Approval and Promulgation of Implementation Plans; Montana; Butte PM10, 33547-33549 [2021-13618]

Download as PDF 33547 Federal Register / Vol. 86, No. 120 / Friday, June 25, 2021 / Rules and Regulations EPA-APPROVED IOWA REGULATIONS—Continued State effective date Iowa citation Title * 567–33.3 ........... * * Special Construction Permit Requirements for Major Stationary Sources in Areas Designated Attainment or Unclassified (PSD). * * * * * * * * 3. The authority citation for part 70 continues to read as follows: ■ Authority: 42 U.S.C. 7401, et seq. 4. In appendix A to part 70 the entry for ‘‘Iowa’’ is amended by adding paragraph (w) to read as follows: ■ Appendix A to Part 70—Approval Status of State and Local Operating Permits Programs * * * * * * * * Iowa * (w) The Iowa Department of Natural Resources submitted for program approval revisions to rules 567–22.100, 567–22.120, 567–22.105(1), 567–22.106(2), and 567– 22.128(4). The state effective date for 567– 22.105(1) and 567–22.106(2) is April 17, 2019. The state effective date for 567–22.100, 567–22.120, and 567–22.128(4) is July 22, 2020. This revision is effective August 24, 2021. * * * * * [FR Doc. 2021–13456 Filed 6–24–21; 8:45 am] BILLING CODE 6560–50–P ENVIRONMENTAL PROTECTION AGENCY 40 CFR Parts 52 and 81 lotter on DSK11XQN23PROD with RULES1 [EPA–R08–OAR–2020–0741; FRL–10025– 27–Region 8] Approval and Promulgation of Implementation Plans; Montana; Butte PM10 Nonattainment Area Limited Maintenance Plan and Redesignation Request Environmental Protection Agency (EPA). AGENCY: VerDate Sep<11>2014 17:35 Jun 24, 2021 Jkt 253001 Explanation * 6/25/2021, [insert Federal Register citation]. * * Provisions of the 2010 PM2.5 PSD—Increments, SILs and SMCs rule, published in the Federal Register on October 20, 2010, relating to SILs and SMCs that were affected by the January 22, 2013, U.S. Court of Appeals decision are not, at the state’s request, included in Iowa’s SIP provisions (see Federal Register, March 14, 2014) (Vol. 79, No. 50). * ACTION: PART 70—STATE OPERATING PERMIT PROGRAMS * * 7/22/2020 EPA approval date * Final rule. The Environmental Protection Agency (EPA) is approving the Limited Maintenance Plan (LMP) submitted by the State of Montana to EPA on March 23, 2020, for the Butte Moderate nonattainment area (NAA) for particulate matter with an aerodynamic diameter less than or equal to a nominal 10 micrometers (PM10) and concurrently redesignate the NAA to attainment for the 24-hour PM10 National Ambient Air Quality Standard (NAAQS). In order to approve the LMP and redesignation, EPA determined that the Butte, MT NAA has attained the 1987 24-hour PM10 NAAQS of 150 mg/m3. This determination is based upon monitored air quality data for the PM10 NAAQS during the years 2014 through 2018. The EPA is taking this action pursuant to the Clean Air Act (CAA). DATES: This rule is effective on July 26, 2021. ADDRESSES: The EPA has established a docket for this action under Docket ID No. EPA–R08–OAR–2020–0741. All documents in the docket are listed on the https://www.regulations.gov website. Although listed in the index, some information is not publicly available, e.g., 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 https:// www.regulations.gov, or please contact the person identified in the FOR FURTHER INFORMATION CONTACT section for additional availability information. FOR FURTHER INFORMATION CONTACT: Kate Gregory, Air and Radiation Division, U.S. Environmental Protection Agency SUMMARY: PO 00000 Frm 00069 Fmt 4700 Sfmt 4700 * * (EPA), Region 8, Mail Code 8P–ARD– QP, 1595 Wynkoop Street, Denver, Colorado 80202–1129, telephone number: (303) 312–6175, email address: gregory.kate@epa.gov. SUPPLEMENTARY