[Federal Register Volume 84, Number 112 (Tuesday, June 11, 2019)]
[Proposed Rules]
[Pages 27049-27053]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2019-12178]


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ENVIRONMENTAL PROTECTION AGENCY

40 CFR Part 52

[EPA-R10-OAR-2018-0809, FRL-9994-96-Region 10]


Air Plan Approval; AK: Adoption Updates and Permitting Rule 
Revisions

AGENCY: Environmental Protection Agency (EPA).

ACTION: Proposed rule.

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SUMMARY: The Environmental Protection Agency (EPA) proposes to approve 
revisions to the Alaska State Implementation Plan (SIP) submitted on 
October 25, 2018. The revisions adopt changes to federal emissions 
factors and modeling guidelines, update pre-construction permitting of 
stationary sources, and fix typographical and grammatical errors. Upon 
final approval, the Alaska SIP will include provisions for electronic 
permit applications, online notice of draft permits, revised modeling 
guidelines, and updated fine particulate matter requirements in 
nonattainment areas. The EPA also proposes to approve the submitted 
revisions as meeting major source pre-construction permitting 
requirements for the Fairbanks North Star Borough fine particulate 
matter nonattainment area.

DATES: Comments must be received on or before July 11, 2019.

ADDRESSES: Submit your comments, identified by Docket ID No. EPA-R10-
OAR-2018-0809, at https://

[[Page 27050]]

www.regulations.gov. Follow the online instructions for submitting 
comments. Once submitted, comments cannot be edited or removed from 
Regulations.gov. The EPA may publish any comment received to its public 
docket. Do not electronically submit any information you consider to be 
Confidential Business Information (CBI) or other information the 
disclosure of which is restricted by statute. Multimedia submissions 
(audio, video, etc.) must be accompanied by a written comment. The 
written comment is considered the official comment and should include 
discussion of all points you wish to make. The EPA will generally not 
consider comments or comment contents located outside of the primary 
submission (i.e. on the web, cloud, or other file sharing system). For 
additional submission methods, the full EPA public comment policy, 
information about CBI or multimedia submissions, and general guidance 
on making effective comments, please visit https://www.epa.gov/dockets/commenting-epa-dockets.

FOR FURTHER INFORMATION CONTACT: Kristin Hall at (206) 553-6357, 
hall.kristin@epa.gov or Attn: Kristin Hall, Air and Radiation Division, 
EPA Region 10, 1200 Sixth Avenue, Seattle, WA 98101.

SUPPLEMENTARY INFORMATION: Throughout this document, wherever ``we,'' 
``us,'' or ``our'' is used, it means the EPA.

Table of Contents

I. Background
II. Evaluation of Submission
    A. Adoption Updates
    1. Air Pollutant Emissions Factors
    2. Air Quality Models
    3. New Source Review Provisions
    B. Permitting Revisions
    1. Electronic Notice and Submission
    2. Fine Particulate Matter
    3. Pre-Approved Emissions Limits
    C. Corrections
III. Proposed Action
IV. Incorporation by Reference
V. Statutory and Executive Order Reviews

I. Background

    Section 110 of the Clean Air Act (CAA) governs the process by which 
a state submits air quality protection requirements to the EPA for 
approval into the State Implementation Plan (SIP). The SIP is the 
state's plan to implement, maintain, and enforce the National Ambient 
Air Quality Standards (NAAQS) set by the EPA. To ensure consistency 
with federal requirements, Alaska generally submits an annual rule 
update to the EPA for approval.
    On October 25, 2018, the Alaska Department of Environmental 
Conservation (ADEC) submitted such an update. The submission includes 
revisions to Alaska Administrative Code, Title 18, Environmental 
Conservation, Chapter 50, Air Quality Control (18 AAC 50), state 
effective September 15, 2018. Specifically, the submission updates the 
dates by which certain EPA regulations are adopted by reference, brings 
the major stationary source pre-construction permitting program up-to-
date with current fine particulate matter (PM2.5) 
requirements, and fixes typographical and grammatical errors. We note 
that the submission also addresses infrastructure and interstate 
transport requirements. We intend to take action on those elements in 
separate rulemakings.

