83_FR_25715 83 FR 25608 - Air Plan Approval; Ohio; Cleveland, PM2.5

83 FR 25608 - Air Plan Approval; Ohio; Cleveland, PM2.5

ENVIRONMENTAL PROTECTION AGENCY

Federal Register Volume 83, Issue 107 (June 4, 2018)

Page Range25608-25615
FR Document2018-11748

On October 14, 2016, the Ohio Environmental Protection Agency (OEPA) submitted a State Implementation Plan (SIP) submission for the 2012 Fine Particle (PM<INF>2.5</INF>) National Ambient Air Quality Standards (``NAAQS'' or ``standards'') for the Cleveland nonattainment area. As required by the Clean Air Act (CAA), OEPA developed an attainment plan to address the Cleveland nonattainment area and evaluate the area's ability to attain the 2012 PM<INF>2.5</INF> NAAQS by the ``Moderate'' attainment date of December 31, 2021. The SIP submission addresses specific requirements as outlined in the CAA including: Attainment demonstration; reasonable available control measure (RACM) analysis; emissions inventory requirements; reasonable further progress (RFP) with quantitative milestones; and nonattainment new source review (NNSR). Additionally, the SIP submission includes optional PM<INF>2.5</INF> precursor demonstrations for NNSR and attainment planning purposes. EPA has evaluated the SIP submission and is proposing to approve portions of the submission as meeting the applicable CAA requirements for RACM, emissions inventory, attainment demonstration modeling, and precursor insignificance demonstrations for NNSR and attainment planning purposes. EPA is not acting on the other elements of the submission, including reasonable further progress (RFP), with quantitative milestones, and motor vehicle emission budgets (MVEBs).

Federal Register, Volume 83 Issue 107 (Monday, June 4, 2018)
[Federal Register Volume 83, Number 107 (Monday, June 4, 2018)]
[Proposed Rules]
[Pages 25608-25615]
From the Federal Register Online  [www.thefederalregister.org]
[FR Doc No: 2018-11748]


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ENVIRONMENTAL PROTECTION AGENCY

40 CFR Part 52

[EPA-R05-OAR-2016-0644; FRL-9978-87-Region 5]


Air Plan Approval; Ohio; Cleveland, PM2.5 Attainment Plan

AGENCY: Environmental Protection Agency (EPA).

ACTION: Proposed rule.

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SUMMARY: On October 14, 2016, the Ohio Environmental Protection Agency 
(OEPA) submitted a State Implementation Plan (SIP) submission for the 
2012 Fine Particle (PM2.5) National Ambient Air Quality 
Standards (``NAAQS'' or ``standards'') for the Cleveland nonattainment 
area. As required by the Clean Air Act (CAA), OEPA developed an 
attainment plan to address the Cleveland nonattainment area and 
evaluate the area's ability to attain the 2012 PM2.5 NAAQS 
by the ``Moderate'' attainment date of December 31, 2021. The SIP 
submission addresses specific requirements as outlined in the CAA 
including: Attainment demonstration; reasonable available control 
measure (RACM) analysis; emissions inventory requirements; reasonable 
further progress (RFP) with quantitative milestones; and nonattainment 
new source review (NNSR). Additionally, the SIP submission includes 
optional PM2.5 precursor demonstrations for NNSR and 
attainment planning purposes. EPA has evaluated the SIP submission and 
is proposing to approve portions of the submission as meeting the 
applicable CAA requirements for RACM, emissions inventory, attainment 
demonstration modeling, and precursor insignificance demonstrations for 
NNSR and attainment planning purposes. EPA is not acting on the other 
elements of the submission, including reasonable further progress 
(RFP), with quantitative milestones, and motor vehicle emission budgets 
(MVEBs).

DATES: Comments must be received on or before July 5, 2018.

ADDRESSES: Submit your comments, identified by Docket ID No. EPA-R05-
OAR-2016-0644 at http://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, 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. EPA will 
generally not consider comments or comment contents located outside of 
the primary submission (i.e. on the web, cloud, or other file sharing 
system). For additional submission methods, please contact the person 
identified in the FOR FURTHER INFORMATION CONTACT section. For the full 
EPA public comment policy, information about CBI or multimedia 
submissions, and general guidance on making effective comments, please 
visit http://www2.epa.gov/dockets/commenting-epa-dockets.

FOR FURTHER INFORMATION CONTACT:  Carolyn Persoon, Environmental 
Engineer, Control Strategies Section, Air Programs Branch (AR 18J), 
Environmental Protection Agency, Region 5, 77 West Jackson Boulevard, 
Chicago, Illinois 60604, (312) 353-8290, [email protected].

SUPPLEMENTARY INFORMATION: Throughout this document, wherever ``we'', 
``us'' or ``our'' is used, we mean EPA. This supplementary information 
section is arranged as follows:

I. Background for EPA's Proposed Action
    A. History of the PM2.5 NAAQS
    B. CAA PM2.5 Moderate Area Nonattainment SIP 
Requirements
II. EPA's Evaluation of Submission
III. EPA's Proposed Action
IV. Statutory and Executive Order Reviews

I. Background for EPA's Proposed Action

A. History of the 2012 PM2.5 NAAQS

    On December 15, 2012, EPA promulgated the 2012 PM2.5 
NAAQS, including a revision of the annual standard to 12.0 micrograms 
per cubic meter ([micro]g/m\3\) based on a 3-year average of annual 
mean PM2.5 concentrations, and maintaining the current 24-
hour (or daily) standard of 35 [micro]g/m\3\ based on a 3-year average 
of the 98th percentile of 24-hour concentrations (78 FR 3086, January 
15, 2013). EPA established the 2012 PM2.5 NAAQS based on 
significant evidence and numerous health studies demonstrating the 
serious health effects associated with exposures to PM2.5. 
The Cleveland, Ohio area was designated ``Moderate'' nonattainment for 
the 2012 PM2.5 NAAQS based on ambient monitoring data 
showing that the area was above the 12.0 [micro]g/m\3\ standard. At the 
time of designations, the Cleveland area had a design value of 12.5 
[micro]g/m\3\ for the 2011-2013 monitoring period (80 FR 2206, January 
15, 2015).
    To provide guidance on the CAA requirements for state and tribal 
implementation plans to implement the 2012 PM2.5 NAAQS, EPA 
promulgated the ``Fine Particle Matter National Ambient Air Quality 
Standard: State Implementation Plan Requirements; Final Rule'' (81 FR 
58010, August 24, 2016) (hereinafter, the ``PM2.5 SIP 
Requirements Rule''). As part of the PM2.5 SIP Requirements 
Rule, EPA has interpreted the requirements of the CAA to allow the 
state to provide a ``precursor demonstration'' to EPA that supports the 
determination that one or more PM2.5 precursors need not be 
subject to control and planning requirements in a given nonattainment 
area. EPA has determined that sulfur dioxide (SO2), nitrogen 
oxides (NOX),

[[Page 25609]]

volatile organic compounds (VOC) and ammonia (NH3) are 
precursors to PM, and thus the attainment plan requirements of subpart 
4 initially apply equally to emissions of direct PM2.5 and 
all of its identified precursors. Section 189(e) of the CAA explicitly 
requires the control of major stationary sources of PM2.5 
precursors, unless there is a demonstration to the satisfaction of the 
EPA Administrator that such major stationary sources do not contribute 
significantly to PM levels that exceed the standards in the area. 
Accordingly, a state can also provide a precursor demonstration for 
attainment planning purposes which finds that reducing a precursor does 
not significantly reduce PM2.5 concentrations, and therefore 
determines that controls are not needed for any sources of that 
precursor (not just major sources) for attainment purposes. EPA has 
long recognized the scientific basis for concluding that there are 
multiple precursors to PM10, and in particular to 
PM2.5 (Section III of Preamble of PM2.5 SIP 
Requirements Rule).
    After Ohio's submission of the attainment plan by the CAA required 
date of October 14, 2016, EPA released a November 17, 2016 memorandum 
from Steve Page entitled ``Draft PM2.5 Precursor 
Demonstration Guidance'' (precursor guidance), which provides guidance 
to states on methods to evaluate if sources of a particular precursor 
contribute significantly to PM2.5 levels in the 
nonattainment area. The precursor guidance provides a detailed 
description of potential modeling approaches and presents possible 
thresholds to use in determining whether sources of a particular 
precursor contribute significantly to PM2.5 levels in the 
area. Although there is no explicit concentration which EPA has 
determined represents a significant contribution for PM2.5 
precursor demonstrations, the precursor guidance suggests that a 
contribution level of 0.2 [micro]g/m\3\, for annual average 
PM2.5, could be considered an air quality change that is 
``insignificant.'' The specific methods and analysis utilized by Ohio 
regarding precursors are generally consistent with the PM2.5 
SIP Requirements Rule and precursor guidance and are described in 
detail in the sections below regarding planning requirements and NNSR 
requirements.

B. CAA PM2.5 Moderate Area Nonattainment SIP Requirements

    With respect to the requirements for an attainment plan for the 
2012 PM2.5 NAAQS, the general CAA part D nonattainment area 
planning requirements are found in subpart 1, and the Moderate area 
planning requirements specifically for particulate matter are found in 
subpart 4.
    EPA utilizes a longstanding general guidance document that 
interprets the 1990 amendments to the CAA commonly referred to as the 
``General Preamble'' (57 FR 13498, April 16, 1992). The General 
Preamble addresses the relationship between the subpart 1 and the 
subpart 4 requirements and provides recommendations to states for 
meeting statutory requirements for particulate matter attainment 
planning. Specifically, the General Preamble explains that requirements 
applicable to Moderate area attainment plan SIP submissions are set 
forth in subpart 4, but such SIP submissions must also meet the general 
attainment planning provisions in subpart 1, to the extent these 
provisions ``are not otherwise subsumed by, or integrally related to,'' 
the more specific subpart 4 requirements (57 FR 13538). Additionally, 
EPA finalized the PM2.5 SIP Requirements Rule to clarify our 
interpretations of the statutory requirements that apply to Moderate 
and ``Serious'' PM2.5 nonattainment areas under subparts 1 
and 4.
    The CAA requirements of subpart 1 for attainment plans include: (i) 
The section 172(c)(1) RACM/reasonably available control technology 
(RACT) and attainment demonstrations; (ii) the section 172(c)(2) 
requirement to demonstrate RFP; (iii) the section 172(c)(3) requirement 
for emission inventories; (iv) the section 172(c)(5) requirements for a 
NNSR permitting program; and (v) the section 172(c)(9) requirement for 
contingency measures.
    The CAA subpart 4 requirements for Moderate areas are generally 
comparable with the subpart 1 requirements and include: (i) The section 
189(a)(1)(A) NNSR permit program requirements; (ii) the section 
189(a)(1)(B) requirements for attainment demonstration; (iii) the 
section 189(a)(1)(C) requirements for RACM; and (iv) the section 189(c) 
requirements for RFP and quantitative milestones. Section 189(e) also 
requires that states regulate major sources of PM2.5 
precursors in a nonattainment area, unless EPA approves a demonstration 
excusing the state from regulating such sources. In addition, under 
subpart 4 Moderate areas must provide for attainment of the current 
PM2.5 annual standard as expeditiously as practicable but no 
later than the end of the 6th calendar year after designation, which is 
December 31, 2021.

II. EPA's Evaluation of the Submission

    OEPA, in coordination with the Lake Michigan Air Directors 
Consortium (LADCO), developed the attainment plan SIP submission for 
the Cleveland area. This plan was subsequently put through public 
process, adopted by the state, and submitted by the OEPA to EPA. This 
section describes the relevant contents of the 2012 PM2.5 
NAAQS attainment plan SIP submission and EPA's rationale for proposing 
approval of the required SIP elements of RACM, attainment 
demonstration, emissions inventory, and precursor demonstrations for 
both NNSR and attainment planning purposes.
    The 2012 PM2.5 attainment plan contains SIP provisions 
to address the requirements for a Moderate PM2.5 
nonattainment area, including RACT/RACM, emissions inventory, modeling, 
attainment demonstration, transportation conformity and motor vehicle 
emissions budgets, RFP with quantitative milestones, and contingency 
measures. EPA is proposing to approve the RACM, emissions inventory, 
attainment demonstration, and precursor demonstrations for NNSR and 
attainment planning purposes, as fully meeting the requirements of the 
CAA and the applicable Federal regulations. Preliminary monitoring data 
indicate that the area is attaining the standard for the 2015-2017 
design value period. If confirmed, certain planning requirements may be 
suspended per the clean data policy (40 CFR 51.1015(a)). EPA will 
continue to review other elements of the attainment plan submission in 
order to determine if they are necessary for the area to attain the 
standard and act on them accordingly.

Emissions Inventory 1
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    \1\ Note that this guidance was also updated in 2017. See 
``Emissions Inventory Guidance for Implementation of Ozone and 
Particulate Matter National Ambient Air Quality Standards (NAAQS) 
and Regional Haze Regulations'' (EPA-454/B-17-003, July 2017).
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    Section 172(c)(3) of the CAA requires the development of an 
emissions inventory for nonattainment areas. In addition, the planning 
and associated modeling requirements set forth in CAA section 189(a) 
make the development of an accurate and up-to-date emissions inventory 
a critical element of any viable attainment plan. EPA guidance 
specifies the best practices for developing an emissions inventory for 
PM2.5 nonattainment areas per EPA's ``Emissions Inventory 
Guidance for Implementation of Ozone and Particulate Matter National 
Ambient Air

[[Page 25610]]

Quality Standards (NAAQS) and Regional Haze Regulations'' (EPA-454/B-
07-002, April 2007). The 2012 PM2.5 NAAQS SIP submission 
contains planning inventories of emission sources and emission rates 
for the base year of 2011 and the projected attainment year of 2021. 
OEPA selected the year 2011 as the base year because it is one of the 
three years for which air quality data was used to designate the area 
as nonattainment. Additionally, OEPA and LADCO determined that high-
quality emissions information was already available from the National 
Emissions Inventory (NEI) for 2011. LADCO developed the base year 
emissions inventory for the nonattainment area using the NEI, with 
additional information for on-road and nonroad mobile sources, marine, 
aircraft, and rail sources. Table 1 provides a summary of the annual 
2011 emissions inventory for the Cleveland nonattainment area for 
direct PM2.5 and all PM2.5 precursors.
    OEPA's submission included detailed information for the sources in 
the emissions inventory including facility name, ID, location, and 
emissions, as well as documentation on mobile source model inputs for 
both on-road and nonroad sources (See Docket submission and Appendix 
C).

