1884 Federal Register / Vol. 81, No. 9 / Thursday, January 14, 2016 / Rules and Regulations 

IV. Statutory and Executive Order 

Reviews 

Additional information about these 

statutes and Executive Orders can be 

found at http://www2.epa.gov/lawsregulations/laws-and-executive-orders. 

A. Executive Order 12866: Regulatory 

Planning and Review and Executive 

Order 13563: Improving Regulation and 

Regulatory Review 

This action is not a significant 

regulatory action and was therefore not 

submitted to the Office of Management 

and Budget (OMB) for review. 

B. Paperwork Reduction Act (PRA) 

This action does not impose an 

information collection burden under the 

PRA because this action does not 

impose additional requirements beyond 

those imposed by state law. 

C. Regulatory Flexibility Act (RFA) 

I certify that this action will not have 

a significant economic impact on a 

substantial number of small entities 

under the RFA. This action will not 

impose any requirements on small 

entities beyond those imposed by state 

law. 

D. 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. This action does not 

impose additional requirements beyond 

those imposed by state law. 

Accordingly, no additional costs to 

state, local, or tribal governments, or to 

the private sector, will result from this 

action. 

E. 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. 

F. Executive Order 13175: Coordination 

With Indian Tribal Governments 

This action does not have tribal 

implications, as specified in Executive 

Order 13175, because the SIP is not 

approved to apply on any Indian 

reservation land or in any other area 

where the EPA or an Indian tribe has 

demonstrated that a tribe has 

jurisdiction, and will not impose 

substantial direct costs on tribal 

governments or preempt tribal law. 

Thus, Executive Order 13175 does not 

apply to this action. 

G. Executive Order 13045: Protection of 

Children From Environmental Health 

Risks and Safety Risks 

The EPA interprets Executive Order 

13045 as applying only to those 

regulatory actions that concern 

environmental health or safety risks that 

the EPA has reason to believe may 

disproportionately affect children, per 

the definition of ‘‘covered regulatory 

action’’ in section 2–202 of the 

Executive Order. This action is not 

subject to Executive Order 13045 

because it does not impose additional 

requirements beyond those imposed by 

state law. 

H. 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. 

I. National Technology Transfer and 

Advancement Act (NTTAA) 

Section 12(d) of the NTTAA directs 

the EPA to use voluntary consensus 

standards in its regulatory activities 

unless to do so would be inconsistent 

with applicable law or otherwise 

impractical. The EPA believes that this 

action is not subject to the requirements 

of section 12(d) of the NTTAA because 

application of those requirements would 

be inconsistent with the CAA. 

J. Executive Order 12898: Federal 

Actions To Address Environmental 

Justice in Minority Populations and 

Low-Income Population 

The EPA lacks the discretionary 

authority to address environmental 

justice in this rulemaking. 

K. 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 United 

States. This action is not a ‘‘major rule’’ 

as defined by 5 U.S.C. 804(2). 

L. Petitions for Judicial Review 

Under section 307(b)(1) of the Clean 

Air Act, petitions for judicial review of 

this action must be filed in the United 

States Court of Appeals for the 

appropriate circuit by March 14, 2016. 

Filing a petition for reconsideration by 

the Administrator of this final rule does 

not affect the finality of this rule 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 in 40 CFR Part 52 

Environmental protection, Air 

pollution control, Incorporation by 

reference, Intergovernmental relations, 

Nitrogen dioxide, Ozone, Particulate 

matter, Reporting and recordkeeping 

requirements, Sulfur dioxide, Volatile 

organic compounds. 

Dated: December 24, 2015. 

Alexis Strauss, 

Acting Regional Administrator, Region IX. 

Part 52, Chapter I, Title 40 of the Code 

of Federal Regulations is amended as 

follows: 

PART 52—APPROVAL AND 

PROMULGATION OF 

IMPLEMENTATION PLANS 

■ 1. The authority citation for part 52 

continues to read as follows: 

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

Subpart DD—Nevada 

§ 52.1470 [Amended] 

■ 2. In § 52.1470 in paragraph (c), Table 

3 is amended by removing the entries 

for ‘‘Section 29,’’ ‘‘Section 30: 

Subsections 30.1–30.7 (excluding 

subsection 30.4),’’ ‘‘Section 30 

(Incinerators): Subsection 30.4,’’ and 

‘‘Section 30 (Incinerators): Subsection 

30.8.’’ 

