1: Adequate Personnel, Funding, and Legal Authority Under 
State Law To Carry Out Its SIP, and Related Issues
    Maine, through its infrastructure SIP submittal, has documented 
that its air agency has authority and resources to carry out its SIP 
obligations. Maine cites to 38 MRSA Sec.  341-A, ``Department of 
Environmental Protection,'' 38 MRSA Sec.  341-D, ``Board 
responsibilities and duties,'' 38 MRSA Sec.  342, ``Commissioner, 
duties'' and 38 MRSA Sec.  581, ``Declaration of findings and intent.'' 
These statutes provide the Maine DEP with the legal authority to 
enforce air pollution control requirements and carry out SIP 
obligations with respect to the 2012 PM2.5 NAAQS. 
Additionally, state law provides Maine DEP with the authority to assess 
preconstruction permit fees and annual operating permit fees from air 
emissions sources and establishes a general revenue reserve account 
within the general fund to finance the state clean air programs. Maine 
also receives CAA sections 103 and 105 grant funds through Performance 
Partnership Grants along with required state-matching funds to provide 
funding necessary to carry out SIP requirements. Maine DEP states that 
these funding sources provide it with adequate resources to carry out 
the SIP. Therefore, EPA proposes that Maine has met the infrastructure 
SIP requirements of this

[[Page 39965]]

portion of section 110(a)(2)(E) with respect to the 2012 
PM2.5 NAAQS.
Sub-Element 2: State Board Requirements Under Section 128 of the CAA
    Section 110(a)(2)(E) also requires each SIP to provide requirements 
that the State comply with the state board requirements of section 128 
of the CAA. Section 128(a) contains two explicit requirements: (1) That 
any board or body which approves permits or enforcement orders under 
this chapter shall have at least a majority of members who represent 
the public interest and do not derive any significant portion of their 
income from persons subject to permits and enforcement orders under 
this chapter, and (2) that any potential conflicts of interest by 
members of such board or body or the head of an executive agency with 
similar powers be adequately disclosed.
    As mentioned earlier, the Maine DEP consists of a Commissioner and 
a Board of Environmental Protection (``BEP'' or ``Board''), which is an 
independent authority under state law that reviews certain permit 
applications in the first instance and also renders final decisions on 
appeals of permitting actions taken by the Commissioner as well as some 
enforcement decisions by the Commissioner. Because the Board has 
authority under state law to hear appeals of some CAA permits and 
enforcement orders, EPA considers that the Board has authority to 
``approve'' those permits or enforcement orders, as recommended in the 
2013 Memorandum, and that the requirement of CAA Sec.  128(a)(1) 
applies to Maine--that is, that ``any board or body which approves 
permits or enforcement orders under this chapter shall have at least a 
majority of members who represent the public interest and do not derive 
any significant portion of their income from persons subject to permits 
and enforcement orders under this chapter.''
    Pursuant to state law, the BEP consists of seven members appointed 
by the Governor, subject to confirmation by the State Legislature. See 
38 MRSA Sec.  341-C(1). The purpose of the Board ``is to provide 
informed, independent and timely decisions on the interpretation, 
administration and enforcement of the laws relating to environmental 
protection and to provide for credible, fair and responsible public 
participation in department decisions.'' Id. Sec.  341-B. State law 
further provides that Board members ``must be chosen to represent the 
broadest possible interest and experience that can be brought to bear 
on the administration and implementation of'' Maine's environmental 
laws and that ``[a]t least 3 members must have technical or scientific 
backgrounds in environmental issues and no more than 4 members may be 
residents of the same congressional district.'' Id. Sec.  341-C(2). EPA 
proposes to find that these provisions fulfill the requirement that at 
least a majority of Board members represent the public interest, but do 
not address the requirement that at least a majority ``not derive any 
significant portion of their income from persons subject to'' air 
permits and enforcement orders. Furthermore, section 341-C is not 
currently in Maine's SIP. By letter dated March 1, 2018 (extended to 
apply to the 2012 PM2.5 NAAQS in an email dated July 17, 
2018), DEP committed to revise section 341-C to address the CAA Sec.  
128(a)(1) requirement that at least a majority of Board members ``not 
derive a significant portion of their income from persons subject to'' 
air permits or enforcement orders and to submit, for inclusion in the 
SIP, the necessary provisions to EPA within one year of EPA final 
action on its infrastructure SIPs for the 2008 lead (Pb), 2008 ozone, 
and 2010 nitrogen dioxide (NO2) NAAQS. Final action on these 
SIPs was published on June 18, 2018 (83 FR 28157). Consequently, EPA 
proposes to conditionally approve Maine's infrastructure SIP submittal 
for this requirement of CAA Sec.  128(a)(1) for the 2012 
PM2.5 NAAQS.
    As noted above, section 128(a)(2) of the Act provides that ``any 
potential conflicts of interest by members of such board or body or the 
head of an executive agency with similar powers be adequately 
disclosed.'' As EPA has explained in other infrastructure SIP actions, 
the purpose of section 128(a)(2) is to assure that conflicts of 
interest are disclosed by the ultimate decision maker in permit or 
enforcement order decisions. See, e.g., 80 FR 42446, 42454 (July 17, 
2015). Although the Board is the ultimate decision maker on air 
permitting decisions in Maine, certain air enforcement orders of the 
DEP Commissioner are not reviewable by the Board, but rather may be 
appealed directly to Maine Superior Court. For this reason, EPA 
interprets the conflict of interest requirement of CAA Sec.  128(a)(2) 
to be applicable in Maine to both Board members and the DEP 
Commissioner.
    In a recent infrastructure SIP action for the 2008 Pb, 2008 ozone, 
and 2010 NO2 NAAQS, EPA determined that Maine's conflict of 
interest statute, 5 MRSA Sec.  18, and a provision explicitly making it 
applicable to Board members, 38 MRSA Sec.  341-C(7), together satisfy 
the CAA Sec.  128(a)(2) requirement for Maine with respect to Board 
members, and EPA approved both statutes into the Maine SIP. 83 FR 28157 
(June 18, 2018). For more information, see 83 FR 12905, 12912 (March 
26, 2018). EPA proposes that Maine's SIP also satisfies CAA Sec.  
128(a)(2) with respect to Board members for the 2012 PM2.5 
NAAQS for the same reasons discussed in the infrastructure SIP action 
for the 2008 Pb, 2008 ozone, and 2010 NO2 NAAQS.
    Regarding the DEP Commissioner, state law at 38 MRSA Sec.  341-
A(3)(D) also explicitly makes that official subject to 5 MRSA Sec.  18, 
the same conflict-of-interest statute to which the Board is subject. In 
the above-referenced infrastructure SIP action, EPA also determined 
that together 5 MRSA Sec.  18 (which is in the Maine SIP) and 38 MRSA 
Sec.  341-A(3)(D) (which is not currently in the SIP) satisfy the 
conflict of interest requirement with respect to the DEP Commissioner. 
See 83 FR 28157; 83 FR 12905, 12912. For the same reasons discussed in 
the infrastructure SIP action for the 2008 Pb, 2008 ozone, and 2010 
NO2 NAAQS, EPA proposes that together the two state statutes 
would also satisfy the conflict of interest requirement with respect to 
the DEP Commissioner for the 2012 PM2.5 NAAQS. While 38 MRSA 
Sec.  341-A(3)(D) is not currently in the SIP, Maine DEP has already 
committed to submitting it to EPA for inclusion within one year of 
EPA's final action on Maine's infrastructure SIP submissions for the 
2008 Pb, 2008 ozone, and 2010 NO2 NAAQS. See 83 FR 28157. 
Consequently, EPA proposes to conditionally approve Maine's 
infrastructure SIP submissions for the conflict of interest requirement 
of CAA Sec.  128(a)(2) with respect to the DEP Commissioner for the 
2012 PM2.5 NAAQS.

F. Section 110(a)(2)(F)--Stationary Source Monitoring System

    States must establish a system to monitor emissions from stationary 
sources and submit periodic emissions reports. Each plan shall also 
require 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. The state 
plan shall also require periodic reports on the nature and amounts of 
emissions and emissions-related data from such sources, and correlation 
of such reports by each state agency with any emission limitations or 
standards. Lastly, the reports shall be available at reasonable times 
for public inspection.

[[Page 39966]]

    Maine's infrastructure submittal references several existing state 
regulations previously approved by EPA that require sources to monitor 
emissions and submit reports. The first reference is to 06-096 CMR 
Chapter 115, ``Major and Minor Source Air Emission License 
Regulations.'' This regulation contains compliance assurance 
requirements for licensed sources and stipulates that licenses shall 
include the following compliance assurance elements: (a) A description 
of all required monitoring and analysis procedures or test methods 
required under the requirements applicable to the source; (b) A 
description of all recordkeeping requirements; and (c) A description of 
all reporting requirements. The second reference is to 06-096 CMR 
Chapter 117, ``Source Surveillance.'' This regulation specifies which 
air emission sources are required to operate continuous emission 
monitoring systems (CEMS) and details the performance specifications, 
quality assurance requirements and procedures for such systems, and 
subsequent record keeping and reporting requirements. In addition, 
Maine cites its regulations implementing its operating permit program 
pursuant to 40 CFR part 70: 06-096 CMR Chapter 140, ``Part 70 Air 
Emission License Regulations.'' These regulations, although not in the 
SIP, identify the sources of air emissions that require a Part 70 air 
emission license and incorporate the requirements of Title IV and Title 
V of the Clean Air Act, as amended, 42 U.S.C. 7401, et seq., and 38 
MRSA Sec. Sec.  344 and 590. Chapter 140 contains compliance assurance 
requirements regarding monitoring and reporting for licensed sources 
requiring a Part 70 air emission license. The regulation was approved 
by EPA on October 18, 2001 (66 FR 52874). While Chapter 140 and the 
referenced provisions of Chapter 115 are not formally approved into 
Maine's SIP, they are legal mechanisms the state can use to assure the 
enforcement of the monitoring requirements approved in the SIP.
    Regarding the section 110(a)(2)(F) requirements that the SIP 
provide for the correlation and public availability of emission 
reports, Maine's emission statement rule, Chapter 137, requires 
facilities to report emissions of air pollutants on an annual basis. 
The DEP uses a web-based electronic reporting system, the Maine Air 
Emissions Inventory Reporting System (``MAIRIS''), for this purpose 
that allows it to package and electronically submit reported emissions 
data to EPA under the national emission inventory (NEI) program. NEI 
data are available to the public. See www.epa.gov/air-emissions-inventories/national-emissions-inventory-nei. The MAIRIS system is 
structured to electronically correlate reported emissions with permit 
conditions and other applicable standards, and identify all 
inconsistencies and potential compliance concerns.
    Furthermore, pursuant to DEP's EPA-approved regulations, ``Except 
as expressly made confidential by law; the commissioner shall make all 
documents available to the public for inspection and copying including 
the following: 1. All applications or other forms and documents 
submitted in support of any license application: 2. All correspondence, 
into or out of the Department, and any attachments thereto . . . .'' 
See 06-096 CMR Chapter 1, Sec.  6(A). Furthermore, ``The Commissioner 
shall keep confidential only those documents which may remain 
confidential pursuant to 1 MRSA Section 402.'' Id. Sec.  6(B). In its 
July 6, 2016, submittal, DEP certified that, ``[e]xcept as specifically 
exempted by the Maine statute (1 MRSA Chapter 13 Public Records and 
Proceedings), Maine makes all records, reports or information obtained 
by the MEDEP or referred to at public hearings available to the 
public.'' Maine DEP further certified therein that the information 
submitted to Maine DEP is ``available to the public at reasonable times 
for public inspection pursuant to Maine law.'' By letter dated March 1, 
2018 (extended to apply to the 2012 PM2.5 NAAQS in an email 
dated July 17, 2018), Maine further certified that Maine's Freedom of 
Access law does not include any exceptions that apply to stationary 
source emissions. For these reasons, we propose to find that Maine 
satisfies the requirement that emissions statements be available at 
reasonable times for public inspection.
    Finally, in the March 1, 2018, letter (extended to apply to the 
2012 PM2.5 NAAQS in an email dated July 17, 2018), DEP also 
certified that there are no provisions in Maine law that would prevent 
the use of any credible evidence of noncompliance, as required by 40 
CFR 51.212. See also 06-096 CMR Chapter 140, Sec.  3(E)(7)(a)(v) 
(``Notwithstanding any other provision in the State Implementation Plan 
approved by the EPA or Section 114(a) of the CAA, any credible evidence 
may be used for the purpose of establishing whether a person has 
violated or is in violation of any statute, regulation, or Part 70 
license requirement.''). For the above reasons, EPA proposes to approve 
Maine's submittals for this requirement of section 110(a)(2)(F) for the 
2012 PM2.5 NAAQS.

G. Section 110(a)(2)(G)--Emergency Powers

    This section requires that a plan provide for state authority 
comparable to that provided to the EPA Administrator in section 303 of 
the CAA, and adequate contingency plans to implement such authority. 
Section 303 of the CAA provides authority to the EPA Administrator to 
seek a court order to restrain any source from causing or contributing 
to emissions that present an ``imminent and substantial endangerment to 
public health or welfare, or the environment.'' Section 303 further 
authorizes the Administrator to issue ``such orders as may be necessary 
to protect public health or welfare or the environment'' in the event 
that ``it is not practicable to assure prompt protection . . . by 
commencement of such civil action.''
    We propose to find that a combination of state statutes and 
regulations discussed in Maine DEP's July 6, 2016, submittal and a 
March 1, 2018, letter (extended to apply to the 2012 PM2.5 
NAAQS in an email dated July 17, 2018) provides for authority 
comparable to that given the Administrator in CAA section 303, as 
explained below. First, 38 MRSA Sec.  347-A, ``Emergency Orders,'' 
provides that ``[w]henever it appears to the commissioner, after 
investigation, that there is a violation of the laws or regulations 
[DEP] administers or of the terms or conditions of any of [DEP's] 
orders that is creating or is likely to create a substantial and 
immediate danger to public health or safety or to the environment, the 
commissioner may order the person or persons causing or contributing to 
the hazard to immediately take such actions as are necessary to reduce 
or alleviate the danger.'' See 38 MRSA Sec.  347-A(3). Section 347-A 
further authorizes the DEP Commissioner to initiate an enforcement 
action in state court in the event of a violation of such emergency 
order issued by the Commissioner. Id. Sec.  347-A(1)(A)(4). Similarly, 
38 MRSA Sec.  348, ``Judicial Enforcement,'' authorizes Maine DEP to 
institute injunction proceedings ``[i]n the event of a violation of any 
provision of the laws administered by [DEP] or of any order, 
regulation, license, permit, approval, administrative consent agreement 
or decision of the board or commissioner.'' Id. Sec.  348(1). Section 
348 also authorizes Maine DEP to seek a court order to a restrain a 
source if it ``finds that the discharge, emission or deposit of any 
materials into any waters,

[[Page 39967]]

air or land of th[e] State constitutes a substantial and immediate 
danger to the health, safety or general welfare of any person, persons 
or property.'' Id. Sec.  348(3). Thus, these provisions authorize Maine 
DEP to issue an administrative order or to seek a court order to 
restrain any source from causing or contributing to emissions that 
present an imminent and substantial endangerment to public health or 
welfare, or the environment, if there is also a violation of a law, 
regulation, order, or permit administered or issued by DEP, as the case 
may be.
    Second, in its March 1, 2018, letter, Maine DEP also cites to 38 
MRSA Sec.  591, ``Prohibitions,'' as contributing to its authority. 
Section 591 provides that ``[n]o person may discharge air contaminants 
into ambient air within a region in such manner as to violate ambient 
air quality standards established under this chapter or emission 
standards established pursuant to section 585, 585-B or 585-K.'' In 
those cases where emissions of PM2.5, or PM2.5 
precursors may be causing or contributing to an ``imminent and 
substantial endangerment to public health or welfare, or the 
environment,'' a violation of Sec.  591 would also occur, since Maine 
law provides that ambient air quality standards are designed to prevent 
``air pollution,'' id. Sec.  584, which state law expressly defines as 
``the presence in the outdoor atmosphere of one or more air 
contaminants in sufficient quantities and of such characteristics and 
duration as to be injurious to human, plant or animal life or to 
property, or which unreasonably interfere with the enjoyment of life 
and property,'' id. Sec.  582(3) (emphasis added). In its March 1, 
2018, letter, Maine further explains that sections 347-A and 591 
``together authorize the Commissioner to issue an emergency order upon 
finding an apparent violation of DEP laws or regulations to address 
emissions of criteria pollutants, air contaminants governed by 
standards promulgated under section 585, and hazardous air pollutants 
governed by standards promulgated under section 585-B.''
    Third, in the unlikely event that air emissions are creating a 
substantial or immediate threat to the public health, safety or to the 
environment without violating any DEP law, regulation, order, or 
permit, emergency authority to issue an order to restrain a source may 
also be exercised pursuant to 37-B MRSA Sec.  742, ``Emergency 
Proclamation.'' Maine explains that the DEP Commissioner can notify the 
Governor of an imminent ``disaster,'' and the Governor can then 
exercise authority to ``declare a state of emergency in the State or 
any section of the State.'' See 37-B MRSA Sec.  742(1)(A). State law 
defines ``disaster'' in this context to mean ``the occurrence or 
imminent threat of widespread or severe damage, injury or loss of life 
or property resulting from any natural or man-made cause, including, 
but not limited to . . . air contamination.'' Id. Sec.  703(2). Upon 
the declaration of a state of emergency, the Governor may, among other 
things, ``[o]rder the termination, temporary or permanent, of any 
process, operation, machine or device which may be causing or is 
understood to be the cause of the state of emergency,'' id. Sec.  
742(1)(C)(11), or ``[t]ake whatever action is necessary to abate, clean 
up or mitigate whatever danger may exist within the affected area,'' 
id. Sec.  742(1)(C)(12). Thus, even if there may otherwise be no 
violation of a DEP-administered or -issued law, regulation, order, or 
permit, state authorities exist to restrain the source.
    Finally, Maine's submittal cites 06-096 CMR Chapter 109, 
``Emergency Episode Regulations,'' which sets forth various emission 
reduction plans intended to prevent air pollution from reaching levels 
that would cause imminent and substantial harm and recognizes the 
Commissioner's authority to issue additional emergency orders pursuant 
to 38 MRSA Sec.  347-A, as necessary to the health of persons, by 
restricting emissions during periods of air pollution emergencies. For 
these reasons, we propose to find that certain state statutes and 
regulations provide for authority comparable to that provided to the 
Administrator in CAA Sec.  303.
    Section 110(a)(2)(G) also requires a state to submit for EPA 
approval a contingency plan (also known as an emergency episode plan) 
to implement the air agency's emergency episode authority for any Air 
Quality Control Region (AQCR) within the state that is classified as 
Priority I, IA, or II for certain pollutants. See 40 CFR 51.150. For 
classifications for Maine, see 40 CFR 52.1021. AQCRs classified as 
Priority III do not require contingency plans. See 40 CFR 51.152(c). In 
general, contingency plans for Priority I, IA, and II areas must meet 
the applicable requirements of 40 CFR part 51, subpart H (40 CFR 51.150 
through 51.153) (``Prevention of Air Pollution Emergency Episodes'') 
for the relevant NAAQS, if the NAAQS is covered by those regulations. 
In the case of PM2.5, EPA has not promulgated regulations 
that provide the ambient levels to classify different priority levels 
for the 2012 standard (or any PM2.5 NAAQS). For the 2006 
PM2.5 NAAQS, EPA's 2009 Guidance recommends that states 
develop emergency episode plans for any area that has monitored and 
recorded 24-hour PM2.5 levels greater than 140 [mu]g/m\3\ 
since 2006. EPA's review of Maine's certified air quality data in AQS 
indicates that the highest 24-hour PM2.5 level recorded 
since 2006 was 83.3 [mu]g/m\3\, which occurred in 2017 in the town of 
Madawaska in Aroostook County.\11\ Therefore, EPA proposes that a 
specific contingency plan from Maine for PM2.5 is not 
necessary. Furthermore, although not expected, if PM2.5 
conditions in Maine were to change, Maine DEP has general authority to 
order a source to reduce or discontinue air pollution as required to 
protect the public health or safety or the environment, as discussed 
earlier. In addition, as a matter of practice, Maine posts on the 
internet daily forecasted PM2.5 levels through the EPA 
AirNow and EPA Enviroflash systems. Information regarding these two 
systems is available on EPA's website at www.airnow.gov. When levels 
are forecast to exceed the 24-hour PM2.5 standard in Maine, 
notices are sent out to Enviroflash participants, the media are alerted 
via a press release, and the National Weather Service (NWS) is alerted 
to issue an Air Quality Advisory through the normal NWS weather alert 
system. These actions are similar to the notification and communication 
requirements for contingency plans in 40 CFR 51.152.
---------------------------------------------------------------------------

    \11\ 24-hour and annual PM2.5 monitor values for 
individual monitoring sites throughout Maine are available at 
www.epa.gov/outdoor-air-quality-data/monitor-values-report.
---------------------------------------------------------------------------

    Therefore, EPA proposes that Maine, through the combination of 
statutes and regulations discussed above and participation in EPA's 
AirNow program, meets the applicable infrastructure SIP requirements of 
section 110(a)(2)(G) with respect to the 2012 PM2.5 NAAQS.

