82_FR_45669 82 FR 45481 - Interstate Transport of Fine Particulate Matter: Revision of Federal Implementation Plan Requirements for Texas

82 FR 45481 - Interstate Transport of Fine Particulate Matter: Revision of Federal Implementation Plan Requirements for Texas

ENVIRONMENTAL PROTECTION AGENCY

Federal Register Volume 82, Issue 188 (September 29, 2017)

Page Range45481-45497
FR Document2017-20832

The Environmental Protection Agency (EPA) is finalizing withdrawal of the federal implementation plan (FIP) provisions that require affected electricity generating units (EGUs) in Texas to participate in Phase 2 of the Cross-State Air Pollution Rule (CSAPR) trading programs for annual emissions of sulfur dioxide (SO<INF>2</INF>) and nitrogen oxides (NO<INF>X</INF>). Withdrawal of the FIP requirements is intended to address a decision of the U.S. Court of Appeals for the District of Columbia Circuit (D.C. Circuit) remanding the CSAPR Phase 2 SO<INF>2</INF> budget for Texas to the EPA for reconsideration. With this action, the EPA is also determining that, following withdrawal of the FIP requirements, sources in Texas do not contribute significantly to nonattainment in, or interfere with maintenance by, any other state with regard to the 1997 national ambient air quality standard (NAAQS) for fine particulate matter (PM<INF>2.5</INF>). Accordingly, we are also determining that the EPA has no obligation to issue new FIP requirements for Texas sources to address transported PM<INF>2.5</INF> pollution under Clean Air Act (CAA) section 110(a)(2)(D)(i)(I) with regard to that NAAQS. Finally, the EPA is also affirming the continued validity of the Agency's 2012 determination that participation in CSAPR meets the Regional Haze Rule's criteria for an alternative to the application of source- specific best available retrofit technology (BART). The EPA has determined that changes to CSAPR's geographic scope resulting from the actions EPA has taken or expects to take in response to the D.C. Circuit's remand do not affect the continued validity of participation in CSAPR as a BART alternative, because the changes in geographic scope would not have adversely affected the results of the air quality modeling analysis upon which the EPA based the 2012 determination.

Federal Register, Volume 82 Issue 188 (Friday, September 29, 2017)
[Federal Register Volume 82, Number 188 (Friday, September 29, 2017)]
[Rules and Regulations]
[Pages 45481-45497]
From the Federal Register Online  [www.thefederalregister.org]
[FR Doc No: 2017-20832]


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ENVIRONMENTAL PROTECTION AGENCY

40 CFR Part 52

[EPA-HQ-OAR-2016-0598; FRL-9968-46-OAR]
RIN 2060-AT16


Interstate Transport of Fine Particulate Matter: Revision of 
Federal Implementation Plan Requirements for Texas

AGENCY: Environmental Protection Agency (EPA).

ACTION: Final rule.

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SUMMARY: The Environmental Protection Agency (EPA) is finalizing 
withdrawal of the federal implementation plan (FIP) provisions that 
require affected electricity generating units (EGUs) in Texas to 
participate in Phase 2 of the Cross-State Air Pollution Rule (CSAPR) 
trading programs for annual emissions of sulfur dioxide 
(SO2) and nitrogen oxides (NOX). Withdrawal of 
the FIP requirements is intended to address a decision of the U.S. 
Court of Appeals for the District of Columbia Circuit (D.C. Circuit) 
remanding the CSAPR Phase 2 SO2 budget for Texas to the EPA 
for reconsideration. With this action, the EPA is also determining 
that, following withdrawal of the FIP requirements, sources in Texas do 
not contribute significantly to nonattainment in, or interfere with 
maintenance by, any other state with regard to the 1997 national 
ambient air quality standard (NAAQS) for fine particulate matter 
(PM2.5). Accordingly, we are also determining that the EPA 
has no obligation to issue new FIP requirements for Texas sources to 
address transported PM2.5 pollution under Clean Air Act 
(CAA) section 110(a)(2)(D)(i)(I) with regard to that NAAQS. Finally, 
the EPA is also affirming the continued validity of the Agency's 2012 
determination that participation in CSAPR meets the Regional Haze 
Rule's criteria for an alternative to the application of source-
specific best available retrofit technology (BART). The EPA has 
determined that changes to CSAPR's geographic scope resulting from the 
actions EPA has taken or expects to take in response to the D.C. 
Circuit's remand do not affect the continued validity of participation 
in CSAPR as a BART alternative, because the changes in geographic scope 
would not have adversely affected the results of the air quality 
modeling analysis upon which the EPA based the 2012 determination.

DATES: This final rule is effective on September 29, 2017.

ADDRESSES: The EPA has established a docket for this action under 
Docket ID No. EPA-HQ-OAR-2016-0598. All documents in the docket are 
listed and publicly available at http://www.regulations.gov.

FOR FURTHER INFORMATION CONTACT: Questions about the withdrawal of 
CSAPR FIP requirements for Texas EGUs should be directed to David 
Lifland, Clean Air Markets Division, Office of Atmospheric Programs, 
U.S. Environmental Protection Agency, MC 6204M, 1200 Pennsylvania 
Avenue NW., Washington, DC 20460; telephone number: (202) 343-9151; 
email address: [email protected]. Questions about the sensitivity 
analysis regarding CSAPR participation as a BART alternative should be 
directed to Melinda Beaver, Office of Air Quality Planning and 
Standards, U.S. Environmental Protection Agency, 109 T.W. Alexander 
Drive, Mail Code C539-04, Research Triangle Park, NC 27709; telephone 
number: (919) 541-1062; email address: [email protected].

SUPPLEMENTARY INFORMATION: Regulated Entities. Entities regulated under 
CSAPR are fossil fuel-fired boilers and stationary combustion turbines 
that serve generators producing electricity for sale, including 
combined cycle units and units operating as part of systems that 
cogenerate electricity and other useful energy output. Regulated 
categories and entities include:

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                                                 Examples of potentially
            Category              NAICS * code     regulated industries
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Industry.......................          221112  Fossil fuel-fired
                                                  electric power
                                                  generation.
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* North American Industry Classification System.

    This table is not intended to be exhaustive, but rather provides a 
guide for readers regarding entities likely to be regulated. To 
determine whether your facility is affected by this action, you should 
carefully examine the applicability provisions in 40 CFR 97.404 and 
97.704. If you have questions regarding the applicability of CSAPR to a 
particular entity, consult the person listed in the FOR FURTHER 
INFORMATION CONTACT section above.

Table of Contents

I. Overview
II. Background
    A. History and Summary of CSAPR
    B. CSAPR Participation as a BART Alternative
III. Withdrawal of CSAPR FIP Requirements Related to Texas' 
Transport Obligations With Regard to the 1997 Annual 
PM2.5 NAAQS
    A. Summary
    B. Adequacy of Rationale for Finding No Remaining Transport 
Obligation

[[Page 45482]]

    C. Responsiveness to the D.C. Circuit's Remand Instructions
    D. Consistency of Responses To Remand Across States
    E. Consistency of Consideration of D.C. Circuit's Holding Across 
States
    F. Potential Use of Texas FIP Budgets To Address a Different 
PM2.5 NAAQS
IV. Sensitivity Analysis Regarding CSAPR Participation as a BART 
Alternative
    A. Summary
    B. Continued CSAPR Participation by Georgia and South Carolina
    C. Appropriateness of Continued Reliance on Original CSAPR-
Better-than-BART Analysis
    D. Possible Changes in the Geographic Distribution of Emissions
    E. Validity of 2012 Analytic Demonstration Prior to CSAPR 
Changes
V. Description of Amendments to Regulatory Text
VI. Statutory and Executive Order Reviews
    A. Executive Order 12866: Regulatory Planning and Review, and 
Executive Order 13563: Improving Regulation and Regulatory Review
    B. Executive Order 13771: Reducing Regulations and Controlling 
Regulatory Costs
    C. Paperwork Reduction Act
    D. Regulatory Flexibility Act
    E. Unfunded Mandates Reform Act
    F. Executive Order 13132: Federalism
    G. Executive Order 13175: Consultation and Coordination With 
Indian Tribal Governments
    H. Executive Order 13045: Protection of Children from 
Environmental Health and Safety Risks
    I. Executive Order 13211: Actions That Significantly Affect 
Energy Supply, Distribution, or Use
    J. National Technology Transfer Advancement Act
    K. Executive Order 12898: Federal Actions To Address 
Environmental Justice in Minority Populations and Low-Income 
Populations
    L. Congressional Review Act
    M. Judicial Review and Determinations Under CAA Section 
307(b)(1) and (d)

I. Overview

    The EPA promulgated CSAPR in 2011 in order to address the 
obligations of states--and of the EPA when states have not met their 
obligations--under CAA section 110(a)(2)(D)(i)(I) to prohibit air 
pollution contributing significantly to nonattainment in, or 
interfering with maintenance by, any other state with regard to several 
NAAQS, including the 1997 annual PM2.5 NAAQS.\1\ To address 
Texas' transport obligation under CAA section 110(a)(2)(D)(i)(I) with 
regard to this NAAQS, CSAPR established FIP requirements for affected 
EGUs in Texas, including statewide emissions budgets that apply to the 
EGUs' collective annual emissions of SO2 and NOX.
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    \1\ Federal Implementation Plans; Interstate Transport of Fine 
Particulate Matter and Ozone and Correction of SIP Approvals, 76 FR 
48208 (August 8, 2011).
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    In 2012, the EPA promulgated an amendment to the Regional Haze Rule 
allowing a state whose EGUs participate in one of the CSAPR trading 
programs for a given pollutant to rely on its sources' participation in 
CSAPR as an alternative to source-specific BART requirements--the so-
called CSAPR-better-than-BART rule, codified at 40 CFR 51.308(e)(4).\2\ 
This rule relied on a regional analytic demonstration that included an 
air quality modeling analysis comparing the projected visibility 
impacts of CSAPR implementation and BART implementation. To project 
emissions under CSAPR, the EPA assumed that the geographic scope and 
state emissions budgets for CSAPR would be implemented as finalized and 
amended in 2011 and 2012.\3\
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    \2\ Regional Haze: Revisions to Provisions Governing 
Alternatives to Source-Specific Best Available Retrofit Technology 
(BART) Determinations, Limited SIP Disapprovals, and Federal 
Implementation Plans, 77 FR 33642 (June 7, 2012).
    \3\ CSAPR was amended three times in 2011 and 2012 to add five 
states to the seasonal NOX program and to increase 
certain state budgets. 76 FR 80760 (December 27, 2011); 77 FR 10324 
(February 21, 2012); 77 FR 34830 (June 12, 2012). The CSAPR-better-
than-BART final rule reflected consideration of these changes to 
CSAPR.
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    In July 2015, the D.C. Circuit issued a decision on a range of 
challenges to CSAPR in EME Homer City Generation, L.P. v. EPA (EME 
Homer City II), denying most claims but remanding several CSAPR 
emissions budgets to the EPA for reconsideration, including the Phase 2 
SO2 budget for Texas.\4\ Because the remand created the 
potential for changes in the geographic scope and stringency of CSAPR 
as evaluated for purposes of the 2012 comparison to BART 
implementation, the EPA recognizes that how the Agency addresses the 
remand could raise questions as to whether states and the EPA should 
continue to rely on the CSAPR-better-than-BART rule.
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    \4\ EME Homer City Generation, L.P. v. EPA (EME Homer City II), 
795 F.3d 118, 138 (D.C. Cir. 2015). The court also remanded the 
Phase 2 SO2 budgets for three other states and the Phase 
2 seasonal NOX budgets for eleven states, including 
Texas. Id.
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    The EPA issued a proposal to address the remand of the Texas Phase 
2 SO2 budget and to resolve any questions about continued 
reliance on the CSAPR-better-than-BART rule on November 3, 2016, and 
solicited comment on the proposal.\5\ Four commenters provided 
substantive comments, and this final rule takes those comments into 
consideration. The Agency's responses to the principal comments are 
provided below. The remaining comments are addressed in the Response to 
Comments document available in the docket for this action.
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    \5\ Interstate Transport of Fine Particulate Matter: Revision of 
Federal Implementation Plan Requirements for Texas, Proposed Rule, 
81 FR 78954 (November 10, 2016).
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    In this final action, as proposed, the EPA is withdrawing the FIP 
provisions requiring Texas EGUs to participate in the CSAPR 
SO2 Group 2 Trading Program and the CSAPR NOX 
Annual Trading Program during Phase 2 of these programs, which began 
with 2017 emissions.\6\ Removal of Texas EGUs from Phase 2 of these 
CSAPR trading programs renders it necessary to evaluate whether EPA 
should use other means to address any remaining transport obligation 
for Texas under CAA section 110(a)(2)(D)(i)(I) with regard to the 1997 
annual PM2.5 NAAQS. However, the EPA is finalizing its 
proposed determination that Texas does not have any such remaining 1997 
annual PM2.5 NAAQS transport obligation as of the beginning 
of Phase 2 of the CSAPR trading programs for SO2 and annual 
NOX. Accordingly, the EPA is also determining that the 
Agency has no obligation to issue new FIP requirements for Texas 
sources to address transported PM2.5 pollution under CAA 
section 110(a)(2)(D)(i)(I) with regard to this NAAQS.
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    \6\ With regard to each of the other remanded budgets, the EPA 
either has already withdrawn or expects to withdraw the FIP 
provisions requiring the EGUs in the affected states to participate 
in the corresponding CSAPR federal trading programs in Phase 2 
through other actions, as discussed in section III below.
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    Also in this action, the EPA is concluding, based on consideration 
of the sensitivity analysis included in the proposal and additional 
analysis included in this final action, that the 2012 analytic 
demonstration supporting the conclusion that CSAPR participation 
qualifies as a BART alternative is not adversely affected by the 
actions being taken to respond to the D.C. Circuit's remand of CSAPR 
Phase 2 budgets.\7\ As a result, no revisions are needed to the CSAPR-
better-than-BART rule.
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    \7\ In addition to this action, the full set of actions being 
taken to respond to the remand includes the 2016 CSAPR Update 
withdrawing the remanded seasonal NOX budgets for eleven 
states and establishing new seasonal NOX budgets to 
address a more recent ozone NAAQS for eight of those states, the 
action approving Alabama's SIP revision establishing state CSAPR 
trading programs for SO2 and annual NOX to 
replace the corresponding federal CSAPR trading programs, and the 
expected actions to approve proposed SIP revisions for Georgia and 
South Carolina comparable to Alabama's SIP revision (see notes 14, 
53, and 57 below). These additional actions are described in more 
detail in sections II.A and III.D below.
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    At the same time, however, because Texas EGUs will no longer 
participate in a CSAPR SO2 trading program, Texas

[[Page 45483]]

will no longer be eligible to rely on CSAPR participation as an 
alternative to the application of source-specific SO2 BART 
for its BART-eligible EGUs under 40 CFR 51.308(e)(4). That obligation 
and any other remaining regional haze obligations for Texas are not 
addressed in this action and will need to be addressed through other 
actions as appropriate.\8\
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    \8\ The EPA notes that under 40 CFR 51.308(e)(4), CSAPR 
implementation is available as a NOX BART alternative for 
a state whose EGUs are subject to CSAPR requirements for either 
annual NOX or seasonal NOX emissions. See 77 
FR at 33652. Texas EGUs continue to participate in a CSAPR trading 
program for seasonal NOX. In a separate proposed action, 
the EPA has proposed to address NOX BART for Texas EGUs 
through reliance on participation in CSAPR as a NOX BART 
alternative. 82 FR 917 (January 4, 2017).
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    This final rule is effective immediately upon publication in the 
Federal Register. As discussed in section VI.L below, the EPA is 
issuing this rule under CAA section 307(d). While Administrative 
Procedure Act (APA) section 553(d)\9\ generally provides that rules may 
not take effect earlier than 30 days after they are published in the 
Federal Register, CAA section 307(d)(1) clarifies that ``[t]he 
provisions of [APA] section 553 . . . shall not, except as expressly 
provided in this section, apply to actions to which this subsection 
applies.'' Thus, APA section 553(d) does not apply to this rule. 
Nevertheless, in making this rule effective immediately upon 
publication, the EPA has considered the purposes underlying APA section 
553(d). The primary purpose of the prescribed 30-day waiting period is 
to give affected parties a reasonable time to adjust their behavior and 
prepare before a final rule takes effect. This rule does not impose any 
new regulatory requirements and therefore does not necessitate time for 
affected sources to adjust their behavior or otherwise prepare for 
implementation. Further, APA section 553(d) expressly allows an 
effective date less than 30 days after publication for a rule that 
``grants or recognizes an exemption or relieves a restriction.'' This 
rule relieves Texas EGUs of certain FIP requirements that would 
otherwise apply. Consequently, making this rule effective immediately 
upon publication is consistent with the purposes of APA section 553(d).
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    \9\ 5 U.S.C. 553(d).
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II. Background

A. History and Summary of CSAPR

    The EPA initially promulgated CSAPR in 2011 to address the 
obligations of states--and of the EPA when states have not met their 
obligations--under CAA section 110(a)(2)(D)(i)(I), often referred to as 
the ``good neighbor'' provision, to prohibit transported air pollution 
contributing significantly to nonattainment in, or interfering with 
maintenance by, any other state with regard to the 1997 annual 
PM2.5 NAAQS, the 2006 24-hour PM2.5 NAAQS, and 
the 1997 8-hour ozone NAAQS.\10\ To reduce transported PM2.5 
pollution, CSAPR sets limits on annual emissions of NOX and 
SO2 as precursors to PM2.5. To reduce transported 
ozone pollution during the May-September ozone season, CSAPR sets 
limits on seasonal emissions of NOX as a precursor to ozone. 
The CSAPR requirements were initially established in FIPs, but states 
can voluntarily replace the CSAPR FIPs with CSAPR state implementation 
plans (SIPs) that include equally stringent budgets.\11\ Upon approval 
of such a CSAPR SIP, the corresponding CSAPR FIP is automatically 
withdrawn.\12\
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    \10\ See generally 76 FR 48208.
    \11\ E.g., 40 CFR 52.39(i).
    \12\ E.g., 40 CFR 52.39(j).
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    As explained in the proposal, a number of petitioners challenged 
CSAPR, and in 2015 the D.C. Circuit issued a decision remanding the 
Phase 2 SO2 emissions budgets for Alabama, Georgia, South 
Carolina, and Texas and the Phase 2 seasonal NOX budgets for 
eleven states to the EPA for reconsideration.\13\ In response to the 
remand of the Phase 2 SO2 emissions budgets, the EPA has 
engaged the affected states to determine appropriate next steps to 
address the decision with regard to each state. As discussed in the 
proposal and also in section III below, the EPA expects that EGUs in 
Alabama, Georgia, and South Carolina will continue to participate in 
CSAPR trading programs for SO2 and annual NOX 
pursuant to approved SIP revisions (with equally stringent emissions 
budgets), making Texas the only state whose EGUs will no longer 
participate in these programs to reduce transported PM2.5 
pollution as a result of actions taken to address the remand.
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    \13\ EME Homer City II, 795 F.3d at 138.
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    Also as explained in the proposal, in the CSAPR Update rule issued 
in 2016, the EPA responded to the remand of eleven states' original 
Phase 2 seasonal NOX budgets (which had been established to 
address transport obligations with regard to the 1997 8-hour ozone 
NAAQS) by withdrawing the FIP provisions requiring EGUs to comply with 
those budgets for emissions after 2016.\14\ The EPA determined that 
none of those eleven states has a remaining transport obligation under 
CAA section 110(a)(2)(D)(i)(I) with regard to the 1997 8-hour ozone 
NAAQS, but for eight of those states, including Texas, the CSAPR Update 
rule also established new budgets to address transport obligations with 
regard to the more stringent 2008 8-hour ozone NAAQS.\15\ EGUs in the 
three states with remanded Phase 2 seasonal NOX budgets for 
which the EPA did not establish new budgets--Florida, North Carolina, 
and South Carolina--are no longer required to participate in a CSAPR 
trading program for seasonal NOX emissions to address ozone 
transport obligations after 2016. However, because EGUs in North 
Carolina and South Carolina\16\ are expected to continue to participate 
in a CSAPR trading program for annual NOX emissions in order 
to address PM2.5-related transport obligations, Florida is 
expected to be the only state originally covered by CSAPR for 
NOX emissions for which all such coverage is ending as a 
result of the EPA's set of actions to address the remand.\17\
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    \14\ Cross-State Air Pollution Rule Update for the 2008 Ozone 
NAAQS (CSAPR Update), 81 FR 74504, 74576 (October 26, 2016).
    \15\ Id. at 74524.
    \16\ North Carolina EGUs remain subject to FIP provisions 
requiring participation in a CSAPR trading program for annual 
NOX emissions. The EPA's expectation that South Carolina 
EGUs will continue to participate in a CSAPR program for annual 
NOX emissions is based on South Carolina's submission of 
a SIP revision that includes such requirements, as discussed in 
sections III and V below.
    \17\ For discussion of the EPA's response to the remand of the 
Florida seasonal NOX budget, and the assessment of the 
implications of that response for the CSAPR-better-than-BART 
analytical demonstration, see 81 FR at 78962.
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    Prior to this action, Texas EGUs have been subject to CSAPR FIP 
provisions requiring participation in the CSAPR SO2 Group 2 
Trading Program and the CSAPR NOX Annual Trading Program. 
With this action, the EPA is withdrawing the FIP provisions requiring 
Texas EGUs to participate in these CSAPR federal trading programs. 
(Although the court's decision specifically remanded only Texas' Phase 
2 SO2 budget, the court's rationale for remanding that 
budget also implicates Texas' Phase 2 annual NOX budget 
because the SO2 and annual NOX budgets were 
developed through an integrated analysis and were promulgated to meet a 
common PM2.5 transport obligation under CAA section 
110(a)(2)(D)(i)(I).) This action has no effect on the separate CSAPR 
requirements applicable to Texas EGUs relating to seasonal 
NOX emissions, which, as discussed in the preceding 
paragraph, were promulgated in the

[[Page 45484]]

CSAPR Update rule and are not subject to the D.C. Circuit's remand.

B. CSAPR Participation as a BART Alternative

    The proposal provides a detailed explanation of the Regional Haze 
Rule requirements for best available retrofit technology (BART) and the 
criteria for demonstrating that an alternative measure achieves greater 
reasonable progress than source-specific BART.\18\
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    \18\ 81 FR at 78957.
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    In 2012, the EPA amended the Regional Haze Rule to provide that 
participation by a state's EGUs in a CSAPR trading program for a given 
pollutant--either a CSAPR federal trading program implemented through a 
CSAPR FIP or a CSAPR state trading program implemented through an 
approved CSAPR SIP revision--qualifies as a BART alternative for those 
EGUs for that pollutant.\19\ In promulgating this CSAPR-better-than-
BART rule, the EPA relied on an analytic demonstration of the 
improvement in visibility from CSAPR implementation relative to BART 
implementation based on an air quality modeling study.\20\ Since the 
EPA promulgated this amendment, numerous states covered by CSAPR have 
come to rely on the provision through either SIPs or FIPs.\21\ 
Additionally, many states have submitted or are planning to submit SIPs 
relying on the CSAPR-better-than-BART rule for BART or visibility 
transport purposes, or to replace regional haze FIPs with SIPs.
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    \19\ 40 CFR 51.308(e)(4); see also generally 77 FR 33642. Legal 
challenges to the CSAPR-better-than-BART rule from conservation 
groups and other petitioners are pending. Utility Air Regulatory 
Group v. EPA, No. 12-1342 (D.C. Cir. filed August 6, 2012).
    \20\ See Technical Support Document for Demonstration of the 
Transport Rule as a BART Alternative, Docket ID No. EPA-HQ-OAR-2011-
0729-0014 (December 2011) (2011 CSAPR/BART Technical Support 
Document), and memo entitled ``Sensitivity Analysis Accounting for 
Increases in Texas and Georgia Transport Rule State Emissions 
Budgets,'' Docket ID No. EPA-HQ-OAR-2011-0729-0323 (May 29, 2012), 
both available in the docket for this action.
    \21\ The EPA has promulgated FIPs relying on CSAPR participation 
for BART purposes for Georgia, Indiana, Iowa, Kentucky, Michigan, 
Missouri, Ohio, Pennsylvania, South Carolina, Tennessee, Virginia, 
and West Virginia, 77 FR at 33654, and Nebraska, 77 FR 40150, 40151 
(July 6, 2012). The EPA has approved SIPs relying on CSAPR 
participation for BART purposes for Minnesota, 77 FR 34801, 34806 
(June 12, 2012), and Wisconsin, 77 FR 46952, 46959 (August 7, 2012).
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    As explained in the proposal, the 2012 analytic demonstration that 
CSAPR provides for greater reasonable progress than BART included Texas 
EGUs as subject to CSAPR for SO2 and annual NOX 
(as well as seasonal NOX) and included Florida EGUs as 
subject to CSAPR for seasonal NOX. The EPA recognizes that 
the treatment of these EGUs in the analysis would have been different 
if the Florida FIP withdrawal finalized in the CSAPR Update rule and 
the Texas FIP withdrawal finalized in this action had been known at the 
time of the demonstration. In order to address any potential concern 
about continuing to rely on CSAPR participation as a BART alternative 
for EGUs in the remaining CSAPR states, in the proposal for this action 
the EPA provided a sensitivity analysis explicitly addressing the 
potential effect on that demonstration of the removal of Texas and 
Florida EGUs from the relevant CSAPR trading programs in response to 
the D.C. Circuit's remand. As discussed in section IV, the sensitivity 
analysis indicates clearly that the demonstration remains valid despite 
these changes in CSAPR's geographic scope, supporting the continued 
validity of EPA's 2012 conclusion that CSAPR participation meets the 
Regional Haze Rule's criteria for a BART alternative.\22\ Consequently, 
in this action the EPA is affirming the current Regional Haze Rule 
provision at 40 CFR 51.308(e)(4) authorizing the use of CSAPR 
participation as a BART alternative for BART-eligible EGUs for a given 
pollutant in states whose EGUs continue to participate in a CSAPR 
trading program for that pollutant.
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    \22\ With respect to each of the remanded budgets, the EPA has 
responded or expects to respond to the remand by withdrawing the FIP 
provisions requiring compliance with the remanded budget. Thus, all 
changes to CSAPR arising directly from the Agency's response to the 
remand are changes in CSAPR's geographic scope rather than changes 
in the stringency of state budgets. Although the EPA has also 
promulgated new CSAPR seasonal NOX budgets for 22 states 
(including eight states with remanded seasonal NOX 
budgets) in order to address a more stringent NAAQS, see generally 
81 FR 74504, for purposes of the sensitivity analysis the EPA has 
conservatively not considered the generally increased stringency of 
the new seasonal NOX budgets, but the EPA did consider 
the changes in CSAPR's geographic scope--that is, the fact that the 
remaining three states with remanded seasonal NOX budgets 
will no longer participate in CSAPR for seasonal NOX.
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III. Withdrawal of CSAPR FIP Requirements Related to Texas' Transport 
Obligations With Regard to the 1997 Annual PM2.5 NAAQS

A. Summary

    In this action, as proposed, the EPA is responding to the remand of 
the CSAPR Phase 2 SO2 budget for Texas by withdrawing the 
FIP provisions requiring Texas EGUs to participate in the CSAPR 
SO2 Group 2 Trading Program and the CSAPR NOX 
Annual Trading Program with regard to emissions during Phase 2 of those 
programs, which began in 2017. In EME Homer City II, the court remanded 
the CSAPR Phase 2 SO2 budget for Texas to the EPA for 
reconsideration on the grounds that the budget may be more stringent 
than necessary to address the state's obligation under CAA section 
110(a)(2)(D)(i)(I) to reduce transported pollution with respect to the 
1997 annual PM2.5 NAAQS.\23\ Upon review of options for 
responding to the remand, the EPA has determined, for the reasons 
discussed in this section, that withdrawal of the FIP provisions 
identified above, rather than issuance of revised FIP provisions for 
Texas with a higher (i.e., less stringent) Phase 2 SO2 
budget as advocated by some commenters, is the appropriate response. 
Withdrawal of the FIP provisions related to the CSAPR SO2 
trading program encompasses withdrawal of the requirement for Texas 
EGUs to comply with the remanded Phase 2 SO2 budget, thereby 
addressing the specific rule provision remanded by the court. The EPA 
is withdrawing the FIP provisions related to annual NOX (in 
addition to the requirements related to SO2) because the 
CSAPR FIP requirements for SO2 and annual NOX 
were determined through an integrated analysis and were promulgated in 
combination to remedy covered states' PM2.5 transport 
obligations; the court's finding that CSAPR's Phase 2 requirements may 
be more stringent than necessary to address Texas' PM2.5 
transport obligation therefore implicates the state's Phase 2 budgets 
for both SO2 and annual NOX.
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    \23\ 795 F.3d at 128-29. A more detailed discussion of how the 
EPA established the CSAPR Phase 2 SO2 budget for Texas 
and why the court found the budget invalid is included in the 
proposal for this action. 81 FR at 78958.
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    Withdrawal of the previous CSAPR FIP requirements revives the need 
to consider Texas' transport obligation under CAA section 
110(a)(2)(D)(i)(I) with regard to the 1997 annual PM2.5 
NAAQS and to address any remaining obligation through other means. 
However, as proposed, the Agency is further determining that Texas has 
no remaining transport obligation under this CAA provision with regard 
to this NAAQS following withdrawal of the previous FIP requirements, 
and consequently is also determining that the EPA has no obligation to 
issue new FIP requirements as to Texas's transport obligation under CAA 
section 110(a)(2)(D)(i)(I) with regard to the 1997 annual 
PM2.5 NAAQS.
    In the CSAPR final rule, the EPA determined that 23 states, 
including Texas, had transport obligations with regard to the 1997 
annual PM2.5

[[Page 45485]]

NAAQS, the 2006 24-hour PM2.5 NAAQS, or both, and 
established SO2 and annual NOX emissions budgets 
for each of the states.\24\ The budgets were implemented through FIP 
provisions requiring the affected EGUs in each covered state to 
participate in CSAPR allowance trading programs. In the case of Texas, 
the PM2.5-related FIP requirements were imposed based solely 
on the state's transport obligations with regard to the 1997 annual 
PM2.5 NAAQS.\25\
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    \24\ The EPA also determined in CSAPR and a related supplemental 
rule that 25 states, including Texas, had transport obligations with 
regard to the 1997 8-hour ozone NAAQS. In all, 28 states were 
determined to have transport obligations related to either 
PM2.5, ozone, or both. The EPA's process for determining 
states' emissions limitations under CSAPR and the associated CSAPR 
FIP requirements is described at length in the preamble to the CSAPR 
final rule. See generally 77 FR at 48222-71.
    \25\ As noted in the proposal and further discussed below, the 
modeling for the CSAPR final rule also linked Texas to a downwind 
air quality problem with regard to the 2006 24-hour PM2.5 
NAAQS, but the EPA did not rely on the linkage with regard to that 
NAAQS as a basis for establishing CSAPR FIP requirements for Texas 
EGUs. 81 FR at 78960 n.42; see also 76 FR at 48243, 48214.
---------------------------------------------------------------------------

    Following issuance of the D.C. Circuit's decision in EME Homer City 
II remanding the CSAPR Phase 2 SO2 budget for Texas, the EPA 
reevaluated its earlier conclusions regarding Texas' PM2.5 
transport obligations by reexamining the data in the final CSAPR record 
in light of the D.C. Circuit's holdings in the decision, including the 
holdings regarding the CSAPR Phase 2 seasonal NOX budgets 
for several states, as explained in the proposal.\26\ The final CSAPR 
record contained ``base case'' modeling projections of air quality at 
monitoring locations throughout the country both for 2012, the intended 
start year of Phase 1 of the CSAPR trading programs, and for 2014, the 
intended start year of Phase 2 of the programs. The base case 
projections were designed to represent projected air quality at these 
monitoring locations without any emission reductions from CSAPR. In the 
CSAPR rulemaking, the EPA used the 2012 base case air quality 
projections for purposes of identifying ozone receptors projected to 
have air quality problems and determining states that were linked to 
those receptors and that therefore might have transport obligations 
under both Phase 1 and Phase 2 of the CSAPR trading programs. However, 
in EME Homer City II, the D.C. Circuit agreed with petitioners\27\ that 
the EPA should also have considered the 2014 base case air quality 
projections for these purposes, and that in instances of receptors 
where the 2014 base case projections did not show air quality problems, 
the EPA lacked authority to require any emission reductions in Phase 2 
of the CSAPR trading programs based on linkages to those receptors only 
occurring in Phase 1 of the programs. On these grounds, the court found 
that EPA lacked authority to establish Phase 2 seasonal NOX 
emission limitations for EGUs in ten states linked solely to ozone 
receptors whose 2014 air quality projections did not show air quality 
problems.\28\
---------------------------------------------------------------------------