[FR Doc. 2016–00340 Filed 1–13–16; 8:45 am] 

BILLING CODE 6560–50–P 

ENVIRONMENTAL PROTECTION 

AGENCY 

40 CFR Part 52 

[EPA–R06–OAR–2015–0647; FRL–9941–21– 

Region 6] 

Approval and Promulgation of 

Implementation Plans; Arkansas; 

Crittenden County Base Year Emission 

Inventory 

AGENCY: Environmental Protection 

Agency (EPA). 

ACTION: Direct final rule. 

SUMMARY: The Environmental Protection 

Agency (EPA) is approving a revision to 

the Arkansas State Implementation Plan 

(SIP) submitted to meet the Clean Air 

Act (CAA) emissions inventory (EI) 

requirement for the Crittenden County 

ozone nonattainment area. EPA is 

approving the SIP revision because it 

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Federal Register / Vol. 81, No. 9 / Thursday, January 14, 2016 / Rules and Regulations 1885 

1On October 1, 2015, the EPA strengthened the 

ozone standard to 0.070 ppm (80 FR 65292, October 

26, 2015). The EPA has not made designations 

under this new standard and the emission 

inventory under evaluation in this rulemaking does 

not address that standard. 

satisfies the CAA EI requirement for 

Crittenden County under the 2008 8- 

hour ozone National Ambient Air 

Quality Standards (NAAQS). The 

inventory includes emissions data for 

Nitrogen Oxides (NOX) and Volatile 

Organic Compounds (VOCs). EPA is 

approving the revisions pursuant to 

section 110 and part D of the CAA and 

EPA’s regulations. 

DATES: This rule is effective on March 

14, 2016 without further notice, unless 

the EPA receives relevant adverse 

comment by March 14, 2016. If the EPA 

receives such comment, the EPA will 

publish a timely withdrawal in the 

Federal Register informing the public 

that this rule will not take effect. 

ADDRESSES: Submit your comments, 

identified by Docket No. EPA–R06– 

OAR–2015–0647, at http://

www.regulations.gov or via email to 

Schwartz.Colin@epa.gov. Follow the 

online instructions for submitting 

comments. Once submitted, comments 

cannot be edited or removed from 

Regulations.gov. The EPA may publish 

any comment received to its public 

docket. Do not submit electronically any 

information you consider to be 

Confidential Business Information (CBI) 

or other information whose disclosure is 

restricted by statute. Multimedia 

submissions (audio, video, etc.) must be 

accompanied by a written comment. 

The written comment is considered the 

official comment and should include 

discussion of all points you wish to 

make. The EPA will generally not 

consider comments or comment 

contents located outside of the primary 

submission (i.e. on the web, cloud, or 

other file sharing system). For 

additional submission methods, please 

contact Mr. Colin Schwartz, 214–665– 

7262, Schwartz.Colin@epa.gov. For the 

full EPA public comment policy, 

information about CBI or multimedia 

submissions, and general guidance on 

making effective comments, please visit 

http://www2.epa.gov/dockets/

commenting-epa-dockets. 

Docket: The index to the docket for 

this action is available electronically at 

www.regulations.gov and in hard copy 

at EPA Region 6, 1445 Ross Avenue, 

Suite 700, Dallas, Texas. While all 

documents in the docket are listed in 

the index, some information may be 

publicly available only at the hard copy 

location (e.g., copyrighted material), and 

some may not be publicly available at 

either location (e.g., CBI). 

FOR FURTHER INFORMATION CONTACT: Mr. 

Colin Schwartz, 214–665–7262, 

Schwartz.Colin@epa.gov. To inspect the 

hard copy materials, please schedule an 

appointment with Mr. Schwartz or Mr. 

Bill Deese at 214–665–7253. 

SUPPLEMENTARY INFORMATION: 

Throughout this document ‘‘we,’’ ‘‘us,’’ 

and ‘‘our’’ means the EPA. 

I. Background 

A. The 2008 Ozone NAAQS and 

Emissions Inventory Requirement 

On March 12, 2008, the EPA revised 

the eight-hour ozone NAAQS from 0.08 

parts per million (ppm) to 0.075 ppm. 

(73 FR 16436, March 27, 2008). The EPA 

designated Crittenden County as a 

nonattainment area for the 2008 ozone 

NAAQS (77 FR 30088, May 21, 2012).1

CAA sections 172(c)(3) and 182(a)(1) 

require states to develop and submit as 

a SIP revision an emissions inventory 

for all areas designated as 

nonattainment for the ozone NAAQS. 42 

U.S.C. 172(c) and 182(a). An emissions 

inventory is an estimation of actual 

emissions of air pollutants in an area. 

