Federal Register / Vol. 86, No. 142 / Wednesday, July 28, 2021 / Proposed Rules 40395 

§ 52.820 Identification of plan. 

* * * * * 

(c) * * * 

APPROVED IOWA REGULATIONS

Iowa 

citation Title State effective date EPA approval date Explanation 

Iowa Department of Natural Resources Environmental Protection Commission [567] 

*******

Polk County 

Chapter V ....... Polk County Board of Health 

Rules and Regulations Air 

Pollution Chapter V.

11/30/18 [Date of publication of the 

final rule in the Federal 

Register], [Federal Register citation of the final 

rule].

Article I, Section 5–2, definition of ‘‘anaerobic 

lagoon’’ and ‘‘variance;’’ Article III, Incineration and Open Burning, Section 5–7(d) 

Variance Application; Article VI, Sections 

5–16(n), (o) and (p); Article VIII; Article IX, 

Sections 5–27(3) and (4); Article X, Section 5–28, subsections (a) through (c), and 

Article X, Section 5–35(b)(5); Article XIII; 

Article XIV; and Article XVI, Section 5–75B 

are not part of the SIP. 

* * * * * * * 

* * * * * 

[FR Doc. 2021–15733 Filed 7–27–21; 8:45 am] 

BILLING CODE 6560–50–P 

ENVIRONMENTAL PROTECTION 

AGENCY 

40 CFR Part 52 

[EPA–R07–OAR–2021–0405; FRL–8708–01– 

R7] 

Air Plan Approval; Approval of 

Missouri Air Quality Implementation 

Plans; Revisions to St. Louis 1997 

PM2.5 Maintenance Plan 

AGENCY: Environmental Protection 

Agency (EPA). 

ACTION: Proposed rule. 

SUMMARY: The Environmental Protection 

Agency (EPA) is proposing to approve a 

State Implementation Plan (SIP) 

revision submitted by the State of 

Missouri on November 12, 2019, 

revising the maintenance plan 

demonstrating continued maintenance 

of the 1997 PM2.5 National Ambient Air 

Quality Standards (NAAQS) in the St. 

Louis area. This revision states that the 

St. Louis area no longer needs to rely on 

the vehicle Inspection and Maintenance 

(I/M) program and the use of 

Reformulated Gasoline (RFG) for 

continued maintenance throughout the 

maintenance period for the 1997 PM2.5

NAAQS. EPA is proposing to determine 

that this revision meets the 

requirements of the Clean Air Act. 

DATES: Comments must be received on 

or before August 27, 2021. 

ADDRESSES: You may send comments, 

identified by Docket ID No. EPA–R07– 

OAR–2021–0405 to https://

www.regulations.gov. Follow the online 

instructions for submitting comments. 

Instructions: All submissions received 

must include the Docket ID No. for this 

rulemaking. Comments received will be 

posted without change to https://

www.regulations.gov/, including any 

personal information provided. For 

detailed instructions on sending 

comments and additional information 

on the rulemaking process, see the 

‘‘Written Comments’’ heading of the 

SUPPLEMENTARY INFORMATION section of 

this document. 

FOR FURTHER INFORMATION CONTACT: 

Steven Brown, Environmental 

Protection Agency, Region 7 Office, Air 

Quality Planning Branch, 11201 Renner 

Boulevard, Lenexa, Kansas 66219; 

telephone number: (913) 551–7718; 

email address: brown.steven@epa.gov. 

SUPPLEMENTARY INFORMATION: 

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

and ‘‘our’’ refer to the EPA. 

Table of Contents 

I. Written Comments 

II. What is being addressed in this document? 

III. Have the requirements for approval of a 

SIP revision been met? 

IV. What action is the EPA proposing to take? 

V. Statutory and Executive Order Reviews 

I. Written Comments 

Submit your comments, identified by 

Docket ID No. EPA–R07–OAR–2021– 

0405, at https://www.regulations.gov. 

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, the full 

EPA public comment policy, 

information about CBI or multimedia 

submissions, and general guidance on 

making effective comments, please visit 

https://www.epa.gov/dockets/ 

commenting-epa-dockets. 

II. What is being addressed in this 

document? 

The EPA is proposing to approve SIP 

revisions submitted by the State of 

Missouri on November 12, 2019, 

revising the 1997 PM2.5 maintenance 

plan. This SIP revision demonstrates 

continued maintenance of the 1997 

PM2.5 NAAQS in the St. Louis area 

through the future year of 2025. The 

maintenance area boundary includes the 

Missouri counties of Franklin, Jefferson, 

St. Charles, and St. Louis along with the 

City of St. Louis. 