    \26\ 81 FR at 78960.
    \27\ See Opening Brief of Industry and Labor Petitioners on 
Remand 8, 14, EME Homer City Generation, L.P. v. EPA, No. 11-1302 
(D.C. Cir. filed December 10, 2014).
    \28\ EME Homer City II, 795 F.3d at 129-30. The court also 
remanded the Phase 2 seasonal NOX budget for an eleventh 
state (Texas), but on different grounds.
---------------------------------------------------------------------------

    While not discussed in the court's decision, the projections of 
2014 air quality for a PM2.5 receptor in Madison County, 
Illinois (the only PM2.5 receptor with projected air quality 
problems to which Texas was linked) in the final CSAPR record are 
analogous to the 2014 air quality projections for the ozone receptors 
described above, in that the air quality problems at the Madison County 
receptor were projected to be resolved in 2014 before any emission 
reductions from CSAPR. In light of the court's holding as to the legal 
import of the 2014 base case air quality projections for the ozone 
receptors described above, the EPA considered the legal import of the 
analogous 2014 base case air quality projections for the Madison County 
PM2.5 receptor with respect to Texas' PM2.5-
related obligations under CSAPR. There are three relevant record data 
elements. First, the record indicates that the only PM2.5 
receptor to which Texas is linked for purposes of determining possible 
obligations under the good neighbor provision is the receptor in 
Madison County, Illinois.\29\ Second, the projected maximum design 
value \30\ for annual PM2.5 at the Madison County receptor 
is 15.02 micrograms per cubic meter ([micro]g/m\3\) in the 2014 base 
case.\31\ Finally, the value that the EPA used to determine whether a 
particular PM2.5 receptor should be identified as having air 
quality problems that may trigger transport obligations with regard to 
the 1997 annual PM2.5 NAAQS is 15.05 [micro]g/m\3\, which is 
higher than the Madison County maximum design value in the 2014 base 
case.\32\ Thus, the reevaluation of the final CSAPR record in light of 
the D.C. Circuit's holding indicates that the record does not support a 
finding of a transport obligation for Texas under CAA section 
110(a)(2)(D)(i)(I) with regard to this NAAQS as of the beginning of 
Phase 2 of the CSAPR trading programs for SO2 and annual 
NOX, and the Agency accordingly finds that the state's 
obligation is resolved without a need for further emission reductions, 
including the emission reductions from CSAPR. The finding that Texas's 
transport obligation with regard to this NAAQS is resolved as of the 
start of Phase 2 of the CSAPR trading programs without the need for any 
emission reductions from CSAPR removes the EPA's authority to issue new 
FIP requirements for purposes of responding to the court's remand of 
the state's CSAPR Phase 2 SO2 budget. The finding likewise 
eliminates any obligation of the EPA to issue new FIP requirements 
addressing a remaining transport obligation of the state with regard to 
this NAAQS following withdrawal of the existing CSAPR FIP requirements, 
because the state has no such remaining transport obligation following 
the withdrawal.
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    \29\ See 76 FR at 48241, tables V.D-2 and V.D-3.
    \30\ The EPA independently considered linkages to 
``nonattainment'' and ``maintenance'' receptors. If both the 
projected average design value and the projected maximum design 
values for a receptor were above the triggering threshold, the 
receptor was considered a nonattainment receptor. If the projected 
maximum design value was above the triggering threshold but the 
projected average design value was not, the receptor was considered 
a maintenance receptor. Thus, if the projected maximum design value 
was not above the triggering threshold, the receptor was not 
considered either a nonattainment receptor or a maintenance 
receptor. See 76 FR at 48233.
    \31\ See projected 2014 base case maximum annual 
PM2.5 design value for Madison County, Illinois receptor 
171191007 at B-41 of the Air Quality Modeling Final Rule Technical 
Support Document, Docket ID No. EPA-HQ-OAR-2009-0491-4140 (June 
2011) (CSAPR Final Rule Technical Support Document), available in 
the docket for this action.
    \32\ 76 FR at 48233.
---------------------------------------------------------------------------

    As noted in the proposal, the modeling for the CSAPR final rule 
also linked Texas to a downwind air quality problem with regard to the 
2006 24-hour PM2.5 NAAQS, but the EPA did not rely on the 
linkage with regard to this NAAQS as a basis for establishing CSAPR FIP 
requirements for Texas EGUs. In the proposal, the EPA indicated that 
data in the final CSAPR record, reevaluated in light of EME Homer City 
II, would show that Texas no longer has a transport obligation with 
regard to the 2006 24-hour PM2.5 NAAQS as of the beginning 
of Phase 2 of the CSAPR trading programs for SO2 and annual 
NOX, but that because Texas was not subject to CSAPR 
requirements with regard to this NAAQS, the EPA was not proposing to 
make a determination in this action as to any obligation of Texas with 
regard to this NAAQS. Nevertheless, because commenters raise the 2006 
24-hour PM2.5 NAAQS in their comments, the EPA will explain 
how the court's reasoning would apply with respect to

[[Page 45486]]

the data for this NAAQS. The analysis for the 2006 24-hour 
PM2.5 NAAQS is essentially identical to the analysis 
described above with regard to the 1997 annual PM2.5 NAAQS. 
Specifically, the Madison County receptor is the only PM2.5 
receptor to which Texas was linked for this NAAQS; \33\ the projected 
maximum design value for 24-hour PM2.5 at the Madison County 
receptor is 35.3 [micro]g/m\3\ in the 2014 base case; \34\ and the 
value that the EPA used to determine whether a particular 
PM2.5 receptor should be identified as having air quality 
problems that may trigger transport obligations with regard to the 2006 
24-hour PM2.5 NAAQS is 35.5 [micro]g/m\3\, which is higher 
than the Madison County maximum design value in the 2014 base case.\35\ 
Thus, the reevaluation of the final CSAPR record in light of the D.C. 
Circuit's holding also indicates that the record would not support a 
finding of a transport obligation for Texas with regard to the 2006 24-
hour PM2.5 NAAQS as of the beginning of Phase 2 of the CSAPR 
trading programs for SO2 and annual NOX.
---------------------------------------------------------------------------

    \33\ See 76 FR at 48242-44, tables V.D-5 and V.D-6.
    \34\ See projected 2014 base case maximum 24-hour 
PM2.5 design value for Madison County, Illinois receptor 
171191007 at B-70 of the CSAPR Final Rule Technical Support 
Document, available in the docket for this action.
    \35\ 76 FR at 48234-35.
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    Overall, on the subject of the proposed withdrawal of the FIP 
provisions and the proposed finding that Texas will no longer have a 
transport obligation following withdrawal of the FIP provisions, the 
EPA received substantive comments from two parties.\36\ The remainder 
of this section summarizes these commenters' principal comments on this 
topic and provides the Agency's response.
---------------------------------------------------------------------------

    \36\ A third commenter states without further elaboration that 
it does not oppose the FIP withdrawal.
---------------------------------------------------------------------------

B. Adequacy of Rationale for Finding No Remaining Transport Obligation

    The commenters state that the Agency's explanation for the proposed 
finding that Texas no longer has a transport obligation under CAA 
section 110(a)(2)(D)(i)(I) with regard to the 1997 annual 
PM2.5 NAAQS as of the beginning of Phase 2 of the CSAPR 
trading programs for SO2 and annual NOX is 
inadequate or confusing, and that the Agency must provide additional 
explanation for changing its position on the continued existence of a 
Texas transport obligation from the contrary position taken by the 
Agency when promulgating the CSAPR final rule.
    The EPA disagrees with these comments. The proposal contained a 
complete explanation of the Agency's basis for this finding, including 
all necessary supporting data and documentation.\37\ As fully explained 
in the proposal and reiterated above, the Agency's change in position 
as to Texas' transport obligation between the CSAPR final rule and this 
action is readily attributable to the D.C. Circuit's holding in EME 
Homer City II with regard to the legal import of the 2014 base case air 
quality projections in the final CSAPR record. The court's holding 
clarifies the legal standard the Agency should have used when 
considering the information in the final CSAPR record, which includes 
those air quality projections.
---------------------------------------------------------------------------

    \37\ 81 FR at 78960.
---------------------------------------------------------------------------

C. Responsiveness to the D.C. Circuit's Remand Instructions

    The commenters assert that withdrawal of the remanded Texas 
SO2 budget without issuance of a presumably less stringent 
replacement budget is not responsive to the D.C. Circuit's remand 
instructions. According to the commenters, the court directed the EPA 
to develop a revised CSAPR FIP SO2 budget for Texas EGUs 
that does not over-control, and the EPA must either do so or, 
alternatively, must allow Texas to submit a CSAPR SIP with a higher 
SO2 budget. The commenters' argument is intended to provide 
a continued basis for reliance on CSAPR participation as an 
SO2 BART alternative for Texas EGUs. Underlying the 
commenters' arguments is an apparent belief that a revised, higher 
CSAPR budget, whether issued through a FIP or approved through a SIP, 
would automatically enable Texas to rely on CSAPR participation as an 
alternative to source-specific SO2 BART requirements for the 
State's EGUs under 40 CFR 51.308(e)(4).
    The EPA disagrees with these comments. As an initial matter, the 
D.C. Circuit in fact did not direct the Agency to develop replacement 
budgets for the Texas SO2 budget or any of the other 
remanded CSAPR Phase 2 budgets. Rather, the court found that certain 
budgets were invalid and remanded to the EPA to ``reconsider'' 
them,\38\ a general instruction that encompasses a range of possible 
Agency actions upon reconsideration. The commenters cite no statement 
from the court's opinion that requires the establishment of replacement 
budgets, but assert that such a requirement must be inferred from the 
court's other statements or determinations. For example, the commenters 
suggest that because the court remanded the budgets without vacatur 
instead of vacating the budgets outright, the court must have intended 
for the Agency to replace rather than simply withdraw the budgets. 
However, the court actually provided a different rationale for 
remanding without vacatur, including the statement that ``some good 
neighbor obligations may be appropriate for some of the relevant 
states.'' \39\ The reference to ``some'' of the states indicates that 
the court considered it likely that replacement budgets would not be 
established in every instance, and the use of the word ``may'' 
indicates that the court considered it possible that replacement 
budgets would not be established in any instance. Thus, contrary to the 
commenters' claims, the court's opinion clearly affords the Agency the 
discretion to determine the appropriate response to the remand and does 
not prevent the Agency from determining upon reconsideration that the 
program is no longer needed for a particular state with respect to a 
particular pollutant and consequently not establishing a replacement 
budget.
---------------------------------------------------------------------------

    \38\ EME Homer City II, 795 F.3d at 124, 138.
    \39\ Id. at 132 (emphasis added).
---------------------------------------------------------------------------

    The commenters make several additional arguments in support of 
their contention that the FIP withdrawal is not responsive to the D.C. 
Circuit's instructions. One commenter asserts that because the court 
stated that the Agency could consider new information in responding to 
the remand, the court must have intended for the Agency's response to 
involve the establishment of replacement budgets. This claim is a non 
sequitur--the court's acknowledgement that additional information may 
be considered says nothing about what the Agency may or must conclude 
from consideration of that information. The same commenter also asserts 
that the Agency may not rely on lack of FIP authority as the basis for 
not establishing a revised budget because lack of FIP authority was not 
the basis cited by the court for remanding the budget. This claim is 
also a non sequitur--the Agency lacks authority to issue a revised 
budget and therefore may not do so, regardless of what additional 
defects the court may have cited in ordering the remand.
    The other commenter asserts that the FIP withdrawal would disrupt 
allowance markets, contrary to the concern expressed by the D.C. 
Circuit that outright vacatur, rather than remand without vacatur, 
could have that impact. While the EPA agrees with the concern expressed 
by the court and the commenter regarding the potentially disruptive 
effects of outright vacatur on

[[Page 45487]]

allowance markets, the Agency does not agree that the court's concern 
regarding unintended consequences of a judicial vacatur provides a 
basis for not taking final action at this time to withdraw the Texas 
FIP requirements, for two reasons. First, the EPA believes that the 
court did not intend for its expression of concern to constrain the 
Agency's range of possible responses to the remand. As discussed above, 
it is clear from the opinion that the court anticipated the possibility 
that upon reconsideration the EPA would determine that some, or even 
all, of the remanded budgets should be withdrawn and not replaced. 
Second, in this instance, emissions data reported by the EGUs covered 
by the CSAPR trading programs for SO2 and annual 
NOX demonstrate that withdrawal of the FIP provisions 
requiring Texas EGUs to participate in these programs will not cause 
allowance market disruption for the programs' remaining participants. 
Under both programs, the totals of the emissions reported by 
participating EGUs for both 2015 and 2016 in states other than Texas 
were less than the sums of the Phase 2 emissions budgets for these 
other states.\40\ Likewise, under both programs the totals of the 
emissions reported by Texas EGUs for both 2015 and 2016 were less than 
the Texas Phase 2 budgets.\41\ The elimination from the programs of 
Texas EGUs and the allowances allocated to Texas EGUs is therefore not 
expected to cause either shortages of allowances available for purchase 
by EGUs in the other states or the loss of an important market for sale 
of surplus allowances by EGUs in the other states. In these 
circumstances, the EPA anticipates that the FIP withdrawal will have 
little impact on the allowance market in either trading program.
---------------------------------------------------------------------------

    \40\ See ``2015-2016 Compliance Summary for CSAPR SO2 
Group 2 and NOX Annual Trading Programs,'' available in 
the docket for this action.
    \41\ Id.
---------------------------------------------------------------------------

    With regard to the two commenters' preferred response to the 
remand--that the EPA establish a revised, less stringent SO2 
budget for Texas EGUs and implement that budget through a revised FIP--
such an action is infeasible because the Agency lacks the necessary 
legal authority. In this action, the EPA is finalizing the proposed 
finding that Texas no longer has a transport obligation under CAA 
section 110(a)(2)(D)(i)(I) for the 1997 annual PM2.5 NAAQS. 
That finding addresses the deficiency in the Texas SIP that was the 
basis for issuance of the withdrawn FIP requirements and, therefore, 
because there is no longer a deficiency, the Agency no longer has 
authority to issue revised FIP requirements.\42\ The reasons for the 
finding are discussed above and were discussed at length in the 
proposal.\43\
---------------------------------------------------------------------------

    \42\ See CAA section 110(c).
    \43\ 81 FR at 78960.
---------------------------------------------------------------------------

    With regard to the commenters' suggested alternative response to 
the remand--that the EPA allow Texas to submit a CSAPR SIP with a 
higher SO2 budget in order to allow the state to rely on 
CSAPR participation as an SO2 BART alternative even if the 
state's EGUs are no longer subject to a CSAPR FIP SO2 
budget--the comment is not properly directed to the EPA, because Texas 
has not expressed interest in submitting a CSAPR SIP.\44\ Moreover, 
even if consideration of Texas' BART obligations were relevant for our 
action on remand, reliance on CSAPR participation with a higher budget 
would not automatically qualify as an SO2 BART alternative 
under the terms of the CSAPR-better-than-BART rule. That rule allows a 
state to rely on its EGUs' participation in a CSAPR SIP trading program 
only if the EPA approves the SIP as ``meeting the requirements of'' the 
CSAPR regulations at 40 CFR 52.38 and 52.39.\45\ As relevant here, the 
CSAPR regulations at Sec.  52.39 expressly preclude a state's 
SO2 emissions budget from exceeding the SO2 
emissions budget established under the CSAPR FIP trading program that 
the CSAPR SIP trading program would replace.\46\ Thus, even if the D.C. 
Circuit's remand could serve as a basis for the EPA to approve a SIP 
revision that does not satisfy Sec.  52.39 on the grounds that the 
state's transport obligations can be addressed by a less stringent 
budget, the CSAPR-better-than-BART rule at 40 CFR 51.308(e)(4) would 
not be satisfied. A SIP approved on such a basis could in theory 
provide a mechanism for Texas EGUs to participate in CSAPR with a 
higher SO2 budget than the remanded FIP budget despite the 
Agency's lack of authority to set a revised SO2 budget 
through a revised FIP. However, because of the increased SO2 
budget, such a SIP would not ``meet[] the requirements of . . . Sec.  
52.39'' and therefore would not allow the state to rely on its EGUs' 
participation in the CSAPR SIP trading program as an alternative to 
source-specific BART for SO2.\47\
---------------------------------------------------------------------------

    \44\ Texas did not submit comments on the proposal for this 
action.
    \45\ 40 CFR 51.308(e)(4).
    \46\ 40 CFR 52.39(i)(1)(i).
    \47\ To the extent the commenters are suggesting that the D.C. 
Circuit's holdings in EME Homer City II require the Agency to find 
that a SIP with a revised, higher SO2 budget would 
somehow satisfy the CSAPR-better-than-BART rule despite its plain 
language, the Agency disagrees. The court held that the remanded 
budgets may over-control relative to the states' transport 
obligations, but did not determine that the budgets are more 
stringent than necessary to serve as an alternative to source-
specific BART. Further, the CSAPR-better-than-BART rule rests on an 
evaluation of the projected visibility impacts from CSAPR 
implementation assuming the final CSAPR Phase 2 budget stringencies 
(including the 2012 CSAPR budget revisions, which were accounted for 
in the analysis for the final CSAPR-better-than-BART rule). Given 
this, continuing to enforce the CSAPR-better-than-BART rule's 
requirement that a state's participation in CSAPR through a SIP must 
``meet[] the requirements of . . . Sec.  52.39''--including the 
requirement for a state budget no less stringent than was analyzed 
for purposes of promulgating the rule--is entirely reasonable.
---------------------------------------------------------------------------

D. Consistency of Responses to Remand Across States

    One commenter states that by withdrawing the FIP requirements the 
EPA is arbitrarily singling Texas out as the only state with a remanded 
CSAPR budget whose EGUs will lose the ability to rely on CSAPR 
participation as a BART alternative. The commenter further asserts that 
the Agency's ``sole purpose'' in withdrawing the FIP requirements is to 
facilitate the imposition of source-specific SO2 BART 
requirements on Texas EGUs through a different action.
    The EPA disagrees with these comments, which are entirely contrary 
to the record. First, on the question of uniform application of the 
CSAPR-better-than-BART regulations, no state whose EGUs do not 
participate in a CSAPR trading program for a given pollutant can rely 
on CSAPR participation as a BART alternative for that pollutant. In 
response to the D.C. Circuit's remand of CSAPR Phase 2 budgets, the EPA 
has withdrawn or expects to withdraw all fifteen remanded budgets. As 
explained in the proposal, in thirteen instances, the state will retain 
eligibility to rely on the CSAPR-better-than-BART rule for the 
pollutant in question through either the EPA's establishment of a new 
CSAPR budget to address a more stringent NAAQS (eight seasonal 
NOX budgets), the state's sources' continued participation 
in a different CSAPR trading program for the same pollutant (two 
seasonal NOX budgets), or the state's voluntary adoption in 
a SIP revision of a CSAPR state budget as stringent as the remanded 
CSAPR FIP budget (three SO2 budgets).\48\ In the remaining 
two instances where a remanded budget is being withdrawn and none of 
the three options for preserving eligibility to rely on CSAPR-better-
than-BART applies--Texas' SO2 budget and Florida's seasonal 
NOX budget--the state is losing the

[[Page 45488]]

opportunity to rely on CSAPR participation as a BART alternative for 
that pollutant.\49\ Thus, Texas is being treated the same as every 
other state with respect to use of the CSAPR-better-than-BART rule.\50\
---------------------------------------------------------------------------

    \48\ 71 FR at 78956-57.
    \49\ As noted in the proposal, 81 FR at 78962, n.55, the EPA has 
already approved the incorporation into Florida's SIP of 
determinations regarding source-specific NOX BART. 77 FR 
71111, 71113-14 (November 29, 2012); 78 FR 53250, 53267 (August 29, 
2013).
    \50\ As a further example of the consistent treatment of Texas, 
the EPA notes that, despite the withdrawal of the Texas FIP 
requirements relating to annual NOX emissions, the state 
will be able to continue to rely on the CSAPR-better-than-BART rule 
for NOX as long as the state's EGUs continue to 
participate in a CSAPR trading program for seasonal NOX 
emissions. See 81 FR at 78955 n.4 and 78956 n.7.
---------------------------------------------------------------------------

    Second, on the question of the EPA's purpose in withdrawing the FIP 
requirements, that purpose is to address the court's remand. As 
explained in the proposal, before initiating this action, the EPA 
communicated with officials in all four states with remanded 
SO2 budgets--Alabama, Georgia, South Carolina, and Texas--
regarding the EPA's intent to respond to the remand of the Phase 2 
SO2 budgets by withdrawing the FIP provisions requiring the 
states' EGUs to participate in the CSAPR federal trading programs for 
SO2 and annual NOX.\51\ The EPA explained that 
each state would lose its ability to rely on CSAPR participation as a 
BART alternative for SO2 and/or NOX if its EGUs 
no longer participated in the CSAPR trading programs, but that the 
state could preserve that ability, if desired, by submitting a CSAPR 
SIP revision replacing the CSAPR federal trading programs with CSAPR 
state trading programs applying state-established budgets no less 
stringent than the remanded federally-established budgets (i.e., 
budgets consistent with the 2012 CSAPR-better-than-BART analytic 
demonstration).\52\ Alabama, Georgia, and South Carolina indicated 
their preference to pursue the SIP revision option. The EPA approved 
Alabama's CSAPR SIP revision in 2016 and, accordingly, the FIP 
provisions requiring its EGUs to participate in the CSAPR federal 
trading programs for SO2 and annual NOX have been 
automatically withdrawn.\53\ Georgia and South Carolina committed to 
the EPA in 2016 to submit similar CSAPR SIP revisions by deadlines 
falling in September 2017 and August 2017, respectively.\54\ Georgia 
has in fact now submitted its SIP to the EPA for approval,\55\ South 
Carolina has submitted its proposed state CSAPR trading program rules 
and has requested that the EPA begin the SIP approval process under the 
Agency's parallel processing procedure,\56\ and the EPA has proposed to 
approve both SIP revisions.\57\ The CSAPR FIP provisions remain in 
place for the time being for EGUs in Georgia and South Carolina, and 
the EPA is not proposing their withdrawal at this time based on the 
reasonable expectation that such withdrawal will be automatically 
accomplished as a result of the Agency's action on those states' SIP 
submittals, just as with Alabama.\58\ Because Texas has indicated that 
it will not submit a CSAPR SIP revision, the EPA is proceeding with 
this action to withdraw the FIP requirements for Texas EGUs, consistent 
with the intended approach previously communicated to officials for all 
four states. Texas has had the same set of options available to all 
four states with remanded SO2 budgets and has selected a 
different option than the other three states.
---------------------------------------------------------------------------

    \51\ See memo entitled ``The U.S. Environmental Protection 
Agency's Plan for Responding to the Remand of the Cross-State Air 
Pollution Rule Phase 2 SO2 Budgets for Alabama, Georgia, 
South Carolina and Texas'' from Janet G. McCabe, EPA Acting 
Assistant Administrator for Air and Radiation, to EPA Regional Air 
Division Directors (June 27, 2016), available in the docket for this 
action. The memo directs the Regional Air Division Directors to 
share the memo with state officials. The EPA also communicated 
orally with officials in Alabama, Georgia, South Carolina, and Texas 
in advance of the memo.
    \52\ Although the D.C. Circuit remanded the states' Phase 2 
SO2 budgets because it determined that the budgets may be 
more stringent than necessary to address the states' identified 
PM2.5 transport obligations, nothing in the court's 
decision affects the states' authority to seek incorporation into 
their SIPs of state-established budgets as stringent as the remanded 
federally-established budgets or limits the EPA's authority to 
approve such SIP revisions. See CAA sections 116, 110(k)(3).
    \53\ Air Plan Approval; Alabama; Cross-State Air Pollution Rule, 
81 FR 59869 (August 31, 2016).
    \54\ See letters to Heather McTeer Toney, Regional 
Administrator, EPA Region 4, from Judson H. Turner, Director of the 
Environmental Protection Division, Georgia Department of Natural 
Resources (May 26, 2016) and from Myra C. Reece, Director of 
Environmental Affairs, South Carolina Department of Health and 
Environmental Control (April 19, 2016), available in the docket for 
this action. The EPA has conditionally approved the CAA section 
110(a)(2)(D)(i)(II) prong 4 visibility element for multiple NAAQS in 
the Georgia and South Carolina SIPs based on each state's commitment 
to submit a CSAPR SIP revision. 81 FR 65899, 65900 (September 26, 
2016) (Georgia); 81 FR 56512, 56513 (August 22, 2016) (South 
Carolina). Each state committed to submit its CSAPR SIP revision 
within one year of the date of the Agency's final conditional 
approval of the state's prong 4 SIP revision. Failure of a state to 
meet a commitment serving as the basis for a conditional SIP 
approval results in automatic conversion of the conditional approval 
to a disapproval.
    \55\ See letter to V. Anne Heard, Acting Regional Administrator, 
EPA Region 4, from Richard E. Dunn, Director, Environmental 
Protection Division, Georgia Department of Natural Resources (July 
26, 2017), available in the docket for this action.
    \56\ See letter to V. Anne Heard, Acting Regional Administrator, 
EPA Region 4, from Myra C. Reece, Director of Environmental Affairs, 
South Carolina Department of Health and Environmental Control (May 
26, 2017), available in the docket for this action. Under the 
parallel processing procedure, the EPA works closely with the state 
agency during regulatory development, and the state submits a copy 
of its proposed regulations to the EPA before completion of the 
state's public notice and adoption process. The EPA reviews the 
proposed state action, prepares a notice of proposed EPA action 
(approval or disapproval) for publication in the Federal Register, 
and provides public notice concurrently with the state's process. 
After the state adopts its final regulations and submits its formal 
SIP revision request, the EPA reviews the SIP submission for changes 
from proposal and either prepares a notice of final EPA action or, 
if the state has made significant changes, may re-propose before 
taking final EPA action. The public comment period on South 
Carolina's proposed regulations ended on June 26, 2017, and the 
state expects its final regulations to become effective in August 
2017. Id.
    \57\ Air Plan Approval; Georgia; Cross-State Air Pollution Rule, 
82 FR 38866 (August 16, 2017); Air Plan Approval; South Carolina; 
Cross-State Air Pollution Rule, 82 FR 37389 (August 10, 2017).
    \58\ If the EPA disapproves Georgia's or South Carolina's SIP 
submittal, the EPA will propose to withdraw the FIP provisions 
requiring that state's EGUs to participate in the CSAPR federal 
trading programs for SO2 and annual NOX, 
consistent with the action taken here for Texas EGUs.
---------------------------------------------------------------------------

E. Consistency of Consideration of D.C. Circuit's Holding Across States

    One commenter asserts that the EPA has not analyzed whether other 
states covered by CSAPR are linked only to receptors for which the 2014 
base case projections do not show air quality problems, and that ``[b]y 
not performing that analysis, the EPA is arbitrarily singling Texas out 
for removal from the CSAPR program.''
    The EPA disagrees with these comments. With respect to the budgets 
that were not remanded by the court, the Agency has confirmed for each 
such budget that the state is linked to at least one receptor for which 
the base case 2014 air quality projections showed air quality problems. 
The court's holding as to lack of authority to establish Phase 2 
emission reduction requirements for a state in the absence of any 
linkage to a projected air quality problem in the 2014 base case 
therefore does not extend to these budgets.\59\
---------------------------------------------------------------------------

    \59\ See 76 FR at 48241-44, tables V.D-2, V.D-3, V.D-5, and V.D-
6 (annual and 24-hour PM2.5 linkages); id. at 48246, 
tables V.D-8 and V.D-9 (ozone linkages); CSAPR Final Rule Technical 
Support Document at B-35 to B-92 (2014 base case maximum design 
values for annual and 24-hour PM2.5); id. at B-4 to B-34 
(2014 base case maximum design values for ozone). As discussed 
above, the relevant triggering values for annual and 24-hour 
PM2.5 are 15.05 [micro]g/m\3\ and 35.5 [micro]g/m\3\, 
respectively. The relevant triggering value for ozone is 85 parts 
per billion (ppb). 76 FR at 48236.
---------------------------------------------------------------------------

    With respect to the remanded budgets, the EPA again rejects the 
suggestion that Texas is being treated differently than any other 
state. As noted in the response above to the comments concerning the 
consistency of the Agency's responses to the remand,

[[Page 45489]]

the FIP requirements to comply with all the remanded budgets, not just 
the remanded Texas SO2 budget, have been withdrawn or are 
expected to be withdrawn. Further, as discussed above, in the cases of 
ten of the eleven remanded seasonal NOX budgets, the absence 
of air quality problems at the relevant receptors in the 2014 base case 
projections was expressly cited by the court as the basis for remanding 
the budgets. The EPA's reliance on the court's holding as applied to 
those states' ozone-related transport obligations with regard to the 
1997 8-hour ozone NAAQS is indistinguishable from the EPA's reliance on 
the same holding as applied to Texas' PM2.5-related 
transport obligations with regard to the 1997 annual PM2.5 
NAAQS.\60\
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    \60\ In the case of the last remanded seasonal NOX 
budget--for Texas--the court remanded the budget on different 
grounds, and the EPA subsequently determined through further 
analysis that the state has no remaining transport obligation under 
CAA section 110(a)(2)(D)(i)(I) with respect to the 1997 8-hour ozone 
NAAQS. See 81 FR at 74524. In the cases of the remanded 
SO2 budgets for Alabama, Georgia, and South Carolina, the 
states are adopting equally stringent CSAPR SIP budgets to replace 
the withdrawn FIP budgets in order to preserve the states' options 
to rely on the CSAPR-better-than-BART rule, thereby rendering moot 
any questions about the states' remaining transport obligations and 
EPA's authority or obligation to issue revised FIP budgets to 
address such transport obligations.
---------------------------------------------------------------------------

F. Potential Use of Texas FIP Budgets To Address a Different PM2.5 
NAAQS

    Finally, the commenters state that the EPA should consider Texas's 
obligations to address interstate transport with respect to the 2006 
24-hour PM2.5 NAAQS and/or the 2012 annual PM2.5 
NAAQS before withdrawing Texas' FIP obligations. As noted in the 
proposal and discussed above, in the case of Texas, CSAPR FIP 
obligations related to PM2.5 pollution were established with 
respect to the 1997 annual PM2.5 NAAQS only, even though for 
other states the CSAPR FIPs were based on the states' transport 
obligations with respect to both the 1997 annual PM2.5 NAAQS 
and the 2006 24-hour PM2.5 NAAQS.\61\ The commenters assert 
that failure to consider Texas' potential transport obligations with 
respect to the 2006 24-hour PM2.5 NAAQS now before 
withdrawing the FIP obligations would be inconsistent with the manner 
in which the EPA responded to the D.C. Circuit's remand of seasonal 
NOX budgets and inconsistent with data in the CSAPR record 
that links Texas to downwind air quality problems with respect to the 
2006 24-hour PM2.5 NAAQS.\62\
---------------------------------------------------------------------------

    \61\ See 81 FR at 78960 n.42; see also 76 FR at 48213, table 
III-1.
    \62\ One of the commenters asserts that ``under EPA's own 
theory,'' the existence of this data in the CSAPR final record 
mandates that the EPA consider the state's transport obligations 
with respect to the 2006 24-hour PM2.5 NAAQS before 
withdrawing the FIP requirements. Wrongly attributing this 
``theory'' to the Agency, the commenter ignores other factors the 
Agency must take into account before promulgating FIP requirements, 
such as whether a statutory condition establishing FIP authority has 
been satisfied. In any event, for this final action the Agency has 
expressly considered (and rejected) the option of leaving the Texas 
FIP requirements in place to address the state's transport 
obligations with respect to this NAAQS, as discussed in this 
section.
---------------------------------------------------------------------------

    The EPA disagrees with this comment for three reasons. First, as 
noted above, the Agency is responding to the court's remand of all 
fifteen CSAPR Phase 2 SO2 and seasonal NOX 
budgets in the same way, namely by withdrawing the FIP provisions 
requiring affected EGUs to comply with the remanded budgets.\63\ The 
differences noted by the commenters are differences only in the actions 
that are being coordinated with the responses, not differences in the 
responses themselves.
---------------------------------------------------------------------------

    \63\ As discussed in the proposal, addressing the remanded 
budgets by withdrawing the FIP requirements is also fully consistent 
with the manner in which EPA has responded to previous judicial 
remands regarding obligations of individual states under other EPA 
rules addressing multiple states' transport obligations. 81 FR at 
78959.
---------------------------------------------------------------------------

    Second, the differences in the coordinated actions are reasonable 
given the differences in other regulatory activities being undertaken 
for the two pollutants. The EPA coordinated the withdrawal of the 
eleven remanded seasonal NOX budgets addressing the 1997 8-
hour ozone NAAQS with the establishment of new budgets for eight of 
those states addressing the 2008 8-hour ozone NAAQS because a 
rulemaking to address transported pollution with respect to the 2008 8-
hour ozone NAAQS was actively under development at the time of the 
court's decision.\64\ Under this circumstance, such coordination was 
efficient and fully consistent with the court's expressed intent to 
minimize market disruption and to continue to address statutory 
obligations to reduce transported pollution where appropriate. In 
contrast, no analogous opportunity is available to coordinate 
withdrawal of the remanded SO2 budgets with another 
rulemaking addressing a more recent PM2.5 NAAQS because 
states' transport obligations with respect to the 2006 24-hour 
PM2.5 NAAQS have already been largely addressed through 
either SIPs or the CSAPR rulemaking, and the Agency has not identified 
interstate transport problems with respect to the 2012 annual 
PM2.5 NAAQS sufficient to justify a new national rulemaking 
at this time.
---------------------------------------------------------------------------

    \64\ As noted in the proposal, for three of the eleven states 
with remanded seasonal NOX budgets addressing the 1997 8-
hour ozone NAAQS--Florida, North Carolina, and South Carolina--the 
EPA found no transport obligations with respect to the 2008 8-hour 
ozone NAAQS and did not establish seasonal NOX budgets 
addressing that NAAQS. 81 FR at 78959.
---------------------------------------------------------------------------

    Third, the EPA lacks authority to rely on a transport obligation 
for Texas with respect to either the 2006 24-hour PM2.5 
NAAQS or the 2012 annual PM2.5 NAAQS as the legal basis to 
support imposing an SO2 budget for the state via a FIP. 
Under CAA section 110(c), the Agency's authority to issue a FIP with 
respect to a particular state obligation arises either when the Agency 
finds that a state has failed to submit a required SIP or when the 
Agency disapproves a submitted SIP. Neither of these predicate events 
has occurred with regard to Texas' transport obligations under either 
the 2006 24-hour PM2.5 NAAQS or the 2012 annual 
PM2.5 NAAQS.\65\ Commenters are correct that data in the 
final CSAPR record, as evaluated by the Agency when CSAPR was 
promulgated, showed that PM2.5 pollution transported from 
Texas to downwind states exceeded the minimum threshold level used to 
establish which states might have transport obligations for the 2006 
24-hour PM2.5 NAAQS. However, as noted in the proposal \66\ 
and discussed above, the 2014 base case air quality projections in the 
final CSAPR record, when reevaluated in light of the D.C. Circuit's 
holdings in EME Homer City II, would support a finding that as of the 
beginning of Phase 2 of the CSAPR trading programs for SO2 
and annual NOX, Texas does not have an ongoing transport 
obligation with respect to the 2006 24-hour PM2.5 NAAQS. 
Thus, even if the EPA had taken final action disapproving Texas' 
outstanding SIP submission addressing transported pollution with regard 
to the 2006 24-hour PM2.5 NAAQS, such a disapproval would no 
longer provide a basis for the Agency to issue a FIP in this instance, 
because without any remaining transport obligation, there is no 
remaining SIP deficiency to address through a FIP.
---------------------------------------------------------------------------

    \65\ Texas has submitted SIPs intended to address its transport 
obligations under each of these NAAQS. In the case of the 2006 24-
hour PM2.5 NAAQS, the EPA has proposed to disapprove the 
state's transport SIP submittal, 76 FR 20602 (April 13, 2011), but 
has yet not taken final action. In the case of the 2012 annual 
PM2.5 NAAQS, the EPA has not yet taken any action on the 
state's transport SIP submittal.
    \66\ 81 FR at 78955 n.5.

