Document ID: EPA-R07-OAR-2023-0199-0001
Agency: epa
Document Type: Proposed Rule
Title: Air Quality State Implementation Plans; Approvals and Promulgations: Missouri; Control of Emissions from Existing Municipal Solid Waste Landfills; Designated Facilities and Pollutants
Posted Date: 2023-08-21T04:00Z

[Federal Register Volume 88, Number 160 (Monday, August 21, 2023)]
[Proposed Rules]
[Pages 56787-56791]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2023-17690]

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ENVIRONMENTAL PROTECTION AGENCY

40 CFR Parts 52 and 62

[EPA-R07-OAR-2023-0199; FRL-10830-01-R7]

Approval of State Plans for Designated Facilities and Pollutants; 
MO; Approval and Promulgation of Implementation Plans; Control of 
Emissions From Existing Municipal Solid Waste Landfills

AGENCY: Environmental Protection Agency (EPA).

ACTION: Proposed rule.

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SUMMARY: The Environmental Protection Agency (EPA) is proposing to 
approve a Clean Air Act (CAA) plan and two state rules submitted by the 
Missouri Department of Natural Resources (MoDNR) on July 25, 2022. This 
plan was submitted to fulfill the state's obligations under the CAA to 
implement and enforce the requirements of the Emissions Guidelines and 
Compliance Times for municipal solid waste (MSW) landfills. This plan 
includes an inventory of affected sources and explains how the state 
rules fulfill the regulatory requirements needed for EPA to approve the 
plan. In addition, the EPA is proposing to approve a revision to the 
State Implementation Plan (SIP) submitted by MoDNR for the purpose of 
revising the Missouri rule entitled ``Municipal Solid Waste Landfills'' 
to incorporate by reference Emission Guidelines (EG) for MSW landfills. 
EPA is proposing to approve this SIP revision based on EPA's finding 
that the rule is as stringent as the rule it replaces and fulfills the 
requirements of the CAA for the protection of the ozone National 
Ambient Air Quality Standards (NAAQS) in St. Louis.

DATES: Comments must be received on or before September 20, 2023.

ADDRESSES: You may send comments, identified by Docket ID No. EPA-R07-
OAR-2023-0199 to 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 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: Allyson Prue, Environmental Protection 
Agency, Region 7 Office, Air Permitting and Planning Branch, 11201 
Renner Boulevard, Lenexa, Kansas 66219; telephone number: (913) 551-
7277; email address: [email protected].

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. CAA 111(d) and Landfill Emission Guidelines Background
IV. Background for Missouri's Municipal Solid Waste Landfill Rule 
for the St. Louis Ozone Nonattainment Area
V. Summary and Analysis of the 111(d) Plan Submittal
VI. Summary and Analysis of Missouri's SIP Revision
VII. Proposed Action
VIII. Incorporation by Reference
IX. Statutory and Executive Order Review

I. Written Comments

    Submit your comments, identified by Docket ID No. EPA-R07-OAR-2023-
0199, at 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

[[Page 56788]]

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 www.epa.gov/dockets/commenting-epa-dockets.

II. What is being addressed in this document?

    EPA is proposing to approve Missouri's section 111(d) State Plan 
for Existing MSW Landfills (Missouri's section 111(d) State Plan) and 
two state rules accompanying the plan pursuant to 40 CFR part 60, 
subparts B and Cf. Missouri state rule 10 Code of State Regulations 
(CSR) 10-6.310 ``Restriction of Emissions from Municipal Solid Waste 
Landfills'' (which covers all areas of Missouri except St. Louis) and 
10 CSR 10-5.490 ``Municipal Solid Waste Landfills'' (which covers the 
St. Louis area) provide the enforceable portion of Missouri's section 
111(d) State Plan. The state rules incorporate by reference the federal 
plan located at 40 CFR part 62, subpart OOO as the underlying rule 
which implements and enforces the applicable provisions under the 2016 
MSW landfill EG at 40 CFR part 60, subpart Cf.
    As part of this action, EPA is also proposing to approve the 
revision to 10 CSR 10-5.490, which implements the 2016 MSW landfill EG 
at more stringent thresholds in the St. Louis ozone nonattainment area, 
into Missouri's SIP. EPA's proposed approval of 10 CSR 10-5.490 is in 
accordance with section 110 of the CAA and 40 CFR part 51.
    EPA's detailed rationale and discussion concerning Missouri's 
section 111(d) State Plan, including the revisions to 10 CSR 10-6.310 
and 10 CSR 10-5.490 can be found in the EPA Technical Support Document 
(TSD), located in the docket for this rulemaking.

