[Federal Register Volume 83, Number 107 (Monday, June 4, 2018)]
[Rules and Regulations]
[Pages 25776-25848]
[FR Doc No: 2018-11838]

Vol. 83

Monday,

No. 107

June 4, 2018

Part III

Environmental Protection Agency

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40 CFR Part 81

Additional Air Quality Designations for the 2015 Ozone National Ambient
Air Quality Standards; Rule

Federal Register / Vol. 83 , No. 107 / Monday, June 4, 2018 / Rules
and Regulations

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ENVIRONMENTAL PROTECTION AGENCY

40 CFR Part 81

[EPA-HQ-OAR-2017-0548; FRL-9977-72-OAR]
RIN 2060-AT94

Additional Air Quality Designations for the 2015 Ozone National
Ambient Air Quality Standards

AGENCY: Environmental Protection Agency (EPA).

ACTION: Final rule.

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SUMMARY: This rule establishes initial air quality designations for
certain areas in the United States, including areas of Indian country,
for the 2015 primary and secondary national ambient air quality
standards (NAAQS) for ozone. On November 6, 2017, the Environmental
Protection Agency (EPA) designated about 85 percent of the country as
attainment/unclassifiable and three counties as unclassifiable. In this
action, the EPA is designating all remaining areas, except for eight
counties in the San Antonio, Texas metropolitan area. Areas are being
designated as either nonattainment, attainment/unclassifiable, or
unclassifiable. Areas designated as nonattainment are also being
classified by operation of law according to the severity of their air
quality problems. The classification categories are Marginal, Moderate,
Serious, Severe, and Extreme. In addition, five nonattainment areas in
California are being voluntarily reclassified to a higher
classification.

DATE:  The effective date of this rule is August 3, 2018.

ADDRESSES: The EPA has established a docket for this action under
Docket ID NO. EPA-HQ-OAR-2017-0548. All documents in the docket are
listed in the index at http://www.regulations.gov. Although listed in
the index, some information is not publicly available, i.e.,
Confidential Business Information or other information whose disclosure
is restricted by statute. Certain other material, such as copyrighted
material, is not placed on the internet and will be publicly available
only in hard copy form. Publicly available docket materials are
available either electronically in the docket or in hard copy at the
EPA Docket Center, EPA WJC West Building, Room 3334, 1301 Constitution
Avenue NW, Washington, DC. The Public Reading Room is open from 8:30
a.m. to 4:30 p.m., Monday through Friday, excluding legal holidays. The
telephone number for the Public Reading Room is<PHONE_NUMBER>, and the
telephone number for the Office of Air and Radiation Docket and
Information Center is<PHONE_NUMBER>.
    In addition, the EPA has established a website for this rulemaking
at https://www.epa.gov/ozone-designations. The website includes the
EPA's final designations, as well as designation recommendation letters
from states and tribes, the EPA's 120-letters notifying the states
whether EPA intends to modify the state's recommendation, technical
support documents, responses to comments and other related technical
information.

FOR FURTHER INFORMATION CONTACT: Denise Scott, Office of Air Quality
Planning and Standards, U.S. Environmental Protection Agency, Mail Code
C539-01, Research Triangle Park, NC 27711, phone number<PHONE_NUMBER>
or by email at: [email protected].

Regional Office Contacts

Region I--Richard Burkhart, telephone<PHONE_NUMBER>, email at
[email protected].
Region II--Omar Hammad, telephone<PHONE_NUMBER>, email at
[email protected].
Region III--Maria Pino, telephone<PHONE_NUMBER>, email at
[email protected].
Region IV--Jane Spann, telephone<PHONE_NUMBER>, email at
[email protected].
Region V--Kathleen D'Agostino, telephone<PHONE_NUMBER>, email at
[email protected].
Region VI--Carrie Paige, telephone<PHONE_NUMBER>, email at
[email protected].
Region VII--Lachala Kemp. telephone<PHONE_NUMBER>, email at
[email protected].
Region VIII--Chris Dresser, telephone<PHONE_NUMBER>, email at
[email protected].
Region IX--Ashley Graham, telephone<PHONE_NUMBER>, email at
[email protected].
Region X--Karl Pepple, telephone<PHONE_NUMBER>, email at
[email protected].

SUPPLEMENTARY INFORMATION:
    The public may inspect the rule and state-specific technical
support information at the following locations:

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                    Regional offices                                              States
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Dave Conroy, Chief, Air Programs Branch, EPA New         Connecticut, Maine, Massachusetts, New Hampshire, Rhode
 England, 5 Post Office Square, Suite 100, Boston, MA     Island, and Vermont.
 02109-3912,<PHONE_NUMBER>.
Richard Ruvo, Chief, Air Programs Branch, EPA Region     New Jersey, New York, Puerto Rico, and Virgin Islands.
 II, 290 Broadway, 25th Floor, New York, NY 10007-1866,
<PHONE_NUMBER>.
Maria A. Pino, Acting Associate Director, Office of Air  Delaware, District of Columbia, Maryland, Pennsylvania,
 Program Planning, EPA Region III, 1650 Arch Street,      Virginia, and West Virginia.
 Philadelphia, PA 19103- 2187,<PHONE_NUMBER>.
R. Scott Davis, Chief, Air Planning and Implementation   Alabama, Florida, Georgia, Kentucky, Mississippi, North
 Branch, EPA Region IV, Sam Nunn Atlanta Federal          Carolina, South Carolina, and Tennessee.
 Center, 61 Forsyth, Street, SW, 12th Floor, Atlanta,
 GA 30303,<PHONE_NUMBER>.
John Mooney, Chief, Air Programs Branch, EPA Region V,   Illinois, Indiana, Michigan, Minnesota, Ohio, and
 77 West Jackson Street, Chicago, IL 60604, (312) 886-    Wisconsin.
 6043.
Mary Stanton, Chief, State Implementation Section B,     Arkansas, Louisiana, New Mexico, Oklahoma, and Texas.
 EPA Region VI, 1445 Ross Avenue, Dallas, TX 75202,
<PHONE_NUMBER>.
Mike Jay, Chief, Air Programs Branch, EPA Region VII,    Iowa, Kansas, Missouri, and Nebraska.
 11201 Renner Blvd., Lenexa, KS 66129,<PHONE_NUMBER>.
Monica Morales, Air Program Director, EPA Region VIII,   Colorado, Montana, North Dakota, South Dakota, Utah,
 1595 Wynkoop Street, Denver, CO 80202-1129, (303) 312-   and Wyoming.
 6936.
Laura Lawrence, Acting Chief, Air Planning Office, EPA   American Samoa, Arizona, California, Guam, Hawaii,
 Region IX, 75 Hawthorne Street, San Francisco, CA        Nevada, and Northern Mariana Islands.
 94105,<PHONE_NUMBER>.
Debra Suzuki, Manager, State and Tribal Air Programs,    Alaska, Idaho, Oregon, and Washington.
 EPA Region X, Office of Air, Waste, and Toxics, Mail
 Code OAQ-107, 1200 Sixth Avenue, Seattle, WA 98101,
<PHONE_NUMBER>.
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Table of Contents

    The following is an outline of the preamble.

I. Preamble Glossary of Terms and Acronyms
II. What is the purpose of this action?
III. What is ozone and how is it formed?
IV. What are the 2015 ozone NAAQS and the health and welfare
concerns they address?
V. What are the CAA requirements for air quality designations?
VI. What is the chronology for this designations rule and what
guidance did the EPA provide?
VII. What air quality data has the EPA used to designate areas for
the 2015 ozone NAAQS?
VIII. What are the ozone air quality classifications?
IX. What action is EPA taking to reclassify five California
nonattainment areas?
X. How can states request that an area within 5 percent of the upper
or lower limit of a classification threshold be reclassified?
    A. Five Percent Reclassifications to a Lower Classification
    B. Five Percent Reclassifications to a Higher Classification
    C. Timing of the 5 Percent Reclassifications
XI. Determining Rural Transport Areas
XII. How do designations affect Indian country?
XIII. Where can I find information forming the basis for this rule
and exchanges between the EPA, states, and tribes related to this
rule?
XIV. Environmental Justice Concerns
XV. Statutory and Executive Order Reviews
    A. Executive Order 12866: Regulatory Planning and Review and
Executive Order 13563: Improving Regulations 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 and Advancement Act (NTTAA)
    K. Executive Order 12898: Federal Actions To Address
Environmental Justice in Minority Populations and Low-Income
Populations
    L. Congressional Review Act
    M. Judicial Review

I. Preamble Glossary of Terms and Acronyms

    The following are abbreviations of terms used in the preamble.

APA Administrative Procedure Act
CAA Clean Air Act
CFR Code of Federal Regulations
DC District of Columbia
EPA Environmental Protection Agency
FR Federal Register
NAAQS National Ambient Air Quality Standards
NOX Nitrogen Oxides
NTTAA National Technology Transfer and Advancement Act
PPM Parts per million
RFA Regulatory Flexibility Act
RTA Rural Transport Area
UMRA Unfunded Mandate Reform Act of 1995
TAR Tribal Authority Rule
U.S. United States
U.S.C. United States Code
VCS Voluntary Consensus Standards
VOC Volatile Organic Compounds

II. What is the purpose of this action?

    The purpose of this action is to announce and promulgate initial
area designations for certain areas of the country with respect to the
2015 primary and secondary NAAQS for ozone, in accordance with the
requirements of Clean Air Act (CAA) section 107(d). The EPA is
designating areas as either nonattainment, attainment/unclassifiable,
or unclassifiable. In addition, this action announces the
classification for nonattainment areas, which occurs by operation of
law at the time of designation and is based on the severity of each
area's ozone air quality problems. This action also reclassifies five
areas in California to a higher classification. The classification
categories are Marginal, Moderate, Serious, Severe, and Extreme. The
EPA established the air quality thresholds that define the
classifications in a separate rule titled, ``Implementation of the 2015
National Ambient Air Quality Standards for Ozone: Nonattainment Area
Classifications Approach'' (Classifications Rule) (83 FR 10376; March
9, 2018).
    The list of all areas being designated in this action appear in the
regulatory tables included at the end of this final rule. These tables,
which will amend 40 CFR part 81, identify the designation and the
classification for each nonattainment area.
    In this action, the EPA is designating 51 areas as nonattainment.
Consistent with the EPA's ``Policy for Establishing Separate Air
Quality Designations for Areas of Indian Country'' (December 20, 2011),
the EPA is designating certain lands of the Pechanga Tribe and the
Morongo Tribe in Southern California as separate nonattainment
areas.\1\ Seven of the nonattainment areas are multi-state areas. The
EPA is also designating one area as unclassifiable. The EPA is
designating all the other areas addressed in this final action,
including both state and tribal areas, as attainment/unclassifiable.
With this action, the EPA has issued final designations for all areas
of the country with the exception of eight counties in the San Antonio,
Texas, metropolitan area. The EPA intends to issue final designations
for these eight counties by July 17, 2018.
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    \1\ Designation guidance for the 2015 ozone NAAQS is available
at https://www.epa.gov/ozone-designations/epa-guidance-area-designations-2015-ozone-naaqs.
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    The EPA is basing the designations on the most recent 3 years of
certified ozone air quality monitoring data and on an evaluation of
factors to assess contributions to nonattainment in nearby areas. State
areas designated as nonattainment are subject to planning and emission
reduction requirements as specified in CAA part D. Requirements vary
according to an area's classification. On November 17, 2016, the EPA
proposed an implementation rule to assist states in the development of
state implementation plans for attaining the ozone standards (81 FR
81276). The EPA expects to finalize this rule as soon as possible after
finalizing the nonattainment area designations for the 2015 ozone
NAAQS.

III. What is ozone and how is it formed?

    Ground-level ozone is a gas that is formed by the reaction of
volatile organic compounds (VOCs) and oxides of nitrogen
(NOX) in the atmosphere in the presence of sunlight. These
precursor emissions are emitted by many types of pollution sources,
including power plants and industrial emissions sources, on-road and
off-road motor vehicles and engines, and smaller sources, collectively
referred to as area sources. Ozone is predominately a summertime air
pollutant. However, high ozone concentrations have also been observed
in cold months, where a few areas in the Western United States (U.S.)
have experienced high levels of local VOC and NOX emissions
that have formed ozone when snow is on the ground and temperatures are
near or below freezing. Ozone and ozone precursors can be transported
to an area from sources in nearby areas or from sources located
hundreds of miles away. For purposes of determining ozone nonattainment
area boundaries, the CAA requires the EPA to include areas that
contribute to nearby violations of the NAAQS.

