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Federal Register / Vol. 86, No. 232 / Tuesday, December 7, 2021 / Proposed Rules
Eastern Daylight Time in the United States, as appropriate.
Andrew Hirshfeld, Commissioner for Patents, Performing the Functions and Duties of the Under Secretary of Commerce for Intellectual Property and Director of the United States Patent and Trademark Office.
FR Doc. 202126502 Filed 12621; 8:45 am BILLING CODE 351016P

ENVIRONMENTAL PROTECTION
AGENCY
40 CFR Part 52
EPAR05OAR20200699; FRL931801
R5

Air Plan Approval; Indiana;
ArcelorMittal Burns Harbor Environmental Protection Agency EPA.
ACTION: Proposed rule.
AGENCY:

The Environmental Protection Agency EPA is proposing to approve revisions to the Indiana sulfur dioxide SO2 State Implementation Plan SIP
for the steel mill in Burns Harbor, Porter County, Indiana, formerly owned by ArcelorMittal Burns Harbor LLC and currently owned by Cleveland-Cliffs Burns Harbor LLC the Burns Harbor plant. Final approval of these revisions would satisfy a provision in a Federal Settlement Agreement. EPA approval would also strengthen the Indiana SO2
SIP by lowering SO2 emission limits and adding SO2 compliance test procedures for the Burns Harbor plant. EPA is proposing to approve this SIP revision request.
DATES: Comments must be received on or before January 6, 2022.
ADDRESSES: Submit your comments, identified by Docket ID No. EPAR05
OAR20200699 at https
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 lotter on DSK11XQN23PROD with PROPOSALS1

SUMMARY:

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 https www2.epa.gov/dockets/
commenting-epa-dockets.
FOR FURTHER INFORMATION CONTACT:
Mary Portanova, Environmental Engineer, Control Strategies Section, Air Programs Branch AR18J, Environmental Protection Agency, Region 5, 77 West Jackson Boulevard, Chicago, Illinois 60604, 312 3535954, Portanova.mary@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.
I. Background On December 10, 2009, the Indiana Department of Environmental Management IDEM submitted a sitespecific SO2 SIP revision request to EPA
for the Burns Harbor plant. The revised State rule removed the SO2 emission limit applicable to the blast furnace flare from SIP rule 326 Indiana Administrative Code IAC 7414. EPA
proposed to disapprove this requested revision on March 20, 2013 78 FR
17157 and finalized its disapproval on December 27, 2013 78 FR 78720. The basis for this action was that IDEM had not provided an adequate demonstration that removing the flare limit would enable continued protection of the SO2
National Ambient Air Quality Standard NAAQS or standard, as required by
section 110l of the Clean Air Act CAA.
On February 25, 2014, ArcelorMittal Burns Harbor LLC filed a petition for review challenging EPAs action in the United States Court of Appeals for the Seventh Circuit. ArcelorMittal Burns Harbor LLC v. EPA, No. 1412. The Court of Appeals subsequently granted the State of Indianas request to intervene as a Petitioner.
On May 28, 2019, the parties entered a Settlement Agreement under which the State is required to adopt revised emission limits and other associated requirements into 326 IAC 7414, as further discussed below. The parties entered into an Amended Settlement Agreement on March 23, 2021. On March 31, 2021, IDEM submitted revisions to 326 IAC 7414 to EPA as proposed SIP revisions.
II. What is contained in IDEMs SIP
revision request?
The revised rule 326 IAC 74141
increases the blast furnace gas flare limit from 0.07 pounds SO2 per million British thermal units lb/mmBtu to 0.50
lb/mmBtu. The revision adds a blast furnace gas testing protocol in 326 IAC
74141G, which includes a requirement to perform quarterly gas testing of blast furnace gas from blast furnaces C and D, and a requirement to use the test results to calculate the emission rate in lb/mmBtu associated with combusting the blast furnace gas.
Additional revisions in 326 IAC 74
141 remove the limits and listing for the slab mill soaking pits and the 160inch plate mill I & O furnace No. 8. The rule clarifies that those units have been permanently shut down 326 IAC 74
14 1F. The limits in pounds of SO2
per hour lb/hr for the 110-inch plate mill furnaces No. 1 and 2 and the 160inch plate mill I & O furnaces No. 4, 5, 6, and 7 have been reduced by 90
percent. The total lb/hr limit for the power station boilers No. 8, 9, 10, 11, and 12 has been reduced from 2,798 lb/
hr to 2,378 lb/hr. The rule revision also removes a separate set of alternative emission limits for the Burns Harbor plants SO2 emission units. The remaining emission limits in the rule are unchanged. Table 1 shows the emission limit changes.

TABLE 1EMISSION LIMIT CHANGES AND CLOSURES AT THE BURNS HARBOR PLANT
Unit name
Former fuel
Former limit
Revised fuel
Blast Furnace Gas Flare
Slab Mill Soaking Pits: 9 of 32 horizontally discharged.

Blast furnace gas
Coke oven gas

0.07 lb/mmBtu
482 lb/hr

Blast furnace gas
Closed

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Revised limit 0.50 lb/mmBtu.
0.0 lb/hr.