Air Plan Approval; North Carolina; Regional Haze, 19519-19526 [2016-07670]
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Federal Register / Vol. 81, No. 65 / Tuesday, April 5, 2016 / Proposed Rules
period for the information collection
requirements in the proposed rule
ended on December 18, 2015, and that
period is not being reopened.
The notice of proposed rulemaking
contains changes to update the
regulations governing the
administration of the Energy Employees
Occupational Illness Compensation
Program Act of 2000, as amended
(EEOICPA or Act), 42 U.S.C. 7384 et
seq., which was originally enacted on
October 30, 2000. The initial version of
EEOICPA established a compensation
program (known as Part B of the Act) to
provide a uniform lump-sum payment
of $150,000 and medical benefits as
compensation to covered employees
who had sustained designated illnesses
due to their exposure to radiation,
beryllium or silica while in the
performance of duty for DOE and
certain of its vendors, contractors and
subcontractors. Part B of the Act also
provides for payment of compensation
to certain survivors of these covered
employees, and for payment of a smaller
uniform lump-sum ($50,000) to
individuals (who would also receive
medical benefits), or their survivors,
who were determined to be eligible for
compensation under section 5 of the
Radiation Exposure Compensation Act
(RECA), 42 U.S.C. 2210 note, by the
Department of Justice. Primary
responsibility for the administration of
Part B of the Act was assigned to DOL
by Executive Order 13179 (‘‘Providing
Compensation to America’s Nuclear
Weapons Workers’’) of December 7,
2000 (65 FR 77487).
The initial version of EEOICPA also
created a second program (known as
Part D of the Act) that required DOE to
establish a system by which DOE
contractor employees (and their eligible
survivors) could seek assistance from
DOE in obtaining state workers’
compensation benefits if a Physicians
Panel determined that the employee in
question had sustained a covered illness
as a result of work-related exposure to
a toxic substance at a DOE facility. A
positive panel finding that was accepted
by DOE required DOE, to the extent
permitted by law, to order its contractor
not to contest the claim for state
workers’ compensation benefits.
However, Congress amended EEOICPA
in Subtitle E of Title XXXI of the Ronald
W. Reagan National Defense
Authorization Act for Fiscal Year 2005,
Public Law 108–375, 118 Stat. 1811,
2178 (October 28, 2004), by abolishing
Part D of the Act and creating a new Part
E (codified at 42 U.S.C. 7385s through
7385s-15) that it assigned to DOL for
administration. Part E established a new
system of variable federal payments for
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DOE contractor employees, uranium
workers covered by section 5 of RECA,
and eligible survivors of such
employees.
The Department’s proposed rule
would amend certain of the existing
regulations governing its administration
of Parts B and E of EEOICPA to conform
them to current administrative practice,
based on its experience administering
the Act since 2001, to bring further
clarity to the regulatory description of
the claims adjudication process, and to
improve the administration of the Act.
Signed at Washington, DC, this 29th day of
March, 2016.
Leonard J. Howie III,
Director, Office of Workers’ Compensation
Programs.
[FR Doc. 2016–07488 Filed 4–4–16; 8:45 am]
BILLING CODE 4510–CR–P
ENVIRONMENTAL PROTECTION
AGENCY
40 CFR Part 52
[EPA–R04–OAR–2015–0518; FRL–9944–50Region 4]
Air Plan Approval; North Carolina;
Regional Haze
Environmental Protection
Agency.
ACTION: Proposed rule.
AGENCY:
The Environmental Protection
Agency (EPA) is proposing to approve a
revision to North Carolina’s regional
haze State Implementation Plan (SIP),
submitted by the North Carolina
Department of Environment and Natural
Resources (NC DENR) on October 31,
2014, that relies on an alternative to
Best Available Retrofit Technology
(BART) to satisfy BART requirements
for electric generating units (EGUs)
formerly subject to the Clean Air
Interstate Rule (CAIR). EPA also
proposes to find that final approval of
this SIP revision would correct the
deficiencies that led to EPA’s limited
disapproval of the State’s regional haze
SIP on June 7, 2012, and proposes to
convert EPA’s June 27, 2012, limited
approval to a full approval. This
submittal addresses the requirements of
the Clean Air Act (CAA or Act) and
EPA’s rules that require states to prevent
any future, and remedy any existing,
manmade impairment of visibility in
mandatory Class I areas caused by
emissions of air pollutants from
numerous sources located over a wide
geographic area (also referred to as the
regional haze program). States are
required to assure reasonable progress
SUMMARY:
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19519
toward the national goal of achieving
natural visibility conditions in Class I
areas.
DATES: Written comments must be
received on or before April 26, 2016.
ADDRESSES: Submit your comments,
identified by Docket ID No. EPA–R04–
OAR–2015–0518 at https://
www.regulations.gov. Follow the online
instructions for submitting comments.
Once submitted, comments cannot be
edited or removed from Regulations.gov.
EPA may publish any comment received
to its public docket. Do not submit
electronically any information you
consider to be Confidential Business
Information (CBI) or other information
whose disclosure is restricted by statute.
Multimedia submissions (audio, video,
etc.) must be accompanied by a written
comment. The written comment is
considered the official comment and
should include discussion of all points
you wish to make. 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, the full
EPA public comment policy,
information about CBI or multimedia
submissions, and general guidance on
making effective comments, please visit
https://www2.epa.gov/dockets/
commenting-epa-dockets.
FOR FURTHER INFORMATION CONTACT:
Michele Notarianni, Air Regulatory
Management Section, Air Planning and
Implementation Branch, Air, Pesticides
and Toxics Management Division, U.S.
Environmental Protection Agency,
Region 4, 61 Forsyth Street SW.,
Atlanta, Georgia 30303–8960. Ms.
Notarianni can be reached by telephone
at (404) 562–9031 or via electronic mail
at Notarianni.Michele@epa.gov.
SUPPLEMENTARY INFORMATION:
Table of Contents
I. Background for EPA’s Proposed
Action
A. Overview of the Regional Haze Rule
Regional haze is visibility impairment
that is produced by a multitude of
sources and activities which are located
across a broad geographic area and emit
fine particles (e.g., sulfates, nitrates,
organic carbon, elemental carbon, and
soil dust) and their precursors (e.g.,
sulfur dioxide (SO2), nitrogen oxides
(NOX), and in some cases, ammonia and
volatile organic compounds). Fine
particle precursors react in the
atmosphere to form fine particulate
matter (PM2.5) which impairs visibility
by scattering and absorbing light.
Visibility impairment reduces the
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clarity, color, and visible distance that
one can see.
In section 169A of the 1977
Amendments to the CAA, Congress
created a program for protecting
visibility in the nation’s national parks
and wilderness areas. This section of the
CAA establishes as a national goal the
‘‘prevention of any future, and the
remedying of any existing, impairment
of visibility in mandatory Class I
Federal areas (Class I areas) which
impairment results from manmade air
pollution.’’ It also directs states to
evaluate the use of retrofit controls at
certain larger, often uncontrolled, older
stationary sources in order to address
visibility impacts from these sources.
Specifically, section 169A(b)(2)(A) of
the CAA requires states to revise their
SIPs to contain such measures as may be
necessary to make reasonable progress
towards the national visibility goal,
including a requirement that certain
categories of existing major stationary
sources built between 1962 and 1977
(known as ‘‘BART-eligible’’ sources)
procure, install, and operate BART. In
the 1990 CAA Amendments, Congress
amended the visibility provisions in the
CAA to focus attention on the problem
of regional haze.
In 1999, EPA promulgated the
Regional Haze Rule, which requires
states to develop and implement SIPs to
ensure reasonable progress toward
improving visibility in Class I areas by
reducing emissions that cause or
contribute to regional haze. See 64 FR
35713 (July 1, 1999). The Regional Haze
Rule requires each state, the District of
Columbia, and the Virgin Islands to
each submit a regional haze SIP no later
than December 17, 2007. Under 40 CFR
51.308(e), the SIP must contain
emission limitations representing BART
and schedules for compliance with
BART for each BART-eligible source,
unless the SIP demonstrates that an
emissions trading program or other
alternative (BART Alternative) will
achieve greater reasonable progress
toward natural visibility conditions than
would have resulted from the
installation and operation of BART at all
sources subject to BART and covered by
the BART Alternative. An approvable
BART Alternative must meet the criteria
in 40 CFR 51.308(e)(2) as described in
section II.B, below.
CAA Section 169A and the Regional
Haze Rule require states to establish a
long-term strategy for making reasonable
progress toward meeting the national
goal of achieving natural visibility
conditions in Class I areas. The longterm strategy is the compilation of all
enforceable emission limitations,
compliance schedules, and other
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measures as necessary for a state to meet
applicable reasonable progress goals
during an implementation period. For
the first implementation period, the
long-term strategy includes BART as
well as any other controls necessary to
ensure reasonable progress.
B. North Carolina’s Regional Haze SIP
North Carolina submitted its regional
haze SIP on December 17, 2007, the
regional haze SIP submittal deadline.
Fully consistent with EPA’s regulations
at the time, the SIP relied on CAIR to
satisfy NOX and SO2 BART
requirements for CAIR-subject EGUs in
the State and to partially satisfy the
requirement for a long-term strategy
sufficient to achieve the state-adopted
reasonable progress goals.
CAIR, promulgated in 2005, required
27 states and the District of Columbia to
reduce emissions of NOX and SO2 that
significantly contribute to, or interfere
with maintenance of, the 1997 national
ambient air quality standards (NAAQS)
for fine particulates and for ozone in
any downwind state. CAIR imposed
specified emissions reduction
requirements on each affected state and
established an EPA-administered cap
and trade program for EGUs that states
could join as a means to meet these
requirements.
EPA demonstrated that CAIR
achieved greater reasonable progress
toward the national visibility goal than
BART for NOX and SO2 at BART-eligible
EGUs in CAIR affected states, and the
Agency revised the Regional Haze Rule
to provide that states participating in
CAIR’s cap-and-trade program need not
require affected BART-eligible EGUs to
install, operate, and maintain BART for
emissions of SO2 and NOx. See 70 FR
39104 (July 6, 2005). As a result, a
number of states in the CAIR region
designed their regional haze SIPs to rely
on CAIR as an alternative to NOx and
SO2 BART for CAIR-subject EGUs.
These states also relied on CAIR as an
element of a long-term strategy for
achieving their reasonable progress
goals.
The United States Court of Appeals
for the District of Columbia Circuit (D.C.
Circuit) initially vacated CAIR in 2008,1
but ultimately remanded the rule to EPA
without vacatur to preserve the
environmental benefits provided by
CAIR.2 On August 8, 2011, acting on the
D.C. Circuit’s remand, EPA promulgated
the Cross-State Air Pollution Rule
(CSAPR) to replace CAIR and thus to
1 North Carolina v. EPA, 531 F.3d 896 (D.C. Cir.
2008).
2 North Carolina v. EPA, 550 F.3d 1176 (D.C. Cir.
2008).
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address the interstate transport of
emissions contributing to nonattainment
and interfering with maintenance of the
two air quality standards covered by
CAIR as well as the 2006 PM2.5
NAAQS.3 See 76 FR 48208.
Due to CAIR’s status as a temporary
measure following the D.C. Circuit’s
2008 ruling, EPA could not fully
approve regional haze SIP revisions to
the extent that they relied on CAIR to
satisfy the BART requirement and the
requirement for a long-term strategy
sufficient to achieve the state-adopted
reasonable progress goals. On these
grounds, EPA finalized a limited
disapproval of North Carolina’s regional
haze SIP on June 7, 2012, triggering the
requirement for EPA to promulgate a
FIP unless North Carolina submitted
and EPA approved a SIP revision that
corrected the deficiency. See 77 FR
33642. EPA finalized a limited approval
of North Carolina’s regional haze SIP on
June 27, 2012, as meeting the remaining
applicable regional haze requirements
set forth in the CAA and the Regional
Haze Rule. See 77 FR 38185.