IV. What are the 2015 ozone NAAQS and the health and welfare concerns
they address?

    On October 1, 2015, the EPA revised both the primary and secondary
NAAQS for ozone to a level of 0.070 parts per

million (ppm) (annual fourth-highest daily maximum 8-hour average
concentration, averaged over 3 years).\2\ The level of the ozone NAAQS
previously set in 2008 is 0.75 ppm. The 2015 ozone NAAQS retain the
same general form and averaging time as the 2008 ozone NAAQS.
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    \2\ See 80 FR 65296; October 26, 2015, for a detailed
explanation of the calculation of the 3-year 8-hour average and 40
CFR part 50, Appendix U.
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    The primary ozone standards provide protection for children, older
adults, and people with asthma or other lung diseases, and other at-
risk populations against an array of adverse health effects that
include reduced lung function, increased respiratory symptoms and
pulmonary inflammation; effects that contribute to emergency department
visits or hospital admissions; and mortality. The secondary ozone
standards protect against adverse effects to the public welfare,
including those related to impacts on sensitive vegetation and forested
ecosystems.

V. What are the CAA requirements for air quality designations?

    When the EPA promulgates a new or revised NAAQS, the EPA is
required to designate all areas in the country as nonattainment,
attainment, or unclassifiable, pursuant to section 107(d)(1) of the
CAA. Section 107(d)(1)(A)(i) of the CAA defines a nonattainment area
as, ``any area that does not meet (or that contributes to ambient air
quality in a nearby area that does not meet) the national primary or
secondary ambient air quality standard for the pollutant.'' If an area
meets either prong of this definition, states should recommend and the
EPA is obligated to designate the area as ``nonattainment.'' CAA
section 107(d)(1)(A)(ii) defines an attainment area as any area that
does not meet the definition of nonattainment and that meets the NAAQS.
CAA section 107(d)(1)(A)(iii) provides that any area that the EPA
cannot designate on the basis of available information as meeting or
not meeting the standards should be designated as ``unclassifiable.''
Historically for ozone, the EPA has designated most areas that do not
meet the definition of nonattainment as ``unclassifiable/attainment.''
This category includes areas that have air quality monitoring data
meeting the NAAQS and areas that do not have monitors but for which the
EPA has no evidence that the areas may be violating the NAAQS or
contributing to a nearby violation. In the designations for the 2015
ozone NAAQS, the EPA has reversed the order of the label to be
attainment/unclassifiable to better convey the definition of the
designation category and so that the category is more easily
distinguished from the separate unclassifiable category. In a few
instances, based on circumstances where some monitoring data are
available but are not sufficient for a determination that an area is or
is not attaining the NAAQS, the EPA has designated an area as
``unclassifiable.''
    Section 107(d)(1)(B) of the CAA requires the EPA to issue initial
area designations within 2 years of promulgating a new or revised
NAAQS. However, if the Administrator has insufficient information to
make these designations within that time frame, the EPA has the
authority to extend the deadline for designation decisions by up to 1
additional year.
    By not later than 1 year after the promulgation of a new or revised
NAAQS, each state governor is required to recommend air quality
designations, including the appropriate boundaries for areas, to the
EPA. (See CAA section 107(d)(1)(A).) The EPA reviews those state
recommendations and is authorized to make any modifications the
Administrator deems necessary. The statute does not define the term
``necessary,'' but the EPA interprets this to authorize the
Administrator to modify designation recommendations that are
inconsistent with the statutory language, including modification of
recommended boundaries for nonattainment areas that are not supported
by the facts or analysis. If the EPA intends to modify a state's
recommendation, section 107(d)(1)(B) of the CAA requires the EPA to
notify the state of any such intended modifications not less than 120
days prior to the EPA's promulgation of the final designation. These
notifications are commonly known as the ``120-day letters.'' If the
state does not agree with the EPA's intended modification, the 120-day
period provides an opportunity for the state to demonstrate to the EPA
why it believes any modification proposed by the EPA is inappropriate.
If a state fails to provide any recommendation for an area, in whole or
in part, the EPA must promulgate a designation that the Administrator
deems appropriate.
    The terms ``contributes to'' and ``nearby'' in the definition of a
nonattainment area are not defined in the statute and the EPA has
discretion to interpret these ambiguous terms, based on considerations
such as the nature of a specific pollutant, the types of sources that
may contribute to violations, the form of the relevant NAAQS, and any
other relevant information. The EPA does not interpret the statute to
require the agency to establish bright line tests or thresholds for
what constitutes ``contribution'' or ``nearby'' for purposes of
designations.\3\
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    \3\ This view was confirmed in Catawba County v. EPA, 571 F.3d
20 (D.C. Cir. 2009).
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    Section 301(d) of the CAA authorizes the EPA to approve eligible
Indian tribes to implement provisions of the CAA on Indian reservations
and other areas within the tribes' jurisdiction. The Tribal Authority
Rule (TAR) (40 CFR part 49), which implements section 301(d) of the
CAA, sets forth the criteria and process for tribes to apply to the EPA
for eligibility to administer CAA programs. The designations process
contained in section 107(d) of the CAA is included among those
provisions determined to be appropriate by the EPA for treatment of
tribes in the same manner as states. Under the TAR, tribes generally
are not subject to the same submission schedules imposed by the CAA on
states. As authorized by the TAR, tribes may seek eligibility to submit
designation recommendations to the EPA.

VI. What is the chronology for this designations rule and what guidance
did the EPA provide?

    On February 25, 2016, the EPA issued guidance for states and tribal
agencies to use for purposes of making designation recommendations as
required by CAA section 107(d)(1)(A). (See February 25, 2016,
memorandum from Janet G. McCabe, Acting Assistant Administrator, to
Regional Administrators, Regions 1-10, titled, ``Area Designations for
the 2015 Ozone National Ambient Air Quality Standards'' (Designations
Guidance)). The Designations Guidance provided the anticipated timeline
for designations and identified important factors that the EPA
recommended states and tribes consider in making their recommendations
and that EPA intended to consider in promulgating designations. These
factors include air quality data, emissions and emissions-related data,
meteorological data, geography/topography, and jurisdictional
boundaries. In the Designations Guidance, the EPA asked that states and
tribes submit their designation recommendations, including appropriate
area boundaries, to the EPA by October 1, 2016. The EPA had previously
issued two guidance memoranda related to designating areas of Indian
country that also apply for designations for the 2015 ozone NAAQS. (See
December 20, 2011, memorandum from Stephen D. Page,

Director, Office of Air Quality Planning and Standards, to Regional Air
Directors, Regions I-X, titled, ``Policy for Establishing Separate Air
Quality Designations for Areas of Indian Country,'' and December 20,
2011, memorandum from Stephen D. Page, Director, Office of Air Quality
Planning and Standards, to Regional Air Directors, Regions I-X, titled,
``Guidance to Regions for Working with Tribes during the National
Ambient Air Quality Standards (NAAQS) Designations Process.'') In the
Designation Guidance, the EPA indicated the agency expected to complete
the initial designations for the 2015 ozone NAAQS on a 2-year schedule,
by October 1, 2017, consistent with CAA 107(d)(1)(B)(i).
    On November 6, 2017, the EPA designated as attainment/
unclassifiable 2,646 counties,\4\ including tribal lands within those
counties, for which the states recommended a designation of attainment
or attainment/unclassifiable. This represents about 85 percent of the
counties in the U.S. The EPA also designated a three-county area in
Washington as unclassifiable as recommended by the state. Consistent
with the EPA's Tribal Designation Guidance, the EPA designated two
areas of Indian country (Fond du Lac Band of Lake Superior Chippewa
Indians and Forest County Potawatomi Community) as separate attainment/
unclassifiable areas.
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    \4\ Any reference to ``counties'' in this action also includes
non-county administrative or statistical areas that are comparable
to counties. Louisiana parishes; the organized boroughs of Alaska;
the District of Columbia; and the independent cities of the states
of Virginia, Maryland, Missouri, and Nevada are equivalent to
counties for administrative purposes. Alaska's Unorganized Borough
is divided into 10 census areas that are statistically equivalent to
counties. As of 2017, there are currently 3,142 counties and county-
equivalents in the U.S.
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    On December 4, 2017, a coalition of environmental and health
organizations filed suit against the Administrator claiming that EPA
failed to meet its mandatory obligation to designate all areas of the
United States for the 2015 ozone NAAQS by October 1, 2017. American
Lung Association, et al. v. Pruitt (N.D. Cal. No. 4:17-cv-06900). A
coalition of 15n states also filed a similar suit on December 5, 2017.
State of California v. Pruitt (N.D. Cal. No. 4:17-cv-06936). The United
States District Court for the Northern District of California heard
arguments on plaintiffs' motions for summary judgment in both cases on
February 22, 2018. In a March 12, 2018, order, the court granted the
motions in part and ordered the EPA ``to promulgate final designations
for all areas of the country except for the eight undesignated counties
composing the San Antonio area no later than April 30, 2018'' and ``to
promulgate final designations for the San Antonio area no later than
127 days from the date of this order.'' The designation deadline for
eight-county San Antonio area is July 17, 2018.
    On or about December 22, 2017, the EPA sent 120-day letters to
Governors and tribal leaders notifying them of the EPA's preliminary
response to their designation recommendations for all areas of the
country not designated in the November 2017 action, with the exception
of eight counties in the San Antonio metropolitan area. For the areas
addressed in the 120-day letters, the EPA requested that states and
tribes submit any additional information that they wanted the EPA to
consider in making final designation decisions by February 28, 2018,
including any certified 2017 air quality monitoring data.
    Although not required by section 107(d)(2)(B) of the CAA, the EPA
also provided a 30-day public comment period on the designation
recommendations from states and tribes and the EPA's intended
designations addressed in the 120-day letters to states and tribes. The
EPA announced the public comment period in the Federal Register on
January 5, 2018 (83 FR 651). In that notice, the EPA indicated that the
agency intended to complete the designations for the areas addressed in
the responses to states and tribes by April 30, 2018.
    State and tribal recommendations and the EPA's preliminary
responses are posted on EPA's website at https://www.epa.gov/ozone-designations and are available in the docket for the designations
action. Comments from the states, tribes and the public, and EPA's
responses to significant comments, are also available in the docket in
the individual technical support documents for specific areas and in a
Response to Comments document.

VII. What air quality data has the EPA used to designate areas for the
2015 ozone NAAQS?

    The final ozone designations in this action are based primarily on
air quality monitoring data from the years 2014-2016, which were the
most recent data that states were required to certify at the time the
EPA notified the states of its intended modifications to their
recommendations. Under 40 CFR 58.16, states are required to report all
monitored ozone air quality data and associated quality assurance data
within 90 days after the end of each quarterly reporting period, and
under 40 CFR part 58.15(a)(2) states are required to submit annual
summary reports and a data certification letter to the EPA by May 1 for
ozone air quality data collected in the previous calendar year. Thus,
at the time of the 120-day letters, the most recent certification
obligation was for air quality data from 2016. In the 120-day
notification letters to states, the EPA indicated that in order for the
EPA to consider air quality data for the period 2015-2017 in the final
designation decisions for any area, a state must submit certified,
quality assured 2015-2017 air quality monitoring data for the area to
the EPA by February 28, 2018. Several states chose to submit early
certified air quality data for areas within their states. For those
areas, the EPA is basing the final designation decisions on air quality
data from 2015-2017.

VIII. What are the ozone air quality classifications?

    In accordance with CAA section 181(a)(1), each area designated as
nonattainment for the ozone NAAQS is classified by operation of law at
the same time as the area is designated by the EPA. Under Subpart 2 of
part D of title I of the CAA, state planning and emissions control
requirements for ozone are determined, in part, by a nonattainment
area's classification. The ozone nonattainment areas are classified
based on the severity of their ozone levels (as determined based on the
area's ``design value,'' which represents air quality in the area for
the most recent 3 years).\5\ The possible classifications are Marginal,
Moderate, Serious, Severe, and Extreme. Nonattainment areas with a
``lower'' classification have ozone levels that are closer to the
standard than areas with a ``higher'' classification. Areas in the
lower classification levels have fewer and/or less stringent mandatory
air quality planning and control requirements than those in higher
classifications. On March 9, 2018 (83 FR 10376), the EPA published the
Classifications Rule that establishes how the statutory classifications
will apply for the 2015 ozone NAAQS, including the air quality
thresholds for each classification category. Each

nonattainment area's design value, based on the most recent 3 years of
certified air quality monitoring data, is used to establish the
classification for the area. See Table 1.
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    \5\ The air quality design value for the 8-hour ozone NAAQS is
the 3-year average of the annual 4th highest daily maximum 8-hour
average ozone concentration. See 40 CFR part 50, Appendix U.

       Table 1--Classification Thresholds for the 2015 Ozone NAAQS
                               [0.070 ppm]
------------------------------------------------------------------------
                                                           8-hour ozone
       Nonattainment area                                  design value
         classification                                       (ppm)
------------------------------------------------------------------------
Marginal.......................  from..................            0.071
                                 up to *...............            0.081
Moderate.......................  from..................            0.081
                                 up to *...............            0.093
Serious........................  from..................            0.093
                                 up to *...............            0.105
Severe-15......................  from..................            0.105
                                 up to *...............            0.111
Severe-17......................  from..................            0.111
                                 up to *...............            0.163
Extreme........................  equal to or above.....            0.163
------------------------------------------------------------------------
* but not including

The regulatory tables included at the end of this action provide the
classification for each designated nonattainment area for the 2015
ozone NAAQS based on the design value for the area and the
classification thresholds established in the Classification Rule.