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[[Page 45490]]

IV. Sensitivity Analysis Regarding CSAPR Participation as a BART 
Alternative

A. Summary

    As explained in the proposal and summarized in section II.B, the 
EPA amended the Regional Haze Rule in 2012 to authorize states whose 
EGUs participate in CSAPR trading programs for a given pollutant to 
rely on CSAPR participation as a BART alternative for that pollutant. 
The CSAPR-better-than-BART rule rests on an analytic demonstration that 
implementation of CSAPR as expected to take effect at that time would 
achieve greater reasonable progress than BART toward the national goal 
of natural visibility conditions in Class I areas. As part of the 
proposal for this action, the EPA included a sensitivity analysis to 
the 2012 analytic demonstration showing that the 2012 analysis would 
have supported the same conclusion if the actions being taken in 
response to the D.C. Circuit's remand of various CSAPR Phase 2 budgets 
\67\ had been reflected in the 2012 analysis. In this action, upon 
consideration of comments received, the EPA is affirming the 
sensitivity analysis from the proposal that concluded that the 2012 
analytic demonstration is still valid and is consequently affirming 
that there is no need for revision of the CSAPR-better-than-BART rule 
as a result of the changes in CSAPR's geographic scope resulting from 
the Agency's set of responses to the EME Homer City II decision.
---------------------------------------------------------------------------

    \67\ As described in sections II.A and III.D above, in addition 
to this action, the full set of actions being taken to respond to 
the remand includes the 2016 CSAPR Update (see note 14 above) 
withdrawing the remanded seasonal NOX budgets for eleven 
states and establishing new seasonal NOX budgets to 
address a more recent ozone NAAQS for eight of those states, the 
action approving Alabama's SIP revision establishing state CSAPR 
trading programs for SO2 and annual NOX to 
replace the corresponding federal CSAPR trading programs (see note 
53 above), and expected actions to approve proposed SIP revisions 
for Georgia and South Carolina comparable to Alabama's SIP revision 
(see note 57 above).
---------------------------------------------------------------------------

    The original 2012 analytic demonstration supporting participation 
in CSAPR as a BART alternative was based on an air quality modeling 
analysis comparing projected visibility conditions at relevant 
locations (referred to in the proposal and here simply as ``Class I 
areas'') under three scenarios.\68\ The first scenario reflected no 
implementation of either CSAPR or BART, the second scenario reflected 
implementation of presumptive source-specific BART for both 
SO2 and NOX at BART-eligible EGUs nationwide, and 
the third scenario reflected implementation of CSAPR in covered states 
and presumptive source-specific BART for each pollutant in states where 
CSAPR did not apply for that pollutant (the three scenarios are 
referred to here as the base case scenario, the BART scenario, and the 
original CSAPR scenario, respectively). The EPA used the results of the 
three scenarios to compare the projected visibility impacts of CSAPR 
and BART under a two-pronged ``better-than-BART'' test.\69\ The first 
prong--a requirement that visibility must not decline in any Class I 
area under the proposed BART alternative--was evaluated by comparing 
the projected visibility conditions under the original CSAPR scenario 
and the base case scenario. The second prong--a requirement that there 
must be an overall visibility improvement on average across all 
affected Class I areas under the proposed BART alternative relative to 
source-specific BART--was evaluated by comparing the projected 
visibility conditions under the original CSAPR scenario and the BART 
scenario. Based on these comparisons, and also taking account of 
revisions made to CSAPR after the 2011 modeling but before or 
contemporaneous with the 2012 CSAPR-better-than-BART rule, the EPA 
concluded that the original CSAPR scenario satisfied both prongs of the 
test.
---------------------------------------------------------------------------

    \68\ This background is set forth in greater detail in the 
proposal. See 81 FR at 78961-62.
    \69\ As described in the proposal, satisfaction of the two-
pronged test based on an air quality modeling analysis is one of 
three ways that an alternative measure may be demonstrated to be 
``better than BART'' under the Regional Haze Rule. 81 FR at 78957.
---------------------------------------------------------------------------

    The EPA's proposed sensitivity analysis is set forth in detail in 
the proposal for this action.\70\ To reiterate briefly, for the 
sensitivity analysis, the Agency identified a total of five changes in 
CSAPR's geographic scope expected to occur as a result of actions 
responding to the D.C. Circuit's remand: The removal of Florida, North 
Carolina, and South Carolina from CSAPR for seasonal NOX; 
the removal of Texas from CSAPR for annual NOX; and the 
removal of Texas from CSAPR for SO2.\71\ With respect to 
each of the four changes related to NOX, the EPA explained 
that the change would not have caused a sufficiently large change in 
the modeled NOX emissions in the original CSAPR scenario to 
materially alter the visibility impacts comparison. For North Carolina 
and South Carolina, this assessment was based on the fact that the 
states' EGUs would, or were expected to, remain subject to CSAPR for 
annual NOX after the end of their CSAPR obligations for 
seasonal NOX.\72\ For Florida and Texas, this assessment was 
based on the small magnitudes of the differences in projected total 
NOX emissions from the EGUs in each of those states between 
the original CSAPR scenario and the relevant other modeled scenarios, 
combined with the dominance of sulfate impacts compared to nitrate 
impacts on visibility (especially in the South).\73\ With respect to 
the removal of Texas from CSAPR for SO2, the EPA explained 
that the change would have caused a large reduction in the Texas 
SO2 emissions as modeled in the original CSAPR scenario,\74\ 
thereby causing the visibility impacts comparison to support the 
Agency's determination that CSAPR participation met the criteria for a 
BART alternative even more strongly than the comparison as originally 
performed in 2012. Thus, because the only material change from the 
original 2012 analytic demonstration would be the relative visibility 
improvement in a revised CSAPR scenario resulting from the removal of 
Texas from CSAPR for SO2, the sensitivity analysis as 
proposed indicated that the 2012 analytic demonstration remains valid.
---------------------------------------------------------------------------

    \70\ 81 FR at 78961-64.
    \71\ For purposes of the sensitivity analysis, the EPA 
conservatively did not consider the increased stringency of the 
CSAPR seasonal NOX budgets established in the CSAPR 
Update. See generally 81 FR 74504.
    \72\ 81 FR at 78962.
    \73\ Id. at 78962 (Florida), 78963 (Texas).
    \74\ As noted above and discussed in the proposal, the original 
CSAPR scenario reflected projected implementation of CSAPR in 
covered states and presumptive source-specific BART in states where 
CSAPR did not apply for a pollutant. If Texas had not been expected 
to be covered by CSAPR for SO2, the CSAPR scenario would 
therefore have reflected SO2 emissions from Texas EGUs 
consistent with the implementation of presumptive source-specific 
SO2 BART instead of participation in CSAPR. While EPA 
projected that the CSAPR region overall would have substantially 
lower SO2 emissions under CSAPR than under source-
specific BART, for some individual states, including Texas, 
SO2 emissions under source-specific BART were projected 
to be lower than under CSAPR. Thus, removing Texas from CSAPR for 
SO2 in the CSAPR-better-than-BART analytic demonstration 
would have resulted in a decrease in projected SO2 
emissions in the CSAPR scenario as modeled for the demonstration. 
See 81 FR at 78962-63. In the proposal, the EPA identified the 
minimum amount of the projected decrease in Texas SO2 
emissions as 127,300 tons, based on the difference between projected 
Texas SO2 emissions under the original CSAPR and BART 
scenarios. Id.; see also ``Projected Changes in Texas Emissions, 
Fossil Generation, and Fuel Usage Between the Base Case, BART, and 
Original CSAPR Scenarios,'' available in the docket for this action.
---------------------------------------------------------------------------

    The EPA received substantive comments from two parties with respect 
to the proposed sensitivity analysis. One commenter agrees with the 
EPA's conclusion and with all but one detail of the EPA's methodology 
(which, if changed as suggested by the commenter, would strengthen the 
Agency's conclusion). The other commenter does not agree with either 
the conclusion or

[[Page 45491]]

the methodology, providing several reasons. The remainder of this 
section summarizes the opposing commenter's principal comments on this 
topic and provides the Agency's response.

B. Continued CSAPR Participation by Georgia and South Carolina

    The commenter states that in order to analyze the impacts on the 
CSAPR-better-than-BART analytic demonstration from changes caused by 
the remand, in addition to any other changes evaluated, the EPA must 
also evaluate the removal of Georgia and South Carolina from CSAPR's 
SO2 programs, both because the D.C. Circuit remanded their 
SO2 budgets as invalid and because in the commenter's view 
it is impermissible to rely in such a sensitivity analysis on mere 
commitments from those states to submit CSAPR SIPs in the future. 
Further, according to the commenter, allowing these states to continue 
to participate in CSAPR and then rely on such participation as a BART 
alternative after their SO2 budgets have been remanded would 
be inconsistent with the EPA's previous determinations that states 
could no longer indefinitely rely on participation in the former Clean 
Air Interstate Rule (CAIR) trading programs as a BART alternative after 
the D.C. Circuit found CAIR to be an invalid rule that must be 
replaced.\75\
---------------------------------------------------------------------------

    \75\ In 2005, the EPA promulgated the Clean Air Interstate Rule 
(CAIR) addressing certain interstate air pollution reduction 
obligations, 70 FR 25162 (May 12, 2005), and amended the Regional 
Haze Rule to allow participation in CAIR to be relied on as a BART 
alternative (the CAIR-better-than-BART rule), 70 FR 39104 (July 6, 
2005). The D.C. Circuit upheld the CAIR-better-than-BART rule, 
Utility Air Regulatory Group v. EPA, 471 F.3d 1333 (D.C. Cir. 2006), 
but later found CAIR invalid and remanded that rule to the Agency 
for replacement, North Carolina v. EPA, 531 F.3d 896 (D.C. Cir. 
2008), modified on rehearing, 550 F.3d 1176 (D.C. Cir. 2008). The 
Agency then replaced CAIR with CSAPR, 76 FR 48208, and replaced the 
CAIR-better-than-BART rule with the CSAPR-better-than-BART rule, 77 
FR 33642. In addition, following the remand of CAIR, the Agency 
disapproved SIP submissions for several states seeking to rely on 
CAIR as a BART alternative, e.g., 77 FR at 33647.
---------------------------------------------------------------------------

    The EPA disagrees with the comment that the Agency must consider 
Georgia and South Carolina ineligible to continue to participate in 
CSAPR's SO2 programs as a consequence of the remand of their 
FIP budgets. The CSAPR regulations expressly provide for approval of 
CSAPR SIPs that meet certain conditions as replacements for CSAPR FIPs, 
and Georgia and South Carolina (as well as Alabama) have elected to 
submit such SIPs. The comparison that the commenter draws to the EPA's 
previous findings that states may no longer rely on participation in 
CAIR as a BART alternative is inapt, because the basis for such 
previous findings was that CAIR itself (including its trading programs) 
would not exist, not that particular CAIR budgets were invalid. Here, 
the CSAPR trading program will still exist, making it possible for the 
states to continue to participate in CSAPR through voluntary SIPs 
notwithstanding the invalidation of the EPA's authority to require 
compliance with the remanded budgets through FIPs addressing the 
states' transport obligations.
    The EPA considers the comment about reliance on mere commitments to 
submit SIPs to be largely moot because in the interval between 
submission of the comment and finalization of this action, Georgia has 
submitted its SIP revision and South Carolina has submitted its 
proposed state regulations and has requested that EPA begin the SIP 
approval process under the Agency's parallel processing procedure.\76\ 
Each of the state trading program rules includes a state budget for 
SO2 or annual NOX emissions equal to that state's 
current FIP budget. To the extent the commenter believes that for 
purposes of a sensitivity analysis the Agency may rely only on a SIP 
that has been approved and not on a SIP or proposed state rule that has 
been submitted for EPA approval but not yet approved, the Agency 
disagrees. Both states' rules take the approach of incorporating by 
reference the federal CSAPR trading program rules, including the 
relevant budget amounts, so there are no substantive differences 
between the state trading program rules being adopted by the states for 
inclusion in their SIPs and the federal trading program rules that are 
being replaced. The Agency has proposed to approve both states' SIP 
revisions \77\ and at this time is unaware of any reason why the 
proposed approvals should not be finalized. In these circumstances, the 
EPA believes it is reasonable to rely on the SIP submittals for 
purposes of supporting an analytic assumption that Georgia and South 
Carolina will continue to participate in CSAPR's SO2 and 
annual NOX programs at the states' current budget 
levels.\78\
---------------------------------------------------------------------------

    \76\ See supra notes 55 and 56.
    \77\ See supra note 57.
    \78\ As discussed in section III.D above, both states continue 
to participate in the CSAPR SO2 and annual NOX 
programs through FIPs while Agency action on their SIP submittals is 
pending.
---------------------------------------------------------------------------

C. Appropriateness of Continued Reliance on Original CSAPR-Better-Than-
BART Analysis

    The commenter states that the sensitivity analysis is arbitrary 
because it is based on outdated material, and that instead of 
evaluating whether the 2012 analytic demonstration remains valid, the 
EPA must perform an entirely new analytic demonstration based on a new 
air quality modeling analysis using more current data.
    The EPA disagrees with this comment. While criticizing aspects of 
the Agency's analytic methodology, the commenter does not dispute that 
the sensitivity analysis as conducted by the EPA using that methodology 
shows that the 2012 analytic demonstration would have been strengthened 
rather than weakened by the changes in CSAPR's geographic scope that 
are occurring as a result of the D.C. Circuit's remand. (The 
methodological criticisms are addressed as the next comment below.) 
Further, the commenter offers no compelling support for the suggestion 
that, in the absence of any reason to doubt the conclusion from the 
2012 analytic demonstration, the EPA must nevertheless conduct an 
entirely new demonstration. As an asserted legal rationale for the need 
for a new analysis, the commenter cites the Regional Haze Rule 
provisions for approval of BART alternatives, noting that the provision 
that the EPA followed in approving the CSAPR-better-than-BART rule 
requires a demonstration based on an air quality modeling analysis.\79\ 
The EPA has performed one such air quality modeling analysis and in 
this action has shown that the analysis already performed would 
continue to support a conclusion that CSAPR meets the criteria for a 
BART alternative notwithstanding changes in CSAPR's geographic scope. 
Contrary to the commenter's suggestion, the regulations do not say that 
the EPA must perform an entirely new analysis. Similarly, the 
commenter's assertion that changes in industry data since 2011 
necessitate a new analytic demonstration amounts to a call for 
recurring demonstrations that a BART alternative results in greater 
reasonable progress than BART as the industry evolves, rather than a 
one-time demonstration when the alternative is approved. The 
regulations include no such requirement for recurring demonstrations.
---------------------------------------------------------------------------

    \79\ See 40 CFR 51.308(e)(3).
---------------------------------------------------------------------------

D. Possible Changes in the Geographic Distribution of Emissions

    The commenter states that the EPA's methodology for conducting the 
sensitivity analysis as set forth in the proposal failed to adequately 
consider whether changes in a revised CSAPR scenario regarding the 
geographic distribution of emissions across states or

[[Page 45492]]

within individual states might lead to violations of the analytic 
criteria that the EPA relied on to find that CSAPR qualifies as a BART 
alternative. In particular, the commenter raises the theoretical 
possibility that, in a revised CSAPR scenario where Texas EGUs no 
longer participate in CSAPR for SO2, some individual sources 
in other CSAPR states could buy additional allowances and increase 
their emissions, and that such increases in emissions in turn could 
cause adverse visibility impacts in some individual Class I areas 
(thereby violating the first prong of the two-pronged test described 
above). More generally, the commenter asserts that without new modeling 
the EPA ``has no data'' and has ``simply assume[d]'' that the two 
prongs of the test would be satisfied under such a revised scenario.
    As an initial matter, the EPA disagrees with the commenter's 
summary characterization of the proposed sensitivity analysis as not 
being grounded in data. To the contrary, the Agency's proposed 
conclusions explicitly rely on data drawn from the modeling results in 
the record for the CSAPR-better-than-BART rule. The EPA explained in 
the proposal, first, how the data from the earlier rulemaking record 
showed that a revised CSAPR scenario would reflect a projected 
reduction in Texas SO2 emissions of 127,300 tons (or more) 
\80\ along with projected increases in Florida and Texas NOX 
emissions of at most a few thousand tons and, second, why it was 
logical to conclude from these projected emissions changes that, 
relative to the modeled BART and base case scenarios, the revised CSAPR 
scenario would have shown even larger visibility improvements than the 
original CSAPR scenario.\81\ The commenter provides no data of any 
kind, let alone data that might challenge the data presented in the 
proposal.
---------------------------------------------------------------------------

    \80\ The 127,300-ton amount was described in the proposal as the 
minimum reduction in projected Texas SO2 emissions 
because it did not reflect a 50,500-ton increase in the Texas 
SO2 budget that occurred after the original CSAPR 
scenario was modeled. If that budget increase had been reflected in 
the original CSAPR scenario, modeled Texas EGU SO2 
emissions in that scenario would likely have been higher, 
potentially by the full 50,500-ton amount. The CSAPR budget increase 
would have had no effect on Texas EGUs' modeled SO2 
emissions under BART. As a consequence, the 127,300-ton minimum 
estimate of the reduction in projected Texas SO2 
emissions caused by removing Texas EGUs from CSAPR for 
SO2, which are computed as the difference between Texas 
EGUs' collective emissions in the original CSAPR scenario and the 
BART scenario, may be understated by as much as 50,500 tons.
    \81\ 81 FR at 78962-64.
---------------------------------------------------------------------------

    Turning to the commenter's more specific methodological criticism--
that the Agency has not sufficiently considered whether shifts in the 
geographic distribution of emissions might lead to violations of the 
two-pronged test--the EPA agrees that the potential for such shifts was 
not expressly addressed in the sensitivity analysis as proposed. For 
the final action, the EPA has therefore performed further analysis to 
address this comment, focusing on the specific circumstance identified 
by the commenter--shifts associated with the removal of Texas EGUs from 
CSAPR for SO2--because the Agency agrees that this is the 
most significant change to CSAPR among the actions that have been or 
are expected to be taken in response to the D.C. Circuit's remand.\82\ 
The further analysis is based on state- and unit-level data 
disaggregated from the projections of electricity generation, fuel 
usage, and emissions developed for the base case, BART, and original 
CSAPR scenarios that were compared in the 2012 analytic 
demonstration.\83\
---------------------------------------------------------------------------

    \82\ As summarized above, the Agency explained in the proposal 
that the removal of Florida, North Carolina, South Carolina, and 
Texas EGUs from CSAPR for either seasonal or annual NOX, 
as applicable, would not have caused sufficient changes in modeled 
NOX emissions in a revised CSAPR scenario to materially 
alter the visibility impacts comparison, in some instances because 
the EGUs would remain subject to another CSAPR NOX 
program and in some instances because of the small magnitudes of the 
differences in projected total NOX emissions from the 
EGUs in each of those states between the original CSAPR scenario and 
the relevant other modeled scenarios, combined with the dominance of 
sulfate impacts compared to nitrate impacts on visibility 
(especially in the South). The EPA believes these same factors 
likewise indicate that the visibility impacts of any potential 
shifts in the geographic distribution of NOX emissions 
related to removal of these states from the CSAPR NOX 
programs would not be material to either prong of the two-pronged 
visibility impacts comparison.
    \83\ The state- and plant-level data are derived from the unit-
level data in three spreadsheets included in the final CSAPR-better-
than-BART rulemaking record and available in the docket for this 
action: IPM Parsed File for CSAPR Base Case Scenario 2014 (EPA-HQ-
OAR-2011-0729-0004), IPM Parsed File for National BART Scenario 2014 
(EPA-HQ-OAR-2011-0729-0008), and IPM Parsed File for CSAPR-BART 
Scenario 2014 (EPA-HQ-OAR-2011-0729-0006).
---------------------------------------------------------------------------

    Based on this additional analysis, the EPA finds that, in addition 
to the projected SO2 emissions reduction of at least 127,300 
tons in Texas identified in the proposal,\84\ a revised CSAPR scenario 
without Texas in CSAPR for SO2 could also reflect a 
projected aggregated increase in SO2 emissions of 
approximately 22,300 tons in the six other states in the CSAPR 
SO2 Group 2 trading program (Alabama, Georgia, Kansas, 
Minnesota, Nebraska, and South Carolina). The reason for this 
adjustment is that in the original CSAPR scenario, Texas EGUs were 
projected to emit 22,300 tons of SO2 in excess of the 
state's SO2 budget.\85\ This would have been possible 
through the use of allowances purchased from EGUs in other 
SO2 Group 2 states. Under a revised CSAPR scenario where 
Texas EGUs are no longer part of the CSAPR trading program, Texas EGUs 
would no longer purchase the 22,300 allowances from the other states, 
and the EGUs in those other states could potentially use those 
allowances to increase their own collective SO2 emissions. 
Much or all of the total potential increase in emissions in the other 
states would be projected to occur in Alabama and Georgia, because in 
the original CSAPR scenario the collective emissions from Kansas EGUs 
were projected to already be at the state's ``assurance level''--the 
emissions level above which EGUs trigger a CSAPR provision requiring 
the surrender of three allowances instead of one allowance per ton of 
emissions--and the collective emissions from Minnesota, Nebraska, and 
South Carolina EGUs were projected to already be close to their states' 
respective assurance levels.\86\ After accounting for the potential 
22,300-ton offsetting adjustment, the net regional SO2 
reduction under the revised CSAPR scenario relative to the original 
CSAPR scenario would be projected to be approximately 105,000 tons (or 
more) instead of 127,300 tons (or more) as described in the proposed 
sensitivity analysis.\87\ For the reasons below, the EPA has considered 
both the projected decrease in Texas SO2 emissions and the 
projected aggregated increase in SO2

[[Page 45493]]

emissions in the other states and has concluded that the two-pronged 
CSAPR-better-than-BART test described above would continue to be 
satisfied.
---------------------------------------------------------------------------

    \84\ See supra note 74.
    \85\ See ``Projected Interstate Trading of CSAPR SO2 
Group 2 Allowances in the Original CSAPR Scenario,'' available in 
the docket for this action.
    \86\ Id.
    \87\ It is possible that if the original CSAPR scenario that 
includes Texas in CSAPR for SO2 had been remodeled to 
include the 50,500 increase in the Texas SO2 budget 
described in the proposal and in footnote 80, Texas EGUs would have 
been projected to purchase either more or less than 22,300 
allowances from EGUs in other CSAPR SO2 Group 2 states, 
and that a revised CSAPR scenario in which Texas was removed from 
CSAPR for SO2 would therefore have shown the other Group 
2 states increasing their SO2 emissions by this different 
amount. Regardless of the amount or direction of any modeled change 
in Texas EGUs' CSAPR allowance purchases, that change would 
generally have been matched by an equal and opposite change in Texas 
EGUs' projected emissions under CSAPR, with the result that the 
overall net projected reduction in emissions caused by removing 
Texas from CSAPR for SO2 would continue to be at least 
105,000 tons. The maximum amount of CSAPR SO2 allowances 
that Texas could purchase from other states and use in a given year 
without incurring 3-for-1 allowance surrender requirements is 
approximately 53,000 tons, which is the amount of Texas' 
SO2 variability limit--the difference between the state's 
budget and its assurance level--under the CSAPR regulations. See 40 
CFR 97.710(b)(7).
---------------------------------------------------------------------------

    As summarized above, the first prong of the two-pronged test 
requires that visibility conditions must not decline in any Class I 
area. In the 2012 analytic demonstration, the EPA evaluated this prong 
by comparing visibility impacts at each affected Class I area under the 
original CSAPR scenario and the base case scenario. The situation 
identified by the commenter in which emissions under a revised CSAPR 
scenario might rise at some individual EGUs sufficiently to cause a 
decline in visibility at some individual Class I area relative to 
visibility conditions in the base case scenario--that is, without 
either CSAPR or BART--would be a very unusual event and likely can be 
ruled out as impossible, or nearly so, in a scenario such as the 
revised CSAPR scenario being considered. Under the base case scenario, 
EGUs incur no cost at all under CSAPR for emitting a ton of 
SO2. In contrast, under either the original CSAPR scenario 
or a revised CSAPR scenario, EGUs would incur some cost per ton of 
SO2 emissions under CSAPR, and where that new cost is the 
principal change from the base case scenario, EGUs that emit 
SO2 would generally be projected to either decrease or 
maintain their emissions relative to the base case scenario where that 
cost was not present. If in a revised CSAPR scenario, allowances are 
more plentiful and the cost incurred per ton of SO2 
emissions therefore is less than the cost per ton under the original 
CSAPR scenario, some EGUs that emit SO2 would be projected 
to reduce their SO2 emissions by a smaller amount than in 
the original CSAPR scenario, but they generally would not be projected 
to significantly increase their emissions relative to the base case 
scenario. An exception to this general principle could occur if some 
other factor influencing EGUs' operating decisions, such as electricity 
demand or relative fuel prices, also changed. The EPA therefore 
considered whether the removal of Texas from CSAPR could have been 
projected to result in any material change in demand for generation 
from other states or relative fuel prices in other states in a revised 
CSAPR scenario compared to the original CSAPR scenario.\88\
---------------------------------------------------------------------------

    \88\ Although the analysis focuses on other CSAPR states, 
consistent with the concerns raised by the commenter, the EPA notes 
that absent changes in generation demand or relative fuel prices, 
removal of Texas from CSAPR would also be expected not to affect the 
operating decisions of EGUs in non-CSAPR states.
---------------------------------------------------------------------------

    With respect to the possibility of changes in electricity demand in 
other states, record data show that, relative to the original CSAPR 
scenario, aggregated 2014 generation from fossil-fired Texas EGUs was 
projected to increase by 0.2% in the BART scenario (which is used here 
as a proxy representing the operating behavior of Texas EGUs in a 
revised CSAPR scenario), indicating that removal of Texas EGUs from 
CSAPR for SO2 and implementation of SO2 BART 
would not be projected to result in an increase in emissions outside 
Texas caused by a shift in generation from Texas to other states.\89\
---------------------------------------------------------------------------

    \89\ See ``Projected Changes in Texas Emissions, Fossil 
Generation, and Fuel Usage Between the Base Case, BART, and Original 
CSAPR Scenarios,'' available in the docket for this action. Because 
there is little difference in NOX emissions from Texas 
EGUs between the original CSAPR scenario, the BART scenario, and the 
base case scenario, id., the EPA considers the BART scenario a 
reasonable emissions proxy for a revised CSAPR scenario in which 
Texas EGUs would be subject to BART for SO2 but not for 
NOX.
---------------------------------------------------------------------------

    With respect to changes in relative fuel prices in other states, 
record data show that, relative to the original CSAPR scenario, in the 
BART scenario Texas EGUs were projected to decrease their use of 
subbituminous coal by 68 trillion Btus (TBtu), increase their use of 
lignite by 66 TBtu, and increase their use of other fossil fuels 
(predominantly natural gas) by 11 TBtu.\90\ The changes in projected 
Texas usage of subbituminous coal and natural gas are less than 1% of 
the projected total industry usage of those fuels nationwide under the 
original CSAPR scenario, indicating that there is no reason to expect 
material impacts on prices or usage of those fuels in other states. 
Unlike subbituminous coal and natural gas, lignite is an inherently 
local fuel that is consumed near the point of extraction because the 
fuel's low energy content per unit of weight makes shipment over long 
distances uneconomic. Thus, although the increase in Texas EGUs' 
projected usage of lignite is fairly large (8.2% of projected national 
usage of lignite under the original CSAPR scenario), any resulting 
increase in the local prices of lignite would not be expected to affect 
the mix of fuels used in other states.
---------------------------------------------------------------------------

    \90\ See id.
---------------------------------------------------------------------------

    For further confirmation of the applicability here of the general 
principle discussed above--namely, that in a modeled CSAPR scenario, 
EGUs that emit SO2 would generally be projected to either 
decrease or maintain their emissions and not to increase their 
emissions relative to the base case scenario--the EPA compared the 
projected unit-level SO2 emissions in the original CSAPR and 
base case scenarios for all coal-fired EGUs in the seven states in the 
CSAPR SO2 Group 2 trading program. The results of the 
comparison clearly indicate that the general principle applies in this 
instance: 77 Units were projected to reduce their SO2 
emissions by 1,000 tons or more (in amounts up to 57,000 tons), 106 
units were projected to essentially maintain their SO2 
emissions (increasing or decreasing by between 0 and 1,000 tons), and 2 
units were projected to increase their SO2 emissions by 
approximately 1,100 tons each.\91\ A similar comparison at the state 
level shows that collective SO2 emissions from the sets of 
EGUs in each of the seven states were also projected to decrease from 
the base case scenario to the original CSAPR scenario (in amounts 
ranging from 1,900 tons for Nebraska to 248,800 tons for Alabama).\92\ 
In combination with the data above showing that removal of Texas from 
CSAPR for SO2 would not be expected to cause changes in 
demand for generation or relative fuel prices in other states, the EPA 
believes that these data on how EGUs were projected to comply with 
CSAPR in the original CSAPR scenario indicate that in a revised CSAPR 
scenario where Texas is removed from CSAPR for SO2 and 
22,300 additional allowances (or up to 53,000 allowances, as noted 
earlier \93\) therefore become available to the EGUs in the other 
SO2 Group 2 states, few if any EGUs would respond to the 
availability of the additional allowances by increasing their emissions 
materially above their emissions in the base case scenario. Further, 
even if some EGUs did increase their emissions above their emissions in 
the base case scenario, because of the regional nature of sulfate 
formation from SO2 emissions and the very large decreases in 
SO2 emissions across the broader region, the EPA believes 
that any such local increase would be unlikely to cause localized 
visibility degradation in any Class I area near a CSAPR state affected 
by the removal of Texas from CSAPR for SO2. In consequence, 
the Agency finds it reasonable to conclude that in such a revised CSAPR 
scenario, no such Class I areas would experience declines in visibility 
conditions relative to the base case scenario.
---------------------------------------------------------------------------