II. Analysis of North Carolina’s
Regional Haze SIP Submittal
On October 31, 2014, NC DENR
submitted a revision to North Carolina’s
regional haze SIP to correct the
deficiencies identified in the June 7,
2012, limited disapproval by replacing
reliance on CAIR with reliance on a
BART Alternative to satisfy NOx and
SO2 BART requirements for EGUs
formerly subject to CAIR. EPA is
proposing to approve this SIP revision
because EPA is proposing to determine
that the BART Alternative contained
therein meets the requirements of 40
CFR 51.308(e)(2) and that final approval
of this SIP revision would correct the
deficiencies that led to EPA’s limited
disapproval of the State’s regional haze
SIP.
A. North Carolina’s BART Alternative
North Carolina’s October 31, 2014,
SIP revision relies on the State’s Clean
Smokestacks Act (CSA) as a BART
Alternative for NOX and SO2 at the
BART-eligible EGUs formerly covered
by CAIR. North Carolina enacted the
3 Although a number of parties challenged the
legality of CSAPR and the D.C. Circuit initially
vacated and remanded CSAPR to EPA in EME
Homer City Generation, L.P. v. EPA, 696 F.3d 7, 38
(D.C. Cir. 2012), the United States Supreme Court
reversed the D.C. Circuit’s decision on April 29,
2014, and remanded the case to the D.C. Circuit to
resolve remaining issues in accordance with the
high court’s ruling. EPA v. EME Homer City
Generation, L.P., 134 S. Ct. 1584 (2014). On remand,
the D.C. Circuit affirmed CSAPR in most respects
and CSAPR is now in effect. EME Homer City
Generation, L.P. v. EPA, 795 F.3d 118 (D.C. Cir.
2015).
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CSA in 2002 to improve air quality by
imposing firm caps on the total annual
emissions of NOx and SO2 from 42 coalfired EGUs at the 14 power plants
identified in Table 1, below, operated by
Duke Energy Progress, LLC (Progress
Energy) and Duke Energy Carolinas, LLC
(Duke Energy).4 The CSA requires Duke
Energy EGUs and Progress Energy EGUs
to reduce SO2 emissions to 150,000 tons
and 100,000 tons, respectively, by the
end of 2009 and to further reduce SO2
emissions to 80,000 tons and 50,000
tons, respectively, by the end of 2013.
The CSA limits NOx emissions from
Duke Energy EGUs and Progress Energy
EGUs to 35,000 tons and 25,000 tons,
respectively, beginning on January 1,
2007, and tightens the emissions cap on
Duke Energy EGUs to 31,000 tons as of
January 1, 2009. Collectively, the caps
require these utilities to: (1) Reduce
actual emissions of NOX from 245,000
tons in 1998 to 56,000 tons by 2009 (a
77 percent reduction), and (2) reduce
actual SO2 emissions from 489,000 tons
in 1998 to 250,000 tons by 2009 (a 49
percent reduction) and to 130,000 tons
by 2013 (a 73 percent reduction).
Duke Energy and Progress Energy
must meet the CSA emission caps
through actual reductions. The CSA
does not allow these units to buy or
trade emissions credits (also referred to
as ‘‘allowances’’) under CSAPR to meet
these caps even though each utility may
decide how to allocate emission
reductions across its affected units.5
Furthermore, any CSAPR allowances in
excess of the CSA emissions caps must
be surrendered to the North Carolina
State Treasurer thereby preventing the
transfer of these allowances to EGUs
located in other states within the
CSAPR trading program.6 EPA approved
the CSA emissions caps into North
Carolina’s SIP on September 26, 2011.
See 76 FR 59250.
Progress Energy and Duke Energy
have shut down 22 of the coal-fired
EGUs subject to the CSA and have
installed scrubbers to control SO2
emissions and Selective Catalytic
Reduction (SCR) or Selective Noncatalytic Reduction (SNCR) to control
NOX emissions on all of the currently
operating coal-fired EGUs subject to the
CSA in order to meet the emissions
caps. Table 1, below, identifies the
retired units and the NOX and SO2
emissions controls on the operating
units.
TABLE 1—EGUS SUBJECT TO THE CSA
Status
Facility
Parent company *
Operating 7 ............
Allen ......................
Asheville ...............
Buck ......................
Belews Creek .......
Cliffside .................
Duke .....................
Progress ...............
Duke .....................
Duke .....................
Duke .....................
Marshall ................
Duke .....................
Mayo .....................
Roxboro ................
Progress ...............
Progress ...............
Cape Fear ............
Cliffside .................
Dan River .............
Lee ........................
Riverbend .............
Sutton ...................
Weatherspoon ......
Progress ...............
Duke .....................
Duke .....................
Progress ...............
Duke .....................
Progress ...............
Progress ...............
Retired ..................
Unit ID
1–5
1–2
5–9
1–2
5
6
1–2, 4
3
1
1–3
4
5–6
4
1–3
1–3
7–10
3
1–3
BART-eligible
NOX Control
...............................
Y ...........................
...............................
Y ...........................
Y ...........................
...............................
Y ...........................
SNCR ...................
SCR ......................
SNCR ...................
SCR ......................
SCR ......................
SCR ......................
SNCR ...................
SCR ......................
SCR ......................
SCR ......................
SCR ......................
...............................
Y ...........................
SO2 Control
FGD
FGD
**
FGD
FGD
FGD
FGD
FGD
FGD
FGD
FGD
Y.
* Duke Energy and Progress Energy merged on July 2, 2012.
** Units converted from coal to natural gas.
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B. EPA’s Evaluation of North Carolina’s
BART Alternative
The Regional Haze Rule requires that
a SIP revision establishing a BART
Alternative include the three elements
listed below, and EPA has evaluated
North Carolina’s BART Alternative with
respect to each of these elements.
• A demonstration that the emissions
trading program or other alternative
measure will achieve greater reasonable
progress than would have resulted from
the installation and operation of BART
at all sources subject to BART in the
4 More information on the CSA regulation can be
found at https://daq.state.nc.us/news/leg/
cleanstacks.shtml. At the time that the CSA was
enacted, the Progress Energy units were owned by
Progress Energy Carolinas, Inc. and the Duke Energy
units were owned by Duke Power.
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state and covered by the alternative
program. See 40 CFR 51.308(e)(2)(i).
• A requirement that all necessary
emissions reductions take place during
the period of the first long-term strategy
for regional haze. See 40 CFR
51.308(e)(2)(iii).
• A demonstration that the emissions
reductions resulting from the alternative
measure will be surplus to those
reductions resulting from measures
adopted to meet requirements of the
CAA as of the baseline date of the SIP.
See 40 CFR 51.308(e)(2)(iv).
EPA seeks comments on its proposed
findings under each of these elements,
which are described in detail below.
5 The CSA also prohibited the purchase and trade
of CAIR credits to meet the CSA caps when CAIR
was in effect. Allowances cannot be traded between
the units owned by Progress Energy and those
owned by Duke Energy.
6 In 2013, Duke Energy reported an excess of
58,961 CAIR SO2 allowances and 1,987 CAIR NOx
allowances above CSA emissions limits and
Progress Energy reported 78,050 excess CAIR SO2
allowances. All of these excess allowances have
been verified and transferred to the State.
7 This category includes EGUs that were
converted from coal to natural gas.
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1. Demonstration That the BART
Alternative Will Achieve Greater
Reasonable Progress Than BART
Pursuant to 40 CFR 51.308(e)(2)(i), the
state must demonstrate that the BART
Alternative will achieve greater
reasonable progress than would have
resulted from the installation and
operation of BART at all sources subject
to BART in the state and covered by the
alternative program. This demonstration
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must be based on the five criteria
addressed below.
a. List of All BART-Eligible Sources
Within the State
Pursuant to 40 CFR 51.308(e)(2)(i)(A),
the SIP submission must include a list
of all BART-eligible sources within the
state. In its December 31, 2007, regional
haze SIP submittal, North Carolina
identified all 17 BART-eligible sources
located in the State. See 77 FR 11858,
11873–11874 (February 28, 2012). Of
these 17 sources, six were subject to
CAIR and 11 were non-EGUs. North
Carolina determined that one non-EGU
source was subject to BART, nine were
exempt from BART, and one was shut
down. See 77 FR 11873, 11874
(February 28, 2012). The State relied on
CAIR to satisfy the NOX and SO2 BART
requirements for the 13 BART-eligible
EGUs at the six CAIR-subject sources.
EPA approved the State’s identification
of BART-eligible and BART-subject
sources and the BART determination for
the one BART-subject source not subject
to CAIR (Blue Ridge Paper). See 77 FR
38185 (June 27, 2012). EPA issued a
limited disapproval of the State’s SIP
submittal based on its reliance on CAIR
to satisfy NOX and SO2 BART
requirements for certain sources and to
satisfy the long-term strategy
requirements of its EGUs. See 77 FR
33642 (June 7, 2012). In its October 31,
2014, SIP revision, the State lists the 13
BART-eligible EGUs impacted by EPA’s
limited disapproval. Because the State
identified all BART-eligible units in its
regional haze SIP and identified all
outstanding BART-eligible units in its
BART Alternative SIP revision, EPA
proposes to find that the State has met
the requirement of 40 CFR
51.308(e)(2)(i)(A).
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b. List of All BART-Eligible Sources and
All Bart Source Categories Covered by
the Alternative Program
Pursuant to 40 CFR 51.308(e)(2)(i)(B),
the SIP submission must include a list
of all BART-eligible sources and all
BART source categories covered by the
BART Alternative, and each BARTeligible source in the state must be
subject to the requirements of the
alternative program or have a federally
enforceable emission limitation
determined by the state and approved
by EPA as meeting BART. As previously
mentioned, EPA approved the BART
determinations for all BART-eligible
units in North Carolina with the
8 VISTAS is a collaborative effort of state
governments, tribal governments, and various
Federal agencies established to initiate and
coordinate activities associated with the
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exception of NOX and SO2 BART for the
13 BART-eligible EGUs formerly
covered by CAIR, and these 13 units are
subject to the BART Alternative.
Therefore, EPA proposes to find that the
SIP revision satisfies 40 CFR
51.308(e)(2)(i)(B).
c. Analysis of BART and Associated
Emissions Reductions
Pursuant to 40 CFR 51.308(e)(2)(i)(C),
the SIP submission must include an
analysis of the best system of
continuous emissions control
technology available and associated
emission reductions achievable for each
source subject to BART and covered by
the alternative program. This analysis
must be conducted by making a BART
determination for each source subject to
BART and covered by the alternative
program unless the alternative has been
designed to meet a requirement other
than BART. In this latter case, the State
may determine the best system of
continuous emissions control
technology and associated emission
reductions for similar types of sources
within a source category based on both
source-specific and category-wide
information, as appropriate. North
Carolina opted to use the simplified
approach because North Carolina
created the CSA to meet requirements
other than BART.
In using the simplified approach for
EGUs, states may estimate the emissions
reductions associated with BART based
on an analysis of what BART is likely
to be for similar types of sources within
the source category using the
presumptions for EGUs in the
Guidelines for BART Determinations
under the Regional Haze Rule located at
40 CFR part 51, Appendix Y (BART
Guidelines). The BART Guidelines
contain presumptive NOX and SO2
emissions limits for EGUs greater than
200 megawatt (MW) capacity at plants
with a total generating capacity in
excess of 750 MW. When a state is
estimating the emissions reductions
achievable through BART at the BARTeligible EGUs covered by the BART
Alternative, it should assume that these
EGUs would control at the presumptive
level unless the state determines that
such presumptions are not appropriate.
i. SO2 Emissions Reductions
The BART Guidelines specify the
presumptive SO2 BART limit at 95
percent control or 0.15 pounds per
million British Thermal Units (lbs/
management of regional haze, visibility, and other
air quality issues in the southeastern United States.