H. Section 110(a)(2)(H)--Future SIP Revisions

    This section requires that a state's SIP provide for revision from 
time to time as may be necessary to take into account changes in the 
NAAQS or availability of improved methods for attaining the NAAQS and 
whenever the EPA finds that the SIP is substantially inadequate.
    To address this requirement, Maine's infrastructure submittal 
references 38 MRSA Sec.  581, ``Declaration of findings and intent,'' 
which characterizes the state's laws regarding the Protection and 
Improvement of Air as an exercise of ``the police power of the State in 
a coordinated state-wide program to

[[Page 39968]]

control present and future sources of emission of air contaminants to 
the end that air polluting activities of every type shall be regulated 
in a manner that reasonably insures the continued health, safety and 
general welfare of all of the citizens of the State; protects property 
values and protects plant and animal life.'' In addition, we note that 
Maine DEP is required by statute to ``prevent, abate and control the 
pollution of the air [, to] preserve, improve and prevent diminution of 
the natural environment of the State [, and to] protect and enhance the 
public's right to use and enjoy the State's natural resources.'' See 38 
MRSA Sec.  341-A(1). Furthermore, Maine DEP is authorized to ``adopt, 
amend or repeal rules and emergency rules necessary for the 
interpretation, implementation and enforcement of any provision of law 
that the department is charged with administering.'' Id. Sec.  341-
H(2); see also id. Sec.  585-A (recognizing DEP's rulemaking authority 
to propose SIP revisions). These general authorizing statutes give 
Maine DEP the power to revise the Maine SIP from time to time as may be 
necessary to take account of changes in the NAAQS or availability of 
improved methods for attaining the NAAQS and whenever the EPA finds 
that the SIP is substantially inadequate.
    Consequently, EPA proposes that Maine meets the infrastructure SIP 
requirements of CAA section 110(a)(2)(H) for the 2012 PM2.5 
NAAQS.

I. Section 110(a)(2)(I)--Nonattainment Area Plan or Plan Revisions 
Under Part D

    The CAA requires that each plan or plan revision for an area 
designated as a nonattainment area meet the applicable requirements of 
part D of the CAA. Part D relates to nonattainment areas. EPA has 
determined that section 110(a)(2)(I) is not applicable to the 
infrastructure SIP process. Instead, EPA takes action on part D 
attainment plans through separate processes.

J. Section 110(a)(2)(J)--Consultation With Government Officials; Public 
Notifications; Prevention of Significant Deterioration; Visibility 
Protection

    The evaluation of the submission from Maine with respect to the 
requirements of CAA section 110(a)(2)(J) is described below.
Sub-Element 1: Consultation With Government Officials
    States must provide a process for consultation with local 
governments and Federal Land Managers (FLMs) in carrying out NAAQS 
implementation requirements.
    Pursuant to state law, Maine DEP is authorized to, among other 
things, ``educate the public on natural resource use, requirements and 
issues.'' See 38 MRSA Sec.  341-A(1). State law further provides that 
one of the purposes of the BEP is ``to provide for credible, fair and 
responsible public participation in department decisions,'' id. Sec.  
341-B, and authorizes it to ``cooperate with other state or federal 
departments or agencies to carry out'' its responsibilities, id. Sec.  
341-F(6). Furthermore, pursuant to Maine's EPA-approved regulations, 
Maine DEP is required to provide notice to relevant municipal officials 
and FLMs, among others, of DEP's preparation of a draft permit for a 
new or modified source. See 06-096 CMR Chapter 115, Sec.  IX(E)(3) 
(approved March 23, 1993 (58 FR 15422)). In addition, with respect to 
area reclassifications to Class I, II, or III for PSD purposes, the DEP 
is required to offer an opportunity for a public hearing and to consult 
with appropriate FLMs. See 38 MRSA Sec.  583-B; 06-096 CMR Chapter 114, 
Sec.  1(E). Maine's Transportation Conformity rule at 06-096 CMR 
Chapter 139 also provides procedures for interagency consultation, 
resolution of conflicts, and public consultation and notification. 
Finally, the Maine Administrative Procedures Act (Maine Revised 
Statutes Title 5, Chapter 375, subchapter 2) requires notification and 
provision of comment opportunities to all parties affected by proposed 
regulations. All SIP revisions undergo public notice and opportunity 
for hearing, which allows for comment by the public, including local 
governments.
    EPA proposes that Maine has met the infrastructure SIP requirements 
of this portion of section 110(a)(2)(J) with respect to the 2012 
PM2.5 NAAQS.
Sub-Element 2: Public Notification
    Section 110(a)(2)(J) also requires states to notify the public if 
NAAQS are exceeded in an area, advise the public of health hazards 
associated with exceedances, and enhance public awareness of measures 
that can be taken to prevent exceedances and of ways in which the 
public can participate in regulatory and other efforts to improve air 
quality.
    As mentioned elsewhere in this notice, state law directs Maine DEP 
to, among other things, ``prevent, abate and control the pollution of 
the air . . . improve and prevent diminution of the natural environment 
of the State[, and] protect and enhance the public's right to use and 
enjoy the State's natural resources.'' See 38 MRSA Sec.  341-A(1). 
State law also authorizes Maine DEP to ``educate the public on natural 
resource use, requirements and issues. Id. Sec.  341-A(1). To that end, 
Maine DEP makes real-time and historical air quality information 
available on its website.
    The agency also provides extended-range air-quality forecasts, 
which give the public advanced notice of air quality events. This 
advance notice allows the public to limit their exposure to unhealthy 
air and enact a plan to reduce pollution at home and at work. Maine DEP 
forecasts daily ozone and particle levels and issues these forecasts to 
the media and to the public via its website, telephone hotline, and 
email. Alerts include information about the health implications of 
elevated pollutant levels and list actions to reduce emissions and to 
reduce the public's exposure. In addition, Air Quality Data Summaries 
of the year's air-quality monitoring results are issued annually and 
posted on the Maine DEP Bureau of Air Quality website. Maine is also an 
active partner in EPA's AirNow and EnviroFlash air quality alert 
programs.
    EPA proposes that Maine has met the infrastructure SIP requirements 
of this portion of section 110(a)(2)(J) with respect to the 2012 
PM2.5 NAAQS.
Sub-Element 3: PSD
    State plans must meet the applicable requirements of part C of the 
CAA related to PSD. Maine's PSD program in the context of 
infrastructure SIPs has already been discussed in sections 110(a)(2)(C) 
and 110(a)(2)(D)(i)(II) and, as we have noted, fully satisfies the 
requirements of EPA's PSD implementation rules. Consequently, we 
propose to approve the PSD sub-element of section 110(a)(2)(J) for the 
2012 PM2.5 NAAQS, consistent with the actions we are 
proposing for sections 110(a)(2)(C) and 110(a)(2)(D)(i)(II).
Sub-Element 4: Visibility Protection
    With regard to the applicable requirements for visibility 
protection, states are subject to visibility and regional haze program 
requirements under part C of the CAA (which includes sections 169A and 
169B). 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, as noted in EPA's 2013 memorandum, we find that there is 
no new visibility obligation ``triggered'' under section 110(a)(2)(J) 
when a new NAAQS becomes effective. In other words, the visibility 
protection requirements of section 110(a)(2)(J) are not germane to 
infrastructure SIP submissions.

[[Page 39969]]

K. Section 110(a)(2)(K)--Air Quality Modeling/Data

    Section 110(a)(2)(K) of the Act requires that a SIP provide for the 
performance of such air quality modeling as the EPA Administrator may 
prescribe for the purpose of predicting the effect on ambient air 
quality of any emissions of any air pollutant for which EPA has 
established a NAAQS, and the submission, upon request, of data related 
to such air quality modeling. EPA has published modeling guidelines at 
40 CFR part 51, appendix W, for predicting the effects of emissions of 
criteria pollutants on ambient air quality. EPA has interpreted section 
110(a)(2)(K) to require a state to submit or reference the statutory or 
regulatory provisions that provide the air agency with the authority to 
conduct such air quality modeling and to provide such modeling data to 
EPA upon request. See 2013 Memorandum at 55.
    Maine state law implicitly authorizes Maine DEP to perform air 
quality modeling and provide such modeling data to EPA upon request. 
See 38 MRSA Sec. Sec.  341-A(1), 581, 591-B. In addition, Maine cites 
06-096 CMR Chapters 115 and 140, which provide that any modeling 
required for pre-construction permits and operating permits for minor 
and major sources be performed consistent with EPA-prescribed modeling 
guidelines at 40 CFR part 51, Appendix W. Chapters 115 and 140 also 
require that applicants submit data related to modeling to Maine DEP. 
See Email from Jeff Crawford, Maine DEP, to Alison Simcox, EPA (July 
17, 2018). In its July 6, 2016, submission, Maine DEP further states 
that it performs modeling, provides modeling data to EPA upon request, 
and will continue to do both. Consequently, the SIP provides for such 
air quality modeling as the Administrator has prescribed and for the 
submission, upon request, of data related to such modeling.
    EPA proposes that Maine meets the infrastructure SIP requirements 
of section 110(a)(2)(K) with respect to the 2012 PM2.5 
NAAQS.

L. Section 110(a)(2)(L)--Permitting Fees

    This section requires SIPs to mandate that each major stationary 
source pay permitting fees sufficient to cover the reasonable cost of 
reviewing, approving, implementing, and enforcing a permit.
    Maine implements and operates a Title V permit program, see 38 MRSA 
Sec.  353-A; 06-096 CMR Chapter 140, which was approved by EPA on 
October 18, 2001 (66 FR 52874). To gain this approval, Maine 
demonstrated the ability to collect sufficient fees to run the program. 
See 61 FR 49289, 49291 (September 19, 1996). Maine state law provides 
for the assessment of application fees from air emissions sources for 
permits for the construction or modification of air contaminant sources 
and sets permit fees. See 38 MRSA Sec. Sec.  353-A (establishing annual 
air emissions license fees), 352(2)(E) (providing that such fees ``must 
be assessed to support activities for air quality control including 
licensing, compliance, enforcement, monitoring, data acquisition and 
administration'').
    EPA proposes that Maine meets the infrastructure SIP requirements 
of section 110(a)(2)(L) for the 2012 PM2.5 NAAQS.

M. Section 110(a)(2)(M)--Consultation/Participation by Affected Local 
Entities

    To satisfy Element M, states must provide for consultation with, 
and participation by, local political subdivisions affected by the SIP. 
Maine's infrastructure submittal references the Maine Administrative 
Procedure Act, 5 MRSA Chapter 375, and explains that it requires public 
notice of all SIP revisions prior to their adoption, which allows for 
comment by the public, including local political subdivisions. In 
addition, Maine cites 38 MRSA Sec.  597, ``Municipal air pollution 
control,'' which provides that municipalities are not preempted from 
studying air pollution and adopting and enforcing ``air pollution 
control and abatement ordinances'' that are more stringent than those 
adopted by DEP or that ``touch on matters not dealt with'' by state 
law. Finally, Maine cites Chapter 9 of Maine's initial SIP, which was 
approved on May 31, 1972 (37 FR 10842), and contains intergovernmental 
cooperation provisions.
    EPA proposes that Maine meets the infrastructure SIP requirements 
of section 110(a)(2)(M) with respect to the 2012 PM2.5 
NAAQS.

IV

    EPA proposes to approve Maine's July 6, 2016, infrastructure SIP 
submission certifying that its current SIP is sufficient to meet the 
required infrastructure elements under sections 110(a)(1) and (2) for 
the 2012 PM2.5 NAAQS, with the exception of CAA section 
110(a)(2)(E)(ii) regarding State Boards and Conflicts of Interest, 
which we propose to conditionally approve, as described in more detail 
above. EPA's proposed actions regarding these infrastructure SIP 
requirements are contained in Table 1 below.

------------------------------------------------------------------------
                   Element                             2012 PM2.5
------------------------------------------------------------------------
(A): Emission limits and other control         A
 measures.
(B): Ambient air quality monitoring and data   A
 system.
(C)1: Enforcement of SIP measures............  A
(C)2: PSD program for major sources and major  A
 modifications.
(C)3: PSD program for minor sources and minor  A
 modifications.
(D)1: Contribute to nonattainment/interfere    A
 with maintenance of NAAQS.
(D)2: PSD....................................  A
(D)3: Visibility Protection..................  A
(D)4: Interstate Pollution Abatement.........  A
(D)5: International Pollution Abatement......  A
(E)1: Adequate resources.....................  A
(E)2: State boards...........................  CA
(E)3: Necessary assurances with respect to     NA
 local agencies.
(F): Stationary source monitoring system.....  A
(G): Emergency power.........................  A
(H): Future SIP revisions....................  A
(I): Nonattainment area plan or plan           NG
 revisions under part D.
(J)1: Consultation with government officials.  A
(J)2: Public notification....................  A
(J)3: PSD....................................  A
(J)4: Visibility protection..................  NG
(K): Air quality modeling and data...........  A
(L): Permitting fees.........................  A
(M): Consultation and participation by         A
 affected local entities.
------------------------------------------------------------------------

    In the above table, the key is as follows:

------------------------------------------------------------------------
 
------------------------------------------------------------------------
A.................................  Approve.
CA................................  Conditionally approve.
NA................................  Not applicable.
NG................................  Not germane to infrastructure SIPs.
------------------------------------------------------------------------

    EPA is soliciting public comments on the issues discussed in this 
proposal or on other relevant matters. These comments will be 
considered before EPA takes final action. Interested parties may 
participate in the Federal rulemaking procedure by submitting comments 
to this proposed rule by following the instructions listed in the 
ADDRESSES section of this Federal Register. As noted in Table 1, EPA is 
proposing to conditionally approve one portion of Maine's July 2016 
infrastructure SIP submission for the 2012 PM2.5 NAAQS 
pertaining to Element E(2) regarding State Boards and Conflicts of 
Interest.
    Under section 110(k)(4) of the Act, EPA may conditionally approve a 
plan based on a commitment from the State to adopt specific enforceable 
measures by a date certain, but not later than 1 year from the date of 
approval. If EPA conditionally approves the commitment

[[Page 39970]]

in a final rulemaking action, the State must meet its commitment to 
submit an update to its State Board rules that fully remedies the 
deficiency mentioned above under element E. If the State fails to do 
so, this action will become a disapproval one year from the date of 
final approval. EPA will notify the State by letter that this action 
has occurred. At that time, this commitment will no longer be a part of 
the approved Maine SIP. EPA subsequently will publish a document in the 
Federal Register notifying the public that the conditional approval 
automatically converted to a disapproval. If the State meets its 
commitment, within the applicable time frame, the conditionally 
approved submission will remain a part of the SIP until EPA takes final 
action approving or disapproving the submission. If EPA disapproves the 
new submittal, the conditionally approved infrastructure SIP elements 
will also be disapproved at that time. If EPA approves the submittal, 
the conditionally approved infrastructure SIP elements will be fully 
approved in their entirety and replace the conditionally approved 
program in the SIP.
    If the conditional approval is converted to a disapproval, the 
final disapproval triggers the Federal implementation plan (FIP) 
requirement under section 110(c).

V. Statutory and Executive Order Reviews

    Under the Clean Air Act, 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, EPA's role is to approve state 
choices, provided that they meet the criteria of the Clean Air Act. 
Accordingly, this proposed action merely approves 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 Orders 12866 (58 
FR 51735, October 4, 1993) and 13563 (76 FR 3821, January 21, 2011);
     This action is not expected to be an Executive Order 13771 
regulatory action because this action is not significant under 
Executive Order 12866.
     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 Clean Air Act; 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, the SIP is not approved to apply on any Indian 
reservation land or in any other area where EPA or an Indian tribe has 
demonstrated that a tribe has jurisdiction. In those areas of Indian 
country, the rule does not have tribal implications and will not impose 
substantial direct costs on tribal governments or preempt tribal law as 
specified by Executive Order 13175 (65 FR 67249, November 9, 2000).

List of Subjects in 40 CFR Part 52

    Environmental protection, Air pollution control, Carbon monoxide, 
Incorporation by reference, Intergovernmental relations, Lead, Nitrogen 
dioxide, Ozone, Particulate matter, Reporting and recordkeeping 
requirements, Sulfur oxides, Volatile organic compounds.

