Document ID: EPA-R09-OAR-2012-0792-0008
Agency: epa
Document Type: Rule
Title: Approvals and Promulgations of Implementation Plans;Designation of Areas for Air Quality Planning Purposes: Nevada; Redesignation of Clark County to Attainment for the 1997 8-Hour Ozone Standard
Posted Date: 2013-01-08T05:00Z

[Federal Register Volume 78, Number 5 (Tuesday, January 8, 2013)]
[Rules and Regulations]
[Pages 1149-1153]
From the Federal Register Online via the Government Printing Office [www.gpo.gov]
[FR Doc No: 2013-00057]

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ENVIRONMENTAL PROTECTION AGENCY

40 CFR Parts 52 and 81

[EPA-R09-OAR-2012-0792; FRL-9766-9]

Approval and Promulgation of Implementation Plans and Designation 
of Areas for Air Quality Planning Purposes; State of Nevada; 
Redesignation of Clark County to Attainment for the 1997 8-Hour Ozone 
Standard

AGENCY: Environmental Protection Agency (EPA).

ACTION: Final rule.

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SUMMARY: EPA is taking final action to approve, as a revision of the 
Nevada state implementation plan, the State's plan for maintaining the 
1997 8-hour ozone standard in Clark County for ten years beyond 
redesignation, and the related motor vehicle emissions budgets, because 
they meet the applicable requirements for such plans and budgets. EPA 
is also taking final action to approve a request from the Nevada 
Division of Environmental Protection to redesignate the Clark County 
ozone nonattainment area to attainment for the 1997 8-hour ozone 
National Ambient Air Quality Standard because the area meets the 
statutory requirements for redesignation under the Clean Air Act.

DATES: Effective Date: This rule is effective on February 7, 2013.

ADDRESSES: EPA has established a docket for this action under Docket ID 
Number EPA-R09-OAR-2012-0792. Generally, documents in the docket for 
this action are available electronically at www.regulations.gov and in 
hard copy at EPA Region IX, 75 Hawthorne Street, San Francisco, 
California. While all documents in the docket are listed at 
www.regulations.gov, some information may be publicly available only at 
the hard copy location (e.g., copyrighted material, large maps), and 
some may not be publicly available in either location (e.g., 
confidential business information or ``CBI''). To inspect the hard copy 
materials, please schedule an appointment during normal business hours 
with the contact listed in the FOR FURTHER INFORMATION CONTACT section.

FOR FURTHER INFORMATION CONTACT: Ginger Vagenas, Air Planning Office 
(AIR-2), U.S. Environmental Protection Agency, Region IX, (415) 972-
3964, vagenas.ginger@epa.gov.

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

Table of Contents

I. Summary of Proposed Action
    A. Determination That the Area Has Attained the Applicable NAAQS
    B. The Area Must Have a Fully Approved SIP Meeting Requirements 
Applicable for Purposes of Redesignation Under Section 110 and Part 
D
    C. The Area Must Show the Improvement in Air Quality Is Due to 
Permanent and Enforceable Emissions Reductions
    D. The Area Must Have a Fully Approved Maintenance Plan Under 
CAA Section 175A
II. Public Comments
III. Final Action
IV. Statutory and Executive Order Reviews

I. Summary of Proposed Action

    On November 13, 2012 (77 FR 67600), we proposed to take several 
related actions. First, under Clean Air Act (CAA or ``Act'') section 
110(k)(3), EPA proposed to approve a submittal from the Nevada Division 
of Environmental Protection (NDEP) dated April 11, 2011 of Clark 
County's Ozone Redesignation Request and Maintenance Plan (March 2011) 
(``Clark County Ozone Maintenance Plan'' or ``Ozone Maintenance Plan'') 
as a revision to the Nevada state implementation plan (SIP).
    In connection with the Clark County Ozone Maintenance Plan, EPA 
proposed to find that the maintenance demonstration showing that the 
area will continue to attain the 1997 8-hour ozone national ambient air 
quality