II. Evaluation of Submission

A. Adoption Updates

1. Air Pollutant Emissions Factors
    Alaska updated the adoption by reference of federal Air Pollutant 
Emissions Factors (AP-42), as of February 1, 2018.\1\ This update 
captures a recent change to emissions factors for industrial flares in 
Section 13.5 of AP-42, 5th Edition. Emissions estimates, informed by 
AP-42, are used to determine the applicability of permitting programs 
and to develop control strategies. This submitted revision keeps 
reference materials in the Alaska SIP current.
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    \1\ 18 AAC 50.035(a)(3).
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2. Air Quality Models
    Alaska updated the adoption by reference of the federal Guidelines 
on Air Quality Models, codified at 40 CFR part 51, appendix W (Appendix 
W), as of July 1, 2017.\2\ Appendix W models are used in 
preconstruction permitting, attainment planning, and other air 
pollution control efforts. Alaska's submission incorporates the most 
recent version of Appendix W, promulgated on January 17, 2017 (82 FR 
5182). Among other things, the 2017 update to Appendix W addressed the 
use of screening models, including AERSCREEN. Therefore, Alaska 
repealed separate, redundant references to AERSCREEN and the AERSCREEN 
User's Guide in state regulations.\3\ Alaska also updated a cross-
reference to alternative model recommendations and clarified that the 
ADEC Commissioner may delegate their part in the alternative model 
approval process to a designee.\4\ Alaska's regulations allows for the 
use of alternative models to those described in Appendix W when 
properly approved by the EPA and ADEC. These changes are consistent 
with the EPA's implementing regulations in 40 CFR part 51, subpart I 
for air quality modeling.
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    \2\ 18 AAC 50.040(f).
    \3\ 18 AAC 50.215(e) and 18 AAC 50.035(a)(7).
    \4\ 18 AAC 50.215(c).
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3. New Source Review Provisions
    Alaska's major new source review (major NSR) program implements 
pre-construction permitting for new and modified major stationary 
sources. The major NSR program is established in Article 3 of 18 AAC 
50, and references supporting rules throughout the Alaska SIP. To make 
it easier to keep the program up-to-date, Alaska's major NSR program 
incorporates by reference certain federal NSR regulations as of a 
specific date, and the state routinely updates this citation date.\5\ 
In the October 25, 2018 submission, Alaska updated the adoption by 
reference of portions of federal regulations that apply in areas 
designated attainment and unclassifiable (Prevention of Significant 
Deterioration (PSD)) and in areas designated nonattainment (NNSR). More 
specifically, Alaska adopted by reference portions of PSD regulations 
in 40 CFR 51.166 and 40 CFR 52.21 and portions of NNSR regulations in 
40 CFR 51.165 as of July 1, 2017.\6\ We note the state also updated the 
definition of ``fugitive emissions'' to equate to the federal 
definition in 40 CFR 51.166(b)(20), adopted by reference as of July 1, 
2017.\7\ The definition of ``Volatile Organic Compound'' or ``VOC'' was 
similarly updated to reference the federal definition in 40 CFR 
51.100(s), revised as of July 1, 2017.\8\ Please see Section B in this 
document for more discussion of the regulatory effect of these NSR 
adoption updates.
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    \5\ 18 AAC 50.040(h) and (i).
    \6\ 18 AAC 50.040(h) and (i).
    \7\ 18 AAC 50.990(40).
    \8\ 18 AAC 50.990(121).
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B. Permitting Revisions

1. Electronic Notice and Submission
    Alaska's major NSR program, established in Article 3 of 18 AAC 50, 
includes PSD and NNSR. Alaska's PSD program is governed by 18 AAC 
50.306 and refers to 18 AAC 50.040(h), which adopts certain provisions 
of 40 CFR 51.166 and 40 CFR 52.21 by reference.\9\ The NNSR program is 
governed by 18 AAC 50.311 and refers to 18 AAC 50.040(i), which adopts 
certain provisions of 40 CFR 51.165 by reference. In the October 25, 
2018 submission, Alaska updated this adoption by reference as of July 
1,

[[Page 27051]]