    Dated: August 6, 2018.
Alexandra Dunn,
Regional Administrator, EPA Region 1.
[FR Doc. 2018-17247 Filed 8-10-18; 8:45 am]
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                                                                         Federal Register / Vol. 83, No. 156 / Monday, August 13, 2018 / Proposed Rules                                                       39957

                                                      Authority: 39 U.S.C. 503; 3633.                     ADDRESSES:      Submit your comments,                 II. What guidance is EPA using to evaluate
                                                                                                          identified by Docket ID No. EPA–R01–                        this SIP submission?
                                                  ■ 2. Amend § 3015.7 by revising
                                                                                                          OAR–2018–0138 at https://                             III. EPA’s Review
                                                  paragraph (c) to read as follows:                                                                                A. Section 110(a)(2)(A)—Emission Limits
                                                                                                          www.regulations.gov, or via email to
                                                  § 3015.7    Standard for compliance.                                                                                and Other Control Measures
                                                                                                          conroy.dave@epa.gov. For comments                        B. Section 110(a)(2)(B)—Ambient Air
                                                  *     *     *    *     *                                submitted at Regulations.gov, follow the                    Quality Monitoring/Data System
                                                    (c)(1) Annually, on a fiscal year basis,              online instructions for submitting                       C. Section 110(a)(2)(C)—Program for
                                                  the appropriate share of institutional                  comments. Once submitted, comments                          Enforcement of Control Measures and for
                                                  costs to be recovered from competitive                  cannot be edited or removed from                            Construction or Modification of
                                                  products collectively, at a minimum,                    Regulations.gov. For either manner of                       Stationary Sources
                                                  will be calculated using the following                  submission, the EPA may publish any                      D. Section 110(a)(2)(D)—Interstate
                                                  formula:                                                comment received to its public docket.                      Transport
                                                                                                          Do not submit electronically any                         E. Section 110(a)(2)(E)—Adequate
                                                  ASt∂1 = ASt * (1 + %DCCMt¥1 +
                                                                                                          information you consider to be                              Resources
                                                       CGDt¥1)                                                                                                     F. Section 110(a)(2)(F)—Stationary Source
                                                                                                          Confidential Business Information (CBI)
                                                  Where,                                                                                                              Monitoring System
                                                                                                          or other information whose disclosure is                 G. Section 110(a)(2)(G)—Emergency
                                                  AS = Appropriate Share, expressed as a
                                                                                                          restricted by statute. Multimedia                           Powers
                                                        percentage and rounded to one decimal
                                                        place                                             submissions (audio, video, etc.) must be                 H. Section 110(a)(2)(H)—Future SIP
                                                  CCM = Competitive Contribution Margin                   accompanied by a written comment.                           Revisions
                                                  CGD = Competitive Growth Differential                   The written comment is considered the                    I. Section 110(a)(2)(I)—Nonattainment Area
                                                  t = Fiscal Year                                         official comment and should include                         Plan or Plan Revisions Under Part D
                                                  If t = 0 = FY 2007, AS = 5.5 percent                    discussion of all points you wish to                     J. Section 110(a)(2)(J)—Consultation With
                                                                                                          make. The EPA will generally not                            Government Officials; Public
                                                    (2) The Commission shall, as part of                                                                              Notifications; Prevention of Significant
                                                  each Annual Compliance                                  consider comments or comment
                                                                                                                                                                      Deterioration; Visibility Protection
                                                  Determination, calculate and report                     contents located outside of the primary                  K. Section 110(a)(2)(K)—Air Quality
                                                  competitive products’ appropriate share                 submission (i.e. on the web, cloud, or                      Modeling/Data
                                                  for the upcoming fiscal year using the                  other file sharing system). For                          L. Section 110(a)(2)(L)—Permitting Fees
                                                  formula set forth in paragraph (c)(1) of                additional submission methods, please                    M. Section 110(a)(2)(M)—Consultation/
                                                  this section.                                           contact the person identified in the FOR                    Participation by Affected Local Entities
                                                                                                          FURTHER INFORMATION CONTACT section.                  IV. Proposed Action
                                                  [FR Doc. 2018–17221 Filed 8–10–18; 8:45 am]                                                                   V. Statutory and Executive Order Reviews
                                                                                                          For the full EPA public comment policy,
                                                  BILLING CODE 7710–FW–P
                                                                                                          information about CBI or multimedia                   I. Background and Purpose
                                                                                                          submissions, and general guidance on
                                                                                                          making effective comments, please visit               A. What Maine SIP submission does this
                                                  ENVIRONMENTAL PROTECTION                                www.epa.gov/dockets/commenting-epa-                   rulemaking address?
                                                  AGENCY                                                  dockets. Publicly available docket
                                                                                                                                                                   This rulemaking addresses a July 6,
                                                                                                          materials are available at https://
                                                  40 CFR Part 52                                                                                                2016 submission from the Maine
                                                                                                          www.regulations.gov or at the U.S.
                                                                                                                                                                Department of Environmental Protection
                                                  [EPA–R01–OAR–2018–0138; FRL–9981–85–                    Environmental Protection Agency, EPA
                                                  Region 1]                                                                                                     (Maine DEP) regarding the infrastructure
                                                                                                          New England Regional Office, Office of
                                                                                                                                                                SIP requirements of the CAA for the
                                                                                                          Ecosystem Protection, Air Quality
                                                  Air Plan Approval; Maine;                                                                                     2012 fine particle (PM2.51) National
                                                                                                          Planning Unit, 5 Post Office Square—
                                                  Infrastructure State Implementation                                                                           Ambient Air Quality Standard
                                                                                                          Suite 100, Boston, MA. EPA requests
                                                  Plan Requirements for the 2012 PM2.5                                                                          (NAAQS). The primary, health-based
                                                                                                          that if at all possible, you contact the
                                                  NAAQS                                                                                                         annual standard is set at 12.0
                                                                                                          contact listed in the FOR FURTHER
                                                                                                                                                                micrograms per cubic meter (mg/m3) and
                                                  AGENCY:  Environmental Protection                       INFORMATION CONTACT section to
                                                                                                                                                                the 24-hour standard is set at 35 mg/m3.
                                                  Agency (EPA).                                           schedule your inspection. The Regional
                                                                                                                                                                See 78 FR 3086. Under sections
                                                  ACTION: Proposed rule.                                  Office’s official hours of business are
                                                                                                                                                                110(a)(1) and (2) of the CAA, states are
                                                                                                          Monday through Friday, 8:30 a.m. to
                                                                                                                                                                required to provide infrastructure SIP
                                                  SUMMARY:   The Environmental Protection                 4:30 p.m., excluding legal holidays.
                                                                                                                                                                submissions to ensure that state SIPs
                                                  Agency (EPA) is proposing to approve                    FOR FURTHER INFORMATION CONTACT:                      provide for implementation,
                                                  elements of a State Implementation Plan                 Alison C. Simcox, Air Quality Planning                maintenance, and enforcement of the
                                                  (SIP) submission from Maine that                        Unit, Air Programs Branch, U.S.                       NAAQS, including the 2012 PM2.5
                                                  addresses the infrastructure                            Environmental Protection Agency,                      NAAQS. On March 1, 2018, Maine DEP
                                                  requirements of the Clean Air Act (CAA                  Region 1, 5 Post Office Square, Suite                 submitted a letter providing clarifying
                                                  or Act) for the 2012 fine particle (PM2.5)              100 (Mail code OEP05–2), Boston, MA                   information for several of its
                                                  National Ambient Air Quality Standard                   02109—3912, tel. (617) 918–1684;                      infrastructure SIP submittals. In a July
                                                  (NAAQS). EPA is also proposing to                       simcox.alison@epa.gov.                                17, 2018 email, Maine DEP asked EPA
                                                  conditionally approve one sub-element
                                                                                                          SUPPLEMENTARY INFORMATION:                            to apply this letter to the infrastructure
                                                  of Maine’s infrastructure SIP. The
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                                                                                                          Throughout this document whenever                     SIP submittal for the 2012 PM2.5
                                                  infrastructure requirements are designed
                                                                                                          ‘‘we,’’ ‘‘us,’’ or ‘‘our’’ is used, we mean           NAAQS, as well. The information in the
                                                  to ensure that the structural components
                                                                                                          EPA.                                                  letter and email (both included in the
                                                  of each state’s air quality management
                                                                                                                                                                docket for this rulemaking) is mainly
                                                  program are adequate to meet the state’s                Table of Contents                                     applicable to Elements E, F, G, and K.
                                                  responsibilities with respect to this
                                                                                                          I. Background and Purpose
                                                  NAAQS under the CAA.                                       A. What Maine SIP submission does this               1 PM
                                                                                                                                                                        2.5 refers to particulate matter of 2.5 microns
                                                  DATES: Comments must be received on                          rulemaking address?                              or less in diameter, often referred to as ‘‘fine’’
                                                  or before September 12, 2018.                              B. What is the scope of this rulemaking?           particles.



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                                                  39958                  Federal Register / Vol. 83, No. 156 / Monday, August 13, 2018 / Proposed Rules

                                                  B. What is the scope of this rulemaking?                detailed history, interpretation, and                 approved SIP meet each of the
                                                     EPA is acting on a SIP submission                    rationale for EPA’s approach to                       requirements of section 110(a)(2) of the
                                                  from Maine DEP that addresses the                       infrastructure SIP requirements can be                CAA for the 2012 PM2.5 NAAQS. The
                                                  infrastructure requirements of CAA                      found in EPA’s May 13, 2014, proposed                 following review evaluates the state’s
                                                  sections 110(a)(1) and 110(a)(2) for the                rule entitled, ‘‘Infrastructure SIP                   submissions in light of section 110(a)(2)
                                                  2012 PM2.5 NAAQS.                                       Requirements for the 2008 Lead                        requirements and relevant EPA
                                                     The requirement for states to make a                 NAAQS’’ in the section, ‘‘What is the                 guidance.
                                                  SIP submission of this type arises out of               scope of this rulemaking?’’ See 79 FR                 A. Section 110(a)(2)(A)—Emission
                                                  CAA sections 110(a)(1) and 110(a)(2).                   27241 at 27242–45.                                    Limits and Other Control Measures
                                                  Pursuant to these sections, each state                  II. What guidance is EPA using to                        This section (also referred to in this
                                                  must submit a SIP that provides for the                 evaluate this SIP submission?                         action as an element) of the Act requires
                                                  implementation, maintenance, and                                                                              SIPs to include enforceable emission
                                                                                                             EPA highlighted the statutory
                                                  enforcement of each primary or                                                                                limits and other control measures,
                                                                                                          requirement to submit infrastructure
                                                  secondary NAAQS. States must make                                                                             means or techniques, schedules for
                                                                                                          SIPs within 3 years of promulgation of
                                                  such SIP submission ‘‘within 3 years (or                                                                      compliance, and other related matters.
                                                                                                          a new NAAQS in an October 2, 2007,
                                                  such shorter period as the Administrator                                                                      However, EPA has long interpreted
                                                                                                          guidance document entitled ‘‘Guidance
                                                  may prescribe) after the promulgation of                                                                      emission limits and control measures
                                                                                                          on SIP Elements Required Under
                                                  a new or revised NAAQS.’’ This                                                                                for attaining the standards as being due
                                                                                                          Sections 110(a)(1) and (2) for the 1997
                                                  requirement is triggered by the                                                                               when nonattainment planning
                                                                                                          8-hour Ozone and PM2.5 National
                                                  promulgation of a new or revised                                                                              requirements are due.3 In the context of
                                                  NAAQS and is not conditioned upon                       Ambient Air Quality Standards’’ (2007
                                                                                                          guidance). EPA has issued additional                  an infrastructure SIP, EPA is not
                                                  EPA’s taking any other action. Section                                                                        evaluating the existing SIP provisions
                                                  110(a)(2) includes the specific elements                guidance documents and memoranda,
                                                                                                          including a September 13, 2013,                       for this purpose. Instead, EPA is only
                                                  that ‘‘each such plan’’ must address.                                                                         evaluating whether the state’s SIP has
                                                     EPA commonly refers to such SIP                      memorandum entitled ‘‘Guidance on
                                                                                                          Infrastructure State Implementation                   basic structural provisions for the
                                                  submissions made for the purpose of                                                                           implementation of the NAAQS.
                                                  satisfying the requirements of CAA                      Plan (SIP) Elements under Clean Air Act
                                                                                                          Sections 110(a)(1) and 110(a)(2)’’ (2013                 Maine’s infrastructure submittal for
                                                  sections 110(a)(1) and 110(a)(2) as                                                                           this element cites Maine laws and
                                                  ‘‘infrastructure SIP’’ submissions.                     memorandum).2
                                                                                                             With respect to the ‘‘Good Neighbor’’              regulations that include enforceable
                                                  Although the term ‘‘infrastructure SIP’’                                                                      emission limitations and other control
                                                  does not appear in the CAA, EPA uses                    or interstate transport requirements for
                                                                                                          infrastructure SIPs, the most recent                  measures, means or techniques, as well
                                                  the term to distinguish this particular                                                                       as schedules and timetables for
                                                  type of SIP submission from                             relevant EPA guidance is a
                                                                                                          memorandum published on March 17,                     compliance to meet the applicable
                                                  submissions that are intended to satisfy                                                                      requirements of the CAA. Maine DEP
                                                  other SIP requirements under the CAA,                   2016, entitled ‘‘Information on the
                                                                                                          Interstate Transport ‘‘Good Neighbor’’                statutory authority with respect to air
                                                  such as ‘‘nonattainment SIP’’ or                                                                              quality is set out in Title 38 of the Maine
                                                  ‘‘attainment plan SIP’’ submissions to                  Provision for the 2012 Fine Particulate
                                                                                                          Matter National Ambient Air Quality                   Revised Statutes Annotated (‘‘MRSA’’),
                                                  address the nonattainment planning                                                                            Chapter 4, ‘‘Protection and
                                                  requirements of part D of title I of the                Standards under Clean Air Act Section
                                                                                                          110(a)(2)(D)(i)(I)’’ (2016 memorandum).               Improvement of Air.’’ Maine DEP’s
                                                  CAA.                                                                                                          general authority to promulgate
                                                     This rulemaking will not cover three                 The 2016 memorandum describes EPA’s
                                                                                                          past approach to addressing interstate                regulations is codified at 38 MRSA
                                                  substantive areas that are not integral to                                                                    Chapter 2, Subchapter 1, ‘‘Organization
                                                  acting on a state’s infrastructure SIP                  transport, and provides EPA’s general
                                                                                                                                                                and Powers,’’ 4 and the authority to
                                                  submission: (i) Existing provisions                     review of relevant modeling data and air
                                                                                                                                                                establish emission standards and
                                                  related to excess emissions during                      quality projections as they relate to the
                                                                                                                                                                regulations implementing ambient air
                                                  periods of start-up, shutdown, or                       2012 annual PM2.5 NAAQS. The 2016
                                                                                                                                                                quality standards is contained in 38
                                                  malfunction at sources (‘‘SSM’’                         memorandum provides information
                                                                                                                                                                MRSA Chapter 4, sections 585 and 585–
                                                  emissions) that may be contrary to the                  relevant to EPA Regional office review
                                                                                                                                                                A.
                                                  CAA and EPA’s policies addressing                       of the CAA section 110(a)(2)(D)(i)(I)                    The Maine submittal cites two dozen
                                                  such excess emissions; (ii) existing                    ‘‘Good Neighbor’’ provision                           specific rules that the state has adopted
                                                  provisions related to ‘‘director’s                      requirements in infrastructure SIPs with              to control the emissions of criteria
                                                  variance’’ or ‘‘director’s discretion’’ that            respect to the 2012 annual PM2.5                      pollutants and precursors, including
                                                  purport to permit revisions to SIP-                     NAAQS. This rulemaking considers                      PM2.5. A few of these rules, with their
                                                  approved emissions limits with limited                  information provided in that                          EPA-approval citation, are listed here:
                                                  public process or without requiring                     memorandum.                                           06–096 Code of Maine Regulations
                                                  further approval by EPA, that may be                    III. EPA’s review                                     (‘‘CMR’’) Chapter 102, ‘‘Open Burning’’
                                                  contrary to the CAA (‘‘director’s                                                                             (73 FR 9459, February 21, 2008);
                                                                                                             EPA is soliciting comment on our
                                                  discretion’’); and, (iii) existing                                                                            Chapter 103, ‘‘Fuel Burning Equipment
                                                                                                          evaluation of Maine’s infrastructure SIP
                                                  provisions for Prevention of Significant
                                                                                                          submission in this notice of proposed
                                                  Deterioration (PSD) programs that may                                                                            3 See, e.g., EPA’s final rule on ‘‘National Ambient
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                                                                                                          rulemaking. In Maine’s submission, a                  Air Quality Standards for Lead.’’ 73 FR 66964,
                                                  be inconsistent with current
                                                                                                          detailed list of Maine Laws and                       67034 (November 12, 2008).
                                                  requirements of EPA’s ‘‘Final New
                                                                                                          previously SIP-approved Air Quality                      4 Maine DEP consists of the Board of
                                                  Source Review (NSR) Improvement                                                                               Environmental Protection (‘‘Board’’) and a
                                                                                                          Regulations show precisely how the
                                                  Rule,’’ 67 FR 80186 (December 31,                                                                             Commissioner. 38 MRSA § 341–A(2). In general, the
                                                                                                          various components of its EPA-                        Board is authorized to promulgate ‘‘major
                                                  2002), as amended by 72 FR 32526 (June
                                                                                                                                                                substantive rules’’ and the Commissioner has
                                                  13, 2007) (‘‘NSR Reform’’). Instead, EPA                  2 This memorandum and other referenced              rulemaking authority with respect to rules that are
                                                  has the authority to address each one of                guidance documents and memoranda are included         ‘‘not designated as major substantive rules.’’ Id.
                                                  these substantive areas separately. A                   in the docket for this action.                        § 341–H.