[[Page 1150]]

standard (NAAQS or ``standard'') \1\ for 10 years beyond redesignation 
(i.e., through 2022), and the contingency provisions describing the 
actions that Clark County will take in the event of a future monitored 
violation, meet all applicable requirements for maintenance plans and 
related contingency provisions in CAA section 175A. EPA also proposed 
to approve the motor vehicle emissions budgets (MVEBs) in the Clark 
County Ozone Maintenance Plan because we found they met the applicable 
transportation conformity requirements under 40 CFR 93.118(e).
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    \1\ The 1997 8-hour ozone standard is 0.08 parts per million 
(ppm) averaged over an 8-hour time frame.
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    Second, under CAA section 107(d)(3)(D), EPA proposed to approve 
NDEP's request that accompanied the submittal of the maintenance plan 
to redesignate the Clark County 8-hour ozone nonattainment area \2\ to 
attainment for the 1997 8-hour ozone NAAQS. We did so based on our 
conclusion that the area has met the five criteria for redesignation 
under CAA section 107(d)(3)(E). Our conclusion in this regard was based 
on our determination that the area has attained the 1997 8-hour ozone 
NAAQS, that relevant portions of the Nevada SIP are fully approved, 
that the improvement in air quality is due to permanent and enforceable 
reductions in emissions, that Nevada has met all requirements 
applicable to the Clark County 8-hour ozone nonattainment area with 
respect to section 110 and part D of the CAA, and based on our approval 
as part of this action of the Clark County Ozone Maintenance Plan.
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    \2\ The boundaries of the Clark County ozone nonattainment area 
are defined in 40 CFR 81.329. Specifically, the area is defined as: 
``That portion of Clark County that lies in hydrographic areas 164A, 
164B, 165, 166, 167, 212, 213, 214, 216, 217, and 218 but excluding 
the Moapa River Indian Reservation and the Fort Mojave Indian 
Reservation.'' The area includes a significant portion of the 
unincorporated portions of central and southern Clark County, as 
well as the cities of Las Vegas, Henderson, North Las Vegas, and 
Boulder City.
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    For the purposes of this final rule, we have summarized the basis 
for our findings in connection with the proposed approvals of the Ozone 
Maintenance Plan and redesignation request. For a more detailed 
explanation as well as background information concerning the 1997 8-
hour ozone NAAQS, the CAA requirements for redesignation, and the ozone 
planning history of Clark County, please see our November 13, 2012 
proposed rule.

A. Determination That the Area Has Attained the Applicable NAAQS

    Prior to redesignating an area to attainment, CAA section 
107(d)(3)(E)(i) requires that we determine that the area has attained 
the NAAQS. For our proposed rule, consistent with the requirements 
contained in 40 CFR part 50, EPA reviewed the ozone ambient air 
monitoring data for the monitoring period from 2009 through 2011, as 
recorded in the EPA Air Quality System (AQS) database, and determined, 
based on the complete, quality-assured data for 2009-2011, that the 
Clark County 8-hour ozone nonattainment area has attained the 1997 8-
hour ozone standard because the design value \3\ is less than 0.084 
ppm. We also reviewed preliminary data from 2012 and found that it was 
consistent with continued attainment of the standard in the Clark 
County 8-hour ozone nonattainment area. See pages 67602-67604 of our 
November 13, 2012 proposed rule.
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    \3\ The design value for the 8-hour standard is the three-year 
average of the annual fourth-highest daily maximum 8-hour ozone 
concentration at the worst-case monitoring site in the area.
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B. The Area Must Have a Fully Approved SIP Meeting Requirements 
Applicable for Purposes of Redesignation Under Section 110 and Part D