Member state and tribal governments include:
Alabama, Florida, Georgia, Kentucky, Mississippi,
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MMBtu) for uncontrolled EGUs greater
than 200 MW at 750 MW power plants
unless an alternative control level is
justified. See 40 CFR part 51, App. Y,
IV.E.4. North Carolina used this
presumptive limit to calculate SO2
BART emissions by multiplying the
limit by each BART-eligible EGU’s 2002
heat input in MMBtu. When compared
to actual 2002 SO2 emissions, the State
calculated that BART would reduce SO2
emissions by 274,668 tons. See Table 3
in North Carolina’s October 31, 2014,
submittal.
ii. NOX Emissions Reductions
All of the BART-eligible EGUs subject
to the CSA burn bituminous coal and
have either wall-fired or tangential-fired
boilers. See Table 1 of the State’s
October 31, 2014, submittal. The
presumptive NOX emission limits for
these EGUs are 0.39 and 0.28 lb/MMbtu
for wall-fired and tangential-fired
boilers, respectively, unless an
alternative control level is justified. See
40 CFR part 51, App. Y, IV.E.5. North
Carolina used these presumptive limits
to calculate NOX BART emissions by
multiplying the corresponding limits by
each BART-eligible EGU’s 2002 heat
input in MMBtu. When compared to
actual 2002 NOX emissions, the State
calculated that BART would reduce
NOX emissions by 19,364 tons. See
Table 8 in North Carolina’s October 31,
2014, submittal.
d. Analysis of Emissions Reductions
Associated With the BART Alternative
Pursuant to 40 CFR 51.308(e)(2)(i)(D),
the SIP submission must include an
analysis of the projected emissions
reductions achievable through the
BART Alternative. North Carolina
projected these reductions using four
different methods: (1) CSA emissions
caps; (2) 2018 emissions projected by
the Visibility Improvement—State and
Tribal Association of the Southeast
(VISTAS) 8 and presented in North
Carolina’s December 17, 2007, regional
haze SIP submission; (3) 2018 emissions
projected by EPA’s Integrated Planning
Model (IPM); and (4) 2018 emissions
projected by Duke Energy after the
merger with Progress Energy. North
Carolina also evaluated actual emissions
reductions from the CSA units by
comparing 2009, 2010, 2011, 2012, and
2013 emissions to 2002 levels. Table 2
shows the emissions reductions
associated with the BART Alternative
using the CSA caps and 2018
North Carolina, South Carolina, Tennessee,
Virginia, West Virginia, and the Eastern Band of the
Cherokee Indians.
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projections identified above, and Tables
3 and 4 show the reductions using
actual emissions from 2009–2015.
19523
3 and 4 show the reductions using
actual emissions from 2009–2015.
TABLE 2—BART ALTERNATIVE EMISSIONS REDUCTIONS (TONS) FROM 2002 BASELINE USING CSA CAPS AND 2018
PROJECTIONS
Pollutant
Emissions ............................
Reductions from Baseline ...
Emissions ............................
Reductions from Baseline ...
2002 Baseline
SO2 .....................................
.............................................
NOX ....................................
.............................................
CSA Cap
467,321
........................
142,879
........................
130,000
337,321
56,000
86,879
2018 VISTAS
89,343
377,978
42,133
100,746
2018 IPM
24,732
442,589
22,792
120,087
2018 Duke
23,901
443,420
22,414
120,465
TABLE 3—BART ALTERNATIVE EMISSIONS REDUCTIONS FROM 2002 BASELINE USING ACTUAL EMISSIONS (TONS)—SO2
2002 Baseline
Emissions ............................
Reductions from Baseline ...
2009 Actuals
467,321 ..............................
.............................................
2010 Actuals
110,818
356,503
116,529
350,792
2011 Actuals
73,457
393,864
2012 Actuals
53,458
413,863
2013 Actuals
42,080
425,241
TABLE 4—BART ALTERNATIVE EMISSIONS REDUCTIONS FROM 2002 BASELINE USING ACTUAL EMISSIONS (TONS)—NOX
2002 Baseline
Emissions ............................
Reductions from Baseline ...
142,879 ..............................
.............................................
i. CSA Caps
Under the CSA, Duke Energy EGUs
and Progress Energy EGUs were
required to reduce SO2 emissions to
150,000 tons and 100,000 tons,
respectively, by the end of 2009 and to
further reduce SO2 emissions to 80,000
tons and 50,000 tons, respectively, by
the end of 2013. Using the 2013
emissions caps, the BART Alternative
would reduce SO2 emissions by 337,321
tons from 2002 levels.
The CSA limited NOX emissions from
Duke Energy EGUs and Progress Energy
EGUs to 35,000 tons and 25,000 tons,
respectively, beginning on January 1,
2007, and tightened the emissions cap
on Duke Energy EGUs to 31,000 tons as
of January 1, 2009. Using the 2009
emissions caps, the BART Alternative
would reduce NOX emissions by 86,879
tons from 2002 levels.
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ii. 2018 Projections
VISTAS developed 2018 emissions
projections for the states in the VISTAS
region to use when preparing the states’
regional haze SIP submissions. VISTAS
accounted for the CSA emissions caps
and other control programs, including
CAIR, in its 2018 modeling and
projected total NOX and SO2 emissions
from North Carolina’s EGUs at 42,133
tons and 89,343 tons, respectively. See
77 FR 11866 (February 28, 2012). North
Carolina compared these 2018 VISTAS
emissions projections for the CSA units
with 2002 actual emissions and
estimated that NOX and SO2 emissions
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2009 Actuals
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2010 Actuals
37,829
105,050
47,373
95,506
from these units would decrease by
100,746 tons and 377,978 tons,
respectively. The projected NOX and
SO2 emissions reductions from only the
BART-eligible sources in the CSA
would be 69,485 tons and 276,998 tons,
respectively.
North Carolina also included EPA
IPM modeling year 2018 NOX and SO2
emissions estimates for the CSA EGUs.
The IPM predicted that these units
would emit approximately 22,792 tons
of NOXemissions in 2018, resulting in a
projected reduction of 120,087 tons
when compared with 2002 actual
emissions. The IPM also predicted
24,732 tons of SO2 emissions from these
units in 2018, resulting in a projected
reduction of 442,589 tons compared to
2002 actual emissions. These
predictions are well below VISTAS’
2018 projections and the CSA emissions
caps.
Following the merger with Progress
Energy, Duke Energy projected 2018
emissions for its EGUs in North Carolina
due to the significant shift from coal to
natural gas and the retirement of several
EGUs in the State. These estimates were
prepared by Duke Energy based on its
economic modeling, and they differ
only slightly from the IPM forecast. The
primary difference between the Duke
Energy and IPM estimates is that EPA
assumed in the IPM that the Allen
facility’s coal-fired EGUs would be shut
down by 2018.9 Duke Energy projected
9 Duke Energy must retire Allen Units 1 and 2 by
December 31, 2024, pursuant to a consent decree
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Sfmt 4702
2011 Actuals
39,361
103,518
2012 Actuals
42,147
100,732
2013 Actuals
40,410
102,469
that the CSA units would emit
approximately 22,414 tons of NOX and
23,901 tons of SO2 in 2018, a reduction
of approximately 120,465 and 443,420
tons of NOX and SO2, respectively, from
2002 levels, respectively.
iii. Actual Emissions Reductions
North Carolina analyzed actual
emissions reductions achieved with the
CSA for each year from 2009 to 2013
using emissions reported to EPA’s Clean
Air Markets Division. North Carolina
started with 2009 because this is the
year when Duke Energy and Progress
Energy were required to comply with
the CSA’s first SO2 cap and the final
NOX cap. Emissions of SO2 steadily
decreased from 116,529 tons in 2010 to
42,080 tons in 2013. Actual NOX
emissions ranged from 47,373 tons in
2010 to 40,410 tons in 2013. See Tables
6 and 11 in North Carolina’s October 31,
2014, submittal for actual emissions by
CSA facility.
e. Determination That the BART
Alternative Achieves Greater
Reasonable Progress Than BART
Pursuant to 40 CFR 51.308(e)(2)(i)(E),
the state must provide a determination
that the alternative achieves greater
reasonable progress than BART under
40 CFR 51.308(e)(3) or otherwise based
on the clear weight of evidence. 40 CFR
entered by the United States District Court for the
Middle District of North Carolina on October 20,
2015. Consent Decree, United States, et al. v. Duke
Energy Corporation, Civil Case No. 1:00–cv–1262
(M.D.N.C. October 20, 2015).
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covered by the CSA based on the
following weight of evidence.
First, BART would result in controls
for NOX and SO2 only at the 13 BARTeligible EGUs, whereas the BART
Alternative applies to 42 EGUs. Of these
42 EGUs, 17 have retired, five have
converted from coal to natural gas, and
the remaining 20 coal-fired EGUs in
operation are controlled for NOX and
SO2.
Second, the 20 operating coal-fired
EGUs in the BART Alternative have
installed emissions controls to meet the
CSA that are, with the exception of NOX
control at Allen Units 1–5 and Marshall
Units 1, 2, and 4, the most stringent
controls available for SO2 and NOX. All
of the CSA EGUs use flue gas
desulphurization (i.e., scrubbers) to
remove SO2. SO2 controls are of
particular importance because, as North
Carolina demonstrated in its regional
haze SIP, sulfates are the major
contributor to PM2.5 mass and visibility
impairment at Class I areas in the
VISTAS region and in states
neighboring this region.10 See 77 FR
11867, 11877 (February 28, 2012). Thus,
North Carolina concluded that reducing
SO2 emissions from EGU and non-EGU
point sources in the VISTAS states
would have the greatest visibility
benefits for the North Carolina Class I
areas and the Class I areas that the
State’s sources impact. See 77 FR 11868
(February 28, 2012).
Regarding NOX, all of the CSA-subject
EGUs in operation are using SCR for
post-combustion NOX control, with the
exception of Allen Units 1–5 (not
BART-eligible) and Marshall Units 1, 2,
and 4 (BART-eligible) that use SNCR.
Although SCR is the most stringent NOX
control technology available for EGU
retrofits, it is unlikely that a BART
51.308(e)(3) provides two different tests
for determining whether the alternative
achieves greater reasonable progress
than BART. Under the first test, if the
distribution of emissions is not
substantially different than under
BART, and the alternative measure
results in greater emission reductions,
then the alternative measure may be
deemed to achieve greater reasonable
progress. If the distribution of emissions
is significantly different, however, then
the state must use the second test and
conduct dispersion modeling to
determine differences in visibility
between BART and the alternative
program for each impacted Class I area,
for the worst and best 20 percent of
days. See 40 CFR 51.308(e)(3). The
modeling would demonstrate ‘‘greater
reasonable progress’’ if: (1) Visibility
does not decline in any Class I area, and
(2) there is an overall improvement in
visibility, determined by comparing the
average differences between BART and
the alternative over all affected Class I
areas. North Carolina did not provide
dispersion modeling because it believes
that greater reasonable progress can be
shown through an emissions reduction
analysis under the first 40 CFR
51.308(e)(3) test and/or through a
weight-of-evidence analysis based on
the types of controls installed on the
BART-eligible CSA units, the reductions
in visibility impairing pollutants
associated with the CSA, and the
uniform nature of these reductions
across all EGUs subject to the CSA.
