[Federal Register Volume 82, Number 218 (Tuesday, November 14, 2017)]
[Rules and Regulations]
[Pages 52651-52655]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2017-24537]


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ENVIRONMENTAL PROTECTION AGENCY

40 CFR Part 52

[EPA-R03-OAR-2016-0369; FRL-9970-70-Region 3]


Determination of Attainment by the Attainment Date for the 2008 
Ozone National Ambient Air Quality Standard; District of Columbia, 
Maryland, and Virginia; Washington, DC-MD-VA Area

AGENCY: Environmental Protection Agency (EPA).

ACTION: Final rule.

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SUMMARY: The Environmental Protection Agency (EPA) is making a final 
determination that the Washington, DC-MD-VA marginal ozone 
nonattainment area (the Washington Area) attained the 2008 ozone 
national ambient air quality standard (NAAQS) by the July 20, 2016 
attainment date. This determination is based on complete, certified, 
and quality assured ambient air quality monitoring data for the 
Washington Area for the 2013-2015 monitoring period. The effect of this 
determination of attainment is that the Washington Area will not be 
bumped up or reclassified as a moderate nonattainment area. This 
determination of attainment is not equivalent to a redesignation, and 
the states in the Washington Area and the District of Columbia must 
meet the statutory requirements for redesignation in order to be 
redesignated to attainment. This determination is also not a clean data 
determination. This action is being taken under the Clean Air Act 
(CAA).

DATES: This final rule is effective on December 14, 2017.

ADDRESSES: EPA established a docket for this action under Docket ID 
Number EPA-R03-OAR-2016-0369. All documents in the docket are listed on 
the http://www.regulations.gov Web site. Although listed in the docket 
index, some information is not publicly available, e.g., confidential 
business information (CBI) 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 through http://www.regulations.gov, or please contact the 
person identified in the FOR FURTHER INFORMATION CONTACT section below 
for additional availability information.

FOR FURTHER INFORMATION CONTACT: Gavin Huang, (215) 814-2042, or by 
email at [email protected].

SUPPLEMENTARY INFORMATION:

I. Background

    On April 25, 2017 (82 FR 19011), EPA published a notice of proposed 
rulemaking (NPR) for the Washington Area. The Washington Area consists 
of the Counties of Calvert, Charles, Frederick, Montgomery, and Prince 
George's in Maryland; the Counties of Arlington, Fairfax, Loudoun, and 
Prince William and the Cities of Alexandria, Fairfax, Falls Church, 
Manassas, and Manassas Park in Virginia; and the entirety of the 
District of Columbia. In the NPR, EPA proposed to determine, in 
accordance with its statutory obligations under section 181(b)(2)(A) of 
the CAA and the Provisions for Implementation of the 2008 Ozone 
National Ambient Air Quality Standards (40 CFR part 51, subpart AA), 
that the Washington Area attained the 2008 ozone NAAQS by the 
applicable attainment date of July 20, 2016.

II. EPA's Evaluation

    Section 181(b)(2)(A) of the CAA requires that EPA determine whether 
an area has attained the NAAQS by its attainment date based on complete 
and certified air quality data from the three full calendar years 
preceding an area's attainment date. The 2008 ozone NAAQS level is 
0.075 parts per million (ppm). See 73 FR 16436 (March 27, 2008). 
Consistent with the requirements contained in 40 CFR part 50, appendix 
P, EPA reviewed the ozone ambient air quality monitoring data for each 
monitoring site within the Washington Area for the monitoring period 
from 2013 through 2015, as recorded in the Air Quality System (AQS) 
database. Federal, state, and local agencies responsible for ozone air 
monitoring networks supplied and quality assured the data. EPA 
determined that all the Washington Area monitoring sites with valid 
data had design values equal to or less than 0.075 ppm based on the 
2013-2015 monitoring period. Therefore, based on 2013-2015 certified 
air quality

[[Page 52652]]

data, EPA concludes that the Washington Area has attained the 2008 
ozone NAAQS.
    The specific requirements of this determination of attainment by 
the attainment date and the rationale for EPA's proposed action are 
explained in the NPR and will not be restated here. EPA received 
comments that are addressed in Section III of this rulemaking action.