                                 Table 1--Annual Emissions Inventory for Cleveland Area for Direct PM2.5 and Precursors
                                                                          [tpy]
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                                                                       PM2.5
                  County/source sector                   --------------------------------       NOX             SO2             NH3             VOC
                                                            Filterable      Condensable
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Cuyahoga:
    Area (nonpoint).....................................         1143.13          234.61         4989.24          188.94          670.62        12116.58
    Marine, Aircraft, Rail (MAR)........................           96.88            0.02         2822.27          187.78            0.99          288.66
    Nonroad.............................................          508.69            0.00         6045.40           17.35            8.66         8349.38
    Onroad..............................................          800.00            0.00        18764.59          132.17          428.60         8568.15
    Point EGU...........................................           32.90           33.50          771.22         1941.86            0.10           11.40
    Point Non-EGU.......................................          599.48          407.26         2404.05         4461.80           65.87          986.52
    Prescribed Fire.....................................            4.92            0.00            1.20            0.54            0.88           12.61
Lorain:
    Area (nonpoint).....................................          477.68           72.00          844.19           44.37          448.73         2721.24
    Marine, Aircraft, Rail (MAR)........................           44.39            0.00         1289.44           55.68            0.57           73.94
    Nonroad.............................................          160.82            0.00         1971.11            5.39            2.66         3009.78
    Onroad..............................................          195.49            0.00         4580.85           31.75          101.84         2177.01
    Point EGU...........................................           94.90          298.62         4673.50        32041.30            0.54           31.82
    Point Non-EGU.......................................          156.45          175.78          705.89          374.63            3.01          916.35
    Prescribed Fire.....................................            0.00            0.00            0.00            0.00            0.00            0.00
                                                         -----------------------------------------------------------------------------------------------
        Total...........................................         4615.72         1521.80        49862.95        39483.56         1736.07        39263.44
--------------------------------------------------------------------------------------------------------------------------------------------------------

    EPA has reviewed the base-year emissions inventory and finds that 
it satisfies the CAA section 172(c)(3) requirement for a comprehensive, 
accurate and current inventory of actual 2011 emissions of the relevant 
pollutants for PM2.5 in the Cleveland area. Thus, EPA 
proposes to approve the base year emissions inventory in the SIP 
submission.

Attainment Demonstration and Modeling

    Section 189(a)(1)(B) requires that a PM2.5 Moderate area 
SIP contain either a demonstration that the plan will provide for 
attainment by the applicable attainment date, or a demonstration that 
attainment by such date is impracticable. In the attainment 
demonstration of the 2016 SIP submission, OEPA described how the 
attainment plan would provide for attainment of the 2012 
PM2.5 NAAQS by the attainment date of December 31, 2021.
    Using air quality modeling, an attainment demonstration must 
project that future air quality levels in the nonattainment area will 
be below the standard. OEPA and LADCO conducted modeling in accordance 
with EPA's April 2007 (and where appropriate, draft December 2014) 
``Guidance on the Use of Models and Other Analyses for Demonstrating 
Attainment of Air Quality Goals for Ozone, PM2.5, and 
Regional Haze.'' (attainment demonstration modeling guidance) (EPA-454/
B-07-002, April 2007). OEPA modeling is also consistent with the 
November 2005 Appendix W requirement used at the time by OEPA and is 
still consistent with the updated January 2017 (82 FR 5182) ``Guideline 
on Air Quality Models.'' (CFR Title 40, Part 51, Appendix W.) In 
addition, OEPA submitted a precursor demonstration that is consistent 
with the recommendations contained in EPA's precursor guidance document 
released in November 2016. (``PM2.5 Precursor Demonstration 
Guidance,'' memorandum issued by Steven Page, Director of EPA Office of 
Air Quality Planning and Standards, November 17, 2016).
    Per the PM2.5 SIP Requirements Rule, the attainment 
demonstration modeling guidance provides recommendations that include: 
Developing a conceptual description of the problem to be addressed; 
developing a modeling/analysis protocol; selecting an appropriate model 
to support the demonstration; selecting appropriate meteorological 
episodes or time periods to model; choosing an appropriate area to 
model with appropriate horizontal/vertical resolution; generating 
meteorological and air quality inputs to the air quality model; 
generating emissions inputs to the air quality model; and, evaluating 
performance of the air quality model. After these steps are completed, 
the state can apply a model to simulate effects of future year 
emissions and candidate control strategies.
    OEPA and LADCO calculated the baseline design value for 
PM2.5 using the procedures contained in appendix N to 40 CFR 
50, ``Interpretation of the National Ambient Air Quality Standards for 
Particulate Matter,'' and EPA attainment demonstration modeling 
guidance. Ambient PM2.5 concentrations for the 2009-2013 
time frame (a weighted average of the 2009-2011, 2010-2012, and 2011-
2013 design value periods, as recommended by the

[[Page 25611]]

Modeling Guidance) were used to calculate baseline design values 
ranging from 9.64-12.82 [micro]g/m\3\ for the seven PM2.5 
monitoring locations in the nonattainment area (see Table 2). Detailed 
methods for the baseline design value calculations are in Appendix B of 
the 2016 SIP submission (See Docket).
    Next, OEPA and LADCO compiled base-year emission inventories (as 
discussed above) and projected emission inventories for the attainment 
year 2021. LADCO utilized emission inventories compiled by EPA for the 
years 2011, 2017, and 2025 as the starting point. EPA's 2011 emissions 
inventory (Version 2011eh) is based on the 2011 NEI, version 2 
(2011NEIv2). The inventory uses hourly 2011 continuous emissions 
monitoring system (CEMS) data for electric generating units (EGUs) 
emissions, hourly on-road mobile emissions, and 2011 day-specific wild 
and prescribed fire data. Emissions include all criteria pollutants and 
precursors (CAPs), and a few hazardous air pollutants (HAPs). See EPA's 
Technical Support Document (EPA, 2015A) for a thorough description of 
the methodology used to develop the 2011 emissions inventory.
    EPA projected future emission inventories for the years 2017 and 
2025 based on the 2011 baseline inventory. The future-year scenarios 
incorporate current ``on-the-books'' regulations, and do not include 
any additional measures or controls. See, EPA (2015A) for a thorough 
description of the methodology used to project future emissions. For 
most emissions categories, LADCO developed the 2021 future-year 
emissions inventory by interpolating between EPA's 2017 and 2025 
inventories. The interpolation was done for each model species at each 
model cell for every model hour. However, LADCO developed updated 2021 
EGU emissions by using the Eastern Regional Technical Advisory 
Committee EGU Tool (ERTAC) and updated 2021 regional on-road mobile 
emissions using EPA's Motor Vehicle Emission Simulator (MOVES2014) and 
Ramboll-Environ emissions (See Appendix B and C for detailed 
discussion).
    For EGU projections, Ohio and LADCO relied on the U.S. Energy 
Information Administration's ``High Oil and Gas Resource'' (See Docket 
for detailed discussion). The projected emissions inventory not only 
accounts for growth in economic sectors, but also includes emissions 
controls (existing or future regulations) that will impact sources in 
the area. In this case, OEPA and LADCO only modeled controls that have 
been promulgated, with no new future controls being added since OEPA 
has determined that additional RACT and RACM would not be necessary for 
expeditious attainment, and that current controls in the area are 
sufficient to meet the RACM requirement. For modeling purposes no 
additional RACM/RACT was applied to future year inventories.
    The base-year and projected emission inventories were used in a 
photochemical grid model, the Comprehensive Air Quality Model with 
extensions (CAMx), to project the expected change from base-year to 
future year design values. The modeled attainment demonstration results 
in a predicted future-year concentration at each PM2.5 
ambient monitor location within the Cleveland nonattainment area. The 
results from the CAMx modeling were then used as inputs to EPA's 
Modeled Attainment Test Software (MATS) to calculate the design values 
for each monitored location in the attainment year 2021 using 
information on current PM2.5 speciation. Modeled attainment 
year results show that the area is expected to meet the standard (all 
2021 values at existing monitor locations are below 12.0 [mu]g/m\3\) by 
the 2021 attainment date (See Table 2).

                          Table 2--Projected PM2.5 Design Values ([mu]g/m\3\) for 2021
----------------------------------------------------------------------------------------------------------------
                                                                                         2021
                      County                          Monitor ID     2011 Baseline     Projected
                                                                     design value    design value
--------------------------------------------------------------------------------------------------
Cuyahoga..........................................     39-035-0034           10.02            8.07
                                                       39-035-0038           12.82           10.69
                                                       39-035-0045           11.99            9.84
                                                       39-035-0060           12.79           10.45
                                                       39-035-0065           12.49           10.32
                                                       39-035-1002           10.36            8.41
Lorain............................................     39-093-3002            9.64            8.08
----------------------------------------------------------------------------------------------------------------

    Based on the above, EPA is proposing to approve OEPA's 
demonstration of attainment for 2021 as meeting the statutory 
requirement in CAA 189(a)(1)(B).

RACM/RACT Requirements

    The general SIP planning requirements for nonattainment areas under 
subpart 1 include CAA section 172(c)(1), which requires implementation 
of all RACM (including RACT). Section 172(c)(1) requires that 
attainment plans provide for the implementation of RACM (including 
RACT) to provide for attainment of the NAAQS. Therefore, what 
constitutes RACM and RACT is related to what is necessary for 
attainment, as well as expeditious attainment, in a given area.
    Subpart 4 also requires states to develop attainment plans that 
evaluate potential control measures and impose RACM and RACT on sources 
within a Moderate nonattainment area that are necessary to 
expeditiously attain the NAAQS. Specifically, CAA section 189(a)(1)(C) 
requires that Moderate nonattainment plans provide for implementation 
of RACM and RACT no later than four years after the area is designated 
as nonattainment. As with subpart 1, the terms RACM and RACT are not 
defined within subpart 4. Nor do the provisions of subpart 4 specify 
how states are to meet the RACM and RACT requirements. However, EPA's 
longstanding guidance in the General Preamble provides recommendations 
for determining which control measures constitute RACM and RACT for 
purposes of meeting the statutory requirements of subpart 4 (57 FR 
13540-13541).
    For both RACM and RACT, EPA notes that an overarching principle is 
that if a given control measure is not needed to attain the relevant 
NAAQS in a given area as expeditiously as practicable, then that 
control measure would not be required as RACM or RACT because it would 
not be reasonable to impose controls that are not in fact needed for 
attainment purposes. Accordingly, a RACM and RACT analysis is a process 
to identify emission sources, evaluate

[[Page 25612]]

potential emission controls, and impose those control measures and 
technologies that are reasonable and necessary to bring the area into 
attainment as expeditiously as practicable, but by no later than the 
statutory attainment date for the area.
    EPA has long applied a policy that states must evaluate the 
combined effect of reasonably available control measures that, if 
implemented collectively, would advance the attainment date by at least 
one year and should be adopted. Since the area's preliminary data 
indicate that it will attain the NAAQs based on the 2015-2017 design 
value period, it is not necessary to implement additional controls. The 
data indicates that the area is attaining the standard with current 
Federal, state, and local permanent and enforceable measures.
    OEPA provided a RACM and RACT analysis in Appendix E of the 2012 
PM2.5 attainment plan SIP submission. Ohio has found that 
existing measures for PM2.5, SO2 and 
NOX for area sources, mobile sources and stationary sources 
constitute RACT/RACM (80 FR 68253; 81 FR 58402; 82 FR 16938). Some of 
the current controls for the area that are sufficient to meet the RACM/
RACT requirement include: Existing PM2.5 and ozone RACT 
rules, mobile source controls, SO2 reductions from 2010 
SO2 nonattainment areas including a large EGU in neighboring 
Lake County, Federal interstate transport rules, and regional haze.
    OEPA provided an attainment analysis that consisted of: First, a 
modeling demonstration that the area would attain by the attainment 
date in 2021 with current on-the-books controls and measures; and 
second, a demonstration showing that by interpolating modeled future 
values from 2021 with 2016 design values at the monitored sites, the 
area would be attaining the standard in both 2020 (at 11.0 [mu]g/m\3\) 
and 2019 (at 11.3 [mu]g/m\3\) at the design value monitor prior to the 
2021 statutory attainment date. The interpolation suggested that the 
area would attain at the end of 2017, similar to EPA modeling analysis 
discussed below, and is now verified by the preliminary 2015-2017 
design values that indicate the area is likely attaining as of the end 
of 2017. In addition, the PM2.5 SIP Requirements Rule 
outlines the option for states to do an additional modeling 
demonstration to show that specific PM2.5 precursors are not 
significant contributors to PM2.5 levels that exceed the 
standard in the area. OEPA provided a precursor demonstration modeling 
analysis that was intended to demonstrate that emissions of 
NH3 and VOC are not significant PM2.5 precursors 
for attainment planning purposes.