    Sections 107(d)(3)(E)(ii) and (v) of the CAA require EPA to 
determine that the area has a fully approved applicable SIP under 
section 110(k) that meets all applicable requirements under section 110 
and part D for the purposes of redesignation. For the reasons 
summarized below, we found that the Clark County 8-hour ozone 
nonattainment area has a fully approved applicable SIP under section 
110(k) that meets all applicable requirements under section 110 and 
part D for the purposes of redesignation. See pages 67604-67607 of our 
November 13, 2012 proposed rule.
    With respect to section 110 of the CAA (General SIP Requirements), 
we concluded that NDEP and Clark County have met all SIP requirements 
for Clark County applicable for purposes of redesignation. Our 
conclusion in this regard was based on our review of the Clark County 
portion of the Nevada SIP.
    With respect to part D (of title I of the CAA), we reviewed the 
Clark County portion of the Nevada SIP for compliance with applicable 
requirements under both subparts 1 and 2.\4\
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    \4\ Subpart 1 contains general, less prescriptive requirements 
for all nonattainment areas of any pollutant, including ozone, 
governed by a NAAQS. Subpart 2 contains additional, more specific 
requirements for ozone nonattainment areas classified under subpart 
2.
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    First, we noted that EPA previously determined that the Clark 
County 8-hour ozone nonattainment area attained the 1997 8-hour ozone 
NAAQS based on 2007-2009 ozone data (76 FR 17343, March 29, 2011), and 
thereby suspended, under 40 CFR 51.918, the obligation on the State of 
Nevada to submit an attainment demonstration and associated reasonably 
available control measures (RACM), a reasonable further progress (RFP) 
plan, contingency measures and other planning requirements related to 
attainment of the 1997 8-hour ozone NAAQS. As such, we explained that 
the State's compliance status with the attainment-related SIP 
requirements under subpart 1 was not relevant for the purposes of 
evaluating the State's redesignation request.
    As to the other applicable subpart 1 requirements, we found that:
     The emissions inventory requirements of CAA section 
172(c)(3) would be met by our approval of the Clark County Ozone 
Maintenance Plan and related emissions inventories for volatile organic 
compounds (VOC) and oxides of nitrogen (NOX);
     A fully-approved nonattainment New Source Review (NSR) 
program was not a prerequisite to redesignation in this instance 
because the Clark County Ozone Maintenance Plan demonstrates 
maintenance of the standard without implementation of nonattainment 
NSR; moreover, after redesignation, sources under NDEP jurisdiction 
would be subject to the federal PSD program and sources under Clark 
County jurisdiction would be subject to an EPA-approved PSD program 
that is deficient in certain respects but not in ways that would 
interfere with maintenance of the ozone standard; and
     Clark County and the State previously met the requirements 
for transportation conformity SIPs under section 176(c) (see EPA's 
approval of Clark County's transportation conformity SIP at 73 FR 
66182, November 7, 2008).\5\
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    \5\ In any event, EPA believes it is reasonable to interpret the 
conformity requirements as not applicable for purposes of evaluating 
a redesignation request under section 107(d)(3)(E). See Wall v. EPA, 
265 F.3d 426, 439 (6th Cir. 2001) upholding this interpretation.
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    With respect to the requirements associated with subpart 2, we 
noted that the Clark County 8-hour ozone nonattainment area was 
initially designated nonattainment under subpart 1 of the CAA, but was 
subsequently classified as marginal nonattainment for the 1997 8-hour 
ozone standard under

[[Page 1151]]

subpart 2 of part D of the CAA in May 2012, i.e., after NDEP's 
submittal of the redesignation request. Under EPA's longstanding policy 
of evaluating requirements in accordance with the requirements due at 
the time a redesignation request is submitted and in consideration of 
the inequity of applying retroactively any requirements that might in 
the future be applied, we determined that the requirements under 
subpart 2 need not be addressed as a condition of redesignation.

