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Clean Air Act stationary source · ICIS-AIR IN0000001803300043

STEEL DYNAMICS, INC. FLAT ROLL GROUP, BUTLER DIVISION, Butler, IN: Clean Air Act compliance record, inspections, violations, penalties

STEEL DYNAMICS, INC. FLAT ROLL GROUP, BUTLER DIVISION, at 4500 CR 59, Butler in DeKalb County, Indiana, is an operating major source of air pollution on EPA’s ICIS-AIR register. EPA’s file records its current violation status (ICIS-AIR’s high-priority violation field) as “Unaddressed-State”. The status and classification are as EPA’s facility file stood when Velarion loaded it (September 14, 2026); EPA’s free Detailed Facility Report on ECHO carries the source’s current standing, quarter by quarter.

Identity

Facility as filedSTEEL DYNAMICS, INC. FLAT ROLL GROUP, BUTLER DIVISION
ICIS-AIR IDIN0000001803300043
EPA facility registry ID110000592396
Operating statusOperating
Emissions classificationMajor source
Current violation status (ICIS-AIR high-priority violation field)Unaddressed-State
Address4500 CR 59, Butler, IN 46721-9747
CountyDeKalb County
In a nonattainment countyNo (EPA Green Book)
Industry (NAICS)Primary metal manufacturing (NAICS 3311)
SIC code3312
EPA region05

Cited to the EPA ICIS-AIR facility file (ECHO download).

Programs and pollutants

Velarion’s copy of EPA’s ICIS-AIR download does not include its program, pollutant and Title V certification files, so this page does not list the Clean Air Act programs STEEL DYNAMICS, INC. FLAT ROLL GROUP, BUTLER DIVISION is under or the pollutants it is permitted for. The programs each evaluation and violation below was recorded under are shown with it. EPA’s free Detailed Facility Report lists both.

Compliance evaluations

DateWhat EPA recordedAgencyPrograms
September 24, 2024FCE On-SiteStateTitle V Permits
October 13, 2021FCE On-SiteStateTitle V Permits
December 6, 2019FCE On-SiteStateTitle V Permits
November 7, 2018FCE On-SiteStateTitle V Permits
April 5, 2018FCE On-SiteStateTitle V Permits
April 18, 2017FCE On-SiteStateTitle V Permits

Violations

A high-priority violation (HPV) is the most serious class of Clean Air Act non-compliance an agency records; a federally reportable violation (FRV) is the next step down. Each row is one determination as EPA’s violation history files it.

DateWhat EPA recordedAgencyPrograms
October 30, 2025Earliest FRV determinationStateTitle V Permits
April 30, 2025Earliest FRV determinationStateTitle V Permits
February 27, 2025Earliest FRV determinationStateTitle V Permits
October 31, 2024Earliest FRV determinationStateTitle V Permits
April 28, 2024Earliest FRV determinationStateTitle V Permits
August 20, 2023HPV day-zero determinationStateTitle V Permits
May 22, 2023Earliest FRV determinationStateTitle V Permits
September 2, 2021HPV day-zero determinationStateTitle V Permits
June 26, 2020Earliest FRV determinationStateTitle V Permits
May 4, 2020Earliest FRV determinationStateTitle V Permits
March 5, 2020HPV day-zero determinationStateTitle V Permits
January 10, 2020Earliest FRV determinationStateTitle V Permits
May 3, 2019Earliest FRV determinationStateTitle V Permits
January 13, 2019HPV day-zero determinationStateNew Source Performance Standards
December 3, 2018Earliest FRV determinationStateNew Source Performance Standards
July 6, 2018Earliest FRV determinationStateTitle V Permits
January 30, 2018Earliest FRV determinationStateTitle V Permits
July 17, 2017HPV day-zero determinationStateTitle V Permits
May 24, 2017Earliest FRV determinationStateTitle V Permits

Enforcement and penalties

6 formal enforcement actions since January 1, 2017, 6 of them with a penalty filed above zero. Each penalty is shown as EPA’s formal action file states it; “Not stated” means the file gives no figure, and $0 is a disclosed zero.

DateWhat EPA recordedAgencyPenalty, as filed
June 5, 2026Administrative OrderState$21,000
February 14, 2023Administrative OrderState$16,563
August 8, 2022Administrative OrderState$7,000
November 30, 2021Administrative OrderState$5,000
June 11, 2021Civil Judicial ActionU.S. EPA$475,000
February 19, 2018Administrative OrderState$23,375

Informal enforcement

EPA’s informal action file holds no notice or warning for ICIS-AIR IN0000001803300043 since January 1, 2017.

Stack tests

The newest 50 of 113.

DateWhat EPA recordedAgency
May 12, 2026PassState
May 12, 2026PassState
May 12, 2026PassState
May 12, 2026PassState
May 12, 2026PassState
September 25, 2025PassState
September 25, 2025PassState
September 25, 2025PassState
September 25, 2025PassState
September 25, 2025PassState
September 19, 2025PassState
September 19, 2025PassState
September 19, 2025PassState
September 19, 2025PassState
September 19, 2025PassState
September 19, 2025PassState
September 19, 2025PassState
September 16, 2025PassState
September 16, 2025PassState
September 16, 2025PassState
September 16, 2025PassState
September 16, 2025PassState
September 16, 2025PassState
September 16, 2025PassState
September 16, 2025PassState
September 16, 2025PassState
November 19, 2024PassState
November 19, 2024PassState
November 19, 2024PassState
February 9, 2024PassState
February 9, 2024PassState
February 9, 2024PassState
February 9, 2024PassState
February 9, 2024PassState
February 9, 2024PassState
February 9, 2024PassState
February 9, 2024PassState
February 9, 2024PassState
July 11, 2023PassState
May 16, 2023PassState
April 26, 2023PassState
April 26, 2023PassState
April 26, 2023PassState
April 26, 2023PassState
April 26, 2023PassState
April 26, 2023PassState
April 17, 2023PassState
April 6, 2023PassState
April 6, 2023PassState
April 6, 2023PassState

Cited to the EPA ICIS-AIR evaluation, violation, stack test and enforcement files (ECHO download), events dated January 1, 2017 or later as loaded; up to 50 rows of each shown, newest first.

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Nearby on the register

Figures from EPA’s ICIS-AIR download, loaded September 14, 2026.

What this page shows

The page covers the Clean Air Act compliance record for STEEL DYNAMICS, INC. FLAT ROLL GROUP, BUTLER DIVISION in Butler, IN, a major source on EPA's ICIS-AIR register with an Operating status and a current violation status of "Unaddressed-State." The figures listed are 6 compliance evaluations, 5 high-priority violations and 6 formal enforcement actions since January 1, 2017.