Clean Water Act discharge permit · NPDES NC0001112
STEPAN COMPANY - WILMINGTON FACILITY, Wilmington, NC: NPDES NC0001112 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MajorDischarger class
- 9Pollutants under a numeric limit
- 2Pollutants with an effluent exceedance
- 0Inspections on file
- 0Formal enforcement actions
STEPAN COMPANY - WILMINGTON FACILITY, held by Stepan Company, holds NPDES permit NC0001112. EPA’s file records it issued February 23, 2018 and expiring March 31, 2023.
STEPAN COMPANY - WILMINGTON FACILITY, Wilmington, North Carolina: Individual permit NC0001112, held by Stepan Company; Administratively continued (past its expiration date and still in force until reissued); issued February 23, 2018, term to March 31, 2023; Synthetic Dye and Pigment Manufacturing.
- Solids, total suspended: 4 limits, 36 violations of any kind, 2 effluent exceedances, latest May 31, 2005, largest 96% over the limit.
- BOD, 5-day, 20 deg. C: 2 limits, 17 violations of any kind, 2 effluent exceedances, latest May 31, 2025, largest 33% over the limit.
- pH: 4 limits, 34 violations of any kind, 0 effluent exceedances.
- Flow, in conduit or thru treatment plant: 2 limits, 27 violations of any kind, 0 effluent exceedances.
- Temperature, water deg. centigrade: 2 limits, 6 violations of any kind, 0 effluent exceedances.
- Nitrogen, total [as N]: 1 limit, 6 violations of any kind, 0 effluent exceedances.
- Phosphorus, total [as P]: 1 limit, 6 violations of any kind, 0 effluent exceedances.
- LC50 Static 24Hr Acute Pimephales promelas: 0 limits, 6 violations of any kind, 0 effluent exceedances.
- Copper, total [as Cu]: 2 limits, 3 violations of any kind, 0 effluent exceedances.
- Chlorine, total residual: 1 limit, 3 violations of any kind, 0 effluent exceedances.
- Fluoride, total [as F]: 0 limits, 3 violations of any kind, 0 effluent exceedances.
- Arsenic, total [as As]: 0 limits, 3 violations of any kind, 0 effluent exceedances.
- Zinc, total [as Zn]: 0 limits, 3 violations of any kind, 0 effluent exceedances.
- Carbon tetrachloride: 0 limits, 3 violations of any kind, 0 effluent exceedances.
- 1,2-Dichloroethane: 0 limits, 3 violations of any kind, 0 effluent exceedances.
- Chloroform: 0 limits, 3 violations of any kind, 0 effluent exceedances.
- Toluene: 0 limits, 3 violations of any kind, 0 effluent exceedances.
- Benzene: 0 limits, 3 violations of any kind, 0 effluent exceedances.
- Acenaphthylene: 0 limits, 3 violations of any kind, 0 effluent exceedances.
- Acenaphthene: 0 limits, 3 violations of any kind, 0 effluent exceedances.
- Acrylonitrile: 0 limits, 3 violations of any kind, 0 effluent exceedances.
- Anthracene: 0 limits, 3 violations of any kind, 0 effluent exceedances.
- Benzo[b]fluoranthene: 0 limits, 3 violations of any kind, 0 effluent exceedances.
- Benzo[k]fluoranthene: 0 limits, 3 violations of any kind, 0 effluent exceedances.
- Benzo[a]pyrene: 0 limits, 3 violations of any kind, 0 effluent exceedances.
- Chlorobenzene: 0 limits, 3 violations of any kind, 0 effluent exceedances.
- Chrysene: 0 limits, 3 violations of any kind, 0 effluent exceedances.
- Diethyl phthalate: 0 limits, 3 violations of any kind, 0 effluent exceedances.
- Dimethyl phthalate: 0 limits, 3 violations of any kind, 0 effluent exceedances.
- Ethylbenzene: 0 limits, 3 violations of any kind, 0 effluent exceedances.
- Fluoranthene: 0 limits, 3 violations of any kind, 0 effluent exceedances.
- Fluorene: 0 limits, 3 violations of any kind, 0 effluent exceedances.
- Hexachloroethane: 0 limits, 3 violations of any kind, 0 effluent exceedances.
- Methyl chloride [Chloromethane]: 0 limits, 3 violations of any kind, 0 effluent exceedances.
- Methylene chloride: 0 limits, 3 violations of any kind, 0 effluent exceedances.
- Nitrobenzene: 0 limits, 3 violations of any kind, 0 effluent exceedances.
- Phenanthrene: 0 limits, 3 violations of any kind, 0 effluent exceedances.
- Pyrene: 0 limits, 3 violations of any kind, 0 effluent exceedances.
- Tetrachloroethylene: 0 limits, 3 violations of any kind, 0 effluent exceedances.
- 1,1-Dichloroethane: 0 limits, 3 violations of any kind, 0 effluent exceedances.
- 1,1-Dichloroethylene: 0 limits, 3 violations of any kind, 0 effluent exceedances.
- 1,1,1-Trichloroethane: 0 limits, 3 violations of any kind, 0 effluent exceedances.