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                                                                         Federal Register / Vol. 83, No. 156 / Monday, August 13, 2018 / Proposed Rules                                            39959

                                                  Particulate Emission Standard’’ (50 FR                  C. Section 110(a)(2)(C)—Program for                      EPA’s ‘‘Final Rule to Implement the 8-
                                                  7770, February 26, 1985); Chapter 104,                  Enforcement of Control Measures and                   Hour Ozone National Ambient Air
                                                  ‘‘Incinerator Particulate Emission                      for Construction or Modification of                   Quality Standard—Phase 2; Final Rule
                                                  Standard’’ (37 FR 10842, May 31, 1972);                 Stationary Sources                                    to Implement Certain Aspects of the
                                                  and Chapter 150, ‘‘Control of Emissions                    States are required to include a                   1990 Amendments Relating to New
                                                  from Outdoor Wood Boilers’’ (April 24,                                                                        Source Review and Prevention of
                                                                                                          program providing for enforcement of
                                                  2012). The Maine regulations listed                                                                           Significant Deterioration as They Apply
                                                                                                          all SIP measures and the regulation of
                                                  above were previously approved into                                                                           in Carbon Monoxide, Particulate Matter,
                                                                                                          construction of new or modified
                                                  the Maine SIP by EPA. See 40 CFR                                                                              and Ozone NAAQS; Final Rule for
                                                                                                          stationary sources to meet NSR
                                                                                                                                                                Reformulated Gasoline’’ (Phase 2 Rule)
                                                  52.1020.                                                requirements under PSD and
                                                                                                                                                                was published on November 29, 2005
                                                     EPA proposes that Maine meets the                    nonattainment new source review
                                                                                                                                                                (70 FR 71612). Among other
                                                  infrastructure SIP requirements of                      (NNSR) programs. Part C of the CAA
                                                                                                                                                                requirements, the Phase 2 Rule
                                                  section 110(a)(2)(A) with respect to the                (sections 160–169B) addresses PSD,
                                                                                                                                                                obligated states to revise their PSD
                                                  2012 PM2.5 NAAQS. As previously                         while part D of the CAA (sections 171–
                                                                                                                                                                programs to explicitly identify NOX as
                                                  noted, EPA is not proposing to approve                  193) addresses NNSR requirements.
                                                                                                                                                                a precursor to ozone. See 70 FR 71679.
                                                                                                             The evaluation of each state’s                     This requirement is codified in 40 CFR
                                                  or disapprove any existing state
                                                                                                          submission addressing the                             51.166, and requires that states submit
                                                  provisions or rules related to SSM or
                                                                                                          infrastructure SIP requirements of                    SIP revisions incorporating the
                                                  director’s discretion in the context of                 section 110(a)(2)(C) covers the
                                                  section 110(a)(2)(A).                                                                                         requirements of the rule, including
                                                                                                          following: (i) Enforcement of SIP                     provisions that would treat NOX as a
                                                  B. Section 110(a)(2)(B)—Ambient Air                     measures; (ii) PSD program for major                  precursor to ozone provisions. These
                                                  Quality Monitoring/Data System                          sources and major modifications; and                  SIP revisions were to have been
                                                                                                          (iii) a permit program for minor sources              submitted to EPA by states by June 15,
                                                    This section requires SIPs to provide                 and minor modifications.                              2007. See 70 FR 71683.
                                                  for establishment and operation of                                                                               Maine has adopted, and EPA has
                                                                                                          Sub-Element 1: Enforcement of SIP
                                                  appropriate devices, methods, systems,                                                                        approved, rules addressing the changes
                                                                                                          Measures
                                                  and procedures necessary to monitor,                                                                          to 40 CFR 51.166 required by the Phase
                                                  compile, and analyze ambient air                           Maine DEP identifies the sources of                2 Rule, including amending its SIP to
                                                  quality data, and make such data                        its authority to enforce the measures it              include NOX and VOC as precursor
                                                  available to EPA upon request. Each                     cites to satisfy Element A (Emission                  pollutants to ozone, in order to define
                                                  year, states submit annual air                          limits and other control measures) as 38              what constitutes a ‘‘significant’’ increase
                                                  monitoring network plans to EPA for                     MRSA Section 347–A, ‘‘Violations,’’ 38                in actual emissions from a source of air
                                                  review and approval. EPA’s review of                    MRSA Section 347–C, ‘‘Right of                        contaminants. See 81 FR 50353 (August
                                                  these annual monitoring plans includes                  inspection and entry,’’ 38 MRSA                       1, 2016). Therefore, EPA proposes to
                                                                                                          Section 348, ‘‘Judicial Enforcement,’’ 38             approve Maine’s infrastructure SIP
                                                  our evaluation of whether the state: (i)
                                                                                                          MRSA Section 349, ‘‘Penalties,’’ and                  submission for the 2012 PM2.5 NAAQS
                                                  Monitors air quality at appropriate
                                                                                                          06–096 CMR Chapter 115, ‘‘Major and                   with respect to the requirements of the
                                                  locations throughout the state using                    Minor Source Air Emission License
                                                  EPA-approved Federal Reference                                                                                Phase 2 Rule and the PSD sub-element
                                                                                                          Regulations,’’ which include processes                of section 110(a)(2)(C).
                                                  Methods or Federal Equivalent Method                    for both civil and criminal enforcement                  On May 16, 2008 (73 FR 28321), EPA
                                                  monitors; (ii) submits data to EPA’s Air                actions. Construction of new or                       issued the Final Rule on the
                                                  Quality System (AQS) in a timely                        modified stationary sources in Maine is               ‘‘Implementation of the New Source
                                                  manner; and (iii) provides EPA Regional                 regulated by 06–096 CMR Chapter 115,                  Review (NSR) Program for Particulate
                                                  Offices with prior notification of any                  ‘‘Major and Minor Source Air Emission                 Matter Less than 2.5 Micrometers
                                                  planned changes to monitoring sites or                  License Regulations,’’ which requires                 (PM2.5)’’ (2008 NSR Rule). The 2008
                                                  the network plan.                                       best available control technology                     NSR Rule finalized several new
                                                    Pursuant to authority granted to it by                (BACT) controls for PSD sources,                      requirements for SIPs to address sources
                                                  38 MRSA §§ 341–A(1) and 584–A,                          including for PM2.5. EPA proposes that                that emit direct PM2.5 and other
                                                  Maine DEP operates an air quality                       Maine has met the enforcement                         pollutants that contribute to secondary
                                                  monitoring network, and EPA approved                    requirement of section 110(a)(2)(C) with              PM2.5 formation. One of these
                                                  the state’s most recent Annual Air                      respect to the 2012 PM2.5 NAAQS.                      requirements is for NSR permits to
                                                  Monitoring Network Plan for PM2.5 on                                                                          address pollutants responsible for the
                                                                                                          Sub-Element 2: PSD Program for Major
                                                  August 23, 2017.5 Furthermore, Maine                                                                          secondary formation of PM2.5, otherwise
                                                                                                          Sources and Major Modifications.
                                                                                                                                                                known as precursors. In the 2008 rule,
                                                  DEP populates AQS with air quality                        Prevention of significant deterioration             EPA identified precursors to PM2.5 for
                                                  monitoring data in a timely manner, and                 (PSD) applies to new major sources or                 the PSD program to be SO2 and NOX
                                                  provides EPA with prior notification                    modifications made to major sources for               (unless the state demonstrates to the
                                                  when considering a change to its                        pollutants where the area in which the                Administrator’s satisfaction or EPA
                                                  monitoring network or plan. EPA                         source is located is in attainment of, or             demonstrates that NOX emissions in an
                                                  proposes that Maine DEP meets the                       unclassifiable with regard to, the                    area are not a significant contributor to
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                                                  infrastructure SIP requirements of                      relevant NAAQS. Maine DEP’s EPA-                      that area’s ambient PM2.5
                                                  section 110(a)(2)(B) with respect to the                approved PSD rules, contained at 06–                  concentrations). The 2008 NSR Rule
                                                  2012 PM2.5 NAAQS.                                       096 CMR Chapter 115, ‘‘Major and                      also specifies that VOCs are not
                                                                                                          Minor Source Air Emission License                     considered to be precursors to PM2.5 in
                                                                                                          Regulations,’’ contain provisions that                the PSD program unless the state
                                                                                                          address applicable requirements for all               demonstrates to the Administrator’s
                                                    5 See EPA approval letter located in the docket for   regulated NSR pollutants, including                   satisfaction or EPA demonstrates that
                                                  this action.                                            Greenhouse Gases (GHGs).                              emissions of VOCs in an area are


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                                                  39960                  Federal Register / Vol. 83, No. 156 / Monday, August 13, 2018 / Proposed Rules

                                                  significant contributors to that area’s                    The 2008 NSR Rule did not require                  40 CFR 52.21(b)(15)(i). On August 1,
                                                  ambient PM2.5 concentrations.                           states to immediately account for gases               2016 (81 FR 50353), EPA approved
                                                    The explicit references to SO2, NOX,                  that could condense to form particulate               revisions to the Maine SIP that address
                                                  and VOCs as they pertain to secondary                   matter, known as condensables, in PM2.5               EPA’s 2010 NSR rule. Therefore, with
                                                  PM2.5 formation are codified at 40 CFR                  and PM10 emission limits in NSR                       respect to the 2010 NSR Rule and the
                                                  51.166(b)(49)(i)(b) and 40 CFR                          permits. Instead, EPA determined that                 PSD sub-element of section 110(a)(2)(C),
                                                  52.21(b)(50)(i)(b). As part of identifying              states had to account for PM2.5 and PM10              we are proposing to approve Maine’s
                                                  pollutants that are precursors to PM2.5,                condensables for applicability                        infrastructure SIP submittal for the 2012
                                                  the 2008 NSR Rule also required states                  determinations and in establishing                    PM2.5 NAAQS.
                                                  to revise the definition of ‘‘significant’’             emissions limitations for PM2.5 and                      With respect to Elements C and J, EPA
                                                  as it relates to a net emissions increase               PM10 in PSD permits beginning on or                   interprets the Clean Air Act to require
                                                  or the potential of a source to emit                    after January 1, 2011. See 73 FR 28321                each state to make an infrastructure SIP
                                                  pollutants. Specifically, 40 CFR                        at 28334. This requirement is codified                submission for a new or revised NAAQS
                                                  51.166(b)(23)(i) and 40 CFR                             in 40 CFR 51.166(b)(49)(i)(a) and 40                  that demonstrates that the air agency
                                                  52.21(b)(23)(i) define ‘‘significant’’ for              CFR 52.21(b)(50)(i)(a).                               has a complete PSD permitting program
                                                  PM2.5 to mean the following emissions                      Maine’s SIP-approved PSD program                   meeting the current requirements for all
                                                  rates: 10 tons per year (tpy) of direct                 defines PM2.5 and PM10 emissions in                   regulated NSR pollutants. The
                                                  PM2.5; 40 tpy of SO2; and 40 tpy of NOX                 such a manner that gaseous emissions                  requirements of Element D(i)(II) may
                                                  (unless the state demonstrates to the                   which would condense under ambient                    also be satisfied by demonstrating the
                                                  Administrator’s satisfaction or EPA                     conditions are treated in an equivalent               air agency has a complete PSD
                                                  demonstrates that NOX emissions in an                   manner as required by EPA’s definition                permitting program correctly addressing
                                                  area are not a significant contributor to               of ‘‘regulated air pollutant’’ in 40 CFR              all regulated NSR pollutants. Maine has
                                                  that area’s ambient PM2.5                               51.166(b)(49)(i)(a). EPA approved these               shown that it currently has a PSD
                                                  concentrations). The deadline for states                definitions into the SIP on August 1,                 program in place that covers all
                                                  to submit SIP revisions to their PSD                    2016 (81 FR 50353). Consequently, we                  regulated NSR pollutants, including
                                                  programs incorporating these changes                    propose that the state’s PSD program                  GHGs.
                                                                                                          adequately accounts for the condensable                  On June 23, 2014, the United States
                                                  was May 16, 2011. See 73 FR 28321 at
                                                                                                          fraction of PM2.5 and PM10.                           Supreme Court issued a decision
                                                  28341.6
                                                                                                             Therefore, we propose to approve                   addressing the application of PSD
                                                    On August 1, 2016 (81 FR 50353),                      Maine’s infrastructure SIP submittal for              permitting requirements to GHG
                                                  EPA approved revisions to Maine’s PSD                   the 2012 PM2.5 NAAQS with respect to                  emissions. Utility Air Regulatory Group
                                                  program that identify SO2 and NOX as                    the requirements of the 2008 NSR Rule                 v. Environmental Protection Agency,
                                                  precursors to PM2.5 and revise the state’s              and the PSD sub-element of section                    134 S.Ct. 2427. The Supreme Court said
                                                  regulatory definition of ‘‘significant’’ for            110(a)(2)(C).                                         that EPA may not treat GHGs as an air
                                                  PM2.5 to mean 10 tons per year (tpy) or                    On October 20, 2010 (75 FR 64864),                 pollutant for purposes of determining
                                                  more of direct PM2.5 emissions, 40 tpy                  EPA issued the final rule on the                      whether a source is a major source
                                                  or more of SO2 emissions, or 40 tpy or                  ‘‘Prevention of Significant Deterioration             required to obtain a PSD permit. The
                                                  more of NOX emissions.                                  (PSD) for Particulate Matter Less Than                Court also said that EPA could continue
                                                                                                          2.5 Micrometers (PM2.5)—Increments,                   to require that PSD permits, otherwise
                                                     6 EPA notes that on January 4, 2013, the U.S.
                                                                                                          Significant Impact Levels (SILs) and                  required based on emissions of
                                                  Court of Appeals for the D.C. Circuit, in Natural       Significant Monitoring Concentration
                                                  Resources Defense Council v. EPA, 706 F.3d 428
                                                                                                                                                                pollutants other than GHGs, contain
                                                  (DC Cir.), held that EPA should have issued the         (SMC)’’ (2010 NSR Rule). This rule                    limitations on GHG emissions based on
                                                  2008 NSR Rule in accordance with the CAA’s              established several components for                    the application of BACT.
                                                  requirements for PM10 nonattainment areas (Title I,     making PSD permitting determinations                     In accordance with the Supreme
                                                  part D, subpart 4), and not the general requirements    for PM2.5, including a system of                      Court decision, on April 10, 2015, the
                                                  for nonattainment areas under subpart 1 (Natural
                                                  Resources Defense Council v. EPA, No. 08–1250).
                                                                                                          ‘‘increments,’’ which is the mechanism                U.S. Court of Appeals for the District of
                                                  As the subpart 4 provisions apply only to               used to estimate significant                          Columbia Circuit (the D.C. Circuit)
                                                  nonattainment areas, EPA does not consider the          deterioration of ambient air quality for              issued an amended judgment vacating
                                                  portions of the 2008 rule that address requirements     a pollutant. These increments are                     the regulations that implemented Step 2
                                                  for PM2.5 attainment and unclassifiable areas to be
                                                  affected by the court’s opinion. Moreover, EPA does
                                                                                                          codified in 40 CFR 51.166(c) and 40                   of the EPA’s PSD and Title V
                                                  not anticipate the need to revise any PSD               CFR 52.21(c). On June 24, 2014 (79 FR                 Greenhouse Gas Tailoring Rule, but not
                                                  requirements promulgated by the 2008 NSR rule in        35695), EPA approved PM2.5 increments                 the regulations that implement Step 1 of
                                                  order to comply with the court’s decision.              in 06–096 CMR Chapter 110 of Maine’s                  that rule. Step 1 of the Tailoring Rule
                                                  Accordingly, EPA’s approval of Maine’s
                                                  infrastructure SIP as to Elements C, D(i)(II), or J
                                                                                                          regulations.                                          covers sources that are required to
                                                  with respect to the PSD requirements promulgated           The 2010 NSR Rule also established a               obtain a PSD permit based on emissions
                                                  by the 2008 implementation rule does not conflict       new ‘‘major source baseline date’’ for                of pollutants other than GHGs. Step 2
                                                  with the court’s opinion.                               PM2.5 as October 20, 2010, and a new                  applied to sources that emitted only
                                                     The Court’s decision with respect to the             trigger date for PM2.5 of October 20,                 GHGs above the thresholds triggering
                                                  nonattainment NSR requirements promulgated by
                                                  the 2008 implementation rule also does not affect
                                                                                                          2011 in the definition of ‘‘minor source              the requirement to obtain a PSD permit.
                                                  EPA’s action on the present infrastructure action.      baseline date.’’ These revisions are                  The amended judgment preserves,
                                                  EPA interprets the CAA to exclude nonattainment         codified in 40 CFR 51.166(b)(14)(i)(c)                without the need for additional
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                                                  area requirements, including requirements               and (b)(14)(ii)(c), and 40 CFR                        rulemaking by EPA, the application of
                                                  associated with a nonattainment NSR program,
                                                  from infrastructure SIP submissions due three years
                                                                                                          52.21(b)(14)(i)(c) and (b)(14)(ii)(c).                the Best Available Control Technology
                                                  after adoption or revisitation of a NAAQS. Instead,     Lastly, the 2010 NSR Rule revised the                 (BACT) requirement to GHG emissions
                                                  these elements are typically referred to as             definition of ‘‘baseline area’’ to include            from Step 1 or ‘‘anyway’’ sources. With
                                                  nonattainment SIP or attainment plan elements,          a level of significance (SIL) of 0.3                  respect to Step 2 sources, the D.C.
                                                  which would be due by the dates statutorily
                                                  prescribed under subpart 2 through 5 under part D,
                                                                                                          micrograms per cubic meter (mg/m3),                   Circuit’s amended judgment vacated the
                                                  extending as far as 10 years following designations     annual average, for PM2.5. This change is             regulations at issue in the litigation,
                                                  for some elements.                                      codified in 40 CFR 51.166(b)(15)(i) and               including 40 CFR 51.166(b)(48)(v), ‘‘to


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                                                                         Federal Register / Vol. 83, No. 156 / Monday, August 13, 2018 / Proposed Rules                                          39961

                                                  the extent they require a stationary                    Sub-Element 3: Preconstruction                        NAAQS in any downwind state. EPA
                                                  source to obtain a PSD permit if                        Permitting for Minor Sources and Minor                commonly refers to these requirements
                                                  greenhouse gases are the only pollutant                 Modifications                                         as prong 1 (significant contribution to
                                                  (i) that the source emits or has the                      To address the pre-construction                     nonattainment) and prong 2
                                                  potential to emit above the applicable                  regulation of the modification and                    (interference with maintenance), or
                                                  major source thresholds, or (ii) for                    construction of minor stationary sources              jointly as the ‘‘Good Neighbor’’ or
                                                  which there is a significant emission                   and minor modifications of major                      ‘‘transport’’ provisions of the CAA. This
                                                  increase from a modification.’’                         stationary sources, an infrastructure SIP             rulemaking proposes action on the
                                                                                                          submission should identify the existing               portions of Maine’s July 6, 2016, SIP
                                                     On August 19, 2015, EPA amended its
                                                                                                          EPA-approved SIP provisions and/or                    submission that address the prong 1 and
                                                  PSD and title V regulations to remove                                                                         2 requirements with respect to the 2012
                                                  from the Code of Federal Regulations                    include new provisions that govern the
                                                                                                          minor source pre-construction program                 PM2.5 NAAQS.
                                                  portions of those regulations that the
                                                                                                          that regulate emissions of the relevant                  EPA has developed a consistent
                                                  D.C. Circuit specifically identified as
                                                                                                          NAAQS pollutants. EPA last approved                   framework for addressing the prong 1
                                                  vacated. EPA intends to further revise                                                                        and 2 interstate-transport requirements
                                                  the PSD and title V regulations to fully                revisions to Maine’s minor NSR
                                                                                                          program on August 1, 2016 (81 FR                      with respect to the PM2.5 NAAQS in
                                                  implement the Supreme Court and D.C.                                                                          several previous federal rulemakings.
                                                  Circuit rulings in a separate rulemaking.               50353). Maine and EPA rely on the
                                                                                                          existing minor NSR program in 06–096                  The four basic steps of that framework
                                                  This future rulemaking will include                                                                           include: (1) Identifying downwind
                                                  revisions to additional definitions in the              CMR Chapter 115 to ensure that new
                                                                                                          and modified sources not captured by                  receptors that are expected to have
                                                  PSD regulations.                                                                                              problems attaining or maintaining the
                                                                                                          the major NSR permitting programs do
                                                     Some states have begun to revise their               not interfere with attainment and                     NAAQS; (2) identifying which upwind
                                                  existing SIP-approved PSD programs in                   maintenance of the 2012 PM2.5 NAAQS.                  states contribute to these identified
                                                  light of these court decisions, and some                  We are proposing to find that Maine                 problems in amounts sufficient to
                                                  states may prefer not to initiate this                  has met the requirement to have a SIP-                warrant further review and analysis; (3)
                                                  process until they have more                            approved minor new source review                      for states identified as contributing to
                                                  information about the additional                        permit program as required under                      downwind air quality problems,
                                                  planned revisions to EPA’s PSD                          Section 110(a)(2)(C) for the 2012 PM2.5               identifying upwind emissions
                                                  regulations. EPA is not expecting states                NAAQS.                                                reductions necessary to prevent an
                                                  to have revised their PSD programs in                                                                         upwind state from significantly
                                                                                                          D. Section 110(a)(2)(D)—Interstate                    contributing to nonattainment or
                                                  anticipation of EPA’s additional actions
                                                                                                          Transport.                                            interfering with maintenance of the
                                                  to revise its PSD program rules in
                                                  response to the court decisions for                        This section contains a                            NAAQS downwind; and (4) for states
                                                  purposes of infrastructure SIP                          comprehensive set of air quality                      that are found to have emissions that
                                                                                                          management elements pertaining to the                 significantly contribute to
                                                  submissions. Instead, EPA is only
                                                                                                          transport of air pollution with which                 nonattainment or interfere with
                                                  evaluating such submissions to assure
                                                                                                          states must comply. It covers the                     maintenance of the NAAQS downwind,
                                                  that the state’s program addresses GHGs
                                                                                                          following five topics, categorized as sub-            reducing the identified upwind
                                                  consistent with both the court decision,
                                                                                                          elements: Sub-element 1, Significant                  emissions through adoption of
                                                  and the revisions to PSD regulations                                                                          permanent and enforceable measures.
                                                  that EPA has completed at this time.                    contribution to nonattainment, and
                                                                                                          interference with maintenance of a                    This framework was most recently
                                                     On October 5, 2012 (77 FR 49404),                    NAAQS; Sub-element 2, PSD; Sub-                       applied with respect to PM2.5 in the
                                                  EPA approved revisions to the Maine                     element 3, Visibility protection; Sub-                Cross-State Air Pollution Rule (CSAPR),
                                                  SIP that modified Maine’s PSD program                   element 4, Interstate pollution                       which addressed both the 1997 and
                                                  to establish appropriate emission                       abatement; and Sub-element 5,                         2006 PM2.5 standards, as well as the
                                                  thresholds for determining which new                    International pollution abatement. Sub-               1997 ozone standard. See 76 FR 48208
                                                  stationary sources and modification                     elements 1 through 3 above are found                  (August 8, 2011).
                                                  projects become subject to Maine’s PSD                  under section 110(a)(2)(D)(i) of the Act,                EPA’s analysis for CSAPR, conducted
                                                  permitting requirements for their GHG                   and these items are further categorized               consistent with the four-step framework,
                                                  emissions. Therefore, EPA has                           into the four prongs discussed below,                 included air-quality modeling that
                                                  determined that Maine’s SIP is                          two of which are found within sub-                    evaluated the impacts of 38 eastern
                                                  sufficient to satisfy Elements C, D(i)(II),             element 1. Sub-elements 4 and 5 are                   states on identified receptors in the
                                                  and J with respect to GHGs. The                         found under section 110(a)(2)(D)(ii) of               eastern United States. EPA indicated
                                                  Supreme Court decision and subsequent                   the Act and include provisions insuring               that, for step 2 of the framework, states
                                                  D.C. Circuit judgment do not prevent                    compliance with sections 115 and 126                  with impacts on downwind receptors
                                                  EPA’s approval of Maine’s infrastructure                of the Act relating to interstate and                 that are below the contribution
                                                  SIP as to the requirements of Element C,                international pollution abatement.                    threshold of 1% of the relevant NAAQS
                                                  as well as sub-elements D(i)(II), and                                                                         would not be considered to significantly
                                                                                                          Sub-Element 1: Section                                contribute to nonattainment or interfere
                                                  J(iii).                                                 110(a)(2)(D)(i)(I)—Contribute to                      with maintenance of the relevant
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                                                     For the purposes of this rulemaking                  Nonattainment (Prong 1) and Interfere                 NAAQS, and would, therefore, not be
                                                  on Maine’s infrastructure SIP, EPA                      With Maintenance of the NAAQS (Prong                  included in CSAPR. See 76 FR 48220.
                                                  reiterates that NSR Reform is not in the                2)                                                    EPA further indicated that such states
                                                  scope of these actions.                                   Section 110(a)(2)(D)(i)(I) of the CAA               could rely on EPA’s analysis for CSAPR
                                                     In summary, we are proposing to                      requires a SIP to prohibit any emissions              as technical support in order to
                                                  approve Maine’s submittal for this sub-                 activity in the state that will contribute            demonstrate that their existing or future
                                                  element with respect to the 2012 PM2.5                  significantly to nonattainment or                     interstate transport SIP submittals are
                                                  NAAQS.                                                  interfere with maintenance of the                     adequate to address the transport


