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Federal Register / Vol. 86, No. 116 / Monday, June 21, 2021 / Proposed Rules several revisions to the Illinois State Implementation Plan SIP. First, EPA is proposing to approve amendments to the Illinois SIP that incorporate by reference EPAs current national ambient air quality standard NAAQS
for ozone, particulate matter, lead, nitrogen dioxide, and sulfur oxides.
Second, EPA is proposing to approve revisions to the Illinois SIP that incorporate by reference current Federal Reference Methods FRMs for monitoring carbon monoxide, ozone, particulate matter, lead, nitrogen dioxide, and sulfur oxides. Third, EPA
is proposing to approve an amendment to the Illinois SIP that reflects a recent update to EPAs List of Designated Reference and Equivalent Methods.
Lastly, EPA is also proposing to approve minor revisions and corrections to the Illinois SIP.
DATES: Comments must be received on or before July 21, 2021.
ADDRESSES: Submit your comments, identified by Docket ID Nos. EPAR05
OAR20200544 and EPAR05OAR
20210144 at http
www.regulations.gov, or via email to blakley.pamela@epa.gov. For comments submitted at Regulations.gov, follow the online instructions for submitting comments. Once submitted, comments cannot be edited or removed from Regulations.gov. For either manner of submission, 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, please contact the person identified in the FOR FURTHER
INFORMATION CONTACT section. 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.
FOR FURTHER INFORMATION CONTACT:
Anthony Maietta, Environmental Protection Specialist, Control Strategies Section, Air Programs Branch AR18J, Environmental Protection Agency, Region 5, 77 West Jackson Boulevard, Chicago, Illinois 60604, 312 3538777,
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maietta.anthony@epa.gov. The EPA
Region 5 office is open from 8:30 a.m.
to 4:30 p.m., Monday through Friday, excluding Federal holidays and facility closures due to COVID19.
SUPPLEMENTARY INFORMATION:
Throughout this document whenever we, us, or our is used, we mean EPA. This supplementary information section is arranged as follows:

2020, with remote access because of the coronavirus pandemic. A public comment was received requesting to add punctuation to an abbreviation contained in the amended rules, and the request was responded to and fulfilled by the IPCB. A final notice of adopted amendments was published in the Illinois Register on January 4, 2021 with an effective date of December 17, 2020.

I. Background II. EPAs Analysis of the SIP Amendments III. What action is EPA taking?
IV. Incorporation by Reference V. Statutory and Executive Order Reviews
II. EPAs Analysis of the SIP
Amendments Section 10H of the Illinois Environmental Protection Act at Chapter 415 of the Illinois Compiled Statutes directs IPCB to adopt ambient air quality standards that are identical in substance to the NAAQS
promulgated by EPA. Illinois requested the amendments to 35 IAC Part 243 be approved into the Illinois SIP to meet this state requirement. The amendments contained in the October 20, 2020 and February 16, 2021 submittals update the air quality standards, revise FRMs, and provide corrections and grammatical revisions that increase the clarity of the rules.

I. Background On October 20, 2020 and February 16, 2021, the Illinois Environmental Protection Agency IEPA requested that EPA approve amendments to the Illinois SIP. The following sections of Title 35
of the Illinois Administrative Code IAC, Part 243, Subpart A: General Provisions were amended: 243.101
Definitions, 243.102 Scope, 243.105 Air Quality Monitoring Data Influenced by Exceptional Events, 243.107 Reference Conditions, and 243.108 Incorporations by Reference. The SIP revisions also amend the following sections of 35 IAC
Part 243, Subpart B: Standards and Measurement Methods: 243.120 PM10
and PM2.5; 243.122 Sulfur Oxides Sulfur Dioxide; 243.123 Carbon Monoxide; 243.124 Nitrogen Oxides Nitrogen Dioxide as Indicator; and 243.126 Lead.
The Illinois Pollution Control Board IPCB adopted these SIP amendments in four different state actions. Three of those actions, R1914 July 1, 2018
through December 31, 2018, R203
January 1, 2019 through June 30, 2019, and R2011 July 1, 2019 through December 31, 2019, were consolidated into a single docket by IPCB called R19
14/R203/R2011 Consolidated and a proposal of the consolidated amendments was published in the Illinois Register on June 5, 2020. IPCB
held a public hearing on the consolidated rulemakings on July 16, 2020, with remote access because of the coronavirus pandemic. A public comment was received requesting clarification on a potential error in the proposed amendment, and in response the error was recognized and corrected by IPCB. A final notice of adopted amendments was published in the Illinois Register on September 4, 2020
with an effective date of August 18, 2020.
The proposed amendments contained in the fourth state action, R211, were published in the Illinois Register on October 2, 2020. IPCB held a public hearing on R211 on November 19,
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Amendments to 35 IAC 243.101
There were several amendments to 35
IAC 243.101 Definitions in the February 16, 2021 submittal. Under the definitions of Exceptional event, Federal equivalent method, and Federal reference method, the word which has been replaced with that.
In all three cases, the revisions are grammar corrections and do not change the meaning of the definitions but do help make these definitions clearer to the reader and therefore are approvable.
Reference years for Code of Federal Regulations CFR citations have been removed from the definition of Federal land manager, which is approvable because they do not affect the citations listed, instead they will reference the most current edition of the CFR. The definition of USEPA was revised to replace where with if when describing the use of USEPA in context of quoting EPA using the word Administrator. These revisions are approvable because they simply correct grammar or make the definitions clearer.
Amendments to 35 IAC 243.102
In the February 16, 2021 submittal, paragraph a of 35 IAC 243.102 Scope contained amended language to make clearer that both Sections 7.2 and 10H
of the Illinois Environmental Protection Act apply to 35 IAC Part 243. The amendment is approvable because the previous wording did not make clear that both Section 7.2 and Section 10H
are in Chapter 415 of the Illinois
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