2017.\10\ The update captures the EPA's removal of the requirement to 
publish notice of draft major NSR permits in the local newspaper and 
provides the option to publish notice on a publicly-accessible website, 
along with the draft permit (October 18, 2016, 81 FR 71613). As a 
result, Alaska's major NSR program no longer requires newspaper notice.
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    \9\ See also 40 CFR 52.96.
    \10\ 18 AA 50.040(h) and (i).
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    Alaska also requested approval of a provision allowing ADEC to 
require owners and operators of certain minor stationary sources to 
apply for their permits online, through Alaska's Online System/
Permittee Portal.\11\ This electronic system was approved by the EPA on 
August 13, 2015 as meeting the Cross-Media Electronic Reporting Rule 
(CROMERR) (80 FR 48531). The approval applies to SIP-approved 
stationary source permitting programs, among other programs. Therefore, 
we propose to approve the minor source electronic permit application 
provision into the Alaska SIP.
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    \11\ 18 AAC 50.542(b).
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2. Fine Particulate Matter
    Alaska has a SIP-approved major NNSR program applicable in 
designated PM2.5 nonattainment areas. On January 7, 2015, 
the EPA approved revisions to that program as meeting Moderate area 
attainment planning requirements for the only designated 
PM2.5 nonattainment area in the state, the Fairbanks North 
Star Borough (FNSB) area (January 7, 2015, 80 FR 832).\12\ 
Subsequently, on August 24, 2016, the EPA promulgated changes to NNSR 
requirements for PM2.5 nonattainment areas (81 FR 
58010).\13\ The EPA's changes were made in response to a D.C. Circuit 
court decision remanding specific EPA PM2.5 rulemakings 
promulgated in 2007 and 2008.\14\ After the FNSB PM2.5 
nonattainment area was reclassified from Moderate to Serious by the 
EPA, Alaska was required to update the SIP-approved PM2.5 
NNSR program applicable in the FNSB area, in accordance with the August 
24, 2016 regulatory changes (May 9, 2017, 82 FR 21711). Alaska made 
updates in response and submitted the changes for approval as part of 
the October 25, 2018 submission.
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    \12\ See also 40 CFR 81.302.
    \13\ 18 AAC 50.040(h) and (i).
    \14\ NRDC v. EPA, 706 F.3d 428 (D.C. Cir. 2013).
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    Alaska adopted key requirements that the EPA revised in accordance 
with the D.C. Circuit court's decision, including the definitions for 
``major source,'' ``regulated NSR pollutant,'' and ``significant,'' as 
these definitions apply in PM2.5 nonattainment areas.\15\ In 
areas classified as Serious, ``major source'' is now defined in Alaska 
regulations as a stationary source that emits or has the potential to 
emit 70 tons per year of direct PM2.5 emissions, or 70 tons 
per year of any one of four regulated precursors: Nitrogen oxides 
(NOX), sulfur dioxide (SO2), VOC, and 
ammonia.\16\ For areas classified as Moderate, the major source 
threshold for direct PM2.5 emissions and regulated 
precursors remains at 100 tons per year. Alaska also defined the term 
``regulated NSR pollutant'' in designated PM2.5 
nonattainment areas as direct PM2.5 emissions and 
NOX, SO2, VOC, and ammonia as precursors to 
PM2.5.\17\ The effect of this change is that the Alaska NNSR 
program, which previously regulated NOX and SO2 
as precursors to PM2.5, now regulates all four precursors to 
PM2.5 established by the EPA on August 24, 2016 (81 FR 
58010).\18\
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    \15\ 40 CFR 51.165(a)(1).
    \16\ 40 CFR 51.165(a)(1)(iv). See also CAA section 189(b)(3).
    \17\ 40 CFR 51.165(a)(1)(xxxvii).
    \18\ Ibid.