Precursor Demonstration for Attainment Planning Purposes

    For the precursor demonstration, OEPA and LADCO initially performed 
a ``concentration-based'' contribution analysis using speciated 
monitoring data to determine whether NH3 or VOC contribute 
significantly to PM2.5 concentrations in the area, based on 
monitored values alone. However, using the assumption suggested in the 
draft precursor demonstration guidance that all NH3 
emissions are associated with the nitrate portion of PM2.5 
mass, and that all VOC emissions are associated with the organic carbon 
portion of PM2.5 mass, the state could not determine that 
these precursors did not make a significant contribution.
    Therefore, the state proceeded with a sensitivity analysis to 
determine the impact of reducing NH3 and VOC emissions on 
PM2.5 concentrations in the nonattainment area. OEPA and 
LADCO performed a modeled sensitivity analysis for attainment planning 
purposes using the 2021 attainment year concentrations at each monitor 
in the Cleveland area. LADCO applied a 40% emission reduction to 
anthropogenic sources of NH3 and VOC emissions for all 
source categories in the Cleveland nonattainment area. The OEPA 
submission indicated that the 40% comprehensive reduction was chosen 
because it was within the range of a previously published, 
comprehensive sensitivity analysis done in photochemical modeling which 
typically uses 30-50% when applying the reduction across all emission 
sectors--as done for this analysis.\2\
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    \2\ EPA examined examples in the published literature of general 
sensitivity modeling studies that look at the impact of across-the-
board percentage reductions in precursor emissions on secondary 
pollutants (including PM2.5, PM10, and ozone) 
(Vieno, 2016; Megaritis, 2013; Harrison, 2013; Derwent, 2014; Liu, 
2010; Pun, 2001). The majority of studies have used across the board 
percentage precursor emissions reductions of between 30% and 60%, 
with the most common reduction percentages being 30% and 50%.
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    The submission was made by the state prior to the date that the 
precursor guidance was issued by EPA; however, the modeled reduction 
levels are still within the suggested range of 30-70% reductions found 
in the precursor guidance.
    The results of the 2021 attainment planning sensitivity analyses 
show modeled impacts from reducing NH3 by 40% on 
PM2.5 concentrations at the monitors ranging from 0.10-0.21 
[micro]g/m\3\, and modeled impacts from reducing VOC ranging from 0.0-
0.01 [micro]g/m\3\. Although there is no explicit concentration which 
EPA has determined represents a significant contribution, the current 
draft precursor guidance suggests that a contribution level of 0.2 
[micro]g/m\3\ is an appropriate recommended threshold to identify an 
air quality change that is ``insignificant'' for annual average 
PM2.5. In this case, all modeled impacts for VOC emissions 
are well below the recommended threshold, and most of the modeled 
NH3 impacts are at or below the threshold as well, with only 
one ambient air quality monitor showing modeled ambient 
PM2.5 levels slightly above the recommended threshold (at 
0.21 [micro]g/m\3\).
    EPA's precursor guidance noted that there may be cases where 
precursor emissions have an impact above the recommended contribution 
thresholds, yet do not ``significantly contribute'' to levels that 
exceed the standard in the area (pursuant to section 189(e)). Under the 
PM2.5 SIP Requirements Rule, the significance of a 
precursor's contribution is to be determined ``based on the facts and 
circumstances of the area.'' Air agencies may thus provide EPA with 
information related to other factors they believe should be considered 
in determining whether the contribution of emissions of a particular 
precursor to levels that exceed the NAAQS is ``significant'' or not. 
Such factors may include: The amount by which a precursor's 
contribution exceeds the recommended contribution thresholds; the 
severity of nonattainment at relevant monitors and/or grid cell 
locations in the area; trends in ambient speciation data and precursor 
emissions; and any other relevant information.
    Based on a number of factors, in this case EPA believes that 
NH3 is not a significant precursor. The relevant factors 
include: The magnitude of the amount above the threshold is small 
compared to the total threshold amount (5% of the total threshold 
amount); the area continues to trend downward in both ambient 
monitoring data and emissions in direct PM2.5 and 
precursors; current preliminary monitoring data shows the area is 
attaining the standard; and additionally, this small amount of 
PM2.5 resulting from NH3 would not interfere with 
the area's ability to attain the standard, as evidenced by the fact 
that the preliminary 2015-2017 design value is 0.7 [micro]g/m\3\ below 
the NAAQS. Regardless of the finding of significance for these 
precursors, the area is expected to attain (based on preliminary design 
values) with only current controls in place, and it would not be 
required to control any sources further. Additionally, the area

[[Page 25613]]

has preliminary 2015-2017 data indicating that it has a three-year 
design value below the level of the NAAQS, so that any additional 
controls would not be implemented until well after the area has 
attained the standard.
    Based on the above, EPA agrees with the determination by Ohio that 
for attainment planning purposes, additional controls on existing 
sources of NH3 and VOC emissions do not need to be imposed.

RACM/RACT Analysis

    OEPA conducted a six-step RACM analysis that focused on direct 
PM2.5, NOX, and SO2: (1) Identify 
sources in the area for PM2.5, NOX, and 
SO2--that comprised over 90% of the emissions for each 
pollutant over all source categories; (2) identify potential control 
measures; (3) evaluate technological feasibility; (4) evaluate economic 
feasibility; (5) determine if the measures can be implemented within 
both four and five years; (6) evaluate the earliest practical year for 
attainment.
    As detailed in OEPA's RACT/RACM analysis in Appendix E, many of the 
sources are already well controlled. The state then identified current 
controls for each source as well as any additional measures or controls 
that are potentially available to each of the identified sources using 
EPA's ``Menu of Control Measures'' document, available online at http://www.epa.gov/air/criteria.html and the RACT/BACT/LAER Clearinghouse 
(RBLC) at http://cfpub.epa.gov/rblc/. OEPA then determined if any of 
the identified controls were technologically or economically feasible 
using EPA's the method outlined in the PM2.5 SIP 
Requirements Rule, which can include factors such as a source's process 
and operating procedures, raw materials, physical plant layout, and 
potential environmental impacts such as increased water pollution, 
waste disposal and energy requirements (see 40 CFR 51.1009(a)(3)(i)).
    In regard to area and mobile sources, a state may tailor the 
analysis to the considerations that are relevant to the local 
circumstances, such as the condition and extent of needed 
infrastructure, population size, and workforce type and habits, all of 
which may impact the availability of potential control measures in the 
area. (81 FR 58010)
    OEPA also determined economic feasibility of each identified 
measure or technology. That analysis included consideration of the cost 
of reducing emissions in the area and the difference between the cost 
of an emissions reduction measure at a particular source in the area 
and the cost of emissions reduction measures that have been implemented 
at similar sources in the same or other areas.
    OEPA determined that the technologically feasible measures that 
were identified were not economically feasible. For example, the state 
determined that the cost-effectiveness ranged from $5800 per ton to 
more than $40,000 per ton for measures that were found to be 
technologically feasible for major stationary sources. In addition, the 
highest costs of reductions were generally linked to controls of direct 
PM2.5, and OEPA has determined that reductions in direct 
PM2.5 would be the most effective at reducing the monitored 
concentrations in the Cleveland area. Thus, the state found that the 
most effective controls are not reasonable to implement based on cost.
    Finally, OEPA analyzed the implementation time frame of controls 
within four years and the earliest applicable attainment date, which by 
interpolation would be the end of 2017, and determined that the area 
would attain the standard prior to the state rulemaking and 
implementation of additional controls in the area. In fact, the area 
has preliminary 2015-2017 data indicating that it has a three-year 
design value below the level of the NAAQS, making implementation of 
additional controls to achieve attainment moot.
    As noted by OEPA, both the Federal and state ``on the books'' 
controls have led to additional control and will lead to additional 
emissions reductions in the future. Because of the historic 
nonattainment status of this area for both ozone and PM2.5, 
the Cleveland nonattainment area is one of the most well controlled 
areas in the state for pollutants contributing to formation of both 
PM2.5 and ozone. Ohio's current rules, current controls and 
the Federal ``on the books'' controls continue to satisfy RACT/RACM for 
the annual PM2.5 standard. Some of the current controls that 
are sufficient to meet the RACT/RACM requirement are Ohio's current 
RACT program found in Ohio Administrative Code (OAC) Chapter 3745-17, 
which controls NOX; rules under OAC Chapter 3745-18 which 
control SO2 sources for the state; and the inspection and 
maintenance program contained in OAC Chapter 3745-26, which reduces 
emissions of NOX and VOC from on-road vehicles. OEPA has 
determined that no additional controls are feasible to implement as 
RACM/RACT in the Cleveland area, and that current controls meet the 
requirement for RACM under 172(c)(1) and 189(a)(1)(C).
    EPA finds OEPA's determination reasonable, and is proposing to 
approve OEPA's determination that current controls meet the RACM/RACT 
requirement and that additional controls are not reasonable for other 
sources in the area or necessary to expeditiously attain the NAAQS.
    As noted above, the attainment demonstration modeling analysis 
reflecting 2021 projected emissions based on only current controls 
shows that projected 2021 air quality values at monitoring sites in the 
area range from 8.07-10.69 [micro]g/m\3\, well below the standard. 
Monitoring data for the 2014-2016 design values show only one monitor 
in the area is above the standard at 12.2 [micro]g/m\3\, and is 
trending downward. Interpolation between current and projected monitor 
values indicates that the area is likely to attain the standard with 
current controls by the end of the 2017 calendar year. Current, 
preliminary monitored design values for the years 2015-2017 shows the 
highest values being monitored in the Cleveland area is 11.3 [mu]g/
m\3\. EPA also conducted modeling in 2015 in support of regulatory 
initiatives regarding the revised ozone NAAQS and interstate transport 
(Appendix B), and these analyses also indicate that the Cleveland area 
will attain the PM2.5 NAAQS well before the outermost 
attainment date of December 31, 2021.
    Based on the above, EPA is proposing to find that current controls 
on sources in the nonattainment area meet the requirements of section 
172(c)(1) and section 189(a)(1)(C) of the CAA. Accordingly, EPA is 
proposing to approve current controls: Federal mobile source standards, 
transport rules, Regional Haze plans, and state VOC RACT rules as 
meeting the RACM/RACT provisions.

Nonattainment NSR Precursor Demonstration

    In addition to the attainment planning precursor demonstrations, 
which showed that neither existing sources of VOC nor existing sources 
of NH3 have a significant contribution to PM2.5 
concentrations, OEPA provided an analysis for both VOC and 
NH3 intended to show that increases in emissions of these 
precursors that may result from new or modified sources would not make 
a significant contribution to PM2.5 concentrations in the 
area. This demonstration is intended to justify the state's 
determination that major stationary sources of these precursors do not 
need to be regulated under the NNSR program for the area. For NNSR 
permitting purposes, CAA section 189(e), as interpreted by the 
PM2.5 SIP

[[Page 25614]]