- 1,1,2-Trichloroethane: 0 limits, 3 violations of any kind, 0 effluent exceedances.
- Benzo[a]anthracene: 0 limits, 3 violations of any kind, 0 effluent exceedances.
- 1,2-Dichlorobenzene: 0 limits, 3 violations of any kind, 0 effluent exceedances.
- 1,2-Dichloropropane: 0 limits, 3 violations of any kind, 0 effluent exceedances.
- trans-1,2-Dichloroethylene: 0 limits, 3 violations of any kind, 0 effluent exceedances.
- 1,2,4-Trichlorobenzene: 0 limits, 3 violations of any kind, 0 effluent exceedances.
- 1,3-Dichlorobenzene: 0 limits, 3 violations of any kind, 0 effluent exceedances.
- 1,4-Dichlorobenzene: 0 limits, 3 violations of any kind, 0 effluent exceedances.
- 2-Chlorophenol: 0 limits, 3 violations of any kind, 0 effluent exceedances.
- 2-Nitrophenol: 0 limits, 3 violations of any kind, 0 effluent exceedances.
- 2,4-Dichlorophenol: 0 limits, 3 violations of any kind, 0 effluent exceedances.
- 2,4-Dimethylphenol: 0 limits, 3 violations of any kind, 0 effluent exceedances.
- 2,4-Dinitrotoluene: 0 limits, 3 violations of any kind, 0 effluent exceedances.
- 2,4-Dinitrophenol: 0 limits, 3 violations of any kind, 0 effluent exceedances.
- 2,6-Dinitrotoluene: 0 limits, 3 violations of any kind, 0 effluent exceedances.
- 4-Nitrophenol: 0 limits, 3 violations of any kind, 0 effluent exceedances.
- 4,6-Dinitro-o-cresol: 0 limits, 3 violations of any kind, 0 effluent exceedances.
- Phenol: 0 limits, 3 violations of any kind, 0 effluent exceedances.
STEPAN COMPANY - WILMINGTON FACILITY among its neighbors
EPA’s permit file holds 44 discharge permits in the Barnards Creek-Cape Fear River subwatershed (HUC 030300050504), NC0001112 among them.
Other permits in the Barnards Creek-Cape Fear River subwatershed (HUC 030300050504)
- 4050 CHAPRA DRIVE SAMSARA ESTATES, Wilmington: NCC221179, minor permit, permit term to March 31, 2029
- AMERICAN DISTILLATION - NAVASSA, Leland: NCG500148, minor permit, permit term to November 30, 2025
- AMERICAN DISTILLATION - NAVASSA, Leland: NCS000244, minor permit, permit term to December 31, 2018
- BARCLAY WEST (NORTH) PHASE I INFRASTRUCTURE & MOSBY BARCLAY WEST, Wilmington: NCC240216, minor permit, permit term to March 31, 2029
- BARNARD CREEK 230KV STORAGE YARD, Silver Lake: NCC252064, minor permit, permit term to March 31, 2029
- BRUNSWICK FOREST PHASE 3 (SEC 4B), Leland: NCC231694, minor permit, permit term to March 31, 2029
- BRUNSWICK FOREST PH. 1 SEC. 7, Winnabow: NCC261438, minor permit, permit term to March 31, 2029
- CAPE FEAR ACADEMY SCHOOL EXPANSION PHASE I, Wilmington: NCC261743, minor permit, permit term to March 31, 2029
- CAPE FEAR BOAT WORKS - NAVASA, Leland: NCG190085, minor permit, permit term to June 30, 2025
- CHRIST COMMUNITY CHURCH OF WILMINGTON, NC, Wilmington: NCC243430, minor permit, permit term to March 31, 2029
Identity
| Facility as filed | STEPAN COMPANY - WILMINGTON FACILITY |
|---|---|
| Permittee as filed | Stepan Company |
| NPDES ID | NC0001112 |
| Permit status | Administratively continued (past its expiration date and still in force until reissued) |
| Permit type | Individual permit |
| Discharger class | Major discharger |
| Facility type | Not a publicly owned treatment works |
| Issued | February 23, 2018 |
| Expiration date | March 31, 2023 |
| Address | Wilmington, NC 28401 |
| Subwatershed | Barnards Creek-Cape Fear River (HUC 030300050504) |
| NAICS | 325130 – Synthetic Dye and Pigment Manufacturing |
| SIC | 2865 – Cyclic Crudes And Intermediates |
| Other EPA IDs (FRS) | RCRA handler NCD990734055; ICIS-AIR source NC0000003706500083 |
Effluent limits and exceedances
- 69Pollutants on file
- 9Under a numeric limit
- 69With a violation of any kind
- 2With 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; the 60 with the most exceedances of 69 are shown.