EPA proposes to determine that the
CSA achieves greater reasonable
progress than would be achieved
through the installation and operation of
BART at the BART-eligible EGUs
determination would result in the
installation of SCR at Marshall Units 1,
2, and 4 given the EGUs’ NOX
emissions, the distance from Class I
areas, the cost of replacing SNCR with
SCR, and the incremental visibility
improvement associated with the switch
from SNCR to SCR. As discussed in
North Carolina’s 2007 regional haze SIP
submittal, nitrates are a relatively small
contributor to PM2.5 mass and visibility
impairment on the 20 percent worst
days at the inland Class I areas in
VISTAS, which include all of the North
Carolina Class I areas except for the
Swanquarter National Wilderness Area.
Therefore, the visibility benefits of
reducing NOX emissions at these Class
I areas are small. See 77 FR 11868
(February 28, 2012).
Third, the emissions reductions under
the BART Alternative are greater than
those that would result from the
installation and operation of BART at
the BART-eligible EGUs covered by the
CSA under a variety of scenarios.11 As
discussed in section II.B.1.c, above,
North Carolina compared CSA
emissions to BART emissions using the
CSA caps, 2018 emissions projections
prepared by VISTAS, IPM, and Duke
Energy, and actual NOX and SO2
emissions. Only the emission reductions
required by the CSA cap are federally
enforceable by virtue of being included
in North Carolina’s SIP. North
Carolina’s calculations of emission
reductions relative to the various
projections provide additional
information and support for its assertion
that the BART Alternative achieves
greater reasonable progress than BART.
Tables 5 through 7, below, identify the
additional emissions reductions
achieved through the BART Alternative.
TABLE 5—BART ALTERNATIVE EMISSIONS REDUCTIONS BEYOND BART USING CSA CAPS AND 2018 PROJECTIONS
(TONS)
Pollutant
Reductions from 2002
Baseline.
Reductions beyond BART ..
Reductions from 2002
Baseline.
Reductions beyond BART ..
BART
CSA cap
2018 VISTAS
2018 IPM
2018 Duke
SO2 .....................................
274,668
337,321
377,978
442,589
443,420
.............................................
NOX ....................................
........................
19,364
62,653
86,879
103,310
100,746
167,921
120,087
168,752
120,465
.............................................
........................
67,515
81,382
100,723
101,101
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TABLE 6—BART ALTERNATIVE EMISSIONS REDUCTIONS BEYOND BART USING ACTUAL EMISSIONS (TONS)—SO2
BART
Reductions from 2002 Baseline ...............
Reductions beyond BART .......................
10 The VISTAS region includes North Carolina
and the two states, Virginia and Tennessee, that
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2009 Actuals
274,668
........................
2010 Actuals
356,503
81,835
350,791
76,123
North Carolina identified as having a Class I area
potentially impacted by its sources.
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Sfmt 4702
2011 Actuals
393,864
119,196
2012 Actuals
413,862
139,194
2013 Actuals
425,241
150,573
11 As discussed above, North Carolina used EPA’s
presumptive limits for NOX and SO2 as the BART
benchmark.
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TABLE 7—BART ALTERNATIVE EMISSIONS REDUCTIONS BEYOND BART USING ACTUAL EMISSIONS (TONS)— NOX
BART
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Reductions from 2002 Baseline ...............
Reductions beyond BART .......................
19,364
........................
Compared with BART, North
Carolina’s current CSA caps achieve an
additional SO2 reduction of 62,653 tons
and an additional NOX reduction of
67,515 tons relative to the 2002
baseline. Table 5 also shows that,
depending on the origin of the 2018
projections, the BART Alternative
results in an additional SO2 reduction of
103,310 to 168,752 tons and an
additional NOX reduction of 81,382 to
101,101 tons beyond BART. The
comparison of actual emissions under
the BART Alternative to estimated
BART emissions in Tables 6 and 7
shows that, between 2009 and 2013, the
CSA achieved 76,123 to 150,573 tons of
additional SO2 reductions and 76,142 to
84,154 tons of additional NOX
reductions beyond BART. Regardless of
the reduction scenario, the BART
Alternative results in significantly lower
NOX and SO2 emissions when compared
to BART.
Fourth, the NOX and SO2 emissions
controls needed to comply with CSA
requirements began operating before any
controls would begin operation under
BART. BART must be installed and
operated as expeditiously as practicable,
but no later than five years after the date
of EPA approval of the regional haze
SIP. See CAA section 169A(g)(4); 40
CFR 51.308(e)(1)(iv). The CSA, enacted
in 2002, required compliance with the
initial emissions caps for SO2 in 2007
and NOX in 2009, and therefore resulted
in emissions reductions before EPA
issued a limited approval of North
Carolina’s regional haze SIP on June 27,
2012. See 77 FR 38185. Even if EPA had
approved source-specific BART
determinations for the CAIR-subject
units in North Carolina at that time, the
BART installation and operation
deadline would have been set after
compliance with the CSA began.
Lastly, although the CSA does allow
for limited emissions shifting, there is
no indication that implementation of
the CSA would result in any ‘‘hot
spots,’’ as compared to BART. The
shifting of emissions under the CSA is
limited by the prohibition on emissions
credit trading between the EGUs owned
by Progress Energy and those owned by
Duke Energy before the 2012 merger, as
mentioned above. Additionally, the
2009–2013 SO2 and NOX emissions data
summarized in Tables 6 and 11,
respectively, of North Carolina’s
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2009 Actuals
2010 Actuals
105,049
85,685
95,506
76,142
submittal indicate that emissions have
not shifted to any significant degree
between the EGUs subject to the CSA
during this time period. Emissions
reductions were taking place at each
EGU facility and not isolated to any one
facility or group of facilities. To the
extent that any shifting might occur in
the future, all of the operating Progress
Energy units subject to the CSA operate
with the most stringent NOX and SO2
control equipment, and all of the Duke
Energy units subject to the CSA operate
with the most stringent NOX and SO2
controls with the exception of Allen,
Marshall, and Buck which operate
SNCR. Of the SNCR units, only Marshall
is BART-eligible. Even assuming that a
BART analysis would result in a
requirement to install SCR at Marshall,
any shifting of emissions to Marshall
would be restricted by its available
capacity. Furthermore, any incremental
decrease in NOX emissions if the State
were to require SCR at Marshall would
not be expected to have a significant
impact on visibility at Class I areas due,
in part, to the fact that nitrates are a
relatively small contributor to PM2.5
mass and visibility impairment on the
20 percent worst days at the Class I
areas in closest proximity to Marshall.
Based on the evidence provided
above, EPA proposes to find that the
BART Alternative achieves greater
reasonable progress than BART and thus
satisfies the requirements of 40 CFR
51.308(e)(2)(i)(E).
2. Requirement That Emissions
Reductions Occur During the First
Implementation Period
Pursuant to 40 CFR 51.308(e)(2)(iii),
the state must ensure that all necessary
emission reductions take place during
the period of the first long-term strategy
for regional haze (i.e., by December 31,
2018). The Regional Haze Rule further
provides that, to meet this requirement,
the state must provide a detailed
description of the alternative measure,
including schedules for
implementation, the emission
reductions required by the program, all
necessary administrative and technical
procedures for implementing the
program, rules for accounting and
monitoring emissions, and procedures
for enforcement. Id. EPA proposes to
find that the BART Alternative meets
this requirement because the State has
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Fmt 4702
Sfmt 4702
2011 Actuals
103,518
84,154
2012 Actuals
2013 Actuals
100,732
81,368
102,468
83,104
fully described the CSA, the CSA
prescribes emissions reductions through
the use of emissions caps, the emissions
caps are in effect and incorporated into
North Carolina’s SIP, and all CSAsubject EGUs are required to meet the
accounting and monitoring
requirements of CSAPR.12 Furthermore,
all CSA-related permitting and
construction activities have been
completed to meet the CSA emissions
caps. EPA therefore proposes to find
that North Carolina has satisfied the
requirements of 40 CFR 51.308(e)(2)(iii).
3. Demonstration That Emissions
Reductions Are Surplus
Pursuant to 40 CFR 51.308(e)(2)(iv),
the SIP must demonstrate that the
emissions reductions resulting from the
alternative measure will be surplus to
those reductions resulting from
measures adopted to meet requirements
of the CAA as of the baseline date of the
SIP. The baseline date for regional haze
SIPs is 2002, and the first NOX and SO2
CSA emissions caps were not effective
until 2007 and 2009, respectively. See
64 FR 35742. Therefore, EPA proposes
to find that the reductions associated
with the CSA are surplus in accordance
with 40 CFR 51.308(e)(2)(iv).
B. Reasonable Progress Evaluation
EPA finalized a limited disapproval of
North Carolina’s regional haze SIP based
on its reliance on CAIR to satisfy the
BART requirement and the requirement
for a long-term strategy sufficient to
achieve the state-adopted reasonable
progress goals. See 77 FR 33653. In that
action, EPA also finalized limited
disapprovals of a number of other states’
regional haze SIPs that relied on CAIR
to satisfy these requirements and
finalized Federal Implementation Plans
(FIPs) that substituted reliance on
CSAPR for reliance on CAIR for several
states. Id. However, North Carolina’s
2014 regional haze SIP submission
relies on the CSA, rather than CSAPR,
to correct the deficiencies in its regional
haze SIP. EPA therefore must evaluate
whether inclusion of the CSA in lieu of
CAIR in the state’s long-term strategy is
sufficient to ensure reasonable progress.
As discussed in section II.B.1.e,
sulfates are the major contributor to
visibility impairment at Class I areas in
12 See
E:\FR\FM\05APP1.SGM
76 FR 48208 (August 8, 2011).
05APP1
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the VISTAS region. Based on its
conclusion that SO2 reductions would
result in the greatest visibility
improvements, North Carolina’s 2007
regional haze SIP submission focused its
reasonable progress control analysis on
emission units that fall within the SO2
area of influence of any Class I area, as
modeled by VISTAS, and have a one
percent or greater contribution to the
sulfate visibility impairment in at least
one Class I area. See 77 FR 11869.
Sixteen EGUs subject to the CSA and
formerly subject to CAIR met North
Carolina’s reasonable process screening
criteria. The State subsequently
concluded in its regional haze SIP
submission that no additional controls
beyond CAIR and the CSA were
reasonable for these units during the
first implementation period. See 77 FR
11870, 11872. North Carolina’s longterm strategy relied, in part, on this
conclusion.
Ten of the 16 aforementioned units
have shut down or converted to natural
gas. The remaining coal-fired units have
each installed FGD to comply with the
CSA. Given North Carolina’s focus on
reducing SO2 emissions to achieve
reasonable progress and the fact that
coal-fired EGUs remaining in operation
are already subject to the most stringent
SO2 controls available, EPA proposes to
find that no additional controls are
necessary for these units to achieve
reasonable progress during the first
implementation period. This proposed
finding and the proposed finding that
North Carolina’s BART Alternative
meets the requirements of the Regional
Haze Rule form the basis for EPA’s
proposal to convert EPA’s limited
disapproval of the State’s regional haze
SIP to a full approval.
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III. Proposed Action
EPA is proposing to find that North
Carolina’s regional haze SIP revision
meets the applicable requirements of the
CAA and Regional Haze Rule, including
the requirement that the BART
Alternative achieve greater reasonable
progress than would be achieved
through the installation and operation of
BART. EPA also proposes to find that
final approval of this SIP revision would
correct the deficiencies that led to EPA’s
limited disapproval of the State’s
regional haze SIP on June 7, 2012, and
proposes to convert the EPA’s June 27,
2012, limited approval to a full
approval. These proposed actions, if
finalized, would eliminate the need for
EPA to issue a FIP to remedy the
deficiencies in North Carolina’s
December 17, 2007, SIP submission.
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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
Act and applicable Federal regulations.