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    Alaska also revised the definition of ``significant.'' This term is 
used to evaluate the extent to which construction at an existing major 
stationary source becomes subject to NNSR as a major modification with 
respect to the nonattainment pollutant. A major modification, defined 
in 40 CFR 51.165(a)(1)(v)(A), is any physical change in or change in 
the method of operation of a major stationary source that would result 
in: (1) A significant emissions increase of a regulated NSR pollutant, 
and (2) a significant net emissions increase of that pollutant. 
``Significant'' is separately defined in 40 CFR 51.165(a)(1)(x)(A) to 
mean a rate of emissions specified for each pollutant or precursor to 
that pollutant. Alaska defined ``significant'' in PM2.5 
nonattainment areas in the state to be 10 tons per year of direct 
PM2.5 emissions and 40 tons per year of any one of the four 
regulated precursors to PM2.5: NOX, 
SO2, VOC, and ammonia. The rates established by Alaska for 
NOX, SO2, and VOC are those set by the EPA and 
adopted by reference.\19\ We note however, the EPA's August 24, 2016 
rulemaking did not establish a significant emissions rate for ammonia 
as a precursor to PM2.5 (81 FR 58010). Rather, if a state's 
plan for a specific nonattainment area requires regulation of ammonia 
as a precursors to PM2.5, the EPA directed the state to 
define ``significant'' for ammonia for that nonattainment area.\20\ The 
EPA declined to set a minimum significant emissions rate for ammonia on 
a nationwide basis in part because, as stated in the preamble to the 
August 24, 2016, rulemaking, ``[w]e anticipate that very few states 
will actually need to control source modifications of ammonia under 
their NNSR programs for PM2.5 since (1) stationary sources 
of ammonia generally are not one of the primary causes of ambient 
PM2.5 concentrations in most PM2.5 nonattainment 
areas, and (2) according to information in the EPA's National Emissions 
Inventory database, most existing PM2.5 nonattainment areas 
do not have an existing major stationary source of ammonia to which the 
ammonia significant emission rate would be applied to determine whether 
a proposed modification of such major source would be `major' for 
ammonia.'' \21\
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    \19\ 40 CFR 51.165(a)(1)(x).
    \20\ 40 CFR 51.165(a)(1)(x)(F).
    \21\ August 24, 2016, 81 FR 58010, at page 58114.
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    Alaska's only designated PM2.5 nonattainment area is the 
FNSB area.\22\ Alaska has undertaken planning efforts to reduce 
PM2.5 levels in the area, resulting in the FNSB 
PM2.5 Moderate plan, approved by the EPA on September 8, 
2017 (82 FR 42457). In that plan, Alaska evaluated total 
PM2.5 and speciated PM2.5 monitoring data to help 
identify the appropriate emissions control strategy for the area. We 
summarized Alaska's evaluation in the preamble to our proposed action 
on the FNSB PM2.5 Moderate plan stating, ``Alaska concludes 
that throughout the winter months, residential wood heating is the 
major source of PM2.5 and accounts for 60 to 80 percent of 
the observed PM2.5.'' \23\ Emissions inventories developed 
by Alaska and approved by the EPA as part of the FNSB PM2.5 
Moderate plan demonstrate there are no existing major stationary 
sources of ammonia in the area and that the estimated total annual 
ammonia emissions for existing major stationary sources of direct 
PM2.5 emissions or other precursors for PM2.5 is 
less than 0.001 tons per day on days in which exceedances of the 
PM2.5 NAAQS typically occur.\24\ Based on the analysis in 
the FNSB PM2.5 Moderate Plan, it is unlikely that there will 
be any major modifications to major stationary sources of ammonia in 
the area. However, the EPA has reclassified the FNSB PM2.5 
nonattainment area to Serious, triggering the requirement for