Requirements Rule, provides an option for the state to provide a 
precursor demonstration intended to show that increases in emissions 
from potential new and existing major stationary sources of a 
particular precursor would not contribute significantly to levels that 
exceed the 2012 PM2.5 NAAQS in a particular nonattainment 
area. 40 CFR 51.1006(a)(3). In particular, EPA's regulations provide 
that a state choosing to submit an NNSR precursor demonstration should 
evaluate the sensitivity of PM2.5 levels in the 
nonattainment area to an increase in emissions of the precursor. If the 
state demonstrates that the estimated air quality changes determined 
through such an analysis are not significant, based on the facts and 
circumstances of the area, the state may use this information to 
identify new major stationary sources and major modifications of a 
precursor that will not be considered to contribute significantly to 
PM2.5 levels that exceed the standard in the nonattainment 
area under CAA section 189(e). Id. 51.1006(a)(3)(i). If EPA approves 
the state's NNSR precursor demonstration for a nonattainment area, 
major sources of the relevant precursor can be exempted from the NNSR 
major source permitting requirements for PM2.5 with respect 
to that precursor. Id. 51.1006(a)(3)(ii).
    For NNSR permitting purposes, sensitivity analyses examine 
potential increases in emissions through a model simulation that 
evaluates the effect on PM2.5 concentrations in the area 
resulting from a given set of precursor emission increases from one or 
more new or modified stationary sources. Ohio's 2011 and 2021 
comprehensive modeling inventories were used for this analysis. To help 
determine a theoretical growth scenario as a result of major source 
expansion (new or modified), Ohio first prepared inventories for VOC 
and NH3 for 2008 to 2014 for the entire State from Ohio's 
annual emissions reporting program. Ohio used inventories for the 
entire State in order to determine what types of major sources/source 
categories are likely to expand (new or modified) within the Cleveland 
area and at what magnitude (tons per year) those expansions are likely 
to occur. These inventories and the full detailed analysis are 
contained in Appendix F of Ohio's submission.
    Consistent with EPA's regulation and draft guidance, OEPA and LADCO 
have performed sensitivity analyses of potential increases in emissions 
through a model simulation that evaluates the effect on 
PM2.5 concentrations in the nonattainment area (including 
unmonitored areas) resulting from a given set of hypothetical 
NH3 or VOC precursor emission increases from modified major 
stationary sources of the respective precursors in the nonattainment 
area. The inventories and the full detailed analysis are contained in 
Appendix F of Ohio's submission. For the NH3 analysis, Ohio 
assumed emissions increases at three existing locations of 
NH3 in the area, as these would be the most likely future 
areas of growth in the Cleveland area. EPA believes that the use of the 
historical inventories to predict growth is reflective of the future 
potential increases specific to the Cleveland area given the current 
types of facilities and their respective locations, the urban density 
and ability to expand or build, as well as the types of state 
regulation or other Federal requirements (such as National Emission 
Standards for Hazardous Air Pollutants) on facility types and controls 
required for other pollutants. EPA believes that this is an acceptable 
approach to estimating potential future growth.
    In addition to the modeled emissions increases based on historical 
growth at sources, LADCO and OEPA did an additional NH3 
modeling analysis (submitted July 18, 2017) based on a 100 tpy 
emissions increase (to represent major sources) in each modeled grid 
cell in the nonattainment area. EPA believes that this is a 
sufficiently conservative analysis that exceeds the level of actual 
potential NH3 emissions growth likely to occur in the area. 
Both of these approaches are consistent with suggested modeling in 
EPA's precursor guidance. Thus, EPA finds that this analysis serves as 
a reasonable evaluation of the sensitivity of PM2.5 
concentrations to a large emissions increase across the spatial area.
    For the VOC analysis, Ohio added 1,486 tpy of VOC emissions at 3 
existing source locations where VOC emissions increases potentially 
could occur in the nonattainment area. Compared to the 2011 inventory, 
this represents a 75% increase in VOC emissions from existing 
stationary sources (EGU and non-EGU). Compared to the 2021 projected 
inventory, this represents an 80% increase in stationary source 
emissions. For the NH3 analysis, Ohio added 325 tpy of 
NH3 emissions (scenario 1) to 3 existing source locations 
where NH3 emissions increases potentially could occur in the 
nonattainment area. Compared to the 2011 inventory, this represents a 
447% increase in NH3 emissions from existing stationary 
sources. Compared to the 2021 projected inventory, this represents a 
449% increase in NH3 from stationary sources. The additional 
NH3 analysis (scenario 2) had a total emissions increase of 
1,700 tpy, which is over 500% higher growth than the historical 
NH3 growth (scenario 1).
    Ohio found the addition of the NH3 emissions 
(approximately 350 tpy) into the model based on historical growth 
(scenario 1) would result in a peak impact of 0.08 [mu]g/m\3\, and the 
addition of the above VOC emissions would result in a peak impact of 
0.02 [mu]g/m\3\. The modeled impacts are well below the recommended 
significance contribution threshold of 0.2 [mu]g/m\3\; for VOC it is an 
order of magnitude difference, and for NH3 the maximum value 
is less than half the recommended significant contribution threshold 
level. The results of NH3 modeling for scenario 2 indicate 
that, even with a conservatively large NH3 increase, the 
maximum impact was 0.24 [mu]g/m\3\, which is only slightly above the 
recommended contribution threshold of 0.2 [mu]g/m\3\.
    While the increase is slightly above the recommended contribution 
threshold, EPA believes that it is reasonable to conclude that 
NH3 emissions from major stationary sources (in the context 
of a NNSR precursor demonstration) do not contribute significantly to 
PM2.5 concentrations in the nonattainment area for the 
following reasons: Historical growth of NH3 sources in the 
area are significantly less than what was modeled for scenario 2; the 
only likely future increases of NH3 emissions from major 
sources in the area are from the increased use of NH3 for 
EGU NOX control (ammonia slip) and would likely occur at 
existing EGUs (as modeled in scenario 1); the area continues to trend 
downward in both monitored PM2.5 concentrations and 
PM2.5 (direct and precursor) emissions; current preliminary 
monitoring data shows the area is attaining the standard; and, this 
small amount of additional ambient PM2.5 concentration, 
based on the modeling analysis, would therefore not interfere with the 
area's ability to attain the standard given that the current 
preliminary design value for 2015-2017 is 11.3 [mu]g/m\3\; and the 
additional modeled increase of 0.24 [mu]g/m\3\ would not impact the 
area's ability to attain or maintain the NAAQS.
    Based on the results of the modeling demonstration and the 
additional factors described in this section, EPA is proposing to 
approve Ohio's determination that emissions increases of either VOC or 
NH3 from new and modified major stationary sources would not 
contribute significantly to PM2.5 levels that exceed the 
2012 PM2.5 NAAQS in the Cleveland nonattainment

[[Page 25615]]

area. Accordingly, new or modified major sources of VOC and 
NH3 may be exempted from the state's NNSR program 
requirements for PM2.5 in the Cleveland PM2.5 
nonattainment area.

III. EPA's Proposed Action

    Ohio's attainment demonstration modeling, and precursor analysis 
for both attainment planning RACM and nonattainment NNSR determined 
that VOCs and NH3 do not significantly contribute to 
PM2.5 concentrations in the area. EPA finds that Ohio's 
analysis is reasonable and well supported. EPA is thus proposing to 
approve the following elements of the 2012 SIP submission: The base 
year 2011 emissions inventory to meet the section 172(c)(3) requirement 
for emission inventories; the demonstration of attainment for 2021 as 
meeting the statutory requirement in CAA 189(a)(1)(B); current controls 
as meeting RACM requirements of 172(c)(1) and 189(a)(1(C).

IV. Statutory and Executive Order Reviews

    Under the CAA, the Administrator is required to approve a SIP 
submission that complies with the provisions of the CAA and applicable 
Federal regulations. 42 U.S.C. 7410(k); 40 CFR 52.02(a). Thus, in 
reviewing SIP submissions, EPA's role is to approve state choices, 
provided that they meet the criteria of the CAA. Accordingly, this 
action merely approves state law as meeting Federal requirements and 
does not impose additional requirements beyond those imposed by state 
law. For that reason, this 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);
     Is not an Executive Order 13771 (82 FR 9339, February 2, 
2017) regulatory action because SIP approvals are exempted 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 CAA; and
     Does not provide EPA with the discretionary authority to 
address, as appropriate, disproportionate human health or environmental 
effects, using practicable and legally permissible methods, under 
Executive Order 12898 (59 FR 7629, February 16, 1994).
    In addition, 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, Incorporation by 
reference, Nitrogen dioxide, Ozone, Particulate matter, Reporting and 
recordkeeping requirements, Sulfur oxides, Volatile organic compounds.

    Dated: May 21, 2018.
Cathy Stepp,
Regional Administrator, Region 5.
[FR Doc. 2018-11748 Filed 6-1-18; 8:45 am]
 BILLING CODE 6560-50-P



                                                  25608                     Federal Register / Vol. 83, No. 107 / Monday, June 4, 2018 / Proposed Rules

                                                  Carolina. Pursuant to the Catawba                       address the Cleveland nonattainment                    FOR FURTHER INFORMATION CONTACT:
                                                  Indian Claims Settlement Act, S.C. Code                 area and evaluate the area’s ability to                Carolyn Persoon, Environmental
                                                  Ann. 27–16–120, ‘‘all state and local                   attain the 2012 PM2.5 NAAQS by the                     Engineer, Control Strategies Section, Air
                                                  environmental laws and regulations                      ‘‘Moderate’’ attainment date of                        Programs Branch (AR 18J),
                                                  apply to the [Catawba Indian Nation]                    December 31, 2021. The SIP submission                  Environmental Protection Agency,
                                                  and Reservation and are fully                           addresses specific requirements as                     Region 5, 77 West Jackson Boulevard,
                                                  enforceable by all relevant state and                   outlined in the CAA including:                         Chicago, Illinois 60604, (312) 353–8290,
                                                  local agencies and authorities.’’                       Attainment demonstration; reasonable                   persoon.carolyn@epa.gov.
                                                  However, EPA has determined that this                   available control measure (RACM)                       SUPPLEMENTARY INFORMATION:
                                                  proposed rule does not have substantial                 analysis; emissions inventory                          Throughout this document, wherever
                                                  direct effects on an Indian Tribe                       requirements; reasonable further                       ‘‘we’’, ‘‘us’’ or ‘‘our’’ is used, we mean
                                                  because, as it relates to prong 4, this                 progress (RFP) with quantitative                       EPA. This supplementary information
                                                  proposed action is not approving any                    milestones; and nonattainment new                      section is arranged as follows:
                                                  specific rule, but rather proposing to                  source review (NNSR). Additionally, the
                                                                                                                                                                 I. Background for EPA’s Proposed Action
                                                  determine that South Carolina’s already                 SIP submission includes optional PM2.5                    A. History of the PM2.5 NAAQS
                                                  approved SIP meets certain CAA                          precursor demonstrations for NNSR and                     B. CAA PM2.5 Moderate Area
                                                  requirements. As it relates to the                      attainment planning purposes. EPA has                        Nonattainment SIP Requirements
                                                  regional haze SIP, the proposal to                      evaluated the SIP submission and is                    II. EPA’s Evaluation of Submission
                                                  replace reliance on CAIR with reliance                  proposing to approve portions of the                   III. EPA’s Proposed Action
                                                  on CSAPR has no substantial direct                      submission as meeting the applicable                   IV. Statutory and Executive Order Reviews
                                                  effects because the reliance on CSAPR                   CAA requirements for RACM, emissions                   I. Background for EPA’s Proposed
                                                  for regional haze purposes in South                     inventory, attainment demonstration                    Action
                                                  Carolina already existed through a FIP.                 modeling, and precursor insignificance
                                                  EPA notes that these proposed actions                   demonstrations for NNSR and                            A. History of the 2012 PM2.5 NAAQS
                                                  will not impose substantial direct costs                attainment planning purposes. EPA is                      On December 15, 2012, EPA
                                                  on Tribal governments or preempt                        not acting on the other elements of the                promulgated the 2012 PM2.5 NAAQS,
                                                  Tribal law.                                             submission, including reasonable                       including a revision of the annual
                                                                                                          further progress (RFP), with quantitative              standard to 12.0 micrograms per cubic
                                                  List of Subjects in 40 CFR Part 52
                                                                                                          milestones, and motor vehicle emission                 meter (mg/m3) based on a 3-year average
                                                    Environmental protection,                             budgets (MVEBs).                                       of annual mean PM2.5 concentrations,
                                                  Administrative practice and procedure,                  DATES: Comments must be received on                    and maintaining the current 24-hour (or
                                                  Air pollution control, Incorporation by                 or before July 5, 2018.                                daily) standard of 35 mg/m3 based on a
                                                  reference, Intergovernmental relations,                 ADDRESSES: Submit your comments,                       3-year average of the 98th percentile of
                                                  Nitrogen dioxide, Ozone, Particulate                    identified by Docket ID No. EPA–R05–                   24-hour concentrations (78 FR 3086,
                                                  Matter, Reporting and recordkeeping                     OAR–2016–0644 at http://                               January 15, 2013). EPA established the
                                                  requirements, Sulfur oxides.                            www.regulations.gov, or via email to                   2012 PM2.5 NAAQS based on significant
                                                     Authority: 42 U.S.C. 7401 et seq.                    blakley.pamela@epa.gov. For comments                   evidence and numerous health studies
                                                    Dated: May 18, 2018.                                  submitted at Regulations.gov, follow the               demonstrating the serious health effects
                                                  Onis ‘‘Trey’’ Glenn, III,
                                                                                                          online instructions for submitting                     associated with exposures to PM2.5. The
                                                                                                          comments. Once submitted, comments                     Cleveland, Ohio area was designated
                                                  Regional Administrator, Region 4.
                                                                                                          cannot be edited or removed from                       ‘‘Moderate’’ nonattainment for the 2012
                                                  [FR Doc. 2018–11824 Filed 6–1–18; 8:45 am]
                                                                                                          Regulations.gov. For either manner of                  PM2.5 NAAQS based on ambient
                                                  BILLING CODE 6560–50–P                                  submission, EPA may publish any                        monitoring data showing that the area
                                                                                                          comment received to its public docket.                 was above the 12.0 mg/m3 standard. At
                                                                                                          Do not submit electronically any                       the time of designations, the Cleveland
                                                  ENVIRONMENTAL PROTECTION
                                                                                                          information you consider to be                         area had a design value of 12.5 mg/m3
                                                  AGENCY
                                                                                                          Confidential Business Information (CBI)                for the 2011–2013 monitoring period (80
                                                  40 CFR Part 52                                          or other information whose disclosure is               FR 2206, January 15, 2015).
                                                                                                          restricted by statute. Multimedia                         To provide guidance on the CAA
                                                  [EPA–R05–OAR–2016–0644; FRL–9978–87-                    submissions (audio, video, etc.) must be               requirements for state and tribal
                                                  Region 5]                                               accompanied by a written comment.                      implementation plans to implement the
                                                                                                          The written comment is considered the                  2012 PM2.5 NAAQS, EPA promulgated
                                                  Air Plan Approval; Ohio; Cleveland,
                                                                                                          official comment and should include                    the ‘‘Fine Particle Matter National
                                                  PM2.5 Attainment Plan
                                                                                                          discussion of all points you wish to                   Ambient Air Quality Standard: State
                                                  AGENCY:  Environmental Protection                       make. EPA will generally not consider                  Implementation Plan Requirements;
                                                  Agency (EPA).                                           comments or comment contents located                   Final Rule’’ (81 FR 58010, August 24,
                                                  ACTION: Proposed rule.                                  outside of the primary submission (i.e.                2016) (hereinafter, the ‘‘PM2.5 SIP
                                                                                                          on the web, cloud, or other file sharing               Requirements Rule’’). As part of the
                                                  SUMMARY:   On October 14, 2016, the                     system). For additional submission                     PM2.5 SIP Requirements Rule, EPA has
                                                  Ohio Environmental Protection Agency                    methods, please contact the person                     interpreted the requirements of the CAA
sradovich on DSK3GMQ082PROD with PROPOSALS