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                                                  39962                  Federal Register / Vol. 83, No. 156 / Monday, August 13, 2018 / Proposed Rules

                                                  requirements of 110(a)(2)(D)(i)(I) with                 attainment deadline for moderate PM2.5                NAAQS. The state’s submission relied
                                                  regard to the relevant NAAQS. Id.                       areas). The memorandum also indicates                 in part on EPA’s analysis performed for
                                                     In addition, as noted above, on March                that for certain states with incomplete               the CSAPR rulemaking to conclude that
                                                  17, 2016, EPA released the 2016                         ambient monitoring data, additional                   the state will not significantly
                                                  memorandum to provide information to                    information including the latest                      contribute to nonattainment or interfere
                                                  states as they develop SIPs addressing                  available data, should be analyzed to                 with maintenance of the 2012 PM2.5
                                                  the Good Neighbor provision as it                       determine whether there are potential                 NAAQS in any downwind area.
                                                  pertains to the 2012 PM2.5 NAAQS.                       downwind air quality problems that                      EPA analyzed the state’s July 2016
                                                  Consistent with step 1 of the framework,                may be impacted by transported                        submittal to determine whether it fully
                                                  the 2016 memorandum provides                            emissions. This rulemaking considers                  addresses the prong 1 and 2 transport
                                                  projected future-year annual PM2.5                      these analyses for Maine, as well as                  provisions with respect to the 2012
                                                  design values for monitors throughout                   additional analysis conducted by EPA                  PM2.5 NAAQS. As discussed below, EPA
                                                  the country based on quality-assured                    during review of Maine’s submittal.                   concludes that emissions of PM2.5 and
                                                  and certified ambient-monitoring data                      To develop the projected values                    PM2.5 precursors (NOX and SO2) in
                                                  and recent air-quality modeling and                     presented in the memorandum, EPA                      Maine will not significantly contribute
                                                  explains the methodology used to                        used the results of nationwide                        to nonattainment or interfere with
                                                  develop these projected design values.                  photochemical air-quality modeling that               maintenance of the 2012 PM2.5 NAAQS
                                                  The memorandum also describes how                       it recently performed to support several              in any other state.
                                                  the projected values can be used to help                rulemakings related to the ozone
                                                                                                                                                                Analysis of Maine’s Submission for the
                                                  determine which monitors should be                      NAAQS. Base-year modeling was
                                                                                                                                                                2012 PM2.5 NAAQS
                                                  further evaluated to potentially address                performed for 2011. Future-year
                                                  if emissions from other states                          modeling was performed for 2017 to                      As noted above, the modeling
                                                  significantly contribute to                             support the proposed CSAPR Update for                 discussed in EPA’s 2016 memorandum
                                                  nonattainment or interfere with                         the 2008 Ozone NAAQS. See 80 FR                       identified one potential maintenance
                                                  maintenance of the 2012 PM2.5 NAAQS                     75705 (December 3, 2015). Future-year                 receptor for the 2012 PM2.5 NAAQS at
                                                  at these monitoring sites. The 2016                     modeling was also performed for 2025                  the Liberty monitor (ID number
                                                  memorandum explained that the                           to support the Regulatory Impact                      420030064), located in Allegheny
                                                  pertinent year for evaluating air quality               Assessment of the final 2015 Ozone                    County. The memorandum also
                                                  for purposes of addressing interstate                   NAAQS.7 The outputs from these model                  identified certain states with incomplete
                                                  transport for the 2012 PM2.5 NAAQS is                   runs included hourly concentrations of                ambient monitoring data as areas that
                                                  2021, the attainment deadline for 2012                  PM2.5 that were used in conjunction                   may require further analysis to
                                                  PM2.5 NAAQS nonattainment areas                         with measured data to project annual                  determine whether there are potential
                                                  classified as Moderate. Accordingly,                    average PM2.5 design values for 2017                  downwind air quality problems that
                                                  because the available data included                     and 2025. Areas that were designated as               may be impacted by transported
                                                  2017 and 2025 projected average and                     moderate PM2.5 nonattainment areas for                emissions.
                                                  maximum PM2.5 design values                             the 2012 annual PM2.5 NAAQS in 2014                     While developing the 2011 CSAPR
                                                  calculated through the CAMx                             must attain the NAAQS by December                     rulemaking, EPA modeled the impacts
                                                  photochemical model, the                                31, 2021, or as expeditiously as                      of all 38 eastern states in its modeling
                                                  memorandum suggests approaches                          practicable. Although neither the                     domain on PM2.5 concentrations at
                                                  states might use to interpolate PM2.5                   available 2017 nor 2025 future-year                   downwind receptors in other states in
                                                  values at sites in 2021.                                modeling data corresponds directly to                 the 2012 analysis year in order to
                                                     For all but one monitor site in the                  the future-year attainment deadline for               evaluate the contribution of upwind
                                                  eastern United States, the modeling data                moderate PM2.5 nonattainment areas,                   states on downwind states with respect
                                                  provided in the 2016 memorandum                         EPA believes that the modeling                        to the 1997 and 2006 PM2.5. Although
                                                  showed that monitors were expected to                   information is still helpful for                      the modeling was not conducted for
                                                  both attain and maintain the 2012 PM2.5                 identifying potential nonattainment and               purposes of analyzing upwind states’
                                                  NAAQS in both 2017 and 2025. The                        maintenance receptors in the 2017–2021                impacts on downwind receptors with
                                                  modeling results project that this one                  period. Assessing downwind PM2.5 air-                 respect to the 2012 PM2.5 NAAQS, the
                                                  monitor, the Liberty monitor, (ID                       quality problems based on estimates of                contribution analysis for the 1997 and
                                                  number 420030064), located in                           air-quality concentrations in a future                2006 standards can be informative for
                                                  Allegheny County, Pennsylvania, will                    year aligned with the relevant                        evaluating Maine’s compliance with the
                                                  be above the 2012 annual PM2.5 NAAQS                    attainment deadline is consistent with                Good Neighbor provision for the 2012
                                                  in 2017, but only under the model’s                     the instructions from the United States               standard.
                                                  maximum projected conditions, which                                                                             This CSAPR modeling showed that
                                                                                                          Court of Appeals for the District of
                                                  are used in EPA’s interstate transport                                                                        Maine had a very small impact (0.003
                                                                                                          Columbia Circuit in North Carolina v.
                                                  framework to identify maintenance                                                                             mg/m3) on the Liberty monitor in
                                                                                                          EPA, 531 F.3d 896, 911–12 (DC Cir.
                                                  receptors. The Liberty monitor (along                   2008) that upwind emission reductions                 Allegheny County, which is the only
                                                  with all the other Allegheny County                     should be harmonized, to the extent                   out-of-state monitor that may be a
                                                  monitors) is projected to both attain and               possible, with the attainment deadlines               nonattainment or maintenance receptor
                                                  maintain the NAAQS in 2025. The 2016                    for downwind areas.                                   in 2021. Although EPA has not
                                                  memorandum suggests that under such                                                                           proposed a specific threshold for
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                                                  a condition (again, where EPA’s                         Maine’s Submission for Prongs 1 and 2                 evaluating the 2012 PM2.5 NAAQS, EPA
                                                  photochemical modeling indicates an                       On July 6, 2016, Maine DEP submitted                notes that Maine’s impact on the Liberty
                                                  area will maintain the 2012 annual                      an infrastructure SIP submission for the              monitor is far below the threshold of 1%
                                                  PM2.5 NAAQS in 2025, but not in 2017),                  2012 PM2.5 NAAQS that addressed                       for the annual 2012 PM2.5 NAAQS (i.e.,
                                                  further analysis of the site should be                  prongs 1 and 2 for the 2012 PM2.5                     0.12 mg/m3) that EPA previously used to
                                                  performed to determine if the site may                                                                        evaluate the contribution of upwind
                                                  be a nonattainment or maintenance                        7 See 2015 ozone NAAQS RIA at: https://              states to downwind air-quality
                                                  receptor in 2021 (which, again, is the                  www3.epa.gov/ttnecas1/docs/20151001ria.pdf.           monitors. (A spreadsheet showing


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                                                                         Federal Register / Vol. 83, No. 156 / Monday, August 13, 2018 / Proposed Rules                                                  39963

                                                  CSAPR contributions for ozone and                       1-hr SO2 NAAQS SIP.8 Reductions are                   PM2.5 NAAQS in areas with data-quality
                                                  PM2.5 is included in docket EPA–HQ–                     largely due to declining sulfur content               issues.
                                                  OAR–2009–0491–4228.) Therefore, even                    in the Clairton Coke Work’s coke oven                    Information in Maine’s July 2016 SIP
                                                  if the Liberty monitor were considered                  gas (COG). Because this COG is burned                 submission corroborates EPA’s
                                                  a receptor for purposes of transport, the               at US Steel’s Clairton Coke Works, Irvin              proposed conclusion that Maine’s SIP
                                                  EPA proposes to conclude that Maine                     Mill, and Edgar Thompson Steel Mill,                  meets its Good Neighbor obligations.
                                                  will not significantly contribute to                    these reductions in sulfur content                    The state’s technical analysis in that
                                                  nonattainment, or interfere with                        should contribute to much lower PM2.5                 submission includes 2012–2014 design
                                                  maintenance, of the 2012 PM2.5 NAAQS                    precursor emissions in the immediate                  values for monitors in Maine, actual and
                                                  at that monitor.                                        future. The Allegheny SO2 SIP also                    projected PM2.5 emissions from 2002
                                                     In addition, the Liberty monitor is                  projects lower SO2 emissions resulting                through 2020 for various source
                                                  already close to attaining the 2012 PM2.5               from vehicle fuel standards, reductions               categories for Maine, and results of EPA
                                                  NAAQS, and expected emissions                           in general emissions due to declining                 CSAPR modeling. As mentioned above,
                                                  reductions in the next four years will                  population in the Greater Pittsburgh                  the state’s PM2.5 design values for all
                                                  lead to additional reductions in                        region, and several shutdowns of                      ambient monitors have been well below
                                                  measured PM2.5 concentrations. There                    significant sources of emissions in                   the 2012 PM2.5 NAAQS since 2005–
                                                  are both local and regional components                  Allegheny County.                                     2007. In addition, the 24-hour and
                                                  to measured PM2.5 levels. All monitors                     EPA modeling projections, the recent               annual design values for all monitors in
                                                  in Allegheny County have a regional                     downward trend in local and upwind                    the neighboring and nearby states of
                                                  component, with the Liberty monitor                     emissions reductions, the expected                    New Hampshire, Massachusetts, and
                                                  most strongly influenced by local                       continued downward trend in emissions                 Vermont also have been below the 2012
                                                  sources. This is confirmed by the fact                  between 2017 and 2021, and the                        PM2.5 NAAQS since 2005–2007.
                                                  that annual average measured                            downward trend in monitored PM2.5                        At specific monitors in Maine, the
                                                  concentrations at the Liberty monitor                   concentrations all indicate that the                  highest 24-hour mean value satisfying
                                                  have consistently been 2–4 mg/m3 higher                 Liberty monitor will attain and be able               minimum data completion criteria was
                                                  than other monitors in Allegheny                        to maintain the 2012 annual PM2.5                     25 mg/m3 in 2016 at a monitor in
                                                  County.                                                 NAAQS by 2021. See proposed approval                  Rumford in Oxford County. The highest
                                                     Specifically, previous CSAPR                         of the Ohio Infrastructure SIP (82 FR                 annual mean value satisfying minimum
                                                  modeling showed that regional                           57689).                                               data completion criteria was 9 mg/m3 in
                                                  emissions from upwind states,                              As noted in the 2016 memorandum,                   2014 at a monitor in Madawaska in
                                                  particularly SO2 and NOX emissions,                     several states have had recent data-                  Aroostook County.10
                                                  contribute to PM2.5 nonattainment at the                quality issues identified as part of the                 Second, Maine’s sources are well-
                                                  Liberty monitor. In recent years, large                 PM2.5 designations process. In                        controlled. Maine’s July 2016
                                                  SO2 and NOX reductions from power                       particular, some ambient PM2.5 data for               submission indicates that the state has
                                                  plants have occurred in Pennsylvania                    certain time periods between 2009 and                 many SIP-approved rules and programs
                                                  and states upwind from the Greater                      2013 in Florida, Illinois, Idaho,                     that limit emissions of PM2.5 and PM2.5
                                                  Pittsburgh region. Pennsylvania’s energy                Tennessee, and Kentucky did not meet                  precursors and the interstate transport
                                                  sector emissions of SO2 will have                       all data-quality requirements under 40                of pollution, including 06–096 Code of
                                                  decreased 166,000 tons between 2015–                    CFR part 50, appendix L. The lack of                  Maine Regulations (CMR) Chapter 102,
                                                  2017 as a result of CSAPR                               data means that the relevant areas in                 ‘‘Open Burning Regulation’’ (73 FR
                                                  implementation. This is due to both the                 those states could potentially be in                  9459, February 21, 2008); 06–096 CMR
                                                  installation of emissions controls and                  nonattainment or be maintenance                       Chapter 103, ‘‘Fuel Burning Equipment
                                                  retirements of electric generating units                receptors in 2021. However, as                        Particulate Emission Standard’’ (50 FR
                                                  (EGUs). Projected power plant closures                  mentioned above, EPA’s analysis for the               7770, February 26, 1985); and Chapter
                                                  and additional emissions controls in                    2011 CSAPR rulemaking with respect to                 145, ‘‘NOX Control Program’’ (70 FR
                                                  Pennsylvania and upwind states will                     the 2006 PM2.5 NAAQS determined that                  11879, March 10, 2005), as well the
                                                  help further reduce both direct PM2.5                   Maine’s impact to all these downwind                  state’s Title V permitting program (38
                                                  and PM2.5 precursors. Regional emission                 receptors would be well below the 1%                  MRSA § 353–A; 06–096 CMR Chapter
                                                  reductions will continue to occur from                  contribution threshold for this NAAQS.                140, which was approved by EPA on
                                                  current on-the-books federal and state                  That conclusion informs the analysis of               October 18, 2001 (66 FR 52874)).
                                                  regulations such as the federal on-road                 Maine’s contributions for purposes of                    It should also be noted that Maine is
                                                  and non-road vehicle programs, and                      the 2012 PM2.5 NAAQS as well. Given                   not in the CSAPR program because EPA
                                                  various rules for major stationary                      this, and the fact that the state’s PM2.5             analyses show that the state does not
                                                  emissions sources. See proposed                         design values for all ambient monitors                emit NOX at a level that contributes
                                                  approval of the Ohio Infrastructure SIP                 have been well below the 2012 24-hour                 significantly to non-attainment or
                                                  for the 2012 PM2.5 NAAQS (82 FR                         NAAQS (35 mg/m3) and the annual                       interferes with maintenance of the 1997
                                                  57689; December 7, 2017).                               PM2.5 NAAQS (12.0 mg/m3) since 2005–                  and 2006 PM2.5 NAAQS in any other
                                                     In addition to regional emissions                    2007,9 EPA concludes that it is highly                state.
                                                  reductions and plant closures,                          unlikely that Maine significantly                        For the reasons explained herein, EPA
                                                  additional local reductions to both                     contributes to nonattainment or                       agrees with Maine’s conclusions and
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                                                  direct PM2.5 and SO2 emissions are                      interferes with maintenance of the 2012               proposes to determine that Maine will
                                                  expected to occur and should contribute                                                                       not significantly contribute to
                                                  to further declines in Allegheny                          8 http://www.achd.net/air/pubs/SIPs/SO2_2010_
                                                                                                                                                                nonattainment or interfere with
                                                  County’s PM2.5 monitor concentrations.                  NAAQS_SIP_9-14-2017.pdf.                              maintenance of the 2012 PM2.5 NAAQS
                                                  For example, significant SO2 reductions                   9 Maine’s PM
                                                                                                                          2.5 design values for all ambient

                                                  have recently occurred at US Steel’s                    monitors from 2005–2007 through 2013–2015 are           10 24-hour and annual PM
                                                                                                                                                                                            2.5 monitor values for
                                                                                                          available on the Design Value Reports at https://     individual monitoring sites throughout Maine are
                                                  integrated steel mill facilities in                     19january2017snapshot.epa.gov/air-trends/air-         available at www.epa.gov/outdoor-air-quality-data/
                                                  southern Allegheny County as part of a                  quality-design-values_.html.                          monitor-values-report.