| Pollutant or measure | Limits | Violations, any kind | Effluent exceedances | Latest exceedance | Largest exceedance, as filed |
|---|---|---|---|---|---|
| Solids, total suspended | 4 | 36 | 2 | May 31, 2005 | 96% over the limit |
| BOD, 5-day, 20 deg. C | 2 | 17 | 2 | May 31, 2025 | 33% over the limit |
| pH | 4 | 34 | 0 | ||
| Flow, in conduit or thru treatment plant | 2 | 27 | 0 | ||
| Temperature, water deg. centigrade | 2 | 6 | 0 | ||
| Nitrogen, total [as N] | 1 | 6 | 0 | ||
| Phosphorus, total [as P] | 1 | 6 | 0 | ||
| LC50 Static 24Hr Acute Pimephales promelas | 0 | 6 | 0 | ||
| Copper, total [as Cu] | 2 | 3 | 0 | ||
| Chlorine, total residual | 1 | 3 | 0 | ||
| Fluoride, total [as F] | 0 | 3 | 0 | ||
| Arsenic, total [as As] | 0 | 3 | 0 | ||
| Zinc, total [as Zn] | 0 | 3 | 0 | ||
| Carbon tetrachloride | 0 | 3 | 0 | ||
| 1,2-Dichloroethane | 0 | 3 | 0 | ||
| Chloroform | 0 | 3 | 0 | ||
| Toluene | 0 | 3 | 0 | ||
| Benzene | 0 | 3 | 0 | ||
| Acenaphthylene | 0 | 3 | 0 | ||
| Acenaphthene | 0 | 3 | 0 | ||
| Acrylonitrile | 0 | 3 | 0 | ||
| Anthracene | 0 | 3 | 0 | ||
| Benzo[b]fluoranthene | 0 | 3 | 0 | ||
| Benzo[k]fluoranthene | 0 | 3 | 0 | ||
| Benzo[a]pyrene | 0 | 3 | 0 | ||
| Chlorobenzene | 0 | 3 | 0 | ||
| Chrysene | 0 | 3 | 0 | ||
| Diethyl phthalate | 0 | 3 | 0 | ||
| Dimethyl phthalate | 0 | 3 | 0 | ||
| Ethylbenzene | 0 | 3 | 0 | ||
| Fluoranthene | 0 | 3 | 0 | ||
| Fluorene | 0 | 3 | 0 | ||
| Hexachloroethane | 0 | 3 | 0 | ||
| Methyl chloride [Chloromethane] | 0 | 3 | 0 | ||
| Methylene chloride | 0 | 3 | 0 | ||
| Nitrobenzene | 0 | 3 | 0 | ||
| Phenanthrene | 0 | 3 | 0 | ||
| Pyrene | 0 | 3 | 0 | ||
| Tetrachloroethylene | 0 | 3 | 0 | ||
| 1,1-Dichloroethane | 0 | 3 | 0 | ||
| 1,1-Dichloroethylene | 0 | 3 | 0 | ||
| 1,1,1-Trichloroethane | 0 | 3 | 0 | ||
| 1,1,2-Trichloroethane | 0 | 3 | 0 | ||
| Benzo[a]anthracene | 0 | 3 | 0 | ||
| 1,2-Dichlorobenzene | 0 | 3 | 0 | ||
| 1,2-Dichloropropane | 0 | 3 | 0 | ||
| trans-1,2-Dichloroethylene | 0 | 3 | 0 | ||
| 1,2,4-Trichlorobenzene | 0 | 3 | 0 | ||
| 1,3-Dichlorobenzene | 0 | 3 | 0 | ||
| 1,4-Dichlorobenzene | 0 | 3 | 0 | ||
| 2-Chlorophenol | 0 | 3 | 0 | ||
| 2-Nitrophenol | 0 | 3 | 0 | ||
| 2,4-Dichlorophenol | 0 | 3 | 0 | ||
| 2,4-Dimethylphenol | 0 | 3 | 0 | ||
| 2,4-Dinitrotoluene | 0 | 3 | 0 | ||
| 2,4-Dinitrophenol | 0 | 3 | 0 | ||
| 2,6-Dinitrotoluene | 0 | 3 | 0 | ||
| 4-Nitrophenol | 0 | 3 | 0 | ||
| 4,6-Dinitro-o-cresol | 0 | 3 | 0 | ||
| Phenol | 0 | 3 | 0 |
Inspections, violations and enforcement
- 0Single-event violations
EPA’s single-event violation file, as loaded, holds no violation for NPDES NC0001112.
Inspections
EPA’s inspection file holds no inspection for NPDES NC0001112.
Formal enforcement and penalties
0 formal actions, 0 of them with a penalty assessed. Federal and state penalties are separate figures from separate authorities and are shown as each was filed, never added together.
Informal enforcement
EPA’s informal enforcement file holds no action for NPDES NC0001112.
Watch this permit
One permit holder, $99/month. Watch the register for one permit holder and the places and receiving waters tied to its permits. Choose “One permit holder” and enter this permit’s NPDES ID, NC0001112.
Start the watch
- One permit holder — $99/month
- One watershed — $2,990/year
- One state — $4,990/year
- The whole register — $18,000/year
How we handle your data → Privacy
Nearby on the register
- Discharge permits in Wilmington
- Every permit record in Wilmington, A to Z
- Discharge permits in North Carolina
- Every permit record in North Carolina, A to Z
Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.