III. Public Comments and EPA's Responses

    EPA received adverse comments from one commenter, the Center for 
Biological Diversity (hereinafter referred to as the ``Commenter''). 
The Commenter expressed general concern about the ``increasing trend in 
ozone levels'' and the lack of data at monitoring stations. The 
Commenter's specific concerns are summarized and addressed in this 
section. EPA also received non-adverse comments.
    Comment 1: The Commenter notes that ``the 2013-2015 design values 
show 3 year averages below 70 ppm,'' but that ``there are many 
exceedances of 70 ppm on an annual basis and an increasing trend of 
values above 70 ppm from 2013-2015.''
    Response 1: The 2008 ozone NAAQS is the relevant standard for this 
determination of attainment by the attainment date, and the level of 
that NAAQS is 0.075 ppm and not 0.070 ppm. Therefore, the Commenter's 
statements as to the Washington Area's design value in relation to 
0.070 ppm are not relevant. As stated in the NPR, the 2008 ozone NAAQS 
is attained at a monitoring site when the three-year average of the 
annual fourth-highest daily maximum 8-hour average ambient air quality 
concentration, which is quality assured and certified, is less than or 
equal to 0.075 ppm. See 82 FR 19011, 19012.
    Design values are the metrics (i.e., statistics) that are compared 
to the NAAQS levels to determine compliance with the standard. See 40 
CFR part 50, appendix P, section 1(b). The 8-hour, concentration-based 
ozone NAAQS was designed so that the ``public health risks associated 
with exposure to a pollutant without a clear, discernable threshold can 
be appropriately addressed through a standard that allows for multiple 
exceedances to provide increased stability, but that also significantly 
limits the number of days on which the level may be exceeded and the 
magnitude of such exceedances.'' See 73 FR 16435. As of its July 20, 
2016 attainment date, the Washington Area's three-year average of the 
annual fourth-highest daily maximum 8-hour average ambient air quality 
concentration is less than or equal to the 0.075 ppm standard.
    Comment 2: The Commenter states that the proposed rule failed to 
address the 2016 data from monitoring stations and whether that data 
achieves the 2008 ozone NAAQS.
    Response 2: To determine whether an area attained by the 2008 ozone 
NAAQS attainment date of July 20, 2016, EPA is required to rely on the 
three previous full years of data, which are 2013-2015. CAA section 
181(b)(2)(A); 40 CFR part 50, appendix P, section 2.3(b). Any data 
occurring in calendar year 2016 cannot be used in this determination 
because July 20, 2016 is in the middle of the 2016 ozone season and 
would produce only incomplete, non-quality assured, and uncertified 
data as of the July 20, 2016 attainment date. The statutory provision 
governing the type of determination of attainment EPA is finalizing 
today is very clear: ``the Administrator shall determine, based on the 
area's design value (as of the attainment date), whether the area 
attained the standard by that date.'' CAA section 181(b)(2)(A) 
(emphasis added). When making determinations of attainment by the 
attainment deadline, EPA has consistently applied this unambiguous 
language as restricting its analysis to the years of data that 
constitute the basis for an area's design value as of the specific 
attainment deadline. EPA's regulations at 40 CFR part 50, appendix P 
further clarify that the design value be derived from ``three 
consecutive, complete calendar years of air quality monitoring data.'' 
40 CFR part 50, appendix P, section 2.3(b) (emphasis added). Taken 
together with the language of section 181(b)(2), for an attainment date 
of July 20, 2016, EPA is required to rely on the three previous, 
complete calendar years of data, which would be 2013-2015. The 
Commenter's request that EPA use calendar year 2016 data for this 
section 181(b)(2)(A) determination of attainment is not permitted under 
the statute and regulations.
    Comment 3: The Commenter is concerned with EPA's data substitution 
analysis because EPA does not have complete data to make its 
determination. Pursuant to 40 CFR part 50, appendix P, section 2.3(b), 
attainment demonstrations must be based upon ``three consecutive, 
complete calendar years of air quality monitoring data.''
    Response 3: The Commenter is correct that appendix P of 40 CFR part 
50 sets minimum data completeness requirements for quality assured 
monitoring data that must be met in order to make a determination of 
attainment for the ozone NAAQS; however, appendix P also permits adding 
missing days assumed less than the level of the standard where 
appropriate in order to meet the completeness requirements. 40 CFR part 
50, appendix P, section 2.3(b) states that: ``meteorological or ambient 
data may be sufficient to demonstrate that meteorological conditions on 
missing days were not conducive to concentrations above the level of 
the standard. Missing days assumed less than the level of the standard 
are counted for the purpose of meeting the data completeness 
requirement, subject to the approval of the appropriate Regional 
Administrator.'' As discussed in this rulemaking action, EPA and the 
District of Columbia Department of Energy and Environment (DC DOEE) 
provided analyses that showed the strong probability that the missing 
days would not have shown an exceedance of the 2008 ozone NAAQS, in 
accordance with appendix P, and was approved by the Region 3 Regional 
Administrator on December 12, 2016.
    Comment 4: The Commenter states that ``the data substitution 
analysis performed by the Takoma Recreation Center monitoring station 
(Site ID 110010050) and lack of data at Site ID 110010041 is incomplete 
and contradictory.'' The Commenter points out that the proposed rule 
states that data substitution analyses were performed using ``an 
analysis of the meteorological data and a regression analysis in order 
to meet the data completeness requirements'' and that ``EPA also 
conducted for these two monitors a substitution analysis as a check on 
the validity of the meteorological analysis and regression analysis.'' 
82 FR 19013. However, the document, the ``District of Columbia--
Submittal Letter for Data Substitution Analysis'' (Docket ID EPA-R03-
OAR-2016-0369-0008) fails to disclose or provide the regression 
analysis, and implies that the only analysis that was conducted was 
based on ``meteorological and ambient monitoring data.''
    Response 4: First, EPA notes that the document entitled ``Data 
Substitution Analysis 2013 Ozone Season, Takoma Recreation Center 
Station (AQS Site ID 11-001-0050)'' was created by DC DOEE (Docket 
Number EPA-OAR-2016-0369-0007), and not the Takoma Recreation Center, 
as stated in the comment.
    Second, for the River Terrace monitor (AQS ID #11-001-0041), EPA 
did not conduct any data substitution analysis. As explained in the 
NPR, the reason for the lack of 2014 and 2015 data at the