    \91\ See ``Projected Changes in Unit-Level Emissions Between the 
Base Case and Original CSAPR Scenarios,'' available in the docket 
for this action.
    \92\ See id.
    \93\ See supra note 87.
---------------------------------------------------------------------------

    The second prong of the two-pronged test requires the average 
projected

[[Page 45494]]

visibility improvement across all affected Class I areas to be greater 
under the BART alternative than under BART. In the proposal, the EPA 
proposed to conclude that this prong would be easily satisfied under 
the revised CSAPR scenario because Texas EGUs would be modeled in the 
revised CSAPR scenario as subject to SO2 BART instead of 
being subject to CSAPR for SO2, and the record data showed 
that Texas EGUs' projected SO2 emissions would be at least 
127,300 tons lower under BART than under CSAPR. As discussed above, 
based on further analysis the EPA concludes that the decrease in 
projected Texas SO2 emissions could potentially be partially 
offset by an increase in projected SO2 emissions in other 
CSAPR SO2 Group 2 states, most likely Alabama or Georgia. 
The EPA believes that such a revised CSAPR scenario would continue to 
show greater average visibility improvement than the BART scenario (and 
greater than the original CSAPR scenario), again easily passing the 
second prong of the two-pronged test. Any reduction in visibility 
improvement in Class I areas near Alabama, Georgia, or the other Group 
2 states relative to the original CSAPR scenario would be more than 
offset by greater visibility improvement in Class I areas near 
Texas.\94\ Due to the regional nature of sulfate particulate matter 
formation, it is highly likely that, like the original CSAPR scenario, 
the revised CSAPR scenario would show greater visibility improvement on 
average across all Class I areas than the BART scenario. The commenters 
did not present any information to indicate otherwise, and the EPA is 
not aware of any such information.
---------------------------------------------------------------------------

    \94\ The CSAPR-better-than-BART record shows that the Class I 
areas most impacted by Texas were projected to have greater modeled 
visibility improvement in the BART scenario (on the 20% best days) 
than in the CSAPR scenario. This indicates that there would have 
been additional visibility improvement in a revised CSAPR scenario 
in which Texas is not in CSAPR for SO2 and is therefore 
modeled at BART SO2 levels. Note that the average 
visibility improvements across all affected Class I areas as 
computed in the original CSAPR and BART scenarios are much closer on 
the 20% best days than on the 20% worst days. Therefore, in 
determining whether the second prong of the two-pronged test will be 
passed under a revised CSAPR scenario, the modeled results on the 
20% best days are particularly important.
---------------------------------------------------------------------------

E. Validity of 2012 Analytic Demonstration Prior to CSAPR Changes

    Finally, the commenter asserts that regardless of the character of 
the sensitivity analysis itself, the original 2012 CSAPR-better-than-
BART analytic demonstration was arbitrary, rendering any sensitivity 
analysis performed regarding the original demonstration arbitrary. In 
support of this claim, the commenter incorporates by reference all 
criticisms of the original analytic demonstration contained in the 
comments submitted by the commenter in the original CSAPR-better-than-
BART rulemaking as well as all criticisms contained in the commenter's 
brief in the pending litigation challenging the CSAPR-better-than-BART 
rule.
    The EPA rejects these comments as both improperly raised and 
outside the scope of this proceeding. The EPA appreciates the value of 
public input in the rulemaking process and seeks to fulfill its legal 
obligation to consider and respond to all substantive comments that are 
``raised with reasonable specificity,'' \95\ but catch-all references 
to whatever statements may have been made in another proceeding do not 
meet this standard. Moreover, even if they had been properly raised, 
comments concerning the legal validity of the original 2012 analytic 
demonstration are beyond the scope of this rulemaking, which concerns 
only the sensitivity analysis addressing the effect on the 2012 
analytic demonstration of changes in CSAPR's geographic scope resulting 
from the D.C. Circuit's remand (as well as the withdrawal of Texas 
CSAPR FIP requirements for SO2 and annual NOX and 
the finding as to Texas' remaining transport obligation under CAA 
section 110(a)(2)(D)(i)(I) regarding the 1997 annual PM2.5 
NAAQS). Arguments concerning the original 2012 analytic demonstration 
should be, and have been, raised in the original CSAPR-better-than-BART 
rulemaking and in the pending litigation over that rule.
---------------------------------------------------------------------------

    \95\ CAA section 307(d)(7)(B).
---------------------------------------------------------------------------

V. Description of Amendments to Regulatory Text

    In order to implement the withdrawal of the FIP provisions 
requiring Texas EGUs to participate in the CSAPR NOX Annual 
Trading Program and the CSAPR SO2 Group 2 Trading Program 
with regard to emissions occurring in Phase 2 of those programs, the 
EPA is amending the regulatory text at 40 CFR 52.38(a)(2), 52.39(c), 
52.2283(c), and 52.2284(c) to provide that Texas EGUs are subject to 
requirements under these two programs with regard to emissions 
occurring in 2015 and 2016 only. Conforming amendments to cross-
references are being made at Sec.  52.38(a)(3), (a)(4), (a)(5), (a)(6), 
and (a)(8)(iii) and Sec.  52.39(g), (h), (i), (j), and (m)(3).
    The EPA is also clarifying the CSAPR regulations by adding the 
introductory headings ``Annual emissions'' and ``Ozone season 
emissions'' to Sec.  52.38(a) and (b), respectively, and by amending 
the wording of the regulatory text at Sec. Sec.  52.38(b)(2)(i) and 
52.39(b) to parallel the wording of the newly amended regulatory text 
at Sec. Sec.  52.38(a)(2)(i) and 52.39(c)(1). These editorial 
clarifications do not alter any existing regulatory requirements.
    Finally, the EPA is correcting the CSAPR regulations applicable to 
South Carolina EGUs by amending the regulatory text at Sec.  52.2141(b) 
to reference CSAPR SO2 Group 2 allowances and 40 CFR part 
97, subpart DDDDD instead of CSAPR SO2 Group 1 allowances 
and 40 CFR part 97, subpart CCCCC. The corrections make the text at 
Sec.  52.2141(b) consistent with the existing text at Sec.  52.2141(a), 
and the two paragraphs together now correctly reflect the existing 
regulatory requirements applicable to South Carolina EGUs as already 
set forth at Sec.  52.39(c) and (k).

VI. Statutory and Executive Order Reviews

    Additional information about these statutes and Executive Orders 
can be found at http://www2.epa.gov/laws-regulations/laws-and-executive-orders.

A. Executive Order 12866: Regulatory Planning and Review, and Executive 
Order 13563: Improving Regulation and Regulatory Review

    This action is not a significant regulatory action and therefore 
was not submitted to the Office of Management and Budget (OMB) for 
review.

B. Executive Order 13771: Reducing Regulations and Controlling 
Regulatory Costs

    This action is not expected to be an Executive Order 13771 
regulatory action because this action is not significant under 
Executive Order 12866.

C. Paperwork Reduction Act

    This action does not impose any new information collection burden 
under the Paperwork Reduction Act. The OMB has previously approved the 
information collection activities contained in the existing regulations 
and has assigned OMB control number 2060-0667. The withdrawal of the 
FIP provisions in this action will eliminate the obligations of Texas 
sources to comply with the existing monitoring, recordkeeping, and 
reporting requirements under the CSAPR SO2 Group 2 Trading 
Program and the CSAPR NOX Annual Trading Program.

[[Page 45495]]

D. Regulatory Flexibility Act

    I certify that this action will not have a significant economic 
impact on a substantial number of small entities under the Regulatory 
Flexibility Act. In making this determination, the impact of concern is 
any significant adverse economic impact on small entities. An agency 
may certify that a rule will not have a significant economic impact on 
a substantial number of small entities if the rule relieves regulatory 
burden, has no net burden, or otherwise has a positive economic effect 
on the small entities subject to the rule. This action withdraws 
existing regulatory requirements for some entities and does not impose 
new requirements on any entity. We have therefore concluded that this 
action will either relieve or have no net regulatory burden for all 
directly regulated small entities.

E. Unfunded Mandates Reform Act

    This action does not contain any unfunded mandate as described in 
the Unfunded Mandates Reform Act, 2 U.S.C. 1531-1538, and does not 
significantly or uniquely affect small governments. The action imposes 
no enforceable duty on any state, local, or tribal governments or the 
private sector. This action simply eliminates certain federal 
regulatory requirements that the D.C. Circuit has held invalid.

F. Executive Order 13132: Federalism

    This action does not have federalism implications. It will not have 
substantial direct effects on the states, on the relationship between 
the national government and the states, or on the distribution of power 
and responsibilities among the various levels of government. This 
action simply eliminates certain federal regulatory requirements that 
the D.C. Circuit has held invalid.

G. Executive Order 13175: Consultation and Coordination With Indian 
Tribal Governments

    This action does not have tribal implications as specified in 
Executive Order 13175. It will not have substantial direct effects on 
tribal governments, on the relationship between the federal government 
and Indian tribes, or on the distribution of power and responsibilities 
between the federal government and Indian tribes. This action simply 
eliminates certain federal regulatory requirements that the D.C. 
Circuit has held invalid. Thus, Executive Order 13175 does not apply to 
this action. Consistent with the EPA Policy on Consultation and 
Coordination with Indian Tribes, the EPA consulted with tribal 
officials while developing CSAPR. A summary of that consultation is 
provided in the preamble for CSAPR, 76 FR 48208, 48346 (August 8, 
2011).

H. Executive Order 13045: Protection of Children From Environmental 
Health and Safety Risks

    The EPA interprets Executive Order 13045 as applying only to those 
regulatory actions that concern environmental health or safety risks 
that the EPA has reason to believe may disproportionately affect 
children, per the definition of ``covered regulatory action'' in 
section 2-202 of the Executive Order. This action is not subject to 
Executive Order 13045 because it simply eliminates certain federal 
regulatory requirements that the D.C. Circuit has held invalid.

I. Executive Order 13211: Actions That Significantly Affect Energy 
Supply, Distribution, or Use

    This action is not subject to Executive Order 13211, because it is 
not a significant regulatory action under Executive Order 12866.

J. National Technology Transfer Advancement Act

    This rulemaking does not involve technical standards.

K. Executive Order 12898: Federal Actions To Address Environmental 
Justice in Minority Populations and Low-Income Populations

    The EPA believes that this action is not subject to Executive Order 
12898 because it does not establish an environmental health or safety 
standard. This action simply eliminates certain federal regulatory 
requirements that the D.C. Circuit has held invalid. Consistent with 
Executive Order 12898 and the EPA's environmental justice policies, the 
EPA considered effects on low-income populations, minority populations, 
and indigenous peoples while developing CSAPR. The process and results 
of that consideration are described in the preamble for CSAPR, 76 FR 
48208, 48347-52 (August 8, 2011).

L. Congressional Review Act

    This action is subject to the Congressional Review Act, and the EPA 
will submit a rule report to each House of the Congress and to the 
Comptroller General of the United States. This action is not a ``major 
rule'' as defined by 5 U.S.C. 804(2).

M. Judicial Review and Determinations Under CAA Section 307(b)(1) and 
(d)

    CAA section 307(b)(1) indicates which federal appellate courts have 
venue for petitions of review of final actions by the EPA. This section 
provides, in part, that petitions for review must be filed in the D.C. 
Circuit Court of Appeals if (i) the agency action consists of 
``nationally applicable regulations promulgated, or final action taken, 
by the Administrator,'' or (ii) such action is locally or regionally 
applicable, if ``such action is based on a determination of nationwide 
scope or effect and if in taking such action the Administrator finds 
and publishes that such action is based on such a determination.'' This 
final action is ``nationally applicable.'' In addition, the EPA finds 
that all aspects of this action are based on a determination of 
``nationwide scope and effect'' within the meaning of section 
307(b)(1).
    First, the EPA's withdrawal of FIP requirements under the CSAPR 
program for Texas is being undertaken in response to a remand by the 
D.C. Circuit in litigation that challenged numerous aspects of CSAPR 
with implications for multiple states and resulted in the remand of 
fifteen budgets for thirteen states. Retaining review in the D.C. 
Circuit is appropriate and avoids the potential that another court is 
forced to interpret the remand order of a sister circuit. Also, the 
finding that, after the FIP withdrawal, Texas has no remaining 
obligation to address interstate transport with respect to the 1997 
annual PM2.5 NAAQS is based on a common core of factual 
findings and analyses concerning the transport of pollutants between 
the different states subject to CSAPR, which is a nationally applicable 
program. Further, this action is based on a determination that modifies 
the scope and effect of CSAPR; thus, any judicial review of this action 
will necessarily implicate the national-level policies, technical 
analyses, or interpretations that undergird this nationwide program.
    Second, in express consideration of the effect of the withdrawal of 
Texas FIP requirements accomplished through this final action, the EPA 
is affirming the continued validity of 40 CFR 51.308(e)(4), a 
regulatory provision available to each of the 27 States whose sources 
currently participate in one or more CSAPR trading programs. This 
determination affects the rights and interests of regulated parties and 
other stakeholders throughout the eastern United States relying on or 
otherwise affected by that regulatory provision.
    For these reasons, this final action is nationally applicable and, 
in addition,

[[Page 45496]]

the Administrator finds that this final action is based on a 
determination of nationwide scope and effect for purposes of section 
307(b)(1). Thus, pursuant to section 307(b) any petitions for review of 
this action must be filed in the D.C. Circuit within 60 days from the 
date of publication of this action in the Federal Register.
    In addition, pursuant to CAA sections 307(d)(1)(B), 307(d)(1)(J), 
and 307(d)(1)(V), the Administrator determines that this action is 
subject to the provisions of section 307(d). CAA section 307(d)(1)(B) 
provides that section 307(d) applies to, among other things, ``the 
promulgation or revision of an implementation plan by the Administrator 
under [CAA section 110(c)].'' 42 U.S.C. 7607(d)(1)(B). Under section 
307(d)(1)(J), the provisions of section 307(d) apply to the 
``promulgation or revision of regulations . . . relating to . . . 
protection of visibility.'' 42 U.S.C. 7607(d)(1)(J). Under section 
307(d)(1)(V), the provisions of section 307(d) also apply to ``such 
other actions as the Administrator may determine.'' 42 U.S.C. 
7607(d)(1)(V). The agency has complied with the procedural requirements 
of CAA section 307(d) during the course of this rulemaking.
    CAA section 307(b)(1) also provides that filing a petition for 
reconsideration by the Administrator of this rule does not affect the 
finality of the rule for the purposes of judicial review, does not 
extend the time within which a petition for judicial review may be 
filed, and does not postpone the effectiveness of the rule. Under CAA 
section 307(b)(2), the requirements established by this rule may not be 
challenged separately in any civil or criminal proceedings brought by 
the EPA to enforce these requirements.

List of Subjects in 40 CFR Part 52

    Environmental protection, Administrative practice and procedure, 
Air pollution control, Incorporation by reference, Intergovernmental 
relations, Nitrogen oxides, Ozone, Particulate matter, Regional haze, 
Reporting and recordkeeping requirements, Sulfur dioxide.

    Dated: September 21, 2017.
E. Scott Pruitt,
Administrator.

    For the reasons stated in the preamble, part 52 of chapter I of 
title 40 of the Code of Federal Regulations is amended as follows:

PART 52--APPROVAL AND PROMULGATION OF IMPLEMENTATION PLANS

0
1. The authority citation for part 52 continues to read as follows:

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

Subpart A--General Provisions

0
2. Section 52.38 is amended by:
0
a. Adding a paragraph (a) heading;
0
b. Revising paragraph (a)(2);
0
c. In paragraph (a)(3) introductory text, removing the text ``(a)(2)'' 
and in its place adding the text ``(a)(2)(i) or (ii)'';
0
d. In paragraph (a)(4) introductory text, removing the text ``(a)(2)'' 
and in its place adding the text ``(a)(2)(i)'';
0
e. In paragraphs (a)(5) introductory text and (a)(6), removing the text 
``(a)(2)'' and in its place adding the text ``(a)(2)(i)'', and removing 
the text ``(a)(1) through (4)'' and in its place adding the text 
``(a)(1), (a)(2)(i), and (a)(3) and (4)'';
0
f. In paragraph (a)(8)(iii), removing the text ``(a)(1) through (4)'' 
and in its place adding the text ``(a)(1), (a)(2)(i), and (a)(3) and 
(4)'';
0
g. Adding a paragraph (b) heading; and
0
h. In paragraph (b)(2)(i), after the word ``emissions'' adding the word 
``occurring''.
    The additions and revisions read as follows:


Sec.  52.38  What are the requirements of the Federal Implementation 
Plans (FIPs) for the Cross-State Air Pollution Rule (CSAPR) relating to 
emissions of nitrogen oxides?

    (a) Annual emissions. * * *
    (2)(i) The provisions of subpart AAAAA of part 97 of this chapter 
apply to sources in each of the following States and Indian country 
located within the borders of such States with regard to emissions 
occurring in 2015 and each subsequent year: Alabama, Georgia, Illinois, 
Indiana, Iowa, Kansas, Kentucky, Maryland, Michigan, Minnesota, 
Missouri, Nebraska, New Jersey, New York, North Carolina, Ohio, 
Pennsylvania, South Carolina, Tennessee, Virginia, West Virginia, and 
Wisconsin.
    (ii) The provisions of subpart AAAAA of part 97 of this chapter 
apply to sources in each of the following States and Indian country 
located within the borders of such States with regard to emissions 
occurring in 2015 and 2016 only: Texas.
* * * * *
    (b) Ozone season emissions. * * *

0
3. Section 52.39 is amended by:
0
a. In paragraph (b), before the colon, adding the text ``with regard to 
emissions occurring in 2015 and each subsequent year'';
0
b. Revising paragraph (c);
0
c. In paragraph (g) introductory text, removing the text ``(c)'' and in 
its place adding the text ``(c)(1) or (2)'';
0
d. In paragraph (h) introductory text, removing the text ``(c)'' and in 
its place adding the text ``(c)(1)'';
0
e. In paragraphs (i) introductory text and (j), removing the text 
``(c)'' two times and in its place adding the text ``(c)(1)''; and
0
f. In paragraph (m)(3), removing the text ``(c)'' and in its place 
adding the text ``(c)(1)''.
    The revision reads as follows:


Sec.  52.39  What are the requirements of the Federal Implementation 
Plans (FIPs) for the Cross-State Air Pollution Rule (CSAPR) relating to 
emissions of sulfur dioxide?

* * * * *
    (c)(1) The provisions of subpart DDDDD of part 97 of this chapter 
apply to sources in each of the following States and Indian country 
located within the borders of such States with regard to emissions 
occurring in 2015 and each subsequent year: Alabama, Georgia, Kansas, 
Minnesota, Nebraska, and South Carolina.
    (2) The provisions of subpart DDDDD of part 97 of this chapter 
apply to sources in each of the following States and Indian country 
located within the borders of such States with regard to emissions 
occurring in 2015 and 2016 only: Texas.
* * * * *

Subpart PP--South Carolina


Sec.  52.2141  [Amended]

0
4. Section 52.2141, paragraph (b) is amended by removing the text 
``Group 1'' two times and in its place adding the text ``Group 2'', and 
removing the text ``CCCCC'' two times and in its place adding the text 
``DDDDD''.

Subpart SS--Texas

0
5. Section 52.2283 is amended by revising paragraph (c)(1) and removing 
and reserving paragraph (c)(2).
    The revision reads as follows:


Sec.  52.2283  Interstate pollutant transport provisions; What are the 
FIP requirements for decreases in emissions of nitrogen oxides?

* * * * *
    (c)(1) The owner and operator of each source and each unit located 
in the State of Texas and Indian country within the borders of the 
State and for which requirements are set forth under the CSAPR 
NOX Annual Trading Program in subpart AAAAA of part 97 of 
this

[[Page 45497]]

chapter must comply with such requirements with regard to emissions 
occurring in 2015 and 2016.
* * * * *

0
6. Section 52.2284 is amended by revising paragraph (c)(1) and removing 
and reserving paragraph (c)(2).
    The revision reads as follows:


Sec.  52.2284  Interstate pollutant transport provisions; What are the 
FIP requirements for decreases in emissions of sulfur dioxide?

* * * * *
    (c)(1) The owner and operator of each source and each unit located 
in the State of Texas and Indian country within the borders of the 
State and for which requirements are set forth under the CSAPR 
SO2 Group 2 Trading Program in subpart DDDDD of part 97 of 
this chapter must comply with such requirements with regard to 
emissions occurring in 2015 and 2016.
* * * * *
[FR Doc. 2017-20832 Filed 9-28-17; 8:45 am]
 BILLING CODE 6560-50-P



                                                                       Federal Register / Vol. 82, No. 188 / Friday, September 29, 2017 / Rules and Regulations                                           45481

                                                                                                   EPA-APPROVED IOWA NONREGULATORY SIP PROVISIONS
                                                                                            Applicable              State
                                                    Name of non-regulatory                geographic or           submittal          EPA approval date                                 Explanation
                                                       SIP provision                      nonattainment             date
                                                                                              area


                                                            *                            *                       *                      *                    *                   *                     *
                                                  (49) Sections 110(a)(1)               Statewide ...........         12/15/15    09/29/17 and [Insert Fed- This action addresses the following CAA elements:
                                                    and (2) Infrastructure                                                          eral Register citation].   110(a)(2)(A), (B), (C), (D)(i)(II) prong 3, (D)(ii),
                                                    Requirements 2012 an-                                                                                      (E), (F), (G), (H), (J), (K), (L), and (M).
                                                    nual PM2.5 NAAQS.                                                                                          110(a)(2)(I) is not applicable. [EPA–R07–OAR–
                                                                                                                                                               2017–0517; FRL–XXXX–Region 7.]



                                                  [FR Doc. 2017–20829 Filed 9–28–17; 8:45 am]                   withdrawal of the FIP requirements,                  No. EPA–HQ–OAR–2016–0598. All
                                                  BILLING CODE 6560–50–P                                        sources in Texas do not contribute                   documents in the docket are listed and
                                                                                                                significantly to nonattainment in, or                publicly available at http://
                                                                                                                interfere with maintenance by, any                   www.regulations.gov.
                                                  ENVIRONMENTAL PROTECTION                                      other state with regard to the 1997
                                                  AGENCY                                                        national ambient air quality standard                FOR FURTHER INFORMATION CONTACT:
                                                                                                                (NAAQS) for fine particulate matter                  Questions about the withdrawal of
                                                  40 CFR Part 52                                                (PM2.5). Accordingly, we are also                    CSAPR FIP requirements for Texas
                                                  [EPA–HQ–OAR–2016–0598; FRL–9968–46–                           determining that the EPA has no                      EGUs should be directed to David
                                                  OAR]                                                          obligation to issue new FIP                          Lifland, Clean Air Markets Division,
                                                  RIN 2060–AT16
                                                                                                                requirements for Texas sources to                    Office of Atmospheric Programs, U.S.
                                                                                                                address transported PM2.5 pollution                  Environmental Protection Agency, MC
                                                  Interstate Transport of Fine Particulate                      under Clean Air Act (CAA) section                    6204M, 1200 Pennsylvania Avenue
                                                  Matter: Revision of Federal                                   110(a)(2)(D)(i)(I) with regard to that               NW., Washington, DC 20460; telephone
                                                  Implementation Plan Requirements for                          NAAQS. Finally, the EPA is also                      number: (202) 343–9151; email address:
                                                  Texas                                                         affirming the continued validity of the              lifland.david@epa.gov. Questions about
                                                                                                                Agency’s 2012 determination that                     the sensitivity analysis regarding
                                                  AGENCY:  Environmental Protection                             participation in CSAPR meets the
                                                  Agency (EPA).                                                                                                      CSAPR participation as a BART
                                                                                                                Regional Haze Rule’s criteria for an                 alternative should be directed to
                                                  ACTION: Final rule.                                           alternative to the application of source-            Melinda Beaver, Office of Air Quality
                                                  SUMMARY:   The Environmental Protection                       specific best available retrofit                     Planning and Standards, U.S.
                                                  Agency (EPA) is finalizing withdrawal                         technology (BART). The EPA has                       Environmental Protection Agency, 109
                                                  of the federal implementation plan (FIP)                      determined that changes to CSAPR’s
                                                                                                                                                                     T.W. Alexander Drive, Mail Code C539–
                                                  provisions that require affected                              geographic scope resulting from the
                                                                                                                                                                     04, Research Triangle Park, NC 27709;
                                                  electricity generating units (EGUs) in                        actions EPA has taken or expects to take
                                                                                                                                                                     telephone number: (919) 541–1062;
                                                  Texas to participate in Phase 2 of the                        in response to the D.C. Circuit’s remand
                                                                                                                do not affect the continued validity of              email address: beaver.melinda@epa.gov.
                                                  Cross-State Air Pollution Rule (CSAPR)
                                                  trading programs for annual emissions                         participation in CSAPR as a BART                     SUPPLEMENTARY INFORMATION:      Regulated
                                                  of sulfur dioxide (SO2) and nitrogen                          alternative, because the changes in                  Entities. Entities regulated under CSAPR
                                                  oxides (NOX). Withdrawal of the FIP                           geographic scope would not have                      are fossil fuel-fired boilers and
                                                  requirements is intended to address a                         adversely affected the results of the air            stationary combustion turbines that
                                                  decision of the U.S. Court of Appeals for                     quality modeling analysis upon which                 serve generators producing electricity
                                                  the District of Columbia Circuit (D.C.                        the EPA based the 2012 determination.                for sale, including combined cycle units
                                                  Circuit) remanding the CSAPR Phase 2                          DATES: This final rule is effective on               and units operating as part of systems
                                                  SO2 budget for Texas to the EPA for                           September 29, 2017.                                  that cogenerate electricity and other
                                                  reconsideration. With this action, the                        ADDRESSES: The EPA has established a                 useful energy output. Regulated
                                                  EPA is also determining that, following                       docket for this action under Docket ID               categories and entities include:

                                                             Category                   NAICS * code                                        Examples of potentially regulated industries

                                                  Industry ..........................          221112      Fossil fuel-fired electric power generation.
                                                     * North American Industry Classification System.


                                                    This table is not intended to be                            CSAPR to a particular entity, consult the               B. CSAPR Participation as a BART
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                                                  exhaustive, but rather provides a guide                       person listed in the FOR FURTHER                          Alternative
                                                  for readers regarding entities likely to be                   INFORMATION CONTACT section above.                   III. Withdrawal of CSAPR FIP Requirements
                                                  regulated. To determine whether your                                                                                    Related to Texas’ Transport Obligations
                                                  facility is affected by this action, you                      Table of Contents                                         With Regard to the 1997 Annual PM2.5
                                                  should carefully examine the                                  I. Overview                                               NAAQS
                                                  applicability provisions in 40 CFR                            II. Background                                          A. Summary
                                                                                                                                                                        B. Adequacy of Rationale for Finding No
                                                  97.404 and 97.704. If you have                                   A. History and Summary of CSAPR
                                                                                                                                                                          Remaining Transport Obligation
                                                  questions regarding the applicability of


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                                                  45482            Federal Register / Vol. 82, No. 188 / Friday, September 29, 2017 / Rules and Regulations

                                                    C. Responsiveness to the D.C. Circuit’s               collective annual emissions of SO2 and                  consideration. The Agency’s responses
                                                       Remand Instructions                                NOX.                                                    to the principal comments are provided
                                                    D. Consistency of Responses To Remand                    In 2012, the EPA promulgated an                      below. The remaining comments are
                                                       Across States                                      amendment to the Regional Haze Rule                     addressed in the Response to Comments
                                                    E. Consistency of Consideration of D.C.
                                                       Circuit’s Holding Across States
                                                                                                          allowing a state whose EGUs participate                 document available in the docket for
                                                    F. Potential Use of Texas FIP Budgets To              in one of the CSAPR trading programs                    this action.
                                                       Address a Different PM2.5 NAAQS                    for a given pollutant to rely on its                       In this final action, as proposed, the
                                                  IV. Sensitivity Analysis Regarding CSAPR                sources’ participation in CSAPR as an                   EPA is withdrawing the FIP provisions
                                                       Participation as a BART Alternative                alternative to source-specific BART                     requiring Texas EGUs to participate in
                                                    A. Summary                                            requirements—the so-called CSAPR-                       the CSAPR SO2 Group 2 Trading
                                                    B. Continued CSAPR Participation by                   better-than-BART rule, codified at 40                   Program and the CSAPR NOX Annual
                                                       Georgia and South Carolina                         CFR 51.308(e)(4).2 This rule relied on a                Trading Program during Phase 2 of these
                                                    C. Appropriateness of Continued Reliance
                                                       on Original CSAPR-Better-than-BART
                                                                                                          regional analytic demonstration that                    programs, which began with 2017
                                                       Analysis                                           included an air quality modeling                        emissions.6 Removal of Texas EGUs
                                                    D. Possible Changes in the Geographic                 analysis comparing the projected                        from Phase 2 of these CSAPR trading
                                                       Distribution of Emissions                          visibility impacts of CSAPR                             programs renders it necessary to
                                                    E. Validity of 2012 Analytic Demonstration            implementation and BART                                 evaluate whether EPA should use other
                                                       Prior to CSAPR Changes                             implementation. To project emissions                    means to address any remaining
                                                  V. Description of Amendments to Regulatory              under CSAPR, the EPA assumed that the                   transport obligation for Texas under
                                                       Text                                               geographic scope and state emissions                    CAA section 110(a)(2)(D)(i)(I) with
                                                  VI. Statutory and Executive Order Reviews
                                                    A. Executive Order 12866: Regulatory
                                                                                                          budgets for CSAPR would be                              regard to the 1997 annual PM2.5
                                                       Planning and Review, and Executive                 implemented as finalized and amended                    NAAQS. However, the EPA is finalizing
                                                       Order 13563: Improving Regulation and              in 2011 and 2012.3                                      its proposed determination that Texas
                                                       Regulatory Review                                     In July 2015, the D.C. Circuit issued                does not have any such remaining 1997
                                                    B. Executive Order 13771: Reducing                    a decision on a range of challenges to                  annual PM2.5 NAAQS transport
                                                       Regulations and Controlling Regulatory             CSAPR in EME Homer City Generation,                     obligation as of the beginning of Phase
                                                       Costs                                              L.P. v. EPA (EME Homer City II),                        2 of the CSAPR trading programs for
                                                    C. Paperwork Reduction Act                            denying most claims but remanding                       SO2 and annual NOX. Accordingly, the
                                                    D. Regulatory Flexibility Act                         several CSAPR emissions budgets to the                  EPA is also determining that the Agency
                                                    E. Unfunded Mandates Reform Act
                                                    F. Executive Order 13132: Federalism
                                                                                                          EPA for reconsideration, including the                  has no obligation to issue new FIP
                                                    G. Executive Order 13175: Consultation                Phase 2 SO2 budget for Texas.4 Because                  requirements for Texas sources to
                                                       and Coordination With Indian Tribal                the remand created the potential for                    address transported PM2.5 pollution
                                                       Governments                                        changes in the geographic scope and                     under CAA section 110(a)(2)(D)(i)(I)
                                                    H. Executive Order 13045: Protection of               stringency of CSAPR as evaluated for                    with regard to this NAAQS.
                                                       Children from Environmental Health and             purposes of the 2012 comparison to                         Also in this action, the EPA is
                                                       Safety Risks                                       BART implementation, the EPA                            concluding, based on consideration of
                                                    I. Executive Order 13211: Actions That                recognizes that how the Agency                          the sensitivity analysis included in the
                                                       Significantly Affect Energy Supply,                addresses the remand could raise                        proposal and additional analysis
                                                       Distribution, or Use
                                                    J. National Technology Transfer
                                                                                                          questions as to whether states and the                  included in this final action, that the
                                                       Advancement Act                                    EPA should continue to rely on the                      2012 analytic demonstration supporting
                                                    K. Executive Order 12898: Federal Actions             CSAPR-better-than-BART rule.                            the conclusion that CSAPR participation
                                                       To Address Environmental Justice in                   The EPA issued a proposal to address                 qualifies as a BART alternative is not
                                                       Minority Populations and Low-Income                the remand of the Texas Phase 2 SO2                     adversely affected by the actions being
                                                       Populations                                        budget and to resolve any questions                     taken to respond to the D.C. Circuit’s
                                                    L. Congressional Review Act                           about continued reliance on the CSAPR-                  remand of CSAPR Phase 2 budgets.7 As
                                                    M. Judicial Review and Determinations                 better-than-BART rule on November 3,                    a result, no revisions are needed to the
                                                       Under CAA Section 307(b)(1) and (d)                2016, and solicited comment on the                      CSAPR-better-than-BART rule.
                                                  I. Overview                                             proposal.5 Four commenters provided                        At the same time, however, because
                                                                                                          substantive comments, and this final                    Texas EGUs will no longer participate in
                                                     The EPA promulgated CSAPR in 2011                    rule takes those comments into                          a CSAPR SO2 trading program, Texas
                                                  in order to address the obligations of
                                                  states—and of the EPA when states have                     2 Regional Haze: Revisions to Provisions               6 With regard to each of the other remanded
                                                  not met their obligations—under CAA                     Governing Alternatives to Source-Specific Best          budgets, the EPA either has already withdrawn or
                                                  section 110(a)(2)(D)(i)(I) to prohibit air              Available Retrofit Technology (BART)                    expects to withdraw the FIP provisions requiring
                                                  pollution contributing significantly to                 Determinations, Limited SIP Disapprovals, and           the EGUs in the affected states to participate in the
                                                                                                          Federal Implementation Plans, 77 FR 33642 (June         corresponding CSAPR federal trading programs in
                                                  nonattainment in, or interfering with                   7, 2012).                                               Phase 2 through other actions, as discussed in
                                                  maintenance by, any other state with                       3 CSAPR was amended three times in 2011 and          section III below.
                                                  regard to several NAAQS, including the                  2012 to add five states to the seasonal NOX program       7 In addition to this action, the full set of actions

                                                  1997 annual PM2.5 NAAQS.1 To address                    and to increase certain state budgets. 76 FR 80760      being taken to respond to the remand includes the
                                                                                                          (December 27, 2011); 77 FR 10324 (February 21,          2016 CSAPR Update withdrawing the remanded
                                                  Texas’ transport obligation under CAA                   2012); 77 FR 34830 (June 12, 2012). The CSAPR-          seasonal NOX budgets for eleven states and
                                                  section 110(a)(2)(D)(i)(I) with regard to               better-than-BART final rule reflected consideration     establishing new seasonal NOX budgets to address
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                                                  this NAAQS, CSAPR established FIP                       of these changes to CSAPR.                              a more recent ozone NAAQS for eight of those
                                                  requirements for affected EGUs in                          4 EME Homer City Generation, L.P. v. EPA (EME
                                                                                                                                                                  states, the action approving Alabama’s SIP revision
                                                  Texas, including statewide emissions                    Homer City II), 795 F.3d 118, 138 (D.C. Cir. 2015).     establishing state CSAPR trading programs for SO2
                                                                                                          The court also remanded the Phase 2 SO2 budgets         and annual NOX to replace the corresponding
                                                  budgets that apply to the EGUs’                         for three other states and the Phase 2 seasonal NOX     federal CSAPR trading programs, and the expected
                                                                                                          budgets for eleven states, including Texas. Id.         actions to approve proposed SIP revisions for
                                                     1 Federal Implementation Plans; Interstate              5 Interstate Transport of Fine Particulate Matter:   Georgia and South Carolina comparable to
                                                  Transport of Fine Particulate Matter and Ozone and      Revision of Federal Implementation Plan                 Alabama’s SIP revision (see notes 14, 53, and 57
                                                  Correction of SIP Approvals, 76 FR 48208 (August        Requirements for Texas, Proposed Rule, 81 FR            below). These additional actions are described in
                                                  8, 2011).                                               78954 (November 10, 2016).                              more detail in sections II.A and III.D below.