Ground-level ozone, O3, is a gas that is 

formed by the reaction of VOCs and 

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 non-road motor vehicles and 

engines, and smaller sources, 

collectively referred to as area sources. 

The EIs provide data for a variety of air 

quality planning tasks including 

establishing baseline emission levels, 

calculating federally required emission 

reduction targets, emission inputs into 

air quality simulation models, and 

tracking emissions over time. The total 

EI of VOC and NOX for an area are 

summarized from the estimates 

developed for four general categories of 

emissions sources: Point, area, mobile, 

and biogenic. The EPA’s 2008 ozone 

standard SIP requirements rule 

recommends that states use 2011 as a 

base year to address EI requirements (80 

FR 12264, 34190, March 6, 2015). 

B. Arkansas’ Submittal 

On August 28, 2015, Arkansas 

submitted to the EPA the SIP revision 

addressing the emissions inventory 

requirement for Crittenden County 

under the 2008 ozone NAAQS. The 

inventory includes estimates of 2011 

NOX and VOC emissions in tons per 

year. The 2011 Base Year Inventory is 

the starting point for calculating the 

reductions necessary to meet the 

requirements of the CAA. Sections 172 

(c)(3) and 182(b)(1) of the CAA require 

that nonattainment plan provisions 

include an inventory of actual emissions 

from all sources of relevant pollutants in 

the nonattainment area. The inventory 

includes all area, point, non-road 

mobile, and on-road mobile source 

emissions in the Crittenden County 

ozone nonattainment area. The 

inventory also includes a description of 

the methods used to estimate emissions. 

A copy of the submittal is available in 

the electronic docket for this action. 

C. What criteria must be met for the EPA 

to approve this SIP revision? 

Section 182(a)(1) of the CAA requires 

states with nonattainment areas to 

submit a comprehensive and accurate 

inventory of ozone precursor emissions 

from all sources within two years of the 

effective date of designation, which was 

July 20, 2012. Also, Section 172(c)(3) 

requires that such an inventory shall 

include a comprehensive accurate, 

current inventory of actual emissions 

from all sources of the relevant 

pollutant or pollutants in such area, 

including such periodic revisions as the 

Administrator may determine necessary 

to assure that the requirements of this 

part are met. 

II. The EPA’s Evaluation 

EPA reviewed the revision for 

consistency with the requirements of 

EPA regulations. A summary of EPA’s 

analysis is provided below. For a full 

discussion of our evaluation, please see 

our Technical Support Document (TSD). 

Sections 172(c)(3) and 182(a)(1) of the 

CAA require an inventory of actual 

emissions from all sources of relevant 

pollutants in the nonattainment area. 

The 2011 base year emission inventory 

data include all point, area, and nonroad and on-road mobile sources in 

Crittenden County. Point source 

emissions were entered through the 

State and Local Emissions Inventory 

System (SLEIS) and area sources were 

developed in accordance with the 

federal Air Emissions Reporting 

Requirements (AERR) rule. Non-road 

mobile sources utilized the National 

Mobile Inventory Model (NMIM) while 

the on-road sources used the Motor 

Vehicle Emissions Simulator 

(MOVES2010b). The EPA has 

determined that the inventory was 

developed in accordance with CAA 

guidelines and that the revised 2011 

base year emission inventory is 

approvable. The submittal meets the 

goal of reaching attainment by reducing 

O3 forming precursors. Table 1 lists the 

emissions inventory for the Crittenden 

County area. For more detail on how the 

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1886 Federal Register / Vol. 81, No. 9 / Thursday, January 14, 2016 / Rules and Regulations 

emissions inventories were estimated 

and evaluated, see the TSD. 

TABLE 1—BASE YEAR EMISSIONS INVENTORY, 2011 DATA

Category Ozone season 

daily NOX Annual NOX Ozone season daily VOC Annual VOC Ozone season daily CO Annual CO 

Units Tons/day Tons/year Tons/day Tons/year Tons/day Tons/year 

Point ......................................................... 0.0017 .063 .051 186.84 0.004 1.58 

Area .......................................................... 8.70 3,165.17 24.90 8,868.94 20.32 7,375.56 

Non-road Mobile ...................................... 2.11 582.63 3.66 881.35 13.78 3,476.63 

On-road Mobile ........................................ 6.80 2,542 2.42 845 23.13 9,051 

Total .................................................. 17.61 6,290.43 31.49 10,782.13 57.234 19,904.77 

III. Final Action 

We are approving revisions to the 

Arkansas SIP that pertain to the 2008 

ozone SIP emissions inventory for 

Crittenden County, as are listed in Table 

1. 