                                                  (OEPA) submitted a State                                identified in the FOR FURTHER                          to allow the state to provide a
                                                  Implementation Plan (SIP) submission                    INFORMATION CONTACT section. For the                   ‘‘precursor demonstration’’ to EPA that
                                                  for the 2012 Fine Particle (PM2.5)                      full EPA public comment policy,                        supports the determination that one or
                                                  National Ambient Air Quality Standards                  information about CBI or multimedia                    more PM2.5 precursors need not be
                                                  (‘‘NAAQS’’ or ‘‘standards’’) for the                    submissions, and general guidance on                   subject to control and planning
                                                  Cleveland nonattainment area. As                        making effective comments, please visit                requirements in a given nonattainment
                                                  required by the Clean Air Act (CAA),                    http://www2.epa.gov/dockets/                           area. EPA has determined that sulfur
                                                  OEPA developed an attainment plan to                    commenting-epa-dockets.                                dioxide (SO2), nitrogen oxides (NOX),


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                                                                            Federal Register / Vol. 83, No. 107 / Monday, June 4, 2018 / Proposed Rules                                                 25609

                                                  volatile organic compounds (VOC) and                    requirements are found in subpart 1,                   II. EPA’s Evaluation of the Submission
                                                  ammonia (NH3) are precursors to PM,                     and the Moderate area planning                            OEPA, in coordination with the Lake
                                                  and thus the attainment plan                            requirements specifically for particulate              Michigan Air Directors Consortium
                                                  requirements of subpart 4 initially apply               matter are found in subpart 4.                         (LADCO), developed the attainment
                                                  equally to emissions of direct PM2.5 and                   EPA utilizes a longstanding general                 plan SIP submission for the Cleveland
                                                  all of its identified precursors. Section               guidance document that interprets the                  area. This plan was subsequently put
                                                  189(e) of the CAA explicitly requires the               1990 amendments to the CAA                             through public process, adopted by the
                                                  control of major stationary sources of                  commonly referred to as the ‘‘General                  state, and submitted by the OEPA to
                                                  PM2.5 precursors, unless there is a
                                                                                                          Preamble’’ (57 FR 13498, April 16,                     EPA. This section describes the relevant
                                                  demonstration to the satisfaction of the
                                                                                                          1992). The General Preamble addresses                  contents of the 2012 PM2.5 NAAQS
                                                  EPA Administrator that such major
                                                                                                          the relationship between the subpart 1                 attainment plan SIP submission and
                                                  stationary sources do not contribute
                                                                                                          and the subpart 4 requirements and                     EPA’s rationale for proposing approval
                                                  significantly to PM levels that exceed
                                                                                                          provides recommendations to states for                 of the required SIP elements of RACM,
                                                  the standards in the area. Accordingly,
                                                                                                          meeting statutory requirements for                     attainment demonstration, emissions
                                                  a state can also provide a precursor
                                                                                                          particulate matter attainment planning.                inventory, and precursor
                                                  demonstration for attainment planning
                                                  purposes which finds that reducing a                    Specifically, the General Preamble                     demonstrations for both NNSR and
                                                  precursor does not significantly reduce                 explains that requirements applicable to               attainment planning purposes.
                                                  PM2.5 concentrations, and therefore                     Moderate area attainment plan SIP                         The 2012 PM2.5 attainment plan
                                                  determines that controls are not needed                 submissions are set forth in subpart 4,                contains SIP provisions to address the
                                                  for any sources of that precursor (not                  but such SIP submissions must also                     requirements for a Moderate PM2.5
                                                  just major sources) for attainment                      meet the general attainment planning                   nonattainment area, including RACT/
                                                  purposes. EPA has long recognized the                   provisions in subpart 1, to the extent                 RACM, emissions inventory, modeling,
                                                  scientific basis for concluding that there              these provisions ‘‘are not otherwise                   attainment demonstration,
                                                  are multiple precursors to PM10, and in                 subsumed by, or integrally related to,’’               transportation conformity and motor
                                                  particular to PM2.5 (Section III of                     the more specific subpart 4                            vehicle emissions budgets, RFP with
                                                  Preamble of PM2.5 SIP Requirements                      requirements (57 FR 13538).                            quantitative milestones, and
                                                  Rule).                                                  Additionally, EPA finalized the PM2.5                  contingency measures. EPA is proposing
                                                     After Ohio’s submission of the                       SIP Requirements Rule to clarify our                   to approve the RACM, emissions
                                                  attainment plan by the CAA required                     interpretations of the statutory                       inventory, attainment demonstration,
                                                  date of October 14, 2016, EPA released                  requirements that apply to Moderate                    and precursor demonstrations for NNSR
                                                  a November 17, 2016 memorandum                          and ‘‘Serious’’ PM2.5 nonattainment                    and attainment planning purposes, as
                                                  from Steve Page entitled ‘‘Draft PM2.5                  areas under subparts 1 and 4.                          fully meeting the requirements of the
                                                  Precursor Demonstration Guidance’’                                                                             CAA and the applicable Federal
                                                                                                             The CAA requirements of subpart 1
                                                  (precursor guidance), which provides                                                                           regulations. Preliminary monitoring
                                                                                                          for attainment plans include: (i) The
                                                  guidance to states on methods to                                                                               data indicate that the area is attaining
                                                                                                          section 172(c)(1) RACM/reasonably
                                                  evaluate if sources of a particular                                                                            the standard for the 2015–2017 design
                                                                                                          available control technology (RACT)
                                                  precursor contribute significantly to                                                                          value period. If confirmed, certain
                                                                                                          and attainment demonstrations; (ii) the
                                                  PM2.5 levels in the nonattainment area.                                                                        planning requirements may be
                                                                                                          section 172(c)(2) requirement to
                                                  The precursor guidance provides a                                                                              suspended per the clean data policy (40
                                                                                                          demonstrate RFP; (iii) the section
                                                  detailed description of potential                                                                              CFR 51.1015(a)). EPA will continue to
                                                                                                          172(c)(3) requirement for emission
                                                  modeling approaches and presents                                                                               review other elements of the attainment
                                                                                                          inventories; (iv) the section 172(c)(5)
                                                  possible thresholds to use in                                                                                  plan submission in order to determine
                                                                                                          requirements for a NNSR permitting
                                                  determining whether sources of a                                                                               if they are necessary for the area to
                                                                                                          program; and (v) the section 172(c)(9)
                                                  particular precursor contribute                                                                                attain the standard and act on them
                                                                                                          requirement for contingency measures.
                                                  significantly to PM2.5 levels in the area.                                                                     accordingly.
                                                  Although there is no explicit                              The CAA subpart 4 requirements for
                                                                                                          Moderate areas are generally                           Emissions Inventory 1
                                                  concentration which EPA has
                                                  determined represents a significant                     comparable with the subpart 1                             Section 172(c)(3) of the CAA requires
                                                  contribution for PM2.5 precursor                        requirements and include: (i) The                      the development of an emissions
                                                  demonstrations, the precursor guidance                  section 189(a)(1)(A) NNSR permit                       inventory for nonattainment areas. In
                                                  suggests that a contribution level of 0.2               program requirements; (ii) the section                 addition, the planning and associated
                                                  mg/m3, for annual average PM2.5, could                  189(a)(1)(B) requirements for attainment               modeling requirements set forth in CAA
                                                  be considered an air quality change that                demonstration; (iii) the section                       section 189(a) make the development of
                                                  is ‘‘insignificant.’’ The specific methods              189(a)(1)(C) requirements for RACM;                    an accurate and up-to-date emissions
                                                  and analysis utilized by Ohio regarding                 and (iv) the section 189(c) requirements               inventory a critical element of any
                                                  precursors are generally consistent with                for RFP and quantitative milestones.                   viable attainment plan. EPA guidance
                                                  the PM2.5 SIP Requirements Rule and                     Section 189(e) also requires that states               specifies the best practices for
                                                  precursor guidance and are described in                 regulate major sources of PM2.5                        developing an emissions inventory for
                                                  detail in the sections below regarding                  precursors in a nonattainment area,                    PM2.5 nonattainment areas per EPA’s
                                                                                                          unless EPA approves a demonstration                    ‘‘Emissions Inventory Guidance for
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                                                  planning requirements and NNSR
                                                  requirements.                                           excusing the state from regulating such                Implementation of Ozone and
                                                                                                          sources. In addition, under subpart 4                  Particulate Matter National Ambient Air
                                                  B. CAA PM2.5 Moderate Area                              Moderate areas must provide for
                                                  Nonattainment SIP Requirements                          attainment of the current PM2.5 annual                   1 Note that this guidance was also updated in

                                                    With respect to the requirements for                  standard as expeditiously as practicable               2017. See ‘‘Emissions Inventory Guidance for
                                                                                                                                                                 Implementation of Ozone and Particulate Matter
                                                  an attainment plan for the 2012 PM2.5                   but no later than the end of the 6th                   National Ambient Air Quality Standards (NAAQS)
                                                  NAAQS, the general CAA part D                           calendar year after designation, which is              and Regional Haze Regulations’’ (EPA–454/B–17–
                                                  nonattainment area planning                             December 31, 2021.                                     003, July 2017).



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                                                  25610                            Federal Register / Vol. 83, No. 107 / Monday, June 4, 2018 / Proposed Rules

                                                  Quality Standards (NAAQS) and                                        OEPA and LADCO determined that                          nonattainment area for direct PM2.5 and
                                                  Regional Haze Regulations’’ (EPA–454/                                high-quality emissions information was                  all PM2.5 precursors.
                                                  B–07–002, April 2007). The 2012 PM2.5                                already available from the National                        OEPA’s submission included detailed
                                                  NAAQS SIP submission contains                                        Emissions Inventory (NEI) for 2011.                     information for the sources in the
                                                  planning inventories of emission                                     LADCO developed the base year
                                                                                                                                                                               emissions inventory including facility
                                                  sources and emission rates for the base                              emissions inventory for the
                                                                                                                                                                               name, ID, location, and emissions, as
                                                  year of 2011 and the projected                                       nonattainment area using the NEI, with
                                                  attainment year of 2021. OEPA selected                               additional information for on-road and                  well as documentation on mobile source
                                                  the year 2011 as the base year because                               nonroad mobile sources, marine,                         model inputs for both on-road and
                                                  it is one of the three years for which air                           aircraft, and rail sources. Table 1                     nonroad sources (See Docket submission
                                                  quality data was used to designate the                               provides a summary of the annual 2011                   and Appendix C).
                                                  area as nonattainment. Additionally,                                 emissions inventory for the Cleveland

                                                                TABLE 1—ANNUAL EMISSIONS INVENTORY FOR CLEVELAND AREA FOR DIRECT PM2.5 AND PRECURSORS
                                                                                                                                                [tpy]

                                                                                                                                  PM2.5
                                                               County/source sector                                                                              NOX             SO2            NH3            VOC
                                                                                                                     Filterable       Condensable

                                                  Cuyahoga:
                                                      Area (nonpoint) .................................                  1143.13               234.61             4989.24           188.94        670.62       12116.58
                                                      Marine, Aircraft, Rail (MAR) .............                           96.88                 0.02             2822.27           187.78          0.99         288.66
                                                      Nonroad ............................................                508.69                 0.00             6045.40            17.35          8.66        8349.38
                                                      Onroad ..............................................               800.00                 0.00            18764.59           132.17        428.60        8568.15
                                                      Point EGU .........................................                  32.90                33.50              771.22          1941.86          0.10          11.40
                                                      Point Non-EGU .................................                     599.48               407.26             2404.05          4461.80         65.87         986.52
                                                      Prescribed Fire .................................                     4.92                 0.00                1.20             0.54          0.88          12.61
                                                  Lorain:
                                                      Area (nonpoint) .................................                      477.68             72.00              844.19           44.37         448.73        2721.24
                                                      Marine, Aircraft, Rail (MAR) .............                              44.39              0.00             1289.44           55.68           0.57          73.94
                                                      Nonroad ............................................                   160.82              0.00             1971.11            5.39           2.66        3009.78
                                                      Onroad ..............................................                  195.49              0.00             4580.85           31.75         101.84        2177.01
                                                      Point EGU .........................................                     94.90            298.62             4673.50        32041.30           0.54          31.82
                                                      Point Non-EGU .................................                        156.45            175.78              705.89          374.63           3.01         916.35
                                                      Prescribed Fire .................................                        0.00              0.00                0.00            0.00           0.00           0.00

                                                              Total ...........................................          4615.72             1521.80             49862.95        39483.56        1736.07       39263.44