Through this action, the Missouri 

Department of Natural Resources 

(MoDNR) is requesting EPA to approve 


khammond on DSKJM1Z7X2PROD with PROPOSALS
40396 Federal Register / Vol. 86, No. 142 / Wednesday, July 28, 2021 / Proposed Rules 

1 83 FR 38033, August 3, 2018 (effective date of 

October 2, 2018). 

this maintenance plan into Missouri’s 

SIP pursuant to Clean Air Act (CAA) 

Section 175A as a replacement to the 

maintenance plan previously approved 

by EPA on October 2, 2018 (83 FR 

38033). 

On August 3, 2018, EPA published in 

the Federal Register a final rulemaking 

approving the State of Missouri’s 

request to redesignate the Missouri 

portion of the St. Louis nonattainment 

area to attainment and their 

demonstration for maintaining the 1997 

PM2.5 NAAQS through the ten-year 

maintenance period. The effective date 

for this approval was on October 2, 2018 

(83 FR 38033). 

The SIP revision we are acting on in 

this proposal, removes the reliance on 

the St. Louis vehicle Inspection and 

Maintenance (I/M) program and the use 

of Reformulated Gasoline (RFG) for 

continued maintenance of the 1997 

PM2.5 standard. To support this revision, 

Missouri utilized EPA’s 2014 Motor 

Vehicle Emissions Simulator 

(MOVES2014b) emission modeling 

system to project revised mobile source 

emissions by removing emissions 

reductions related to I/M and RFG 

throughout the maintenance period to 

the future year of 2025. 

Tables 1 and 2 below lists the total 

direct PM2.5 and PM2.5 precursor 

emissions for the attainment year 2008 

and the projection year 2025 for point, 

area, onroad and nonroad source 

categories of the five counties in the St. 

Louis area. Because the area attained the 

standard in 2008, this represents a level 

of emissions suitable to maintain 

compliance with the 1997 PM2.5

standard. By comparing the total 

emissions in Tables 1 and 2, Missouri’s 

emissions analysis shows substantial 

decreases in mobile source emissions 

and decreases in total source category 

emissions through the maintenance 

period of 2025. These decreases in 

direct PM2.5 and precursor pollutants 

demonstrate the area will continue to 

meet the 1997 PM2.5 standard 

throughout the maintenance period 

without relying on the I/M program or 

RFG requirements in the Missouri 

portion of the maintenance area. 

TABLE–1—ST. LOUIS AREA 2008 TOTAL EMISSIONS IN TONS PER YEAR

State Source category NH3 NOX PM2.5 SO2 VOC 

Missouri Area ...................... Point Source ....................... 1,308.64 31,103.26 3,493.39 201,700.73 5,067.89 

Area Source ....................... 3,514.98 4,382.94 14,033.64 11,510.48 38,215.34 

Onroad Source ................... 1,056.17 58,819.58 2,179.28 426.65 23,793.80 

Nonroad Source ................. 15.68 20,722.57 1,199.82 544.3 11,545.53 

Illinois Area ......................... Point Source ....................... 208.31 16,608.41 2,438.05 49,895.15 4,270.41 

Area Source ....................... 3,354.13 1,638.36 4,749.40 246.67 7,796.35 

Onroad Source ................... 304.71 17,965.82 524.49 60.26 6,741.77 

Nonroad Source ................. 6.04 8,509.49 425.04 355.25 2,944.51 

Total Emissions Tons/ 

year.

............................................. 9,768.66 159,750.43 29,043.11 264,739.49 100,375.60 

TABLE–2—ST. LOUIS AREA 2025 TOTAL EMISSIONS IN TONS PER YEAR

State Source category NH3 NOX PM2.5 SO2 VOC 

Missouri Area ...................... Point Source ....................... 1,431.04 17,051.11 1,945.67 94,687.19 3,106.68 

Area Source ....................... 3,232.53 4,937.54 6,756.09 247.98 26,637.27 

Onroad Source ................... 624.33 11,718.99 481.94 103.27 6,569.16 

Nonroad Source ................. 13.10 7,136.63 547.21 134.85 5,664.63 

Illinois Area ......................... Point Source ....................... 254.91 13,762.60 2,219.54 44,700.05 5,747.23 

Area Source ....................... 3,374.18 1,735.21 4,668.15 268.04 9,249.75 

Onroad Source ................... 178.97 3,849.45 119.31 52.83 2,042.78 

Nonroad Source ................. 8.16 8,687.02 303.26 400.33 1,585.08 

Total Emissions Tons/ 

year.

............................................. 9,117.22 68,878.55 17,041.17 140,594.54 60,602.58 

It is important to note approval of this 

maintenance plan revision does not 

remove the I/M program or the RFG 

program requirements from the SIP. 