C. The Area Must Show the Improvement in Air Quality Is Due to 
Permanent and Enforceable Emissions Reductions

    Section 107(d)(3)(E)(iii) precludes redesignation of a 
nonattainment area to attainment unless EPA determines that the 
improvement in air quality is due to permanent and enforceable 
reductions in emissions resulting from implementation of the applicable 
SIP and applicable Federal air pollution control regulations and other 
permanent and enforceable regulations. Based on our review of the 
control measures credited in the Clark County Ozone Maintenance Plan as 
providing the emissions reductions sufficient to attain the 1997 8-hour 
ozone NAAQS in the Clark County 8-hour ozone nonattainment area through 
the year 2022, and based on our consideration of other factors such as 
weather patterns and economic activity, we found that the improvement 
in air quality in the Clark County 8-hour ozone nonattainment area is 
the result of permanent and enforceable emissions reductions from a 
combination of Federal vehicle and fuel measures and EPA-approved State 
and local control measures. See pages 670607-67608 of our November 13, 
2012 proposed rule.

D. The Area Must Have a Fully Approved Maintenance Plan Under CAA 
Section 175A

    Section 175A of the CAA sets forth the elements of a maintenance 
plan for areas seeking redesignation from nonattainment to attainment. 
As explained in the proposed rule, we interpret this section of the Act 
to require, in general, the following core elements: Attainment 
inventory, maintenance demonstration, monitoring network, verification 
of continued attainment, and contingency plan. Based on our review and 
evaluation of the Ozone Maintenance Plan, we concluded that it 
contained the core elements and met the requirements of CAA section 
175A. See pages 67608-67613. Our conclusion was based on the following 
findings:
     The base year emissions inventories for 2008 are 
comprehensive, that the methods and assumptions used by Clark County 
Department of Air Quality (DAQ) to develop the 2008 emission inventory 
are reasonable, and that the inventories reasonably estimate actual 
ozone season emissions in an attainment year. Moreover, we found that 
the 2008 emissions inventories in the Ozone Maintenance Plan reflect 
the latest planning assumptions and emissions models available at the 
time the plan was developed, and provide a comprehensive and reasonably 
accurate basis upon which to forecast ozone precursor emissions for 
years 2015 and 2022;
     The projected VOC and NOX emissions estimates 
adequately account for projected area-wide growth, specific projects 
(including, among others, the Nellis Air Force Base F-35 beddown 
project), and emissions reduction credits (ERCs), and show that VOC and 
NOX emissions would remain well below the attainment levels 
throughout the 10-year maintenance period and thereby adequately 
demonstrate maintenance through that period;
     Clark County DAQ has committed to continue to operate the 
air quality monitoring network to verify the continued attainment of 
the 1997 8-hour ozone NAAQS ambient ozone monitoring; \6\
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    \6\ Although the Ozone Maintenance Plan is not explicit in this 
regard, we presume that Clark County DAQ's intention to continue 
operation of a monitoring network means that the agency intends to 
do so consistent with EPA's monitoring requirements in 40 CFR part 
58 (``Ambient Air Quality Surveillance'').
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     Clark County DAQ's commitment in the Ozone Maintenance 
Plan to the continued operation of an ozone monitoring network and the 
requirement that NDEP and Clark County DAQ must inventory emissions 
sources and report to EPA on a periodic basis \7\ would be sufficient 
for the purpose of verifying continued attainment; and
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    \7\ See 40 CFR part 51, subpart A (``Air Emissions Reporting 
Requirements'').
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     The contingency provisions of the Ozone Maintenance Plan 
clearly identify specific contingency measures, contain adequate 
tracking and triggering mechanisms to determine when contingency 
measures are needed, contain a sufficient description of the process of 
recommending and implementing contingency measures, and contain 
specific timelines for action, and would, therefore, be adequate to 
ensure prompt correction of a violation and comply with the 
contingency-related requirements under CAA section 175A(d).
    Lastly, we proposed to approve the motor vehicle emissions budgets 
(MVEBs) contained in the Ozone Maintenance Plan because we found that 
they meet the transportation conformity adequacy requirements under 40 
CFR 93.118(e)(4) and (5). In so proposing, we found that, among other 
things, the MVEBs, when considered with emissions from all other 
sources, would be consistent with maintenance of the 1997 8-hour ozone 
NAAQS in the Clark County 8-hour ozone nonattainment area.