[[Page 52653]]

River Terrace monitor was a planned temporary monitor shutdown due to 
site renovation and construction that EPA approved into DC DOEE's 
annual network monitoring plan. Therefore, EPA would not look for a 
valid design value at this monitor, because three years of complete 
data was not available. See 82 FR 19013. Planned shutdowns of monitors 
are normal occurrences and are reviewed and approved by EPA in a 
state's annual network monitoring plan, and the remaining monitors in 
the Washington Area's network are sufficient to support a valid design 
value. See 40 CFR 58.10(a)(2). The Washington-Arlington-Alexandria, DC-
VA-MD-WV metropolitan statistical area (MSA) is only required to have 
three ozone monitoring sites, but the area has a robust monitoring 
network with sixteen ozone monitoring sites spread across three states. 
Therefore, data from the River Terrace monitor (AQS ID #11-001-0041) 
was not used in this determination of attainment by the attainment 
date.
    Third, as to the Commenter's concerns about what type of analysis 
was performed to achieve data completeness at the Takoma Recreation 
Center monitor, EPA's preamble in the NPR incorrectly stated that ``EPA 
also conducted for these two monitors a substitution analysis as a 
check on the validity of the meteorological analysis and regression 
analysis.'' See 82 FR 19013. The DC DOEE analysis for the Takoma 
Recreation Center monitor did not in fact include a separate 
substitution analysis as a check on the validity of the temperature 
analysis or the regression analysis--rather, DC DOEE's analysis as a 
whole was comprised of both a temperature analysis and a regression 
analysis.\1\ The Technical Support Document for the Takoma Recreation 
Center monitor, which was included in the docket with the proposed 
action, reflects the correct analysis for that monitor, which used both 
a temperature analysis and a regression analysis to achieve minimum 
data completeness. However, the preamble's misstatement does not 
invalidate the analyses or the choice of days assumed to be less than 
the ozone standard in the analyses. As noted in this rulemaking action, 
appendix P of 40 CFR part 50 allows missing days to be added to the 
site completeness using meteorological or ambient data, and that 
missing days assumed less than the level of the standard can be counted 
for the purpose of meeting the data completeness requirement, subject 
to the approval of the appropriate Regional Administrator. The Takoma 
Recreation Center analysis generated valid missing days that can be 
counted for the purpose of meeting the data completeness requirement in 
40 CFR part 50, appendix P.
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    \1\ As discussed in Comment 6, the EPA Clean Air Markets 
Division (CAMD) analysis for the Beltsville CASTNET monitor also did 
not perform a substitution analysis.
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    Contrary to the Commenter's suggestion, the regression analysis was 
included in the docket with the proposed action. The submittal letter 
from the DC DOEE cited in the comment (Docket EPA-R03-OAR-2016-0369-
0008) included a 21-page document entitled ``Data Substitution Analysis 
2013 Ozone Season, Takoma Recreation Center Station'' (Docket EPA-R03-
OAR-2016-0369-0007). The document makes it clear that DC DOEE compared 
seven years of temperature data from 2009 through 2015 from Reagan 
International Airport with actual measured ozone concentrations from 
2009 through 2015 at eight nearby ozone ambient monitors to determine 
whether there was a measured temperature below which none of those 
monitors recorded an exceedance of the 0.075 ppm ozone standard. Docket 
EPA-R03-OAR-2016-0369-0007, pp. 5-7. This analysis determined that 
