ICIS-AIR PAACH0004200300032
USS/CLAIRTON WORKS, Clairton, PA: Clean Air Act compliance record, inspections, violations, penalties
- OperatingOperating status
- Major sourceEmissions classification
- Unaddressed-LocalCurrent violation status, as filed
- 17Compliance evaluations since January 1, 2017
- 15High-priority violations since January 1, 2017
- 40Formal enforcement actions since January 1, 2017
USS/CLAIRTON WORKS is on EPA’s ICIS-AIR register at 400 STATE ST, Clairton in Allegheny County, Pennsylvania: operating status operating, emissions classification major source, current violation status “Unaddressed-Local”. Allegheny County is on EPA’s Green Book list of areas that do not meet a national air quality standard.
What stands out
- The newest of the 221 events on file is a stack test dated July 30, 2026.
- Of the 40 formal enforcement actions on file, 37 carry a filed penalty above zero. The largest on file is $4,570,500, filed March 24, 2022.
- Of its 17 compliance evaluations on file, 5 are a full compliance evaluation.
- 16 of the 118 stack tests on file are recorded as failed.
- 15 of the 44 violation determinations on file are high-priority.
- The register holds 1,374 air-emissions sources in Allegheny County, Pennsylvania.
Every line is computed by formula from the record’s stored figures; nothing is estimated.
Identity
| Facility as filed | USS/CLAIRTON WORKS |
|---|---|
| ICIS-AIR ID | PAACH0004200300032 |
| EPA facility registry ID | 110042043384 |
| Operating status | Operating |
| Emissions classification | Major source |
| Current violation status (HPV field) | Unaddressed-Local |
| Address | 400 STATE ST, Clairton, PA 150251855 |
| County | Allegheny County |
| In a nonattainment county | Yes (EPA Green Book) |
| Industry (NAICS) | Primary metal manufacturing (NAICS 3311) |
| SIC code | 3312 |
| EPA region | 03 |
| Local air agency | Allegheny County Health Department |
Programs and pollutants
The program, pollutant and Title V files are not loaded: what this page covers.
Compliance evaluations
- 17Evaluations since January 1, 2017
- 5Full compliance evaluations
| Date | What EPA recorded | Agency | Programs |
|---|---|---|---|
| July 3, 2025 | FCE On-Site | Local | MACT Standards (40 CFR Part 63); National Emission Standards for Hazardous Air Pollutants (40 CFR Part 61); State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits |
| June 3, 2025 | PCE On-Site | Local | State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits |
| August 13, 2024 | PCE On-Site | U.S. EPA | MACT Standards (40 CFR Part 63); National Emission Standards for Hazardous Air Pollutants (40 CFR Part 61); New Source Performance Standards |
| February 22, 2024 | PCE Off-Site | Local | State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits |
| December 15, 2023 | PCE Off-Site | Local | State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits |
| December 5, 2023 | PCE Off-Site | Local | State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits |
| October 19, 2023 | PCE Off-Site | Local | State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits |
| June 15, 2023 | FCE On-Site | Local | MACT Standards (40 CFR Part 63); National Emission Standards for Hazardous Air Pollutants (40 CFR Part 61); New Source Performance Standards; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits |
| March 22, 2023 | PCE On-Site | U.S. EPA | MACT Standards (40 CFR Part 63); Title V Permits |
| March 15, 2022 | PCE Off-Site | Local | MACT Standards (40 CFR Part 63); State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits |
| January 5, 2022 | PCE Off-Site | Local | State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits |
| August 4, 2021 | PCE On-Site | Local | State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits |
| June 10, 2021 | FCE On-Site | State | MACT Standards (40 CFR Part 63); National Emission Standards for Hazardous Air Pollutants (40 CFR Part 61); State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits |
| June 4, 2021 | PCE Off-Site | Local | State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits |
| May 27, 2020 | PCE Off-Site | Local | State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits |
| June 11, 2019 | FCE On-Site | Local | State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards |
| July 20, 2017 | FCE On-Site | Local | State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards |
Violations
- 44Violation determinations since January 1, 2017
- 15Of them high-priority
What high-priority and federally reportable violations mean.