[[Page 27052]]

additional planning, including revisions to NNSR requirements 
applicable in the area. In those revisions, Alaska included regulation 
of ammonia under NNSR in PM2.5 nonattainment areas.\25\
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    \22\ See 40 CFR 81.302 for legal description.
    \23\ February 2, 2017, 82 FR 9035, at page 9036.
    \24\ February 2, 2017, 82 FR 9035, at pages 9037 through 9040 
(2008 base-year emissions inventory; 2015 projected emissions 
inventory).
    \25\ May 10, 2017, 82 FR 21711. See also 40 CFR part 81.
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    In the October 25, 2018 revisions, Alaska set significant emissions 
rates for all four regulated precursors to PM2.5, including 
ammonia, and submitted the changes to the EPA for approval. 
Specifically, Alaska adopted by reference the 40 tons per year 
significant emissions rates for NOX, SO2, and VOC 
set by the EPA, and also established a significant emissions rate of 40 
tons per year for ammonia as a precursor for PM2.5, 
consistent with the thresholds of the other PM2.5 
precursors.\26\ The EPA addressed the evaluation of potential 
thresholds in the preamble to the August 24, 2016, rulemaking 
stating,''[I]n the event that a nonattainment area is classified 
Serious for PM2.5, the maximum acceptable ammonia 
[significant emissions rate] would be a rate no greater that 70 [tons 
per year] in accordance with the major source thresholds being 
finalized in this rule for major stationary sources of direct 
PM2.5 emissions and PM2.5 precursors locating in 
Serious PM2.5 nonattainment areas.'' \27\ Forty tons per 
year is well below the 70 tons per year new major source threshold for 
ammonia in PM2.5 serious nonattainment area established by 
the EPA and is consistent with the levels the EPA set for other 
PM2.5 precursors.\28\
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    \26\ 18 AAC 50.311(e).
    \27\ August 24, 2016, 81 FR 58010 at page 58114.
    \28\ 40 CFR 51.165(a)(1)(iv). See also CAA section 189(b)(3).
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    Based on the SIP-approved emissions inventories demonstrating no 
existing major sources of ammonia and extremely low total estimated 
ammonia emissions from existing stationary sources in the FNSB 
PM2.5 nonattainment area, speciated monitoring data 
identifying residential wood combustion as the primary source category 
driving PM2.5 exceedances in the area, and the EPA's stated 
maximum acceptable ammonia significant emissions rate of 70 tons per 
year for Serious PM2.5 nonattainment areas, the EPA proposes 
to find that 40 tons per year is a reasonable threshold for requiring 
review of major modifications to major stationary sources of ammonia in 
the FNSB PM2.5 nonattainment area, should any be 
constructed.\29\
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    \29\ Again, the likelihood of there being a major modification 
of a major stationary source of ammonia is extremely low. The most 
likely potential construction scenario would be the addition of 
controls to an existing combustion source that, as a by-product of 
controlling NOX, generates 70 tons per year of ammonia 
slip (which would be a very large source of NOX), and 
then a subsequent modification of that facility that results in a 
significant emissions increase of an additional 40 tons of ammonia.
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    We propose to approve the submitted revisions to the Alaska 
PM2.5 NNSR program into the SIP. Upon final action, the 
added NNSR requirements established in the EPA's 2016 PM2.5 
implementation rule that were triggered upon reclassification of the 
FNSB PM2.5 nonattainment area to Serious will be met.\30\
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    \30\ May 10, 2017, 82 FR 21711. See also 40 CFR part 81.
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3. Pre-Approved Emissions Limits
    The submission clarified requirements for pre-approved stationary 
source emissions limits. Specifically, the state revised rule language 
to make clear that if a source terminates a pre-approved limit that had 
allowed the source to avoid preconstruction review, the limit remains 
in effect until a minor permit, as well as a construction permit, is 
issued for the source.\31\
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    \31\ 18 AAC 50.230(e)(1)(A).
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C. Corrections

    Alaska submitted several corrections to typographical, grammatical, 
and cross-reference errors. First, Alaska corrected the geographic name 
of Mt. McKinley to Denali.\32\ Second, Alaska updated a provision to 
fix an obsolete cross reference and to use the term ``coal-fired'' (vs. 
``coal burning'').\33\ Third, Alaska made changes throughout 18 AAC 50 
to consistently use and spell the term ``emissions unit.'' \34\
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    \32\ 18 AAC 50.025(a)(2).
    \33\ 18 AAC 50.055(b)(6) and (a)(9).
    \34\ The October 25, 2018, submission requested approval of 
spelling changes in 18 AAC 50.220(b)(2), (c)(3), (d)(1); 18 AAC 
50.225(b)(2), (i); 18 AAC 50.230(b), (c)(1)(E); 18 AAC 50.260(g), 
(j), (l); 18 AAC 50.345(h), (m); 18 AAC 50.502(c)(2)(B), (f)(1)(B), 
(f)(2), (f)(3), (f)(4), (h)(4); 18 AAC 50.540(c)(1)(a); 18 AAC 
50.542(f)(6); 18 AAC 50.560(a); 18 AAC 50.990(8)(A), (65)(A), (78).
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III. Proposed Action