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                                                                   Federal Register / Vol. 82, No. 188 / Friday, September 29, 2017 / Rules and Regulations                                              45483

                                                  will no longer be eligible to rely on                   obligations—under CAA section                         determined that none of those eleven
                                                  CSAPR participation as an alternative to                110(a)(2)(D)(i)(I), often referred to as the          states has a remaining transport
                                                  the application of source-specific SO2                  ‘‘good neighbor’’ provision, to prohibit              obligation under CAA section
                                                  BART for its BART-eligible EGUs under                   transported air pollution contributing                110(a)(2)(D)(i)(I) with regard to the 1997
                                                  40 CFR 51.308(e)(4). That obligation and                significantly to nonattainment in, or                 8-hour ozone NAAQS, but for eight of
                                                  any other remaining regional haze                       interfering with maintenance by, any                  those states, including Texas, the
                                                  obligations for Texas are not addressed                 other state with regard to the 1997                   CSAPR Update rule also established
                                                  in this action and will need to be                      annual PM2.5 NAAQS, the 2006 24-hour                  new budgets to address transport
                                                  addressed through other actions as                      PM2.5 NAAQS, and the 1997 8-hour                      obligations with regard to the more
                                                  appropriate.8                                           ozone NAAQS.10 To reduce transported                  stringent 2008 8-hour ozone NAAQS.15
                                                     This final rule is effective                         PM2.5 pollution, CSAPR sets limits on                 EGUs in the three states with remanded
                                                  immediately upon publication in the                     annual emissions of NOX and SO2 as                    Phase 2 seasonal NOX budgets for which
                                                  Federal Register. As discussed in                       precursors to PM2.5. To reduce                        the EPA did not establish new
                                                  section VI.L below, the EPA is issuing                  transported ozone pollution during the                budgets—Florida, North Carolina, and
                                                  this rule under CAA section 307(d).                     May-September ozone season, CSAPR                     South Carolina—are no longer required
                                                  While Administrative Procedure Act                      sets limits on seasonal emissions of NOX              to participate in a CSAPR trading
                                                  (APA) section 553(d)9 generally                         as a precursor to ozone. The CSAPR                    program for seasonal NOX emissions to
                                                  provides that rules may not take effect                 requirements were initially established               address ozone transport obligations after
                                                  earlier than 30 days after they are                     in FIPs, but states can voluntarily                   2016. However, because EGUs in North
                                                  published in the Federal Register, CAA                  replace the CSAPR FIPs with CSAPR                     Carolina and South Carolina16 are
                                                  section 307(d)(1) clarifies that ‘‘[t]he                state implementation plans (SIPs) that                expected to continue to participate in a
                                                  provisions of [APA] section 553 . . .                   include equally stringent budgets.11                  CSAPR trading program for annual NOX
                                                  shall not, except as expressly provided                 Upon approval of such a CSAPR SIP,                    emissions in order to address PM2.5-
                                                  in this section, apply to actions to                    the corresponding CSAPR FIP is
                                                                                                                                                                related transport obligations, Florida is
                                                  which this subsection applies.’’ Thus,                  automatically withdrawn.12
                                                                                                             As explained in the proposal, a                    expected to be the only state originally
                                                  APA section 553(d) does not apply to                                                                          covered by CSAPR for NOX emissions
                                                  this rule. Nevertheless, in making this                 number of petitioners challenged
                                                                                                          CSAPR, and in 2015 the D.C. Circuit                   for which all such coverage is ending as
                                                  rule effective immediately upon                                                                               a result of the EPA’s set of actions to
                                                  publication, the EPA has considered the                 issued a decision remanding the Phase
                                                                                                          2 SO2 emissions budgets for Alabama,                  address the remand.17
                                                  purposes underlying APA section
                                                  553(d). The primary purpose of the                      Georgia, South Carolina, and Texas and                   Prior to this action, Texas EGUs have
                                                  prescribed 30-day waiting period is to                  the Phase 2 seasonal NOX budgets for                  been subject to CSAPR FIP provisions
                                                  give affected parties a reasonable time to              eleven states to the EPA for                          requiring participation in the CSAPR
                                                  adjust their behavior and prepare before                reconsideration.13 In response to the                 SO2 Group 2 Trading Program and the
                                                  a final rule takes effect. This rule does               remand of the Phase 2 SO2 emissions                   CSAPR NOX Annual Trading Program.
                                                  not impose any new regulatory                           budgets, the EPA has engaged the                      With this action, the EPA is
                                                  requirements and therefore does not                     affected states to determine appropriate              withdrawing the FIP provisions
                                                  necessitate time for affected sources to                next steps to address the decision with               requiring Texas EGUs to participate in
                                                  adjust their behavior or otherwise                      regard to each state. As discussed in the             these CSAPR federal trading programs.
                                                                                                          proposal and also in section III below,               (Although the court’s decision
                                                  prepare for implementation. Further,
                                                                                                          the EPA expects that EGUs in Alabama,                 specifically remanded only Texas’ Phase
                                                  APA section 553(d) expressly allows an
                                                                                                          Georgia, and South Carolina will                      2 SO2 budget, the court’s rationale for
                                                  effective date less than 30 days after
                                                                                                          continue to participate in CSAPR                      remanding that budget also implicates
                                                  publication for a rule that ‘‘grants or
                                                                                                          trading programs for SO2 and annual                   Texas’ Phase 2 annual NOX budget
                                                  recognizes an exemption or relieves a
                                                                                                          NOX pursuant to approved SIP revisions                because the SO2 and annual NOX
                                                  restriction.’’ This rule relieves Texas
                                                                                                          (with equally stringent emissions                     budgets were developed through an
                                                  EGUs of certain FIP requirements that
                                                                                                          budgets), making Texas the only state                 integrated analysis and were
                                                  would otherwise apply. Consequently,
                                                                                                          whose EGUs will no longer participate                 promulgated to meet a common PM2.5
                                                  making this rule effective immediately
                                                                                                          in these programs to reduce transported               transport obligation under CAA section
                                                  upon publication is consistent with the                 PM2.5 pollution as a result of actions
                                                  purposes of APA section 553(d).                                                                               110(a)(2)(D)(i)(I).) This action has no
                                                                                                          taken to address the remand.                          effect on the separate CSAPR
                                                  II. Background                                             Also as explained in the proposal, in              requirements applicable to Texas EGUs
                                                                                                          the CSAPR Update rule issued in 2016,                 relating to seasonal NOX emissions,
                                                  A. History and Summary of CSAPR                         the EPA responded to the remand of                    which, as discussed in the preceding
                                                    The EPA initially promulgated                         eleven states’ original Phase 2 seasonal              paragraph, were promulgated in the
                                                  CSAPR in 2011 to address the                            NOX budgets (which had been
                                                  obligations of states—and of the EPA                    established to address transport                        15 Id. at 74524.
                                                  when states have not met their                          obligations with regard to the 1997 8-                  16 North   Carolina EGUs remain subject to FIP
                                                                                                          hour ozone NAAQS) by withdrawing                      provisions requiring participation in a CSAPR
                                                     8 The EPA notes that under 40 CFR 51.308(e)(4),      the FIP provisions requiring EGUs to                  trading program for annual NOX emissions. The
                                                  CSAPR implementation is available as a NOX BART         comply with those budgets for                         EPA’s expectation that South Carolina EGUs will
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                                                  alternative for a state whose EGUs are subject to                                                             continue to participate in a CSAPR program for
                                                  CSAPR requirements for either annual NOX or
                                                                                                          emissions after 2016.14 The EPA                       annual NOX emissions is based on South Carolina’s
                                                  seasonal NOX emissions. See 77 FR at 33652. Texas                                                             submission of a SIP revision that includes such
                                                                                                            10 See generally 76 FR 48208.
                                                  EGUs continue to participate in a CSAPR trading                                                               requirements, as discussed in sections III and V
                                                                                                            11 E.g.,40 CFR 52.39(i).
                                                  program for seasonal NOX. In a separate proposed                                                              below.
                                                  action, the EPA has proposed to address NOX BART          12 E.g.,40 CFR 52.39(j).                               17 For discussion of the EPA’s response to the
                                                  for Texas EGUs through reliance on participation in       13 EME Homer City II, 795 F.3d at 138.              remand of the Florida seasonal NOX budget, and the
                                                  CSAPR as a NOX BART alternative. 82 FR 917                14 Cross-State Air Pollution Rule Update for the    assessment of the implications of that response for
                                                  (January 4, 2017).                                      2008 Ozone NAAQS (CSAPR Update), 81 FR 74504,         the CSAPR-better-than-BART analytical
                                                     9 5 U.S.C. 553(d).                                   74576 (October 26, 2016).                             demonstration, see 81 FR at 78962.



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                                                  45484            Federal Register / Vol. 82, No. 188 / Friday, September 29, 2017 / Rules and Regulations

                                                  CSAPR Update rule and are not subject                   and included Florida EGUs as subject to                programs, which began in 2017. In EME
                                                  to the D.C. Circuit’s remand.                           CSAPR for seasonal NOX. The EPA                        Homer City II, the court remanded the
                                                                                                          recognizes that the treatment of these                 CSAPR Phase 2 SO2 budget for Texas to
                                                  B. CSAPR Participation as a BART
                                                                                                          EGUs in the analysis would have been                   the EPA for reconsideration on the
                                                  Alternative
                                                                                                          different if the Florida FIP withdrawal                grounds that the budget may be more
                                                     The proposal provides a detailed                     finalized in the CSAPR Update rule and                 stringent than necessary to address the
                                                  explanation of the Regional Haze Rule                   the Texas FIP withdrawal finalized in                  state’s obligation under CAA section
                                                  requirements for best available retrofit                this action had been known at the time                 110(a)(2)(D)(i)(I) to reduce transported
                                                  technology (BART) and the criteria for                  of the demonstration. In order to                      pollution with respect to the 1997
                                                  demonstrating that an alternative                       address any potential concern about                    annual PM2.5 NAAQS.23 Upon review of
                                                  measure achieves greater reasonable                     continuing to rely on CSAPR                            options for responding to the remand,
                                                  progress than source-specific BART.18                   participation as a BART alternative for                the EPA has determined, for the reasons
                                                     In 2012, the EPA amended the                         EGUs in the remaining CSAPR states, in                 discussed in this section, that
                                                  Regional Haze Rule to provide that                      the proposal for this action the EPA                   withdrawal of the FIP provisions
                                                  participation by a state’s EGUs in a                    provided a sensitivity analysis explicitly             identified above, rather than issuance of
                                                  CSAPR trading program for a given                       addressing the potential effect on that                revised FIP provisions for Texas with a
                                                  pollutant—either a CSAPR federal                        demonstration of the removal of Texas                  higher (i.e., less stringent) Phase 2 SO2
                                                  trading program implemented through a                   and Florida EGUs from the relevant                     budget as advocated by some
                                                  CSAPR FIP or a CSAPR state trading                      CSAPR trading programs in response to                  commenters, is the appropriate
                                                  program implemented through an                          the D.C. Circuit’s remand. As discussed                response. Withdrawal of the FIP
                                                  approved CSAPR SIP revision—                            in section IV, the sensitivity analysis                provisions related to the CSAPR SO2
                                                  qualifies as a BART alternative for those               indicates clearly that the demonstration               trading program encompasses
                                                  EGUs for that pollutant.19 In                           remains valid despite these changes in                 withdrawal of the requirement for Texas
                                                  promulgating this CSAPR-better-than-                    CSAPR’s geographic scope, supporting                   EGUs to comply with the remanded
                                                  BART rule, the EPA relied on an                         the continued validity of EPA’s 2012                   Phase 2 SO2 budget, thereby addressing
                                                  analytic demonstration of the                           conclusion that CSAPR participation                    the specific rule provision remanded by
                                                  improvement in visibility from CSAPR                    meets the Regional Haze Rule’s criteria                the court. The EPA is withdrawing the
                                                  implementation relative to BART                         for a BART alternative.22 Consequently,                FIP provisions related to annual NOX (in
                                                  implementation based on an air quality                  in this action the EPA is affirming the                addition to the requirements related to
                                                  modeling study.20 Since the EPA                         current Regional Haze Rule provision at                SO2) because the CSAPR FIP
                                                  promulgated this amendment,                             40 CFR 51.308(e)(4) authorizing the use                requirements for SO2 and annual NOX
                                                  numerous states covered by CSAPR                        of CSAPR participation as a BART                       were determined through an integrated
                                                  have come to rely on the provision                      alternative for BART-eligible EGUs for a               analysis and were promulgated in
                                                  through either SIPs or FIPs.21                          given pollutant in states whose EGUs                   combination to remedy covered states’
                                                  Additionally, many states have                          continue to participate in a CSAPR                     PM2.5 transport obligations; the court’s
                                                  submitted or are planning to submit                     trading program for that pollutant.                    finding that CSAPR’s Phase 2
                                                  SIPs relying on the CSAPR-better-than-                                                                         requirements may be more stringent
                                                  BART rule for BART or visibility                        III. Withdrawal of CSAPR FIP                           than necessary to address Texas’ PM2.5
                                                  transport purposes, or to replace                       Requirements Related to Texas’                         transport obligation therefore implicates
                                                  regional haze FIPs with SIPs.                           Transport Obligations With Regard to                   the state’s Phase 2 budgets for both SO2
                                                     As explained in the proposal, the                    the 1997 Annual PM2.5 NAAQS                            and annual NOX.
                                                  2012 analytic demonstration that                        A. Summary                                                Withdrawal of the previous CSAPR
                                                  CSAPR provides for greater reasonable                                                                          FIP requirements revives the need to
                                                  progress than BART included Texas                          In this action, as proposed, the EPA                consider Texas’ transport obligation
                                                  EGUs as subject to CSAPR for SO2 and                    is responding to the remand of the                     under CAA section 110(a)(2)(D)(i)(I)
                                                  annual NOX (as well as seasonal NOX)                    CSAPR Phase 2 SO2 budget for Texas by                  with regard to the 1997 annual PM2.5
                                                                                                          withdrawing the FIP provisions                         NAAQS and to address any remaining
                                                    18 81  FR at 78957.                                   requiring Texas EGUs to participate in                 obligation through other means.
                                                    19 40  CFR 51.308(e)(4); see also generally 77 FR     the CSAPR SO2 Group 2 Trading                          However, as proposed, the Agency is
                                                  33642. Legal challenges to the CSAPR-better-than-       Program and the CSAPR NOX Annual
                                                  BART rule from conservation groups and other                                                                   further determining that Texas has no
                                                  petitioners are pending. Utility Air Regulatory
                                                                                                          Trading Program with regard to                         remaining transport obligation under
                                                  Group v. EPA, No. 12–1342 (D.C. Cir. filed August       emissions during Phase 2 of those                      this CAA provision with regard to this
                                                  6, 2012).
                                                     20 See Technical Support Document for                  22 With respect to each of the remanded budgets,
                                                                                                                                                                 NAAQS following withdrawal of the
                                                  Demonstration of the Transport Rule as a BART           the EPA has responded or expects to respond to the
                                                                                                                                                                 previous FIP requirements, and
                                                  Alternative, Docket ID No. EPA–HQ–OAR–2011–             remand by withdrawing the FIP provisions               consequently is also determining that
                                                  0729–0014 (December 2011) (2011 CSAPR/BART              requiring compliance with the remanded budget.         the EPA has no obligation to issue new
                                                  Technical Support Document), and memo entitled          Thus, all changes to CSAPR arising directly from       FIP requirements as to Texas’s transport
                                                  ‘‘Sensitivity Analysis Accounting for Increases in      the Agency’s response to the remand are changes
                                                  Texas and Georgia Transport Rule State Emissions        in CSAPR’s geographic scope rather than changes
                                                                                                                                                                 obligation under CAA section
                                                  Budgets,’’ Docket ID No. EPA–HQ–OAR–2011–               in the stringency of state budgets. Although the EPA   110(a)(2)(D)(i)(I) with regard to the 1997
                                                  0729–0323 (May 29, 2012), both available in the         has also promulgated new CSAPR seasonal NOX            annual PM2.5 NAAQS.
                                                  docket for this action.                                 budgets for 22 states (including eight states with        In the CSAPR final rule, the EPA
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                                                     21 The EPA has promulgated FIPs relying on           remanded seasonal NOX budgets) in order to             determined that 23 states, including
                                                  CSAPR participation for BART purposes for               address a more stringent NAAQS, see generally 81
                                                  Georgia, Indiana, Iowa, Kentucky, Michigan,             FR 74504, for purposes of the sensitivity analysis
                                                                                                                                                                 Texas, had transport obligations with
                                                  Missouri, Ohio, Pennsylvania, South Carolina,           the EPA has conservatively not considered the          regard to the 1997 annual PM2.5
                                                  Tennessee, Virginia, and West Virginia, 77 FR at        generally increased stringency of the new seasonal
                                                  33654, and Nebraska, 77 FR 40150, 40151 (July 6,        NOX budgets, but the EPA did consider the changes        23 795 F.3d at 128–29. A more detailed discussion
                                                  2012). The EPA has approved SIPs relying on             in CSAPR’s geographic scope—that is, the fact that     of how the EPA established the CSAPR Phase 2 SO2
                                                  CSAPR participation for BART purposes for               the remaining three states with remanded seasonal      budget for Texas and why the court found the
                                                  Minnesota, 77 FR 34801, 34806 (June 12, 2012), and      NOX budgets will no longer participate in CSAPR        budget invalid is included in the proposal for this
                                                  Wisconsin, 77 FR 46952, 46959 (August 7, 2012).         for seasonal NOX.                                      action. 81 FR at 78958.



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                                                                   Federal Register / Vol. 82, No. 188 / Friday, September 29, 2017 / Rules and Regulations                                         45485

                                                  NAAQS, the 2006 24-hour PM2.5                           purposes, and that in instances of                       Finally, the value that the EPA used to
                                                  NAAQS, or both, and established SO2                     receptors where the 2014 base case                       determine whether a particular PM2.5
                                                  and annual NOX emissions budgets for                    projections did not show air quality                     receptor should be identified as having
                                                  each of the states.24 The budgets were                  problems, the EPA lacked authority to                    air quality problems that may trigger
                                                  implemented through FIP provisions                      require any emission reductions in                       transport obligations with regard to the
                                                  requiring the affected EGUs in each                     Phase 2 of the CSAPR trading programs                    1997 annual PM2.5 NAAQS is 15.05 mg/
                                                  covered state to participate in CSAPR                   based on linkages to those receptors                     m3, which is higher than the Madison
                                                  allowance trading programs. In the case                 only occurring in Phase 1 of the                         County maximum design value in the
                                                  of Texas, the PM2.5-related FIP                         programs. On these grounds, the court                    2014 base case.32 Thus, the reevaluation
                                                  requirements were imposed based solely                  found that EPA lacked authority to                       of the final CSAPR record in light of the
                                                  on the state’s transport obligations with               establish Phase 2 seasonal NOX                           D.C. Circuit’s holding indicates that the
                                                  regard to the 1997 annual PM2.5                         emission limitations for EGUs in ten                     record does not support a finding of a
                                                  NAAQS.25                                                states linked solely to ozone receptors                  transport obligation for Texas under
                                                     Following issuance of the D.C.                       whose 2014 air quality projections did                   CAA section 110(a)(2)(D)(i)(I) with
                                                  Circuit’s decision in EME Homer City II                 not show air quality problems.28                         regard to this NAAQS as of the
                                                  remanding the CSAPR Phase 2 SO2                            While not discussed in the court’s                    beginning of Phase 2 of the CSAPR
                                                  budget for Texas, the EPA reevaluated                   decision, the projections of 2014 air                    trading programs for SO2 and annual
                                                  its earlier conclusions regarding Texas’                quality for a PM2.5 receptor in Madison                  NOX, and the Agency accordingly finds
                                                  PM2.5 transport obligations by                          County, Illinois (the only PM2.5 receptor                that the state’s obligation is resolved
                                                  reexamining the data in the final CSAPR                 with projected air quality problems to                   without a need for further emission
                                                  record in light of the D.C. Circuit’s                   which Texas was linked) in the final                     reductions, including the emission
                                                  holdings in the decision, including the                 CSAPR record are analogous to the 2014                   reductions from CSAPR. The finding
                                                  holdings regarding the CSAPR Phase 2                    air quality projections for the ozone                    that Texas’s transport obligation with
                                                  seasonal NOX budgets for several states,                receptors described above, in that the air               regard to this NAAQS is resolved as of
                                                  as explained in the proposal.26 The final               quality problems at the Madison County                   the start of Phase 2 of the CSAPR
                                                  CSAPR record contained ‘‘base case’’                    receptor were projected to be resolved                   trading programs without the need for
                                                  modeling projections of air quality at                  in 2014 before any emission reductions                   any emission reductions from CSAPR
                                                  monitoring locations throughout the                     from CSAPR. In light of the court’s                      removes the EPA’s authority to issue
                                                  country both for 2012, the intended start               holding as to the legal import of the                    new FIP requirements for purposes of
                                                  year of Phase 1 of the CSAPR trading                    2014 base case air quality projections for               responding to the court’s remand of the
                                                  programs, and for 2014, the intended                    the ozone receptors described above, the                 state’s CSAPR Phase 2 SO2 budget. The
                                                  start year of Phase 2 of the programs.                  EPA considered the legal import of the                   finding likewise eliminates any
                                                  The base case projections were designed                 analogous 2014 base case air quality                     obligation of the EPA to issue new FIP
                                                  to represent projected air quality at                   projections for the Madison County                       requirements addressing a remaining
                                                  these monitoring locations without any                  PM2.5 receptor with respect to Texas’                    transport obligation of the state with
                                                  emission reductions from CSAPR. In the                  PM2.5-related obligations under CSAPR.                   regard to this NAAQS following
                                                  CSAPR rulemaking, the EPA used the                      There are three relevant record data                     withdrawal of the existing CSAPR FIP
                                                  2012 base case air quality projections for              elements. First, the record indicates that               requirements, because the state has no
                                                  purposes of identifying ozone receptors                 the only PM2.5 receptor to which Texas                   such remaining transport obligation
                                                  projected to have air quality problems                  is linked for purposes of determining                    following the withdrawal.
                                                  and determining states that were linked                 possible obligations under the good                         As noted in the proposal, the
                                                  to those receptors and that therefore                   neighbor provision is the receptor in                    modeling for the CSAPR final rule also
                                                  might have transport obligations under                  Madison County, Illinois.29 Second, the                  linked Texas to a downwind air quality
                                                  both Phase 1 and Phase 2 of the CSAPR                   projected maximum design value 30 for                    problem with regard to the 2006 24-hour
                                                  trading programs. However, in EME                       annual PM2.5 at the Madison County                       PM2.5 NAAQS, but the EPA did not rely
                                                  Homer City II, the D.C. Circuit agreed                  receptor is 15.02 micrograms per cubic                   on the linkage with regard to this
                                                  with petitioners27 that the EPA should                  meter (mg/m3) in the 2014 base case.31                   NAAQS as a basis for establishing
                                                  also have considered the 2014 base case                                                                          CSAPR FIP requirements for Texas
                                                  air quality projections for these                          28 EME Homer City II, 795 F.3d at 129–30. The
                                                                                                                                                                   EGUs. In the proposal, the EPA
                                                                                                          court also remanded the Phase 2 seasonal NOX             indicated that data in the final CSAPR
                                                                                                          budget for an eleventh state (Texas), but on different
                                                     24 The EPA also determined in CSAPR and a
                                                                                                          grounds.                                                 record, reevaluated in light of EME
                                                  related supplemental rule that 25 states, including        29 See 76 FR at 48241, tables V.D–2 and V.D–3.        Homer City II, would show that Texas
                                                  Texas, had transport obligations with regard to the
                                                  1997 8-hour ozone NAAQS. In all, 28 states were
                                                                                                             30 The EPA independently considered linkages to       no longer has a transport obligation with
                                                  determined to have transport obligations related to     ‘‘nonattainment’’ and ‘‘maintenance’’ receptors. If      regard to the 2006 24-hour PM2.5
                                                  either PM2.5, ozone, or both. The EPA’s process for     both the projected average design value and the          NAAQS as of the beginning of Phase 2
                                                  determining states’ emissions limitations under         projected maximum design values for a receptor
                                                                                                          were above the triggering threshold, the receptor        of the CSAPR trading programs for SO2
                                                  CSAPR and the associated CSAPR FIP requirements
                                                  is described at length in the preamble to the CSAPR     was considered a nonattainment receptor. If the          and annual NOX, but that because Texas
                                                  final rule. See generally 77 FR at 48222–71.            projected maximum design value was above the             was not subject to CSAPR requirements
                                                                                                          triggering threshold but the projected average
                                                     25 As noted in the proposal and further discussed
                                                                                                          design value was not, the receptor was considered
                                                                                                                                                                   with regard to this NAAQS, the EPA
                                                  below, the modeling for the CSAPR final rule also       a maintenance receptor. Thus, if the projected           was not proposing to make a
                                                  linked Texas to a downwind air quality problem          maximum design value was not above the triggering        determination in this action as to any
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                                                  with regard to the 2006 24-hour PM2.5 NAAQS, but        threshold, the receptor was not considered either a
                                                  the EPA did not rely on the linkage with regard to                                                               obligation of Texas with regard to this
                                                                                                          nonattainment receptor or a maintenance receptor.
                                                  that NAAQS as a basis for establishing CSAPR FIP        See 76 FR at 48233.                                      NAAQS. Nevertheless, because
                                                  requirements for Texas EGUs. 81 FR at 78960 n.42;          31 See projected 2014 base case maximum annual        commenters raise the 2006 24-hour
                                                  see also 76 FR at 48243, 48214.                         PM2.5 design value for Madison County, Illinois          PM2.5 NAAQS in their comments, the
                                                     26 81 FR at 78960.
                                                                                                          receptor 171191007 at B–41 of the Air Quality            EPA will explain how the court’s
                                                     27 See Opening Brief of Industry and Labor
                                                                                                          Modeling Final Rule Technical Support Document,
                                                  Petitioners on Remand 8, 14, EME Homer City             Docket ID No. EPA–HQ–OAR–2009–0491–4140
                                                                                                                                                                   reasoning would apply with respect to
                                                  Generation, L.P. v. EPA, No. 11–1302 (D.C. Cir. filed   (June 2011) (CSAPR Final Rule Technical Support
                                                  December 10, 2014).                                     Document), available in the docket for this action.       32 76   FR at 48233.