| Date | What EPA recorded | Agency | Programs |
|---|---|---|---|
| December 18, 2024 | HPV day-zero determination | Local | State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits |
| October 23, 2024 | Earliest FRV determination | Local | State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits |
| February 22, 2024 | HPV day-zero determination | Local | State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits |
| February 7, 2024 | HPV day-zero determination | Local | State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits |
| November 30, 2023 | HPV day-zero determination | Local | State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits |
| September 22, 2023 | Earliest FRV determination | Local | MACT Standards (40 CFR Part 63); National Emission Standards for Hazardous Air Pollutants (40 CFR Part 61); State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits |
| August 18, 2023 | Earliest FRV determination | Local | State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits |
| August 16, 2023 | HPV day-zero determination | Local | State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits |
| July 4, 2022 | Earliest FRV determination | Local | State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits |
| March 15, 2022 | HPV day-zero determination | Local | MACT Standards (40 CFR Part 63); State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits |
| March 3, 2022 | HPV day-zero determination | Local | Title V Permits |
| November 25, 2021 | Earliest FRV determination | Local | State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits |
| August 4, 2021 | Earliest FRV determination | Local | State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits |
| June 4, 2021 | Earliest FRV determination | Local | State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits |
| April 1, 2021 | Earliest FRV determination | Local | Title V Permits |
| August 25, 2020 | HPV day-zero determination | Local | State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits |
| May 19, 2020 | Earliest FRV determination | Local | MACT Standards (40 CFR Part 63); State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits |
| March 12, 2020 | HPV day-zero determination | Local | Title V Permits |
| February 4, 2020 | HPV day-zero determination | Local | State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits |
| January 14, 2020 | Earliest FRV determination | Local | MACT Standards (40 CFR Part 63); State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits |
| June 17, 2019 | Earliest FRV determination | Local | State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits |
| May 1, 2019 | Earliest FRV determination | Local | State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits |
| May 1, 2019 | Earliest FRV determination | Local | State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits |
| April 30, 2019 | Earliest FRV determination | Local | State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits |
| March 6, 2019 | HPV day-zero determination | Local | State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits |
| February 28, 2019 | HPV day-zero determination | Local | State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits |
| February 4, 2019 | HPV day-zero determination | Local | State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits |
| January 10, 2019 | Earliest FRV determination | Local | Title V Permits |
| September 30, 2018 | Earliest FRV determination | Local | MACT Standards (40 CFR Part 63); State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits |
| August 1, 2018 | Earliest FRV determination | Local | State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits |
| June 30, 2018 | Earliest FRV determination | Local | State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits |
| June 28, 2018 | Earliest FRV determination | Local | MACT Standards (40 CFR Part 63); State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits |
| May 7, 2018 | Earliest FRV determination | Local | MACT Standards (40 CFR Part 63); State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits |
| February 27, 2018 | HPV day-zero determination | Local | State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits |
| February 1, 2018 | Earliest FRV determination | Local | MACT Standards (40 CFR Part 63); State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits |
| January 8, 2018 | HPV day-zero determination | Local | State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits |
| November 8, 2017 | Earliest FRV determination | Local | State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits |
| October 31, 2017 | Earliest FRV determination | Local | Title V Permits |
| October 30, 2017 | Earliest FRV determination | Local | MACT Standards (40 CFR Part 63); State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits |
| August 1, 2017 | Earliest FRV determination | Local | MACT Standards (40 CFR Part 63); State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits |
| July 5, 2017 | Earliest FRV determination | Local | MACT Standards (40 CFR Part 63); State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits |
| June 12, 2017 | Earliest FRV determination | Local | MACT Standards (40 CFR Part 63); State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits |
| May 1, 2017 | Earliest FRV determination | Local | State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits |
| January 25, 2017 | Earliest FRV determination | Local | MACT Standards (40 CFR Part 63); State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits |
Enforcement and penalties
37 of the formal enforcement actions carry a penalty filed above zero. How a penalty is shown.
