Clean Water Act discharge permit · NPDES MI0043524
CLEVELAND-CLIFFS STEEL CORPORATION-DEARBORN WORKS, Dearborn, MI: NPDES MI0043524 discharge permit, effluent exceedances, inspections, penalties
- EffectivePermit status
- MajorDischarger class
- 21Pollutants under a numeric limit
- 5Pollutants with an effluent exceedance
CLEVELAND-CLIFFS STEEL CORPORATION-DEARBORN WORKS, held by AK Steel Corporation, holds NPDES permit MI0043524. EPA’s file records it issued January 9, 2015 and expiring October 1, 2016. The status and dates are as EPA’s permit file stood when Velarion loaded it (September 15, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.
Identity
| Facility as filed | CLEVELAND-CLIFFS STEEL CORPORATION-DEARBORN WORKS |
|---|---|
| Permittee as filed | AK Steel Corporation |
| NPDES ID | MI0043524 |
| Permit status | Effective |
| Permit type | Individual permit |
| Discharger class | Major discharger |
| Facility type | Not a publicly owned treatment works |
| Issued | January 9, 2015 |
| Expiration date | October 1, 2016 |
| Issuing agency | State |
| Address | Dearborn, MI 48120 |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Woodmere Cemetery-River Rouge (HUC 040900040407) |
| Other EPA IDs (FRS) | RCRA handler MID087738431; ICIS-AIR source MI00000000000A8640 |
Cited to the EPA ICIS-NPDES permit file (ECHO download); cross-program IDs from EPA’s FRS facility-registry crosswalk.
Effluent limits and exceedances
- 26Pollutants on file
- 21Under a numeric limit
- 26With a violation of any kind
- 5With an effluent exceedance
An effluent exceedance is a discharge monitoring report value over the permit’s numeric limit (EPA’s violation code E90). A violation of any kind also counts a report not filed. Each row is EPA’s own count for that pollutant.
| Pollutant or measure | Limits | Violations, any kind | Effluent exceedances | Latest exceedance | Largest exceedance, as filed |
|---|---|---|---|---|---|
| Zinc, total [as Zn] | 20 | 444 | 23 | November 30, 2021 | 230% over the limit |
| Solids, total suspended | 32 | 456 | 14 | January 31, 2020 | 84% over the limit |
| Oil & Grease | 15 | 212 | 10 | April 30, 2015 | 124% over the limit |
| pH | 16 | 249 | 9 | August 31, 2025 | |
| Mercury, total [as Hg] | 30 | 215 | 1 | February 28, 2013 | 59% over the limit |
| Flow, in conduit or thru treatment plant | 34 | 386 | 0 | ||
| Lead, total [as Pb] | 12 | 293 | 0 | ||
| Production divided by days operated mo. | 0 | 180 | 0 | ||
| Temperature, water deg. fahrenheit | 18 | 150 | 0 | ||
| Silver, total [as Ag] | 20 | 112 | 0 | ||
| Chlorine, total residual | 10 | 110 | 0 | ||
| Outfall observation,visual, y/n response | 8 | 103 | 0 | ||
| Cyanide [A] | 20 | 72 | 0 | ||
| Copper, total [as Cu] | 8 | 62 | 0 | ||
| Cadmium, total [as Cd] | 2 | 46 | 0 | ||
| Naphthalene | 8 | 37 | 0 | ||
| Oxygen, dissolved [DO] | 4 | 37 | 0 | ||
| Nitrogen, ammonia total [as N] | 5 | 29 | 0 | ||
| Thallium, total [as Tl] | 8 | 24 | 0 | ||
| Selenium, total [as Se] | 8 | 24 | 0 | ||
| Cyanide, total [as CN] | 2 | 14 | 0 | ||
| Phenolics, total | 2 | 14 | 0 | ||
| Cyanide, free [amenable to chlorination] | 0 | 3 | 0 | ||
| Chlorination duration | 0 | 3 | 0 | ||
| Phenols | 0 | 2 | 0 | ||
| Tetrachloroethene | 0 | 2 | 0 |
Cited to the EPA ICIS-NPDES limits and effluent violations files (ECHO download); up to 60 rows shown, most exceedances first.
Inspections, violations and enforcement
- 5Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| March 8, 2024 | Permit Violations - Discharge Without a Valid Permit | ST6 |
| August 13, 2023 | Permit Violations - Discharge Without a Valid Permit | ST6 |
| February 9, 2023 | Permit Violations - Discharge Without a Valid Permit | ST6 |
| August 5, 2022 | Management Practice Violations - Best Management Practice Deficiencies | ST6 |
| August 30, 2018 | Management Practice Violations - Failure to Maintain Records | ST6 |
Velarion’s copy of EPA’s ICIS-NPDES files does not include the inspections, formal enforcement actions and informal enforcement actions files, so this page shows none of them. EPA’s free Detailed Facility Report on ECHO lists this permit’s inspections, enforcement actions and penalties.
Cited to the EPA ICIS-NPDES violation, inspection and enforcement files (ECHO download); up to 50 rows of each shown, newest first.
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EPA publishes a free Detailed Facility Report for every permit on ECHO: its compliance status quarter by quarter, its inspections, and its enforcement actions and penalties. EPA also sends free notices of new inspections and enforcement actions through ECHO Notify; enter NPDES ID MI0043524 there.
Nearby on the register
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- Every permit record in Michigan, A to Z
Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.