IX. What action is EPA taking to reclassify five California
nonattainment areas?

    The CAA provides states with a mechanism for addressing
nonattainment areas that may not be able to attain by the attainment
date for their classification. Pursuant to CAA section 181(b)(3), a
state may voluntarily request that the EPA reclassify a nonattainment
area to a higher classification. The EPA may not deny and must approve
any such voluntary reclassification requests. Once an area is
reclassified to a higher classification, it becomes subject to the
associated additional planning and control requirements for that higher
classification, and must attain the standard no later than the maximum
attainment date for that classification. Six nonattainment areas in
California were granted voluntary reclassifications to a higher
classification for both the 1997 and 2008 ozone NAAQS. For the 2008
ozone NAAQS, the EPA proposed to interpret the voluntary
reclassification requests for the 1997 ozone NAAQS to also apply for
the more stringent 2008 ozone NAAQS, unless the state expressly
requested otherwise. As part of the proposal for the Classifications
Rule for the 2015 NAAQS, the EPA proposed to again apply previous
voluntary reclassifications for potential nonattainment areas in
California for the 2015 ozone NAAQS, unless the state of California
explicitly requested otherwise in their comments on that proposal
(November 17, 2016; 81 FR 81285).\6\ These areas included Los Angeles-
South Coast Air Basin, San Joaquin Valley, Riverside County (Coachella
Valley), Sacramento Metro, Ventura County and Los Angeles-San
Bernardino Counties (Western Mojave) areas. The EPA believes this is an
appropriate mechanism to address attainment planning for these
California areas that were voluntarily reclassified for the 1997 ozone
NAAQS and previously used this mechanism for the 2008 ozone NAAQS. The
reclassifications will ensure that these areas will have an attainment
date for the 2015 ozone NAAQS that is no earlier than the areas'
attainment date for the 2008 ozone NAAQS. The EPA proposed this
approach in order to minimize the burden on the state of California to
separately initiate the voluntary reclassification process again. Areas
for which California declined voluntary reclassification would be
classified at the time of designation for the 2015 ozone NAAQS based on
the most recent 3 years of certified air quality monitoring data. In
response to EPA's proposal, California declined reclassification only
for the Sacramento Metro area.
---------------------------------------------------------------------------

    \6\ Proposed rule, ``Implementation of the 2015 National Ambient
Air Quality Standards for Ozone: Nonattainment Area Classifications
and State Implementation Plan Requirements.''
---------------------------------------------------------------------------

    Consistent with the comments received from the state of California
on the November 2016 proposal, the EPA is applying previous voluntary
reclassifications for five of the six California areas originally
proposed. The following areas are voluntarily reclassified to a higher
classification for the 2015 ozone NAAQS: Ventura County, CA--Serious;
Riverside County (Coachella Valley), CA--Severe-15; Los Angeles-San
Bernardino Counties (West Mojave Desert), CA--Severe-15; Los Angeles-
South Coast Air Basin, CA--Extreme; and San Joaquin Valley, CA--
Extreme. These classifications are reflected in the tables at the end
of this final rule.

X. How can states request that an area within 5 percent of the upper or
lower limit of a classification threshold be reclassified?

    Under CAA section 181(a)(4), an ozone nonattainment area may be
reclassified to a higher or lower classification (also known as a
classification bump up or a bump down) ``if an area classified under
paragraph (1) (Table 1) would have been classified in another category
if the design value in the area were 5 percent greater or 5 percent
less than the level on which such classification was based.'' That
section also states that, ``In making such adjustment, the
Administrator may consider the number of exceedances of the national
primary ambient air quality standard for ozone in the area, the level
of pollution transport between the area and other affected areas,
including both intrastate and interstate transport, and the mix of
sources and air pollutants in the area.''
    As noted in the preamble to the rule designating and classifying
areas following enactment of the CAA Amendments of 1990, the provisions
of section 181(a)(4) grant the Administrator broad discretion in

making, or determining not to make, a reclassification. (See 56 FR
56698; November 6, 1991.) In that designation action, the EPA provided
criteria to evaluate in determining whether it is appropriate to
reclassify a particular area. Because CAA section 181(b)(3) provides
that the EPA must grant any state request to reclassify an area to a
higher classification, the EPA focused these criteria primarily on how
the EPA would assess requests for a lower classification. These
criteria are:
    Request by state: The EPA does not intend to exercise its authority
to reclassify areas on the EPA's own initiative. Rather, the EPA
intends to rely on the state to submit a request for a
reclassification. A tribe may also submit such a request and, in the
case of a multi-state nonattainment area, all affected states must
submit the same reclassification request.
    Discontinuity: A 5 percent reclassification must not result in an
illogical or excessive discontinuity relative to surrounding areas. In
particular, in light of the area-wide nature of ozone formation, a
reclassification should not create a ``donut hole'' where an area of
one classification is surrounded by areas of higher classification.
    Attainment: Evidence should be available that the proposed area
would be able to attain by the earlier date specified by the lower
classification in the case of a reclassification downward.
    Emissions reductions: Evidence should be available that the area
would be very likely to achieve the appropriate total percent emission
reduction necessary in order to attain in the shorter time period for a
reclassification downward.
    Trends: Near- and long-term trends in emissions and air quality
should support a reclassification. Historical air quality data should
indicate substantial air quality improvement for a reclassification
downward. Growth projections and emission trends should support a
reclassification downward. In addition, the EPA will consider whether
vehicle miles traveled and other indicators of emissions are increasing
at higher than normal rates.
    Years of data: The same years of ozone air quality data used for
the initial designation and classification should be used for
reclassification requests.
    For ozone areas designated in 1991, the EPA approved
reclassifications when the area met the first requirement (a request by
the state to EPA) and at least some of the other criteria, and did not
violate any of the criteria (emissions reductions, trends, etc.). The
EPA established the same method and criteria for the purpose of
evaluating any reclassification requests under CAA section 181(a)(4)
for the 1997 and 2008 ozone NAAQS. The EPA intends to continue to use
this same approach for purposes of evaluating any requests for a
reclassification for the 2015 ozone NAAQS. For reclassifications
downwards, states may only request a reclassification to the next lower
classification, and air quality data from prior years cannot be used as
justification to be reclassified to an even lower classification.

A. Five Percent Reclassifications to a Lower Classification

    For an area to be eligible to be reclassified to a lower
classification under section 181(a)(4), the area's design value must be
within 5 percent of the upper limit for the next lower classification.
For example, an area with a Moderate design value of no more than 0.085
ppm would be eligible to request a reclassification to Marginal because
0.085 ppm is 5 percent more than the upper limit of 0.081 ppm for the
Marginal classification. Accordingly, areas with the following design
values may be eligible to request a reclassification to the next lower
classification: Moderate areas with a design value of 0.085 ppm or
less; Serious areas with a design value of 0.097 ppm or less; Severe
areas with a design value of 0.110 ppm or less; and for Extreme areas
with a design value of 0.171 ppm or less.

B. Five Percent Reclassifications to a Higher Classification

    An ozone nonattainment area may also be reclassified under section
181(a)(4) to the next higher classification. As with 5 percent
reclassifications to a lower classification, the EPA does not intend to
exercise its authority to reclassify areas to a higher classification
on the EPA's own initiative. Rather, the EPA intends to rely on the
state to submit a request for such a reclassification. Under this CAA
provision, areas with the following design values are eligible to
request a reclassification to the next higher classification: Marginal
areas with a design value of 0.076 ppm or more; Moderate areas with a
design value of 0.088 ppm or more; and Serious areas with a design
value of 0.099 ppm or more. Note, as discussed Section IX of this
preamble, under a separate CAA provision, a state may voluntarily
request that the EPA reclassify a nonattainment area to a higher
classification at any time and the EPA must approve the request.

C. Timing of the Five Percent Reclassifications

    A Governor or eligible tribal governing body of any area who wishes
to pursue a reclassification should submit all requests and supporting
documentation to the EPA Regional Office by July 5, 2018. This
relatively short time frame is necessary because CAA section 181(a)(4)
only authorizes the Administrator to make such reclassifications within
90 days after the initial classification. The EPA will make its
decision by September 4, 2018.

XI. Determining Rural Transport Areas

    CAA section 182(h) sets out general criteria for determining
whether an area qualifies as a Rural Transport Area (RTA). The statute
defines a RTA as an area which is designated nonattainment and neither
includes nor is adjacent to any part of a metropolitan statistical area
or consolidated metropolitan statistical area as defined at the time of
the 1990 CAA amendments. In such cases, the Administrator has
discretion to treat the area as a RTA based on a finding that the
emissions within the area do not make a significant contribution to the
ozone concentrations measured in the area or in other areas. The EPA
provided guidance on requesting RTA treatment in the February 25, 2016,
memorandum ``Area Designations for the 2015 Ozone National Ambient Air
Quality Standards.'' A RTA, regardless of its nonattainment
classification, is treated as meeting the applicable requirements of
CAA section 182 (generally relating to submissions required for ozone
nonattainment areas) if the area meets the submission requirements of a
Marginal area.
    Two states requested that the EPA find a nonattainment area in
their state to meet the criteria for treatment as a RTA. In a letter
dated October 3, 2016, California requested that the EPA make a RTA
determination for the Tuscan Buttes nonattainment area. In a letter
dated April 20, 2017, Wisconsin requested that the EPA make a RTA
determination for the Door County nonattainment area. The EPA has
determined that the final nonattainment areas for Tuscan Buttes,
California and Door County, Wisconsin, meet the criteria for treatment
as RTAs under CAA section 182(h). Documentation supporting these
determinations are contained in the final TSDs for California (section
20.0) and Wisconsin (section 3.4), which are available in the public
docket for this final action. This determination is reflected in the

regulatory tables in 40 CFR part 81 for each state.

XII. How do designations affect Indian country?

    All state areas listed in the tables at the end of this document
are designated as indicated, and include Indian country geographically
located within such areas, except as otherwise noted. Information
pertaining to areas of Indian country in these tables is intended for
CAA planning purposes only and is not an EPA determination of Indian
country land status or any Indian country boundary. The EPA lacks the
authority to establish Indian country land status, and is making no
determination of Indian country boundaries in the tables. Consistent
with the EPA's Tribal Designation Guidance, and at the request of the
tribes, the EPA is designating certain lands of the Pechanga Tribe and
the Morongo Tribe in Southern California as separate nonattainment
areas.\7\ For all other areas, the EPA is designating areas of Indian
country along with the adjacent/surrounding state area(s). Where
nonattainment areas include both Indian country and state land,
coordinated planning will help ensure that the planning decisions made
by the states and tribes complement each other and that the
nonattainment area makes progress toward attainment and ultimately
attains the 2015 ozone NAAQS.
---------------------------------------------------------------------------

    \7\ Designation guidance for the 2015 ozone NAAQS is available
at https://www.epa.gov/ozone-designations/epa-guidance-area-designations-2015-ozone-naaqs.
---------------------------------------------------------------------------

XIII. Where can I find information forming the basis for this rule and
exchanges between the EPA, states, and tribes related to this rule?

    Information providing the basis for this action is provided in the
docket for this rulemaking. The applicable EPA guidance memoranda and
copies of correspondence regarding this process between the EPA and the
states, tribes, and other parties are available for review at the EPA
Docket Center listed above in the addresses section of this document,
and on the EPA's ozone designation website at https://www.epa.gov/ozone-designations. State-specific information is available from the
EPA Regional Offices at the addresses at the top of this Preamble.

XIV. Environmental Justice Concerns

    When the EPA establishes a new or revised NAAQS, the CAA requires
the EPA to designate all areas of the U.S. as either nonattainment,
attainment, or unclassifiable. This final action addresses designation
determinations for the 2015 ozone NAAQS. In addition, nonattainment
areas are being classified according to the severity of their ozone air
quality problems. Area designations address environmental justice
concerns by ensuring that the public is properly informed about the air
quality in an area. In locations where air quality does not meet the
NAAQS, the CAA requires relevant state authorities to initiate
appropriate air quality management actions to ensure that all those
residing, working, attending school, or otherwise present in those
areas are protected, regardless of minority and economic status.

XV. Statutory and Executive Order Reviews

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

    This action is exempt from review by the Office of Management and
Budget because it responds to the CAA requirement to promulgate air
quality designations after promulgation of a new or revised NAAQS.

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

    This action is not an Executive Order 13771 regulatory action
because actions such as air quality designations after promulgating a
new revised NAAQS are exempt from review under Executive Order 12866.