See 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, these proposed
actions merely approve State law as
meeting Federal requirements and does
not impose additional requirements
beyond those imposed by State law. For
that reason, these proposed actions:
• Are 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);
• do not impose an information
collection burden under the provisions
of the Paperwork Reduction Act (44
U.S.C. 3501 et seq.);
• are 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.);
• do 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);
• do not have Federalism
implications as specified in Executive
Order 13132 (64 FR 43255, August 10,
1999);
• are not an economically significant
regulatory action based on health or
safety risks subject to Executive Order
13045 (62 FR 19885, April 23, 1997);
• are not a significant regulatory
action subject to Executive Order 13211
(66 FR 28355, May 22, 2001);
• are not subject to requirements of
Section 12(d) of the National
Technology Transfer and Advancement
Act of 1995 (15 U.S.C. 272 note) because
application of those requirements would
be inconsistent with the Clean Air Act;
and
• do 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).
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 as specified by Executive
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Fmt 4702
Sfmt 4702
Order 13175 (65 FR 67249, November 9,
2000), nor will it impose substantial
direct costs on tribal governments or
preempt tribal law.
List of Subjects in 40 CFR Part 52
Environmental protection, Air
pollution control, Carbon mo NOX ide,
Incorporation by reference,
Intergovernmental relations, Nitrogen
dioxide, Ozone, Particulate matter,
Reporting and recordkeeping
requirements, Sulfur oxides, Volatile
organic compounds.
Authority: 42 U.S.C. 7401 et seq.
Dated: March 25, 2016.
Heather McTeer Toney,
Regional Administrator, Region 4.
[FR Doc. 2016–07670 Filed 4–4–16; 8:45 am]
BILLING CODE 6560–50–P
ENVIRONMENTAL PROTECTION
AGENCY
40 CFR Part 52
[EPA–R04–OAR–2015–0696; FRL–9944–54–
Region 4]
Air Plan Approval; South Carolina;
Transportation Conformity Update
Environmental Protection
Agency (EPA).
ACTION: Proposed rule.
AGENCY:
The Environmental Protection
Agency (EPA) is proposing to approve a
State Implementation Plan (SIP)
revision submitted by the State of South
Carolina, through the South Carolina
Department of Health and
Environmental Control, on October 13,
2015. This revision consists of
transportation conformity criteria and
procedures related to interagency
consultation and enforceability of
certain transportation-related control
measures and mitigation measures. The
intended effect of this approval is to
update the transportation conformity
criteria and procedures in the South
Carolina SIP to reorganize previous
exhibits into a single Memorandum of
Agreement document as well as to
update signatories to add the newly
established Lowcountry Area
Transportation Study to the list of
Metropolitan Planning Organizations,
created to represent a new urbanized
area designated as a result of the 2010
Census. This proposed action is being
taken pursuant to the Clean Air Act.
DATES: Written comments must be
received on or before May 5, 2016.
ADDRESSES: Submit your comments,
identified by Docket ID No. EPA–R04–
OAR–2015–0696 at https://
SUMMARY:
E:\FR\FM\05APP1.SGM
05APP1
Agencies
[Federal Register Volume 81, Number 65 (Tuesday, April 5, 2016)]
[Proposed Rules]
[Pages 19519-19526]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2016-07670]
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ENVIRONMENTAL PROTECTION AGENCY
40 CFR Part 52
[EPA-R04-OAR-2015-0518; FRL-9944-50-Region 4]
Air Plan Approval; North Carolina; Regional Haze
AGENCY: Environmental Protection Agency.
ACTION: Proposed rule.
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SUMMARY: The Environmental Protection Agency (EPA) is proposing to
approve a revision to North Carolina's regional haze State
Implementation Plan (SIP), submitted by the North Carolina Department
of Environment and Natural Resources (NC DENR) on October 31, 2014,
that relies on an alternative to Best Available Retrofit Technology
(BART) to satisfy BART requirements for electric generating units
(EGUs) formerly subject to the Clean Air Interstate Rule (CAIR). EPA
also proposes to find that final approval of this SIP revision would
correct the deficiencies that led to EPA's limited disapproval of the
State's regional haze SIP on June 7, 2012, and proposes to convert
EPA's June 27, 2012, limited approval to a full approval. This
submittal addresses the requirements of the Clean Air Act (CAA or Act)
and EPA's rules that require states to prevent any future, and remedy
any existing, manmade impairment of visibility in mandatory Class I
areas caused by emissions of air pollutants from numerous sources
located over a wide geographic area (also referred to as the regional
haze program). States are required to assure reasonable progress toward
the national goal of achieving natural visibility conditions in Class I
areas.
DATES: Written comments must be received on or before April 26, 2016.
ADDRESSES: Submit your comments, identified by Docket ID No. EPA-R04-
OAR-2015-0518 at https://www.regulations.gov. Follow the online
instructions for submitting comments. Once submitted, comments cannot
be edited or removed from Regulations.gov. EPA may publish any comment
received to its public docket. Do not submit electronically any
information you consider to be Confidential Business Information (CBI)
or other information whose disclosure is restricted by statute.
Multimedia submissions (audio, video, etc.) must be accompanied by a
written comment. The written comment is considered the official comment
and should include discussion of all points you wish to make. 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, the full EPA public comment
policy, information about CBI or multimedia submissions, and general
guidance on making effective comments, please visit https://www2.epa.gov/dockets/commenting-epa-dockets.
FOR FURTHER INFORMATION CONTACT: Michele Notarianni, Air Regulatory
Management Section, Air Planning and Implementation Branch, Air,
Pesticides and Toxics Management Division, U.S. Environmental
Protection Agency, Region 4, 61 Forsyth Street SW., Atlanta, Georgia
30303-8960. Ms. Notarianni can be reached by telephone at (404) 562-
9031 or via electronic mail at Notarianni.Michele@epa.gov.
SUPPLEMENTARY INFORMATION:
Table of Contents
I. Background for EPA's Proposed Action
A. Overview of the Regional Haze Rule
Regional haze is visibility impairment that is produced by a
multitude of sources and activities which are located across a broad
geographic area and emit fine particles (e.g., sulfates, nitrates,
organic carbon, elemental carbon, and soil dust) and their precursors
(e.g., sulfur dioxide (SO2), nitrogen oxides
(NOX), and in some cases, ammonia and volatile organic
compounds). Fine particle precursors react in the atmosphere to form
fine particulate matter (PM2.5) which impairs visibility by
scattering and absorbing light. Visibility impairment reduces the
[[Page 19520]]
clarity, color, and visible distance that one can see.
In section 169A of the 1977 Amendments to the CAA, Congress created
a program for protecting visibility in the nation's national parks and
wilderness areas. This section of the CAA establishes as a national
goal the ``prevention of any future, and the remedying of any existing,
impairment of visibility in mandatory Class I Federal areas (Class I
areas) which impairment results from manmade air pollution.'' It also
directs states to evaluate the use of retrofit controls at certain
larger, often uncontrolled, older stationary sources in order to
address visibility impacts from these sources. Specifically, section
169A(b)(2)(A) of the CAA requires states to revise their SIPs to
contain such measures as may be necessary to make reasonable progress
towards the national visibility goal, including a requirement that
certain categories of existing major stationary sources built between
1962 and 1977 (known as ``BART-eligible'' sources) procure, install,
and operate BART. In the 1990 CAA Amendments, Congress amended the
visibility provisions in the CAA to focus attention on the problem of
regional haze.
In 1999, EPA promulgated the Regional Haze Rule, which requires
states to develop and implement SIPs to ensure reasonable progress
toward improving visibility in Class I areas by reducing emissions that
cause or contribute to regional haze. See 64 FR 35713 (July 1, 1999).
The Regional Haze Rule requires each state, the District of Columbia,
and the Virgin Islands to each submit a regional haze SIP no later than
December 17, 2007. Under 40 CFR 51.308(e), the SIP must contain
emission limitations representing BART and schedules for compliance
with BART for each BART-eligible source, unless the SIP demonstrates
that an emissions trading program or other alternative (BART
Alternative) will achieve greater reasonable progress toward natural
visibility conditions than would have resulted from the installation
and operation of BART at all sources subject to BART and covered by the
BART Alternative. An approvable BART Alternative must meet the criteria
in 40 CFR 51.308(e)(2) as described in section II.B, below.
CAA Section 169A and the Regional Haze Rule require states to
establish a long-term strategy for making reasonable progress toward
meeting the national goal of achieving natural visibility conditions in
Class I areas. The long-term strategy is the compilation of all
enforceable emission limitations, compliance schedules, and other
measures as necessary for a state to meet applicable reasonable
progress goals during an implementation period. For the first
implementation period, the long-term strategy includes BART as well as
any other controls necessary to ensure reasonable progress.
B. North Carolina's Regional Haze SIP
North Carolina submitted its regional haze SIP on December 17,
2007, the regional haze SIP submittal deadline. Fully consistent with
EPA's regulations at the time, the SIP relied on CAIR to satisfy
NOX and SO2 BART requirements for CAIR-subject
EGUs in the State and to partially satisfy the requirement for a long-
term strategy sufficient to achieve the state-adopted reasonable
progress goals.
CAIR, promulgated in 2005, required 27 states and the District of
Columbia to reduce emissions of NOX and SO2 that
significantly contribute to, or interfere with maintenance of, the 1997
national ambient air quality standards (NAAQS) for fine particulates
and for ozone in any downwind state. CAIR imposed specified emissions
reduction requirements on each affected state and established an EPA-
administered cap and trade program for EGUs that states could join as a
means to meet these requirements.
EPA demonstrated that CAIR achieved greater reasonable progress
toward the national visibility goal than BART for NOX and
SO2 at BART-eligible EGUs in CAIR affected states, and the
Agency revised the Regional Haze Rule to provide that states
participating in CAIR's cap-and-trade program need not require affected
BART-eligible EGUs to install, operate, and maintain BART for emissions
of SO2 and NOx. See 70 FR 39104 (July 6, 2005). As a result,
a number of states in the CAIR region designed their regional haze SIPs
to rely on CAIR as an alternative to NOx and SO2 BART for
CAIR-subject EGUs. These states also relied on CAIR as an element of a
long-term strategy for achieving their reasonable progress goals.
The United States Court of Appeals for the District of Columbia
Circuit (D.C. Circuit) initially vacated CAIR in 2008,\1\ but
ultimately remanded the rule to EPA without vacatur to preserve the
environmental benefits provided by CAIR.\2\ On August 8, 2011, acting
on the D.C. Circuit's remand, EPA promulgated the Cross-State Air
Pollution Rule (CSAPR) to replace CAIR and thus to address the
interstate transport of emissions contributing to nonattainment and
interfering with maintenance of the two air quality standards covered
by CAIR as well as the 2006 PM2.5 NAAQS.\3\ See 76 FR 48208.
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\1\ North Carolina v. EPA, 531 F.3d 896 (D.C. Cir. 2008).
\2\ North Carolina v. EPA, 550 F.3d 1176 (D.C. Cir. 2008).
\3\ Although a number of parties challenged the legality of
CSAPR and the D.C. Circuit initially vacated and remanded CSAPR to
EPA in EME Homer City Generation, L.P. v. EPA, 696 F.3d 7, 38 (D.C.
Cir. 2012), the United States Supreme Court reversed the D.C.
Circuit's decision on April 29, 2014, and remanded the case to the
D.C. Circuit to resolve remaining issues in accordance with the high
court's ruling. EPA v. EME Homer City Generation, L.P., 134 S. Ct.
1584 (2014). On remand, the D.C. Circuit affirmed CSAPR in most
respects and CSAPR is now in effect. EME Homer City Generation, L.P.
v. EPA, 795 F.3d 118 (D.C. Cir. 2015).
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Due to CAIR's status as a temporary measure following the D.C.