III. CAA 111(d) and Landfill Emission Guidelines Background

    Section 111 of the CAA, ``Standards of Performance for New 
Stationary Sources,'' directs the EPA to establish emission standards 
for stationary sources of air pollution that could potentially endanger 
public health or welfare. These standards are referred to as New Source 
Performance Standards (NSPS). Section 111(b) directs EPA to publish and 
periodically revise a list of categories of stationary sources which 
cause or significantly contribute to air pollution, and to establish 
NSPS within these categories. Section 111(b)(1)(B) applies to new 
sources.
    When NSPS are promulgated for new sources, section 111(d) and EPA 
regulations require that the EPA publish an Emission Guideline (EG) to 
regulate the same pollutants from existing facilities. Section 111(d) 
addresses the process by which the EPA and states regulate standards of 
performance for existing sources belonging to those categories 
established in section 111(b). While NSPS are directly applicable to 
new sources, EGs for existing sources (designated facilities) are 
intended for states to use to develop a state plan to submit to the 
EPA.
    EPA established requirements for state plan submittals in 40 CFR 
part 60, subpart B. State submittals under CAA section 111(d) must be 
consistent with the relevant emission guidelines, in this instance 40 
CFR part 60, subpart Cf, and the requirements of 40 CFR part 60, 
subpart B, and 40 CFR part 62, subpart A. If the state plan is complete 
and approvable with reference to these requirements, EPA notifies the 
public, promulgates the plan pursuant to 40 CFR part 62, and delegates 
implementation and enforcement of the standards and requirements of the 
emission guidelines to the state under the terms of the state plan as 
published in the CFR. Once approved by the EPA, the state plan becomes 
federally enforceable. If a State does not submit an approvable state 
plan to the EPA, the EPA is responsible for developing, implementing, 
and enforcing a Federal plan.
    The MSW landfills NSPS for new landfills and EG for existing 
landfills were first promulgated by the EPA on March 12, 1996, in 40 
CFR part 60, subparts WWW and Cc, respectively (61 FR 9905). We first 
approved Missouri's section 111(d) plan for MSW landfills on April 24, 
1998 (63 FR 20320). On August 29, 2016, EPA finalized revised Standards 
of Performance for new MSW landfills and Emission Guidelines and 
Compliance Times for Existing MSW Landfills (2016 MSW Landfills EG) in 
40 CFR part 60, subparts XXX and Cf, respectively (81 FR 59331 and 81 
FR 59275). The 2016 MSW Landfills EG revision updates the control 
requirements and monitoring, reporting, and recordkeeping provisions 
for existing MSW landfill sources.
    On May 21, 2021, EPA finalized a federal plan to implement the 2016 
MSW Landfills EG where state plans were not in effect (86 FR 27756). On 
July 25, 2022, MoDNR submitted to EPA a formal section 111(d) plan and 
two state rules for existing MSW landfills. These rules are 10 CSR 10-
6.310 ``Restriction of Emissions from Municipal Solid Waste Landfills'' 
(which covers all areas of Missouri except St. Louis) and 10 CSR 10-
5.490 ``Municipal Solid Waste Landfills'' (which covers the St. Louis 
area). The state rules incorporate by reference the federal plan 
located at 40 CFR part 62, subpart OOO to use as the underlying rule 
which implements and enforces the applicable provisions under the 2016 
MSW landfill EG at 40 CFR part 60, subpart Cf.
    For the reasons discussed below, EPA proposes to find that 
Missouri's section 111(d) State Plan meets the relevant requirements of 
the CAA section 111(d) implementing regulations at 40 CFR part 60, 
subpart B and 40 CFR part 60, subpart Cf.