C. Paperwork Reduction Act (PRA)

    This action does not impose an information collection burden under
the PRA. This action fulfills the non-discretionary duty for the EPA to
promulgate air quality designations after promulgation of a new or
revised NAAQS and does not contain any information collection
activities.

D. Regulatory Flexibility Act (RFA)

    This designation action under CAA section 107(d) is not subject to
the RFA. The RFA applies only to rules subject to notice-and-comment
rulemaking requirements under the APA, 5 U.S.C. 553, or any other
statute. Section 107(d)(2)(B) of the CAA explicitly provides that
designations are exempt from the notice-and-comment provisions of the
APA. In addition, designations under CAA section 107(d) are not among
the list of actions that are subject to the notice-and-comment
rulemaking requirements of CAA section 307(d).

E. Unfunded Mandates Reform Act (UMRA)

    This action does not contain any unfunded mandate as described in
UMRA, 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.

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. The
division of responsibility between the federal government and the
states for purposes of implementing the NAAQS is established under the
CAA.

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

    This action has tribal implications. However, it will neither
impose substantial direct compliance costs on federally recognized
tribal governments, nor preempt tribal law.
    The EPA consulted with tribal officials early in the process of
developing this regulation to permit them to have meaningful and timely
input into its development. At the beginning of the designations
process, letters were sent to all tribes who were expected to be
impacted by designations for the 2015 ozone NAAQS. These letters not
only informed the tribes of the overall designations process, but also
offered the tribes consultation to ensure early communication and
coordination. Additionally, letters were sent to potentially affected
tribes indicating the EPA's intended designations for their areas of
Indian country. To the extent possible, the EPA included the tribes'
input into the final decision-making process for designations of their
areas of Indian country for the 2015 ozone NAAQS.

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

    The EPA interprets Executive Order 13045 as applying 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 does not establish an

environmental standard intended to mitigate health or safety risks.

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 and Advancement Act (NTTAA)

    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 does not have disproportionately
high and adverse human health or environmental effects on minority
populations, low-income populations and/or indigenous peoples, as
specified in Executive Order 12898 (59 FR 7629, February 16, 1994). The
documentation for this determination is contained in Section XIII of
this preamble, ``Environmental Justice Concerns.''

L. Congressional Review Act (CRA)

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

M. Judicial Review

    Section 307(b)(1) of the CAA indicates which Federal Courts of
Appeal have venue for petitions for review of final actions by the EPA.
This section provides, in part, that petitions for review must be filed
in the Court of Appeals for the District of Columbia Circuit for: (i)
``any nationally applicable regulations promulgated, or final actions
taken, by the Administrator,'' or (ii) when 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 rule that designates areas for the 2015 ozone NAAQS is
``nationally applicable'' within the meaning of CAA section 307(b)(1).
This rule establishes designations for areas across the U.S. for the
2015 ozone NAAQS. At the core of this rulemaking is the EPA's
interpretation of the designation provisions in section 107(d)(1) of
the CAA, and its application of that interpretation to areas across the
country.
    For these reasons, the Administrator also is determining that the
final designations are of nationwide scope and effect for the purposes
of CAA section 307(b)(1). This is particularly appropriate because, in
the report on the 1977 Amendments that revised section 307(b)(1) of the
CAA, Congress noted that the Administrator's determination that an
action is of ``nationwide scope or effect'' would be appropriate for
any action that has a scope or effect beyond a single judicial circuit.
H.R. Rep. No. 95-294 at 323, 324, reprinted in 1977 U.S.C.C.A.N. 1402-
03. Here, the scope and effect of this rulemaking extends to numerous
judicial circuits since the designations apply to areas across the
country. In these circumstances, CAA section 307(b)(1) and its
legislative history calls for the Administrator to find the rule to be
of ``nationwide scope or effect'' and for venue to be in the District
of Columbia Circuit.
    Thus, any petitions for review of these final designations must be
filed in the Court of Appeals for the District of Columbia Circuit
within 60 days from the date of this final action is published in the
Federal Register.

List of Subjects in 40 CFR Part 81

    Environmental protection, Air pollution control, National parks,
Wilderness areas.

    Dated: April 30, 2018
E. Scott Pruitt,
Administrator.

    For the reasons set forth in the preamble, 40 CFR part 81 is
amended as follows:

PART 81--DESIGNATIONS OF AREAS FOR AIR QUALITY PLANNING PURPOSES

0
1. The authority citation for part 81 continues to read as follows:

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

Subpart C--Section 107 Attainment Status Designations

0
2. Section 81.302 is amended by revising the table titled ``Alaska--
2015 8-Hour Ozone NAAQS (Primary and Secondary)'' to read as follows:

Sec.  81.302  Alaska.

* * * * *

                                         Alaska--2015 8-Hour Ozone NAAQS
                                             [Primary and Secondary]
----------------------------------------------------------------------------------------------------------------
                                                 Designation                           Classification
       Designated area \1\        ------------------------------------------------------------------------------
                                     Date \2\              Type                Date               Type
----------------------------------------------------------------------------------------------------------------
Aleutians East Borough...........      1/16/18  Attainment/Unclassifiable
Aleutians West Census Area.......      1/16/18  Attainment/Unclassifiable
Anchorage Municipality...........  ...........  Attainment/Unclassifiable
Bethel Census Area...............      1/16/18  Attainment/Unclassifiable
Bristol Bay Borough..............      1/16/18  Attainment/Unclassifiable
Denali Borough...................      1/16/18  Attainment/Unclassifiable
Dillingham Census Area...........      1/16/18  Attainment/Unclassifiable
Fairbanks North Star Borough.....      1/16/18  Attainment/Unclassifiable
Haines Borough...................      1/16/18  Attainment/Unclassifiable
Hoonah-Angoon Census Area........      1/16/18  Attainment/Unclassifiable
Juneau City and Borough..........      1/16/18  Attainment/Unclassifiable

Kenai Peninsula Borough..........      1/16/18  Attainment/Unclassifiable
Ketchikan Gateway Borough........      1/16/18  Attainment/Unclassifiable
Kodiak Island Borough............      1/16/18  Attainment/Unclassifiable
Kusilvak Census Area.............      1/16/18  Attainment/Unclassifiable
Lake and Peninsula Borough.......      1/16/18  Attainment/Unclassifiable
Matanuska-Susitna Borough........  ...........  Attainment/Unclassifiable
Nome Census Area.................      1/16/18  Attainment/Unclassifiable
North Slope Borough..............      1/16/18  Attainment/Unclassifiable
Northwest Arctic Borough.........      1/16/18  Attainment/Unclassifiable
Petersburg Borough...............      1/16/18  Attainment/Unclassifiable
Prince of Wales-Hyder Census Area      1/16/18  Attainment/Unclassifiable
Sitka City and Borough...........      1/16/18  Attainment/Unclassifiable
Skagway Municipality.............      1/16/18  Attainment/Unclassifiable
Southeast Fairbanks Census Area..      1/16/18  Attainment/Unclassifiable
Valdez-Cordova Census Area.......      1/16/18  Attainment/Unclassifiable
Wrangell City and Borough........      1/16/18  Attainment/Unclassifiable
Yakutat City and Borough.........      1/16/18  Attainment/Unclassifiable
Yukon-Koyukuk Census Area........      1/16/18  Attainment/Unclassifiable
----------------------------------------------------------------------------------------------------------------
\1\ Includes any Indian country in each county or area, unless otherwise specified. EPA is not determining the
  boundaries of any area of Indian country in this table, including any area of Indian country located in the
  larger designation area. The inclusion of any Indian country in the designation area is not a determination
  that the state has regulatory authority under the Clean Air Act for such Indian country.
\2\ This date is August 3, 2018, unless otherwise noted.

* * * * *

0
3. Section 81. 303 is amended by revising the table titled ``Arizona--
2015 8-Hour Ozone NAAQS (Primary and Secondary)'' to read as follows:

Sec.  81.303  Arizona.

* * * * *

                                        Arizona--2015 8-Hour Ozone NAAQS
                                             [Primary and Secondary]
----------------------------------------------------------------------------------------------------------------
                                                 Designation                           Classification
       Designated area \1\        ------------------------------------------------------------------------------
                                     Date \2\              Type              Date \2\             Type
----------------------------------------------------------------------------------------------------------------
Phoenix-Mesa, AZ.................  ...........  Nonattainment............  ...........  Marginal.
    Gila County (part):
        T2N, R12E (except that
         portion in Maricopa
         County); T3N, R12E
         (except that portion in
         Maricopa County); T4N,
         R12E (Sections 25
         through 29 (except those
         portions in Maricopa
         County) and 33 through
         36 (except those
         portions in Maricopa
         County)).
    Maricopa County (part):

        T1N, R1E (except that
         portion in Indian
         Country); T1N, R2E; T1N,
         R3E; T1N, R4E (except
         that portion in Indian
         Country); T1N, R5E
         (except that portion in
         Indian Country); T1N,
         R6E; T1N, R7E; T1N, R1W;
         T1N, R2W; T1N, R3W; T1N,
         R4W; T1N, R5W; T1N, R6W;
         T1N, R7W; T1N, R8W; T2N,
         R1E; T2N, R2E; T2N, R3E;
         T2N, R4E; T2N, R6E
         (except that portion in
         Indian Country); T2N,
         R7E (except that portion
         in Indian Country); T2N,
         R8E; T2N, R9E; T2N,
         R10E; T2N, R11E; T2N,
         R12E (except that
         portion in Gila County);
         T2N, R13E (except that
         portion in Gila County);
         T2N, R1W; T2N, R2W; T2N,
         R3W; T2N, R4W; T2N, R5W;
         T2N, R6W; T2N, R7W; T2N,
         R8W; T3N, R1E; T3N, R2E;
         T3N, R3E; T3N, R4E; T3N,
         R5E (except that portion
         in Indian Country); T3N,
         R6E (except that portion
         in Indian Country); T3N,
         R7E (except that portion
         in Indian Country); T3N,
         R8E; T3N, R9E; T3N, R10E
         (except that portion in
         Gila County); T3N, R11E
         (except that portion in
         Gila County); T3N, R12E
         (except that portion in
         Gila County); T3N, R1W;
         T3N, R2W T3N, R3W; T3N,
         R4W; T3N, R5W; T3N, R6W;
         T4N, R1E; T4N, R2E; T4N,
         R3E; T4N, R4E; T4N, R5E;
         T4N, R6E (except that
         portion in Indian
         Country); T4N, R7E
         (except that portion in
         Indian Country); T4N,
         R8E T4N, R9E; T4N, R10E
         (except that portion in
         Gila County); T4N, R11E
         (except that portion in
         Gila County); T4N, R12E
         (except that portion in
         Gila County); T4N, R1W;
         T4N, R2W; T4N, R3W; T4N,
         R4W; T4N, R5W; T4N, R6W;
         T5N, R1E; T5N, R2E; T5N,
         R3E; T5N, R4E; T5N, R5E;
         T5N, R6E; T5N, R7E; T5N,
         R8E; T5N, R9E (except
         that portion in Gila
         County); T5N, R10E
         (except that portion in
         Gila County); T5N, R1W;
         T5N, R2W; T5N, R3W; T5N,
         R4W; T5N, R5W; T6N, R1E
         (except that portion in
         Yavapai County); T6N,
         R2E; T6N, R3E; T6N, R4E;
         T6N, R5E; T6N, R6E; T6N,
         R7E; T6N, R8E; T6N, R9E
         (except that portion in
         Gila County); T6N, R10E
         (except that portion in
         Gila County); T6N, R1W
         (except that portion in
         Yavapai County); T6N,
         R2W; T6N, R3W; T6N, R4W;
         T6N, R5W; T7N, R1E
         (except that portion in
         Yavapai County); T7N,
         R2E (except that portion
         in Yavapai County); T7N,
         R3E; T7N, R4E; T7N, R5E;
         T7N, R6E; T7N, R7E; T7N,
         R8E; T7N, R9E (except
         that portion in Gila
         County); T7N, R1W
         (except that portion in
         Yavapai County); T7N,
         R2W (except that portion
         in Yavapai County); T8N,
         R2E (except that portion
         in Yavapai County); T8N,
         R3E (except that portion
         in Yavapai County); T8N,
         R4E (except that portion
         in Yavapai County); T8N,
         R5E (except that portion
         in Yavapai County); T8N,
         R6E (except that portion
         in Yavapai County); T8N,
         R7E (except that portion
         in Yavapai County); T8N,
         R8E (except that portion
         in Yavapai and Gila
         Counties); T8N, R9E
         (except that portion in
         Yavapai and Gila
         Counties); T1S, R1E
         (except that portion in
         Indian Country); T1S,
         R2E (except that portion
         in Pinal County and in
         Indian Country); T1S,
         R3E; T1S, R4E; T1S, R5E;
         T1S, R6E; T1S, R7E; T1S,
         R1W; T1S, R2W; T1S, R3W;
         T1S, R4W; T1S, R5W; T1S,
         R6W; T2S, R1E (except
         that portion in Indian
         Country); T2S, R5E; T2S,
         R6E; T2S, R7E; T2S, R1W;
         T2S, R2W; T2S, R3W; T2S,
         R4W; T2S, R5W; T3S, R1E;
         T3S, R1W; T3S, R2W; T3S,
         R3W; T3S, R4W; T3S, R5W;
         T4S, R1E; T4S, R1W; T4S,
         R2W; T4S, R3W; T4S, R4W;
         T4S, R5W; T5S, R4W
         (Sections 1 through 22
         and 27 through 34).
    Pinal County (part):
        T1N, R8E; T1N, R9E; T1N,
         R10E; T1S, R8E; T1S,
         R9E; T1S, R10E; T2S, R8E
         (Sections 1 through 10,
         15 through 22, and 27
         through 34); T2S, R9E
         (Sections 1 through 6);
         T2S, R10E (Sections 1
         through 6); T3S, R7E
         (Sections 1 through 6,
         11 through 14, 23
         through 26, and 35
         through 36); T3S, R8E
         (Sections 3 through 10,
         15 through 22, and 27
         through 34).
    Fort McDowell Yavapai Nation:
        Gila River Indian
         Community of the Gila
         River Indian
         Reservation, Arizona.
        Includes only non-
         contiguous areas of
         Indian country known as
         ``parcels M & N''.\3\
    Tohono O'odham Nation of
     Arizona:
        Salt River Pima-Maricopa
         Indian Community of the
         Salt River Reservation.
Yuma, AZ.........................  ...........  Nonattainment............  ...........  Marginal.
    Yuma County (part):
        That portion within Yuma
         County of the area
         described by the
         following:
        1. Bounded on the north
         and west by the Arizona
         state line.
        2. Bounded on the south
         by the line of latitude
         at 32[deg]39'20'' N.
        3. Bounded on the east by
         the line of longitude
         114[deg]33'50'' W.
        4. And excluding the
         sections 10, 11, and 12
         of township T9S, R23W
         and any portion in
         Indian Country.
    Cocopah Tribe of Arizona.
    Quechan Tribe of the Fort
     Yuma Indian Reservation.
Gila River Indian Community of     ...........  Attainment/Unclassifiable
 the Gila River Indian
 Reservation, Arizona.
    Includes the contiguous main
     body of the reservation,
     excluding non-contiguous
     areas of Indian country
     known as ``parcels M &
     N''.\3\
Rest of State....................  ...........  Attainment/Unclassifiable
        Apache County............      1/16/18
        Cochise County...........      1/16/18
        Coconino County.
        Gila County (part)
         remainder.
        Graham County.
        Greenlee County..........
        La Paz County.
        Maricopa County (part)
         remainder.