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                                                  45486                 Federal Register / Vol. 82, No. 188 / Friday, September 29, 2017 / Rules and Regulations

                                                  the data for this NAAQS. The analysis                           The EPA disagrees with these                        commenters suggest that because the
                                                  for the 2006 24-hour PM2.5 NAAQS is                          comments. The proposal contained a                     court remanded the budgets without
                                                  essentially identical to the analysis                        complete explanation of the Agency’s                   vacatur instead of vacating the budgets
                                                  described above with regard to the 1997                      basis for this finding, including all                  outright, the court must have intended
                                                  annual PM2.5 NAAQS. Specifically, the                        necessary supporting data and                          for the Agency to replace rather than
                                                  Madison County receptor is the only                          documentation.37 As fully explained in                 simply withdraw the budgets. However,
                                                  PM2.5 receptor to which Texas was                            the proposal and reiterated above, the                 the court actually provided a different
                                                  linked for this NAAQS; 33 the projected                      Agency’s change in position as to Texas’               rationale for remanding without vacatur,
                                                  maximum design value for 24-hour                             transport obligation between the CSAPR                 including the statement that ‘‘some good
                                                  PM2.5 at the Madison County receptor is                      final rule and this action is readily                  neighbor obligations may be appropriate
                                                  35.3 mg/m3 in the 2014 base case; 34 and                     attributable to the D.C. Circuit’s holding             for some of the relevant states.’’ 39 The
                                                  the value that the EPA used to                               in EME Homer City II with regard to the                reference to ‘‘some’’ of the states
                                                  determine whether a particular PM2.5                         legal import of the 2014 base case air                 indicates that the court considered it
                                                  receptor should be identified as having                      quality projections in the final CSAPR                 likely that replacement budgets would
                                                  air quality problems that may trigger                        record. The court’s holding clarifies the              not be established in every instance, and
                                                  transport obligations with regard to the                     legal standard the Agency should have                  the use of the word ‘‘may’’ indicates that
                                                  2006 24-hour PM2.5 NAAQS is 35.5 mg/                         used when considering the information                  the court considered it possible that
                                                  m3, which is higher than the Madison                         in the final CSAPR record, which                       replacement budgets would not be
                                                  County maximum design value in the                           includes those air quality projections.                established in any instance. Thus,
                                                  2014 base case.35 Thus, the reevaluation                                                                            contrary to the commenters’ claims, the
                                                                                                               C. Responsiveness to the D.C. Circuit’s
                                                  of the final CSAPR record in light of the                                                                           court’s opinion clearly affords the
                                                                                                               Remand Instructions
                                                  D.C. Circuit’s holding also indicates that                                                                          Agency the discretion to determine the
                                                  the record would not support a finding                          The commenters assert that                          appropriate response to the remand and
                                                  of a transport obligation for Texas with                     withdrawal of the remanded Texas SO2                   does not prevent the Agency from
                                                  regard to the 2006 24-hour PM2.5                             budget without issuance of a                           determining upon reconsideration that
                                                  NAAQS as of the beginning of Phase 2                         presumably less stringent replacement                  the program is no longer needed for a
                                                  of the CSAPR trading programs for SO2                        budget is not responsive to the D.C.                   particular state with respect to a
                                                  and annual NOX.                                              Circuit’s remand instructions.                         particular pollutant and consequently
                                                     Overall, on the subject of the                            According to the commenters, the court                 not establishing a replacement budget.
                                                                                                               directed the EPA to develop a revised                     The commenters make several
                                                  proposed withdrawal of the FIP
                                                                                                               CSAPR FIP SO2 budget for Texas EGUs                    additional arguments in support of their
                                                  provisions and the proposed finding
                                                                                                               that does not over-control, and the EPA                contention that the FIP withdrawal is
                                                  that Texas will no longer have a
                                                                                                               must either do so or, alternatively, must              not responsive to the D.C. Circuit’s
                                                  transport obligation following
                                                                                                               allow Texas to submit a CSAPR SIP                      instructions. One commenter asserts
                                                  withdrawal of the FIP provisions, the
                                                                                                               with a higher SO2 budget. The                          that because the court stated that the
                                                  EPA received substantive comments
                                                                                                               commenters’ argument is intended to                    Agency could consider new information
                                                  from two parties.36 The remainder of
                                                                                                               provide a continued basis for reliance                 in responding to the remand, the court
                                                  this section summarizes these
                                                                                                               on CSAPR participation as an SO2                       must have intended for the Agency’s
                                                  commenters’ principal comments on
                                                                                                               BART alternative for Texas EGUs.                       response to involve the establishment of
                                                  this topic and provides the Agency’s                         Underlying the commenters’ arguments                   replacement budgets. This claim is a
                                                  response.                                                    is an apparent belief that a revised,                  non sequitur—the court’s
                                                  B. Adequacy of Rationale for Finding No                      higher CSAPR budget, whether issued                    acknowledgement that additional
                                                  Remaining Transport Obligation                               through a FIP or approved through a                    information may be considered says
                                                                                                               SIP, would automatically enable Texas                  nothing about what the Agency may or
                                                     The commenters state that the
                                                                                                               to rely on CSAPR participation as an                   must conclude from consideration of
                                                  Agency’s explanation for the proposed
                                                                                                               alternative to source-specific SO2 BART                that information. The same commenter
                                                  finding that Texas no longer has a
                                                                                                               requirements for the State’s EGUs under                also asserts that the Agency may not
                                                  transport obligation under CAA section
                                                                                                               40 CFR 51.308(e)(4).                                   rely on lack of FIP authority as the basis
                                                  110(a)(2)(D)(i)(I) with regard to the 1997                      The EPA disagrees with these
                                                  annual PM2.5 NAAQS as of the                                                                                        for not establishing a revised budget
                                                                                                               comments. As an initial matter, the D.C.               because lack of FIP authority was not
                                                  beginning of Phase 2 of the CSAPR                            Circuit in fact did not direct the Agency              the basis cited by the court for
                                                  trading programs for SO2 and annual                          to develop replacement budgets for the                 remanding the budget. This claim is also
                                                  NOX is inadequate or confusing, and                          Texas SO2 budget or any of the other                   a non sequitur—the Agency lacks
                                                  that the Agency must provide additional
                                                                                                               remanded CSAPR Phase 2 budgets.                        authority to issue a revised budget and
                                                  explanation for changing its position on
                                                                                                               Rather, the court found that certain                   therefore may not do so, regardless of
                                                  the continued existence of a Texas
                                                                                                               budgets were invalid and remanded to                   what additional defects the court may
                                                  transport obligation from the contrary
                                                                                                               the EPA to ‘‘reconsider’’ them,38 a                    have cited in ordering the remand.
                                                  position taken by the Agency when                                                                                      The other commenter asserts that the
                                                                                                               general instruction that encompasses a
                                                  promulgating the CSAPR final rule.                                                                                  FIP withdrawal would disrupt
                                                                                                               range of possible Agency actions upon
                                                       33 See
                                                                                                               reconsideration. The commenters cite                   allowance markets, contrary to the
                                                                76 FR at 48242–44, tables V.D–5 and V.D–
                                                                                                               no statement from the court’s opinion                  concern expressed by the D.C. Circuit
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                                                  6.
                                                     34 See projected 2014 base case maximum 24-               that requires the establishment of                     that outright vacatur, rather than
                                                  hour PM2.5 design value for Madison County,                  replacement budgets, but assert that                   remand without vacatur, could have
                                                  Illinois receptor 171191007 at B–70 of the CSAPR             such a requirement must be inferred                    that impact. While the EPA agrees with
                                                  Final Rule Technical Support Document, available                                                                    the concern expressed by the court and
                                                  in the docket for this action.
                                                                                                               from the court’s other statements or
                                                     35 76 FR at 48234–35.                                     determinations. For example, the                       the commenter regarding the potentially
                                                     36 A third commenter states without further                                                                      disruptive effects of outright vacatur on
                                                                                                                 37 81   FR at 78960.
                                                  elaboration that it does not oppose the FIP
                                                  withdrawal.                                                    38 EME    Homer City II, 795 F.3d at 124, 138.         39 Id.   at 132 (emphasis added).



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                                                                   Federal Register / Vol. 82, No. 188 / Friday, September 29, 2017 / Rules and Regulations                                                 45487

                                                  allowance markets, the Agency does not                   issue revised FIP requirements.42 The                 D. Consistency of Responses to Remand
                                                  agree that the court’s concern regarding                 reasons for the finding are discussed                 Across States
                                                  unintended consequences of a judicial                    above and were discussed at length in                    One commenter states that by
                                                  vacatur provides a basis for not taking                  the proposal.43                                       withdrawing the FIP requirements the
                                                  final action at this time to withdraw the                   With regard to the commenters’                     EPA is arbitrarily singling Texas out as
                                                  Texas FIP requirements, for two reasons.                 suggested alternative response to the                 the only state with a remanded CSAPR
                                                  First, the EPA believes that the court did               remand—that the EPA allow Texas to                    budget whose EGUs will lose the ability
                                                  not intend for its expression of concern                 submit a CSAPR SIP with a higher SO2                  to rely on CSAPR participation as a
                                                  to constrain the Agency’s range of                       budget in order to allow the state to rely            BART alternative. The commenter
                                                  possible responses to the remand. As                     on CSAPR participation as an SO2                      further asserts that the Agency’s ‘‘sole
                                                  discussed above, it is clear from the                    BART alternative even if the state’s                  purpose’’ in withdrawing the FIP
                                                  opinion that the court anticipated the                   EGUs are no longer subject to a CSAPR                 requirements is to facilitate the
                                                  possibility that upon reconsideration                    FIP SO2 budget—the comment is not                     imposition of source-specific SO2 BART
                                                  the EPA would determine that some, or                    properly directed to the EPA, because                 requirements on Texas EGUs through a
                                                  even all, of the remanded budgets                        Texas has not expressed interest in                   different action.
                                                  should be withdrawn and not replaced.                    submitting a CSAPR SIP.44 Moreover,                      The EPA disagrees with these
                                                  Second, in this instance, emissions data                 even if consideration of Texas’ BART                  comments, which are entirely contrary
                                                  reported by the EGUs covered by the                      obligations were relevant for our action              to the record. First, on the question of
                                                  CSAPR trading programs for SO2 and                       on remand, reliance on CSAPR                          uniform application of the CSAPR-
                                                  annual NOX demonstrate that                              participation with a higher budget                    better-than-BART regulations, no state
                                                  withdrawal of the FIP provisions                         would not automatically qualify as an                 whose EGUs do not participate in a
                                                  requiring Texas EGUs to participate in                   SO2 BART alternative under the terms                  CSAPR trading program for a given
                                                  these programs will not cause allowance                  of the CSAPR-better-than-BART rule.                   pollutant can rely on CSAPR
                                                  market disruption for the programs’                      That rule allows a state to rely on its               participation as a BART alternative for
                                                  remaining participants. Under both                       EGUs’ participation in a CSAPR SIP                    that pollutant. In response to the D.C.
                                                  programs, the totals of the emissions                    trading program only if the EPA                       Circuit’s remand of CSAPR Phase 2
                                                  reported by participating EGUs for both                  approves the SIP as ‘‘meeting the                     budgets, the EPA has withdrawn or
                                                  2015 and 2016 in states other than                       requirements of’’ the CSAPR regulations               expects to withdraw all fifteen
                                                  Texas were less than the sums of the                     at 40 CFR 52.38 and 52.39.45 As relevant              remanded budgets. As explained in the
                                                  Phase 2 emissions budgets for these                      here, the CSAPR regulations at § 52.39                proposal, in thirteen instances, the state
                                                  other states.40 Likewise, under both                     expressly preclude a state’s SO2                      will retain eligibility to rely on the
                                                  programs the totals of the emissions                     emissions budget from exceeding the                   CSAPR-better-than-BART rule for the
                                                  reported by Texas EGUs for both 2015                     SO2 emissions budget established under                pollutant in question through either the
                                                  and 2016 were less than the Texas Phase                  the CSAPR FIP trading program that the                EPA’s establishment of a new CSAPR
                                                  2 budgets.41 The elimination from the                    CSAPR SIP trading program would                       budget to address a more stringent
                                                  programs of Texas EGUs and the                           replace.46 Thus, even if the D.C.                     NAAQS (eight seasonal NOX budgets),
                                                  allowances allocated to Texas EGUs is                    Circuit’s remand could serve as a basis               the state’s sources’ continued
                                                  therefore not expected to cause either                   for the EPA to approve a SIP revision                 participation in a different CSAPR
                                                  shortages of allowances available for                    that does not satisfy § 52.39 on the                  trading program for the same pollutant
                                                  purchase by EGUs in the other states or                  grounds that the state’s transport                    (two seasonal NOX budgets), or the
                                                  the loss of an important market for sale                 obligations can be addressed by a less                state’s voluntary adoption in a SIP
                                                  of surplus allowances by EGUs in the                     stringent budget, the CSAPR-better-                   revision of a CSAPR state budget as
                                                  other states. In these circumstances, the                than-BART rule at 40 CFR 51.308(e)(4)                 stringent as the remanded CSAPR FIP
                                                  EPA anticipates that the FIP withdrawal                  would not be satisfied. A SIP approved                budget (three SO2 budgets).48 In the
                                                  will have little impact on the allowance                 on such a basis could in theory provide               remaining two instances where a
                                                  market in either trading program.                        a mechanism for Texas EGUs to                         remanded budget is being withdrawn
                                                     With regard to the two commenters’                    participate in CSAPR with a higher SO2                and none of the three options for
                                                  preferred response to the remand—that                    budget than the remanded FIP budget                   preserving eligibility to rely on CSAPR-
                                                  the EPA establish a revised, less                        despite the Agency’s lack of authority to             better-than-BART applies—Texas’ SO2
                                                  stringent SO2 budget for Texas EGUs                      set a revised SO2 budget through a                    budget and Florida’s seasonal NOX
                                                  and implement that budget through a                      revised FIP. However, because of the                  budget—the state is losing the
                                                  revised FIP—such an action is infeasible                 increased SO2 budget, such a SIP would
                                                  because the Agency lacks the necessary                   not ‘‘meet[] the requirements of . . .                language, the Agency disagrees. The court held that
                                                  legal authority. In this action, the EPA                 § 52.39’’ and therefore would not allow               the remanded budgets may over-control relative to
                                                  is finalizing the proposed finding that                  the state to rely on its EGUs’                        the states’ transport obligations, but did not
                                                                                                                                                                 determine that the budgets are more stringent than
                                                  Texas no longer has a transport                          participation in the CSAPR SIP trading                necessary to serve as an alternative to source-
                                                  obligation under CAA section                             program as an alternative to source-                  specific BART. Further, the CSAPR-better-than-
                                                  110(a)(2)(D)(i)(I) for the 1997 annual                   specific BART for SO2.47                              BART rule rests on an evaluation of the projected
                                                  PM2.5 NAAQS. That finding addresses                                                                            visibility impacts from CSAPR implementation
                                                                                                                                                                 assuming the final CSAPR Phase 2 budget
                                                  the deficiency in the Texas SIP that was                   42 See  CAA section 110(c).
                                                                                                                                                                 stringencies (including the 2012 CSAPR budget
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                                                                                                             43 81  FR at 78960.
                                                  the basis for issuance of the withdrawn                                                                        revisions, which were accounted for in the analysis
                                                                                                              44 Texas did not submit comments on the
                                                  FIP requirements and, therefore,                                                                               for the final CSAPR-better-than-BART rule). Given
                                                                                                           proposal for this action.                             this, continuing to enforce the CSAPR-better-than-
                                                  because there is no longer a deficiency,                    45 40 CFR 51.308(e)(4).
                                                                                                                                                                 BART rule’s requirement that a state’s participation
                                                  the Agency no longer has authority to                       46 40 CFR 52.39(i)(1)(i).                          in CSAPR through a SIP must ‘‘meet[] the
                                                                                                              47 To the extent the commenters are suggesting     requirements of . . . § 52.39’’—including the
                                                    40 See ‘‘2015–2016 Compliance Summary for                                                                    requirement for a state budget no less stringent than
                                                                                                           that the D.C. Circuit’s holdings in EME Homer City
                                                  CSAPR SO2 Group 2 and NOX Annual Trading                 II require the Agency to find that a SIP with a       was analyzed for purposes of promulgating the
                                                  Programs,’’ available in the docket for this action.     revised, higher SO2 budget would somehow satisfy      rule—is entirely reasonable.
                                                    41 Id.                                                 the CSAPR-better-than-BART rule despite its plain        48 71 FR at 78956–57.




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                                                  45488            Federal Register / Vol. 82, No. 188 / Friday, September 29, 2017 / Rules and Regulations

                                                  opportunity to rely on CSAPR                             their preference to pursue the SIP                      remain in place for the time being for
                                                  participation as a BART alternative for                  revision option. The EPA approved                       EGUs in Georgia and South Carolina,
                                                  that pollutant.49 Thus, Texas is being                   Alabama’s CSAPR SIP revision in 2016                    and the EPA is not proposing their
                                                  treated the same as every other state                    and, accordingly, the FIP provisions                    withdrawal at this time based on the
                                                  with respect to use of the CSAPR-better-                 requiring its EGUs to participate in the                reasonable expectation that such
                                                  than-BART rule.50                                        CSAPR federal trading programs for SO2                  withdrawal will be automatically
                                                     Second, on the question of the EPA’s                  and annual NOX have been                                accomplished as a result of the Agency’s
                                                  purpose in withdrawing the FIP                           automatically withdrawn.53 Georgia and                  action on those states’ SIP submittals,
                                                  requirements, that purpose is to address                 South Carolina committed to the EPA in                  just as with Alabama.58 Because Texas
                                                  the court’s remand. As explained in the                  2016 to submit similar CSAPR SIP                        has indicated that it will not submit a
                                                  proposal, before initiating this action,                 revisions by deadlines falling in                       CSAPR SIP revision, the EPA is
                                                  the EPA communicated with officials in                   September 2017 and August 2017,                         proceeding with this action to withdraw
                                                  all four states with remanded SO2                        respectively.54 Georgia has in fact now                 the FIP requirements for Texas EGUs,
                                                  budgets—Alabama, Georgia, South                          submitted its SIP to the EPA for                        consistent with the intended approach
                                                  Carolina, and Texas—regarding the                        approval,55 South Carolina has                          previously communicated to officials for
                                                  EPA’s intent to respond to the remand                    submitted its proposed state CSAPR                      all four states. Texas has had the same
                                                  of the Phase 2 SO2 budgets by                            trading program rules and has requested                 set of options available to all four states
                                                  withdrawing the FIP provisions                           that the EPA begin the SIP approval                     with remanded SO2 budgets and has
                                                  requiring the states’ EGUs to participate                process under the Agency’s parallel                     selected a different option than the
                                                  in the CSAPR federal trading programs                    processing procedure,56 and the EPA                     other three states.
                                                  for SO2 and annual NOX.51 The EPA                        has proposed to approve both SIP
                                                  explained that each state would lose its                 revisions.57 The CSAPR FIP provisions                   E. Consistency of Consideration of D.C.
                                                  ability to rely on CSAPR participation as                                                                        Circuit’s Holding Across States
                                                  a BART alternative for SO2 and/or NOX                       53 Air Plan Approval; Alabama; Cross-State Air         One commenter asserts that the EPA
                                                  if its EGUs no longer participated in the                Pollution Rule, 81 FR 59869 (August 31, 2016).          has not analyzed whether other states
                                                                                                              54 See letters to Heather McTeer Toney, Regional
                                                  CSAPR trading programs, but that the                                                                             covered by CSAPR are linked only to
                                                                                                           Administrator, EPA Region 4, from Judson H.
                                                  state could preserve that ability, if                    Turner, Director of the Environmental Protection        receptors for which the 2014 base case
                                                  desired, by submitting a CSAPR SIP                       Division, Georgia Department of Natural Resources       projections do not show air quality
                                                  revision replacing the CSAPR federal                     (May 26, 2016) and from Myra C. Reece, Director         problems, and that ‘‘[b]y not performing
                                                                                                           of Environmental Affairs, South Carolina
                                                  trading programs with CSAPR state                        Department of Health and Environmental Control
                                                                                                                                                                   that analysis, the EPA is arbitrarily
                                                  trading programs applying state-                         (April 19, 2016), available in the docket for this      singling Texas out for removal from the
                                                  established budgets no less stringent                    action. The EPA has conditionally approved the          CSAPR program.’’
                                                  than the remanded federally-established                  CAA section 110(a)(2)(D)(i)(II) prong 4 visibility        The EPA disagrees with these
                                                                                                           element for multiple NAAQS in the Georgia and
                                                  budgets (i.e., budgets consistent with                   South Carolina SIPs based on each state’s               comments. With respect to the budgets
                                                  the 2012 CSAPR-better-than-BART                          commitment to submit a CSAPR SIP revision. 81 FR        that were not remanded by the court,
                                                  analytic demonstration).52 Alabama,                      65899, 65900 (September 26, 2016) (Georgia); 81 FR      the Agency has confirmed for each such
                                                  Georgia, and South Carolina indicated                    56512, 56513 (August 22, 2016) (South Carolina).        budget that the state is linked to at least
                                                                                                           Each state committed to submit its CSAPR SIP
                                                                                                           revision within one year of the date of the Agency’s    one receptor for which the base case
                                                     49 As noted in the proposal, 81 FR at 78962, n.55,
                                                                                                           final conditional approval of the state’s prong 4 SIP   2014 air quality projections showed air
                                                  the EPA has already approved the incorporation           revision. Failure of a state to meet a commitment       quality problems. The court’s holding as
                                                  into Florida’s SIP of determinations regarding           serving as the basis for a conditional SIP approval
                                                  source-specific NOX BART. 77 FR 71111, 71113–14          results in automatic conversion of the conditional
                                                                                                                                                                   to lack of authority to establish Phase 2
                                                  (November 29, 2012); 78 FR 53250, 53267 (August          approval to a disapproval.                              emission reduction requirements for a
                                                  29, 2013).                                                  55 See letter to V. Anne Heard, Acting Regional      state in the absence of any linkage to a
                                                     50 As a further example of the consistent
                                                                                                           Administrator, EPA Region 4, from Richard E.            projected air quality problem in the
                                                  treatment of Texas, the EPA notes that, despite the      Dunn, Director, Environmental Protection Division,
                                                  withdrawal of the Texas FIP requirements relating                                                                2014 base case therefore does not extend
                                                                                                           Georgia Department of Natural Resources (July 26,
                                                  to annual NOX emissions, the state will be able to       2017), available in the docket for this action.         to these budgets.59
                                                  continue to rely on the CSAPR-better-than-BART              56 See letter to V. Anne Heard, Acting Regional        With respect to the remanded
                                                  rule for NOX as long as the state’s EGUs continue        Administrator, EPA Region 4, from Myra C. Reece,        budgets, the EPA again rejects the
                                                  to participate in a CSAPR trading program for            Director of Environmental Affairs, South Carolina
                                                  seasonal NOX emissions. See 81 FR at 78955 n.4                                                                   suggestion that Texas is being treated
                                                                                                           Department of Health and Environmental Control
                                                  and 78956 n.7.                                           (May 26, 2017), available in the docket for this
                                                                                                                                                                   differently than any other state. As
                                                     51 See memo entitled ‘‘The U.S. Environmental
                                                                                                           action. Under the parallel processing procedure, the    noted in the response above to the
                                                  Protection Agency’s Plan for Responding to the           EPA works closely with the state agency during          comments concerning the consistency of
                                                  Remand of the Cross-State Air Pollution Rule Phase       regulatory development, and the state submits a
                                                  2 SO2 Budgets for Alabama, Georgia, South Carolina
                                                                                                                                                                   the Agency’s responses to the remand,
                                                                                                           copy of its proposed regulations to the EPA before
                                                  and Texas’’ from Janet G. McCabe, EPA Acting             completion of the state’s public notice and adoption
                                                  Assistant Administrator for Air and Radiation, to                                                                   58 If the EPA disapproves Georgia’s or South
                                                                                                           process. The EPA reviews the proposed state action,
                                                  EPA Regional Air Division Directors (June 27,            prepares a notice of proposed EPA action (approval      Carolina’s SIP submittal, the EPA will propose to
                                                  2016), available in the docket for this action. The      or disapproval) for publication in the Federal          withdraw the FIP provisions requiring that state’s
                                                  memo directs the Regional Air Division Directors to      Register, and provides public notice concurrently       EGUs to participate in the CSAPR federal trading
                                                  share the memo with state officials. The EPA also        with the state’s process. After the state adopts its    programs for SO2 and annual NOX, consistent with
                                                  communicated orally with officials in Alabama,           final regulations and submits its formal SIP revision   the action taken here for Texas EGUs.
                                                  Georgia, South Carolina, and Texas in advance of         request, the EPA reviews the SIP submission for            59 See 76 FR at 48241–44, tables V.D–2, V.D–3,
                                                  the memo.                                                changes from proposal and either prepares a notice      V.D–5, and V.D–6 (annual and 24-hour PM2.5
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                                                     52 Although the D.C. Circuit remanded the states’     of final EPA action or, if the state has made           linkages); id. at 48246, tables V.D–8 and V.D–9
                                                  Phase 2 SO2 budgets because it determined that the       significant changes, may re-propose before taking       (ozone linkages); CSAPR Final Rule Technical
                                                  budgets may be more stringent than necessary to          final EPA action. The public comment period on          Support Document at B–35 to B–92 (2014 base case
                                                  address the states’ identified PM2.5 transport           South Carolina’s proposed regulations ended on          maximum design values for annual and 24-hour
                                                  obligations, nothing in the court’s decision affects     June 26, 2017, and the state expects its final          PM2.5); id. at B–4 to B–34 (2014 base case maximum
                                                  the states’ authority to seek incorporation into their   regulations to become effective in August 2017. Id.     design values for ozone). As discussed above, the
                                                  SIPs of state-established budgets as stringent as the       57 Air Plan Approval; Georgia; Cross-State Air       relevant triggering values for annual and 24-hour
                                                  remanded federally-established budgets or limits         Pollution Rule, 82 FR 38866 (August 16, 2017); Air      PM2.5 are 15.05 mg/m3 and 35.5 mg/m3, respectively.
                                                  the EPA’s authority to approve such SIP revisions.       Plan Approval; South Carolina; Cross-State Air          The relevant triggering value for ozone is 85 parts
                                                  See CAA sections 116, 110(k)(3).                         Pollution Rule, 82 FR 37389 (August 10, 2017).          per billion (ppb). 76 FR at 48236.



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                                                                   Federal Register / Vol. 82, No. 188 / Friday, September 29, 2017 / Rules and Regulations                                                     45489

                                                  the FIP requirements to comply with all                     The EPA disagrees with this comment                    CSAPR rulemaking, and the Agency has
                                                  the remanded budgets, not just the                       for three reasons. First, as noted above,                 not identified interstate transport
                                                  remanded Texas SO2 budget, have been                     the Agency is responding to the court’s                   problems with respect to the 2012
                                                  withdrawn or are expected to be                          remand of all fifteen CSAPR Phase 2                       annual PM2.5 NAAQS sufficient to
                                                  withdrawn. Further, as discussed above,                  SO2 and seasonal NOX budgets in the                       justify a new national rulemaking at this
                                                  in the cases of ten of the eleven                        same way, namely by withdrawing the                       time.
                                                  remanded seasonal NOX budgets, the                       FIP provisions requiring affected EGUs
                                                  absence of air quality problems at the                   to comply with the remanded budgets.63                       Third, the EPA lacks authority to rely
                                                  relevant receptors in the 2014 base case                 The differences noted by the                              on a transport obligation for Texas with
                                                  projections was expressly cited by the                   commenters are differences only in the                    respect to either the 2006 24-hour PM2.5
                                                  court as the basis for remanding the                     actions that are being coordinated with                   NAAQS or the 2012 annual PM2.5
                                                  budgets. The EPA’s reliance on the                       the responses, not differences in the                     NAAQS as the legal basis to support
                                                  court’s holding as applied to those                      responses themselves.                                     imposing an SO2 budget for the state via
                                                  states’ ozone-related transport                             Second, the differences in the                         a FIP. Under CAA section 110(c), the
                                                  obligations with regard to the 1997 8-                   coordinated actions are reasonable given                  Agency’s authority to issue a FIP with
                                                  hour ozone NAAQS is indistinguishable                    the differences in other regulatory                       respect to a particular state obligation
                                                  from the EPA’s reliance on the same                      activities being undertaken for the two                   arises either when the Agency finds that
                                                  holding as applied to Texas’ PM2.5-                      pollutants. The EPA coordinated the                       a state has failed to submit a required
                                                  related transport obligations with regard                withdrawal of the eleven remanded                         SIP or when the Agency disapproves a
                                                  to the 1997 annual PM2.5 NAAQS.60                        seasonal NOX budgets addressing the                       submitted SIP. Neither of these
                                                                                                           1997 8-hour ozone NAAQS with the                          predicate events has occurred with
                                                  F. Potential Use of Texas FIP Budgets To                 establishment of new budgets for eight
                                                  Address a Different PM2.5 NAAQS                                                                                    regard to Texas’ transport obligations
                                                                                                           of those states addressing the 2008                       under either the 2006 24-hour PM2.5
                                                     Finally, the commenters state that the                8-hour ozone NAAQS because a
                                                  EPA should consider Texas’s obligations                                                                            NAAQS or the 2012 annual PM2.5
                                                                                                           rulemaking to address transported
                                                  to address interstate transport with                                                                               NAAQS.65 Commenters are correct that
                                                                                                           pollution with respect to the 2008
                                                  respect to the 2006 24-hour PM2.5                        8-hour ozone NAAQS was actively                           data in the final CSAPR record, as
                                                  NAAQS and/or the 2012 annual PM2.5                       under development at the time of the                      evaluated by the Agency when CSAPR
                                                  NAAQS before withdrawing Texas’ FIP                      court’s decision.64 Under this                            was promulgated, showed that PM2.5
                                                  obligations. As noted in the proposal                    circumstance, such coordination was                       pollution transported from Texas to
                                                  and discussed above, in the case of                      efficient and fully consistent with the                   downwind states exceeded the
                                                  Texas, CSAPR FIP obligations related to                  court’s expressed intent to minimize                      minimum threshold level used to
                                                  PM2.5 pollution were established with                    market disruption and to continue to                      establish which states might have
                                                  respect to the 1997 annual PM2.5                         address statutory obligations to reduce                   transport obligations for the 2006 24-
                                                  NAAQS only, even though for other                        transported pollution where                               hour PM2.5 NAAQS. However, as noted
                                                  states the CSAPR FIPs were based on                      appropriate. In contrast, no analogous                    in the proposal 66 and discussed above,
                                                  the states’ transport obligations with                   opportunity is available to coordinate                    the 2014 base case air quality
                                                  respect to both the 1997 annual PM2.5                    withdrawal of the remanded SO2                            projections in the final CSAPR record,
                                                  NAAQS and the 2006 24-hour PM2.5                         budgets with another rulemaking                           when reevaluated in light of the D.C.
                                                  NAAQS.61 The commenters assert that                      addressing a more recent PM2.5 NAAQS                      Circuit’s holdings in EME Homer City II,
                                                  failure to consider Texas’ potential                     because states’ transport obligations                     would support a finding that as of the
                                                  transport obligations with respect to the                with respect to the 2006 24-hour PM2.5                    beginning of Phase 2 of the CSAPR
                                                  2006 24-hour PM2.5 NAAQS now before                      NAAQS have already been largely                           trading programs for SO2 and annual
                                                  withdrawing the FIP obligations would                    addressed through either SIPs or the                      NOX, Texas does not have an ongoing
                                                  be inconsistent with the manner in
                                                  which the EPA responded to the D.C.                                                                                transport obligation with respect to the
                                                                                                           CSAPR final record mandates that the EPA consider
                                                  Circuit’s remand of seasonal NOX                         the state’s transport obligations with respect to the
                                                                                                                                                                     2006 24-hour PM2.5 NAAQS. Thus, even
                                                  budgets and inconsistent with data in                    2006 24-hour PM2.5 NAAQS before withdrawing the           if the EPA had taken final action
                                                  the CSAPR record that links Texas to                     FIP requirements. Wrongly attributing this ‘‘theory’’     disapproving Texas’ outstanding SIP
                                                                                                           to the Agency, the commenter ignores other factors        submission addressing transported
                                                  downwind air quality problems with                       the Agency must take into account before
                                                  respect to the 2006 24-hour PM2.5                        promulgating FIP requirements, such as whether a          pollution with regard to the 2006 24-
                                                  NAAQS.62                                                 statutory condition establishing FIP authority has        hour PM2.5 NAAQS, such a disapproval
                                                                                                           been satisfied. In any event, for this final action the   would no longer provide a basis for the
                                                                                                           Agency has expressly considered (and rejected) the
                                                    60 In the case of the last remanded seasonal NO
                                                                                                      X
                                                                                                           option of leaving the Texas FIP requirements in           Agency to issue a FIP in this instance,
                                                  budget—for Texas—the court remanded the budget
                                                  on different grounds, and the EPA subsequently           place to address the state’s transport obligations        because without any remaining
                                                  determined through further analysis that the state       with respect to this NAAQS, as discussed in this          transport obligation, there is no
                                                                                                           section.
                                                  has no remaining transport obligation under CAA
                                                                                                             63 As discussed in the proposal, addressing the
                                                                                                                                                                     remaining SIP deficiency to address
                                                  section 110(a)(2)(D)(i)(I) with respect to the 1997 8-
                                                  hour ozone NAAQS. See 81 FR at 74524. In the             remanded budgets by withdrawing the FIP                   through a FIP.
                                                  cases of the remanded SO2 budgets for Alabama,           requirements is also fully consistent with the
                                                  Georgia, and South Carolina, the states are adopting     manner in which EPA has responded to previous
                                                  equally stringent CSAPR SIP budgets to replace the       judicial remands regarding obligations of individual         65 Texas has submitted SIPs intended to address
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                                                  withdrawn FIP budgets in order to preserve the           states under other EPA rules addressing multiple          its transport obligations under each of these
                                                  states’ options to rely on the CSAPR-better-than-        states’ transport obligations. 81 FR at 78959.            NAAQS. In the case of the 2006 24-hour PM2.5
                                                  BART rule, thereby rendering moot any questions            64 As noted in the proposal, for three of the eleven
                                                                                                                                                                     NAAQS, the EPA has proposed to disapprove the
                                                  about the states’ remaining transport obligations        states with remanded seasonal NOX budgets                 state’s transport SIP submittal, 76 FR 20602 (April
                                                  and EPA’s authority or obligation to issue revised       addressing the 1997 8-hour ozone NAAQS—
                                                  FIP budgets to address such transport obligations.                                                                 13, 2011), but has yet not taken final action. In the
                                                                                                           Florida, North Carolina, and South Carolina—the
                                                    61 See 81 FR at 78960 n.42; see also 76 FR at          EPA found no transport obligations with respect to        case of the 2012 annual PM2.5 NAAQS, the EPA has
                                                  48213, table III–1.                                      the 2008 8-hour ozone NAAQS and did not                   not yet taken any action on the state’s transport SIP
                                                    62 One of the commenters asserts that ‘‘under          establish seasonal NOX budgets addressing that            submittal.
                                                  EPA’s own theory,’’ the existence of this data in the    NAAQS. 81 FR at 78959.                                       66 81 FR at 78955 n.5.