IV. Background for Missouri's Municipal Solid Waste Landfill Rule for 
the St. Louis Ozone Nonattainment Area

    The St. Louis area was designated nonattainment for the 1-hour 
ozone standard in 1978 (43 FR 8962). On November 6, 1991, the EPA 
promulgated a regulation which classified the St. Louis area as a 
moderate ozone nonattainment area (56 FR 56694). The nonattainment area 
consisted of Madison, Monroe, and St. Claire counties in Illinois; and 
Franklin, Jefferson, St. Charles, and St. Louis counties and St. Louis 
City in Missouri. The St. Louis area is currently designated 
nonattainment for the 8-hour (2015) ozone standard (83 FR 25776 \1\).
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    \1\ The 2015 8-hour ozone nonattainment designation included 
part of Franklin County (Boles Township), St. Charles County, St. 
Louis County, and the City of St. Louis in Missouri, and Madison and 
St. Clair counties in Illinois.
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    Section 182(b)(1)(A) of the Act requires that each state in which 
all or part of a moderate ozone nonattainment area is located submit a 
SIP revision providing for a 15 percent reduction in emissions of 
volatile organic compounds. These plans are commonly referred to as 
Rate of Progress Plans (ROPP).
    EPA approved Missouri's 15 percent ROPP on May 18, 2000 (65 FR 
31485). Missouri's 15 percent ROPP included state rule 10 CSR 10-5.490, 
``Control of Emissions from Municipal Solid Waste Landfills,'' that 
required the use of gas collection systems to reduce VOC emissions by 
98% at six municipal solid waste landfills in the St. Louis area. The 
rule has been subsequently revised to maintain consistency with federal 
requirements, with the most recent

[[Page 56789]]

revision approved by EPA on April 15, 2014 (79 FR 21187).
    Missouri revised 10 CSR 10-5.490 to implement the 2016 MSW landfill 
EG at more stringent thresholds in the St. Louis ozone nonattainment 
area and submitted the rule to EPA for approval as part of Missouri's 
section 111(d) State Plan and for approval as a revision to Missouri's 
SIP in accordance with section 110 of the CAA. For the reasons 
discussed below, EPA proposes to find that Missouri's submission meets 
the applicable requirements of section 110 of the CAA and 40 CFR part 
51.

V. Summary and Analysis of the 111(d) Plan Submittal

    The EPA has reviewed Missouri's section 111(d) State Plan in the 
context of the plan completeness and approvability requirements of 40 
CFR part 60, subparts B and Cf, and part 62, subpart A. EPA's detailed 
rationale and discussion concerning Missouri's section 111(d) State 
Plan can be found in the EPA TSD located in the docket for this 
rulemaking. As detailed in the TSD, the state followed all applicable 
administrative procedures in proposing and adopting these rule and plan 
actions in accordance with 40 CFR parts 60, subpart B, Sec. Sec.  60.23 
through 60.26.
    Included within Missouri's section 111(d) State Plan are revisions 
to 10 CSR 10-5.490 ``Municipal Solid Waste Landfills''; and 10 CSR 10-
6.310 ``Restriction of Emissions from Municipal Solid Waste 
Landfills''. These state rules incorporate by reference the new federal 
emissions thresholds and compliance schedules (40 CFR part 62, subpart 
OOO) for MSW landfills that accepted waste after November 8, 1987, and 
commenced construction, reconstruction, or modification before July 17, 
2014.
    Missouri's section 111(d) State Plan further describes how each 
requirement of the federal regulations is met by the state plan and 
rules. One element of this plan is the required inventory of affected 
landfills in the state. This inventory is contained in Table 1 of the 
state's submission which is included in the docket for this action. The 
state also met the public notice requirements for the plan and rules as 
demonstrated in Chapter 11 of the state's submittal. Table 2 of the 
state plan includes the compliance schedule for existing MSW landfills 
which is identical to the federal plan.
    As required by 40 CFR 60.24, Missouri identified 10 CSR 10-5.490 
and 10 CSR 10-6.310 as the enforceable state mechanisms that implement 
the MSW EGs. The state rules apply to each MSW landfill that has 
accepted waste at any time since November 8, 1987 or has additional 
design capacity available for future waste deposition, and that 
commenced construction, reconstruction, or modification on or before 
July 17, 2014. The state rules reference the appropriate section of 40 
CFR part 62, subpart OOO for each relevant requirement such as 
compliance times, test methods, monitoring, recordkeeping and 
reporting. The provisions of 40 CFR part 62, subpart OOO are consistent 
with the requirements of 40 CFR part 60, subpart Cf. EPA finds this 
method of directly referencing federal regulations for each requirement 
sufficient to ensure the accurate version of requirements is referenced 
for affected facilities.
    EPA continues to retain the following authorities that are not 
delegable to state agencies as described in 40 CFR 62.16710(b): 
Approval of alternative methods to determine the site-specific 
nonmethane organic compounds (NMOC) concentration or a site-specific 
methane generation rate constant (k); Alternative emission standards; 
Major alternatives to test methods (Major alternatives to test methods 
or to monitoring are modifications made to a federally enforceable test 
method or to a Federal monitoring requirement that may involve the use 
of unproven technology or modified procedures or an entirely new 
method); and waivers of recordkeeping. If a design plan includes 
alternative requests under 40 CFR 62.16710(b), MoDNR must forward the 
design plan to EPA for review and approval prior to its action on the 
design plan.
    State rule 10 CSR 10-5.490 applies to the St. Louis area, 
consisting of St. Louis City and Franklin, Jefferson, St. Charles, and 
St. Louis Counties. The requirements contained in state rule 10 CSR 10-
5.490 are identical to 40 CFR part 62, subpart OOO except that the 
state rule implements a smaller landfill size limit and a lower 
emission cutoff limit that triggers requirements for a landfill gas 
collection and control system (GCCS). State rule 10 CSR 10-6.310 
applies statewide to affected facilities. Landfills in the St. Louis 
area covered by 10 CSR 10-5.490 are exempt from this statewide rule. 
The requirements in the state rule are identical to 40 CFR part 62, 
subpart OOO.
    The Missouri submittal package includes all materials necessary to 
be deemed administratively and technically complete according to the 
criteria of 40 CFR 60.27. Missouri notified the public on December 27, 
2021 concerning the proposed 111(d) plan and held a public hearing on 
January 27, 2022. The state's public comment period opened on December 
27, 2021 and closed on February 3, 2022.