        Mohave County.
        Navajo County.
        Pima County.
        Pinal County (part)
         remainder.
        Santa Cruz County........      1/16/18
        Yavapai County.
        Yuma County (part)
         remainder.
----------------------------------------------------------------------------------------------------------------
\1\ Includes any Indian country in each county or area, unless otherwise specified. EPA is not determining the
  boundaries of any area of Indian country in this table, including any area of Indian country located in the
  larger designation area. The inclusion of any Indian country in the designation area is not a determination
  that the state has regulatory authority under the Clean Air Act for such Indian country.
\2\ This date is August 3, 2018, unless otherwise noted.
\3\ See Section 3.0 of the EPA's technical support document for Arizona, titled ``Arizona Final Area
  Designations for the 2015 Ozone National Ambient Air Quality Standards Technical Support Document (TSD),'' for
  more information and a map showing the locations of ``parcels M & N'' (available in Docket ID: EPA-HQ-OAR-2017-
  0548).

* * * * *

0
4. Section 81.305 is amended by revising the table titled
``California--2015 8-Hour Ozone NAAQS (Primary and Secondary)'' to read
as follows:

Sec.  81.305  California.

* * * * *

                                       California--2015 8-Hour Ozone NAAQS
                                             [Primary and Secondary]
----------------------------------------------------------------------------------------------------------------
                                                 Designation                           Classification
       Designated area \1\        ------------------------------------------------------------------------------
                                     Date \2\              Type              Date \2\             Type
----------------------------------------------------------------------------------------------------------------
Amador County, CA................  ...........  Nonattainment............  ...........  Marginal.
    Amador County:
        Buena Vista Rancheria of
         Me-Wuk Indians of
         California.
        Jackson Band of Miwuk
         Indians.
Calaveras County, CA.............  ...........  Nonattainment............  ...........  Marginal.
    Calaveras County:
        California Valley Miwok
         Tribe.
Butte County, CA.................  ...........  Nonattainment............  ...........  Marginal.
    Butte County:
        Berry Creek Rancheria of
         Maidu Indians of
         California.
        Enterprise Rancheria of
         Maidu Indians of
         California.
        Mechoopda Indian Tribe of
         Chico Rancheria.
        Mooretown Rancheria of
         Maidu Indians of
         California.
Imperial County, CA..............  ...........  Nonattainment............  ...........  Marginal.
    Imperial County:
        Quechan Tribe of the Fort
         Yuma Indian Reservation.
        Torres Martinez Desert
         Cahuilla Indians.
Kern County (Eastern Kern), CA...  ...........  Nonattainment............  ...........  Moderate.
    Kern County (part):
        That portion of Kern
         County (with the
         exception of that
         portion in Hydrologic
         Unit Number 18090205--
         the Indian Wells Valley)
         east and south of a line
         described as follows:
         Beginning at the Kern-
         Los Angeles County
         boundary and running
         north and east along the
         northwest boundary of
         the Rancho La Liebre
         Land Grant to the point
         of intersection with the
         range line common to
         Range 16 West and Range
         17 West, San Bernardino
         Base and Meridian; north
         along the range line to
         the point of
         intersection with the
         Rancho El Tejon Land
         Grant boundary; then
         southeast, northeast,
         and northwest along the
         boundary of the Rancho
         El Tejon Grant to the
         northwest corner of
         Section 3, Township 11
         North, Range 17 West;
         then west 1.2 miles;
         then north to the Rancho
         El Tejon Land Grant
         boundary; then northwest
         along the Rancho El
         Tejon line to the
         southeast corner of
         Section 34, Township 32
         South, Range 30 East,
         Mount Diablo Base and
         Meridian; then north to
         the northwest corner of
         Section 35, Township 31
         South, Range 30 East;
         then northeast along the
         boundary of the Rancho
         El Tejon Land Grant to
         the southwest corner of
         Section 18, Township 31
         South, Range 31 East;
         then east to the
         southeast corner of
         Section 13, Township 31
         South, Range 31 East;
         then north along the
         range line common to
         Range 31 East and Range
         32 East, Mount Diablo
         Base and Meridian, to
         the northwest corner of
         Section 6, Township 29
         South, Range 32 East;
         then east to the
         southwest corner of
         Section 31, Township 28
         South, Range 32 East;
         then north along the
         range line common to
         Range 31 East and Range
         32 East to the northwest
         corner of Section 6,
         Township 28 South, Range
         32 East, then west to
         the southeast corner of
         Section 36, Township 27
         South, Range 31 East,
         then north along the
         range line common to
         Range 31 East and Range
         32 East to the Kern-
         Tulare County boundary.
Los Angeles-San Bernardino         ...........  Nonattainment............  ...........  Severe-15.
 Counties (West Mojave Desert),
 CA.
    Los Angeles County (part):

        That portion of Los
         Angeles County which
         lies north and east of a
         line described as
         follows: Beginning at
         the Los Angeles-San
         Bernardino County
         boundary and running
         west along the Township
         line common to Township
         3 North and Township 2
         North, San Bernardino
         Base and Meridian; then
         north along the range
         line common to Range 8
         West and Range 9 West;
         then west along the
         Township line common to
         Township 4 North and
         Township 3 North; then
         north along the range
         line common to Range 12
         West and Range 13 West
         to the southeast corner
         of Section 12, Township
         5 North and Range 13
         West; then west along
         the south boundaries of
         Sections 12, 11, 10, 9,
         8, and 7, Township 5
         North and Range 13 West
         to the boundary of the
         Angeles National Forest
         which is collinear with
         the range line common to
         Range 13 West and Range
         14 West; then north and
         west along the Angeles
         National Forest boundary
         to the point of
         intersection with the
         Township line common to
         Township 7 North and
         Township 6 North (point
         is at the northwest
         corner of Section 4 in
         Township 6 North and
         Range 14 West); then
         west along the Township
         line common to Township
         7 North and Township 6
         North; then north along
         the range line common to
         Range 15 West and Range
         16 West to the southeast
         corner of Section 13,
         Township 7 North and
         Range 16 West; then
         along the south
         boundaries of Sections
         13, 14, 15, 16, 17, and
         18, Township 7 North and
         Range 16 West; then
         north along the range
         line common to Range 16
         West and Range 17 West
         to the north boundary of
         the Angeles National
         Forest (collinear with
         the Township line common
         to Township 8 North and
         Township 7 North); then
         west and north along the
         Angeles National Forest
         boundary to the point of
         intersection with the
         south boundary of the
         Rancho La Liebre Land
         Grant; then west and
         north along this land
         grant boundary to the
         Los Angeles-Kern County
         boundary.
    San Bernardino County (part):
        That portion of San
         Bernardino County which
         lies north and east of a
         line described as
         follows: Beginning at
         the San Bernardino-
         Riverside County
         boundary and running
         north along the range
         line common to Range 3
         East and Range 2 East,
         San Bernardino Base and
         Meridian; then west
         along the Township line
         common to Township 3
         North and Township 2
         North to the San
         Bernardino-Los Angeles
         County boundary; and
         that portion of San
         Bernardino County which
         lies south and west of a
         line described as
         follows: Latitude 35
         degrees, 10 minutes
         north and longitude 115
         degrees, 45 minutes
         west.
    Twenty-Nine Palms Band of
     Mission Indians of
     California.
Los Angeles-South Coast Air        ...........  Nonattainment............  ...........  Extreme.
 Basin, CA.
    Los Angeles County (part):
        That portion of Los
         Angeles County which
         lies south and west of a
         line described as
         follows: Beginning at
         the Los Angeles-San
         Bernardino County
         boundary and running
         west along the Township
         line common to Township
         3 North and Township 2
         North San Bernardino
         Base and Meridian; then
         north along the range
         line common to Range 8
         West and Range 9 West;
         then west along the
         Township line common to
         Township 4 North and
         Township 3 North; then
         north along the range
         line common to Range 12
         West and Range 13 West
         to the southeast corner
         of Section 12, Township
         5 North and Range 13
         West; then west along
         the south boundaries of
         Sections 12, 11, 10, 9,
         8, and 7, Township 5
         North and Range 13 West
         to the boundary of the
         Angeles National Forest
         which is collinear with
         the range line common to
         Range 13 West and Range
         14 West; then north and
         west along the Angeles
         National Forest boundary
         to the point of
         intersection with the
         Township line common to
         Township 7 North and
         Township 6 North (point
         is at the northwest
         corner of Section 4 in
         Township 6 North and
         Range 14 West); then
         west along the Township
         line common to Township
         7 North and Township 6
         North; then north along
         the range line common to
         Range 15 West and Range
         16 West to the southeast
         corner of Section 13,
         Township 7 North and
         Range 16 West; then
         along the south
         boundaries of Sections
         13, 14, 15, 16, 17, and
         18, Township 7 North and
         Range 16 West; then
         north along the range
         line common to Range 16
         West and Range 17 West
         to the north boundary of
         the Angeles National
         Forest (collinear with
         the Township line common
         to Township 8 North and
         Township 7 North); then
         west and north along the
         Angeles National Forest
         boundary to the point of
         intersection with the
         south boundary of the
         Rancho La Liebre Land
         Grant; then west and
         north along this land
         grant boundary to the
         Los Angeles-Kern County
         boundary.
    Orange County.
    Riverside County (part):