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                                                  45490             Federal Register / Vol. 82, No. 188 / Friday, September 29, 2017 / Rules and Regulations

                                                  IV. Sensitivity Analysis Regarding                        the third scenario reflected                              would, or were expected to, remain
                                                  CSAPR Participation as a BART                             implementation of CSAPR in covered                        subject to CSAPR for annual NOX after
                                                  Alternative                                               states and presumptive source-specific                    the end of their CSAPR obligations for
                                                                                                            BART for each pollutant in states where                   seasonal NOX.72 For Florida and Texas,
                                                  A. Summary
                                                                                                            CSAPR did not apply for that pollutant                    this assessment was based on the small
                                                     As explained in the proposal and                       (the three scenarios are referred to here                 magnitudes of the differences in
                                                  summarized in section II.B, the EPA                       as the base case scenario, the BART                       projected total NOX emissions from the
                                                  amended the Regional Haze Rule in                         scenario, and the original CSAPR                          EGUs in each of those states between
                                                  2012 to authorize states whose EGUs                       scenario, respectively). The EPA used                     the original CSAPR scenario and the
                                                  participate in CSAPR trading programs                     the results of the three scenarios to                     relevant other modeled scenarios,
                                                  for a given pollutant to rely on CSAPR                    compare the projected visibility impacts                  combined with the dominance of sulfate
                                                  participation as a BART alternative for                   of CSAPR and BART under a two-                            impacts compared to nitrate impacts on
                                                  that pollutant. The CSAPR-better-than-                    pronged ‘‘better-than-BART’’ test.69 The                  visibility (especially in the South).73
                                                  BART rule rests on an analytic                            first prong—a requirement that visibility                 With respect to the removal of Texas
                                                  demonstration that implementation of                      must not decline in any Class I area                      from CSAPR for SO2, the EPA explained
                                                  CSAPR as expected to take effect at that                  under the proposed BART alternative—                      that the change would have caused a
                                                  time would achieve greater reasonable                     was evaluated by comparing the                            large reduction in the Texas SO2
                                                  progress than BART toward the national                    projected visibility conditions under the                 emissions as modeled in the original
                                                  goal of natural visibility conditions in                  original CSAPR scenario and the base                      CSAPR scenario,74 thereby causing the
                                                  Class I areas. As part of the proposal for                case scenario. The second prong—a                         visibility impacts comparison to support
                                                  this action, the EPA included a                           requirement that there must be an                         the Agency’s determination that CSAPR
                                                  sensitivity analysis to the 2012 analytic                 overall visibility improvement on                         participation met the criteria for a BART
                                                  demonstration showing that the 2012                       average across all affected Class I areas                 alternative even more strongly than the
                                                  analysis would have supported the same                    under the proposed BART alternative                       comparison as originally performed in
                                                  conclusion if the actions being taken in                  relative to source-specific BART—was                      2012. Thus, because the only material
                                                  response to the D.C. Circuit’s remand of                  evaluated by comparing the projected                      change from the original 2012 analytic
                                                  various CSAPR Phase 2 budgets 67 had                      visibility conditions under the original                  demonstration would be the relative
                                                  been reflected in the 2012 analysis. In                   CSAPR scenario and the BART scenario.                     visibility improvement in a revised
                                                  this action, upon consideration of                        Based on these comparisons, and also                      CSAPR scenario resulting from the
                                                  comments received, the EPA is                             taking account of revisions made to                       removal of Texas from CSAPR for SO2,
                                                  affirming the sensitivity analysis from                   CSAPR after the 2011 modeling but                         the sensitivity analysis as proposed
                                                  the proposal that concluded that the                      before or contemporaneous with the                        indicated that the 2012 analytic
                                                  2012 analytic demonstration is still                      2012 CSAPR-better-than-BART rule, the                     demonstration remains valid.
                                                  valid and is consequently affirming that                  EPA concluded that the original CSAPR                        The EPA received substantive
                                                  there is no need for revision of the                      scenario satisfied both prongs of the                     comments from two parties with respect
                                                  CSAPR-better-than-BART rule as a                          test.                                                     to the proposed sensitivity analysis. One
                                                  result of the changes in CSAPR’s                             The EPA’s proposed sensitivity                         commenter agrees with the EPA’s
                                                  geographic scope resulting from the                       analysis is set forth in detail in the                    conclusion and with all but one detail
                                                  Agency’s set of responses to the EME                      proposal for this action.70 To reiterate                  of the EPA’s methodology (which, if
                                                  Homer City II decision.                                   briefly, for the sensitivity analysis, the                changed as suggested by the commenter,
                                                     The original 2012 analytic                             Agency identified a total of five changes                 would strengthen the Agency’s
                                                  demonstration supporting participation                    in CSAPR’s geographic scope expected                      conclusion). The other commenter does
                                                  in CSAPR as a BART alternative was                        to occur as a result of actions                           not agree with either the conclusion or
                                                  based on an air quality modeling                          responding to the D.C. Circuit’s remand:
                                                  analysis comparing projected visibility                   The removal of Florida, North Carolina,                     72 81 FR at 78962.
                                                  conditions at relevant locations (referred                and South Carolina from CSAPR for                           73 Id.at 78962 (Florida), 78963 (Texas).
                                                  to in the proposal and here simply as                     seasonal NOX; the removal of Texas                          74 As noted above and discussed in the proposal,

                                                                                                                                                                      the original CSAPR scenario reflected projected
                                                  ‘‘Class I areas’’) under three scenarios.68               from CSAPR for annual NOX; and the                        implementation of CSAPR in covered states and
                                                  The first scenario reflected no                           removal of Texas from CSAPR for SO2.71                    presumptive source-specific BART in states where
                                                  implementation of either CSAPR or                         With respect to each of the four changes                  CSAPR did not apply for a pollutant. If Texas had
                                                  BART, the second scenario reflected                       related to NOX, the EPA explained that                    not been expected to be covered by CSAPR for SO2,
                                                                                                                                                                      the CSAPR scenario would therefore have reflected
                                                  implementation of presumptive source-                     the change would not have caused a                        SO2 emissions from Texas EGUs consistent with the
                                                  specific BART for both SO2 and NOX at                     sufficiently large change in the modeled                  implementation of presumptive source-specific SO2
                                                  BART-eligible EGUs nationwide, and                        NOX emissions in the original CSAPR                       BART instead of participation in CSAPR. While
                                                                                                                                                                      EPA projected that the CSAPR region overall would
                                                                                                            scenario to materially alter the visibility               have substantially lower SO2 emissions under
                                                     67 As described in sections II.A and III.D above,
                                                                                                            impacts comparison. For North Carolina                    CSAPR than under source-specific BART, for some
                                                  in addition to this action, the full set of actions       and South Carolina, this assessment was                   individual states, including Texas, SO2 emissions
                                                  being taken to respond to the remand includes the                                                                   under source-specific BART were projected to be
                                                  2016 CSAPR Update (see note 14 above)                     based on the fact that the states’ EGUs
                                                                                                                                                                      lower than under CSAPR. Thus, removing Texas
                                                  withdrawing the remanded seasonal NOX budgets                                                                       from CSAPR for SO2 in the CSAPR-better-than-
                                                  for eleven states and establishing new seasonal NOX          69 As described in the proposal, satisfaction of the
                                                                                                                                                                      BART analytic demonstration would have resulted
                                                  budgets to address a more recent ozone NAAQS for          two-pronged test based on an air quality modeling         in a decrease in projected SO2 emissions in the
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                                                  eight of those states, the action approving               analysis is one of three ways that an alternative         CSAPR scenario as modeled for the demonstration.
                                                  Alabama’s SIP revision establishing state CSAPR           measure may be demonstrated to be ‘‘better than           See 81 FR at 78962–63. In the proposal, the EPA
                                                  trading programs for SO2 and annual NOX to                BART’’ under the Regional Haze Rule. 81 FR at             identified the minimum amount of the projected
                                                  replace the corresponding federal CSAPR trading           78957.                                                    decrease in Texas SO2 emissions as 127,300 tons,
                                                  programs (see note 53 above), and expected actions           70 81 FR at 78961–64.
                                                                                                                                                                      based on the difference between projected Texas
                                                  to approve proposed SIP revisions for Georgia and            71 For purposes of the sensitivity analysis, the       SO2 emissions under the original CSAPR and BART
                                                  South Carolina comparable to Alabama’s SIP                EPA conservatively did not consider the increased         scenarios. Id.; see also ‘‘Projected Changes in Texas
                                                  revision (see note 57 above).                             stringency of the CSAPR seasonal NOX budgets              Emissions, Fossil Generation, and Fuel Usage
                                                     68 This background is set forth in greater detail in   established in the CSAPR Update. See generally 81         Between the Base Case, BART, and Original CSAPR
                                                  the proposal. See 81 FR at 78961–62.                      FR 74504.                                                 Scenarios,’’ available in the docket for this action.



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                                                                   Federal Register / Vol. 82, No. 188 / Friday, September 29, 2017 / Rules and Regulations                                         45491

                                                  the methodology, providing several                      alternative is inapt, because the basis for             it is based on outdated material, and
                                                  reasons. The remainder of this section                  such previous findings was that CAIR                    that instead of evaluating whether the
                                                  summarizes the opposing commenter’s                     itself (including its trading programs)                 2012 analytic demonstration remains
                                                  principal comments on this topic and                    would not exist, not that particular                    valid, the EPA must perform an entirely
                                                  provides the Agency’s response.                         CAIR budgets were invalid. Here, the                    new analytic demonstration based on a
                                                                                                          CSAPR trading program will still exist,                 new air quality modeling analysis using
                                                  B. Continued CSAPR Participation by
                                                                                                          making it possible for the states to                    more current data.
                                                  Georgia and South Carolina                                                                                         The EPA disagrees with this
                                                                                                          continue to participate in CSAPR
                                                     The commenter states that in order to                through voluntary SIPs notwithstanding                  comment. While criticizing aspects of
                                                  analyze the impacts on the CSAPR-                       the invalidation of the EPA’s authority                 the Agency’s analytic methodology, the
                                                  better-than-BART analytic                               to require compliance with the                          commenter does not dispute that the
                                                  demonstration from changes caused by                    remanded budgets through FIPs                           sensitivity analysis as conducted by the
                                                  the remand, in addition to any other                    addressing the states’ transport                        EPA using that methodology shows that
                                                  changes evaluated, the EPA must also                    obligations.                                            the 2012 analytic demonstration would
                                                  evaluate the removal of Georgia and                        The EPA considers the comment                        have been strengthened rather than
                                                  South Carolina from CSAPR’s SO2                         about reliance on mere commitments to                   weakened by the changes in CSAPR’s
                                                  programs, both because the D.C. Circuit                 submit SIPs to be largely moot because                  geographic scope that are occurring as a
                                                  remanded their SO2 budgets as invalid                   in the interval between submission of                   result of the D.C. Circuit’s remand. (The
                                                  and because in the commenter’s view it                  the comment and finalization of this                    methodological criticisms are addressed
                                                  is impermissible to rely in such a                      action, Georgia has submitted its SIP                   as the next comment below.) Further,
                                                  sensitivity analysis on mere                            revision and South Carolina has                         the commenter offers no compelling
                                                  commitments from those states to                        submitted its proposed state regulations                support for the suggestion that, in the
                                                  submit CSAPR SIPs in the future.                        and has requested that EPA begin the                    absence of any reason to doubt the
                                                  Further, according to the commenter,                    SIP approval process under the                          conclusion from the 2012 analytic
                                                  allowing these states to continue to                    Agency’s parallel processing                            demonstration, the EPA must
                                                  participate in CSAPR and then rely on                   procedure.76 Each of the state trading                  nevertheless conduct an entirely new
                                                  such participation as a BART alternative                program rules includes a state budget                   demonstration. As an asserted legal
                                                  after their SO2 budgets have been                       for SO2 or annual NOX emissions equal                   rationale for the need for a new analysis,
                                                  remanded would be inconsistent with                     to that state’s current FIP budget. To the              the commenter cites the Regional Haze
                                                  the EPA’s previous determinations that                  extent the commenter believes that for                  Rule provisions for approval of BART
                                                  states could no longer indefinitely rely                purposes of a sensitivity analysis the                  alternatives, noting that the provision
                                                  on participation in the former Clean Air                Agency may rely only on a SIP that has                  that the EPA followed in approving the
                                                  Interstate Rule (CAIR) trading programs                 been approved and not on a SIP or                       CSAPR-better-than-BART rule requires a
                                                  as a BART alternative after the D.C.                    proposed state rule that has been                       demonstration based on an air quality
                                                  Circuit found CAIR to be an invalid rule                submitted for EPA approval but not yet                  modeling analysis.79 The EPA has
                                                  that must be replaced.75                                approved, the Agency disagrees. Both                    performed one such air quality
                                                     The EPA disagrees with the comment                   states’ rules take the approach of                      modeling analysis and in this action has
                                                  that the Agency must consider Georgia                   incorporating by reference the federal                  shown that the analysis already
                                                  and South Carolina ineligible to                        CSAPR trading program rules, including                  performed would continue to support a
                                                  continue to participate in CSAPR’s SO2                  the relevant budget amounts, so there                   conclusion that CSAPR meets the
                                                  programs as a consequence of the                        are no substantive differences between                  criteria for a BART alternative
                                                  remand of their FIP budgets. The                        the state trading program rules being                   notwithstanding changes in CSAPR’s
                                                  CSAPR regulations expressly provide                     adopted by the states for inclusion in                  geographic scope. Contrary to the
                                                  for approval of CSAPR SIPs that meet                    their SIPs and the federal trading                      commenter’s suggestion, the regulations
                                                  certain conditions as replacements for                  program rules that are being replaced.                  do not say that the EPA must perform
                                                  CSAPR FIPs, and Georgia and South                       The Agency has proposed to approve                      an entirely new analysis. Similarly, the
                                                  Carolina (as well as Alabama) have                      both states’ SIP revisions 77 and at this               commenter’s assertion that changes in
                                                  elected to submit such SIPs. The                        time is unaware of any reason why the                   industry data since 2011 necessitate a
                                                  comparison that the commenter draws                     proposed approvals should not be                        new analytic demonstration amounts to
                                                  to the EPA’s previous findings that                     finalized. In these circumstances, the                  a call for recurring demonstrations that
                                                  states may no longer rely on                            EPA believes it is reasonable to rely on                a BART alternative results in greater
                                                  participation in CAIR as a BART                         the SIP submittals for purposes of                      reasonable progress than BART as the
                                                                                                          supporting an analytic assumption that                  industry evolves, rather than a one-time
                                                    75 In 2005, the EPA promulgated the Clean Air
                                                                                                          Georgia and South Carolina will                         demonstration when the alternative is
                                                  Interstate Rule (CAIR) addressing certain interstate
                                                  air pollution reduction obligations, 70 FR 25162
                                                                                                          continue to participate in CSAPR’s SO2                  approved. The regulations include no
                                                  (May 12, 2005), and amended the Regional Haze           and annual NOX programs at the states’                  such requirement for recurring
                                                  Rule to allow participation in CAIR to be relied on     current budget levels.78                                demonstrations.
                                                  as a BART alternative (the CAIR-better-than-BART
                                                  rule), 70 FR 39104 (July 6, 2005). The D.C. Circuit     C. Appropriateness of Continued                         D. Possible Changes in the Geographic
                                                  upheld the CAIR-better-than-BART rule, Utility Air      Reliance on Original CSAPR-Better-                      Distribution of Emissions
                                                  Regulatory Group v. EPA, 471 F.3d 1333 (D.C. Cir.       Than-BART Analysis
                                                  2006), but later found CAIR invalid and remanded                                                                  The commenter states that the EPA’s
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                                                  that rule to the Agency for replacement, North            The commenter states that the                         methodology for conducting the
                                                  Carolina v. EPA, 531 F.3d 896 (D.C. Cir. 2008),         sensitivity analysis is arbitrary because
                                                  modified on rehearing, 550 F.3d 1176 (D.C. Cir.
                                                                                                                                                                  sensitivity analysis as set forth in the
                                                  2008). The Agency then replaced CAIR with                                                                       proposal failed to adequately consider
                                                                                                            76 See supra notes 55 and 56.
                                                  CSAPR, 76 FR 48208, and replaced the CAIR-better-                                                               whether changes in a revised CSAPR
                                                                                                            77 See supra note 57.
                                                  than-BART rule with the CSAPR-better-than-BART                                                                  scenario regarding the geographic
                                                  rule, 77 FR 33642. In addition, following the             78 As discussed in section III.D above, both states

                                                  remand of CAIR, the Agency disapproved SIP              continue to participate in the CSAPR SO2 and
                                                                                                                                                                  distribution of emissions across states or
                                                  submissions for several states seeking to rely on       annual NOX programs through FIPs while Agency
                                                  CAIR as a BART alternative, e.g., 77 FR at 33647.       action on their SIP submittals is pending.               79 See   40 CFR 51.308(e)(3).



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                                                  45492            Federal Register / Vol. 82, No. 188 / Friday, September 29, 2017 / Rules and Regulations

                                                  within individual states might lead to                  the Agency has not sufficiently                          scenario, Texas EGUs were projected to
                                                  violations of the analytic criteria that                considered whether shifts in the                         emit 22,300 tons of SO2 in excess of the
                                                  the EPA relied on to find that CSAPR                    geographic distribution of emissions                     state’s SO2 budget.85 This would have
                                                  qualifies as a BART alternative. In                     might lead to violations of the two-                     been possible through the use of
                                                  particular, the commenter raises the                    pronged test—the EPA agrees that the                     allowances purchased from EGUs in
                                                  theoretical possibility that, in a revised              potential for such shifts was not                        other SO2 Group 2 states. Under a
                                                  CSAPR scenario where Texas EGUs no                      expressly addressed in the sensitivity                   revised CSAPR scenario where Texas
                                                  longer participate in CSAPR for SO2,                    analysis as proposed. For the final                      EGUs are no longer part of the CSAPR
                                                  some individual sources in other                        action, the EPA has therefore performed                  trading program, Texas EGUs would no
                                                  CSAPR states could buy additional                       further analysis to address this                         longer purchase the 22,300 allowances
                                                  allowances and increase their                           comment, focusing on the specific                        from the other states, and the EGUs in
                                                  emissions, and that such increases in                   circumstance identified by the                           those other states could potentially use
                                                  emissions in turn could cause adverse                   commenter—shifts associated with the                     those allowances to increase their own
                                                  visibility impacts in some individual                   removal of Texas EGUs from CSAPR for                     collective SO2 emissions. Much or all of
                                                  Class I areas (thereby violating the first              SO2—because the Agency agrees that                       the total potential increase in emissions
                                                  prong of the two-pronged test described                 this is the most significant change to                   in the other states would be projected to
                                                  above). More generally, the commenter                   CSAPR among the actions that have                        occur in Alabama and Georgia, because
                                                  asserts that without new modeling the                   been or are expected to be taken in                      in the original CSAPR scenario the
                                                  EPA ‘‘has no data’’ and has ‘‘simply                    response to the D.C. Circuit’s remand.82                 collective emissions from Kansas EGUs
                                                  assume[d]’’ that the two prongs of the                  The further analysis is based on state-                  were projected to already be at the
                                                  test would be satisfied under such a                    and unit-level data disaggregated from                   state’s ‘‘assurance level’’—the emissions
                                                  revised scenario.                                       the projections of electricity generation,               level above which EGUs trigger a
                                                     As an initial matter, the EPA disagrees              fuel usage, and emissions developed for                  CSAPR provision requiring the
                                                  with the commenter’s summary                            the base case, BART, and original                        surrender of three allowances instead of
                                                  characterization of the proposed                        CSAPR scenarios that were compared in                    one allowance per ton of emissions—
                                                  sensitivity analysis as not being                       the 2012 analytic demonstration.83                       and the collective emissions from
                                                  grounded in data. To the contrary, the                     Based on this additional analysis, the                Minnesota, Nebraska, and South
                                                  Agency’s proposed conclusions                           EPA finds that, in addition to the                       Carolina EGUs were projected to already
                                                  explicitly rely on data drawn from the                  projected SO2 emissions reduction of at                  be close to their states’ respective
                                                  modeling results in the record for the                  least 127,300 tons in Texas identified in                assurance levels.86 After accounting for
                                                  CSAPR-better-than-BART rule. The EPA                    the proposal,84 a revised CSAPR                          the potential 22,300-ton offsetting
                                                  explained in the proposal, first, how the               scenario without Texas in CSAPR for                      adjustment, the net regional SO2
                                                  data from the earlier rulemaking record                 SO2 could also reflect a projected                       reduction under the revised CSAPR
                                                  showed that a revised CSAPR scenario                    aggregated increase in SO2 emissions of                  scenario relative to the original CSAPR
                                                  would reflect a projected reduction in                  approximately 22,300 tons in the six                     scenario would be projected to be
                                                  Texas SO2 emissions of 127,300 tons (or                 other states in the CSAPR SO2 Group 2                    approximately 105,000 tons (or more)
                                                  more) 80 along with projected increases                 trading program (Alabama, Georgia,                       instead of 127,300 tons (or more) as
                                                  in Florida and Texas NOX emissions of                   Kansas, Minnesota, Nebraska, and South                   described in the proposed sensitivity
                                                  at most a few thousand tons and,                        Carolina). The reason for this                           analysis.87 For the reasons below, the
                                                  second, why it was logical to conclude                  adjustment is that in the original CSAPR                 EPA has considered both the projected
                                                  from these projected emissions changes                                                                           decrease in Texas SO2 emissions and
                                                  that, relative to the modeled BART and
                                                                                                             82 As summarized above, the Agency explained in       the projected aggregated increase in SO2
                                                                                                          the proposal that the removal of Florida, North
                                                  base case scenarios, the revised CSAPR                  Carolina, South Carolina, and Texas EGUs from               85 See ‘‘Projected Interstate Trading of CSAPR SO
                                                                                                                                                                                                                        2
                                                  scenario would have shown even larger                   CSAPR for either seasonal or annual NOX, as              Group 2 Allowances in the Original CSAPR
                                                  visibility improvements than the                        applicable, would not have caused sufficient             Scenario,’’ available in the docket for this action.
                                                                                                          changes in modeled NOX emissions in a revised
                                                  original CSAPR scenario.81 The                          CSAPR scenario to materially alter the visibility
                                                                                                                                                                      86 Id.

                                                  commenter provides no data of any                       impacts comparison, in some instances because the
                                                                                                                                                                      87 It is possible that if the original CSAPR

                                                  kind, let alone data that might challenge               EGUs would remain subject to another CSAPR NOX           scenario that includes Texas in CSAPR for SO2 had
                                                                                                          program and in some instances because of the small       been remodeled to include the 50,500 increase in
                                                  the data presented in the proposal.                                                                              the Texas SO2 budget described in the proposal and
                                                                                                          magnitudes of the differences in projected total
                                                     Turning to the commenter’s more                      NOX emissions from the EGUs in each of those
                                                                                                                                                                   in footnote 80, Texas EGUs would have been
                                                  specific methodological criticism—that                                                                           projected to purchase either more or less than
                                                                                                          states between the original CSAPR scenario and the
                                                                                                                                                                   22,300 allowances from EGUs in other CSAPR SO2
                                                                                                          relevant other modeled scenarios, combined with
                                                                                                                                                                   Group 2 states, and that a revised CSAPR scenario
                                                    80 The 127,300-ton amount was described in the        the dominance of sulfate impacts compared to
                                                                                                                                                                   in which Texas was removed from CSAPR for SO2
                                                  proposal as the minimum reduction in projected          nitrate impacts on visibility (especially in the
                                                                                                                                                                   would therefore have shown the other Group 2
                                                  Texas SO2 emissions because it did not reflect a        South). The EPA believes these same factors
                                                                                                                                                                   states increasing their SO2 emissions by this
                                                  50,500-ton increase in the Texas SO2 budget that        likewise indicate that the visibility impacts of any
                                                                                                                                                                   different amount. Regardless of the amount or
                                                  occurred after the original CSAPR scenario was          potential shifts in the geographic distribution of       direction of any modeled change in Texas EGUs’
                                                  modeled. If that budget increase had been reflected     NOX emissions related to removal of these states         CSAPR allowance purchases, that change would
                                                  in the original CSAPR scenario, modeled Texas           from the CSAPR NOX programs would not be                 generally have been matched by an equal and
                                                  EGU SO2 emissions in that scenario would likely         material to either prong of the two-pronged              opposite change in Texas EGUs’ projected
                                                  have been higher, potentially by the full 50,500-ton    visibility impacts comparison.                           emissions under CSAPR, with the result that the
                                                  amount. The CSAPR budget increase would have               83 The state- and plant-level data are derived from
                                                                                                                                                                   overall net projected reduction in emissions caused
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                                                  had no effect on Texas EGUs’ modeled SO2                the unit-level data in three spreadsheets included       by removing Texas from CSAPR for SO2 would
                                                  emissions under BART. As a consequence, the             in the final CSAPR-better-than-BART rulemaking           continue to be at least 105,000 tons. The maximum
                                                  127,300-ton minimum estimate of the reduction in        record and available in the docket for this action:      amount of CSAPR SO2 allowances that Texas could
                                                  projected Texas SO2 emissions caused by removing        IPM Parsed File for CSAPR Base Case Scenario 2014        purchase from other states and use in a given year
                                                  Texas EGUs from CSAPR for SO2, which are                (EPA–HQ–OAR–2011–0729–0004), IPM Parsed File             without incurring 3-for-1 allowance surrender
                                                  computed as the difference between Texas EGUs’          for National BART Scenario 2014 (EPA–HQ–OAR–             requirements is approximately 53,000 tons, which
                                                  collective emissions in the original CSAPR scenario     2011–0729–0008), and IPM Parsed File for CSAPR–          is the amount of Texas’ SO2 variability limit—the
                                                  and the BART scenario, may be understated by as         BART Scenario 2014 (EPA–HQ–OAR–2011–0729–                difference between the state’s budget and its
                                                  much as 50,500 tons.                                    0006).                                                   assurance level—under the CSAPR regulations. See
                                                    81 81 FR at 78962–64.                                    84 See supra note 74.                                 40 CFR 97.710(b)(7).



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                                                                   Federal Register / Vol. 82, No. 188 / Friday, September 29, 2017 / Rules and Regulations                                                   45493

                                                  emissions in the other states and has                      With respect to the possibility of                    the original CSAPR and base case
                                                  concluded that the two-pronged CSAPR-                   changes in electricity demand in other                   scenarios for all coal-fired EGUs in the
                                                  better-than-BART test described above                   states, record data show that, relative to               seven states in the CSAPR SO2 Group 2
                                                  would continue to be satisfied.                         the original CSAPR scenario, aggregated                  trading program. The results of the
                                                     As summarized above, the first prong                 2014 generation from fossil-fired Texas                  comparison clearly indicate that the
                                                  of the two-pronged test requires that                   EGUs was projected to increase by 0.2%                   general principle applies in this
                                                  visibility conditions must not decline in               in the BART scenario (which is used                      instance: 77 Units were projected to
                                                  any Class I area. In the 2012 analytic                  here as a proxy representing the                         reduce their SO2 emissions by 1,000
                                                  demonstration, the EPA evaluated this                   operating behavior of Texas EGUs in a                    tons or more (in amounts up to 57,000
                                                  prong by comparing visibility impacts at                revised CSAPR scenario), indicating that                 tons), 106 units were projected to
                                                  each affected Class I area under the                    removal of Texas EGUs from CSAPR for                     essentially maintain their SO2 emissions
                                                  original CSAPR scenario and the base                    SO2 and implementation of SO2 BART                       (increasing or decreasing by between 0
                                                  case scenario. The situation identified                 would not be projected to result in an                   and 1,000 tons), and 2 units were
                                                  by the commenter in which emissions                     increase in emissions outside Texas                      projected to increase their SO2
                                                  under a revised CSAPR scenario might                    caused by a shift in generation from                     emissions by approximately 1,100 tons
                                                  rise at some individual EGUs                            Texas to other states.89                                 each.91 A similar comparison at the state
                                                  sufficiently to cause a decline in                         With respect to changes in relative                   level shows that collective SO2
                                                  visibility at some individual Class I area              fuel prices in other states, record data                 emissions from the sets of EGUs in each
                                                  relative to visibility conditions in the                show that, relative to the original                      of the seven states were also projected
                                                  base case scenario—that is, without                     CSAPR scenario, in the BART scenario                     to decrease from the base case scenario
                                                  either CSAPR or BART—would be a                         Texas EGUs were projected to decrease                    to the original CSAPR scenario (in
                                                  very unusual event and likely can be                    their use of subbituminous coal by 68                    amounts ranging from 1,900 tons for
                                                  ruled out as impossible, or nearly so, in               trillion Btus (TBtu), increase their use of              Nebraska to 248,800 tons for
                                                  a scenario such as the revised CSAPR                    lignite by 66 TBtu, and increase their                   Alabama).92 In combination with the
                                                  scenario being considered. Under the                    use of other fossil fuels (predominantly                 data above showing that removal of
                                                  base case scenario, EGUs incur no cost                  natural gas) by 11 TBtu.90 The changes                   Texas from CSAPR for SO2 would not be
                                                  at all under CSAPR for emitting a ton of                in projected Texas usage of                              expected to cause changes in demand
                                                  SO2. In contrast, under either the                      subbituminous coal and natural gas are                   for generation or relative fuel prices in
                                                  original CSAPR scenario or a revised                    less than 1% of the projected total                      other states, the EPA believes that these
                                                  CSAPR scenario, EGUs would incur                        industry usage of those fuels nationwide                 data on how EGUs were projected to
                                                  some cost per ton of SO2 emissions                      under the original CSAPR scenario,                       comply with CSAPR in the original
                                                  under CSAPR, and where that new cost                    indicating that there is no reason to                    CSAPR scenario indicate that in a
                                                  is the principal change from the base                   expect material impacts on prices or                     revised CSAPR scenario where Texas is
                                                  case scenario, EGUs that emit SO2                       usage of those fuels in other states.                    removed from CSAPR for SO2 and
                                                  would generally be projected to either                  Unlike subbituminous coal and natural                    22,300 additional allowances (or up to
                                                  decrease or maintain their emissions                    gas, lignite is an inherently local fuel                 53,000 allowances, as noted earlier 93)
                                                  relative to the base case scenario where                that is consumed near the point of                       therefore become available to the EGUs
                                                  that cost was not present. If in a revised              extraction because the fuel’s low energy                 in the other SO2 Group 2 states, few if
                                                  CSAPR scenario, allowances are more                     content per unit of weight makes                         any EGUs would respond to the
                                                  plentiful and the cost incurred per ton                 shipment over long distances
                                                                                                                                                                   availability of the additional allowances
                                                  of SO2 emissions therefore is less than                 uneconomic. Thus, although the
                                                                                                                                                                   by increasing their emissions materially
                                                  the cost per ton under the original                     increase in Texas EGUs’ projected usage
                                                                                                                                                                   above their emissions in the base case
                                                  CSAPR scenario, some EGUs that emit                     of lignite is fairly large (8.2% of
                                                                                                                                                                   scenario. Further, even if some EGUs
                                                  SO2 would be projected to reduce their                  projected national usage of lignite under
                                                                                                                                                                   did increase their emissions above their
                                                  SO2 emissions by a smaller amount than                  the original CSAPR scenario), any
                                                                                                                                                                   emissions in the base case scenario,
                                                  in the original CSAPR scenario, but they                resulting increase in the local prices of
                                                                                                                                                                   because of the regional nature of sulfate
                                                  generally would not be projected to                     lignite would not be expected to affect
                                                                                                                                                                   formation from SO2 emissions and the
                                                  significantly increase their emissions                  the mix of fuels used in other states.
                                                                                                             For further confirmation of the                       very large decreases in SO2 emissions
                                                  relative to the base case scenario. An
                                                                                                          applicability here of the general                        across the broader region, the EPA
                                                  exception to this general principle could
                                                                                                          principle discussed above—namely, that                   believes that any such local increase
                                                  occur if some other factor influencing
                                                                                                          in a modeled CSAPR scenario, EGUs                        would be unlikely to cause localized
                                                  EGUs’ operating decisions, such as
                                                                                                          that emit SO2 would generally be                         visibility degradation in any Class I area
                                                  electricity demand or relative fuel
                                                                                                          projected to either decrease or maintain                 near a CSAPR state affected by the
                                                  prices, also changed. The EPA therefore
                                                                                                          their emissions and not to increase their                removal of Texas from CSAPR for SO2.
                                                  considered whether the removal of
                                                  Texas from CSAPR could have been                        emissions relative to the base case                      In consequence, the Agency finds it
                                                  projected to result in any material                     scenario—the EPA compared the                            reasonable to conclude that in such a
                                                  change in demand for generation from                    projected unit-level SO2 emissions in                    revised CSAPR scenario, no such Class
                                                  other states or relative fuel prices in                                                                          I areas would experience declines in
                                                  other states in a revised CSAPR scenario                   89 See ‘‘Projected Changes in Texas Emissions,        visibility conditions relative to the base
                                                  compared to the original CSAPR                          Fossil Generation, and Fuel Usage Between the Base       case scenario.
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                                                  scenario.88
                                                                                                          Case, BART, and Original CSAPR Scenarios,’’                 The second prong of the two-pronged
                                                                                                          available in the docket for this action. Because there   test requires the average projected
                                                                                                          is little difference in NOX emissions from Texas
                                                    88 Although the analysis focuses on other CSAPR       EGUs between the original CSAPR scenario, the
                                                                                                                                                                     91 See ‘‘Projected Changes in Unit-Level
                                                  states, consistent with the concerns raised by the      BART scenario, and the base case scenario, id., the
                                                  commenter, the EPA notes that absent changes in         EPA considers the BART scenario a reasonable             Emissions Between the Base Case and Original
                                                  generation demand or relative fuel prices, removal      emissions proxy for a revised CSAPR scenario in          CSAPR Scenarios,’’ available in the docket for this
                                                  of Texas from CSAPR would also be expected not          which Texas EGUs would be subject to BART for            action.
                                                  to affect the operating decisions of EGUs in non-       SO2 but not for NOX.                                       92 See id.