II. Public Comments

    Our November 13, 2012 proposed rule provided for a 30-day comment 
period. We received comment letters in support of our proposed action 
from NDEP and the Washoe County Health District. In its comment letter, 
NDEP also noted that approval of the redesignation request for the 
Clark County 8-hour ozone nonattainment area will negate the need, that 
had been identified in EPA's proposed limited approval and limited 
disapproval of Clark County's revised NSR rules at 77 FR 43206, for a 
revision to NDEP's nonattainment NSR provisions at this time. We 
received no adverse comments in response to our November 13, 2012 
proposed rule.

III. Final Action

    Under CAA sections 110(k)(3) and 107(d)(3)(D), and for the reasons 
set forth in our proposed rule and summarized above, EPA is taking 
final action to approve NDEP's submittal dated April 11, 2011 of Clark 
County's Ozone Redesignation Request and Maintenance Plan (March 2011) 
(``Clark County Ozone Maintenance Plan'') as a revision to the Nevada 
SIP and to approve NDEP's request to redesignate the Clark County 8-
hour ozone nonattainment area to attainment for the 1997 8-hour ozone 
NAAQS. In connection with the Clark County Ozone Maintenance Plan, EPA 
finds that the maintenance demonstration showing that the area will 
continue to attain the 1997 8-hour ozone NAAQS for 10 years beyond 
redesignation (i.e., through 2022) and the contingency provisions 
describing the actions that Clark County will take in the event of a 
future monitored violation meet all applicable requirements for 
maintenance plans and related contingency provisions in CAA section 
175A. EPA is also approving the following motor vehicle emissions 
budgets (MVEBs) from the Clark County Ozone Maintenance Plan for 
transportation conformity purposes

[[Page 1152]]

because we find that they meet the applicable transportation conformity 
requirements under 40 CFR 93.118(e):

------------------------------------------------------------------------
                                          VOC (tpd,         NOX (tpd,
             Budget year               average summer    average summer
                                          weekday)          weekday)
------------------------------------------------------------------------
2008                                             65.08             68.46
2015                                             45.32             34.69
2022                                             36.71             23.15
------------------------------------------------------------------------

    These new MVEBs become effective on the date of publication of this 
final rule in the Federal Register (see 40 CFR 93.118(f)(2)) and must 
be used by U.S. Department of Transportation (DOT) and the Regional 
Transportation Commission of Southern Nevada (RTC) for future 
transportation conformity determinations for Clark County. The existing 
2008 VOC and NOX MVEBs from the Clark County Early Progress 
Plan,\8\ which EPA found adequate in 2009, are replaced by these 
budgets.
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    \8\ On July 28, 2008, NDEP submitted the 8-Hour Early Progress 
Plan for Clark County, Nevada (June 2008) to EPA as a revision to 
the Nevada SIP.
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    In connection with the redesignation request, EPA is taking final 
action to approve the request because we find that the area has met the 
five criteria for redesignation under CAA section 107(d)(3)(E). 
Specifically, we find that the area has attained the 1997 8-hour ozone 
NAAQS, that relevant portions of the Nevada SIP are fully approved, 
that the improvement in air quality is due to permanent and enforceable 
reductions in emissions, that Nevada has met all requirements 
applicable to the Clark County 8-hour ozone nonattainment area with 
respect to section 110 and part D of the CAA, and that the area has a 
fully approved maintenance plan meeting the requirements of section 
175A (i.e., the Clark County Ozone Maintenance Plan approved herein).