INFORMATION: Throughout this document ‘‘we,’’ ‘‘us,’’ and ‘‘our’’ means the EPA. I. Background The background for this action is discussed in detail in our April 19, 2021 proposal (86 FR 20353). In that document, we proposed to approve the LMP for the Butte NAA and the State’s request to redesignate the Butte NAA from nonattainment to attainment for the 1987 24-hour PM10 NAAQS. Additionally, we proposed to determine that the Butte NAA has attained the NAAQS for PM10. That determination was based upon monitored air quality data for the PM10 NAAQS during the years 2014 through 2018. Finally, in our April 19, 2021 proposal, EPA proposed to approve the Butte LMP as meeting the appropriate transportation conformity requirements found in 40 CFR part 93, subpart A. The public comment period on the EPA’s proposed rule opened on April 19, 2021, the date of its publication in the Federal Register (86 FR 20353) and closed on May 19, 2021. During this time, the EPA received two comments, both in support of this action and neither require response to comment. II. Final Action For the reasons explained in our proposed action, we are approving the LMP for the Butte NAA and the State’s request to redesignate the Butte NAA from nonattainment to attainment for the 1987 24-hour PM10 NAAQS. Additionally, the EPA is determining that the Butte NAA has attained the E:\FR\FM\25JNR1.SGM 25JNR1 33548 Federal Register / Vol. 86, No. 120 / Friday, June 25, 2021 / Rules and Regulations NAAQS for PM10. This determination is based upon monitored air quality data for the PM10 NAAQS during the years 2014 through 2018. The EPA is approving that the Butte LMP as meeting the appropriate transportation conformity requirements found in 40 CFR part 93, subpart A. III. 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 EPA is finalizing the incorporation by reference of maintenance plans for the Butte PM10 NAA and the Governor of Montana’s redesignation requests for the Butte PM10 NAAs to attainment. The EPA has made, and will continue to make, these materials generally available through www.regulations.gov and at the EPA Region 8 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 the EPA into that plan, 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 lotter on DSK11XQN23PROD with RULES1 IV. Statutory and Executive Order Reviews Under the Clean Air Act, 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 Clean Air Act. 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); 1 62 FR 27968 (May 22, 1997). VerDate Sep<11>2014 16:27 Jun 24, 2021 Jkt 253001 • 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. EPA will submit a report containing this action 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 PO 00000 Frm 00070 Fmt 4700 Sfmt 4700 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 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 August 24, 2021. 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)). List of Subjects 40 CFR Part 52 Environmental protection, Air pollution control, Carbon monoxide, Greenhouse gases, Incorporation by reference, Intergovernmental relations, Lead, Nitrogen dioxide, Ozone, Particulate matter, Reporting and recordkeeping requirements, Sulfur oxides, Volatile organic compounds. 40 CFR Part 81 Environmental protection, Air pollution control, National parks, and Wilderness areas. Authority: 42 U.S.C. 7401 et seq. Dated: June 21, 2021. Debra H. Thomas, Acting Regional Administrator, Region 8. 