SUPPLEMENTARY INFORMATION:

Throughout this document “we,” “us,” and “our” refer to EPA.

Table of Contents

I. What is Being Addressed in this Document?

II. Have the Requirements for Approval of a SIP Revision Been Met?

III. Environmental Justice Concerns

IV. What Action is the EPA Taking?

V. Incorporation by Reference

VI. Statutory and Executive Order Reviews

I. What is being addressed in this document?

The EPA is taking final action pursuant to section 110(l) of the CAA, to amend the Missouri SIP to approve Missouri's SIP revision request as submitted to the EPA on October 7, 2020. The EPA's final approval is based on its review of the state's submittal which is described in detail in the proposal (87 FR 5761, February 2, 2022).

For the reasons described in detail in the EPA's February 2, 2022 proposed approval, the EPA finds that Missouri's 2020 plan and 2020 Consent Agreement, as submitted to the EPA on October 7, 2020, as a replacement to the 2004 plan and 2003 Settlement Agreement, does not interfere with attainment or maintenance of the NAAQS, and thus satisfies CAA section 110(l). If future activities include demolition or deconstruction of any of the remaining structures, the 2020 Plan and 2020 Consent Agreement provide for re-instating air monitors to ensure that deconstruction or demolition of the facility, activities that are known to re-entrain lead dust, do not lead to violations of the 2008 Lead NAAQS, and thereby protect human health and the environment. All the requirements of the 2020 Consent Agreement are also imposed on Doe Run's successors in the event of a future property transaction.

Upon the effective date of this final rule Doe Run may cease operating its ambient air monitors at the Glover facility. For the reasons discussed in detail in the EPA's proposal, lead emissions from the facility are not expected to increase provided that activities remain the same and Doe Run (and any future owner) complies with the requirements of the state and federally enforceable 2020 Consent Agreement. In the event that activities at the facility do change, the 2020 Consent Agreement provides a process for resuming monitoring should certain lead-emitting activities occur at the facility. This requirement to resume monitoring provides an additional measure to ensure continued attainment of both the 1978 NAAQS and the 2008 NAAQS.

II. Have the requirements for approval of a SIP revision been met?

The State's submission 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. In addition, as explained in the February 2, 2022 proposal, the revision meets the substantive SIP requirements of the CAA, including section 110 and implementing regulations.

The EPA's proposed approval and supporting information contained in the docket were made available for public review and comment from February 2, 2022 to March 4, 2022. No comments were received.

III. Environmental justice concerns

This action addresses a plan for continued attainment of the 2008 Lead NAAQS for the Glover, Missouri area. In its SIP revision request, Missouri has demonstrated that the air quality in the Glover area is attaining the 2008 Lead NAAQS and will ensure continued attainment of the NAAQS as the benchmark for protection of human health. Replacing the 2004 maintenance plan and 2003 Settlement Agreement with the 2020 Plan and 2020 Consent Agreement provides broader provisions for the activities, including deconstruction and demolition, that are most likely to cause a future NAAQS violation. For these reasons, EPA believes final approval does not result in disproportionately high and adverse human health or environmental effects on minority populations, low-income populations and/or indigenous peoples.

IV. What action is the EPA taking?

The EPA is approving Missouri's request to strengthen the State Implementation Plan (SIP) by removing its maintenance plan and associated Consent Agreement for the 1978 Lead NAAQS for the former Doe Run Glover lead smelter in Iron County, Missouri, and replacing it with a plan for continued attainment of the 2008 Lead NAAQS and a new Consent Agreement.

V. Incorporation by Reference

In this document, the EPA is finalizing regulatory text that includes incorporation by reference. In accordance with requirements of 1 CFR 51.5, the EPA is finalizing the incorporation by reference of the Missouri Source-Specific Orders described in the amendments to 40 CFR part 52 set forth below. The EPA has made, and will continue to make, these materials generally available through 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).

Therefore, these materials have been approved by the EPA for inclusion in the State implementation plan, have been incorporated by reference by EPA into that plan, and are fully federally enforceable under sections 110 and 113 of the CAA as of the effective date of the final rulemaking of the EPA's approval, and will be incorporated by reference in the next update to the SIP compilation.^[1]

Also, in this document, as described in the amendments to 40 CFR part 52 set forth below, the EPA is removing provisions of the EPA-Approved Missouri Source-Specific Permits and Orders from the Missouri State Implementation Plan, which is incorporated by reference in accordance with the requirements of 1 CFR part 51.

VI. 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, 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 ( printed page 24872) affect small governments, as described in the Unfunded Mandates Reform Act of 1995 (Pub. L. 104-4);
• Does not have federalism implications as specified inExecutive Order 13132 (64 FR 43255, August 10, 1999);
• Is not an economically significant regulatory action based on health or safety risks subject toExecutive Order 13045 (62 FR 19885, April 23, 1997);
• Is not a significant regulatory action subject toExecutive 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
• This action does not have disproportionately high and adverse human health or environmental effects on minority populations, low-income populations and/or indigenous peoples, as specified inExecutive Order 12898 (59 FR 7629, February 16, 1994). The basis for this determination is contained in section III of this action, “Environmental Justice Concerns.”
• In addition, 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. 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 byExecutive Order 13175 (65 FR 67249, November 9, 2000).
• This action is subject to the Congressional Review Act, 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
• 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 June 27, 2022. Filing a petition for reconsideration by the Administrator of this final rule does not affect the finality of this action for the purposes of judicial review nor does it extend the time within which a petition for judicial review may be filed and shall not postpone the effectiveness of such rule or action. This action may not be challenged later in proceedings to enforce its requirements (see section 307(b)(2)).

For the reasons stated in the preamble, the EPA amends 40 CFR part 52 as set forth below:

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

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

2. In § 52.1320:

a. In the table in paragraph (d):

i. Remove and reserve paragraph (d)(22) and add paragraph (d)(36).

b. In the table in paragraph (e):

i. Remove and reserve paragraph (e)(49) and add paragraph (e)(83).

The additions read as follows:

87 FR 24870