IV. Statutory and Executive Order Reviews

    Under the CAA, redesignation of an area to attainment under section 
107(d)(3)(E) and the accompanying approval of a maintenance plan under 
section 175A are actions that affect the status of a geographical area 
and do not impose any additional regulatory requirements on sources 
beyond those imposed by State law. Redesignation to attainment does not 
in and of itself create any new requirements, but rather results in the 
applicability of requirements contained in the CAA for areas that have 
been redesignated to attainment. Moreover, the Administrator is 
required to approve a SIP submission that complies with the provisions 
of the Act and applicable Federal regulations. 42 U.S.C. 7410(k); 40 
CFR 52.02(a). Thus, in reviewing SIP submissions, EPA's role is to 
approve State choices, provided that they meet the criteria of the 
Clean Air Act. Accordingly, these actions merely approve a State plan 
and redesignation request as meeting Federal requirements and do not 
impose additional requirements beyond those by State law. For these 
reasons, these actions:
     Are not a ``significant regulatory action'' subject to 
review by the Office of Management and Budget under Executive Order 
12866 (58 FR 51735, October 4, 1993);
     Do not impose an information collection burden under the 
provisions of the Paperwork Reduction Act (44 U.S.C. 3501 et seq.);
     Are certified as not having a significant economic impact 
on a substantial number of small entities under the Regulatory 
Flexibility Act (5 U.S.C. 601 et seq.);
     Do not contain any unfunded mandate or significantly or 
uniquely affect small governments, as described in the Unfunded 
Mandates Reform Act of 1995 (Pub. L. 104-4);
     Do not have Federalism implications as specified in 
Executive Order 13132 (64 FR 43255, August 10, 1999);
     Are not an economically significant regulatory action 
based on health or safety risks subject to Executive Order 13045 (62 FR 
19885, April 23, 1997);
     Are not a significant regulatory action subject to 
Executive Order 13211 (66 FR 28355, May 22, 2001);
     Are not subject to requirements of Section 12(d) of the 
National Technology Transfer and Advancement Act of 1995 (15 U.S.C. 272 
note) because application of those requirements would be inconsistent 
with the CAA; and
     Do not provide EPA with the discretionary authority to 
address disproportionate human health or environmental effects with 
practical, appropriate, and legally permissible methods under Executive 
Order 12898 (59 FR 7629, February 16, 1994).
    In addition, this rule does not have Tribal implications as 
specified by Executive Order 13175 (65 FR 67249, November 9, 2000), 
because the SIP is not approved to apply in Indian country located in 
the State, and EPA notes that it will not impose substantial direct 
costs on Tribal governments or preempt Tribal law. Nonetheless, EPA 
discussed the proposed action with the one Tribe, the Las Vegas Paiute 
Tribe, located within the Clark County 8-hour ozone nonattainment area. 
The Tribe has indicated that it concurs with the redesignation request.
    The Congressional Review Act, 5 U.S.C. 801 et seq., as added by the 
Small Business Regulatory Enforcement Fairness Act of 1996, generally 
provides that before a rule may take effect, the agency promulgating 
the rule must submit a rule report, which includes a copy of the rule, 
to each House of the Congress and to the Comptroller General of the 
United States. EPA will submit a report containing this action and 
other required information to the U.S. Senate, the U.S. House of 
Representatives, and the Comptroller General of the United States prior 
to publication of the rule in the Federal Register. A major rule cannot 
take effect until 60 days after it is published in the Federal 
Register. This action is not a ``major rule'' as defined by 5 U.S.C. 
804(2).
    Under section 307(b)(1) of the CAA, petitions for judicial review 
of this action must be filed in the United States Court of Appeals for 
the appropriate circuit by March 11, 2013. Filing a petition for 
reconsideration by the Administrator of this final rule does not affect 
the finality of this action for the purposes of judicial review nor 
does it extend the time within which a petition for judicial review may 
be filed, and shall not postpone the effectiveness of such rule or 
action. This action may not be challenged later in proceedings to 
enforce its requirements. (See section 307(b)(2)).