during this seven-year period, none of these monitors exceeded the 
0.075 ppm ozone standard when the temperature was below 84 degrees 
Fahrenheit. Based on this finding, DC DOEE concluded that any ozone 
season day during 2013 (the year with missing data) for which the high 
temperature did not exceed 84 degrees Fahrenheit would likely measure 
below the 0.075 ppm ozone standard. Based on this assumption, DC DOEE 
flagged 68 days during the 2013 ozone season in the Takoma Recreation 
Center monitor's data as ``BG,'' meaning ``missing ozone data [but] not 
likely to exceed the level of the standard.'' Docket EPA-R03-OAR-2016-
0369-0007, pp. 5-7. Adding these 68 days in 2013 determined to be days 
below the ozone standard to the existing data set did not result in 
enough data points to meet the minimum yearly 75% completeness standard 
for ozone at this monitor. Therefore, the DC DOEE's analysis then used 
a regression analysis to determine whether additional ozone season days 
with missing data could be assumed to be below the ozone standard at 
the Takoma Recreation Center monitor. Docket EPA-R03-OAR-2016-0369-
0007, p. 7. Using this regression analysis, measured ozone values at 
the nearby McMillan ozone monitor were found to correlate strongly with 
measured ozone values at the Takoma Recreation Center monitor, such 
that an equation could be developed to predict missing ozone values at 
the Takoma Recreation Center monitor by using actual measured values 
from the McMillan monitor in the equation for those missing days. The 
regression equation identified a number of days in 2013 at the Takoma 
Recreation Center monitor where the temperature exceeded 85 degrees but 
the predicted ozone values did not exceed 0.075 ppm. Using this method, 
DC DOEE added 4 days in September 2013 with temperatures above 85 
degrees and 5 days in October 2013 with temperatures exceeding 85 
degrees to the 2013 ozone data for the Takoma Recreation Center 
monitor, also using the ``BG'' flag. In total, 77 days were added to 
the Takoma Recreation Center monitoring station.
    Comment 5: The Commenter noted that EPA relies upon the ``null 
code'' submission for 77 days for the Takoma Recreation Center 
monitoring station. A null qualifier is required when submitting a null 
(i.e., nothing was collected) sample measurement. The Commenter stated 
there is no analysis to demonstrate that the data collected on those 77 
days was below the 2008 ozone NAAQS. Furthermore, the inclusion of a 
lack of data, instead of modeled data projections, fails to meet the 
data completeness requirements.
    Response 5: The analysis showing that 77 days at the Takoma 
Recreation Center monitor meets the minimum data completeness 
requirement is contained in the DC DOEE's ``Data Substitution Analysis 
2013 Ozone Season, Takoma Recreation Center Station'' (Docket Number 
EPA-R03-OAR-2016-0369-0007). Also, see the response to Comment 4.
    The lack of data, as represented by a ``BG'' or other null code, 
for those days when the Takoma Recreation Center monitor did not 
measure valid ozone readings, does not automatically mean a failure to 
meet the data completeness requirements of 40 CFR part 50, appendix P. 
Nor does appendix P require ``modeled data projections.'' Rather, when 
there is a lack of data represented by a null code, section 2.3(b) of 
appendix P provides that those missing days may be used if they are 
reasonably assumed to be less than the level of the standard. The 
detailed temperature and regression analyses approved by the Regional 
Administrator, and included in the docket, establish the basis for 
EPA's conclusion that certain missing days at the Takoma Recreation 
Center monitor can be assumed to be less than the level of the NAAQS 
and therefore may be