VI. Summary and Analysis of Missouri's SIP Revision

    Missouri revised 10 CSR 10-5.490 to implement the 2016 MSW landfill 
EG at more stringent thresholds in the St. Louis ozone nonattainment 
area. The emission standards and compliance schedules from 40 CFR part 
62, subpart OOO are incorporated by reference into 10 CSR 10-5.490. The 
requirements that apply to existing MSW landfills with design 
capacities equal to or greater than 2.5 million Mg and 2.5 million m\3\ 
in subpart OOO apply to MSW landfills in the St. Louis area if their 
design capacities are 1.0 million Mg and 1.0 million m\3\. The emission 
threshold at which landfills must install and operate GCCS in the St. 
Louis area rule is 25 Mg per year, as opposed to 34 Mg per year (50 Mg 
per year for closed landfills) in subpart OOO. The lower thresholds in 
10 CSR 10-5.490 also apply to closed landfills that seek to discontinue 
their GCCS.
    The lower design capacity thresholds and emission thresholds in the 
revision to 10 CSR 10-5.490 are identical to the design capacity 
thresholds and emission thresholds previously approved into the SIP by 
EPA and as part of Missouri's 15 Percent Rate of Progress Plan. 
Missouri's incorporation by reference of 40 CFR part 62, subpart OOO 
imposes more stringent requirements on existing landfills in the St. 
Louis area than those imposed on landfills under the previously SIP-
approved version of 10 CSR 10-5.490. As such, EPA proposes to find that 
the revisions to 10 CSR 10-5.490 do not interfere with any applicable 
requirement concerning attainment and reasonable further progress or 
any other applicable requirement of the CAA and are therefore 
consistent with the requirements of section 110(l) of the CAA.
    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 December 27, 
2021 to February 3, 2022 and held a public hearing on January 27, 2022. 
The State received one comment on 10 CSR 10-5.490 concerning 
incorporation by reference of federal requirements and modified the 
rule in response.
    As explained above and in more detail in the TSD, which is part of 
this

[[Page 56790]]

docket, the revision meets the substantive SIP requirements of the CAA, 
including section 110 and implementing regulations. In accordance with 
section 110 of the CAA and 40 CFR part 51, EPA is proposing to approve 
10 CSR 10-5.490 into Missouri's SIP.