List of Subjects

40 CFR Part 52

    Environmental protection, Air pollution control, Incorporation by 
reference, Intergovernmental relations, Nitrogen dioxide, Ozone, 
Reporting and recordkeeping requirements, Volatile organic compounds.

40 CFR Part 81

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

    Dated: December 20, 2012.
Jared Blumenfeld,
Regional Administrator, Region IX.

    Chapter I, title 40 of the Code of Federal Regulations is amended 
as follows:

PART 52--[AMENDED]

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

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

Subpart DD--Nevada

0
2. Section 52.1470 in paragraph (e), the table is amended by adding an 
entry for ``Ozone Redesignation Request and

[[Page 1153]]

Maintenance Plan, Clark County, Nevada (March 2011)'' after the entry 
for ``Emissions Inventory for 1995'' to read as follows:

Sec.  52.1470  Identification of plan.

* * * * *
    (e) * * *

                         EPA-Approved Nevada Nonregulatory and Quasi-Regulatory Measures
----------------------------------------------------------------------------------------------------------------
                                        Applicable
      Name of SIP provision           geographic or          State       EPA approval date       Explanation
                                    nonattainment area  submittal date
----------------------------------------------------------------------------------------------------------------
                             Air Quality Implementation Plan for the State of Nevada
----------------------------------------------------------------------------------------------------------------
 
                                                  * * * * * * *
Ozone Redesignation Request and    Clark County,               4/11/11  [Insert Federal      Approval includes
 Maintenance Plan, Clark County,    Nevada: that                         Register page        appendices A, B,
 Nevada (March 2011).               portion of Clark                     number where the     and C. Relates to
                                    County that lies                     document begins] 1/  the 1997 8-hour
                                    in hydrographic                      8/13.                ozone standard.
                                    areas 164A, 164B,
                                    165, 166, 167,
                                    212, 213, 214,
                                    216, 217, and 218,
                                    but excluding the
                                    Moapa River Indian
                                    Reservation and
                                    the Fort Mohave
                                    Indian Reservation.
 
                                                  * * * * * * *
----------------------------------------------------------------------------------------------------------------

PART 81--[AMENDED]

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

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

Subpart C--[AMENDED]

0
4. Section 81.329 is amended in the table for ``Nevada--1997 8-Hour 
Ozone NAAQS (Primary and Secondary)'' by revising the entry for ``Las 
Vegas, NV'' to read as follows:

Sec.  81.329  Nevada.

* * * * *

                                         Nevada--1997 8-Hour Ozone NAAQS
                                             [Primary and secondary]
----------------------------------------------------------------------------------------------------------------
                                                 Designation a                          Classification
         Designated area         -------------------------------------------------------------------------------
                                       Date 1                 Type                 Date 1             Type
----------------------------------------------------------------------------------------------------------------
Las Vegas, NV: Clark County                 2/7/13  Attainment..............
 (part) That portion of Clark
 County that lies in
 hydrographic areas 164A, 164B,
 165, 166, 167, 212, 213, 214,
 216, 217, and 218, but
 excluding the Moapa River
 Indian Reservation and the Fort
 Mohave Indian Reservation\b\.
 
                                                  * * * * * * *
----------------------------------------------------------------------------------------------------------------
\a\ Includes Indian Country located in each county or area, except as otherwise specified.
\b\ The use of reservation boundaries for this designation is for purposes of CAA planning only and is not
  intended to be a federal determination of the exact boundaries of the reservations. Nor does the specific
  listing of the Tribes in this table confer, deny, or withdraw Federal recognition of any of the Tribes listed
  or not listed.
\1\ This date is June 15, 2004 unless otherwise noted.

[FR Doc. 2013-00057 Filed 1-7-13; 8:45 am]
BILLING CODE 6560-50-P