The EPA is publishing this rule 

without prior proposal because we view 

this as a non-controversial amendment 

and anticipate no adverse comments. 

However, in the proposed rules section 

of this Federal Register publication, we 

are publishing a separate document that 

will serve as the proposal to approve the 

SIP revision if relevant adverse 

comments are received. This rule will 

be effective on March 14, 2016 without 

further notice unless we receive relevant 

adverse comment by February 16, 2016. 

If we receive relevant adverse 

comments, we will publish a timely 

withdrawal in the Federal Register 

informing the public that the rule will 

not take effect. We will address all 

public comments in a subsequent final 

rule based on the proposed rule. We 

will not institute a second comment 

period on this action. Any parties 

interested in commenting must do so 

now. Please note that if we receive 

relevant adverse comment on an 

amendment, paragraph, or section of 

this rule and if that provision may be 

severed from the remainder of the rule, 

we may adopt as final those provisions 

of the rule that are not the subject of an 

adverse comment. 

IV. Statutory and Executive Order 

Reviews 

Under the CAA, 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, the 

EPA’s role is to approve state choices, 

provided that they meet the criteria of 

the CAA. Accordingly, this action 

merely approves state law as meeting 

Federal requirements and does not 

impose additional requirements beyond 

those imposed by state law. For that 

reason, this action: 

• Is not a ‘‘significant regulatory 

action’’ subject to review by the Office 

of Management and Budget under 

Executive Orders 12866 (58 FR 51735, 

October 4, 1993) and 13563 (76 FR 3821, 

January 21, 2011); 

• Does not impose an information 

collection burden under the provisions 

of the Paperwork Reduction Act (44 

U.S.C. 3501 et seq.); 

• Is certified as not having a 

significant economic impact on a 

substantial number of small entities 

under the Regulatory Flexibility Act (5 

U.S.C. 601 et seq.); 

• Does not contain any unfunded 

mandate or significantly or uniquely 

affect small governments, 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, the SIP is not approved to 

apply on any Indian reservation land or 

in any other area where EPA or an 

Indian tribe has demonstrated that a 

tribe has jurisdiction. In those areas of 

Indian country, the rule does not have 

tribal implications and will not impose 

substantial direct costs on tribal 

governments or preempt tribal law as 

specified by Executive Order 13175 (65 

FR 67249, November 9, 2000). 

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. The EPA will 

submit a report containing this rule 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 14, 2016. Filing a 

petition for reconsideration by the 

Administrator of this final rule does not 

affect the finality of this rule 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).) 

Samuel Coleman was designated the 

Acting Regional Administrator on 

December 30, 2015 through the order of 

succession outlined in Regional Order 

R6–1110.1, a copy of which is included 

in the docket for this action. 

List of Subjects in 40 CFR Part 52 

Environmental protection, Air 

pollution control, Incorporation by 

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Federal Register / Vol. 81, No. 9 / Thursday, January 14, 2016 / Rules and Regulations 1887 

reference, Ozone, Reporting and 

recordkeeping requirements, Volatile 

Organic Compounds. 

Dated: December 30, 2015. 

Samuel Coleman, 

Acting Regional Administrator, Region 6. 

40 CFR part 52 is amended as follows: 

PART 52—APPROVAL AND 

PROMULGATION OF 

IMPLEMENTATION PLANS 

■ 1. The authority citation for part 52 

continues to read as follows: 

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

Subpart E—Arkansas 

■ 2. In § 52.170(e), the third table titled 

‘‘EPA-Approved Nonregulatory 

Provisions and Quasi-Regulatory 

Measures’’ is amended by adding an 

entry for ‘‘Crittenden County Base Year 

Emission Inventory for the 2008 Ozone 

Standard’’ to the end of the table. 

The addition reads as follows: 

§ 52.170 Identification of plan. 

* * * * * 

(e) * * * 

EPA-APPROVED NONREGULATORY PROVISIONS AND QUASI-REGULATORY MEASURES IN THE ARKANSAS SIP 

Name of SIP provision Applicable geographic or 

nonattainment area 

State 

submittal/ 

effective 

date 

EPA approval date Explanation 

*******

Crittenden County Base Year Emission Inventory 

for the 2008 Ozone Standard.

Crittenden County .......... 8/28/2015 1/13/2016 [Insert Federal Register citation].