40 CFR parts 52 and 81 are 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 BB—Montana 2. In § 52.1370, the table in paragraph (e) is amended by adding the entry ‘‘Butte 1987 PM10 Limited Maintenance Plan’’ under the heading entitled ‘‘(8) Silver Bow County’’ at the end of the section to read as follows: ■ § 52.1370 * Identification of plan. * * (e) * * * E:\FR\FM\25JNR1.SGM 25JNR1 * * 33549 Federal Register / Vol. 86, No. 120 / Friday, June 25, 2021 / Rules and Regulations State effective date Title/subject * * * Notice of final rule date * NFR citation * * * (8) Silver Bow County * * * Butte 1987 PM10 Limited Maintenance Plan .................................... * * * 3. In § 52.1374, add paragraph (f) to read as follows: * 6/25/2021 * Control strategy: Particulate * * * * * (f) On March 23, 2020, the State of Montana submitted limited maintenance plans for the Butte PM10 nonattaiment areas and requested that this area be redesignated to attainment * * [insert Federal Register citation]. * for the PM10 National Ambient Air Quality Standards. The redesignation request and limited maintenance plans satisfy all applicable requirements of the Clean Air Act. ■ § 52.1374 matter. * ........................ PART 81—DESIGNATION OF AREAS FOR AIR QUALITY PLANNING PURPOSES * Authority: 42 U.S.C. 7401, et seq. Subpart C—Section 107 Attainment Status Designations 5. In § 81.327, the table entitled ‘‘Montana—PM–10’’ is amended by revising the entry ‘‘Silver Bow County, Butte’’ to read as follows: ■ § 81.327 4. The authority citation for part 81 continues to read as follows: ■ * * * Montana. * * Designation * Classification Designated area Date * * * * Silver Bow County, Butte ................................................................................. The following area of Butte-Silver Bow excluding the territorial limits of the City of Walkerville: Beginning at the Northwest corner of Section 2, T.3N., R.8W., thence Easterly to Northeast corner Section 5, T.3N., R.7W.; then Southerly to Northwest corner Section 9, T.3N., R.7W.; thence Easterly to Northeast corner Section 10, T.3N., R.7W.; thence Southerly to Southeast corner Section 22, T.2N., R.7W.; thence Westerly to Southwest corner Section 19, T.2N., R.7W.; thence Northerly to Northwest corner Section 19, T.2N., R.7W.; thence Westerly to Southwest corner Section 14, T.2N., R.8W.; thence Northerly to Southwest corner Section 35, T.3N., R.8W.; thence Westerly to Southwest corner Section 34, T.3N., R.8W.; thence Northerly to Northwest corner Section 27, T.3N., R.8W.; thence Westerly to Southwest corner Section 20, T.3N., R.8W.; thence Northerly to Northwest corner Section 17, T.3N., R.8W.; thence Easterly to Northwest corner Section 14, T.3N., R.8W.; thence Northerly to the point of beginning. * * * * * * * * [FR Doc. 2021–13618 Filed 6–24–21; 8:45 am] Type * 7/26/2021 Attainment. * * FEDERAL COMMUNICATIONS COMMISSION BILLING CODE 6560–50–P 47 CFR Part 54 [WC Docket No. 13–184; FCC 19–117; FRS 33027] lotter on DSK11XQN23PROD with RULES1 Modernizing the E-Rate Program for Schools and Libraries Federal Communications Commission. ACTION: Final rule; announcement of effective date. AGENCY: In this document, the Federal Communications Commission SUMMARY: VerDate Sep<11>2014 16:27 Jun 24, 2021 Jkt 253001 PO 00000 Frm 00071 Fmt 4700 Sfmt 4700 Date Type * * * * (Commission) announces that the Office of Management and Budget (OMB) has approved, for a period of three years, an information collection associated with the rules for the Universal Service Schools and Libraries program contained in the Commission’s Modernizing the E-Rate Program for Schools and Libraries Report and Order (Category Two Order), FCC 19–117. This document is consistent with the Category Two Order, which stated that the Commission would publish a document in the Federal Register announcing the effective date of the new information collection requirements. E:\FR\FM\25JNR1.SGM 25JNR1