                                                    EPA has reviewed the base-year                                     modeling in accordance with EPA’s                       description of the problem to be
                                                  emissions inventory and finds that it                                April 2007 (and where appropriate,                      addressed; developing a modeling/
                                                  satisfies the CAA section 172(c)(3)                                  draft December 2014) ‘‘Guidance on the                  analysis protocol; selecting an
                                                  requirement for a comprehensive,                                     Use of Models and Other Analyses for                    appropriate model to support the
                                                  accurate and current inventory of actual                             Demonstrating Attainment of Air                         demonstration; selecting appropriate
                                                  2011 emissions of the relevant                                       Quality Goals for Ozone, PM2.5, and                     meteorological episodes or time periods
                                                  pollutants for PM2.5 in the Cleveland                                Regional Haze.’’ (attainment                            to model; choosing an appropriate area
                                                  area. Thus, EPA proposes to approve the                              demonstration modeling guidance)                        to model with appropriate horizontal/
                                                  base year emissions inventory in the SIP                             (EPA–454/B–07–002, April 2007). OEPA                    vertical resolution; generating
                                                  submission.                                                          modeling is also consistent with the                    meteorological and air quality inputs to
                                                  Attainment Demonstration and                                         November 2005 Appendix W                                the air quality model; generating
                                                  Modeling                                                             requirement used at the time by OEPA                    emissions inputs to the air quality
                                                                                                                       and is still consistent with the updated                model; and, evaluating performance of
                                                     Section 189(a)(1)(B) requires that a                              January 2017 (82 FR 5182) ‘‘Guideline                   the air quality model. After these steps
                                                  PM2.5 Moderate area SIP contain either                               on Air Quality Models.’’ (CFR Title 40,                 are completed, the state can apply a
                                                  a demonstration that the plan will
                                                                                                                       Part 51, Appendix W.) In addition,                      model to simulate effects of future year
                                                  provide for attainment by the applicable
                                                                                                                       OEPA submitted a precursor                              emissions and candidate control
                                                  attainment date, or a demonstration that
                                                                                                                       demonstration that is consistent with                   strategies.
                                                  attainment by such date is
                                                                                                                       the recommendations contained in                           OEPA and LADCO calculated the
                                                  impracticable. In the attainment
                                                  demonstration of the 2016 SIP                                        EPA’s precursor guidance document                       baseline design value for PM2.5 using the
                                                  submission, OEPA described how the                                   released in November 2016. (‘‘PM2.5                     procedures contained in appendix N to
                                                  attainment plan would provide for                                    Precursor Demonstration Guidance,’’                     40 CFR 50, ‘‘Interpretation of the
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                                                  attainment of the 2012 PM2.5 NAAQS by                                memorandum issued by Steven Page,                       National Ambient Air Quality Standards
                                                  the attainment date of December 31,                                  Director of EPA Office of Air Quality                   for Particulate Matter,’’ and EPA
                                                  2021.                                                                Planning and Standards, November 17,                    attainment demonstration modeling
                                                     Using air quality modeling, an                                    2016).                                                  guidance. Ambient PM2.5 concentrations
                                                  attainment demonstration must project                                  Per the PM2.5 SIP Requirements Rule,                  for the 2009–2013 time frame (a
                                                  that future air quality levels in the                                the attainment demonstration modeling                   weighted average of the 2009–2011,
                                                  nonattainment area will be below the                                 guidance provides recommendations                       2010–2012, and 2011–2013 design value
                                                  standard. OEPA and LADCO conducted                                   that include: Developing a conceptual                   periods, as recommended by the


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                                                                                      Federal Register / Vol. 83, No. 107 / Monday, June 4, 2018 / Proposed Rules                                                                           25611

                                                  Modeling Guidance) were used to                                             The future-year scenarios incorporate                                     have been promulgated, with no new
                                                  calculate baseline design values ranging                                    current ‘‘on-the-books’’ regulations, and                                 future controls being added since OEPA
                                                  from 9.64–12.82 mg/m3 for the seven                                         do not include any additional measures                                    has determined that additional RACT
                                                  PM2.5 monitoring locations in the                                           or controls. See, EPA (2015A) for a                                       and RACM would not be necessary for
                                                  nonattainment area (see Table 2).                                           thorough description of the                                               expeditious attainment, and that current
                                                  Detailed methods for the baseline design                                    methodology used to project future                                        controls in the area are sufficient to
                                                  value calculations are in Appendix B of                                     emissions. For most emissions                                             meet the RACM requirement. For
                                                  the 2016 SIP submission (See Docket).                                       categories, LADCO developed the 2021                                      modeling purposes no additional
                                                     Next, OEPA and LADCO compiled                                            future-year emissions inventory by                                        RACM/RACT was applied to future year
                                                  base-year emission inventories (as                                          interpolating between EPA’s 2017 and                                      inventories.
                                                  discussed above) and projected                                              2025 inventories. The interpolation was                                      The base-year and projected emission
                                                  emission inventories for the attainment                                     done for each model species at each                                       inventories were used in a
                                                  year 2021. LADCO utilized emission                                          model cell for every model hour.                                          photochemical grid model, the
                                                  inventories compiled by EPA for the                                         However, LADCO developed updated                                          Comprehensive Air Quality Model with
                                                  years 2011, 2017, and 2025 as the                                           2021 EGU emissions by using the                                           extensions (CAMx), to project the
                                                  starting point. EPA’s 2011 emissions                                        Eastern Regional Technical Advisory                                       expected change from base-year to
                                                  inventory (Version 2011eh) is based on                                      Committee EGU Tool (ERTAC) and                                            future year design values. The modeled
                                                  the 2011 NEI, version 2 (2011NEIv2).                                        updated 2021 regional on-road mobile                                      attainment demonstration results in a
                                                  The inventory uses hourly 2011                                              emissions using EPA’s Motor Vehicle                                       predicted future-year concentration at
                                                  continuous emissions monitoring                                             Emission Simulator (MOVES2014) and                                        each PM2.5 ambient monitor location
                                                  system (CEMS) data for electric                                             Ramboll-Environ emissions (See                                            within the Cleveland nonattainment
                                                  generating units (EGUs) emissions,                                          Appendix B and C for detailed                                             area. The results from the CAMx
                                                  hourly on-road mobile emissions, and                                        discussion).                                                              modeling were then used as inputs to
                                                  2011 day-specific wild and prescribed                                         For EGU projections, Ohio and                                           EPA’s Modeled Attainment Test
                                                  fire data. Emissions include all criteria                                   LADCO relied on the U.S. Energy                                           Software (MATS) to calculate the design
                                                  pollutants and precursors (CAPs), and a                                     Information Administration’s ‘‘High Oil                                   values for each monitored location in
                                                  few hazardous air pollutants (HAPs).                                        and Gas Resource’’ (See Docket for                                        the attainment year 2021 using
                                                  See EPA’s Technical Support Document                                        detailed discussion). The projected                                       information on current PM2.5 speciation.
                                                  (EPA, 2015A) for a thorough description                                     emissions inventory not only accounts                                     Modeled attainment year results show
                                                  of the methodology used to develop the                                      for growth in economic sectors, but also                                  that the area is expected to meet the
                                                  2011 emissions inventory.                                                   includes emissions controls (existing or                                  standard (all 2021 values at existing
                                                     EPA projected future emission                                            future regulations) that will impact                                      monitor locations are below 12.0 mg/m3)
                                                  inventories for the years 2017 and 2025                                     sources in the area. In this case, OEPA                                   by the 2021 attainment date (See Table
                                                  based on the 2011 baseline inventory.                                       and LADCO only modeled controls that                                      2).

                                                                                                      TABLE 2—PROJECTED PM2.5 DESIGN VALUES (μg/m3) FOR 2021
                                                                                                                                                                                                                                          2021
                                                                                                                                                                                                                       2011 Baseline
                                                                                                                     County                                                                            Monitor ID                       Projected
                                                                                                                                                                                                                        design value   design value

                                                  Cuyahoga .....................................................................................................................................       39–035–0034             10.02           8.07
                                                                                                                                                                                                       39–035–0038             12.82          10.69
                                                                                                                                                                                                       39–035–0045             11.99           9.84
                                                                                                                                                                                                       39–035–0060             12.79          10.45
                                                                                                                                                                                                       39–035–0065             12.49          10.32
                                                                                                                                                                                                       39–035–1002             10.36           8.41
                                                  Lorain ...........................................................................................................................................   39–093–3002              9.64           8.08



                                                     Based on the above, EPA is proposing                                     necessary for attainment, as well as                                      longstanding guidance in the General
                                                  to approve OEPA’s demonstration of                                          expeditious attainment, in a given area.                                  Preamble provides recommendations for
                                                  attainment for 2021 as meeting the                                             Subpart 4 also requires states to                                      determining which control measures
                                                  statutory requirement in CAA                                                develop attainment plans that evaluate                                    constitute RACM and RACT for
                                                  189(a)(1)(B).                                                               potential control measures and impose                                     purposes of meeting the statutory
                                                                                                                              RACM and RACT on sources within a                                         requirements of subpart 4 (57 FR 13540–
                                                  RACM/RACT Requirements                                                                                                                                13541).
                                                                                                                              Moderate nonattainment area that are
                                                     The general SIP planning                                                 necessary to expeditiously attain the                                        For both RACM and RACT, EPA notes
                                                  requirements for nonattainment areas                                        NAAQS. Specifically, CAA section                                          that an overarching principle is that if
                                                  under subpart 1 include CAA section                                         189(a)(1)(C) requires that Moderate                                       a given control measure is not needed
                                                  172(c)(1), which requires                                                   nonattainment plans provide for                                           to attain the relevant NAAQS in a given
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                                                  implementation of all RACM (including                                       implementation of RACM and RACT no                                        area as expeditiously as practicable,
                                                  RACT). Section 172(c)(1) requires that                                      later than four years after the area is                                   then that control measure would not be
                                                  attainment plans provide for the                                            designated as nonattainment. As with                                      required as RACM or RACT because it
                                                  implementation of RACM (including                                           subpart 1, the terms RACM and RACT                                        would not be reasonable to impose
                                                  RACT) to provide for attainment of the                                      are not defined within subpart 4. Nor do                                  controls that are not in fact needed for
                                                  NAAQS. Therefore, what constitutes                                          the provisions of subpart 4 specify how                                   attainment purposes. Accordingly, a
                                                  RACM and RACT is related to what is                                         states are to meet the RACM and RACT                                      RACM and RACT analysis is a process
                                                                                                                              requirements. However, EPA’s                                              to identify emission sources, evaluate


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                                                  25612                     Federal Register / Vol. 83, No. 107 / Monday, June 4, 2018 / Proposed Rules

                                                  potential emission controls, and impose                 significant PM2.5 precursors for                       Although there is no explicit
                                                  those control measures and technologies                 attainment planning purposes.                          concentration which EPA has
                                                  that are reasonable and necessary to                                                                           determined represents a significant
                                                                                                          Precursor Demonstration for Attainment
                                                  bring the area into attainment as                                                                              contribution, the current draft precursor
                                                                                                          Planning Purposes
                                                  expeditiously as practicable, but by no                                                                        guidance suggests that a contribution
                                                  later than the statutory attainment date                   For the precursor demonstration,                    level of 0.2 mg/m3 is an appropriate
                                                  for the area.                                           OEPA and LADCO initially performed a                   recommended threshold to identify an
                                                     EPA has long applied a policy that                   ‘‘concentration-based’’ contribution                   air quality change that is ‘‘insignificant’’
                                                  states must evaluate the combined effect                analysis using speciated monitoring                    for annual average PM2.5. In this case, all
                                                  of reasonably available control measures                data to determine whether NH3 or VOC                   modeled impacts for VOC emissions are
                                                  that, if implemented collectively, would                contribute significantly to PM2.5                      well below the recommended threshold,
                                                  advance the attainment date by at least                 concentrations in the area, based on                   and most of the modeled NH3 impacts
                                                  one year and should be adopted. Since                   monitored values alone. However, using                 are at or below the threshold as well,
                                                  the area’s preliminary data indicate that               the assumption suggested in the draft                  with only one ambient air quality
                                                  it will attain the NAAQs based on the                   precursor demonstration guidance that                  monitor showing modeled ambient
                                                  2015–2017 design value period, it is not                all NH3 emissions are associated with                  PM2.5 levels slightly above the
                                                  necessary to implement additional                       the nitrate portion of PM2.5 mass, and                 recommended threshold (at 0.21 mg/m3).
                                                  controls. The data indicates that the area              that all VOC emissions are associated                     EPA’s precursor guidance noted that
                                                  is attaining the standard with current                  with the organic carbon portion of PM2.5               there may be cases where precursor
                                                  Federal, state, and local permanent and                 mass, the state could not determine that               emissions have an impact above the
                                                  enforceable measures.                                   these precursors did not make a                        recommended contribution thresholds,
                                                     OEPA provided a RACM and RACT                        significant contribution.                              yet do not ‘‘significantly contribute’’ to
                                                  analysis in Appendix E of the 2012                         Therefore, the state proceeded with a               levels that exceed the standard in the
                                                  PM2.5 attainment plan SIP submission.                   sensitivity analysis to determine the                  area (pursuant to section 189(e)). Under
                                                  Ohio has found that existing measures                   impact of reducing NH3 and VOC                         the PM2.5 SIP Requirements Rule, the
                                                  for PM2.5, SO2 and NOX for area sources,                emissions on PM2.5 concentrations in                   significance of a precursor’s
                                                  mobile sources and stationary sources                   the nonattainment area. OEPA and                       contribution is to be determined ‘‘based
                                                  constitute RACT/RACM (80 FR 68253;                      LADCO performed a modeled                              on the facts and circumstances of the
                                                  81 FR 58402; 82 FR 16938). Some of the                  sensitivity analysis for attainment                    area.’’ Air agencies may thus provide
                                                  current controls for the area that are                  planning purposes using the 2021                       EPA with information related to other
                                                  sufficient to meet the RACM/RACT                        attainment year concentrations at each                 factors they believe should be
                                                  requirement include: Existing PM2.5 and                 monitor in the Cleveland area. LADCO                   considered in determining whether the
                                                  ozone RACT rules, mobile source                         applied a 40% emission reduction to                    contribution of emissions of a particular
                                                  controls, SO2 reductions from 2010 SO2                  anthropogenic sources of NH3 and VOC                   precursor to levels that exceed the
                                                  nonattainment areas including a large                   emissions for all source categories in the             NAAQS is ‘‘significant’’ or not. Such
                                                  EGU in neighboring Lake County,                         Cleveland nonattainment area. The                      factors may include: The amount by
                                                  Federal interstate transport rules, and                 OEPA submission indicated that the                     which a precursor’s contribution
                                                  regional haze.                                          40% comprehensive reduction was                        exceeds the recommended contribution
                                                     OEPA provided an attainment                          chosen because it was within the range                 thresholds; the severity of
                                                  analysis that consisted of: First, a                    of a previously published,                             nonattainment at relevant monitors and/
                                                  modeling demonstration that the area                    comprehensive sensitivity analysis done                or grid cell locations in the area; trends
                                                  would attain by the attainment date in                  in photochemical modeling which                        in ambient speciation data and
                                                  2021 with current on-the-books controls                 typically uses 30–50% when applying                    precursor emissions; and any other
                                                  and measures; and second, a                             the reduction across all emission                      relevant information.
                                                  demonstration showing that by                           sectors—as done for this analysis.2                       Based on a number of factors, in this
                                                  interpolating modeled future values                        The submission was made by the state                case EPA believes that NH3 is not a
                                                  from 2021 with 2016 design values at                    prior to the date that the precursor                   significant precursor. The relevant
                                                  the monitored sites, the area would be                  guidance was issued by EPA; however,                   factors include: The magnitude of the
                                                  attaining the standard in both 2020 (at                 the modeled reduction levels are still                 amount above the threshold is small
                                                  11.0 mg/m3) and 2019 (at 11.3 mg/m3) at                 within the suggested range of 30–70%                   compared to the total threshold amount
                                                  the design value monitor prior to the                   reductions found in the precursor                      (5% of the total threshold amount); the
                                                  2021 statutory attainment date. The                     guidance.                                              area continues to trend downward in
                                                  interpolation suggested that the area                      The results of the 2021 attainment                  both ambient monitoring data and
                                                  would attain at the end of 2017, similar                planning sensitivity analyses show                     emissions in direct PM2.5 and
                                                  to EPA modeling analysis discussed                      modeled impacts from reducing NH3 by                   precursors; current preliminary
                                                  below, and is now verified by the                       40% on PM2.5 concentrations at the                     monitoring data shows the area is
                                                  preliminary 2015–2017 design values                     monitors ranging from 0.10–0.21 mg/m3,                 attaining the standard; and additionally,
                                                  that indicate the area is likely attaining              and modeled impacts from reducing                      this small amount of PM2.5 resulting
                                                  as of the end of 2017. In addition, the                 VOC ranging from 0.0–0.01 mg/m3.                       from NH3 would not interfere with the
                                                  PM2.5 SIP Requirements Rule outlines                                                                           area’s ability to attain the standard, as
                                                  the option for states to do an additional                  2 EPA examined examples in the published
                                                                                                                                                                 evidenced by the fact that the
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                                                  modeling demonstration to show that                     literature of general sensitivity modeling studies     preliminary 2015–2017 design value is
                                                                                                          that look at the impact of across-the-board
                                                  specific PM2.5 precursors are not                       percentage reductions in precursor emissions on
                                                                                                                                                                 0.7 mg/m3 below the NAAQS. Regardless
                                                  significant contributors to PM2.5 levels                secondary pollutants (including PM2.5, PM10, and       of the finding of significance for these
                                                  that exceed the standard in the area.                   ozone) (Vieno, 2016; Megaritis, 2013; Harrison,        precursors, the area is expected to attain
                                                  OEPA provided a precursor                               2013; Derwent, 2014; Liu, 2010; Pun, 2001). The        (based on preliminary design values)
                                                                                                          majority of studies have used across the board
                                                  demonstration modeling analysis that                    percentage precursor emissions reductions of
                                                                                                                                                                 with only current controls in place, and
                                                  was intended to demonstrate that                        between 30% and 60%, with the most common              it would not be required to control any
                                                  emissions of NH3 and VOC are not                        reduction percentages being 30% and 50%.               sources further. Additionally, the area