        That portion of Riverside
         County which lies to the
         west of a line described
         as follows: Beginning at
         the Riverside-San Diego
         County boundary and
         running north along the
         range line common to
         Range 4 East and Range 3
         East, San Bernardino
         Base and Meridian; then
         east along the Township
         line common to Township
         8 South and Township 7
         South; then north along
         the range line common to
         Range 5 East and Range 4
         East; then west along
         the southern boundaries
         of Sections 25, 26, and
         27, Township 7 South,
         Range 4 East, then North
         along the west
         boundaries of Sections
         27, 22, 15, 10, and 3
         Township 7 South, Range
         4 East, then East along
         the Township line common
         to Township 6 South and
         Township 7 South to the
         southwest corner of
         Section 34, Township 6
         South, Range 4 East;
         then north along the
         west boundaries of
         Sections 34, 27, 22, 15,
         10, and 3, Township 6
         South, Range 4 East;
         then west along the
         Township line common to
         Township 5 South and
         Township 6 South; then
         north along the range
         line common to Range 4
         East and Range 3 East;
         then west along the
         south boundaries of
         Sections 13, 14, 15, 16,
         17, and 18, Township 5
         South, Range 3 East;
         then north along the
         range line common to
         Range 2 East and Range 3
         East; to the Riverside-
         San Bernardino County
         line.
    San Bernardino County (part):
        That portion of San
         Bernardino County which
         lies south and west of a
         line described as
         follows: Beginning at
         the San Bernardino-
         Riverside County
         boundary and running
         north along the range
         line common to Range 3
         East and Range 2 East,
         San Bernardino Base and
         Meridian; then west
         along the Township line
         common to Township 3
         North and Township 2
         North to the San
         Bernardino-Los Angeles
         County boundary.
    Cahuilla Band of Indians.
    Pechanga Band of
     Luise[ntilde]o Mission
     Indians of the Pechanga
     Reservation:
        Includes only non-
         contiguous tribal lands
         known as the Meadowbrook
         parcel.\3\
    Ramona Band of Cahuilla.
    San Manuel Band of Mission
     Indians.
    Soboba Band of Luise[ntilde]o
     Indians.
Mariposa County, CA..............  ...........  Nonattainment............  ...........  Marginal.
    Mariposa County.
Nevada County (Western part), CA.  ...........  Nonattainment............  ...........  Moderate.
    Nevada County (part):
        That portion of Nevada
         County, which lies west
         of a line, described as
         follows: Beginning at
         the Nevada-Placer County
         boundary and running
         north along the western
         boundaries of Sections
         24, 13, 12, 1, Township
         17 North, Range 14 East,
         Mount Diablo Base and
         Meridian, and Sections
         36, 25, 24, 13, 12,
         Township 18 North, Range
         14 East to the Nevada-
         Sierra County boundary.
Riverside County (Coachella        ...........  Nonattainment............  ...........  Severe-15.
 Valley), CA.
    Riverside County (part):
        That portion of Riverside
         County which lies to the
         east of a line described
         as follows: Beginning at
         the Riverside-San Diego
         County boundary and
         running north along the
         range line common to
         Range 4 East and Range 3
         East, San Bernardino
         Base and Meridian; then
         east along the Township
         line common to Township
         8 South and Township 7
         South; then north along
         the range line common to
         Range 5 East and Range 4
         East; then west along
         the Township line common
         to Township 6 South and
         Township 7 South to the
         southwest corner of
         Section 34, Township 6
         South, Range 4 East;
         then north along the
         west boundaries of
         Sections 34, 27, 22, 15,
         10, and 3, Township 6
         South, Range 4 East;
         then west along the
         Township line common to
         Township 5 South and
         Township 6 South; then
         north along the range
         line common to Range 4
         East and Range 3 East;
         then west along the
         south boundaries of
         Sections 13, 14, 15, 16,
         17, and 18, Township 5
         South, Range 3 East;
         then north along the
         range line common to
         Range 2 East and Range 3
         East; to the Riverside-
         San Bernardino County
         line. And that portion
         of Riverside County
         which lies to the west
         of a line described as
         follows: That segment of
         the southwestern
         boundary line of
         hydrologic Unit Number
         18100100 within
         Riverside County.
    Agua Caliente Band of
     Cahuilla Indians of the Agua
     Caliente Indian Reservation.
    Augustine Band of Cahuilla
     Indians.
    Cabazon Band of Mission
     Indians.
    Santa Rosa Band of Cahuilla
     Indians.
    Torres Martinez Desert
     Cahuilla Indians.
    Twenty-Nine Palms Band of
     Mission Indians of
     California.
Sacramento Metro, CA.............  ...........  Nonattainment............  ...........  Moderate.
    El Dorado County (part):
        All portions of the
         county except that
         portion of El Dorado
         County within the
         drainage area naturally
         tributary to Lake Tahoe
         including said Lake.
    Placer County (part):

        All portions of the
         county except that
         portion of Placer County
         within the drainage area
         naturally tributary to
         Lake Tahoe including
         said Lake, plus that
         area in the vicinity of
         the head of the Truckee
         River described as
         follows: Commencing at
         the point common to the
         aforementioned drainage
         area crestline and the
         line common to Townships
         15 North and 16 North,
         Mount Diablo Base and
         Meridian, and following
         that line in a westerly
         direction to the
         northwest corner of
         Section 3, Township 15
         North, Range 16 East
         Mount Diablo Base and
         Meridian, thence south
         along the west line of
         Sections 3 and 10,
         Township 15 North, Range
         16 East, Mount Diablo
         Base and Meridian, to
         the intersection with
         the said drainage area
         crestline, thence
         following the said
         drainage area boundary
         in a southeasterly, then
         northeasterly direction
         to and along the Lake
         Tahoe Dam, thence
         following the said
         drainage area crestline
         in a northeasterly, then
         northwesterly direction
         to the point of
         beginning.
    Sacramento County.
    Solano County (part):
        That portion of Solano
         County which lies north
         and east of a line
         described as follows:
         Beginning at the
         intersection of the
         westerly boundary of
         Solano County and the \1/
         4\ section line running
         east and west through
         the center of Section
         34; Township 6 North,
         Range 2 West, Mount
         Diablo Base and
         Meridian, thence east
         along said \1/4\ section
         line to the east
         boundary of Section 36,
         Township 6 North, Range
         2 West, thence south \1/
         2\ mile and east 2.0
         miles, more or less,
         along the west and south
         boundary of Los Putos
         Rancho to the northwest
         corner of Section 4,
         Township 5 North, Range
         1 West, thence east
         along a line common to
         Township 5 North and
         Township 6 North to the
         northeast corner of
         Section 3, Township 5
         North, Range 1 East,
         thence south along
         section lines to the
         southeast corner of
         Section 10, Township 3
         North, Range 1 East,
         thence east along
         section lines to the
         south \1/4\ corner of
         Section 8, Township 3
         North, Range 2 East,
         thence east to the
         boundary between Solano
         and Sacramento Counties.
    Sutter County (part):
        Portion south of a line
         connecting the northern
         border of Yolo County to
         the SW tip of Yuba
         County and continuing
         along the southern Yuba
         County border to Placer
         County.
    Yolo County:
        Shingle Springs Band of
         Miwok Indians, Shingle
         Springs Rancheria.
        United Auburn Indian
         Community of the Auburn
         Rancheria of California.
        Wilton Rancheria.
        Yocha Dehe Wintun Nation.
San Diego County, CA.............  ...........  Nonattainment............  ...........  Moderate.
    San Diego County:
        Barona Group of Capitan
         Grande of Mission
         Indians of the Barona
         Reservation.
        Campo Band of
         Diegue[ntilde]o Mission
         Indians of the Campo
         Indian Reservation.
        Capitan Grande Band of
         Diegue[ntilde]o Mission
         Indians of California.
        Ewiiaapaayp Band of
         Kumeyaay Indians.
        Iipay Nation of Santa
         Ysabel.
        Inaja Band of
         Diegue[ntilde]o Mission
         Indians of the Inaja and
         Cosmit Reservation.
        Jamul Indian Village of
         California.
        La Jolla Band of
         Luise[ntilde]o Indians.
        La Posta Band of
         Diegue[ntilde]o Mission
         Indians of the La Posta
         Indian Reservation.
        Los Coyotes Band of
         Cahuilla and
         Cupe[ntilde]o Indians.
        Manzanita Band of
         Diegue[ntilde]o Mission
         Indians of the Manzanita
         Reservation.
        Mesa Grande Band of
         Diegue[ntilde]o Mission
         Indians of the Mesa
         Grande Reservation.
        Pala Band of Mission
         Indians.
        Pauma Band of
         Luise[ntilde]o Mission
         Indians of the Pauma and
         Yuima Reservation.
        Rincon Band of
         Luise[ntilde]o Mission
         Indians of the Rincon
         Reservation.
        San Pasqual Band of
         Diegue[ntilde]o Mission
         Indians of California.
        Sycuan Band of the
         Kumeyaay Nation.
        Viejas (Baron Long) Group
         of Capitan Grande Band
         of Mission Indians of
         the Viejas Reservation.
San Francisco Bay Area, CA.......  ...........  Nonattainment............  ...........  Marginal.
    Alameda County.
    Contra Costa County.
    Marin County.
    Napa County.
    San Francisco County.
    San Mateo County.
    Santa Clara County.
    Solano County (part):
        Portion of Solano County
         which lies south and
         west of a line described
         as follows: Beginning at
         the intersection of the
         westerly boundary of
         Solano County and the \1/
         4\ section line running
         east and west through
         the center of Section
         34, T6N, R2W, M.D.B. &
         M., thence east along
         said \1/4\ section line
         to the east boundary of
         Section 36, T6N, R2W,
         thence south \1/2\ mile
         and east 2.0 miles, more
         or less, along the west
         and south boundary of
         Los Putos Rancho to the
         northwest corner of
         Section 4, T5N, R1W,
         thence east along a line
         common to T5N and T6N to
         the northeast corner of
         Section 3, T5N, R1E,
         thence south along
         section lines to the
         southeast corner of
         Section 10, T3N, R1E,
         thence east along
         section lines to the
         south \1/4\ corner of
         Section 8, T3N, R2E,
         thence east to the
         boundary between Solano
         and Sacramento Counties.

    Sonoma County (part):
        That portion of Sonoma
         County which lies south
         and east of a line
         described as follows:
         Beginning at the
         southeasterly corner of
         the Rancho Estero
         Americano, being on the
         boundary line between
         Marin and Sonoma
         Counties, California;
         thence running northerly
         along the easterly
         boundary line of said
         Rancho Estero Americano
         to the northeasterly
         corner thereof, being an
         angle corner in the
         westerly boundary line
         of Rancho Canada de
         Jonive; thence running
         along said boundary of
         Rancho Canada de Jonive
         westerly, northerly and
         easterly to its
         intersection with the
         easterly line of Graton
         Road; thence running
         along the easterly and
         southerly line of Graton
         Road, northerly and
         easterly to its
         intersection with the
         easterly line of
         Sullivan Road; thence
         running northerly along
         said easterly line of
         Sullivan Road to the
         southerly line of Green
         Valley Road; thence
         running easterly along
         the said southerly line
         of Green Valley Road and
         easterly along the
         southerly line of State
         Highway 116, to the
         westerly line of Vine
         Hill Road; thence
         Running along the
         westerly and northerly
         line of Vine Hill Road,
         northerly and easterly
         to its intersection with
         the westerly line of
         Laguna Road; thence
         running northerly along
         the westerly line of
         Laguna Road and the
         northerly projection
         thereof to the northerly
         line of Trenton Road;
         thence running westerly
         along the northerly line
         of said Trenton Road to
         the easterly line of
         Trenton-Healdsburg Road;
         thence running northerly
         along said easterly line
         of Trenton-Healdsburg
         Road to the easterly
         line of Eastside Road;
         thence running northerly
         along said easterly line
         of Eastside Road to its
         intersection with the
         southerly line of Rancho
         Sotoyome; thence running
         easterly along said
         southerly line of Rancho
         Sotoyome to its
         intersection with the
         Township line common to
         Townships 8 and 9 North,
         M.D.M.; thence running
         easterly along said
         township line to its
         intersection with the
         boundary line between
         Sonoma and Napa
         Counties.
    Federated Indians of Graton
     Rancheria.
    Lytton Rancheria of
     California.
San Joaquin Valley, CA...........  ...........  Nonattainment............  ...........  Extreme.
    Fresno County.
    Kern County (part):
        That portion of Kern
         County which lies west
         and north of a line
         described as follows:
         Beginning at the Kern-
         Los Angeles County
         boundary and running
         north and east along the
         northwest boundary of
         the Rancho La Libre Land
         Grant to the point of
         intersection with the
         range line common to R.
         16 W and R. 17 W, San
         Bernardino Base and
         Meridian; north along
         the range line to the
         point of intersection
         with the Rancho El Tejon
         Land Grant boundary;
         then southeast,
         northeast, and northwest
         along the boundary of
         the Rancho El Tejon Land
         Grant to the northwest
         corner of S 3, T. 11 N,
         R. 17 W; then west 1.2
         miles; then north to the
         Rancho El Tejon Land
         Grant boundary; then
         northwest along the
         Rancho El Tejon line to
         the southeast corner of
         S 34, T. 32 S, R. 30 E,
         Mount Diablo Base and
         Meridian; then north to
         the northwest corner of
         S 35, T. 31 S, R. 30 E;
         then northeast along the
         boundary of the Rancho
         El Tejon Land Grant to
         the southwest corner of
         S 18, T. 31 S, R. 31 E;
         then east to the
         southeast corner of S
         13, T. 31 S, R. 31 E;
         then north along the
         range line common to R.
         31 E and R. 32 E, Mount
         Diablo Base and
         Meridian, to the
         northwest corner of S 6,
         T. 29 S, R. 32 E; then
         east to the southwest
         corner of S 31, T. 28 S,
         R. 32 E; then north
         along the range line
         common to R. 31 E and R.
         32 E to the northwest
         corner of S 6, T. 28 S,
         R. 32 E, then west to
         the southeast corner of
         S 36, T. 27 S, R. 31 E,
         then north along the
         range line common to R.
         31 E and R. 32 E to the
         Kern-Tulare County
         boundary.
    Kings County.
    Madera County.
    Merced County.
    San Joaquin County.
    Stanislaus County.
    Tulare County:
        Big Sandy Rancheria of
         Western Mono Indians of
         California.
        Cold Springs Rancheria of
         Mono Indians of
         California.
        Northfork Rancheria of
         Mono Indians of
         California.
        Picayune Rancheria of
         Chukchansi Indians of
         California.
        Santa Rosa Indian
         Community of the Santa
         Rosa Rancheria.
        Table Mountain Rancheria
         of California.
        Tule River Indian Tribe
         of the Tule River
         Reservation.
San Luis Obispo (Eastern part),    ...........  Nonattainment............  ...........  Marginal.
 CA.
    San Luis Obispo County
     (part):
        That portion of San Luis
         Obispo County that lies
         east of a line described
         as follows: Beginning at
         the San Luis Obispo
         County/Santa Barbara
         County boundary and
         running north along 120
         degrees 24 minutes
         longitude to the
         intersection with 35
         degrees 27 minutes
         latitude; east along 35
         degrees 27 minutes
         latitude to the
         intersection with 120
         degrees 18 minutes
         longitude; then north
         along 120 degrees 18
         minutes longitude to the
         San Luis Obispo County/
         Monterey County
         boundary.
Sutter Buttes, CA................  ...........  Nonattainment............  ...........  Marginal.
    Sutter County (part):
        That portion of the
         Sutter Buttes mountain
         range at or above 2,000
         feet in elevation.
Tuolumne County, CA..............  ...........  Nonattainment............  ...........  Marginal.
    Tuolumne County:
        Chicken Ranch Rancheria
         of Me-Wuk Indians of
         California.