Agencies

[Federal Register Volume 86, Number 120 (Friday, June 25, 2021)]
[Rules and Regulations]
[Pages 33547-33549]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2021-13618]


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ENVIRONMENTAL PROTECTION AGENCY

40 CFR Parts 52 and 81

[EPA-R08-OAR-2020-0741; FRL-10025-27-Region 8]


Approval and Promulgation of Implementation Plans; Montana; Butte 
PM10 Nonattainment Area Limited Maintenance Plan and Redesignation 
Request

AGENCY: Environmental Protection Agency (EPA).

ACTION: Final rule.

-----------------------------------------------------------------------

SUMMARY: The Environmental Protection Agency (EPA) is approving the 
Limited Maintenance Plan (LMP) submitted by the State of Montana to EPA 
on March 23, 2020, for the Butte Moderate nonattainment area (NAA) for 
particulate matter with an aerodynamic diameter less than or equal to a 
nominal 10 micrometers (PM10) and concurrently redesignate 
the NAA to attainment for the 24-hour PM10 National Ambient 
Air Quality Standard (NAAQS). In order to approve the LMP and 
redesignation, EPA determined that the Butte, MT NAA has attained the 
1987 24-hour PM10 NAAQS of 150 [mu]g/m\3\. This 
determination is based upon monitored air quality data for the 
PM10 NAAQS during the years 2014 through 2018. The EPA is 
taking this action pursuant to the Clean Air Act (CAA).

DATES: This rule is effective on July 26, 2021.

ADDRESSES: The EPA has established a docket for this action under 
Docket ID No. EPA-R08-OAR-2020-0741. All documents in the docket are 
listed on the https://www.regulations.gov website. Although listed in 
the index, some information is not publicly available, e.g., 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 https://www.regulations.gov, or please contact the person identified in the FOR 
FURTHER INFORMATION CONTACT section for additional availability 
information.

FOR FURTHER INFORMATION CONTACT: Kate Gregory, Air and Radiation 
Division, U.S. Environmental Protection Agency (EPA), Region 8, Mail 
Code 8P-ARD-QP, 1595 Wynkoop Street, Denver, Colorado 80202-1129, 
telephone number: (303) 312-6175, email address: [email protected].

SUPPLEMENTARY INFORMATION: Throughout this document ``we,'' ``us,'' and 
``our'' means the EPA.

I. Background

    The background for this action is discussed in detail in our April 
19, 2021 proposal (86 FR 20353). In that document, we proposed to 
approve the LMP for the Butte NAA and the State's request to 
redesignate the Butte NAA from nonattainment to attainment for the 1987 
24-hour PM10 NAAQS. Additionally, we proposed to determine 
that the Butte NAA has attained the NAAQS for PM10. That 
determination was based upon monitored air quality data for the 
PM10 NAAQS during the years 2014 through 2018. Finally, in 
our April 19, 2021 proposal, EPA proposed to approve the Butte LMP as 
meeting the appropriate transportation conformity requirements found in 
40 CFR part 93, subpart A.
    The public comment period on the EPA's proposed rule opened on 
April 19, 2021, the date of its publication in the Federal Register (86 
FR 20353) and closed on May 19, 2021. During this time, the EPA 
received two comments, both in support of this action and neither 
require response to comment.

II. Final Action

    For the reasons explained in our proposed action, we are approving 
the LMP for the Butte NAA and the State's request to redesignate the 
Butte NAA from nonattainment to attainment for the 1987 24-hour 
PM10 NAAQS. Additionally, the EPA is determining that the 
Butte NAA has attained the

[[Page 33548]]

NAAQS for PM10. This determination is based upon monitored 
air quality data for the PM10 NAAQS during the years 2014 
through 2018. The EPA is approving that the Butte LMP as meeting the 
appropriate transportation conformity requirements found in 40 CFR part 
93, subpart A.

III. 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 
EPA is finalizing the incorporation by reference of maintenance plans 
for the Butte PM10 NAA and the Governor of Montana's 
redesignation requests for the Butte PM10 NAAs to 
attainment. The EPA has made, and will continue to make, these 
materials generally available through www.regulations.gov and at the 
EPA Region 8 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 the EPA into that plan, 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\
---------------------------------------------------------------------------

    \1\ 62 FR 27968 (May 22, 1997).
---------------------------------------------------------------------------

IV. Statutory and Executive Order Reviews

    Under the Clean Air Act, 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 Clean Air Act. 
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. EPA will submit a report containing this action 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 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 August 24, 2021. 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)).

List of Subjects

40 CFR Part 52

    Environmental protection, Air pollution control, Carbon monoxide, 
Greenhouse gases, Incorporation by reference, Intergovernmental 
relations, Lead, Nitrogen dioxide, Ozone, Particulate matter, Reporting 
and recordkeeping requirements, Sulfur oxides, Volatile organic 
compounds.