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                                                                            Federal Register / Vol. 83, No. 107 / Monday, June 4, 2018 / Proposed Rules                                             25613

                                                  has preliminary 2015–2017 data                          in the area and the cost of emissions                     EPA finds OEPA’s determination
                                                  indicating that it has a three-year design              reduction measures that have been                      reasonable, and is proposing to approve
                                                  value below the level of the NAAQS, so                  implemented at similar sources in the                  OEPA’s determination that current
                                                  that any additional controls would not                  same or other areas.                                   controls meet the RACM/RACT
                                                  be implemented until well after the area                   OEPA determined that the                            requirement and that additional controls
                                                  has attained the standard.                              technologically feasible measures that                 are not reasonable for other sources in
                                                     Based on the above, EPA agrees with                  were identified were not economically                  the area or necessary to expeditiously
                                                  the determination by Ohio that for                      feasible. For example, the state                       attain the NAAQS.
                                                  attainment planning purposes,                           determined that the cost-effectiveness                    As noted above, the attainment
                                                  additional controls on existing sources                 ranged from $5800 per ton to more than                 demonstration modeling analysis
                                                  of NH3 and VOC emissions do not need                    $40,000 per ton for measures that were                 reflecting 2021 projected emissions
                                                  to be imposed.                                          found to be technologically feasible for               based on only current controls shows
                                                                                                          major stationary sources. In addition,                 that projected 2021 air quality values at
                                                  RACM/RACT Analysis
                                                                                                          the highest costs of reductions were                   monitoring sites in the area range from
                                                     OEPA conducted a six-step RACM                       generally linked to controls of direct                 8.07–10.69 mg/m3, well below the
                                                  analysis that focused on direct PM2.5,                                                                         standard. Monitoring data for the 2014–
                                                                                                          PM2.5, and OEPA has determined that
                                                  NOX, and SO2: (1) Identify sources in                                                                          2016 design values show only one
                                                                                                          reductions in direct PM2.5 would be the
                                                  the area for PM2.5, NOX, and SO2—that                                                                          monitor in the area is above the
                                                                                                          most effective at reducing the monitored
                                                  comprised over 90% of the emissions                                                                            standard at 12.2 mg/m3, and is trending
                                                                                                          concentrations in the Cleveland area.
                                                  for each pollutant over all source                                                                             downward. Interpolation between
                                                                                                          Thus, the state found that the most
                                                  categories; (2) identify potential control                                                                     current and projected monitor values
                                                                                                          effective controls are not reasonable to
                                                  measures; (3) evaluate technological                                                                           indicates that the area is likely to attain
                                                                                                          implement based on cost.
                                                  feasibility; (4) evaluate economic                                                                             the standard with current controls by
                                                  feasibility; (5) determine if the measures                 Finally, OEPA analyzed the
                                                                                                          implementation time frame of controls                  the end of the 2017 calendar year.
                                                  can be implemented within both four                                                                            Current, preliminary monitored design
                                                  and five years; (6) evaluate the earliest               within four years and the earliest
                                                                                                                                                                 values for the years 2015–2017 shows
                                                  practical year for attainment.                          applicable attainment date, which by
                                                                                                                                                                 the highest values being monitored in
                                                     As detailed in OEPA’s RACT/RACM                      interpolation would be the end of 2017,
                                                                                                                                                                 the Cleveland area is 11.3 mg/m3. EPA
                                                  analysis in Appendix E, many of the                     and determined that the area would
                                                                                                                                                                 also conducted modeling in 2015 in
                                                  sources are already well controlled. The                attain the standard prior to the state
                                                                                                                                                                 support of regulatory initiatives
                                                  state then identified current controls for              rulemaking and implementation of
                                                                                                                                                                 regarding the revised ozone NAAQS and
                                                  each source as well as any additional                   additional controls in the area. In fact,
                                                                                                                                                                 interstate transport (Appendix B), and
                                                  measures or controls that are potentially               the area has preliminary 2015–2017 data
                                                                                                                                                                 these analyses also indicate that the
                                                  available to each of the identified                     indicating that it has a three-year design
                                                                                                                                                                 Cleveland area will attain the PM2.5
                                                  sources using EPA’s ‘‘Menu of Control                   value below the level of the NAAQS,
                                                                                                                                                                 NAAQS well before the outermost
                                                  Measures’’ document, available online                   making implementation of additional                    attainment date of December 31, 2021.
                                                  at http://www.epa.gov/air/criteria.html                 controls to achieve attainment moot.                      Based on the above, EPA is proposing
                                                  and the RACT/BACT/LAER                                     As noted by OEPA, both the Federal                  to find that current controls on sources
                                                  Clearinghouse (RBLC) at http://                         and state ‘‘on the books’’ controls have               in the nonattainment area meet the
                                                  cfpub.epa.gov/rblc/. OEPA then                          led to additional control and will lead                requirements of section 172(c)(1) and
                                                  determined if any of the identified                     to additional emissions reductions in                  section 189(a)(1)(C) of the CAA.
                                                  controls were technologically or                        the future. Because of the historic                    Accordingly, EPA is proposing to
                                                  economically feasible using EPA’s the                   nonattainment status of this area for                  approve current controls: Federal
                                                  method outlined in the PM2.5 SIP                        both ozone and PM2.5, the Cleveland                    mobile source standards, transport
                                                  Requirements Rule, which can include                    nonattainment area is one of the most                  rules, Regional Haze plans, and state
                                                  factors such as a source’s process and                  well controlled areas in the state for                 VOC RACT rules as meeting the RACM/
                                                  operating procedures, raw materials,                    pollutants contributing to formation of                RACT provisions.
                                                  physical plant layout, and potential                    both PM2.5 and ozone. Ohio’s current
                                                                                                          rules, current controls and the Federal                Nonattainment NSR Precursor
                                                  environmental impacts such as
                                                                                                          ‘‘on the books’’ controls continue to                  Demonstration
                                                  increased water pollution, waste
                                                  disposal and energy requirements (see                   satisfy RACT/RACM for the annual                          In addition to the attainment planning
                                                  40 CFR 51.1009(a)(3)(i)).                               PM2.5 standard. Some of the current                    precursor demonstrations, which
                                                     In regard to area and mobile sources,                controls that are sufficient to meet the               showed that neither existing sources of
                                                  a state may tailor the analysis to the                  RACT/RACM requirement are Ohio’s                       VOC nor existing sources of NH3 have
                                                  considerations that are relevant to the                 current RACT program found in Ohio                     a significant contribution to PM2.5
                                                  local circumstances, such as the                        Administrative Code (OAC) Chapter                      concentrations, OEPA provided an
                                                  condition and extent of needed                          3745–17, which controls NOX; rules                     analysis for both VOC and NH3 intended
                                                  infrastructure, population size, and                    under OAC Chapter 3745–18 which                        to show that increases in emissions of
                                                  workforce type and habits, all of which                 control SO2 sources for the state; and                 these precursors that may result from
                                                  may impact the availability of potential                the inspection and maintenance                         new or modified sources would not
                                                  control measures in the area. (81 FR                    program contained in OAC Chapter                       make a significant contribution to PM2.5
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                                                  58010)                                                  3745–26, which reduces emissions of                    concentrations in the area. This
                                                     OEPA also determined economic                        NOX and VOC from on-road vehicles.                     demonstration is intended to justify the
                                                  feasibility of each identified measure or               OEPA has determined that no additional                 state’s determination that major
                                                  technology. That analysis included                      controls are feasible to implement as                  stationary sources of these precursors do
                                                  consideration of the cost of reducing                   RACM/RACT in the Cleveland area, and                   not need to be regulated under the
                                                  emissions in the area and the difference                that current controls meet the                         NNSR program for the area. For NNSR
                                                  between the cost of an emissions                        requirement for RACM under 172(c)(1)                   permitting purposes, CAA section
                                                  reduction measure at a particular source                and 189(a)(1)(C).                                      189(e), as interpreted by the PM2.5 SIP


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                                                  25614                     Federal Register / Vol. 83, No. 107 / Monday, June 4, 2018 / Proposed Rules