[[Page 52654]]

counted towards the data completeness requirement.
    Comment 6: It is also unclear whether the CAMD--Data Substitution 
Analysis (Docket ID: EPA-R03-OAR-2016-0369-0006) for the CASTNET ozone 
monitor at the Beltsville, Maryland site provides the meteorological 
and substitution analysis as stated in the proposed rule and as 
required by the CAA. 40 CFR part 50, appendix P, section 2.3(b).
    Response 6: As noted in response to Comment 4, the preamble to the 
NPR incorrectly stated that a meteorological analysis, regression 
analysis, and a data substitution analysis were performed for both 
monitors. As shown in the analysis for the Beltsville CASTNET monitor 
(AQS ID #24-033-9991) (Docket Number: EPA-R03-OAR-2016-0369-0006), the 
EPA CAMD analysis was a linear regression analysis only. The regression 
analysis uses ambient data from a nearby monitor that closely 
correlates to readings from the monitor with the missing days. In 
accordance with appendix P, where the regression analysis projects that 
monitored values on the missing days would be less than the level of 
the NAAQS, EPA includes those in its completeness calculations.
    Comment 7: The Commenter stated that the proposed rule is clear 
that it fails to include the data for Site ID 110010041 for all of 2014 
and 2015 and fails to achieve the data completeness standards as 
required by 40 CFR part 50, appendix P.
    Response 7: As discussed in Response 4, EPA explained in the NPR 
that the reason for lack of 2014 and 2015 data at the River Terrace 
monitor (AQS ID #11-001-0041) was a planned monitor shutdown approved 
into DC DOEE's annual network monitoring plan. Planned shutdowns of 
monitors are normal occurrences and are reviewed and approved by EPA in 
a state's annual network monitoring plan. See 40 CFR 58.10(a)(2). 
Therefore, this monitor was not relied on for this determination of 
attainment by the attainment date. See 82 FR 19013. The data 
completeness requirements of appendix P do not apply to this monitor.
    Comment 8: EPA also received comments and an inquiry from a student 
supporting the environment and seeking more information regarding how 
air monitoring is performed and why the 2008 ozone standard is still 
discussed even though it is no longer 2008.
    Response 8: More information regarding the ozone NAAQS and air 
monitoring standards is available at www.epa.gov. For the Washington 
Area, the area had to attain the 2008 ozone NAAQS by the applicable 
attainment date of July 20, 2016. As stated in the NPR, in a final 
rulemaking action published on May 4, 2016, EPA determined that the 
Washington Area did not attain the 2008 ozone NAAQS by its July 20, 
2015 attainment date, based on ambient air quality monitoring data for 
the 2012-2014 monitoring period. In that same action, EPA determined 
that the Washington Area qualified for a 1-year extension of its 
attainment date. See 81 FR 26697. This ruling determines that the 
Washington Area attained the 2008 ozone NAAQS by this extended 
attainment date, using the required 2013-2015 air quality data.
    Comment 9: EPA also received comments that were not germane to this 
final ruling but referred generally to air quality standards and 
regulations. The comments included support of keeping EPA regulations 
in place to protect human health and the environment.
    Response 9: EPA appreciates the supportive comments, and notes that 
ozone air quality monitoring will continue and existing air quality 
standards and regulations will remain in place. These include all 
standards and regulations that apply to the Washington Area marginal 
nonattainment area, which include those pertaining to its membership in 
the ozone transport region (OTR). This determination of attainment by 
the attainment date does not reduce or revoke any existing ozone 
monitoring or control requirements.

IV. Final Action

    EPA is making a final determination, in accordance with its 
statutory obligations under section 181(b)(2)(A) of the CAA and the 
Provisions for Implementation of the 2008 Ozone NAAQS (40 CFR part 51, 
subpart AA), that the Washington Area attained the 2008 ozone NAAQS by 
the applicable attainment date of July 20, 2016. This determination of 
attainment does not constitute a redesignation to attainment or a clean 
data determination.