        Tuolumne Band of Me-Wuk
         Indians of the Tuolumne
         Rancheria of California.
Tuscan Buttes, CA................  ...........  Nonattainment............  ...........  Marginal (Rural
                                                                                Transport).
    Tehama County (part):
        Those portions of the
         immediate Tuscan Buttes
         area at or above 1,800
         feet in elevation.
Ventura County, CA...............  ...........  Nonattainment............  ...........  Serious.
    Ventura County (part):
        That part of Ventura
         County excluding the
         Channel Islands of
         Anacapa and San Nicolas
         Islands.
Morongo Band of Mission Indians    ...........  Nonattainment............  ...........  Serious.
 \4\.
Pechanga Band of Luise[ntilde]o    ...........  Nonattainment............  ...........  Marginal.
 Mission Indians of the Pechanga
 Reservation.
    Includes the main body of the
     contiguous Pechanga Band
     Reservation and the
     noncontiguous area known as
     Pu'eskaMountain, excluding
     non-contiguous tribal lands
     in the Los Angeles-South
     Coast Air Basin, CA
     (Meadowbrook parcel).\3\
Rest of State:
    Colusa County................  ...........  Attainment/Unclassifiable
    Eastern Nevada County........  ...........  Attainment/Unclassifiable
        Nevada County (part)
         remainder.
    Eastern Riverside County.....  ...........  Attainment/Unclassifiable
        Riverside County (part)
         remainder.
    Glenn County.................  ...........  Attainment/Unclassifiable
    Inyo County..................  ...........  Attainment/Unclassifiable
    Lake County..................      1/16/18  Attainment/Unclassifiable
    Lake Tahoe Air Basin.........  ...........  Attainment/Unclassifiable
        El Dorado County (part)
         remainder.
        Placer County (part)
         remainder.
    North Central Coast Air Basin  ...........  Attainment/Unclassifiable
        Monterey County.
        San Benito County.
        Santa Cruz County.
    North Coast Air Basin........  ...........  Attainment/Unclassifiable
        Del Norte County.........      1/16/18
        Humboldt County..........      1/16/18
        Mendocino County.
        Sonoma County (part)
         remainder.
        Trinity County.
    Northeast Plateau Air Basin..      1/16/18  Attainment/Unclassifiable
        Lassen County.
        Modoc County.
        Siskiyou County.
    Northeastern Kern County.....  ...........  Attainment/Unclassifiable
        Kern County (part)
         remainder.
    Northeast San Bernardino       ...........  Attainment/Unclassifiable
     County.
        San Bernardino County
         (part) remainder.
    Northern Channel Islands.....  ...........  Attainment/Unclassifiable
        The Channel Islands
         located in the South
         Central Coast Air Basin:
         Anacapa, San Miguel, San
         Nicholas, Santa Barbara,
         Santa Cruz, and Santa
         Rosa Islands.
    Northern Great Basin Valleys   ...........  Attainment/Unclassifiable
     Air Basin.
        Alpine County.
        Mono County.
    Northern Mountain Counties...  ...........  Attainment/Unclassifiable
        Plumas County.
        Sierra County.
    Santa Barbara County (part)    ...........  Attainment/Unclassifiable
     remainder.
        That part of Santa
         Barbara County excluding
         the Channel Islands of
         San Miguel, Santa
         Barbara, Santa Cruz, and
         Santa Rosa Islands.
    Shasta County................  ...........  Attainment/Unclassifiable
    Sutter and Yuba Counties.....  ...........  Attainment/Unclassifiable
        Sutter County (part)
         remainder.

        Yuba County.
    Tehama County (part)           ...........  Attainment/Unclassifiable
     remainder.
    Western San Luis Obispo        ...........  Attainment/Unclassifiable
     County.
        San Luis Obispo County
         (part) remainder.
----------------------------------------------------------------------------------------------------------------
\1\ Includes any Indian country in each county or area, unless otherwise specified. EPA is not determining the
  boundaries of any area of Indian country in this table, including any area of Indian country located in the
  larger designation area. The inclusion of any Indian country in the designation area is not a determination
  that the state has regulatory authority under the Clean Air Act for such Indian country.
\2\ This date is August 3, 2018, unless otherwise noted.
\3\ See Section 23.0 of the EPA's technical support document for California, titled ``California Final Area
  Designations for the 2015 Ozone National Ambient Air Quality Standards Technical Support Document (TSD),'' for
  more information and maps showing the locations of the main body of the reservation and the non-contiguous
  Pu'eska Mountain and Meadowbrook lands (available in Docket ID: EPA-HQ-OAR-2017-0548).
\4\ See Section 22.0 of the EPA's technical support document for California, titled ``California Final Area
  Designations for the 2015 Ozone National Ambient Air Quality Standards Technical Support Document (TSD),'' for
  more information and maps showing the boundaries of the nonattainment area (available in Docket ID: EPA-HQ-OAR-
  2017-0548).

* * * * *

0
5. Section 81.306 is amended by revising the table titled ``Colorado--
2015 8-Hour Ozone NAAQS (Primary and Secondary)'' to read as follows:

Sec.  81.306  Colorado.

* * * * *

                                        Colorado--2015 8-Hour Ozone NAAQS
                                             [Primary and Secondary]
----------------------------------------------------------------------------------------------------------------
                                                 Designation                           Classification
        Designated area 1         ------------------------------------------------------------------------------
                                      Date 2               Type               Date 2              Type
----------------------------------------------------------------------------------------------------------------
Denver Metro/North Front Range,    ...........  Nonattainment............  ...........  Marginal.
 CO.
    Adams County.
    Arapahoe County.
    Boulder County.
    Broomfield County.
    Denver County.
    Douglas County.
    Jefferson County.
    Larimer County (part):
        Including the portion of
         Rocky Mountain National
         Park therein and that
         portion of the county
         that lies south of a
         line described as
         follows: Beginning at a
         point on Larimer
         County's eastern
         boundary and Weld
         County's western
         boundary intersected by
         40 degrees, 42 minutes,
         and 47.1 seconds north
         latitude, proceed west
         to a point defined by
         the intersection of 40
         degrees, 42 minutes,
         47.1 seconds north
         latitude and 105
         degrees, 29 minutes, and
         40.0 seconds west
         longitude, thence
         proceed south on 105
         degrees, 29 minutes,
         40.0 seconds west
         longitude to the inter-
         section with 40 degrees,
         33 minutes and 17.4
         seconds north latitude,
         thence proceed west on
         40 degrees, 33 minutes,
         17.4 seconds north
         latitude until this line
         intersects Larimer
         County's western
         boundary and Grand
         County's eastern
         boundary.
    Weld County (part):
        That portion of the
         county that lies south
         of a line described as
         follows: Beginning at a
         point on Weld County's
         eastern boundary and
         Logan County's western
         boundary intersected by
         40 degrees, 42 minutes,
         47.1 seconds north
         latitude, proceed west
         on 40 degrees, 42
         minutes, 47.1 seconds
         north latitude until
         this line intersects
         Weld County's western
         boundary and Larimer
         County's eastern
         boundary.
Alamosa County...................      1/16/18  Attainment/Unclassifiable
Archuleta County.................      1/16/18  Attainment/Unclassifiable
Baca County......................      1/16/18  Attainment/Unclassifiable
Bent County......................      1/16/18  Attainment/Unclassifiable
Chaffee County...................      1/16/18  Attainment/Unclassifiable
Cheyenne County..................      1/16/18  Attainment/Unclassifiable
Clear Creek County...............  ...........  Attainment/Unclassifiable
Conejos County...................      1/16/18  Attainment/Unclassifiable
Costilla County..................      1/16/18  Attainment/Unclassifiable
Crowley County...................      1/16/18  Attainment/Unclassifiable
Custer County....................      1/16/18  Attainment/Unclassifiable

Delta County.....................      1/16/18  Attainment/Unclassifiable
Dolores County...................      1/16/18  Attainment/Unclassifiable
Eagle County.....................      1/16/18  Attainment/Unclassifiable
Elbert County....................  ...........  Attainment/Unclassifiable
El Paso County...................  ...........  Attainment/Unclassifiable
Fremont County...................      1/16/18  Attainment/Unclassifiable
Garfield County..................  ...........  Attainment/Unclassifiable
Gilpin County....................  ...........  Attainment/Unclassifiable
Grand County.....................  ...........  Attainment/Unclassifiable
Gunnison County..................      1/16/18  Attainment/Unclassifiable
Hinsdale County..................      1/16/18  Attainment/Unclassifiable
Huerfano County..................      1/16/18  Attainment/Unclassifiable
Jackson County...................  ...........  Attainment/Unclassifiable
Kiowa County.....................      1/16/18  Attainment/Unclassifiable
Kit Carson County................      1/16/18  Attainment/Unclassifiable
Lake County......................      1/16/18  Attainment/Unclassifiable
La Plata County..................      1/16/18  Attainment/Unclassifiable
Larimer County (part remainder)..  ...........  Attainment/Unclassifiable
Las Animas County................      1/16/18  Attainment/Unclassifiable
Lincoln County...................      1/16/18  Attainment/Unclassifiable
Logan County.....................      1/16/18  Attainment/Unclassifiable
Mesa County......................      1/16/18  Attainment/Unclassifiable
Mineral County...................      1/16/18  Attainment/Unclassifiable
Moffat County....................  ...........  Attainment/Unclassifiable
Montezuma County.................      1/16/18  Attainment/Unclassifiable
Montrose County..................      1/16/18  Attainment/Unclassifiable
Morgan County....................      1/16/18  Attainment/Unclassifiable
Otero County.....................      1/16/18  Attainment/Unclassifiable
Ouray County.....................      1/16/18  Attainment/Unclassifiable
Park County......................  ...........  Attainment/Unclassifiable
Phillips County..................      1/16/18  Attainment/Unclassifiable
Pitkin County....................      1/16/18  Attainment/Unclassifiable
Prowers County...................      1/16/18  Attainment/Unclassifiable
Pueblo County....................      1/16/18  Attainment/Unclassifiable
Rio Blanco County................  ...........  Attainment/Unclassifiable
Rio Grande County................      1/16/18  Attainment/Unclassifiable
Routt County.....................      1/16/18  Attainment/Unclassifiable
Saguache County..................      1/16/18  Attainment/Unclassifiable
San Juan County..................      1/16/18  Attainment/Unclassifiable

San Miguel County................      1/16/18  Attainment/Unclassifiable
Sedgwick County..................      1/16/18  Attainment/Unclassifiable
Summit County....................      1/16/18  Attainment/Unclassifiable
Teller County....................  ...........  Attainment/Unclassifiable
Washington County................      1/16/18  Attainment/Unclassifiable
Weld County (part) remainder.....  ...........  Attainment/Unclassifiable
Yuma County......................      1/16/18  Attainment/Unclassifiable
----------------------------------------------------------------------------------------------------------------
\1\ Includes any Indian country in each county or area, unless otherwise specified. EPA is not determining the
  boundaries of any area of Indian country in this table, including any area of Indian country located in the
  larger designation area. The inclusion of any Indian country in the designation area is not a determination
  that the state has regulatory authority under the Clean Air Act for such Indian country.
\2\ This date is August 3, 2018, unless otherwise noted.