Circuit's 2008 ruling, EPA could not fully approve regional haze SIP
revisions to the extent that they relied on CAIR to satisfy the BART
requirement and the requirement for a long-term strategy sufficient to
achieve the state-adopted reasonable progress goals. On these grounds,
EPA finalized a limited disapproval of North Carolina's regional haze
SIP on June 7, 2012, triggering the requirement for EPA to promulgate a
FIP unless North Carolina submitted and EPA approved a SIP revision
that corrected the deficiency. See 77 FR 33642. EPA finalized a limited
approval of North Carolina's regional haze SIP on June 27, 2012, as
meeting the remaining applicable regional haze requirements set forth
in the CAA and the Regional Haze Rule. See 77 FR 38185.
II. Analysis of North Carolina's Regional Haze SIP Submittal
On October 31, 2014, NC DENR submitted a revision to North
Carolina's regional haze SIP to correct the deficiencies identified in
the June 7, 2012, limited disapproval by replacing reliance on CAIR
with reliance on a BART Alternative to satisfy NOx and SO2
BART requirements for EGUs formerly subject to CAIR. EPA is proposing
to approve this SIP revision because EPA is proposing to determine that
the BART Alternative contained therein meets the requirements of 40 CFR
51.308(e)(2) and that final approval of this SIP revision would correct
the deficiencies that led to EPA's limited disapproval of the State's
regional haze SIP.
A. North Carolina's BART Alternative
North Carolina's October 31, 2014, SIP revision relies on the
State's Clean Smokestacks Act (CSA) as a BART Alternative for
NOX and SO2 at the BART-eligible EGUs formerly
covered by CAIR. North Carolina enacted the
[[Page 19521]]
CSA in 2002 to improve air quality by imposing firm caps on the total
annual emissions of NOx and SO2 from 42 coal-fired EGUs at
the 14 power plants identified in Table 1, below, operated by Duke
Energy Progress, LLC (Progress Energy) and Duke Energy Carolinas, LLC
(Duke Energy).\4\ The CSA requires Duke Energy EGUs and Progress Energy
EGUs to reduce SO2 emissions to 150,000 tons and 100,000
tons, respectively, by the end of 2009 and to further reduce
SO2 emissions to 80,000 tons and 50,000 tons, respectively,
by the end of 2013. The CSA limits NOx emissions from Duke Energy EGUs
and Progress Energy EGUs to 35,000 tons and 25,000 tons, respectively,
beginning on January 1, 2007, and tightens the emissions cap on Duke
Energy EGUs to 31,000 tons as of January 1, 2009. Collectively, the
caps require these utilities to: (1) Reduce actual emissions of
NOX from 245,000 tons in 1998 to 56,000 tons by 2009 (a 77
percent reduction), and (2) reduce actual SO2 emissions from
489,000 tons in 1998 to 250,000 tons by 2009 (a 49 percent reduction)
and to 130,000 tons by 2013 (a 73 percent reduction).
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\4\ More information on the CSA regulation can be found at
https://daq.state.nc.us/news/leg/cleanstacks.shtml. At the time that
the CSA was enacted, the Progress Energy units were owned by
Progress Energy Carolinas, Inc. and the Duke Energy units were owned
by Duke Power.
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Duke Energy and Progress Energy must meet the CSA emission caps
through actual reductions. The CSA does not allow these units to buy or
trade emissions credits (also referred to as ``allowances'') under
CSAPR to meet these caps even though each utility may decide how to
allocate emission reductions across its affected units.\5\ Furthermore,
any CSAPR allowances in excess of the CSA emissions caps must be
surrendered to the North Carolina State Treasurer thereby preventing
the transfer of these allowances to EGUs located in other states within
the CSAPR trading program.\6\ EPA approved the CSA emissions caps into
North Carolina's SIP on September 26, 2011. See 76 FR 59250.
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\5\ The CSA also prohibited the purchase and trade of CAIR
credits to meet the CSA caps when CAIR was in effect. Allowances
cannot be traded between the units owned by Progress Energy and
those owned by Duke Energy.
\6\ In 2013, Duke Energy reported an excess of 58,961 CAIR
SO2 allowances and 1,987 CAIR NOx allowances above CSA
emissions limits and Progress Energy reported 78,050 excess CAIR
SO2 allowances. All of these excess allowances have been
verified and transferred to the State.
\7\ This category includes EGUs that were converted from coal to
natural gas.
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Progress Energy and Duke Energy have shut down 22 of the coal-fired
EGUs subject to the CSA and have installed scrubbers to control
SO2 emissions and Selective Catalytic Reduction (SCR) or
Selective Non-catalytic Reduction (SNCR) to control NOX
emissions on all of the currently operating coal-fired EGUs subject to
the CSA in order to meet the emissions caps. Table 1, below, identifies
the retired units and the NOX and SO2 emissions
controls on the operating units.
Table 1--EGUs Subject to the CSA
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Status Facility Parent company * Unit ID BART-eligible NOX Control SO2 Control
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Operating \7\................... Allen.............. Duke............... 1-5 ................... SNCR............... FGD
Asheville.......... Progress........... 1-2 Y.................. SCR................ FGD
Buck............... Duke............... 5-9 ................... SNCR............... **
Belews Creek....... Duke............... 1-2 Y.................. SCR................ FGD
Cliffside.......... Duke............... 5 Y.................. SCR................ FGD
6 ................... SCR................ FGD
Marshall........... Duke............... 1-2, 4 Y.................. SNCR............... FGD
3 SCR................ FGD
Mayo............... Progress........... 1 ................... SCR................ FGD
Roxboro............ Progress........... 1-3 Y.................. SCR................ FGD
4 SCR................ FGD
Retired......................... Cape Fear.......... Progress........... 5-6
Cliffside.......... Duke............... 4
Dan River.......... Duke............... 1-3
Lee................ Progress........... 1-3
Riverbend.......... Duke............... 7-10
Sutton............. Progress........... 3 Y..................
Weatherspoon....... Progress........... 1-3
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* Duke Energy and Progress Energy merged on July 2, 2012.
** Units converted from coal to natural gas.
B. EPA's Evaluation of North Carolina's BART Alternative
The Regional Haze Rule requires that a SIP revision establishing a
BART Alternative include the three elements listed below, and EPA has
evaluated North Carolina's BART Alternative with respect to each of
these elements.
A demonstration that the emissions trading program or
other alternative measure will achieve greater reasonable progress than
would have resulted from the installation and operation of BART at all
sources subject to BART in the state and covered by the alternative
program. See 40 CFR 51.308(e)(2)(i).
A requirement that all necessary emissions reductions take
place during the period of the first long-term strategy for regional
haze. See 40 CFR 51.308(e)(2)(iii).
A demonstration that the emissions reductions resulting
from the alternative measure will be surplus to those reductions
resulting from measures adopted to meet requirements of the CAA as of
the baseline date of the SIP. See 40 CFR 51.308(e)(2)(iv).
EPA seeks comments on its proposed findings under each of these
elements, which are described in detail below.
1. Demonstration That the BART Alternative Will Achieve Greater
Reasonable Progress Than BART
Pursuant to 40 CFR 51.308(e)(2)(i), the state must demonstrate that
the BART Alternative will achieve greater reasonable progress than
would have resulted from the installation and operation of BART at all
sources subject to BART in the state and covered by the alternative
program. This demonstration
[[Page 19522]]
must be based on the five criteria addressed below.
a. List of All BART-Eligible Sources Within the State
Pursuant to 40 CFR 51.308(e)(2)(i)(A), the SIP submission must
include a list of all BART-eligible sources within the state. In its
December 31, 2007, regional haze SIP submittal, North Carolina
identified all 17 BART-eligible sources located in the State. See 77 FR
11858, 11873-11874 (February 28, 2012). Of these 17 sources, six were
subject to CAIR and 11 were non-EGUs. North Carolina determined that
one non-EGU source was subject to BART, nine were exempt from BART, and
one was shut down. See 77 FR 11873, 11874 (February 28, 2012). The
State relied on CAIR to satisfy the NOX and SO2
BART requirements for the 13 BART-eligible EGUs at the six CAIR-subject
sources. EPA approved the State's identification of BART-eligible and
BART-subject sources and the BART determination for the one BART-
subject source not subject to CAIR (Blue Ridge Paper). See 77 FR 38185
(June 27, 2012). EPA issued a limited disapproval of the State's SIP
submittal based on its reliance on CAIR to satisfy NOX and
SO2 BART requirements for certain sources and to satisfy the
long-term strategy requirements of its EGUs. See 77 FR 33642 (June 7,
2012). In its October 31, 2014, SIP revision, the State lists the 13
BART-eligible EGUs impacted by EPA's limited disapproval. Because the
State identified all BART-eligible units in its regional haze SIP and
identified all outstanding BART-eligible units in its BART Alternative
SIP revision, EPA proposes to find that the State has met the
requirement of 40 CFR 51.308(e)(2)(i)(A).
b. List of All BART-Eligible Sources and All Bart Source Categories
Covered by the Alternative Program
Pursuant to 40 CFR 51.308(e)(2)(i)(B), the SIP submission must
include a list of all BART-eligible sources and all BART source
categories covered by the BART Alternative, and each BART-eligible
source in the state must be subject to the requirements of the
alternative program or have a federally enforceable emission limitation
determined by the state and approved by EPA as meeting BART. As
previously mentioned, EPA approved the BART determinations for all
BART-eligible units in North Carolina with the exception of
NOX and SO2 BART for the 13 BART-eligible EGUs
formerly covered by CAIR, and these 13 units are subject to the BART
Alternative. Therefore, EPA proposes to find that the SIP revision
satisfies 40 CFR 51.308(e)(2)(i)(B).
c. Analysis of BART and Associated Emissions Reductions
Pursuant to 40 CFR 51.308(e)(2)(i)(C), the SIP submission must
include an analysis of the best system of continuous emissions control
technology available and associated emission reductions achievable for
each source subject to BART and covered by the alternative program.
This analysis must be conducted by making a BART determination for each
source subject to BART and covered by the alternative program unless
the alternative has been designed to meet a requirement other than
BART. In this latter case, the State may determine the best system of
continuous emissions control technology and associated emission
reductions for similar types of sources within a source category based
on both source-specific and category-wide information, as appropriate.
North Carolina opted to use the simplified approach because North
Carolina created the CSA to meet requirements other than BART.
