Clean Water Act discharge permit · NPDES IL0035688
KOPPERS INC, Galesburg, IL: NPDES IL0035688 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 22Pollutants under a numeric limit
- 4Pollutants with an effluent exceedance
KOPPERS INC holds NPDES permit IL0035688, which discharges to Ne/Se Ditch Trib To Un Trib To Lk Bracken. EPA’s file records it issued December 17, 2019 and expiring December 31, 2024. The status and dates are as EPA’s permit file stood when Velarion loaded it (September 14, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.
Identity
| Facility as filed | KOPPERS INC |
|---|---|
| Permittee as filed | KOPPERS INC |
| NPDES ID | IL0035688 |
| Permit status | Administratively continued (past its expiration date and still in force until reissued) |
| Permit type | Individual permit |
| Discharger class | Minor discharger |
| Facility type | Not a publicly owned treatment works |
| Issued | December 17, 2019 |
| Expiration date | December 31, 2024 |
| Address | Galesburg, IL 61401 |
| Receiving water | NE/SE DITCH TRIB TO UN TRIB TO LK BRACKEN |
| Subwatershed | Hermon Creek (HUC 071300050802) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 27Pollutants on file
- 22Under a numeric limit
- 14With a violation of any kind
- 4With 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 |
|---|---|---|---|---|---|
| Phenol | 0 | 26 | 21 | February 28, 2009 | 490% over the limit |
| Zinc, total [as Zn] | 2 | 14 | 8 | September 30, 2018 | 69% over the limit |
| Oil and grease | 0 | 19 | 7 | February 28, 2009 | 372% over the limit |
| pH | 2 | 13 | 1 | May 31, 1999 | |
| Flow, in conduit or thru treatment plant | 2 | 14 | 0 | ||
| BOD, 5-day, 20 deg. C | 0 | 12 | 0 | ||
| Solids, total suspended | 1 | 10 | 0 | ||
| Oil & Grease | 3 | 3 | 0 | ||
| Chromium, hexavalent [as Cr] | 1 | 1 | 0 | ||
| Naphthalene | 1 | 1 | 0 | ||
| Pentachlorophenol | 1 | 1 | 0 | ||
| Priority Pollutants | 1 | 1 | 0 | ||
| Cyanide, weak acid, dissociable | 0 | 1 | 0 | ||
| Cyanide, total [as CN] | 0 | 1 | 0 | ||
| Phenolics, total recoverable | 2 | 0 | 0 | ||
| Fluoride, total [as F] | 1 | 0 | 0 | ||
| Arsenic, total [as As] | 1 | 0 | 0 | ||
| Barium, total [as Ba] | 1 | 0 | 0 | ||
| Cadmium, total [as Cd] | 1 | 0 | 0 | ||
| Chromium, total [as Cr] | 1 | 0 | 0 | ||
| Copper, total [as Cu] | 1 | 0 | 0 | ||
| Iron, total [as Fe] | 1 | 0 | 0 | ||
| Iron, dissolved [as Fe] | 1 | 0 | 0 | ||
| Lead, total [as Pb] | 1 | 0 | 0 | ||
| Manganese, total [as Mn] | 1 | 0 | 0 | ||
| Nickel, total [as Ni] | 1 | 0 | 0 | ||
| Chemical Oxygen Demand [COD] | 1 | 0 | 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
- 0Single-event violations
EPA’s single-event violation file, as loaded, holds no violation for NPDES IL0035688.
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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Figures from EPA’s ICIS-NPDES download, loaded September 14, 2026.