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###### Environmental Protection Agency

          - 40 CFR Part 52
          - [EPA-R05-OAR-2024-0105; EPA-R05-OAR-2024-0320; FRL-12240-01-R5]

# AGENCY:

Environmental Protection Agency (EPA).

# ACTION:

Proposed rule.

# SUMMARY:

The Environmental Protection Agency (EPA) is proposing to approve State Implementation Plan (SIP) revisions submitted by the Illinois Environmental Protection Agency (IEPA or Illinois). The revisions, submitted on February 26, 2024, and July 8, 2024, update the Illinois air pollution control rules entitled “Part 243—Ambient Air Quality Standards” in response to EPA rulemakings and changes to the National Ambient Air Quality Standards (NAAQS) that EPA adopted in 2022 and 2023.

# DATES:

Comments must be received on or before November 4, 2024.

# ADDRESSES:

                        Submit your comments, identified by Docket ID No. EPA-R05-OAR-2024-0105 or EPA-R05-OAR-2024-0320 at                         *https://www.regulations.gov,*                         or via email to                         *arra.sarah@epa.gov.*                         For comments submitted at                         *Regulations.gov,*                         follow the online instructions for submitting comments. Once submitted, comments cannot be edited or removed from the docket. EPA may publish any comment received to its public docket. Do not submit electronically any information you consider to be Confidential Business Information (CBI), Proprietary Business Information (PBI), 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, PBI, or multimedia submissions, and general guidance on making effective comments, please visit                         *https://www.epa.gov/​dockets/​commenting-epa-dockets.*

# FOR FURTHER INFORMATION CONTACT:

                        Mayesha Choudhury, Air and Radiation Division (AR-18J), Environmental Protection Agency, Region 5, 77 West Jackson Boulevard, Chicago, Illinois 60604, (312) 886-5909,                         *choudhury.mayesha@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.                    

# SUPPLEMENTARY INFORMATION:

                    In the Final Rules section of this                     **Federal Register**                    , EPA is approving the state's SIP submittals as a direct final rule                           ( print page 80446)                        without prior proposal because the Agency views these as noncontroversial submittals and anticipates no adverse comments. A detailed rationale for the approval is set forth in the direct final rule. If no relevant adverse comments are received in response to this rule, no further activity is contemplated. If EPA receives such comments, the direct final rule will be withdrawn and all public comments received will be addressed in a subsequent final rule based on this proposed rule. EPA will not institute a second comment period. Any parties interested in commenting on this action should do so at this time. Please note that if EPA receives adverse comment on an amendment, paragraph, or section of this rule and if that provision may be severed from the remainder of the rule, EPA may adopt as final those provisions of the rule that are not the subject of an adverse comment. For additional information, see the direct final rule which is located in the Rules section of this                     **Federal Register**                    .                

Dated: September 27, 2024.

Debra Shore,

Regional Administrator, Region 5.

[FR Doc. 2024-22734 Filed 10-2-24; 8:45 am]

BILLING CODE 6560-50-P