    The EPA proposes to approve, and incorporate by reference, the 
revisions to the Alaska SIP submitted on October 25, 2018 and described 
above. Upon final approval, the Alaska SIP will contain the following 
rule sections, state effective September 15, 2018:
     18 AAC 50.025 Visibility and Other Special Protection 
Areas;
     18 AAC 50.035 Documents, Procedures, and Methods Adopted 
by Reference, except (a)(6), (a)(9), and (b)(4);
     18 AAC 50.040 Federal Standards Adopted by Reference, 
except (a), (b), (c), (d), (e), (g), (j), (k);
     18 AAC 50.055 Industrial Processes and Fuel-Burning 
Equipment, except (d)(2)(B);
     18 AAC 50.215 Ambient Air Quality Analysis Methods, except 
(a)(4);
     18 AAC 50.220 Enforceable Test Methods, except (c)(1)(A), 
(B), (C), and (c)(2);
     18 AAC 50.225 Owner-Requested Limits;
     18 AAC 50.230 Preapproved Emission Limits, except (d);
     18 AAC 50.260 Guidelines for Best Available Retrofit 
Technology under the Regional Haze Rule;
     18 AAC 50.311 Nonattainment Area Major Stationary Source 
Permits;
     18 AAC 50.345 Construction, Minor and Operating Permits: 
Standard Permit Conditions, except (b), (c)(3), and (l).
     18 AAC 50.502 Minor Permits for Air Quality Protection;
     18 AAC 50.540 Minor Permit: Application;
     18 AAC 50.542 Minor Permit: Review and Issuance;
     18 AAC 50.560 General Minor Permits; and
     18 AAC 50.990 Definitions.
    The listed exceptions were not submitted in the October 25, 2018 
submission and are not part of the current federally-approved Alaska 
SIP.\35\ For more information, please see our prior actions on 
September 19, 2014 (79 FR 56268) and August 14, 2007 (72 FR 45378).
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    \35\ The excepted provisions implement New Source Performance 
Standards (NSPS), National Emissions Standards for Hazardous Air 
Pollutants (NESHAPs), and title V of the CAA and are not relied on 
by the state to attain or maintain the NAAQS under CAA section 110 
and the SIP; or are inconsistent with CAA requirements.
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    The EPA also proposes to approve the submission as fulfilling NNSR 
requirements for the FNSB PM2.5 nonattainment area set forth 
in the EPA's 2016 PM2.5 implementation rule and triggered 
upon reclassification of the area to Serious.

IV. Incorporation by Reference

    In this rule, the EPA proposes to include in a final rule, 
regulatory text that includes incorporation by reference. In accordance 
with requirements of 1 CFR 51.5, the EPA proposes to incorporate by 
reference the provisions described in Section III. The EPA has made, 
and will continue to make, these documents generally available 
electronically through www.Regulations.gov and in hard copy at the 
appropriate EPA Region 10 Office (please contact the person identified 
in the FOR FURTHER INFORMATION CONTACT section of this preamble for 
more information).

[[Page 27053]]

V. Statutory and Executive Order Reviews

    Under the CAA, the Administrator is required to approve a SIP 
submission that complies with the provisions of the CAA and applicable 
federal regulations. 42 U.S.C. 7410(k); 40 CFR 52.02(a). Thus, in 
reviewing SIP submissions, the EPA's role is to approve state choices, 
provided they meet the criteria of the CAA. Accordingly, this proposed 
action merely approves state law as meeting federal requirements and 
does not impose additional requirements beyond those imposed by state 
law. For that reason, this proposed action:
     Is not a ``significant regulatory action'' subject to 
review by the Office of Management and Budget under Executive Orders 
12866 (58 FR 51735, October 4, 1993) and 13563 (76 FR 3821, January 21, 
2011);
     Does not impose an information collection burden under the 
provisions of the Paperwork Reduction Act (44 U.S.C. 3501 et seq.);
     Is certified as not having a significant economic impact 
on a substantial number of small entities under the Regulatory 
Flexibility Act (5 U.S.C. 601 et seq.);
     Does not contain any unfunded mandate or significantly or 
uniquely affect small governments, as described in the Unfunded 
Mandates Reform Act of 1995 (Pub. L. 104-4);
     Does not have Federalism implications as specified in 
Executive Order 13132 (64 FR 43255, August 10, 1999);
     Is not an economically significant regulatory action based 
on health or safety risks subject to Executive Order 13045 (62 FR 
19885, April 23, 1997);
     Is not a significant regulatory action subject to 
Executive Order 13211 (66 FR 28355, May 22, 2001);
     Is not subject to requirements of Section 12(d) of the 
National Technology Transfer and Advancement Act of 1995 (15 U.S.C. 272 
note) because it does not involve technical standards; and
     Does not provide the EPA with the discretionary authority 
to address, as appropriate, disproportionate human health or 
environmental effects, using practicable and legally permissible 
methods, under Executive Order 12898 (59 FR 7629, February 16, 1994).
    In addition, the SIP is not approved to apply on any Indian 
reservation land or in any other area where the EPA or an Indian tribe 
has demonstrated that a tribe has jurisdiction. In those areas of 
Indian country, the rule does not have tribal implications as specified 
by Executive Order 13175 (65 FR 67249, November 9, 2000), nor will it 
impose substantial direct costs on tribal governments or preempt tribal 
law.

List of Subjects in 40 CFR Part 52

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

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

    Dated: May 29, 2019.
Chris Hladick,
Regional Administrator, Region 10.
[FR Doc. 2019-12178 Filed 6-10-19; 8:45 am]
 BILLING CODE 6560-50-P