* * * * *

0
6. Section 81.307 is amended by adding a new table titled
``Connecticut--2015 8-Hour Ozone NAAQS (Primary and Secondary)''
following the table titled ``Connecticut--2008 8-Hour Ozone NAAQS
(Primary and Secondary)'' to read as follows:

Sec.  81.307  Connecticut.

* * * * *

                                      Connecticut--2015 8-Hour Ozone NAAQS
                                             [Primary and Secondary]
----------------------------------------------------------------------------------------------------------------
                                                 Designation                           Classification
        Designated area 1         ------------------------------------------------------------------------------
                                      Date 2               Type               Date 2              Type
----------------------------------------------------------------------------------------------------------------
Greater Connecticut, CT..........  ...........  Nonattainment............  ...........  Marginal.
    Hartford County.
    Litchfield County.
    New London County.
    Tolland County.
    Windham County.
New York-Northern New Jersey-Long  ...........  Nonattainment............  ...........  Moderate.
 Island, NY-NJ-CT.
    Fairfield County.
    Middlesex County.
    New Haven County.
----------------------------------------------------------------------------------------------------------------
\1\ Includes any Indian country in each county or area, unless otherwise specified. EPA is not determining the
  boundaries of any area of Indian country in this table, including any area of Indian country located in the
  larger designation area. The inclusion of any Indian country in the designation area is not a determination
  that the state has regulatory authority under the Clean Air Act for such Indian country.
\2\ This date is August 3, 2018, unless otherwise noted.

* * * * *

0
7. Section 81.308 is amended by adding a new table titled ``Delaware--
2015 8-Hour Ozone NAAQS (Primary and Secondary)'' following the table
titled ``Delaware--2008 8-Hour Ozone NAAQS (Primary and Secondary)'' to
read as follows:

Sec.  81.308   Delaware.

* * * * *

                                        Delaware--2015 8-Hour Ozone NAAQS
                                             [Primary and Secondary]
----------------------------------------------------------------------------------------------------------------
                                                 Designation                           Classification
        Designated area 1         ------------------------------------------------------------------------------
                                      Date 2               Type               Date 2              Type
----------------------------------------------------------------------------------------------------------------
Philadelphia-Wilmington-Atlantic   ...........  Nonattainment............  ...........  Marginal.
 City, PA-NJ-MD-DE.
    New Castle County.
Kent County......................  ...........  Attainment/Unclassifiable
Sussex County....................  ...........  Attainment/Unclassifiable
----------------------------------------------------------------------------------------------------------------
\1\ Includes any Indian country in each county or area, unless otherwise specified. EPA is not determining the
  boundaries of any area of Indian country in this table, including any area of Indian country located in the
  larger designation area. The inclusion of any Indian country in the designation area is not a determination
  that the state has regulatory authority under the Clean Air Act for such Indian country.
\2\ This date is August 3, 2018, unless otherwise noted.

* * * * *

0
8. Section 81.309 is amended by adding a new table titled ``District of
Columbia--2015 8-Hour Ozone NAAQS (Primary and Secondary)'' following
the table titled ``District of Columbia--2008 8-Hour Ozone NAAQS
(Primary and Secondary)'' to read as follows:

Sec.  81.309  District of Columbia.

* * * * *

                                  District of Columbia--2015 8-Hour Ozone NAAQS
                                             [Primary and Secondary]
----------------------------------------------------------------------------------------------------------------
                                                 Designation                           Classification
        Designated area 1         ------------------------------------------------------------------------------
                                      Date 2               Type               Date 2              Type
----------------------------------------------------------------------------------------------------------------
Washington, DC-MD-VA.............  ...........  Nonattainment............  ...........  Marginal.
    District of Columbia.
----------------------------------------------------------------------------------------------------------------
\1\ Includes any Indian country in each county or area, unless otherwise specified. EPA is not determining the
  boundaries of any area of Indian country in this table, including any area of Indian country located in the
  larger designation area. The inclusion of any Indian country in the designation area is not a determination
  that the state has regulatory authority under the Clean Air Act for such Indian country.
\2\ This date is August 3, 2018, unless otherwise noted.

* * * * *

0
9. Section 81.310 is amended by revising the table titled ``Florida--
2015 8-Hour Ozone NAAQS (Primary and Secondary)'' to read as follows:

Sec.  81.310  Florida.

* * * * *

                                        Florida--2015 8-Hour Ozone NAAQS
                                             [Primary and Secondary]
----------------------------------------------------------------------------------------------------------------
                                                 Designation                           Classification
        Designated area 1         ------------------------------------------------------------------------------
                                      Date 2               Type                Date               Type
----------------------------------------------------------------------------------------------------------------
Jacksonville, FL.................  ...........  Unclassifiable...........
    Duval County.
Alachua County...................      1/16/18  Attainment/Unclassifiable
Baker County.....................  ...........  Attainment/Unclassifiable
Bay County.......................      1/16/18  Attainment/Unclassifiable
Bradford County..................      1/16/18  Attainment/Unclassifiable
Brevard County...................      1/16/18  Attainment/Unclassifiable
Broward County...................      1/16/18  Attainment/Unclassifiable
Calhoun County...................      1/16/18  Attainment/Unclassifiable
Charlotte County.................      1/16/18  Attainment/Unclassifiable
Citrus County....................      1/16/18  Attainment/Unclassifiable
Clay County......................  ...........  Attainment/Unclassifiable
Collier County...................      1/16/18  Attainment/Unclassifiable
Columbia County..................      1/16/18  Attainment/Unclassifiable
DeSoto County....................      1/16/18  Attainment/Unclassifiable
Dixie County.....................      1/16/18  Attainment/Unclassifiable
Escambia County..................      1/16/18  Attainment/Unclassifiable
Flagler County...................      1/16/18  Attainment/Unclassifiable
Franklin County..................      1/16/18  Attainment/Unclassifiable
Gadsden County...................      1/16/18  Attainment/Unclassifiable
Gilchrist County.................      1/16/18  Attainment/Unclassifiable
Glades County....................      1/16/18  Attainment/Unclassifiable
Gulf County......................      1/16/18  Attainment/Unclassifiable
Hamilton County..................      1/16/18  Attainment/Unclassifiable
Hardee County....................      1/16/18  Attainment/Unclassifiable
Hendry County....................      1/16/18  Attainment/Unclassifiable
Hernando County..................      1/16/18  Attainment/Unclassifiable

Highlands County.................      1/16/18  Attainment/Unclassifiable
Hillsborough County..............      1/16/18  Attainment/Unclassifiable
Holmes County....................      1/16/18  Attainment/Unclassifiable
Indian River County..............      1/16/18  Attainment/Unclassifiable
Jackson County...................      1/16/18  Attainment/Unclassifiable
Jefferson County.................      1/16/18  Attainment/Unclassifiable
Lafayette County.................      1/16/18  Attainment/Unclassifiable
Lake County......................      1/16/18  Attainment/Unclassifiable
Lee County.......................      1/16/18  Attainment/Unclassifiable
Leon County......................      1/16/18  Attainment/Unclassifiable
Levy County......................      1/16/18  Attainment/Unclassifiable
Liberty County...................      1/16/18  Attainment/Unclassifiable
Madison County...................      1/16/18  Attainment/Unclassifiable
Manatee County...................      1/16/18  Attainment/Unclassifiable
Marion County....................      1/16/18  Attainment/Unclassifiable
Martin County....................      1/16/18  Attainment/Unclassifiable
Miami-Dade County................      1/16/18  Attainment/Unclassifiable
Monroe County....................      1/16/18  Attainment/Unclassifiable
Nassau County....................  ...........  Attainment/Unclassifiable
Okaloosa County..................      1/16/18  Attainment/Unclassifiable
Okeechobee County................      1/16/18  Attainment/Unclassifiable
Orange County....................      1/16/18  Attainment/Unclassifiable
Osceola County...................      1/16/18  Attainment/Unclassifiable
Palm Beach County................      1/16/18  Attainment/Unclassifiable
Pasco County.....................      1/16/18  Attainment/Unclassifiable
Pinellas County..................      1/16/18  Attainment/Unclassifiable
Polk County......................      1/16/18  Attainment/Unclassifiable
Putnam County....................  ...........  Attainment/Unclassifiable
St. Johns County.................  ...........  Attainment/Unclassifiable
St. Lucie County.................      1/16/18  Attainment/Unclassifiable
Santa Rosa County................      1/16/18  Attainment/Unclassifiable
Sarasota County..................      1/16/18  Attainment/Unclassifiable
Seminole County..................      1/16/18  Attainment/Unclassifiable
Sumter County....................      1/16/18  Attainment/Unclassifiable
Suwannee County..................      1/16/18  Attainment/Unclassifiable
Taylor County....................      1/16/18  Attainment/Unclassifiable
Union County.....................      1/16/18  Attainment/Unclassifiable
Volusia County...................      1/16/18  Attainment/Unclassifiable
Wakulla County...................      1/16/18  Attainment/Unclassifiable

Walton County....................      1/16/18  Attainment/Unclassifiable
Washington County................      1/16/18  Attainment/Unclassifiable
----------------------------------------------------------------------------------------------------------------
\1\ Includes any Indian country in each county or area, unless otherwise specified. EPA is not determining the
  boundaries of any area of Indian country in this table, including any area of Indian country located in the
  larger designation area. The inclusion of any Indian country in the designation area is not a determination
  that the state has regulatory authority under the Clean Air Act for such Indian country.
\2\ This date is August 3, 2018, unless otherwise noted.

* * * * *

0
10. Section 81.311 is amended by revising the table titled ``Georgia--
2015 8-Hour Ozone NAAQS (Primary and Secondary)'' to read as follows:

Sec.  81.311  Georgia.

* * * * *

                                        Georgia--2015 8-Hour Ozone NAAQS
                                             [Primary and Secondary]
----------------------------------------------------------------------------------------------------------------
                                                 Designation                           Classification
        Designated area 1         ------------------------------------------------------------------------------
                                      Date 2               Type               Date 2              Type
----------------------------------------------------------------------------------------------------------------
Atlanta, GA......................  ...........  Nonattainment............  ...........  Marginal.
    Bartow County.
    Clayton County.
    Cobb County.
    DeKalb County.
    Fulton County.
    Gwinnett County.
    Henry County.
Appling County...................      1/16/18  Attainment/Unclassifiable
Atkinson County..................      1/16/18  Attainment/Unclassifiable
Bacon County.....................      1/16/18  Attainment/Unclassifiable
Baker County.....................      1/16/18  Attainment/Unclassifiable
Baldwin County...................      1/16/18  Attainment/Unclassifiable
Banks County.....................      1/16/18  Attainment/Unclassifiable
Barrow County....................  ...........  Attainment/Unclassifiable
Ben Hill County..................      1/16/18  Attainment/Unclassifiable
Berrien County...................      1/16/18  Attainment/Unclassifiable
Bibb County......................      1/16/18  Attainment/Unclassifiable
Bleckley County..................      1/16/18  Attainment/Unclassifiable
Brantley County..................      1/16/18  Attainment/Unclassifiable
Brooks County....................      1/16/18  Attainment/Unclassifiable
Bryan County.....................      1/16/18  Attainment/Unclassifiable
Bulloch County...................      1/16/18  Attainment/Unclassifiable
Burke County.....................      1/16/18  Attainment/Unclassifiable
Butts County.....................  ...........  Attainment/Unclassifiable
Calhoun County...................      1/16/18  Attainment/Unclassifiable
Camden County....................  ...........  Attainment/Unclassifiable
Candler County...................      1/16/18  Attainment/Unclassifiable
Carroll County...................  ...........  Attainment/Unclassifiable
Catoosa County...................      1/16/18  Attainment/Unclassifiable
Charlton County..................      1/16/18  Attainment/Unclassifiable
Chatham County...................      1/16/18  Attainment/Unclassifiable

Chattahoochee County.............      1/16/18  Attainment/Unclassifiable
Chattooga County.................      1/16/18  Attainment/Unclassifiable
Cherokee County..................  ...........  Attainment/Unclassifiable
Clarke County....................  ...........  Attainment/Unclassifiable
Clay County......................      1/16/18  Attainment/Unclassifiable
Clinch County....................      1/16/18  Attainment/Unclassifiable
Coffee County....................      1/16/18  Attainment/Unclassifiable
Colquitt County..................      1/16/18  Attainment/Unclassifiable
Columbia County..................      1/16/18  Attainment/Unclassifiable
Cook County......................      1/16/18  Attainment/Unclassifiable
Coweta County....................  ...........  Attainment/Unclassifiable
Crawford County..................      1/16/18  Attainment/Unclassifiable