40 CFR Part 81

    Environmental protection, Air pollution control, National parks, 
and Wilderness areas.

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

    Dated: June 21, 2021.
Debra H. Thomas,
Acting Regional Administrator, Region 8.

    40 CFR parts 52 and 81 are 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 BB--Montana

0
2. In Sec.  52.1370, the table in paragraph (e) is amended by adding 
the entry ``Butte 1987 PM10 Limited Maintenance Plan'' under 
the heading entitled ``(8) Silver Bow County'' at the end of the 
section to read as follows:


Sec.  52.1370  Identification of plan.

* * * * *
    (e) * * *

[[Page 33549]]



----------------------------------------------------------------------------------------------------------------
                                                 Notice of
        Title/subject              State        final rule                       NFR citation
                              effective date       date
----------------------------------------------------------------------------------------------------------------
 
                                                  * * * * * * *
----------------------------------------------------------------------------------------------------------------
                                              (8) Silver Bow County
----------------------------------------------------------------------------------------------------------------
 
                                                  * * * * * * *
Butte 1987 PM10 Limited       ..............       6/25/2021  [insert Federal Register citation].
 Maintenance Plan.
 
                                                  * * * * * * *
----------------------------------------------------------------------------------------------------------------


0
3. In Sec.  52.1374, add paragraph (f) to read as follows:


Sec.  52.1374  Control strategy: Particulate matter.

* * * * *
    (f) On March 23, 2020, the State of Montana submitted limited 
maintenance plans for the Butte PM10 nonattaiment areas and 
requested that this area be redesignated to attainment for the 
PM10 National Ambient Air Quality Standards. The 
redesignation request and limited maintenance plans satisfy all 
applicable requirements of the Clean Air Act.

PART 81--DESIGNATION OF AREAS FOR AIR QUALITY PLANNING PURPOSES

0
4. The authority citation for part 81 continues to read as follows:

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

Subpart C--Section 107 Attainment Status Designations

0
5. In Sec.  81.327, the table entitled ``Montana--PM-10'' is amended by 
revising the entry ``Silver Bow County, Butte'' to read as follows:


Sec.  81.327  Montana.

* * * * *

----------------------------------------------------------------------------------------------------------------
                                                Designation                           Classification
         Designated area         -------------------------------------------------------------------------------
                                       Date                Type                Date                Type
----------------------------------------------------------------------------------------------------------------
 
                                                  * * * * * * *
Silver Bow County, Butte........       7/26/2021  Attainment.
    The following area of Butte-
     Silver Bow excluding the
     territorial limits of the
     City of Walkerville:
     Beginning at the Northwest
     corner of Section 2, T.3N.,
     R.8W., thence Easterly to
     Northeast corner Section 5,
     T.3N., R.7W.; then
     Southerly to Northwest
     corner Section 9, T.3N.,
     R.7W.; thence Easterly to
     Northeast corner Section
     10, T.3N., R.7W.; thence
     Southerly to Southeast
     corner Section 22, T.2N.,
     R.7W.; thence Westerly to
     Southwest corner Section
     19, T.2N., R.7W.; thence
     Northerly to Northwest
     corner Section 19, T.2N.,
     R.7W.; thence Westerly to
     Southwest corner Section
     14, T.2N., R.8W.; thence
     Northerly to Southwest
     corner Section 35, T.3N.,
     R.8W.; thence Westerly to
     Southwest corner Section
     34, T.3N., R.8W.; thence
     Northerly to Northwest
     corner Section 27, T.3N.,
     R.8W.; thence Westerly to
     Southwest corner Section
     20, T.3N., R.8W.; thence
     Northerly to Northwest
     corner Section 17, T.3N.,
     R.8W.; thence Easterly to
     Northwest corner Section
     14, T.3N., R.8W.; thence
     Northerly to the point of
     beginning.
 
                                                  * * * * * * *
----------------------------------------------------------------------------------------------------------------

* * * * *
[FR Doc. 2021-13618 Filed 6-24-21; 8:45 am]
BILLING CODE 6560-50-P


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