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                                                  39964                  Federal Register / Vol. 83, No. 156 / Monday, August 13, 2018 / Proposed Rules

                                                  in any other state. Therefore, EPA is                   regional haze. A fully approved regional              Maine with respect to the 2012 PM2.5
                                                  proposing to approve the July 2016                      haze SIP meeting the requirements of 40               NAAQS. Therefore, EPA proposes that
                                                  infrastructure SIP submission from                      CFR 51.308 will ensure that emissions                 Maine has met the applicable
                                                  Maine with regard to prongs 1 and 2 of                  from sources under an air agency’s                    infrastructure SIP requirements of
                                                  CAA section 110(a)(2)(D)(i)(I) for the                  jurisdiction are not interfering with                 section 110(a)(2)(D)(ii) related to section
                                                  2012 PM2.5 NAAQS.                                       measures required to be included in                   115 for the 2012 PM2.5 NAAQS.
                                                                                                          other air agencies’ plans to protect
                                                  Sub-Element 2: Section                                                                                        E. Section 110(a)(2)(E)—Adequate
                                                                                                          visibility. EPA approved Maine’s
                                                  110(a)(2)(D)(i)(II)—PSD (Prong 3)                                                                             Resources
                                                                                                          Regional Haze SIP on April 24, 2012 (77
                                                    To prevent significant deterioration of               FR 24385). Accordingly, EPA proposes                    This section requires each state to
                                                  air quality, this sub-element requires                  that Maine has met the visibility                     provide for personnel, funding, and
                                                  SIPs to include provisions that prohibit                protection requirements of                            legal authority under state law to carry
                                                  any source or other type of emissions                   110(a)(2)(D)(i)(II) for the 2012 PM2.5                out its SIP and related issues. In
                                                  activity in one state from interfering                  NAAQS.                                                addition, Section 110(a)(2)(E)(ii)
                                                  with measures that are required in any                                                                        requires each state to comply with the
                                                  other state’s SIP under Part C of the                   Sub-Element 4: Section
                                                                                                          110(a)(2)(D)(ii)—Interstate Pollution                 requirements with respect to state
                                                  CAA. One way for a state to meet this                                                                         boards under section 128. Finally,
                                                  requirement, specifically with respect to               Abatement
                                                                                                                                                                section 110(a)(2)(E)(iii) requires that,
                                                  in-state sources and pollutants that are                   This sub-element requires each SIP to              where a state relies upon local or
                                                  subject to PSD permitting, is through a                 contain provisions requiring compliance
                                                                                                                                                                regional governments or agencies for the
                                                  comprehensive PSD permitting program                    with requirements of section 126
                                                                                                                                                                implementation of its SIP provisions,
                                                  that applies to all regulated NSR                       relating to interstate pollution
                                                                                                                                                                the state retain responsibility for
                                                  pollutants and that satisfies the                       abatement. Section 126(a) requires new
                                                                                                                                                                ensuring implementation of SIP
                                                  requirements of EPA’s PSD                               or modified sources to notify
                                                                                                                                                                obligations with respect to relevant
                                                  implementation rules. For in-state                      neighboring states of potential impacts
                                                                                                                                                                NAAQS. This last sub-element,
                                                  sources not subject to PSD, this                        from the source. The statute does not
                                                                                                                                                                however, is inapplicable to this action,
                                                  requirement can be satisfied through a                  specify the method by which the source
                                                                                                                                                                because Maine does not rely upon local
                                                  fully-approved nonattainment new                        should provide the notification. States
                                                                                                                                                                or regional governments or agencies for
                                                  source review (NNSR) program with                       with SIP-approved PSD programs must
                                                  respect to any previous NAAQS. EPA                      have a provision requiring such                       the implementation of its SIP
                                                  last approved revisions to Maine’s                      notification by new or modified sources.              provisions.
                                                  NNSR regulations on February 14, 1996                      EPA-approved regulations require the               Sub-Element 1: Adequate Personnel,
                                                  (61 FR 5690).                                           Maine DEP to provide pre-construction                 Funding, and Legal Authority Under
                                                    To meet the requirements of Prong 3,                  notice of new or modified sources to,                 State Law To Carry Out Its SIP, and
                                                  Maine DEP cites to its PSD permitting                   among others, ‘‘any State . . . whose                 Related Issues
                                                  programs under 06–096 CMR Chapter                       lands may be affected by emissions from
                                                  115, ‘‘Major and Minor Source Air                       the source or modification.’’ See 06–096                 Maine, through its infrastructure SIP
                                                  Emission License Regulations,’’ to                      CMR Chapter 115, § IX(E)(3), approved                 submittal, has documented that its air
                                                  ensure that new and modified major                      March 23, 1993 (58 FR 15422). Such                    agency has authority and resources to
                                                  sources of PM2.5, SO2, and NOX                          notice ‘‘shall announce availability of               carry out its SIP obligations. Maine cites
                                                  emissions do not contribute                             the application, the Department’s                     to 38 MRSA § 341–A, ‘‘Department of
                                                  significantly to nonattainment, or                      preliminary determination in the form                 Environmental Protection,’’ 38 MRSA
                                                  interfere with maintenance, of those                    of a draft order, the degree of increment             § 341–D, ‘‘Board responsibilities and
                                                  standards. As noted above in our                        consumption that is expected from the                 duties,’’ 38 MRSA § 342,
                                                  discussion of Element C, Maine’s PSD                    source or modification, as well as the                ‘‘Commissioner, duties’’ and 38 MRSA
                                                  program fully satisfies the requirements                opportunity for submission of written                 § 581, ‘‘Declaration of findings and
                                                  of EPA’s PSD implementation rules.                      public comment.’’ 06–096 CMR Chapter                  intent.’’ These statutes provide the
                                                  Consequently, we are proposing to                       115, § IX(E)(2). These provisions are                 Maine DEP with the legal authority to
                                                  approve Maine’s infrastructure SIP                      consistent with EPA’s PSD regulations                 enforce air pollution control
                                                  submission for the 2012 PM2.5 NAAQS                     and require notice to affected states of              requirements and carry out SIP
                                                  related to section 110(a)(2)(D)(i)(II)                  a determination to issue a draft PSD                  obligations with respect to the 2012
                                                  Prong 3 for the reasons discussed under                 permit. Regarding section 126(b), no                  PM2.5 NAAQS. Additionally, state law
                                                  Element C.                                              source or sources within the state are                provides Maine DEP with the authority
                                                                                                          the subject of an active finding with                 to assess preconstruction permit fees
                                                  Sub-Element 3: Section                                                                                        and annual operating permit fees from
                                                                                                          respect to the 2012 PM2.5 NAAQS.
                                                  110(a)(2)(D)(i)(II)—Visibility Protection                                                                     air emissions sources and establishes a
                                                                                                          Consequently, EPA proposes to approve
                                                  (Prong 4)                                                                                                     general revenue reserve account within
                                                                                                          Maine’s infrastructure SIP submittals for
                                                     With regard to applicable                            this sub-element with respect to the                  the general fund to finance the state
                                                  requirements for visibility protection of               2012 PM2.5 NAAQS.                                     clean air programs. Maine also receives
                                                  section 110(a)(2)(D)(i)(II), states are                                                                       CAA sections 103 and 105 grant funds
                                                  subject to visibility and regional-haze                 Sub-Element 5: Section                                through Performance Partnership Grants
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                                                  program requirements under part C of                    110(a)(2)(D)(ii)—International Pollution              along with required state-matching
                                                  the CAA (which includes sections 169A                   Abatement                                             funds to provide funding necessary to
                                                  and 169B). EPA’s 2009, 2011, and 2013                      This sub-element requires each SIP to              carry out SIP requirements. Maine DEP
                                                  memoranda recommend that these                          contain provisions requiring compliance               states that these funding sources
                                                  requirements can be satisfied by an                     with the applicable requirements of                   provide it with adequate resources to
                                                  approved SIP addressing reasonably                      CAA § 115 relating to international                   carry out the SIP. Therefore, EPA
                                                  attributable visibility impairment, if                  pollution abatement. There are no final               proposes that Maine has met the
                                                  required, or an approved SIP addressing                 findings under section 115 against                    infrastructure SIP requirements of this


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                                                                         Federal Register / Vol. 83, No. 156 / Monday, August 13, 2018 / Proposed Rules                                           39965

                                                  portion of section 110(a)(2)(E) with                    environmental laws and that ‘‘[a]t least              Maine with respect to Board members,
                                                  respect to the 2012 PM2.5 NAAQS.                        3 members must have technical or                      and EPA approved both statutes into the
                                                                                                          scientific backgrounds in environmental               Maine SIP. 83 FR 28157 (June 18, 2018).
                                                  Sub-Element 2: State Board
                                                                                                          issues and no more than 4 members may                 For more information, see 83 FR 12905,
                                                  Requirements Under Section 128 of the
                                                                                                          be residents of the same congressional                12912 (March 26, 2018). EPA proposes
                                                  CAA
                                                                                                          district.’’ Id. § 341–C(2). EPA proposes              that Maine’s SIP also satisfies CAA
                                                     Section 110(a)(2)(E) also requires each              to find that these provisions fulfill the             § 128(a)(2) with respect to Board
                                                  SIP to provide requirements that the                    requirement that at least a majority of               members for the 2012 PM2.5 NAAQS for
                                                  State comply with the state board                       Board members represent the public                    the same reasons discussed in the
                                                  requirements of section 128 of the CAA.                 interest, but do not address the                      infrastructure SIP action for the 2008
                                                  Section 128(a) contains two explicit                    requirement that at least a majority ‘‘not            Pb, 2008 ozone, and 2010 NO2 NAAQS.
                                                  requirements: (1) That any board or                     derive any significant portion of their                 Regarding the DEP Commissioner,
                                                  body which approves permits or                          income from persons subject to’’ air                  state law at 38 MRSA § 341–A(3)(D) also
                                                  enforcement orders under this chapter                   permits and enforcement orders.                       explicitly makes that official subject to
                                                  shall have at least a majority of members               Furthermore, section 341–C is not                     5 MRSA § 18, the same conflict-of-
                                                  who represent the public interest and do                currently in Maine’s SIP. By letter dated             interest statute to which the Board is
                                                  not derive any significant portion of                   March 1, 2018 (extended to apply to the               subject. In the above-referenced
                                                  their income from persons subject to                    2012 PM2.5 NAAQS in an email dated                    infrastructure SIP action, EPA also
                                                  permits and enforcement orders under                    July 17, 2018), DEP committed to revise               determined that together 5 MRSA § 18
                                                  this chapter, and (2) that any potential                section 341–C to address the CAA                      (which is in the Maine SIP) and 38
                                                  conflicts of interest by members of such                § 128(a)(1) requirement that at least a               MRSA § 341–A(3)(D) (which is not
                                                  board or body or the head of an                         majority of Board members ‘‘not derive                currently in the SIP) satisfy the conflict
                                                  executive agency with similar powers be                 a significant portion of their income                 of interest requirement with respect to
                                                  adequately disclosed.                                   from persons subject to’’ air permits or
                                                     As mentioned earlier, the Maine DEP                                                                        the DEP Commissioner. See 83 FR
                                                                                                          enforcement orders and to submit, for                 28157; 83 FR 12905, 12912. For the
                                                  consists of a Commissioner and a Board                  inclusion in the SIP, the necessary
                                                  of Environmental Protection (‘‘BEP’’ or                                                                       same reasons discussed in the
                                                                                                          provisions to EPA within one year of                  infrastructure SIP action for the 2008
                                                  ‘‘Board’’), which is an independent                     EPA final action on its infrastructure
                                                  authority under state law that reviews                                                                        Pb, 2008 ozone, and 2010 NO2 NAAQS,
                                                                                                          SIPs for the 2008 lead (Pb), 2008 ozone,              EPA proposes that together the two state
                                                  certain permit applications in the first                and 2010 nitrogen dioxide (NO2)
                                                  instance and also renders final decisions                                                                     statutes would also satisfy the conflict
                                                                                                          NAAQS. Final action on these SIPs was                 of interest requirement with respect to
                                                  on appeals of permitting actions taken                  published on June 18, 2018 (83 FR
                                                  by the Commissioner as well as some                                                                           the DEP Commissioner for the 2012
                                                                                                          28157). Consequently, EPA proposes to
                                                  enforcement decisions by the                                                                                  PM2.5 NAAQS. While 38 MRSA § 341–
                                                                                                          conditionally approve Maine’s
                                                  Commissioner. Because the Board has                                                                           A(3)(D) is not currently in the SIP,
                                                                                                          infrastructure SIP submittal for this
                                                  authority under state law to hear                                                                             Maine DEP has already committed to
                                                                                                          requirement of CAA § 128(a)(1) for the
                                                  appeals of some CAA permits and                                                                               submitting it to EPA for inclusion
                                                                                                          2012 PM2.5 NAAQS.
                                                  enforcement orders, EPA considers that                     As noted above, section 128(a)(2) of               within one year of EPA’s final action on
                                                  the Board has authority to ‘‘approve’’                  the Act provides that ‘‘any potential                 Maine’s infrastructure SIP submissions
                                                  those permits or enforcement orders, as                 conflicts of interest by members of such              for the 2008 Pb, 2008 ozone, and 2010
                                                  recommended in the 2013                                 board or body or the head of an                       NO2 NAAQS. See 83 FR 28157.
                                                  Memorandum, and that the requirement                    executive agency with similar powers be               Consequently, EPA proposes to
                                                  of CAA § 128(a)(1) applies to Maine—                    adequately disclosed.’’ As EPA has                    conditionally approve Maine’s
                                                  that is, that ‘‘any board or body which                 explained in other infrastructure SIP                 infrastructure SIP submissions for the
                                                  approves permits or enforcement orders                  actions, the purpose of section 128(a)(2)             conflict of interest requirement of CAA
                                                  under this chapter shall have at least a                is to assure that conflicts of interest are           § 128(a)(2) with respect to the DEP
                                                  majority of members who represent the                   disclosed by the ultimate decision                    Commissioner for the 2012 PM2.5
                                                  public interest and do not derive any                   maker in permit or enforcement order                  NAAQS.
                                                  significant portion of their income from                decisions. See, e.g., 80 FR 42446, 42454              F. Section 110(a)(2)(F)—Stationary
                                                  persons subject to permits and                          (July 17, 2015). Although the Board is                Source Monitoring System
                                                  enforcement orders under this chapter.’’                the ultimate decision maker on air
                                                     Pursuant to state law, the BEP                       permitting decisions in Maine, certain                   States must establish a system to
                                                  consists of seven members appointed by                  air enforcement orders of the DEP                     monitor emissions from stationary
                                                  the Governor, subject to confirmation by                Commissioner are not reviewable by the                sources and submit periodic emissions
                                                  the State Legislature. See 38 MRSA                      Board, but rather may be appealed                     reports. Each plan shall also require the
                                                  § 341–C(1). The purpose of the Board ‘‘is               directly to Maine Superior Court. For                 installation, maintenance, and
                                                  to provide informed, independent and                    this reason, EPA interprets the conflict              replacement of equipment, and the
                                                  timely decisions on the interpretation,                 of interest requirement of CAA                        implementation of other necessary
                                                  administration and enforcement of the                   § 128(a)(2) to be applicable in Maine to              steps, by owners or operators of
                                                  laws relating to environmental                          both Board members and the DEP                        stationary sources to monitor emissions
                                                  protection and to provide for credible,                 Commissioner.                                         from such sources. The state plan shall
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                                                  fair and responsible public participation                  In a recent infrastructure SIP action              also require periodic reports on the
                                                  in department decisions.’’ Id. § 341–B.                 for the 2008 Pb, 2008 ozone, and 2010                 nature and amounts of emissions and
                                                  State law further provides that Board                   NO2 NAAQS, EPA determined that                        emissions-related data from such
                                                  members ‘‘must be chosen to represent                   Maine’s conflict of interest statute, 5               sources, and correlation of such reports
                                                  the broadest possible interest and                      MRSA § 18, and a provision explicitly                 by each state agency with any emission
                                                  experience that can be brought to bear                  making it applicable to Board members,                limitations or standards. Lastly, the
                                                  on the administration and                               38 MRSA § 341–C(7), together satisfy                  reports shall be available at reasonable
                                                  implementation of’’ Maine’s                             the CAA § 128(a)(2) requirement for                   times for public inspection.