In using the simplified approach for EGUs, states may estimate the
emissions reductions associated with BART based on an analysis of what
BART is likely to be for similar types of sources within the source
category using the presumptions for EGUs in the Guidelines for BART
Determinations under the Regional Haze Rule located at 40 CFR part 51,
Appendix Y (BART Guidelines). The BART Guidelines contain presumptive
NOX and SO2 emissions limits for EGUs greater
than 200 megawatt (MW) capacity at plants with a total generating
capacity in excess of 750 MW. When a state is estimating the emissions
reductions achievable through BART at the BART-eligible EGUs covered by
the BART Alternative, it should assume that these EGUs would control at
the presumptive level unless the state determines that such
presumptions are not appropriate.
i. SO2 Emissions Reductions
The BART Guidelines specify the presumptive SO2 BART
limit at 95 percent control or 0.15 pounds per million British Thermal
Units (lbs/MMBtu) for uncontrolled EGUs greater than 200 MW at 750 MW
power plants unless an alternative control level is justified. See 40
CFR part 51, App. Y, IV.E.4. North Carolina used this presumptive limit
to calculate SO2 BART emissions by multiplying the limit by
each BART-eligible EGU's 2002 heat input in MMBtu. When compared to
actual 2002 SO2 emissions, the State calculated that BART
would reduce SO2 emissions by 274,668 tons. See Table 3 in
North Carolina's October 31, 2014, submittal.
ii. NOX Emissions Reductions
All of the BART-eligible EGUs subject to the CSA burn bituminous
coal and have either wall-fired or tangential-fired boilers. See Table
1 of the State's October 31, 2014, submittal. The presumptive
NOX emission limits for these EGUs are 0.39 and 0.28 lb/
MMbtu for wall-fired and tangential-fired boilers, respectively, unless
an alternative control level is justified. See 40 CFR part 51, App. Y,
IV.E.5. North Carolina used these presumptive limits to calculate
NOX BART emissions by multiplying the corresponding limits
by each BART-eligible EGU's 2002 heat input in MMBtu. When compared to
actual 2002 NOX emissions, the State calculated that BART
would reduce NOX emissions by 19,364 tons. See Table 8 in
North Carolina's October 31, 2014, submittal.
d. Analysis of Emissions Reductions Associated With the BART
Alternative
Pursuant to 40 CFR 51.308(e)(2)(i)(D), the SIP submission must
include an analysis of the projected emissions reductions achievable
through the BART Alternative. North Carolina projected these reductions
using four different methods: (1) CSA emissions caps; (2) 2018
emissions projected by the Visibility Improvement--State and Tribal
Association of the Southeast (VISTAS) \8\ and presented in North
Carolina's December 17, 2007, regional haze SIP submission; (3) 2018
emissions projected by EPA's Integrated Planning Model (IPM); and (4)
2018 emissions projected by Duke Energy after the merger with Progress
Energy. North Carolina also evaluated actual emissions reductions from
the CSA units by comparing 2009, 2010, 2011, 2012, and 2013 emissions
to 2002 levels. Table 2 shows the emissions reductions associated with
the BART Alternative using the CSA caps and 2018
[[Page 19523]]
projections identified above, and Tables 3 and 4 show the reductions
using actual emissions from 2009-2015.
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\8\ VISTAS is a collaborative effort of state governments,
tribal governments, and various Federal agencies established to
initiate and coordinate activities associated with the management of
regional haze, visibility, and other air quality issues in the
southeastern United States. Member state and tribal governments
include: Alabama, Florida, Georgia, Kentucky, Mississippi, North
Carolina, South Carolina, Tennessee, Virginia, West Virginia, and
the Eastern Band of the Cherokee Indians.
Table 2--BART Alternative Emissions Reductions (Tons) From 2002 Baseline Using CSA Caps and 2018 Projections
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Pollutant 2002 Baseline CSA Cap 2018 VISTAS 2018 IPM 2018 Duke
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Emissions................................. SO2......................... 467,321 130,000 89,343 24,732 23,901
Reductions from Baseline.................. ............................ .............. 337,321 377,978 442,589 443,420
Emissions................................. NOX......................... 142,879 56,000 42,133 22,792 22,414
Reductions from Baseline.................. ............................ .............. 86,879 100,746 120,087 120,465
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Table 3--BART Alternative Emissions Reductions From 2002 Baseline Using Actual Emissions (Tons)--SO2
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2002 Baseline 2009 Actuals 2010 Actuals 2011 Actuals 2012 Actuals 2013 Actuals
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Emissions................................. 467,321..................... 110,818 116,529 73,457 53,458 42,080
Reductions from Baseline.................. ............................ 356,503 350,792 393,864 413,863 425,241
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Table 4--BART Alternative Emissions Reductions From 2002 Baseline Using Actual Emissions (Tons)--NOX
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2002 Baseline 2009 Actuals 2010 Actuals 2011 Actuals 2012 Actuals 2013 Actuals
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Emissions................................. 142,879..................... 37,829 47,373 39,361 42,147 40,410
Reductions from Baseline.................. ............................ 105,050 95,506 103,518 100,732 102,469
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i. CSA Caps
Under the CSA, Duke Energy EGUs and Progress Energy EGUs were
required to reduce SO2 emissions to 150,000 tons and 100,000
tons, respectively, by the end of 2009 and to further reduce
SO2 emissions to 80,000 tons and 50,000 tons, respectively,
by the end of 2013. Using the 2013 emissions caps, the BART Alternative
would reduce SO2 emissions by 337,321 tons from 2002 levels.
The CSA limited NOX emissions from Duke Energy EGUs and
Progress Energy EGUs to 35,000 tons and 25,000 tons, respectively,
beginning on January 1, 2007, and tightened the emissions cap on Duke
Energy EGUs to 31,000 tons as of January 1, 2009. Using the 2009
emissions caps, the BART Alternative would reduce NOX
emissions by 86,879 tons from 2002 levels.
ii. 2018 Projections
VISTAS developed 2018 emissions projections for the states in the
VISTAS region to use when preparing the states' regional haze SIP
submissions. VISTAS accounted for the CSA emissions caps and other
control programs, including CAIR, in its 2018 modeling and projected
total NOX and SO2 emissions from North Carolina's
EGUs at 42,133 tons and 89,343 tons, respectively. See 77 FR 11866
(February 28, 2012). North Carolina compared these 2018 VISTAS
emissions projections for the CSA units with 2002 actual emissions and
estimated that NOX and SO2 emissions from these
units would decrease by 100,746 tons and 377,978 tons, respectively.
The projected NOX and SO2 emissions reductions
from only the BART-eligible sources in the CSA would be 69,485 tons and
276,998 tons, respectively.
North Carolina also included EPA IPM modeling year 2018
NOX and SO2 emissions estimates for the CSA EGUs.
The IPM predicted that these units would emit approximately 22,792 tons
of NOXemissions in 2018, resulting in a projected reduction
of 120,087 tons when compared with 2002 actual emissions. The IPM also
predicted 24,732 tons of SO2 emissions from these units in
2018, resulting in a projected reduction of 442,589 tons compared to
2002 actual emissions. These predictions are well below VISTAS' 2018
projections and the CSA emissions caps.
Following the merger with Progress Energy, Duke Energy projected
2018 emissions for its EGUs in North Carolina due to the significant
shift from coal to natural gas and the retirement of several EGUs in
the State. These estimates were prepared by Duke Energy based on its
economic modeling, and they differ only slightly from the IPM forecast.
The primary difference between the Duke Energy and IPM estimates is
that EPA assumed in the IPM that the Allen facility's coal-fired EGUs
would be shut down by 2018.\9\ Duke Energy projected that the CSA units
would emit approximately 22,414 tons of NOX and 23,901 tons
of SO2 in 2018, a reduction of approximately 120,465 and
443,420 tons of NOX and SO2, respectively, from
2002 levels, respectively.
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\9\ Duke Energy must retire Allen Units 1 and 2 by December 31,
2024, pursuant to a consent decree entered by the United States
District Court for the Middle District of North Carolina on October
20, 2015. Consent Decree, United States, et al. v. Duke Energy
Corporation, Civil Case No. 1:00-cv-1262 (M.D.N.C. October 20,
2015).
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iii. Actual Emissions Reductions
North Carolina analyzed actual emissions reductions achieved with
the CSA for each year from 2009 to 2013 using emissions reported to
EPA's Clean Air Markets Division. North Carolina started with 2009
because this is the year when Duke Energy and Progress Energy were
required to comply with the CSA's first SO2 cap and the
final NOX cap. Emissions of SO2 steadily
decreased from 116,529 tons in 2010 to 42,080 tons in 2013. Actual
NOX emissions ranged from 47,373 tons in 2010 to 40,410 tons
in 2013. See Tables 6 and 11 in North Carolina's October 31, 2014,
submittal for actual emissions by CSA facility.
e. Determination That the BART Alternative Achieves Greater Reasonable
Progress Than BART
Pursuant to 40 CFR 51.308(e)(2)(i)(E), the state must provide a
determination that the alternative achieves greater reasonable progress
than BART under 40 CFR 51.308(e)(3) or otherwise based on the clear
weight of evidence. 40 CFR
[[Page 19524]]
51.308(e)(3) provides two different tests for determining whether the
alternative achieves greater reasonable progress than BART. Under the
first test, if the distribution of emissions is not substantially
different than under BART, and the alternative measure results in
greater emission reductions, then the alternative measure may be deemed
to achieve greater reasonable progress. If the distribution of
emissions is significantly different, however, then the state must use
the second test and conduct dispersion modeling to determine
differences in visibility between BART and the alternative program for
each impacted Class I area, for the worst and best 20 percent of days.
See 40 CFR 51.308(e)(3). The modeling would demonstrate ``greater
reasonable progress'' if: (1) Visibility does not decline in any Class
I area, and (2) there is an overall improvement in visibility,
determined by comparing the average differences between BART and the
alternative over all affected Class I areas. North Carolina did not
provide dispersion modeling because it believes that greater reasonable
progress can be shown through an emissions reduction analysis under the
first 40 CFR 51.308(e)(3) test and/or through a weight-of-evidence
analysis based on the types of controls installed on the BART-eligible
CSA units, the reductions in visibility impairing pollutants associated
with the CSA, and the uniform nature of these reductions across all
EGUs subject to the CSA.
EPA proposes to determine that the CSA achieves greater reasonable
progress than would be achieved through the installation and operation
of BART at the BART-eligible EGUs covered by the CSA based on the
following weight of evidence.
First, BART would result in controls for NOX and
SO2 only at the 13 BART-eligible EGUs, whereas the BART
Alternative applies to 42 EGUs. Of these 42 EGUs, 17 have retired, five
have converted from coal to natural gas, and the remaining 20 coal-
fired EGUs in operation are controlled for NOX and
SO2.
Second, the 20 operating coal-fired EGUs in the BART Alternative
have installed emissions controls to meet the CSA that are, with the
exception of NOX control at Allen Units 1-5 and Marshall
Units 1, 2, and 4, the most stringent controls available for
SO2 and NOX. All of the CSA EGUs use flue gas
desulphurization (i.e., scrubbers) to remove SO2.
SO2 controls are of particular importance because, as North
Carolina demonstrated in its regional haze SIP, sulfates are the major
contributor to PM2.5 mass and visibility impairment at Class
I areas in the VISTAS region and in states neighboring this region.\10\
See 77 FR 11867, 11877 (February 28, 2012). Thus, North Carolina
concluded that reducing SO2 emissions from EGU and non-EGU
point sources in the VISTAS states would have the greatest visibility
benefits for the North Carolina Class I areas and the Class I areas
that the State's sources impact. See 77 FR 11868 (February 28, 2012).
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\10\ The VISTAS region includes North Carolina and the two
states, Virginia and Tennessee, that North Carolina identified as
having a Class I area potentially impacted by its sources.
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Regarding NOX, all of the CSA-subject EGUs in operation
are using SCR for post-combustion NOX control, with the
exception of Allen Units 1-5 (not BART-eligible) and Marshall Units 1,
2, and 4 (BART-eligible) that use SNCR. Although SCR is the most
stringent NOX control technology available for EGU
retrofits, it is unlikely that a BART determination would result in the
installation of SCR at Marshall Units 1, 2, and 4 given the EGUs'
NOX emissions, the distance from Class I areas, the cost of
replacing SNCR with SCR, and the incremental visibility improvement
associated with the switch from SNCR to SCR. As discussed in North
Carolina's 2007 regional haze SIP submittal, nitrates are a relatively
small contributor to PM2.5 mass and visibility impairment on
the 20 percent worst days at the inland Class I areas in VISTAS, which
include all of the North Carolina Class I areas except for the
Swanquarter National Wilderness Area. Therefore, the visibility
benefits of reducing NOX emissions at these Class I areas
are small. See 77 FR 11868 (February 28, 2012).
