Clean Air Act stationary source · ICIS-AIR IL000031300AAJ
KOPPERS CARBON MATERIALS LLC, Cicero, IL: Clean Air Act compliance record, inspections, violations, penalties
- OperatingOperating status
- Major sourceEmissions classification
- Addressed-StateCurrent violation status, as filed
- 19Compliance evaluations since January 1, 2017
- 1High-priority violations since January 1, 2017
- 0Formal enforcement actions since January 1, 2017
KOPPERS CARBON MATERIALS LLC, at 3900 S LARAMIE AVE, Cicero in Cook County, Illinois, 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 “Addressed-State”. Cook County is on EPA’s Green Book list of areas that do not meet a national air quality standard. 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 filed | KOPPERS CARBON MATERIALS LLC |
|---|---|
| ICIS-AIR ID | IL000031300AAJ |
| EPA facility registry ID | 110011828068 |
| Operating status | Operating |
| Emissions classification | Major source |
| Current violation status (ICIS-AIR high-priority violation field) | Addressed-State |
| Address | 3900 S LARAMIE AVE, Cicero, IL 60804-4523 |
| County | Cook County |
| In a nonattainment county | Yes (EPA Green Book) |
| Industry (NAICS) | Chemical manufacturing (NAICS 3251) |
| SIC code | 2865 |
| EPA region | 05 |
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 KOPPERS CARBON MATERIALS LLC 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
- 19Evaluations since January 1, 2017
- 3Full compliance evaluations
| Date | What EPA recorded | Agency | Programs |
|---|---|---|---|
| October 14, 2025 | PCE Off-Site | State | State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards |
| August 20, 2025 | PCE On-Site | State | State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards |
| August 14, 2024 | PCE On-Site | State | State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards |
| May 17, 2024 | PCE Off-Site | State | State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards |
| April 6, 2023 | FCE On-Site | State | State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards |
| November 23, 2021 | PCE On-Site | State | State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards |
| November 19, 2021 | PCE On-Site | U.S. EPA | National Emission Standards for Hazardous Air Pollutants (40 CFR Part 61) |
| June 22, 2021 | PCE On-Site | State | State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards |
| August 28, 2020 | FCE On-Site | State | State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards |
| August 27, 2020 | PCE On-Site | State | State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards |
| July 27, 2020 | PCE Off-Site | State | State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards |
| October 18, 2019 | PCE On-Site | U.S. EPA | Hazardous Air Pollutants |
| August 2, 2019 | PCE On-Site | State | State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards |
| August 1, 2019 | PCE On-Site | State | State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards |
| March 8, 2019 | PCE On-Site | U.S. EPA | Information Requests, Monitoring, & Recordkeeping |
| September 13, 2018 | PCE On-Site | State | State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards |
| September 12, 2018 | PCE On-Site | State | State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards |
| September 21, 2017 | FCE On-Site | State | State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards |
| September 19, 2017 | PCE On-Site | State | State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards |
Violations
- 6Violation determinations since January 1, 2017
- 1Of them high-priority
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.
| Date | What EPA recorded | Agency | Programs |
|---|---|---|---|
| January 7, 2026 | Earliest FRV determination | State | State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits |
| November 7, 2024 | Earliest FRV determination | State | State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits |
| July 25, 2023 | Earliest FRV determination | State | State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits |
| October 5, 2021 | Earliest FRV determination | State | State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits |
| April 26, 2021 | Earliest FRV determination | State | State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits |
| May 31, 2020 | HPV day-zero determination | State | State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits |
Enforcement and penalties
0 formal enforcement actions since January 1, 2017, 0 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.
Informal enforcement
| Date | What EPA recorded | Agency |
|---|---|---|
| October 4, 2023 | Notice of Violation | State |
| November 9, 2021 | Notice of Violation | State |
| July 15, 2021 | Notice of Violation | State |
| August 27, 2020 | Notice of Violation | State |
Stack tests
- 4Stack tests since January 1, 2017
- 0Recorded as failed
| Date | What EPA recorded | Agency |
|---|---|---|
| September 12, 2023 | Pass | State |
| February 8, 2023 | Pass | State |
| September 30, 2020 | Pass | State |
| May 9, 2019 | Pass | State |
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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EPA publishes a free Detailed Facility Report for every source on ECHO: its compliance status quarter by quarter, its evaluations, and its violations, enforcement actions and penalties. EPA also sends free notices of new inspections and enforcement actions through ECHO Notify; enter EPA facility registry ID 110011828068 there.
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Figures from EPA’s ICIS-AIR download, loaded September 14, 2026.