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                                                  39966                  Federal Register / Vol. 83, No. 156 / Monday, August 13, 2018 / Proposed Rules

                                                     Maine’s infrastructure submittal                     program. NEI data are available to the                of section 110(a)(2)(F) for the 2012 PM2.5
                                                  references several existing state                       public. See www.epa.gov/air-emissions-                NAAQS.
                                                  regulations previously approved by EPA                  inventories/national-emissions-
                                                                                                                                                                G. Section 110(a)(2)(G)—Emergency
                                                  that require sources to monitor                         inventory-nei. The MAIRIS system is
                                                                                                                                                                Powers
                                                  emissions and submit reports. The first                 structured to electronically correlate
                                                  reference is to 06–096 CMR Chapter                      reported emissions with permit                           This section requires that a plan
                                                  115, ‘‘Major and Minor Source Air                       conditions and other applicable                       provide for state authority comparable
                                                  Emission License Regulations.’’ This                    standards, and identify all                           to that provided to the EPA
                                                  regulation contains compliance                          inconsistencies and potential                         Administrator in section 303 of the
                                                  assurance requirements for licensed                     compliance concerns.                                  CAA, and adequate contingency plans
                                                  sources and stipulates that licenses shall                 Furthermore, pursuant to DEP’s EPA-                to implement such authority. Section
                                                  include the following compliance                        approved regulations, ‘‘Except as                     303 of the CAA provides authority to
                                                  assurance elements: (a) A description of                expressly made confidential by law; the               the EPA Administrator to seek a court
                                                  all required monitoring and analysis                    commissioner shall make all documents                 order to restrain any source from
                                                  procedures or test methods required                     available to the public for inspection                causing or contributing to emissions
                                                  under the requirements applicable to                    and copying including the following: 1.               that present an ‘‘imminent and
                                                  the source; (b) A description of all                    All applications or other forms and                   substantial endangerment to public
                                                  recordkeeping requirements; and (c) A                   documents submitted in support of any                 health or welfare, or the environment.’’
                                                  description of all reporting                            license application: 2. All                           Section 303 further authorizes the
                                                  requirements. The second reference is to                correspondence, into or out of the                    Administrator to issue ‘‘such orders as
                                                  06–096 CMR Chapter 117, ‘‘Source                        Department, and any attachments                       may be necessary to protect public
                                                  Surveillance.’’ This regulation specifies               thereto . . . .’’ See 06–096 CMR                      health or welfare or the environment’’ in
                                                  which air emission sources are required                 Chapter 1, § 6(A). Furthermore, ‘‘The                 the event that ‘‘it is not practicable to
                                                  to operate continuous emission                          Commissioner shall keep confidential                  assure prompt protection . . . by
                                                  monitoring systems (CEMS) and details                   only those documents which may                        commencement of such civil action.’’
                                                                                                          remain confidential pursuant to 1                        We propose to find that a combination
                                                  the performance specifications, quality
                                                                                                          MRSA Section 402.’’ Id. § 6(B). In its                of state statutes and regulations
                                                  assurance requirements and procedures
                                                                                                          July 6, 2016, submittal, DEP certified                discussed in Maine DEP’s July 6, 2016,
                                                  for such systems, and subsequent record
                                                                                                          that, ‘‘[e]xcept as specifically exempted             submittal and a March 1, 2018, letter
                                                  keeping and reporting requirements. In
                                                                                                          by the Maine statute (1 MRSA Chapter                  (extended to apply to the 2012 PM2.5
                                                  addition, Maine cites its regulations
                                                                                                          13 Public Records and Proceedings),                   NAAQS in an email dated July 17, 2018)
                                                  implementing its operating permit
                                                                                                          Maine makes all records, reports or                   provides for authority comparable to
                                                  program pursuant to 40 CFR part 70:                                                                           that given the Administrator in CAA
                                                  06–096 CMR Chapter 140, ‘‘Part 70 Air                   information obtained by the MEDEP or
                                                                                                          referred to at public hearings available              section 303, as explained below. First,
                                                  Emission License Regulations.’’ These                                                                         38 MRSA § 347–A, ‘‘Emergency
                                                  regulations, although not in the SIP,                   to the public.’’ Maine DEP further
                                                                                                          certified therein that the information                Orders,’’ provides that ‘‘[w]henever it
                                                  identify the sources of air emissions that                                                                    appears to the commissioner, after
                                                  require a Part 70 air emission license                  submitted to Maine DEP is ‘‘available to
                                                                                                          the public at reasonable times for public             investigation, that there is a violation of
                                                  and incorporate the requirements of                                                                           the laws or regulations [DEP]
                                                                                                          inspection pursuant to Maine law.’’ By
                                                  Title IV and Title V of the Clean Air Act,                                                                    administers or of the terms or
                                                                                                          letter dated March 1, 2018 (extended to
                                                  as amended, 42 U.S.C. 7401, et seq., and                                                                      conditions of any of [DEP’s] orders that
                                                                                                          apply to the 2012 PM2.5 NAAQS in an
                                                  38 MRSA §§ 344 and 590. Chapter 140                                                                           is creating or is likely to create a
                                                                                                          email dated July 17, 2018), Maine
                                                  contains compliance assurance                                                                                 substantial and immediate danger to
                                                                                                          further certified that Maine’s Freedom
                                                  requirements regarding monitoring and                                                                         public health or safety or to the
                                                                                                          of Access law does not include any
                                                  reporting for licensed sources requiring                                                                      environment, the commissioner may
                                                                                                          exceptions that apply to stationary
                                                  a Part 70 air emission license. The                                                                           order the person or persons causing or
                                                                                                          source emissions. For these reasons, we
                                                  regulation was approved by EPA on                                                                             contributing to the hazard to
                                                                                                          propose to find that Maine satisfies the
                                                  October 18, 2001 (66 FR 52874). While                                                                         immediately take such actions as are
                                                                                                          requirement that emissions statements
                                                  Chapter 140 and the referenced                                                                                necessary to reduce or alleviate the
                                                                                                          be available at reasonable times for
                                                  provisions of Chapter 115 are not                       public inspection.                                    danger.’’ See 38 MRSA § 347–A(3).
                                                  formally approved into Maine’s SIP,                        Finally, in the March 1, 2018, letter              Section 347–A further authorizes the
                                                  they are legal mechanisms the state can                 (extended to apply to the 2012 PM2.5                  DEP Commissioner to initiate an
                                                  use to assure the enforcement of the                    NAAQS in an email dated July 17,                      enforcement action in state court in the
                                                  monitoring requirements approved in                     2018), DEP also certified that there are              event of a violation of such emergency
                                                  the SIP.                                                no provisions in Maine law that would                 order issued by the Commissioner. Id.
                                                     Regarding the section 110(a)(2)(F)                   prevent the use of any credible evidence              § 347–A(1)(A)(4). Similarly, 38 MRSA
                                                  requirements that the SIP provide for                   of noncompliance, as required by 40                   § 348, ‘‘Judicial Enforcement,’’
                                                  the correlation and public availability of              CFR 51.212. See also 06–096 CMR                       authorizes Maine DEP to institute
                                                  emission reports, Maine’s emission                      Chapter 140, § 3(E)(7)(a)(v)                          injunction proceedings ‘‘[i]n the event
                                                  statement rule, Chapter 137, requires                   (‘‘Notwithstanding any other provision                of a violation of any provision of the
                                                  facilities to report emissions of air                   in the State Implementation Plan                      laws administered by [DEP] or of any
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                                                  pollutants on an annual basis. The DEP                  approved by the EPA or Section 114(a)                 order, regulation, license, permit,
                                                  uses a web-based electronic reporting                   of the CAA, any credible evidence may                 approval, administrative consent
                                                  system, the Maine Air Emissions                         be used for the purpose of establishing               agreement or decision of the board or
                                                  Inventory Reporting System                              whether a person has violated or is in                commissioner.’’ Id. § 348(1). Section 348
                                                  (‘‘MAIRIS’’), for this purpose that allows              violation of any statute, regulation, or              also authorizes Maine DEP to seek a
                                                  it to package and electronically submit                 Part 70 license requirement.’’). For the              court order to a restrain a source if it
                                                  reported emissions data to EPA under                    above reasons, EPA proposes to approve                ‘‘finds that the discharge, emission or
                                                  the national emission inventory (NEI)                   Maine’s submittals for this requirement               deposit of any materials into any waters,


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                                                                         Federal Register / Vol. 83, No. 156 / Monday, August 13, 2018 / Proposed Rules                                                  39967

                                                  air or land of th[e] State constitutes a                Governor can then exercise authority to               For the 2006 PM2.5 NAAQS, EPA’s 2009
                                                  substantial and immediate danger to the                 ‘‘declare a state of emergency in the                 Guidance recommends that states
                                                  health, safety or general welfare of any                State or any section of the State.’’ See              develop emergency episode plans for
                                                  person, persons or property.’’ Id.                      37–B MRSA § 742(1)(A). State law                      any area that has monitored and
                                                  § 348(3). Thus, these provisions                        defines ‘‘disaster’’ in this context to               recorded 24-hour PM2.5 levels greater
                                                  authorize Maine DEP to issue an                         mean ‘‘the occurrence or imminent                     than 140 mg/m3 since 2006. EPA’s
                                                  administrative order or to seek a court                 threat of widespread or severe damage,                review of Maine’s certified air quality
                                                  order to restrain any source from                       injury or loss of life or property                    data in AQS indicates that the highest
                                                  causing or contributing to emissions                    resulting from any natural or man-made                24-hour PM2.5 level recorded since 2006
                                                  that present an imminent and                            cause, including, but not limited to . . .            was 83.3 mg/m3, which occurred in 2017
                                                  substantial endangerment to public                      air contamination.’’ Id. § 703(2). Upon               in the town of Madawaska in Aroostook
                                                  health or welfare, or the environment, if               the declaration of a state of emergency,              County.11 Therefore, EPA proposes that
                                                  there is also a violation of a law,                     the Governor may, among other things,                 a specific contingency plan from Maine
                                                  regulation, order, or permit                            ‘‘[o]rder the termination, temporary or               for PM2.5 is not necessary. Furthermore,
                                                  administered or issued by DEP, as the                   permanent, of any process, operation,                 although not expected, if PM2.5
                                                  case may be.                                            machine or device which may be                        conditions in Maine were to change,
                                                     Second, in its March 1, 2018, letter,                causing or is understood to be the cause              Maine DEP has general authority to
                                                  Maine DEP also cites to 38 MRSA § 591,                  of the state of emergency,’’ id.                      order a source to reduce or discontinue
                                                  ‘‘Prohibitions,’’ as contributing to its                § 742(1)(C)(11), or ‘‘[t]ake whatever                 air pollution as required to protect the
                                                  authority. Section 591 provides that                    action is necessary to abate, clean up or             public health or safety or the
                                                  ‘‘[n]o person may discharge air                         mitigate whatever danger may exist                    environment, as discussed earlier. In
                                                  contaminants into ambient air within a                  within the affected area,’’ id.                       addition, as a matter of practice, Maine
                                                  region in such manner as to violate                     § 742(1)(C)(12). Thus, even if there may              posts on the internet daily forecasted
                                                  ambient air quality standards                           otherwise be no violation of a DEP-                   PM2.5 levels through the EPA AirNow
                                                  established under this chapter or                       administered or -issued law, regulation,              and EPA Enviroflash systems.
                                                  emission standards established pursuant                 order, or permit, state authorities exist             Information regarding these two systems
                                                  to section 585, 585–B or 585–K.’’ In                    to restrain the source.                               is available on EPA’s website at
                                                  those cases where emissions of PM2.5, or                   Finally, Maine’s submittal cites 06–               www.airnow.gov. When levels are
                                                  PM2.5 precursors may be causing or                      096 CMR Chapter 109, ‘‘Emergency                      forecast to exceed the 24-hour PM2.5
                                                  contributing to an ‘‘imminent and                       Episode Regulations,’’ which sets forth               standard in Maine, notices are sent out
                                                  substantial endangerment to public                      various emission reduction plans                      to Enviroflash participants, the media
                                                  health or welfare, or the environment,’’                intended to prevent air pollution from                are alerted via a press release, and the
                                                  a violation of § 591 would also occur,                  reaching levels that would cause                      National Weather Service (NWS) is
                                                  since Maine law provides that ambient                   imminent and substantial harm and                     alerted to issue an Air Quality Advisory
                                                  air quality standards are designed to                   recognizes the Commissioner’s authority               through the normal NWS weather alert
                                                  prevent ‘‘air pollution,’’ id. § 584, which             to issue additional emergency orders                  system. These actions are similar to the
                                                  state law expressly defines as ‘‘the                    pursuant to 38 MRSA § 347–A, as                       notification and communication
                                                  presence in the outdoor atmosphere of                   necessary to the health of persons, by                requirements for contingency plans in
                                                  one or more air contaminants in                         restricting emissions during periods of               40 CFR 51.152.
                                                  sufficient quantities and of such                       air pollution emergencies. For these
                                                                                                                                                                   Therefore, EPA proposes that Maine,
                                                  characteristics and duration as to be                   reasons, we propose to find that certain
                                                                                                                                                                through the combination of statutes and
                                                  injurious to human, plant or animal life                state statutes and regulations provide for
                                                                                                                                                                regulations discussed above and
                                                  or to property, or which unreasonably                   authority comparable to that provided to
                                                                                                                                                                participation in EPA’s AirNow program,
                                                  interfere with the enjoyment of life and                the Administrator in CAA § 303.
                                                                                                             Section 110(a)(2)(G) also requires a               meets the applicable infrastructure SIP
                                                  property,’’ id. § 582(3) (emphasis
                                                                                                          state to submit for EPA approval a                    requirements of section 110(a)(2)(G)
                                                  added). In its March 1, 2018, letter,
                                                                                                          contingency plan (also known as an                    with respect to the 2012 PM2.5 NAAQS.
                                                  Maine further explains that sections
                                                  347–A and 591 ‘‘together authorize the                  emergency episode plan) to implement                  H. Section 110(a)(2)(H)—Future SIP
                                                  Commissioner to issue an emergency                      the air agency’s emergency episode                    Revisions
                                                  order upon finding an apparent                          authority for any Air Quality Control
                                                                                                                                                                   This section requires that a state’s SIP
                                                  violation of DEP laws or regulations to                 Region (AQCR) within the state that is
                                                                                                          classified as Priority I, IA, or II for               provide for revision from time to time
                                                  address emissions of criteria pollutants,
                                                                                                          certain pollutants. See 40 CFR 51.150.                as may be necessary to take into account
                                                  air contaminants governed by standards
                                                                                                          For classifications for Maine, see 40 CFR             changes in the NAAQS or availability of
                                                  promulgated under section 585, and
                                                                                                          52.1021. AQCRs classified as Priority III             improved methods for attaining the
                                                  hazardous air pollutants governed by
                                                                                                          do not require contingency plans. See                 NAAQS and whenever the EPA finds
                                                  standards promulgated under section
                                                                                                          40 CFR 51.152(c). In general,                         that the SIP is substantially inadequate.
                                                  585–B.’’
                                                     Third, in the unlikely event that air                contingency plans for Priority I, IA, and                To address this requirement, Maine’s
                                                  emissions are creating a substantial or                 II areas must meet the applicable                     infrastructure submittal references 38
                                                  immediate threat to the public health,                  requirements of 40 CFR part 51, subpart               MRSA § 581, ‘‘Declaration of findings
                                                  safety or to the environment without                    H (40 CFR 51.150 through 51.153)                      and intent,’’ which characterizes the
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                                                  violating any DEP law, regulation, order,               (‘‘Prevention of Air Pollution                        state’s laws regarding the Protection and
                                                  or permit, emergency authority to issue                 Emergency Episodes’’) for the relevant                Improvement of Air as an exercise of
                                                  an order to restrain a source may also                  NAAQS, if the NAAQS is covered by                     ‘‘the police power of the State in a
                                                  be exercised pursuant to 37–B MRSA                      those regulations. In the case of PM2.5,              coordinated state-wide program to
                                                  § 742, ‘‘Emergency Proclamation.’’                      EPA has not promulgated regulations                     11 24-hour and annual PM
                                                                                                                                                                                            2.5 monitor values for
                                                  Maine explains that the DEP                             that provide the ambient levels to                    individual monitoring sites throughout Maine are
                                                  Commissioner can notify the Governor                    classify different priority levels for the            available at www.epa.gov/outdoor-air-quality-data/
                                                  of an imminent ‘‘disaster,’’ and the                    2012 standard (or any PM2.5 NAAQS).                   monitor-values-report.



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                                                  39968                  Federal Register / Vol. 83, No. 156 / Monday, August 13, 2018 / Proposed Rules

                                                  control present and future sources of                      Pursuant to state law, Maine DEP is                use, requirements and issues. Id. § 341–
                                                  emission of air contaminants to the end                 authorized to, among other things,                    A(1). To that end, Maine DEP makes
                                                  that air polluting activities of every type             ‘‘educate the public on natural resource              real-time and historical air quality
                                                  shall be regulated in a manner that                     use, requirements and issues.’’ See 38                information available on its website.
                                                  reasonably insures the continued health,                MRSA § 341–A(1). State law further                       The agency also provides extended-
                                                  safety and general welfare of all of the                provides that one of the purposes of the              range air-quality forecasts, which give
                                                  citizens of the State; protects property                BEP is ‘‘to provide for credible, fair and
                                                                                                                                                                the public advanced notice of air quality
                                                  values and protects plant and animal                    responsible public participation in
                                                                                                                                                                events. This advance notice allows the
                                                  life.’’ In addition, we note that Maine                 department decisions,’’ id. § 341–B, and
                                                                                                                                                                public to limit their exposure to
                                                  DEP is required by statute to ‘‘prevent,                authorizes it to ‘‘cooperate with other
                                                  abate and control the pollution of the air              state or federal departments or agencies              unhealthy air and enact a plan to reduce
                                                  [, to] preserve, improve and prevent                    to carry out’’ its responsibilities, id.              pollution at home and at work. Maine
                                                  diminution of the natural environment                   § 341–F(6). Furthermore, pursuant to                  DEP forecasts daily ozone and particle
                                                  of the State [, and to] protect and                     Maine’s EPA-approved regulations,                     levels and issues these forecasts to the
                                                  enhance the public’s right to use and                   Maine DEP is required to provide notice               media and to the public via its website,
                                                  enjoy the State’s natural resources.’’ See              to relevant municipal officials and                   telephone hotline, and email. Alerts
                                                  38 MRSA § 341–A(1). Furthermore,                        FLMs, among others, of DEP’s                          include information about the health
                                                  Maine DEP is authorized to ‘‘adopt,                     preparation of a draft permit for a new               implications of elevated pollutant levels
                                                  amend or repeal rules and emergency                     or modified source. See 06–096 CMR                    and list actions to reduce emissions and
                                                  rules necessary for the interpretation,                 Chapter 115, § IX(E)(3) (approved March               to reduce the public’s exposure. In
                                                  implementation and enforcement of any                   23, 1993 (58 FR 15422)). In addition,                 addition, Air Quality Data Summaries of
                                                  provision of law that the department is                 with respect to area reclassifications to             the year’s air-quality monitoring results
                                                  charged with administering.’’ Id. § 341–                Class I, II, or III for PSD purposes, the             are issued annually and posted on the
                                                  H(2); see also id. § 585–A (recognizing                 DEP is required to offer an opportunity               Maine DEP Bureau of Air Quality
                                                  DEP’s rulemaking authority to propose                   for a public hearing and to consult with              website. Maine is also an active partner
                                                  SIP revisions). These general                           appropriate FLMs. See 38 MRSA § 583–                  in EPA’s AirNow and EnviroFlash air
                                                  authorizing statutes give Maine DEP the                 B; 06–096 CMR Chapter 114, § 1(E).                    quality alert programs.
                                                  power to revise the Maine SIP from time                 Maine’s Transportation Conformity rule                   EPA proposes that Maine has met the
                                                  to time as may be necessary to take                     at 06–096 CMR Chapter 139 also                        infrastructure SIP requirements of this
                                                  account of changes in the NAAQS or                      provides procedures for interagency                   portion of section 110(a)(2)(J) with
                                                  availability of improved methods for                    consultation, resolution of conflicts, and
                                                                                                                                                                respect to the 2012 PM2.5 NAAQS.
                                                  attaining the NAAQS and whenever the                    public consultation and notification.
                                                  EPA finds that the SIP is substantially                 Finally, the Maine Administrative                     Sub-Element 3: PSD
                                                  inadequate.                                             Procedures Act (Maine Revised Statutes
                                                     Consequently, EPA proposes that                      Title 5, Chapter 375, subchapter 2)                     State plans must meet the applicable
                                                  Maine meets the infrastructure SIP                      requires notification and provision of                requirements of part C of the CAA
                                                  requirements of CAA section                             comment opportunities to all parties                  related to PSD. Maine’s PSD program in
                                                  110(a)(2)(H) for the 2012 PM2.5 NAAQS.                  affected by proposed regulations. All                 the context of infrastructure SIPs has
                                                                                                          SIP revisions undergo public notice and               already been discussed in sections
                                                  I. Section 110(a)(2)(I)—Nonattainment                   opportunity for hearing, which allows                 110(a)(2)(C) and 110(a)(2)(D)(i)(II) and,
                                                  Area Plan or Plan Revisions Under Part                  for comment by the public, including                  as we have noted, fully satisfies the
                                                  D                                                       local governments.                                    requirements of EPA’s PSD
                                                     The CAA requires that each plan or                      EPA proposes that Maine has met the                implementation rules. Consequently, we
                                                  plan revision for an area designated as                 infrastructure SIP requirements of this               propose to approve the PSD sub-element
                                                  a nonattainment area meet the                           portion of section 110(a)(2)(J) with                  of section 110(a)(2)(J) for the 2012 PM2.5
                                                  applicable requirements of part D of the                respect to the 2012 PM2.5 NAAQS.                      NAAQS, consistent with the actions we
                                                  CAA. Part D relates to nonattainment                    Sub-Element 2: Public Notification                    are proposing for sections 110(a)(2)(C)
                                                  areas. EPA has determined that section                                                                        and 110(a)(2)(D)(i)(II).
                                                  110(a)(2)(I) is not applicable to the                      Section 110(a)(2)(J) also requires
                                                  infrastructure SIP process. Instead, EPA                states to notify the public if NAAQS are              Sub-Element 4: Visibility Protection
                                                  takes action on part D attainment plans                 exceeded in an area, advise the public
                                                                                                          of health hazards associated with                        With regard to the applicable
                                                  through separate processes.                                                                                   requirements for visibility protection,
                                                                                                          exceedances, and enhance public
                                                  J. Section 110(a)(2)(J)—Consultation                    awareness of measures that can be taken               states are subject to visibility and
                                                  With Government Officials; Public                       to prevent exceedances and of ways in                 regional haze program requirements
                                                  Notifications; Prevention of Significant                which the public can participate in                   under part C of the CAA (which
                                                  Deterioration; Visibility Protection                    regulatory and other efforts to improve               includes sections 169A and 169B). In
                                                     The evaluation of the submission                     air quality.                                          the event of the establishment of a new
                                                  from Maine with respect to the                             As mentioned elsewhere in this                     NAAQS, however, the visibility and
                                                  requirements of CAA section 110(a)(2)(J)                notice, state law directs Maine DEP to,               regional haze program requirements
                                                                                                          among other things, ‘‘prevent, abate and              under part C do not change. Thus, as
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                                                  is described below.
                                                                                                          control the pollution of the air . . .                noted in EPA’s 2013 memorandum, we
                                                  Sub-Element 1: Consultation With                        improve and prevent diminution of the                 find that there is no new visibility
                                                  Government Officials                                    natural environment of the State[, and]               obligation ‘‘triggered’’ under section
                                                    States must provide a process for                     protect and enhance the public’s right to             110(a)(2)(J) when a new NAAQS
                                                  consultation with local governments                     use and enjoy the State’s natural                     becomes effective. In other words, the
                                                  and Federal Land Managers (FLMs) in                     resources.’’ See 38 MRSA § 341–A(1).                  visibility protection requirements of
                                                  carrying out NAAQS implementation                       State law also authorizes Maine DEP to                section 110(a)(2)(J) are not germane to
                                                  requirements.                                           ‘‘educate the public on natural resource              infrastructure SIP submissions.