V. Statutory and Executive Order Reviews

A. General Requirements

    This rulemaking action finalizes a determination of attainment by 
the attainment date for the 2008 ozone NAAQS based on air quality data 
and does not impose additional requirements. For that reason, this 
determination of attainment:
     Is not a ``significant regulatory action'' subject to 
review by the Office of Management and Budget under Executive Orders 
12866 (58 FR 51735, October 4, 1993) and 13563 (76 FR 3821, January 21, 
2011);
     is not an Executive Order 13771 (82 FR 9339, February 2, 
2017) regulatory action because SIP approvals are exempted under 
Executive Order 12866;
     does not impose an information collection burden under the 
provisions of the Paperwork Reduction Act (44 U.S.C. 3501 et seq.);
     is certified as not having a significant economic impact 
on a substantial number of small entities under the Regulatory 
Flexibility Act (5 U.S.C. 601 et seq.);
     does not contain any unfunded mandate or significantly or 
uniquely affect small governments, as described in the Unfunded 
Mandates Reform Act of 1995 (Pub. L. 104-4);
     does not have federalism implications as specified in 
Executive Order 13132 (64 FR 43255, August 10, 1999);
     is not an economically significant regulatory action based 
on health or safety risks subject to Executive Order 13045 (62 FR 
19885, April 23, 1997);
     is not a significant regulatory action subject to 
Executive Order 13211 (66 FR 28355, May 22, 2001);
     is not subject to requirements of section 12(d) of the 
National Technology Transfer and Advancement Act of 1995 (15 U.S.C. 272 
note) because application of those requirements would be inconsistent 
with the CAA; and
     does not provide EPA with the discretionary authority to 
address, as appropriate, disproportionate human health or environmental 
effects, using practicable and legally permissible methods, under 
Executive Order 12898 (59 FR 7629, February 16, 1994).
    In addition, this rule does not have tribal implications as 
specified by Executive Order 13175 (65 FR 67249, November 9, 2000), 
because the Washington Area marginal nonattainment area does not 
include any Indian country located in these states, and EPA notes that 
it will not impose substantial direct costs on tribal governments or 
preempt tribal law.

B. Submission to Congress and the Comptroller General

    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,

[[Page 52655]]

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).

C. Petitions for Judicial Review

    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 January 16, 2018. 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 determining that the Washington Area attained the 2008 
ozone NAAQS by its July 20, 2016 attainment date may not be challenged 
later in proceedings to enforce its requirements. (See section 
307(b)(2).)

List of Subjects in 40 CFR Part 52

    Environmental protection, Air pollution control, Incorporation by 
reference, Ozone, Reporting and recordkeeping requirements.

    Dated: October 27, 2017.
Cosmo Servidio,
Regional Administrator, Region III.

    40 CFR part 52 is amended as follows:

PART 52--APPROVAL AND PROMULGATION OF IMPLEMENTATION PLANS

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

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

Subpart J--District of Columbia

0
2. In Sec.  52.475, paragraph (c) is added to read as follows:


Sec.  52.475  Determinations of attainment.

* * * * *
    (c) Based upon EPA's review of the air quality data for the 3-year 
period 2013 to 2015, the Washington, DC-MD-VA marginal ozone 
nonattainment area has attained the 2008 8-hour ozone national ambient 
air quality standard (NAAQS) by the applicable attainment date of July 
20, 2016. Therefore, EPA has met the requirement pursuant to Clean Air 
Act section 181(b)(2)(A) to determine, based on the area's air quality 
as of the attainment date, whether the area attained the standard. EPA 
also determined that the Washington, DC-MD-VA marginal nonattainment 
area will not be reclassified for failure to attain by its applicable 
attainment date pursuant to section 181(b)(2)(A).

Subpart V--Maryland

0
3. In Sec.  52.1082, paragraph (k) is added to read as follows:


Sec.  52.1082  Determinations of attainment.

* * * * *
    (k) Based upon EPA's review of the air quality data for the 3-year 
period 2013 to 2015, the Washington, DC-MD-VA marginal ozone 
nonattainment area has attained the 2008 8-hour ozone national ambient 
air quality standard (NAAQS) by the applicable attainment date of July 
20, 2016. Therefore, EPA has met the requirement pursuant to Clean Air 
Act section 181(b)(2)(A) to determine, based on the area's air quality 
as of the attainment date, whether the area attained the standard. EPA 
also determined that the Washington, DC-MD-VA marginal nonattainment 
area will not be reclassified for failure to attain by its applicable 
attainment date pursuant to section 181(b)(2)(A).

Subpart VV--Virginia

0
4. In Sec.  52.2430, paragraph (c) is added to read as follows:


Sec.  52.2430  Determinations of attainment.

* * * * *
    (c) Based upon EPA's review of the air quality data for the 3-year 
period 2013 to 2015, the Washington, DC-MD-VA marginal ozone 
nonattainment area has attained the 2008 8-hour ozone national ambient 
air quality standard (NAAQS) by the applicable attainment date of July 
20, 2016. Therefore, EPA has met the requirement pursuant to Clean Air 
Act section 181(b)(2)(A) to determine, based on the area's air quality 
as of the attainment date, whether the area attained the standard. EPA 
also determined that the Washington, DC-MD-VA marginal nonattainment 
area will not be reclassified for failure to attain by its applicable 
attainment date pursuant to section 181(b)(2)(A).

[FR Doc. 2017-24537 Filed 11-13-17; 8:45 am]
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