| Date | What EPA recorded | Agency | Penalty, as filed |
|---|---|---|---|
| May 3, 2024 | Administrative Order | Local | $7,700 |
| February 26, 2024 | Administrative Order | Local | $1,991,000 |
| January 29, 2024 | Administrative Order | Local | $0 |
| December 29, 2023 | Administrative Order | Local | $2,202,825 |
| October 19, 2023 | Administrative Order | Local | $2,860 |
| March 24, 2022 | Administrative Order | Local | $4,570,500 |
| March 7, 2022 | Administrative Order | Local | $1,842,530 |
| December 15, 2021 | Administrative Order | Local | $5,500 |
| August 27, 2021 | Administrative Order | Local | $5,500 |
| February 19, 2021 | Administrative Order | Local | $4,165 |
| January 25, 2021 | Administrative Order | Local | $8,800 |
| May 28, 2020 | Administrative Order | Local | $36,140 |
| February 21, 2020 | Administrative Order | Local | $13,200 |
| January 4, 2020 | Administrative Order | Local | $0 |
| December 20, 2019 | Administrative Order | Local | $10,560 |
| June 27, 2019 | Administrative Order | Local | $273,250 |
| June 17, 2019 | Administrative Order | Local | $0 |
| May 10, 2019 | Administrative Order | Local | $337,670 |
| May 10, 2019 | Administrative Order | Local | $5,750 |
| May 1, 2019 | Administrative Order | Local | $49,700 |
| April 30, 2019 | Administrative Order | Local | $40,000 |
| March 29, 2019 | Administrative Order | Local | $707,568 |
| March 25, 2019 | Administrative Order | Local | $1,980 |
| February 1, 2019 | Administrative Order | Local | $1,600 |
| February 1, 2019 | Administrative Order | Local | $44,700 |
| October 31, 2018 | Administrative Order | Local | $69,300 |
| October 31, 2018 | Administrative Order | Local | $613,716 |
| August 1, 2018 | Administrative Order | Local | $60,600 |
| June 28, 2018 | Administrative Order | Local | $1,091,950 |
| May 7, 2018 | Administrative Order | Local | $392,100 |
| May 1, 2018 | Administrative Order | Local | $45,400 |
| February 27, 2018 | Administrative Order | Local | $5,500 |
| February 1, 2018 | Administrative Order | Local | $90,000 |
| October 31, 2017 | Administrative Order | Local | $93,900 |
| October 30, 2017 | Administrative Order | Local | $199,300 |
| August 1, 2017 | Administrative Order | Local | $52,300 |
| July 5, 2017 | Administrative Order | Local | $122,775 |
| June 12, 2017 | Administrative Order | Local | $227,875 |
| May 1, 2017 | Administrative Order | Local | $34,000 |
| January 25, 2017 | Administrative Order | Local | $253,425 |
Informal enforcement
| Date | What EPA recorded | Agency |
|---|---|---|
| December 6, 2021 | Notice of Violation | Local |
| April 1, 2021 | Notice of Violation | Local |
Stack tests
- 118Stack tests since January 1, 2017
- 16Recorded as failed
The newest 50 of 118.
| Date | What EPA recorded | Agency |
|---|---|---|
| July 30, 2026 | Pass | Local |
| July 29, 2026 | Fail | Local |
| July 8, 2026 | Pass | Local |
| July 7, 2026 | Pass | Local |
| June 19, 2026 | Pass | Local |
| May 14, 2026 | Pass | Local |
| May 7, 2026 | Pass | Local |
| February 20, 2026 | Pass | Local |
| February 18, 2026 | Pass | Local |
| September 4, 2025 | Pass | Local |
| August 20, 2025 | Pass | Local |
| June 26, 2025 | Pass | Local |
| June 11, 2025 | Pass | Local |
| June 5, 2025 | Pass | Local |
| October 31, 2024 | Fail | Local |
| September 19, 2024 | Pass | Local |
| September 12, 2024 | Pass | Local |
| August 6, 2024 | Fail | Local |
| August 5, 2024 | Fail | Local |
| July 26, 2024 | Fail | Local |
| July 24, 2024 | Fail | Local |
| July 12, 2024 | Pass | Local |
| July 11, 2024 | Pass | Local |
| June 4, 2024 | Pass | Local |
| May 22, 2024 | Pass | Local |
| May 16, 2024 | Pass | Local |
| March 14, 2024 | Pass | Local |
| March 13, 2024 | Pass | Local |
| March 12, 2024 | Pass | Local |
| March 7, 2024 | Pass | Local |
| March 5, 2024 | Pass | Local |
| October 18, 2023 | Pass | Local |
| September 22, 2023 | Fail | Local |
| September 15, 2023 | Pass | Local |
| August 22, 2023 | Pass | Local |
| July 20, 2023 | Pass | Local |
| June 22, 2023 | Pass | Local |
| June 20, 2023 | Fail | Local |
| October 14, 2022 | Pass | Local |
| September 28, 2022 | Pass | Local |
| September 22, 2022 | Pass | Local |
| August 17, 2022 | Pass | Local |
| August 16, 2022 | Pass | Local |
| August 12, 2022 | Pass | Local |
| August 3, 2022 | Pass | Local |
| August 2, 2022 | Pass | Local |
| June 14, 2022 | Pass | Local |
| June 8, 2022 | Pass | Local |
| June 3, 2022 | Pass | Local |
| March 24, 2022 | Pass | Local |
Watch USS/CLAIRTON WORKS
Free from EPA: Detailed Facility Report, ECHO Notify (registry ID 110042043384).
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EPA ICIS-AIR download, loaded September 14, 2026.