                                                  Requirements Rule, provides an option                   nonattainment area (including                          increase in NH3 from stationary sources.
                                                  for the state to provide a precursor                    unmonitored areas) resulting from a                    The additional NH3 analysis (scenario 2)
                                                  demonstration intended to show that                     given set of hypothetical NH3 or VOC                   had a total emissions increase of 1,700
                                                  increases in emissions from potential                   precursor emission increases from                      tpy, which is over 500% higher growth
                                                  new and existing major stationary                       modified major stationary sources of the               than the historical NH3 growth (scenario
                                                  sources of a particular precursor would                 respective precursors in the                           1).
                                                  not contribute significantly to levels that             nonattainment area. The inventories and                   Ohio found the addition of the NH3
                                                  exceed the 2012 PM2.5 NAAQS in a                        the full detailed analysis are contained               emissions (approximately 350 tpy) into
                                                  particular nonattainment area. 40 CFR                   in Appendix F of Ohio’s submission.                    the model based on historical growth
                                                  51.1006(a)(3). In particular, EPA’s                     For the NH3 analysis, Ohio assumed                     (scenario 1) would result in a peak
                                                  regulations provide that a state choosing               emissions increases at three existing                  impact of 0.08 mg/m3, and the addition
                                                  to submit an NNSR precursor                             locations of NH3 in the area, as these                 of the above VOC emissions would
                                                  demonstration should evaluate the                       would be the most likely future areas of               result in a peak impact of 0.02 mg/m3.
                                                  sensitivity of PM2.5 levels in the                      growth in the Cleveland area. EPA                      The modeled impacts are well below the
                                                  nonattainment area to an increase in                    believes that the use of the historical                recommended significance contribution
                                                  emissions of the precursor. If the state                inventories to predict growth is                       threshold of 0.2 mg/m3; for VOC it is an
                                                  demonstrates that the estimated air                     reflective of the future potential                     order of magnitude difference, and for
                                                  quality changes determined through                      increases specific to the Cleveland area               NH3 the maximum value is less than
                                                  such an analysis are not significant,                   given the current types of facilities and              half the recommended significant
                                                  based on the facts and circumstances of                 their respective locations, the urban                  contribution threshold level. The results
                                                  the area, the state may use this                        density and ability to expand or build,                of NH3 modeling for scenario 2 indicate
                                                  information to identify new major                       as well as the types of state regulation               that, even with a conservatively large
                                                  stationary sources and major                            or other Federal requirements (such as                 NH3 increase, the maximum impact was
                                                  modifications of a precursor that will                  National Emission Standards for                        0.24 mg/m3, which is only slightly above
                                                  not be considered to contribute                         Hazardous Air Pollutants) on facility                  the recommended contribution
                                                  significantly to PM2.5 levels that exceed               types and controls required for other                  threshold of 0.2 mg/m3.
                                                  the standard in the nonattainment area                  pollutants. EPA believes that this is an                  While the increase is slightly above
                                                  under CAA section 189(e). Id.                           acceptable approach to estimating                      the recommended contribution
                                                  51.1006(a)(3)(i). If EPA approves the                   potential future growth.                               threshold, EPA believes that it is
                                                  state’s NNSR precursor demonstration                      In addition to the modeled emissions                 reasonable to conclude that NH3
                                                  for a nonattainment area, major sources                 increases based on historical growth at                emissions from major stationary sources
                                                  of the relevant precursor can be                        sources, LADCO and OEPA did an                         (in the context of a NNSR precursor
                                                  exempted from the NNSR major source                     additional NH3 modeling analysis                       demonstration) do not contribute
                                                  permitting requirements for PM2.5 with                  (submitted July 18, 2017) based on a 100               significantly to PM2.5 concentrations in
                                                  respect to that precursor. Id.                          tpy emissions increase (to represent                   the nonattainment area for the following
                                                  51.1006(a)(3)(ii).                                      major sources) in each modeled grid cell               reasons: Historical growth of NH3
                                                     For NNSR permitting purposes,                        in the nonattainment area. EPA believes                sources in the area are significantly less
                                                  sensitivity analyses examine potential                  that this is a sufficiently conservative               than what was modeled for scenario 2;
                                                  increases in emissions through a model                  analysis that exceeds the level of actual              the only likely future increases of NH3
                                                  simulation that evaluates the effect on                 potential NH3 emissions growth likely                  emissions from major sources in the
                                                  PM2.5 concentrations in the area                        to occur in the area. Both of these                    area are from the increased use of NH3
                                                  resulting from a given set of precursor                 approaches are consistent with                         for EGU NOX control (ammonia slip)
                                                  emission increases from one or more                     suggested modeling in EPA’s precursor                  and would likely occur at existing EGUs
                                                  new or modified stationary sources.                     guidance. Thus, EPA finds that this                    (as modeled in scenario 1); the area
                                                  Ohio’s 2011 and 2021 comprehensive                      analysis serves as a reasonable                        continues to trend downward in both
                                                  modeling inventories were used for this                 evaluation of the sensitivity of PM2.5                 monitored PM2.5 concentrations and
                                                  analysis. To help determine a                           concentrations to a large emissions                    PM2.5 (direct and precursor) emissions;
                                                  theoretical growth scenario as a result of              increase across the spatial area.                      current preliminary monitoring data
                                                  major source expansion (new or                            For the VOC analysis, Ohio added                     shows the area is attaining the standard;
                                                  modified), Ohio first prepared                          1,486 tpy of VOC emissions at 3 existing               and, this small amount of additional
                                                  inventories for VOC and NH3 for 2008                    source locations where VOC emissions                   ambient PM2.5 concentration, based on
                                                  to 2014 for the entire State from Ohio’s                increases potentially could occur in the               the modeling analysis, would therefore
                                                  annual emissions reporting program.                     nonattainment area. Compared to the                    not interfere with the area’s ability to
                                                  Ohio used inventories for the entire                    2011 inventory, this represents a 75%                  attain the standard given that the
                                                  State in order to determine what types                  increase in VOC emissions from existing                current preliminary design value for
                                                  of major sources/source categories are                  stationary sources (EGU and non-EGU).                  2015–2017 is 11.3 mg/m3; and the
                                                  likely to expand (new or modified)                      Compared to the 2021 projected                         additional modeled increase of 0.24
                                                  within the Cleveland area and at what                   inventory, this represents an 80%                      mg/m3 would not impact the area’s
                                                  magnitude (tons per year) those                         increase in stationary source emissions.               ability to attain or maintain the NAAQS.
                                                  expansions are likely to occur. These                   For the NH3 analysis, Ohio added 325                      Based on the results of the modeling
                                                  inventories and the full detailed                       tpy of NH3 emissions (scenario 1) to 3                 demonstration and the additional
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                                                  analysis are contained in Appendix F of                 existing source locations where NH3                    factors described in this section, EPA is
                                                  Ohio’s submission.                                      emissions increases potentially could                  proposing to approve Ohio’s
                                                     Consistent with EPA’s regulation and                 occur in the nonattainment area.                       determination that emissions increases
                                                  draft guidance, OEPA and LADCO have                     Compared to the 2011 inventory, this                   of either VOC or NH3 from new and
                                                  performed sensitivity analyses of                       represents a 447% increase in NH3                      modified major stationary sources
                                                  potential increases in emissions through                emissions from existing stationary                     would not contribute significantly to
                                                  a model simulation that evaluates the                   sources. Compared to the 2021 projected                PM2.5 levels that exceed the 2012 PM2.5
                                                  effect on PM2.5 concentrations in the                   inventory, this represents a 449%                      NAAQS in the Cleveland nonattainment


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                                                                            Federal Register / Vol. 83, No. 107 / Monday, June 4, 2018 / Proposed Rules                                          25615

                                                  area. Accordingly, new or modified          Order 13132 (64 FR 43255, August 10,                               Connecticut. The SIP revision amends
                                                  major sources of VOC and NH3 may be         1999);                                                             requirements for controlling volatile
                                                  exempted from the state’s NNSR                 • Is not an economically significant                            organic compound (VOC) emissions
                                                  program requirements for PM2.5 in the       regulatory action based on health or                               from consumer products and
                                                  Cleveland PM2.5 nonattainment area.         safety risks subject to Executive Order                            architectural and industrial
                                                                                              13045 (62 FR 19885, April 23, 1997);                               maintenance (AIM) coatings by revising
                                                  III. EPA’s Proposed Action                     • Is not a significant regulatory action                        Regulations of Connecticut State
                                                     Ohio’s attainment demonstration          subject to Executive Order 13211 (66 FR                            Agencies (RCSA) sections 22a–174–40,
                                                  modeling, and precursor analysis for        28355, May 22, 2001);                                              22a–174–41, and adding section 22a–
                                                  both attainment planning RACM and              • Is not subject to requirements of                             174–41a. The intended effect of this
                                                  nonattainment NNSR determined that          Section 12(d) of the National                                      action is to propose approval of these
                                                  VOCs and NH3 do not significantly           Technology Transfer and Advancement                                regulations into the Connecticut SIP.
                                                  contribute to PM2.5 concentrations in the Act of 1995 (15 U.S.C. 272 note) because                             This action is being taken in accordance
                                                  area. EPA finds that Ohio’s analysis is     application of those requirements would                            with the Clean Air Act (CAA).
                                                  reasonable and well supported. EPA is       be inconsistent with the CAA; and                                  DATES: Written comments must be
                                                  thus proposing to approve the following        • Does not provide EPA with the                                 received on or before July 5, 2018.
                                                  elements of the 2012 SIP submission:        discretionary authority to address, as                             ADDRESSES: Submit your comments,
                                                  The base year 2011 emissions inventory appropriate, disproportionate human                                     identified by Docket ID No. EPA–R01–
                                                  to meet the section 172(c)(3)               health or environmental effects, using                             OAR–2018–0099 at
                                                  requirement for emission inventories;       practicable and legally permissible                                www.regulations.gov, or via email to
                                                  the demonstration of attainment for         methods, under Executive Order 12898                               mackintosh.david@epa.gov. For
                                                  2021 as meeting the statutory               (59 FR 7629, February 16, 1994).                                   comments submitted at Regulations.gov,
                                                  requirement in CAA 189(a)(1)(B);               In addition, the SIP is not approved
                                                                                                                                                                 follow the online instructions for
                                                  current controls as meeting RACM            to apply on any Indian reservation land
                                                                                                                                                                 submitting comments. Once submitted,
                                                  requirements of 172(c)(1) and               or in any other area where EPA or an
                                                                                                                                                                 comments cannot be edited or removed
                                                  189(a)(1(C).                                Indian tribe has demonstrated that a
                                                                                                                                                                 from Regulations.gov. For either manner
                                                                                              tribe has jurisdiction. In those areas of
                                                  IV. Statutory and Executive Order                                                                              of submission, the EPA may publish any
                                                                                              Indian country, the rule does not have
                                                  Reviews                                                                                                        comment received to its public docket.
                                                                                              tribal implications and will not impose
                                                                                                                                                                 Do not submit electronically any
                                                     Under the CAA, the Administrator is      substantial direct costs on tribal
                                                                                                                                                                 information you consider to be
                                                  required to approve a SIP submission        governments or preempt tribal law as
                                                                                                                                                                 Confidential Business Information (CBI)
                                                  that complies with the provisions of the specified by Executive Order 13175 (65                                or other information whose disclosure is
                                                  CAA and applicable Federal regulations. FR 67249, November 9, 2000).                                           restricted by statute. Multimedia
                                                  42 U.S.C. 7410(k); 40 CFR 52.02(a).                                                                            submissions (audio, video, etc.) must be
                                                                                              List of Subjects in 40 CFR Part 52
                                                  Thus, in reviewing SIP submissions,                                                                            accompanied by a written comment.
                                                  EPA’s role is to approve state choices,        Environmental protection, Air
                                                                                              pollution control, Incorporation by                                The written comment is considered the
                                                  provided that they meet the criteria of                                                                        official comment and should include
                                                  the CAA. Accordingly, this action           reference, Nitrogen dioxide, Ozone,
                                                                                              Particulate matter, Reporting and                                  discussion of all points you wish to
                                                  merely approves state law as meeting                                                                           make. The EPA will generally not
                                                  Federal requirements and does not           recordkeeping requirements, Sulfur
                                                                                                                                                                 consider comments or comment
                                                  impose additional requirements beyond oxides, Volatile organic compounds.                                      contents located outside of the primary
                                                  those imposed by state law. For that           Dated: May 21, 2018.                                            submission (i.e. on the web, cloud, or
                                                  reason, this action:                        Cathy Stepp,                                                       other file sharing system). For
                                                     • Is not a significant regulatory action Regional Administrator, Region 5.
                                                                                                                                                                 additional submission methods, please
                                                  subject to review by the Office of
                                                                                              [FR Doc. 2018–11748 Filed 6–1–18; 8:45 am]                         contact the person identified in the FOR
                                                  Management and Budget under
                                                                                              BILLING CODE 6560–50–P                                             FURTHER INFORMATION CONTACT section.
                                                  Executive Orders 12866 (58 FR 51735,
                                                                                                                                                                 For the full EPA public comment policy,
                                                  October 4, 1993) and 13563 (76 FR 3821,
                                                                                                                                                                 information about CBI or multimedia
                                                  January 21, 2011);                          ENVIRONMENTAL PROTECTION
                                                     • Is not an Executive Order 13771 (82                                                                       submissions, and general guidance on
                                                                                              AGENCY                                                             making effective comments, please visit
                                                  FR 9339, February 2, 2017) regulatory
                                                  action because SIP approvals are                                                                               www.epa.gov/dockets/commenting-epa-
                                                                                              40 CFR Part 52                                                     dockets. Publicly available docket
                                                  exempted under Executive Order 12866;
                                                     • Does not impose an information         [EPA–R01–OAR–2018–0099; FRL–9978–                                  materials are available at
                                                  collection burden under the provisions      26—Region 1]                                                       www.regulations.gov or at the U.S.
                                                  of the Paperwork Reduction Act (44                                                                             Environmental Protection Agency, EPA
                                                                                              Air Plan Approval; Connecticut;                                    New England Regional Office, Office of
                                                  U.S.C. 3501 et seq.);
                                                     • Is certified as not having a           Volatile Organic Compound Emissions                                Ecosystem Protection, Air Quality
                                                  significant economic impact on a            From Consumer Products and                                         Planning Unit, 5 Post Office Square—
                                                  substantial number of small entities        Architectural and Industrial                                       Suite 100, Boston, MA. EPA requests
                                                  under the Regulatory Flexibility Act (5     Maintenance Coatings                                               that if at all possible, you contact the
sradovich on DSK3GMQ082PROD with PROPOSALS




                                                  U.S.C. 601 et seq.);                        AGENCY: Environmental Protection                                   contact listed in the FOR FURTHER
                                                     • Does not contain any unfunded          Agency (EPA).                                                      INFORMATION CONTACT section to
                                                  mandate or significantly or uniquely                                                                           schedule your inspection. The Regional
                                                                                              ACTION: Proposed rule.
                                                  affect small governments, as described                                                                         Office’s official hours of business are
                                                  in the Unfunded Mandates Reform Act         SUMMARY: The Environmental Protection                              Monday through Friday, 8:30 a.m. to
                                                  of 1995 (Pub. L. 104–4);                    Agency (EPA) is proposing to approve a                             4:30 p.m., excluding legal holidays.
                                                     • Does not have Federalism               State Implementation Plan (SIP)                                    FOR FURTHER INFORMATION CONTACT:
                                                  implications as specified in Executive      revision submitted by the State of                                 David Mackintosh, Air Quality Planning


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Document Created: 2018-06-02 00:47:40
Document Modified: 2018-06-02 00:47:40
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 July 5, 2018.
ContactCarolyn Persoon, Environmental Engineer, Control Strategies Section, Air Programs Branch (AR 18J), Environmental Protection Agency, Region 5, 77 West Jackson Boulevard, Chicago, Illinois 60604, (312) 353-8290, [email protected]
FR Citation83 FR 25608 
CFR AssociatedEnvironmental Protection; Air Pollution Control; Incorporation by Reference; Nitrogen Dioxide; Ozone; Particulate Matter; Reporting and Recordkeeping Requirements; Sulfur Oxides and Volatile Organic Compounds

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