Air Plan Approval; Illinois; Alton Township 2010 Sulfur Dioxide Redesignation and Maintenance Plan

Source: ENVIRONMENTAL PROTECTION AGENCY

Final rule.

CFR Part: "40 CFR Parts 52 and 81"

Citation: "89 FR 106357"

Document Number: "EPA-R05-OAR-2023-0498; FRL-12265-02-R5"

Page Number: "106357"

"Rules and Regulations"

Agency: "Environmental Protection Agency (EPA)."

SUMMARY: The Environmental Protection Agency (EPA) is approving Illinois' request to redesignate the Alton Township nonattainment area in Madison County, Illinois to attainment for the 2010 sulfur dioxide (SO2) National Ambient Air Quality Standard (NAAQS). EPA is also approving Illinois' maintenance plan for the area. Illinois submitted the request for approval on October 2, 2023. Additionally, EPA is taking final action to determine that the Alton Township area attained the 2010 SO2 NAAQS by the September 12, 2021, attainment date, fulfilling EPA's obligation under the Clean Air Act (CAA) section 179(c) to determine whether the area attained the relevant NAAQS standard. EPA proposed to approve this action on October 8, 2024, and received no comments.December 30, 2024

   DATES: This final rule is effective on January 29, 2025.

   ADDRESSES: EPA has established a docket for this action under Docket ID No. EPA-R05-OAR-2023-0498. 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, i.e., Confidential Business Information (CBI), Proprietary Business Information (PBI), 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 either through https://www.regulations.gov or at the Environmental Protection Agency, Region 5, Air and Radiation Division, 77 West Jackson Boulevard, Chicago, Illinois 60604. This facility is open from 8:30 a.m. to 4:30 p.m., Monday through Friday, excluding Federal holidays. We recommend that you telephone Cecilia Magos, at [phone], before visiting the Region 5 office.

   FOR FURTHER INFORMATION CONTACT: Cecilia Magos, Air and Radiation Division (AR-18J), Environmental Protection Agency, Region 5, 77 West Jackson Boulevard, Chicago, Illinois 60604, [phone], [email protected].

   SUPPLEMENTARY INFORMATION: Throughout this document whenever "we," "us," or "our" is used, we mean EPA.

I. Background Information

On June 22, 2010 (75 FR 35520), EPA revised the primary SO2 NAAQS, establishing a new health-based 1-hour standard of 75 parts per billion (ppb). EPA promulgated designations for...