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                                                                         Federal Register / Vol. 83, No. 156 / Monday, August 13, 2018 / Proposed Rules                                                                 39969

                                                  K. Section 110(a)(2)(K)—Air Quality                     the program. See 61 FR 49289, 49291                                                                            2012
                                                                                                                                                                                    Element
                                                  Modeling/Data                                           (September 19, 1996). Maine state law                                                                          PM2.5
                                                     Section 110(a)(2)(K) of the Act                      provides for the assessment of
                                                                                                          application fees from air emissions                   (A): Emission limits and other control                  A
                                                  requires that a SIP provide for the                                                                              measures.
                                                  performance of such air quality                         sources for permits for the construction              (B): Ambient air quality monitoring                     A
                                                  modeling as the EPA Administrator may                   or modification of air contaminant                       and data system.
                                                  prescribe for the purpose of predicting                 sources and sets permit fees. See 38                  (C)1: Enforcement of SIP measures                       A
                                                  the effect on ambient air quality of any                MRSA §§ 353–A (establishing annual air                (C)2: PSD program for major sources                     A
                                                  emissions of any air pollutant for which                emissions license fees), 352(2)(E)                       and major modifications.
                                                                                                          (providing that such fees ‘‘must be                   (C)3: PSD program for minor sources                     A
                                                  EPA has established a NAAQS, and the                                                                             and minor modifications.
                                                  submission, upon request, of data                       assessed to support activities for air
                                                                                                                                                                (D)1: Contribute to nonattainment/                      A
                                                  related to such air quality modeling.                   quality control including licensing,                     interfere with maintenance of
                                                  EPA has published modeling guidelines                   compliance, enforcement, monitoring,                     NAAQS.
                                                  at 40 CFR part 51, appendix W, for                      data acquisition and administration’’).               (D)2: PSD ..........................................    A
                                                  predicting the effects of emissions of                    EPA proposes that Maine meets the                   (D)3: Visibility Protection ...................         A
                                                  criteria pollutants on ambient air                                                                            (D)4: Interstate Pollution Abatement                    A
                                                                                                          infrastructure SIP requirements of                    (D)5: International Pollution Abate-                    A
                                                  quality. EPA has interpreted section                    section 110(a)(2)(L) for the 2012 PM2.5                  ment.
                                                  110(a)(2)(K) to require a state to submit               NAAQS.                                                (E)1: Adequate resources ..................             A
                                                  or reference the statutory or regulatory                                                                      (E)2: State boards .............................        CA
                                                  provisions that provide the air agency                  M. Section 110(a)(2)(M)—Consultation/                 (E)3: Necessary assurances with re-                     NA
                                                  with the authority to conduct such air                  Participation by Affected Local Entities                 spect to local agencies.
                                                  quality modeling and to provide such                                                                          (F): Stationary source monitoring                       A
                                                  modeling data to EPA upon request. See                     To satisfy Element M, states must                     system.
                                                  2013 Memorandum at 55.                                  provide for consultation with, and                    (G): Emergency power ......................             A
                                                     Maine state law implicitly authorizes                participation by, local political                     (H): Future SIP revisions ...................           A
                                                  Maine DEP to perform air quality                        subdivisions affected by the SIP.                     (I): Nonattainment area plan or plan                    NG
                                                                                                          Maine’s infrastructure submittal                         revisions under part D.
                                                  modeling and provide such modeling                                                                            (J)1: Consultation with government                      A
                                                  data to EPA upon request. See 38 MRSA                   references the Maine Administrative
                                                                                                                                                                   officials.
                                                  §§ 341–A(1), 581, 591–B. In addition,                   Procedure Act, 5 MRSA Chapter 375,
                                                                                                                                                                (J)2: Public notification ......................        A
                                                  Maine cites 06–096 CMR Chapters 115                     and explains that it requires public                  (J)3: PSD ...........................................   A
                                                  and 140, which provide that any                         notice of all SIP revisions prior to their            (J)4: Visibility protection .....................       NG
                                                  modeling required for pre-construction                  adoption, which allows for comment by                 (K): Air quality modeling and data .....                A
                                                  permits and operating permits for minor                 the public, including local political                 (L): Permitting fees ............................       A
                                                  and major sources be performed                          subdivisions. In addition, Maine cites                (M): Consultation and participation by                  A
                                                                                                          38 MRSA § 597, ‘‘Municipal air                           affected local entities.
                                                  consistent with EPA-prescribed
                                                  modeling guidelines at 40 CFR part 51,                  pollution control,’’ which provides that
                                                                                                                                                                  In the above table, the key is as
                                                  Appendix W. Chapters 115 and 140 also                   municipalities are not preempted from
                                                                                                                                                                follows:
                                                  require that applicants submit data                     studying air pollution and adopting and
                                                  related to modeling to Maine DEP. See                   enforcing ‘‘air pollution control and
                                                                                                                                                                A ............   Approve.
                                                  Email from Jeff Crawford, Maine DEP, to                 abatement ordinances’’ that are more                  CA ..........    Conditionally approve.
                                                  Alison Simcox, EPA (July 17, 2018). In                  stringent than those adopted by DEP or                NA ..........    Not applicable.
                                                  its July 6, 2016, submission, Maine DEP                 that ‘‘touch on matters not dealt with’’              NG .........     Not germane to infrastructure
                                                  further states that it performs modeling,               by state law. Finally, Maine cites                                       SIPs.
                                                  provides modeling data to EPA upon                      Chapter 9 of Maine’s initial SIP, which
                                                  request, and will continue to do both.                  was approved on May 31, 1972 (37 FR                     EPA is soliciting public comments on
                                                  Consequently, the SIP provides for such                 10842), and contains intergovernmental                the issues discussed in this proposal or
                                                  air quality modeling as the                             cooperation provisions.                               on other relevant matters. These
                                                  Administrator has prescribed and for                                                                          comments will be considered before
                                                                                                             EPA proposes that Maine meets the
                                                  the submission, upon request, of data                                                                         EPA takes final action. Interested parties
                                                                                                          infrastructure SIP requirements of
                                                  related to such modeling.                                                                                     may participate in the Federal
                                                                                                          section 110(a)(2)(M) with respect to the              rulemaking procedure by submitting
                                                     EPA proposes that Maine meets the                    2012 PM2.5 NAAQS.
                                                  infrastructure SIP requirements of                                                                            comments to this proposed rule by
                                                  section 110(a)(2)(K) with respect to the                IV                                                    following the instructions listed in the
                                                  2012 PM2.5 NAAQS.                                                                                             ADDRESSES section of this Federal
                                                                                                             EPA proposes to approve Maine’s July               Register. As noted in Table 1, EPA is
                                                  L. Section 110(a)(2)(L)—Permitting Fees                 6, 2016, infrastructure SIP submission                proposing to conditionally approve one
                                                    This section requires SIPs to mandate                 certifying that its current SIP is                    portion of Maine’s July 2016
                                                  that each major stationary source pay                   sufficient to meet the required                       infrastructure SIP submission for the
                                                  permitting fees sufficient to cover the                 infrastructure elements under sections                2012 PM2.5 NAAQS pertaining to
                                                  reasonable cost of reviewing, approving,                110(a)(1) and (2) for the 2012 PM2.5                  Element E(2) regarding State Boards and
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                                                  implementing, and enforcing a permit.                   NAAQS, with the exception of CAA                      Conflicts of Interest.
                                                    Maine implements and operates a                       section 110(a)(2)(E)(ii) regarding State                Under section 110(k)(4) of the Act,
                                                  Title V permit program, see 38 MRSA                     Boards and Conflicts of Interest, which               EPA may conditionally approve a plan
                                                  § 353–A; 06–096 CMR Chapter 140,                        we propose to conditionally approve, as               based on a commitment from the State
                                                  which was approved by EPA on October                    described in more detail above. EPA’s                 to adopt specific enforceable measures
                                                  18, 2001 (66 FR 52874). To gain this                    proposed actions regarding these                      by a date certain, but not later than 1
                                                  approval, Maine demonstrated the                        infrastructure SIP requirements are                   year from the date of approval. If EPA
                                                  ability to collect sufficient fees to run               contained in Table 1 below.                           conditionally approves the commitment


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                                                  39970                  Federal Register / Vol. 83, No. 156 / Monday, August 13, 2018 / Proposed Rules

                                                  in a final rulemaking action, the State                 substantial number of small entities                  ENVIRONMENTAL PROTECTION
                                                  must meet its commitment to submit an                   under the Regulatory Flexibility Act (5               AGENCY
                                                  update to its State Board rules that fully              U.S.C. 601 et seq.);
                                                  remedies the deficiency mentioned                                                                             40 CFR Part 52
                                                                                                             • Does not contain any unfunded
                                                  above under element E. If the State fails                                                                     [EPA–R05–OAR–2017–0060; FRL–9982–
                                                                                                          mandate or significantly or uniquely
                                                  to do so, this action will become a                                                                           11—Region 5]
                                                                                                          affect small governments, as described
                                                  disapproval one year from the date of
                                                  final approval. EPA will notify the State               in the Unfunded Mandates Reform Act
                                                                                                                                                                Air Plan Approval; Minnesota;
                                                  by letter that this action has occurred.                of 1995 (Pub. L. 104–4);                              Infrastructure SIP Requirements for
                                                  At that time, this commitment will no                      • Does not have Federalism                         the 2012 PM2.5 NAAQS; Multistate
                                                  longer be a part of the approved Maine                  implications as specified in Executive                Transport
                                                  SIP. EPA subsequently will publish a                    Order 13132 (64 FR 43255, August 10,
                                                  document in the Federal Register                                                                              AGENCY:  Environmental Protection
                                                                                                          1999);
                                                  notifying the public that the conditional                                                                     Agency (EPA).
                                                                                                             • Is not an economically significant               ACTION: Proposed rule.
                                                  approval automatically converted to a
                                                                                                          regulatory action based on health or
                                                  disapproval. If the State meets its                                                                           SUMMARY:    The Environmental Protection
                                                  commitment, within the applicable time                  safety risks subject to Executive Order
                                                                                                          13045 (62 FR 19885, April 23, 1997);                  Agency (EPA) is proposing to approve
                                                  frame, the conditionally approved                                                                             elements of the State Implementation
                                                  submission will remain a part of the SIP                   • Is not a significant regulatory action           Plan (SIP) submission from Minnesota
                                                  until EPA takes final action approving                  subject to Executive Order 13211 (66 FR               regarding the infrastructure
                                                  or disapproving the submission. If EPA                  28355, May 22, 2001);                                 requirements of section 110 of the Clean
                                                  disapproves the new submittal, the                         • Is not subject to requirements of                Air Act (CAA) for the 2012 annual fine
                                                  conditionally approved infrastructure                   Section 12(d) of the National                         particulate matter (PM2.5) National
                                                  SIP elements will also be disapproved at                Technology Transfer and Advancement                   Ambient Air Quality Standard (NAAQS
                                                  that time. If EPA approves the submittal,                                                                     or standard). The infrastructure
                                                                                                          Act of 1995 (15 U.S.C. 272 note) because
                                                  the conditionally approved                                                                                    requirements are designed to ensure that
                                                                                                          application of those requirements would
                                                  infrastructure SIP elements will be fully                                                                     the structural components of each
                                                  approved in their entirety and replace                  be inconsistent with the Clean Air Act;
                                                                                                          and                                                   state’s air quality management program
                                                  the conditionally approved program in                                                                         are adequate to meet the state’s
                                                  the SIP.                                                   • Does not provide EPA with the                    responsibilities under the CAA. This
                                                     If the conditional approval is                       discretionary authority to address, as                action pertains specifically to
                                                  converted to a disapproval, the final                   appropriate, disproportionate human                   infrastructure requirements concerning
                                                  disapproval triggers the Federal                        health or environmental effects, using                interstate transport provisions.
                                                  implementation plan (FIP) requirement                   practicable and legally permissible                   DATES: Comments must be received on
                                                  under section 110(c).                                   methods, under Executive Order 12898                  or before September 12, 2018.
                                                  V. Statutory and Executive Order                        (59 FR 7629, February 16, 1994).                      ADDRESSES: Submit your comments,
                                                  Reviews                                                    In addition, the SIP is not approved               identified by Docket ID No. EPA–R05–
                                                    Under the Clean Air Act, the                          to apply on any Indian reservation land               OAR–2017–0060 at https://
                                                  Administrator is required to approve a                  or in any other area where EPA or an                  www.regulations.gov, or via email to
                                                  SIP submission that complies with the                   Indian tribe has demonstrated that a                  blakley.pamela@epa.gov. For comments
                                                  provisions of the Act and applicable                    tribe has jurisdiction. In those areas of             submitted at Regulations.gov, follow the
                                                  Federal regulations. 42 U.S.C. 7410(k);                 Indian country, the rule does not have                online instructions for submitting
                                                  40 CFR 52.02(a). Thus, in reviewing SIP                 tribal implications and will not impose               comments. Once submitted, comments
                                                  submissions, EPA’s role is to approve                   substantial direct costs on tribal                    cannot be edited or removed from
                                                  state choices, provided that they meet                  governments or preempt tribal law as                  Regulations.gov. For either manner of
                                                  the criteria of the Clean Air Act.                                                                            submission, EPA may publish any
                                                                                                          specified by Executive Order 13175 (65
                                                  Accordingly, this proposed action                                                                             comment received to its public docket.
                                                                                                          FR 67249, November 9, 2000).
                                                  merely approves state law as meeting                                                                          Do not submit electronically any
                                                  Federal requirements and does not                       List of Subjects in 40 CFR Part 52                    information you consider to be
                                                  impose additional requirements beyond                                                                         Confidential Business Information (CBI)
                                                                                                            Environmental protection, Air                       or other information whose disclosure is
                                                  those imposed by state law. For that
                                                                                                          pollution control, Carbon monoxide,                   restricted by statute. Multimedia
                                                  reason, this proposed action:
                                                    • Is not a significant regulatory action              Incorporation by reference,                           submissions (audio, video, etc.) must be
                                                  subject to review by the Office of                      Intergovernmental relations, Lead,                    accompanied by a written comment.
                                                  Management and Budget under                             Nitrogen dioxide, Ozone, Particulate                  The written comment is considered the
                                                  Executive Orders 12866 (58 FR 51735,                    matter, Reporting and recordkeeping                   official comment and should include
                                                  October 4, 1993) and 13563 (76 FR 3821,                 requirements, Sulfur oxides, Volatile                 discussion of all points you wish to
                                                  January 21, 2011);                                      organic compounds.                                    make. EPA will generally not consider
                                                    • This action is not expected to be an                  Dated: August 6, 2018.
                                                                                                                                                                comments or comment contents located
                                                  Executive Order 13771 regulatory action                                                                       outside of the primary submission (i.e.
sradovich on DSK3GMQ082PROD with PROPOSALS




                                                                                                          Alexandra Dunn,                                       on the web, cloud, or other file sharing
                                                  because this action is not significant
                                                  under Executive Order 12866.                            Regional Administrator, EPA Region 1.                 system). For additional submission
                                                    • Does not impose an information                      [FR Doc. 2018–17247 Filed 8–10–18; 8:45 am]           methods, please contact the person
                                                  collection burden under the provisions                  BILLING CODE 6560–50–P                                identified in the FOR FURTHER
                                                  of the Paperwork Reduction Act (44                                                                            INFORMATION CONTACT section. For the
                                                  U.S.C. 3501 et seq.);                                                                                         full EPA public comment policy,
                                                    • Is certified as not having a                                                                              information about CBI or multimedia
                                                  significant economic impact on a                                                                              submissions, and general guidance on


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Document Created: 2018-08-11 00:27:52
Document Modified: 2018-08-11 00:27:52
CategoryRegulatory Information
CollectionFederal Register
sudoc ClassAE 2.7:
GS 4.107:
AE 2.106:
PublisherOffice of the Federal Register, National Archives and Records Administration
SectionProposed Rules
ActionProposed rule.
DatesComments must be received on or before September 12, 2018.
ContactAlison C. Simcox, Air Quality Planning Unit, Air Programs Branch, U.S. Environmental Protection Agency, Region 1, 5 Post Office Square, Suite 100 (Mail code OEP05-2), Boston, MA 02109--3912, tel. (617) 918-1684; [email protected]
FR Citation83 FR 39957 
CFR AssociatedEnvironmental Protection; Air Pollution Control; Carbon Monoxide; Incorporation by Reference; Intergovernmental Relations; Lead; Nitrogen Dioxide; Ozone; Particulate Matter; Reporting and Recordkeeping Requirements; Sulfur Oxides and Volatile Organic Compounds

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