Third, the emissions reductions under the BART Alternative are
greater than those that would result from the installation and
operation of BART at the BART-eligible EGUs covered by the CSA under a
variety of scenarios.\11\ As discussed in section II.B.1.c, above,
North Carolina compared CSA emissions to BART emissions using the CSA
caps, 2018 emissions projections prepared by VISTAS, IPM, and Duke
Energy, and actual NOX and SO2 emissions. Only
the emission reductions required by the CSA cap are federally
enforceable by virtue of being included in North Carolina's SIP. North
Carolina's calculations of emission reductions relative to the various
projections provide additional information and support for its
assertion that the BART Alternative achieves greater reasonable
progress than BART. Tables 5 through 7, below, identify the additional
emissions reductions achieved through the BART Alternative.
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\11\ As discussed above, North Carolina used EPA's presumptive
limits for NOX and SO2 as the BART benchmark.
Table 5--BART Alternative Emissions Reductions Beyond BART Using CSA Caps and 2018 Projections (Tons)
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Pollutant BART CSA cap 2018 VISTAS 2018 IPM 2018 Duke
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Reductions from 2002 Baseline............. SO2......................... 274,668 337,321 377,978 442,589 443,420
Reductions beyond BART.................... ............................ .............. 62,653 103,310 167,921 168,752
Reductions from 2002 Baseline............. NOX......................... 19,364 86,879 100,746 120,087 120,465
Reductions beyond BART.................... ............................ .............. 67,515 81,382 100,723 101,101
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Table 6--BART Alternative Emissions Reductions Beyond BART Using Actual Emissions (Tons)--SO2
--------------------------------------------------------------------------------------------------------------------------------------------------------
BART 2009 Actuals 2010 Actuals 2011 Actuals 2012 Actuals 2013 Actuals
--------------------------------------------------------------------------------------------------------------------------------------------------------
Reductions from 2002 Baseline........................... 274,668 356,503 350,791 393,864 413,862 425,241
Reductions beyond BART.................................. .............. 81,835 76,123 119,196 139,194 150,573
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[[Page 19525]]
Table 7--BART Alternative Emissions Reductions Beyond BART Using Actual Emissions (Tons)-- NOX
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BART 2009 Actuals 2010 Actuals 2011 Actuals 2012 Actuals 2013 Actuals
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Reductions from 2002 Baseline........................... 19,364 105,049 95,506 103,518 100,732 102,468
Reductions beyond BART.................................. .............. 85,685 76,142 84,154 81,368 83,104
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Compared with BART, North Carolina's current CSA caps achieve an
additional SO2 reduction of 62,653 tons and an additional
NOX reduction of 67,515 tons relative to the 2002 baseline.
Table 5 also shows that, depending on the origin of the 2018
projections, the BART Alternative results in an additional
SO2 reduction of 103,310 to 168,752 tons and an additional
NOX reduction of 81,382 to 101,101 tons beyond BART. The
comparison of actual emissions under the BART Alternative to estimated
BART emissions in Tables 6 and 7 shows that, between 2009 and 2013, the
CSA achieved 76,123 to 150,573 tons of additional SO2
reductions and 76,142 to 84,154 tons of additional NOX
reductions beyond BART. Regardless of the reduction scenario, the BART
Alternative results in significantly lower NOX and
SO2 emissions when compared to BART.
Fourth, the NOX and SO2 emissions controls
needed to comply with CSA requirements began operating before any
controls would begin operation under BART. BART must be installed and
operated as expeditiously as practicable, but no later than five years
after the date of EPA approval of the regional haze SIP. See CAA
section 169A(g)(4); 40 CFR 51.308(e)(1)(iv). The CSA, enacted in 2002,
required compliance with the initial emissions caps for SO2
in 2007 and NOX in 2009, and therefore resulted in emissions
reductions before EPA issued a limited approval of North Carolina's
regional haze SIP on June 27, 2012. See 77 FR 38185. Even if EPA had
approved source-specific BART determinations for the CAIR-subject units
in North Carolina at that time, the BART installation and operation
deadline would have been set after compliance with the CSA began.
Lastly, although the CSA does allow for limited emissions shifting,
there is no indication that implementation of the CSA would result in
any ``hot spots,'' as compared to BART. The shifting of emissions under
the CSA is limited by the prohibition on emissions credit trading
between the EGUs owned by Progress Energy and those owned by Duke
Energy before the 2012 merger, as mentioned above. Additionally, the
2009-2013 SO2 and NOX emissions data summarized
in Tables 6 and 11, respectively, of North Carolina's submittal
indicate that emissions have not shifted to any significant degree
between the EGUs subject to the CSA during this time period. Emissions
reductions were taking place at each EGU facility and not isolated to
any one facility or group of facilities. To the extent that any
shifting might occur in the future, all of the operating Progress
Energy units subject to the CSA operate with the most stringent
NOX and SO2 control equipment, and all of the
Duke Energy units subject to the CSA operate with the most stringent
NOX and SO2 controls with the exception of Allen,
Marshall, and Buck which operate SNCR. Of the SNCR units, only Marshall
is BART-eligible. Even assuming that a BART analysis would result in a
requirement to install SCR at Marshall, any shifting of emissions to
Marshall would be restricted by its available capacity. Furthermore,
any incremental decrease in NOX emissions if the State were
to require SCR at Marshall would not be expected to have a significant
impact on visibility at Class I areas due, in part, to the fact that
nitrates are a relatively small contributor to PM2.5 mass
and visibility impairment on the 20 percent worst days at the Class I
areas in closest proximity to Marshall.
Based on the evidence provided above, EPA proposes to find that the
BART Alternative achieves greater reasonable progress than BART and
thus satisfies the requirements of 40 CFR 51.308(e)(2)(i)(E).
2. Requirement That Emissions Reductions Occur During the First
Implementation Period
Pursuant to 40 CFR 51.308(e)(2)(iii), the state must ensure that
all necessary emission reductions take place during the period of the
first long-term strategy for regional haze (i.e., by December 31,
2018). The Regional Haze Rule further provides that, to meet this
requirement, the state must provide a detailed description of the
alternative measure, including schedules for implementation, the
emission reductions required by the program, all necessary
administrative and technical procedures for implementing the program,
rules for accounting and monitoring emissions, and procedures for
enforcement. Id. EPA proposes to find that the BART Alternative meets
this requirement because the State has fully described the CSA, the CSA
prescribes emissions reductions through the use of emissions caps, the
emissions caps are in effect and incorporated into North Carolina's
SIP, and all CSA-subject EGUs are required to meet the accounting and
monitoring requirements of CSAPR.\12\ Furthermore, all CSA-related
permitting and construction activities have been completed to meet the
CSA emissions caps. EPA therefore proposes to find that North Carolina
has satisfied the requirements of 40 CFR 51.308(e)(2)(iii).
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\12\ See 76 FR 48208 (August 8, 2011).
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3. Demonstration That Emissions Reductions Are Surplus
Pursuant to 40 CFR 51.308(e)(2)(iv), the SIP must demonstrate that
the emissions reductions resulting from the alternative measure will be
surplus to those reductions resulting from measures adopted to meet
requirements of the CAA as of the baseline date of the SIP. The
baseline date for regional haze SIPs is 2002, and the first
NOX and SO2 CSA emissions caps were not effective
until 2007 and 2009, respectively. See 64 FR 35742. Therefore, EPA
proposes to find that the reductions associated with the CSA are
surplus in accordance with 40 CFR 51.308(e)(2)(iv).
B. Reasonable Progress Evaluation
EPA finalized a limited disapproval of North Carolina's regional
haze SIP based on its reliance on CAIR to satisfy the BART requirement
and the requirement for a long-term strategy sufficient to achieve the
state-adopted reasonable progress goals. See 77 FR 33653. In that
action, EPA also finalized limited disapprovals of a number of other
states' regional haze SIPs that relied on CAIR to satisfy these
requirements and finalized Federal Implementation Plans (FIPs) that
substituted reliance on CSAPR for reliance on CAIR for several states.
Id. However, North Carolina's 2014 regional haze SIP submission relies
on the CSA, rather than CSAPR, to correct the deficiencies in its
regional haze SIP. EPA therefore must evaluate whether inclusion of the
CSA in lieu of CAIR in the state's long-term strategy is sufficient to
ensure reasonable progress.
As discussed in section II.B.1.e, sulfates are the major
contributor to visibility impairment at Class I areas in
[[Page 19526]]
the VISTAS region. Based on its conclusion that SO2
reductions would result in the greatest visibility improvements, North
Carolina's 2007 regional haze SIP submission focused its reasonable
progress control analysis on emission units that fall within the
SO2 area of influence of any Class I area, as modeled by
VISTAS, and have a one percent or greater contribution to the sulfate
visibility impairment in at least one Class I area. See 77 FR 11869.
Sixteen EGUs subject to the CSA and formerly subject to CAIR met North
Carolina's reasonable process screening criteria. The State
subsequently concluded in its regional haze SIP submission that no
additional controls beyond CAIR and the CSA were reasonable for these
units during the first implementation period. See 77 FR 11870, 11872.
North Carolina's long-term strategy relied, in part, on this
conclusion.
Ten of the 16 aforementioned units have shut down or converted to
natural gas. The remaining coal-fired units have each installed FGD to
comply with the CSA. Given North Carolina's focus on reducing
SO2 emissions to achieve reasonable progress and the fact
that coal-fired EGUs remaining in operation are already subject to the
most stringent SO2 controls available, EPA proposes to find
that no additional controls are necessary for these units to achieve
reasonable progress during the first implementation period. This
proposed finding and the proposed finding that North Carolina's BART
Alternative meets the requirements of the Regional Haze Rule form the
basis for EPA's proposal to convert EPA's limited disapproval of the
State's regional haze SIP to a full approval.
III. Proposed Action
EPA is proposing to find that North Carolina's regional haze SIP
revision meets the applicable requirements of the CAA and Regional Haze
Rule, including the requirement that the BART Alternative achieve
greater reasonable progress than would be achieved through the
installation and operation of BART. EPA also proposes to find that
final approval of this SIP revision would correct the deficiencies that
led to EPA's limited disapproval of the State's regional haze SIP on
June 7, 2012, and proposes to convert the EPA's June 27, 2012, limited
approval to a full approval. These proposed actions, if finalized,
would eliminate the need for EPA to issue a FIP to remedy the
deficiencies in North Carolina's December 17, 2007, SIP submission.
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 Act and applicable
Federal regulations. See 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, these
proposed actions merely approve State law as meeting Federal
requirements and does not impose additional requirements beyond those
imposed by State law. For that reason, these proposed actions:
Are 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);
do not impose an information collection burden under the
provisions of the Paperwork Reduction Act (44 U.S.C. 3501 et seq.);
are 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.);
do 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);
do not have Federalism implications as specified in
Executive Order 13132 (64 FR 43255, August 10, 1999);
are not an economically significant regulatory action
based on health or safety risks subject to Executive Order 13045 (62 FR
19885, April 23, 1997);
are not a significant regulatory action subject to
Executive Order 13211 (66 FR 28355, May 22, 2001);
are not subject to requirements of Section 12(d) of the
National Technology Transfer and Advancement Act of 1995 (15 U.S.C. 272
note) because application of those requirements would be inconsistent
with the Clean Air Act; and
do 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).
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 as specified by Executive Order 13175 (65
FR 67249, November 9, 2000), nor will it impose substantial direct
costs on tribal governments or preempt tribal law.
List of Subjects in 40 CFR Part 52
Environmental protection, Air pollution control, Carbon mo
NOX ide, Incorporation by reference, Intergovernmental
relations, Nitrogen dioxide, Ozone, Particulate matter, Reporting and
recordkeeping requirements, Sulfur oxides, Volatile organic compounds.
Authority: 42 U.S.C. 7401 et seq.
Dated: March 25, 2016.
Heather McTeer Toney,
Regional Administrator, Region 4.
[FR Doc. 2016-07670 Filed 4-4-16; 8:45 am]
BILLING CODE 6560-50-P