In addition, the motor vehicle 

emissions budgets (MVEBs) from the 

previously SIP approved Maintenance 

Plan for the PM2.5 NAAQS 1 and this SIP 

submittal remain the same. Therefore, 

there are no new MVEBs being created 

for this SIP revision. Moreover, EPA has 

revoked the 1997 primary annual PM2.5

NAAQS, which has been replaced by 

the more health protective 2012 primary 

annual PM2.5 NAAQS and Missouri is 

currently in compliance with this 

standard (84 FR 36472). As a result, 

areas that have been redesignated to 

attainment for the 1997 annual PM2.5

NAAQS (i.e., maintenance areas for the 

1997 annual PM2.5 NAAQS) will no 

longer be required to make 

transportation conformity 

determinations for that NAAQS (81 FR 

58010). 

EPA is proposing approval of the 

revised maintenance plan based on 

information provided in the emissions 

projections, modeling results and an 

evaluation of quality assured air 

monitoring data submitted as part of 

this revision and in a previously 

reviewed analysis as part of the St. 

Louis Nonattainment Area 1997 PM2.5

NAAQS Redesignation rulemaking 

published on August 3, 2018 (83 FR 

38033). Current and future projections 

of air quality and emissions data for this 

revision demonstrates maintenance for 

the 1997 PM2.5 NAAQS. 

This revision only affects 

maintenance for the 1997 PM2.5

standard, only removes the reliance 

upon the I/M and RFG programs for 

continued maintenance and therefore 

meets the requirements of the Clean Air 

Act. 

The full text of the plan revisions 

including Missouri’s technical 


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Federal Register / Vol. 86, No. 142 / Wednesday, July 28, 2021 / Proposed Rules 40397 

demonstration can be found in the 

State’s submission, which is included in 

the docket for this action. 

III. Have the requirements for approval 

of a SIP revision been met? 

The State submission has met the 

public notice requirements for SIP 

submissions in accordance with 40 CFR 

51.102. The submission also satisfied 

the completeness criteria of 40 CFR part 

51, appendix V. The State provided 

public notice on this SIP revision from 

July 29, 2019 through September 13, 

2019 and received one comment from 

the Missouri Petroleum Marketers and 

Convenience Store Association, one 

comment from Abel Realty, and thirteen 

comments from EPA. After receiving 

comments, the state revised the SIP 

prior to submitting the plan to EPA. In 

addition, as explained above and in 

more detail in the Missouri submittal 

document, which is part of the docket, 

the revision meets the substantive SIP 

requirements of the CAA, including 

section 110 and implementing 

regulations. 

IV. What action is the EPA proposing to 

take? 

We are proposing to approve a SIP 

revision submitted by the State of 

Missouri on November 12, 2019, 

revising the 1997 PM2.5 maintenance 

plan. EPA is proposing to determine 

that this revision would not interfere 

with attainment or maintenance of the 

NAAQS or with any other CAA 

requirement. We are processing this as 

a proposed action because we are 

soliciting comments on this proposed 

action. Final rulemaking will occur after 

consideration of any comments. 

V. Statutory and Executive Order 

Reviews 

Under the Clean Air Act (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, 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 the 

National Technology Transfer and 

Advancement Act (NTTA) because this 

rulemaking does not involve technical 

standards; 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). 

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 proposed 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). 

List of Subjects in 40 CFR Part 52 

Environmental protection, Air 

pollution control, Incorporation by 

reference. 

Dated: July 19, 2021. 

Edward H. Chu, 

Acting Regional Administrator, Region 7. 

For the reasons stated in the 

preamble, the EPA proposes to amend 

40 CFR part 52 as set forth below: 

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 AA—Missouri 

■ 2. In § 52.1320, the table in paragraph 

(e) is amended by adding the entry 

‘‘(80)’’ in numerical order to read as 

follows: 

§ 52.1320 Identification of plan. 

* * * * * 

(e) * * * 

EPA-APPOVED MISSOURI NONREGULATORY SIP PROVISIONS

Name of 

nonregulatory SIP provision 

Applicable 

geographic or 

nonattainment area 

State submittal 

date EPA approval date Explanation 

*******

(80) Revisions to St. Louis 1997 

PM2.5 Maintenance Plan.

St. Louis Area: Missouri counties 

of Franklin, Jefferson, St. 

Charles, and St. Louis along with 

the City of St. Louis.

11/12/2019 [Date of publication of the final rule 

in the Federal Register], 

[Federal Register citation of the 

final rule].

This action replaces the Maintenance plan for the 1997 PM2.5

(83 FR 38033) [EPA–R07–OAR– 

2017–0734; FRL 9981–29–Region 7]. 

[FR Doc. 2021–15730 Filed 7–27–21; 8:45 am] 

BILLING CODE 6560–50–P 


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