                                                  CSAPR states.                                              90 See id.                                              93 See supra note 87.




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                                                  45494            Federal Register / Vol. 82, No. 188 / Friday, September 29, 2017 / Rules and Regulations

                                                  visibility improvement across all                       regarding the original demonstration                  headings ‘‘Annual emissions’’ and
                                                  affected Class I areas to be greater under              arbitrary. In support of this claim, the              ‘‘Ozone season emissions’’ to § 52.38(a)
                                                  the BART alternative than under BART.                   commenter incorporates by reference all               and (b), respectively, and by amending
                                                  In the proposal, the EPA proposed to                    criticisms of the original analytic                   the wording of the regulatory text at
                                                  conclude that this prong would be                       demonstration contained in the                        §§ 52.38(b)(2)(i) and 52.39(b) to parallel
                                                  easily satisfied under the revised                      comments submitted by the commenter                   the wording of the newly amended
                                                  CSAPR scenario because Texas EGUs                       in the original CSAPR-better-than-BART                regulatory text at §§ 52.38(a)(2)(i) and
                                                  would be modeled in the revised                         rulemaking as well as all criticisms                  52.39(c)(1). These editorial clarifications
                                                  CSAPR scenario as subject to SO2 BART                   contained in the commenter’s brief in                 do not alter any existing regulatory
                                                  instead of being subject to CSAPR for                   the pending litigation challenging the                requirements.
                                                  SO2, and the record data showed that                    CSAPR-better-than-BART rule.                             Finally, the EPA is correcting the
                                                  Texas EGUs’ projected SO2 emissions                        The EPA rejects these comments as
                                                                                                                                                                CSAPR regulations applicable to South
                                                  would be at least 127,300 tons lower                    both improperly raised and outside the
                                                                                                                                                                Carolina EGUs by amending the
                                                  under BART than under CSAPR. As                         scope of this proceeding. The EPA
                                                                                                                                                                regulatory text at § 52.2141(b) to
                                                  discussed above, based on further                       appreciates the value of public input in
                                                                                                                                                                reference CSAPR SO2 Group 2
                                                  analysis the EPA concludes that the                     the rulemaking process and seeks to
                                                                                                          fulfill its legal obligation to consider              allowances and 40 CFR part 97, subpart
                                                  decrease in projected Texas SO2
                                                                                                          and respond to all substantive                        DDDDD instead of CSAPR SO2 Group 1
                                                  emissions could potentially be partially
                                                                                                          comments that are ‘‘raised with                       allowances and 40 CFR part 97, subpart
                                                  offset by an increase in projected SO2
                                                                                                          reasonable specificity,’’ 95 but catch-all            CCCCC. The corrections make the text at
                                                  emissions in other CSAPR SO2 Group 2
                                                                                                          references to whatever statements may                 § 52.2141(b) consistent with the existing
                                                  states, most likely Alabama or Georgia.
                                                                                                          have been made in another proceeding                  text at § 52.2141(a), and the two
                                                  The EPA believes that such a revised
                                                                                                          do not meet this standard. Moreover,                  paragraphs together now correctly
                                                  CSAPR scenario would continue to
                                                                                                          even if they had been properly raised,                reflect the existing regulatory
                                                  show greater average visibility
                                                  improvement than the BART scenario                      comments concerning the legal validity                requirements applicable to South
                                                  (and greater than the original CSAPR                    of the original 2012 analytic                         Carolina EGUs as already set forth at
                                                  scenario), again easily passing the                     demonstration are beyond the scope of                 § 52.39(c) and (k).
                                                  second prong of the two-pronged test.                   this rulemaking, which concerns only                  VI. Statutory and Executive Order
                                                  Any reduction in visibility                             the sensitivity analysis addressing the               Reviews
                                                  improvement in Class I areas near                       effect on the 2012 analytic
                                                  Alabama, Georgia, or the other Group 2                  demonstration of changes in CSAPR’s                     Additional information about these
                                                  states relative to the original CSAPR                   geographic scope resulting from the D.C.              statutes and Executive Orders can be
                                                  scenario would be more than offset by                   Circuit’s remand (as well as the                      found at http://www2.epa.gov/laws-
                                                  greater visibility improvement in Class                 withdrawal of Texas CSAPR FIP                         regulations/laws-and-executive-orders.
                                                  I areas near Texas.94 Due to the regional               requirements for SO2 and annual NOX                   A. Executive Order 12866: Regulatory
                                                  nature of sulfate particulate matter                    and the finding as to Texas’ remaining
                                                                                                                                                                Planning and Review, and Executive
                                                  formation, it is highly likely that, like               transport obligation under CAA section
                                                                                                                                                                Order 13563: Improving Regulation and
                                                  the original CSAPR scenario, the revised                110(a)(2)(D)(i)(I) regarding the 1997
                                                                                                                                                                Regulatory Review
                                                  CSAPR scenario would show greater                       annual PM2.5 NAAQS). Arguments
                                                  visibility improvement on average                       concerning the original 2012 analytic                   This action is not a significant
                                                  across all Class I areas than the BART                  demonstration should be, and have                     regulatory action and therefore was not
                                                  scenario. The commenters did not                        been, raised in the original CSAPR-                   submitted to the Office of Management
                                                  present any information to indicate                     better-than-BART rulemaking and in the                and Budget (OMB) for review.
                                                  otherwise, and the EPA is not aware of                  pending litigation over that rule.
                                                  any such information.                                                                                         B. Executive Order 13771: Reducing
                                                                                                          V. Description of Amendments to                       Regulations and Controlling Regulatory
                                                  E. Validity of 2012 Analytic                            Regulatory Text                                       Costs
                                                  Demonstration Prior to CSAPR Changes                       In order to implement the withdrawal
                                                                                                          of the FIP provisions requiring Texas                   This action is not expected to be an
                                                    Finally, the commenter asserts that
                                                                                                          EGUs to participate in the CSAPR NOX                  Executive Order 13771 regulatory action
                                                  regardless of the character of the
                                                                                                          Annual Trading Program and the                        because this action is not significant
                                                  sensitivity analysis itself, the original
                                                                                                          CSAPR SO2 Group 2 Trading Program                     under Executive Order 12866.
                                                  2012 CSAPR-better-than-BART analytic
                                                  demonstration was arbitrary, rendering                  with regard to emissions occurring in                 C. Paperwork Reduction Act
                                                  any sensitivity analysis performed                      Phase 2 of those programs, the EPA is
                                                                                                          amending the regulatory text at 40 CFR                  This action does not impose any new
                                                    94 The  CSAPR-better-than-BART record shows           52.38(a)(2), 52.39(c), 52.2283(c), and                information collection burden under the
                                                  that the Class I areas most impacted by Texas were      52.2284(c) to provide that Texas EGUs                 Paperwork Reduction Act. The OMB has
                                                  projected to have greater modeled visibility            are subject to requirements under these               previously approved the information
                                                  improvement in the BART scenario (on the 20%
                                                  best days) than in the CSAPR scenario. This             two programs with regard to emissions                 collection activities contained in the
                                                  indicates that there would have been additional         occurring in 2015 and 2016 only.                      existing regulations and has assigned
                                                  visibility improvement in a revised CSAPR scenario      Conforming amendments to cross-                       OMB control number 2060–0667. The
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                                                  in which Texas is not in CSAPR for SO2 and is           references are being made at                          withdrawal of the FIP provisions in this
                                                  therefore modeled at BART SO2 levels. Note that
                                                  the average visibility improvements across all          § 52.38(a)(3), (a)(4), (a)(5), (a)(6), and            action will eliminate the obligations of
                                                  affected Class I areas as computed in the original      (a)(8)(iii) and § 52.39(g), (h), (i), (j), and        Texas sources to comply with the
                                                  CSAPR and BART scenarios are much closer on the         (m)(3).                                               existing monitoring, recordkeeping, and
                                                  20% best days than on the 20% worst days.                  The EPA is also clarifying the CSAPR               reporting requirements under the
                                                  Therefore, in determining whether the second
                                                  prong of the two-pronged test will be passed under      regulations by adding the introductory                CSAPR SO2 Group 2 Trading Program
                                                  a revised CSAPR scenario, the modeled results on                                                              and the CSAPR NOX Annual Trading
                                                  the 20% best days are particularly important.             95 CAA   section 307(d)(7)(B).                      Program.


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                                                                   Federal Register / Vol. 82, No. 188 / Friday, September 29, 2017 / Rules and Regulations                                        45495

                                                  D. Regulatory Flexibility Act                           while developing CSAPR. A summary of                  M. Judicial Review and Determinations
                                                     I certify that this action will not have             that consultation is provided in the                  Under CAA Section 307(b)(1) and (d)
                                                  a significant economic impact on a                      preamble for CSAPR, 76 FR 48208,                         CAA section 307(b)(1) indicates
                                                  substantial number of small entities                    48346 (August 8, 2011).                               which federal appellate courts have
                                                  under the Regulatory Flexibility Act. In                H. Executive Order 13045: Protection of               venue for petitions of review of final
                                                  making this determination, the impact                                                                         actions by the EPA. This section
                                                                                                          Children From Environmental Health
                                                  of concern is any significant adverse                                                                         provides, in part, that petitions for
                                                                                                          and Safety Risks
                                                  economic impact on small entities. An                                                                         review must be filed in the D.C. Circuit
                                                  agency may certify that a rule will not                   The EPA interprets Executive Order                  Court of Appeals if (i) the agency action
                                                  have a significant economic impact on                   13045 as applying only to those                       consists of ‘‘nationally applicable
                                                  a substantial number of small entities if               regulatory actions that concern                       regulations promulgated, or final action
                                                  the rule relieves regulatory burden, has                environmental health or safety risks that             taken, by the Administrator,’’ or (ii)
                                                  no net burden, or otherwise has a                       the EPA has reason to believe may                     such action is locally or regionally
                                                  positive economic effect on the small                                                                         applicable, if ‘‘such action is based on
                                                                                                          disproportionately affect children, per
                                                  entities subject to the rule. This action                                                                     a determination of nationwide scope or
                                                  withdraws existing regulatory                           the definition of ‘‘covered regulatory
                                                                                                          action’’ in section 2–202 of the                      effect and if in taking such action the
                                                  requirements for some entities and does                                                                       Administrator finds and publishes that
                                                  not impose new requirements on any                      Executive Order. This action is not
                                                                                                                                                                such action is based on such a
                                                  entity. We have therefore concluded                     subject to Executive Order 13045
                                                                                                                                                                determination.’’ This final action is
                                                  that this action will either relieve or                 because it simply eliminates certain                  ‘‘nationally applicable.’’ In addition, the
                                                  have no net regulatory burden for all                   federal regulatory requirements that the              EPA finds that all aspects of this action
                                                  directly regulated small entities.                      D.C. Circuit has held invalid.                        are based on a determination of
                                                  E. Unfunded Mandates Reform Act                         I. Executive Order 13211: Actions That                ‘‘nationwide scope and effect’’ within
                                                                                                          Significantly Affect Energy Supply,                   the meaning of section 307(b)(1).
                                                     This action does not contain any                                                                              First, the EPA’s withdrawal of FIP
                                                  unfunded mandate as described in the                    Distribution, or Use
                                                                                                                                                                requirements under the CSAPR program
                                                  Unfunded Mandates Reform Act, 2                                                                               for Texas is being undertaken in
                                                                                                            This action is not subject to Executive
                                                  U.S.C. 1531–1538, and does not                                                                                response to a remand by the D.C. Circuit
                                                                                                          Order 13211, because it is not a
                                                  significantly or uniquely affect small                                                                        in litigation that challenged numerous
                                                  governments. The action imposes no                      significant regulatory action under
                                                                                                          Executive Order 12866.                                aspects of CSAPR with implications for
                                                  enforceable duty on any state, local, or                                                                      multiple states and resulted in the
                                                  tribal governments or the private sector.               J. National Technology Transfer                       remand of fifteen budgets for thirteen
                                                  This action simply eliminates certain                   Advancement Act                                       states. Retaining review in the D.C.
                                                  federal regulatory requirements that the
                                                                                                                                                                Circuit is appropriate and avoids the
                                                  D.C. Circuit has held invalid.                            This rulemaking does not involve
                                                                                                                                                                potential that another court is forced to
                                                                                                          technical standards.                                  interpret the remand order of a sister
                                                  F. Executive Order 13132: Federalism
                                                    This action does not have federalism                  K. Executive Order 12898: Federal                     circuit. Also, the finding that, after the
                                                  implications. It will not have substantial              Actions To Address Environmental                      FIP withdrawal, Texas has no remaining
                                                  direct effects on the states, on the                    Justice in Minority Populations and                   obligation to address interstate transport
                                                  relationship between the national                       Low-Income Populations                                with respect to the 1997 annual PM2.5
                                                  government and the states, or on the                                                                          NAAQS is based on a common core of
                                                  distribution of power and                                 The EPA believes that this action is                factual findings and analyses
                                                  responsibilities among the various                      not subject to Executive Order 12898                  concerning the transport of pollutants
                                                  levels of government. This action                       because it does not establish an                      between the different states subject to
                                                  simply eliminates certain federal                       environmental health or safety standard.              CSAPR, which is a nationally applicable
                                                  regulatory requirements that the D.C.                   This action simply eliminates certain                 program. Further, this action is based on
                                                  Circuit has held invalid.                               federal regulatory requirements that the              a determination that modifies the scope
                                                                                                          D.C. Circuit has held invalid. Consistent             and effect of CSAPR; thus, any judicial
                                                  G. Executive Order 13175: Consultation                  with Executive Order 12898 and the                    review of this action will necessarily
                                                  and Coordination With Indian Tribal                                                                           implicate the national-level policies,
                                                                                                          EPA’s environmental justice policies,
                                                  Governments                                                                                                   technical analyses, or interpretations
                                                                                                          the EPA considered effects on low-
                                                    This action does not have tribal                      income populations, minority                          that undergird this nationwide program.
                                                  implications as specified in Executive                  populations, and indigenous peoples                      Second, in express consideration of
                                                  Order 13175. It will not have substantial               while developing CSAPR. The process                   the effect of the withdrawal of Texas FIP
                                                  direct effects on tribal governments, on                and results of that consideration are                 requirements accomplished through this
                                                  the relationship between the federal                    described in the preamble for CSAPR,                  final action, the EPA is affirming the
                                                  government and Indian tribes, or on the                 76 FR 48208, 48347–52 (August 8,                      continued validity of 40 CFR
                                                  distribution of power and                                                                                     51.308(e)(4), a regulatory provision
                                                                                                          2011).
                                                  responsibilities between the federal                                                                          available to each of the 27 States whose
                                                  government and Indian tribes. This                      L. Congressional Review Act                           sources currently participate in one or
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                                                  action simply eliminates certain federal                                                                      more CSAPR trading programs. This
                                                  regulatory requirements that the D.C.                      This action is subject to the                      determination affects the rights and
                                                  Circuit has held invalid. Thus,                         Congressional Review Act, and the EPA                 interests of regulated parties and other
                                                  Executive Order 13175 does not apply                    will submit a rule report to each House               stakeholders throughout the eastern
                                                  to this action. Consistent with the EPA                 of the Congress and to the Comptroller                United States relying on or otherwise
                                                  Policy on Consultation and                              General of the United States. This action             affected by that regulatory provision.
                                                  Coordination with Indian Tribes, the                    is not a ‘‘major rule’’ as defined by 5                  For these reasons, this final action is
                                                  EPA consulted with tribal officials                     U.S.C. 804(2).                                        nationally applicable and, in addition,


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                                                  45496            Federal Register / Vol. 82, No. 188 / Friday, September 29, 2017 / Rules and Regulations

                                                  the Administrator finds that this final                 PART 52—APPROVAL AND                                  emissions occurring in 2015 and each
                                                  action is based on a determination of                   PROMULGATION OF                                       subsequent year’’;
                                                  nationwide scope and effect for                         IMPLEMENTATION PLANS                                  ■ b. Revising paragraph (c);
                                                  purposes of section 307(b)(1). Thus,                                                                          ■ c. In paragraph (g) introductory text,
                                                  pursuant to section 307(b) any petitions                ■ 1. The authority citation for part 52               removing the text ‘‘(c)’’ and in its place
                                                  for review of this action must be filed                 continues to read as follows:                         adding the text ‘‘(c)(1) or (2)’’;
                                                                                                              Authority: 42 U.S.C. 7401 et seq.                 ■ d. In paragraph (h) introductory text,
                                                  in the D.C. Circuit within 60 days from
                                                  the date of publication of this action in                                                                     removing the text ‘‘(c)’’ and in its place
                                                  the Federal Register.                                   Subpart A—General Provisions                          adding the text ‘‘(c)(1)’’;
                                                                                                                                                                ■ e. In paragraphs (i) introductory text
                                                     In addition, pursuant to CAA sections                ■  2. Section 52.38 is amended by:                    and (j), removing the text ‘‘(c)’’ two
                                                  307(d)(1)(B), 307(d)(1)(J), and                         ■  a. Adding a paragraph (a) heading;                 times and in its place adding the text
                                                  307(d)(1)(V), the Administrator                         ■  b. Revising paragraph (a)(2);                      ‘‘(c)(1)’’; and
                                                  determines that this action is subject to               ■  c. In paragraph (a)(3) introductory                ■ f. In paragraph (m)(3), removing the
                                                  the provisions of section 307(d). CAA                   text, removing the text ‘‘(a)(2)’’ and in             text ‘‘(c)’’ and in its place adding the
                                                  section 307(d)(1)(B) provides that                      its place adding the text ‘‘(a)(2)(i) or              text ‘‘(c)(1)’’.
                                                  section 307(d) applies to, among other                  (ii)’’;                                                  The revision reads as follows:
                                                  things, ‘‘the promulgation or revision of               ■ d. In paragraph (a)(4) introductory
                                                                                                          text, removing the text ‘‘(a)(2)’’ and in             § 52.39 What are the requirements of the
                                                  an implementation plan by the                                                                                 Federal Implementation Plans (FIPs) for the
                                                  Administrator under [CAA section                        its place adding the text ‘‘(a)(2)(i)’’;              Cross-State Air Pollution Rule (CSAPR)
                                                  110(c)].’’ 42 U.S.C. 7607(d)(1)(B). Under               ■ e. In paragraphs (a)(5) introductory
                                                                                                                                                                relating to emissions of sulfur dioxide?
                                                  section 307(d)(1)(J), the provisions of                 text and (a)(6), removing the text
                                                                                                          ‘‘(a)(2)’’ and in its place adding the text           *     *     *     *    *
                                                  section 307(d) apply to the                                                                                     (c)(1) The provisions of subpart
                                                                                                          ‘‘(a)(2)(i)’’, and removing the text ‘‘(a)(1)
                                                  ‘‘promulgation or revision of regulations                                                                     DDDDD of part 97 of this chapter apply
                                                                                                          through (4)’’ and in its place adding the
                                                  . . . relating to . . . protection of                                                                         to sources in each of the following
                                                                                                          text ‘‘(a)(1), (a)(2)(i), and (a)(3) and (4)’’;
                                                  visibility.’’ 42 U.S.C. 7607(d)(1)(J).                  ■ f. In paragraph (a)(8)(iii), removing the
                                                                                                                                                                States and Indian country located
                                                  Under section 307(d)(1)(V), the                         text ‘‘(a)(1) through (4)’’ and in its place          within the borders of such States with
                                                  provisions of section 307(d) also apply                 adding the text ‘‘(a)(1), (a)(2)(i), and              regard to emissions occurring in 2015
                                                  to ‘‘such other actions as the                          (a)(3) and (4)’’;                                     and each subsequent year: Alabama,
                                                  Administrator may determine.’’ 42                       ■ g. Adding a paragraph (b) heading;
                                                                                                                                                                Georgia, Kansas, Minnesota, Nebraska,
                                                  U.S.C. 7607(d)(1)(V). The agency has                    and                                                   and South Carolina.
                                                  complied with the procedural                            ■ h. In paragraph (b)(2)(i), after the word
                                                                                                                                                                  (2) The provisions of subpart DDDDD
                                                  requirements of CAA section 307(d)                      ‘‘emissions’’ adding the word                         of part 97 of this chapter apply to
                                                  during the course of this rulemaking.                   ‘‘occurring’’.                                        sources in each of the following States
                                                                                                             The additions and revisions read as                and Indian country located within the
                                                     CAA section 307(b)(1) also provides                                                                        borders of such States with regard to
                                                  that filing a petition for reconsideration              follows:
                                                                                                                                                                emissions occurring in 2015 and 2016
                                                  by the Administrator of this rule does                  § 52.38 What are the requirements of the              only: Texas.
                                                  not affect the finality of the rule for the             Federal Implementation Plans (FIPs) for the           *     *     *     *    *
                                                  purposes of judicial review, does not                   Cross-State Air Pollution Rule (CSAPR)
                                                  extend the time within which a petition                 relating to emissions of nitrogen oxides?             Subpart PP—South Carolina
                                                  for judicial review may be filed, and                     (a) Annual emissions. * * *
                                                  does not postpone the effectiveness of                    (2)(i) The provisions of subpart                    § 52.2141   [Amended]
                                                  the rule. Under CAA section 307(b)(2),                  AAAAA of part 97 of this chapter apply                ■  4. Section 52.2141, paragraph (b) is
                                                  the requirements established by this                    to sources in each of the following                   amended by removing the text ‘‘Group
                                                  rule may not be challenged separately in                States and Indian country located                     1’’ two times and in its place adding the
                                                  any civil or criminal proceedings                       within the borders of such States with                text ‘‘Group 2’’, and removing the text
                                                  brought by the EPA to enforce these                     regard to emissions occurring in 2015                 ‘‘CCCCC’’ two times and in its place
                                                  requirements.                                           and each subsequent year: Alabama,                    adding the text ‘‘DDDDD’’.
                                                                                                          Georgia, Illinois, Indiana, Iowa, Kansas,
                                                  List of Subjects in 40 CFR Part 52                      Kentucky, Maryland, Michigan,                         Subpart SS—Texas
                                                                                                          Minnesota, Missouri, Nebraska, New
                                                    Environmental protection,                             Jersey, New York, North Carolina, Ohio,               ■ 5. Section 52.2283 is amended by
                                                  Administrative practice and procedure,                  Pennsylvania, South Carolina,                         revising paragraph (c)(1) and removing
                                                  Air pollution control, Incorporation by                 Tennessee, Virginia, West Virginia, and               and reserving paragraph (c)(2).
                                                  reference, Intergovernmental relations,                 Wisconsin.                                              The revision reads as follows:
                                                  Nitrogen oxides, Ozone, Particulate                       (ii) The provisions of subpart AAAAA
                                                  matter, Regional haze, Reporting and                                                                          § 52.2283 Interstate pollutant transport
                                                                                                          of part 97 of this chapter apply to                   provisions; What are the FIP requirements
                                                  recordkeeping requirements, Sulfur                      sources in each of the following States               for decreases in emissions of nitrogen
                                                  dioxide.                                                and Indian country located within the                 oxides?
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                                                    Dated: September 21, 2017.                            borders of such States with regard to                 *     *     *    *     *
                                                  E. Scott Pruitt,                                        emissions occurring in 2015 and 2016                    (c)(1) The owner and operator of each
                                                                                                          only: Texas.                                          source and each unit located in the State
                                                  Administrator.
                                                                                                          *      *    *     *     *                             of Texas and Indian country within the
                                                    For the reasons stated in the                           (b) Ozone season emissions. * * *                   borders of the State and for which
                                                  preamble, part 52 of chapter I of title 40              ■ 3. Section 52.39 is amended by:                     requirements are set forth under the
                                                  of the Code of Federal Regulations is                   ■ a. In paragraph (b), before the colon,              CSAPR NOX Annual Trading Program in
                                                  amended as follows:                                     adding the text ‘‘with regard to                      subpart AAAAA of part 97 of this


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                                                                   Federal Register / Vol. 82, No. 188 / Friday, September 29, 2017 / Rules and Regulations                                        45497

                                                  chapter must comply with such                           DATES:  This direct final rule will be                significant deterioration of air quality
                                                  requirements with regard to emissions                   effective November 28, 2017, without                  (prong 3), and (D)(ii), (E) through (H),
                                                  occurring in 2015 and 2016.                             further notice, unless EPA receives                   and (J) through (M). A Technical
                                                  *     *    *     *     *                                adverse comment by October 30, 2017.                  Support Document (TSD) is included as
                                                  ■ 6. Section 52.2284 is amended by
                                                                                                          If EPA receives adverse comment, we                   part of the docket to discuss the details
                                                                                                          will publish a timely withdrawal of the               of this action, including analysis of how
                                                  revising paragraph (c)(1) and removing
                                                                                                          direct final rule in the Federal Register             the SIP meets the applicable 110
                                                  and reserving paragraph (c)(2).
                                                                                                          informing the public that the rule will               requirements for infrastructure SIPs.
                                                    The revision reads as follows:
                                                                                                          not take effect.                                      II. Have the requirements for approval
                                                  § 52.2284 Interstate pollutant transport                ADDRESSES: Submit your comments,                      of a SIP revision been met?
                                                  provisions; What are the FIP requirements               identified by Docket ID No. EPA–R07–
                                                  for decreases in emissions of sulfur                                                                             The state submission has met the
                                                                                                          OAR–2017–0267, to https://
                                                  dioxide?                                                                                                      public notice requirements for SIP
                                                                                                          www.regulations.gov. Follow the online
                                                  *     *     *    *     *                                                                                      submissions in accordance with 40 CFR
                                                                                                          instructions for submitting comments.
                                                    (c)(1) The owner and operator of each                                                                       51.102. The state initiated public
                                                                                                          Once submitted, comments cannot be
                                                  source and each unit located in the State                                                                     comment from April 6, 2013, to May 8,
                                                                                                          edited or removed from Regulations.gov.
                                                  of Texas and Indian country within the                                                                        2013. One comment was received and
                                                                                                          The EPA may publish any comment
                                                  borders of the State and for which                                                                            adequately addressed in the final SIP
                                                                                                          received to its public docket. Do not
                                                  requirements are set forth under the                                                                          submission. This submission also
                                                                                                          submit electronically any information
                                                  CSAPR SO2 Group 2 Trading Program in                                                                          satisfied the completeness criteria of 40
                                                                                                          you consider to be Confidential
                                                  subpart DDDDD of part 97 of this                                                                              CFR part 51, appendix V. In addition, as
                                                                                                          Business Information (CBI) or other
                                                  chapter must comply with such                                                                                 explained in above preamble and in
                                                                                                          information whose disclosure is
                                                  requirements with regard to emissions                                                                         more detail in the TSD which is part of
                                                                                                          restricted by statute. Multimedia
                                                  occurring in 2015 and 2016.                                                                                   this docket, the revision meets the
                                                                                                          submissions (audio, video, etc.) must be
                                                                                                                                                                substantive SIP requirements of the
                                                  *     *     *    *     *                                accompanied by a written comment.
                                                  [FR Doc. 2017–20832 Filed 9–28–17; 8:45 am]
                                                                                                                                                                CAA, including section 110 and
                                                                                                          The written comment is considered the
                                                                                                                                                                implementing regulations.
                                                  BILLING CODE 6560–50–P                                  official comment and should include
                                                                                                          discussion of all points you wish to                  III. What action is EPA taking?
                                                                                                          make. The EPA will generally not                         EPA is approving elements of the July
                                                  ENVIRONMENTAL PROTECTION                                consider comments or comment                          23, 2013, infrastructure SIP submission
                                                  AGENCY                                                  contents located outside of the primary               from the State of Iowa, which addresses
                                                                                                          submission (i.e., on the web, cloud, or               the requirements of CAA sections
                                                  40 CFR Part 52                                          other file sharing system). For                       110(a)(1) and (2) as applicable to the
                                                                                                          additional submission methods, the full               2010 SO2 NAAQS. As stated above, EPA
                                                  [EPA–R07–OAR–2017–0267; FRL–9968–62–                    EPA public comment policy,
                                                  Region 7]
                                                                                                                                                                is approving the following elements of
                                                                                                          information about CBI or multimedia                   section 110(a)(2): (A),(B),(C),(D)(i)(II)—
                                                                                                          submissions, and general guidance on                  prevent of significant deterioration of air
                                                  Approval of Implementation Plans;
                                                                                                          making effective comments, please visit               quality (prong 3), and (D)(ii), (E) through
                                                  State of Iowa; Elements of the
                                                                                                          https://www2.epa.gov/dockets/                         (H), and (J) through (M). Details of the
                                                  Infrastructure SIP Requirements for
                                                                                                          commenting-epa-dockets.                               submission are addressed in the TSD,
                                                  the 2010 Sulfur Dioxide National
                                                  Ambient Air Quality Standard (NAAQS)                    FOR FURTHER INFORMATION CONTACT:                      included as part of the docket, and
                                                                                                          Heather Hamilton, Air Planning and                    discuss this approval action.
                                                  AGENCY: Environmental Protection                        Development Branch, U.S.                                 EPA is not taking action on section
                                                  Agency (EPA).                                           Environmental Protection Agency,                      110(a)(2)(I). Section 110(a)(2)(I) requires
                                                  ACTION: Direct final rule.                              Region 7, 11201 Renner Boulevard,                     that in the case of a plan or plan
                                                                                                          Lenexa, KS 66219 at (913) 551–7039, or                revision for areas designated as
                                                  SUMMARY:    The Environmental Protection                by email at hamilton.heather@epa.gov.                 nonattainment areas, states must meet
                                                  Agency (EPA) is taking direct final                     SUPPLEMENTARY INFORMATION:                            applicable requirements of part D of the
                                                  action to approve elements of a State                   Throughout this document ‘‘we,’’ ‘‘us,’’              CAA, relating to SIP requirements for
                                                  Implementation Plan (SIP) submission,                   and ‘‘our’’ refer to EPA. This section                designated nonattainment areas. EPA
                                                  and an amended SIP submission from                      provides additional information by                    does not expect infrastructure SIP
                                                  the State of Iowa for the 2010 Sulfur                   addressing the following:                             submissions to address element (I). The
                                                  Dioxide (SO2) National Ambient Air                                                                            specific SIP submissions for designated
                                                  Quality Standard (NAAQS).                                 I. What is being addressed in this
                                                                                                          document?                                             nonattainment areas, as required under
                                                  Infrastructure SIPs address the                           II. Have the requirements for approval of a         CAA title I, part D, are subject to
                                                  applicable requirements of Clean Air                    SIP revision been met?                                different submission schedules than
                                                  Act (CAA) section 110, which requires                     III. What action is EPA taking?                     those for section 110 infrastructure
                                                  that each state adopt and submit a SIP                    IV. Statutory and Executive Order Reviews           elements. EPA will take action on part
                                                  for the implementation, maintenance,                                                                          D attainment plan SIP submissions
                                                  and enforcement of each new or revised                  I. What is being addressed in this
                                                                                                                                                                through a separate rulemaking governed
asabaliauskas on DSKBBXCHB2PROD with RULES




                                                  NAAQS promulgated by the EPA. These                     document?
                                                                                                                                                                by the requirements for nonattainment
                                                  SIPs are commonly referred to as                          EPA is approving elements of the                    areas, as described in part D.
                                                  ‘‘infrastructure’’ SIPs. The infrastructure             2010 SO2 NAAQS infrastructure SIP                        EPA is not taking action on section
                                                  requirements are designed to ensure that                submission from the State of Iowa                     110(a)(2)(D)(i)(I) prongs 1 and 2, and
                                                  the structural components of each                       received on July 29, 2013. Specifically,              section 110(a)(2)(D)(i)(II) prong 4.
                                                  state’s air quality management program                  EPA is approving the following                           We are publishing this direct final
                                                  are adequate to meet the state’s                        elements of section 110(a)(2):                        rule without a prior proposed rule
                                                  responsibilities under the CAA.                         (A),(B),(C),(D)(i)(II)—prevent of                     because we view this as a


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Document Created: 2017-09-29 03:27:23
Document Modified: 2017-09-29 03:27:23
CategoryRegulatory Information
CollectionFederal Register
sudoc ClassAE 2.7:
GS 4.107:
AE 2.106:
PublisherOffice of the Federal Register, National Archives and Records Administration
SectionRules and Regulations
ActionFinal rule.
DatesThis final rule is effective on September 29, 2017.
ContactQuestions about the withdrawal of CSAPR FIP requirements for Texas EGUs should be directed to David Lifland, Clean Air Markets Division, Office of Atmospheric Programs, U.S. Environmental Protection Agency, MC 6204M, 1200 Pennsylvania Avenue NW., Washington, DC 20460; telephone number: (202) 343-9151;
FR Citation82 FR 45481 
RIN Number2060-AT16
CFR AssociatedEnvironmental Protection; Administrative Practice and Procedure; Air Pollution Control; Incorporation by Reference; Intergovernmental Relations; Nitrogen Oxides; Ozone; Particulate Matter; Regional Haze; Reporting and Recordkeeping Requirements and Sulfur Dioxide

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