[FR Doc. 2016–00559 Filed 1–13–16; 8:45 am] 

BILLING CODE 6560–50–P 

ENVIRONMENTAL PROTECTION 

AGENCY 

40 CFR Part 52 

[EPA–R07–OAR–2015–0587; FRL 9941–01– 

Region 7] 

Approval of Missouri’s Air Quality 

Implementation Plans; Early Progress 

Plan of the St. Louis Nonattainment 

Area for the 2008 Ozone National 

Ambient Air Quality Standard 

AGENCY: Environmental Protection 

Agency (EPA). 

ACTION: Direct final rule. 

SUMMARY: The Environmental Protection 

Agency (EPA) is taking direct final 

action to approve revisions to the State 

Implementation Plan (SIP) submitted by 

the State of Missouri consisting of the 

Early Progress Plan and motor vehicle 

emissions budgets (MVEBs) for volatile 

organic compounds (VOCs) and oxides 

of nitrogen (NOX) for the St. Louis 

Nonattainment area under the 2008 

8-hour National Ambient Air Quality 

Standard (NAAQS). On August 26, 

2013, EPA received from the Missouri 

Department of Natural Resources 

(MDNR) an Early Progress Plan for the 

St. Louis area showing progress toward 

attainment under the 2008 Ozone 

NAAQS. This submittal was developed 

to establish MVEBs for the St. Louis 

8-hour ozone nonattainment area. This 

approval of the Early Progress Plan for 

the St. Louis 8-hour ozone 

nonattainment area fulfills EPA’s 

requirement to act on the MDNR SIP 

submission and to formalize that the 

MVEB is approved, and when 

considered with the emissions from all 

sources, demonstrates progress toward 

attainment from the 2008 base year 

through a 2015 target year. EPA found 

these MVEBs adequate for 

transportation conformity purposes in 

an earlier action on March 5, 2014. 

DATES: This direct final rule will be 

effective March 14, 2016, without 

further notice, unless EPA receives 

adverse comment by February 16, 2016. 

If EPA receives adverse comment, we 

will publish a timely withdrawal of the 

direct final rule in the Federal Register 

informing the public that the rule will 

not take effect. 

ADDRESSES: Submit your comments, 

identified by Docket ID No. EPA–R07– 

OAR–2015–0587, to http://

www.regulations.gov. Follow the online 

instructions for submitting comments. 

Once submitted, comments cannot be 

edited or removed from Regulations.gov. 

EPA may publish any comment received 

to its public docket. Do not submit 

electronically any information you 

consider to be Confidential Business 

Information (CBI) or other information 

whose disclosure is restricted by statute. 

Multimedia submissions (audio, video, 

etc.) must be accompanied by a written 

comment. The written comment is 

considered the official comment and 

should include discussion of all points 

you wish to make. EPA will generally 

not consider comments or comment 

contents located outside of the primary 

submission (i.e. on the web, cloud, or 

other file sharing system). For 

additional submission methods, the full 

EPA public comment policy, 

information about CBI or multimedia 

submissions, and general guidance on 

making effective comments, please visit 

http://www2.epa.gov/dockets/

commenting-epa-dockets. 

FOR FURTHER INFORMATION CONTACT: 

Steven Brown, Environmental 

Protection Agency, Air Planning and 

Development Branch, 11201 Renner 

Boulevard, Lenexa, Kansas 66219 at 

913–551–7718 or by email at 

brown.steven@epa.gov. 

SUPPLEMENTARY INFORMATION: 

Throughout this document ‘‘we,’’ ‘‘us,’’ 

or ‘‘our’’ refer to EPA. This section 

provides additional information by 

addressing the following: 

I. What is the background for this action? 

II. What are the criteria for early progress 

plans? 

III. What is EPA’s analysis of the request? 

IV. What are the MVEB’s for the St. Louis 

8-hour ozone area? 

V. What action is EPA taking? 

I. What is the background for this 

action? 

EPA’s final rule designating 

nonattainment areas and associated 

classifications for the 2008 ozone 

National Ambient Air Quality Standards 

(NAAQS) was published in the Federal 

Register on May 21, 2012 (77 FR 30088). 

The St. Louis area was designated as 

marginal nonattainment. The St. Louis 

ozone area had previously been 

designated nonattainment for the 1-hour 

ozone standard and had 1-hour motor 

vehicle emissions budgets (MVEBs) for 

NOX and VOC established in the St. 

Louis 1-hour maintenance plan SIP (66 

FR 33996). The 1-hour MVEBs were the 

only approved MVEBs for St. Louis and 

were based on EPA’s MOBILE6.2 

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