VII. Proposed Action

    The EPA is proposing to determine that Missouri's section 111(d) 
State Plan and associated state rules satisfy the requirements of 40 
CFR part 60, subparts B and Cf.
    The EPA is proposing to approve the Missouri section 111(d) plan 
and the two state rules for MSW landfills pursuant to 40 CFR part 60, 
subparts B and Cf. Therefore, EPA is proposing to amend 40 CFR part 62, 
subpart AA, to reflect this action. The EPA's final approval of 
Missouri's section 111(d) plan will result in the replacement of the 
federal plan currently in place in the State of Missouri with the state 
plan being proposed for approval. The state plan does not extend any 
reporting or compliance deadlines stipulated in the current federal 
plan.
    The EPA is also proposing to approve the July 30, 2022 state 
effective version of 10 CSR 10-5.490, which incorporates requirements 
established in EPA's updated Emission Guidelines, into the Missouri SIP 
replacing the prior SIP-approved version of the state rule. EPA is 
proposing to amend 40 CFR part 52, subpart AA, to reflect this action.
    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.

VIII. Incorporation by Reference

    In this document, EPA is proposing to include regulatory text in an 
EPA final rule that includes incorporation by reference. In accordance 
with requirements of 1 CFR 51.5, EPA is proposing to incorporate by 
reference Missouri state rules 10 CSR 10-5.490 and 10 CSR 10-6.310, 
effective July 30, 2022, which regulate municipal solid waste 
landfills, as discussed in detail in Section V. of this preamble, into 
40 CFR part 62. EPA is also proposing to incorporate by reference 
Missouri state rule 10 CSR 10-5.490, state effective July 30, 2022, 
which regulates municipal solid waste landfills in the St. Louis area, 
as discussed in detail in Section VI. of this preamble, into 40 CFR 
part 52. EPA has made, and will continue to make, these materials 
generally available through the docket for this action, EPA-R07-OAR-
2023-0199, at www.regulations.gov and at the EPA Region 7 Office 
(please contact the person identified in the FOR FURTHER INFORMATION 
CONTACT section of this preamble for more information).

IX. Statutory and Executive Order Review

    Under the CAA, the Administrator is required to approve a SIP 
submission that complies with the provisions of the CAA and applicable 
Federal regulations. 42 U.S.C. 7410(k); 40 CFR 52.02(a). Under the CAA, 
the Administrator is required to approve a CAA section 111(d) 
submission that complies with the provisions of the CAA and applicable 
Federal regulations. 42 U.S.C. 7411(d); 42 U.S.C. 7429; 40 CFR part 60, 
subparts B and Cf; and 40 CFR part 62, subparts A and OOO. Thus, in 
reviewing CAA section 111(d) state plan submissions and SIP 
submissions, the EPA's role is to approve state choices provided that 
they meet the minimum criteria of the CAA. Accordingly, this proposed 
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); and
     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 Clean Air Act;
    In addition, the SIP and the CAA section 111(d) submission 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).
    Executive Order 12898 (Federal Actions To Address Environmental 
Justice in Minority Populations and Low-Income Populations, 59 FR 7629, 
Feb. 16, 1994) directs Federal agencies to identify and address 
``disproportionately high and adverse human health or environmental 
effects'' of their actions on minority populations and low-income 
populations to the greatest extent practicable and permitted by law. 
EPA defines environmental justice (EJ) as ``the fair treatment and 
meaningful involvement of all people regardless of race, color, 
national origin, or income with respect to the development, 
implementation, and enforcement of environmental laws, regulations, and 
policies.'' EPA further defines the term fair treatment to mean that 
``no group of people should bear a disproportionate burden of 
environmental harms and risks, including those resulting from the 
negative environmental consequences of industrial, governmental, and 
commercial operations or programs and policies.''
    MoDNR did not evaluate environmental justice considerations as part 
of its 111(d) plan and SIP submittal; the CAA and applicable 
implementing regulations neither prohibit nor require such an 
evaluation. EPA did not perform an EJ analysis and did not consider EJ 
in this action. Due to the nature of the action being taken here, this 
action is expected to have a neutral to positive impact on the air 
quality of the affected area. Consideration of EJ is not required as 
part of this action, and there is no information in the record 
inconsistent with the stated goal of E.O. 12898 of achieving 
environmental justice for people of color, low-income populations, and 
Indigenous peoples.

List of Subjects

40 CFR Part 52

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

[[Page 56791]]

40 CFR Part 62

    Environmental protection, Administrative practice and procedure, 
Air pollution control, Incorporation by reference, Intergovernmental 
relations, Reporting and recordkeeping requirements.

    Dated: August 11, 2023.
Meghan A. McCollister,
Regional Administrator, Region 7.

    For the reasons stated in the preamble, the EPA proposes to amend 
40 CFR parts 52 and 62 as set forth below:

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 AA-Missouri

0
2. In Sec.  52.1320, the table in paragraph (c) is amended by revising 
the entry ``10-5.490'' to read as follows:

Sec.  52.1320  Identification of plan.

* * * * *
    (c) * * *

                                        EPA-Approved Missouri Regulations
----------------------------------------------------------------------------------------------------------------
    Missouri citation              Title         State effective date    EPA approval date       Explanation
----------------------------------------------------------------------------------------------------------------
                                    Missouri Department of Natural Resources
----------------------------------------------------------------------------------------------------------------
 
                                                  * * * * * * *
----------------------------------------------------------------------------------------------------------------
   Chapter 5--Air Quality Standards and Air Pollution Control Regulations for the St. Louis Metropolitan Area
----------------------------------------------------------------------------------------------------------------
 
                                                  * * * * * * *
10-5.490.................  Municipal Solid       July 30, 2022.......  [Date of publication  ...................
                            Waste Landfills.                            of the final rule
                                                                        in the Federal
                                                                        Register], [Federal
                                                                        Register citation
                                                                        of the final rule].
 
                                                  * * * * * * *
----------------------------------------------------------------------------------------------------------------

* * * * *

PART 62--APPROVAL AND PROMULGATION OF STATE PLANS FOR DESIGNATED 
FACILITIES AND POLLUTANTS

0
3. The authority citation for part 62 continues to read as follows:

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

Subpart AA--Missouri Air Emissions From Existing Municipal Solid 
Waste Landfills

0
4. Revise Sec.  62.6357 to read as follows:

Sec.  62.6357  Missouri Department of Natural Resources.

    (a) Identification of plan. Missouri plan for control of landfill 
gas emissions from existing municipal solid waste landfills and 
associated state regulations submitted on January 26, 1998, with 
amendments on September 8, 2000, February 9, 2012, and July 25, 2022. 
The plan includes the regulatory provisions cited in paragraph (d) of 
this section, which EPA incorporates by reference.
    (b) Identification of sources. The plan applies to all existing 
municipal solid waste landfills for which construction, reconstruction, 
or modification was commenced before May 30, 1991, that accepted waste 
at any time since November 8, 1987, or that have additional capacity 
available for future waste deposition, and have design capacities 
greater than 2.5 million megagrams and nonmethane organic emissions 
greater than 50 megagrams per year, as described in 40 CFR part 60, 
subpart Cc.
    (c) Effective date. The effective date of the plan for municipal 
solid waste landfills is June 23, 1998. The amendments are effective 
January 16, 2001, May 30, 2012, and [date 30 days after date of 
publication of the final rule in the Federal Register], respectively.
    (d) Incorporation by reference. (1) The material incorporated by 
reference in this section was approved by the Director of the Federal 
Register Office in accordance with 5 U.S.C. 552(a) and 1 CFR part 51. 
Copies of the material may be inspected or obtained from the EPA Region 
7 office, 11201 Renner Boulevard, Lenexa, Kansas 66219, 913-551-7003, 
or from the source in paragraph (d)(2) of this section. Copies may be 
inspected at the National Archives and Records Administration (NARA). 
For information on the availability of this material at NARA, visit 
www.archives.gov/federal-register/cfr/ibr-locations.html or email 
[email protected].
    (2) State of Missouri, 600 West Main Street, Jefferson City, 
Missouri 65101, 573-751-4015.
    (i) 10 CSR 10-5.490, Municipal Solid Waste Landfills, effective 
July 30, 2022.
    (ii) 10 CSR 10-6.310, Restriction of Emissions from Municipal Solid 
Waste Landfills, effective July 30, 2022.

[FR Doc. 2023-17690 Filed 8-18-23; 8:45 am]
BILLING CODE 6560-50-P