Clean Water Act discharge permit · NPDES SC0028584
INEOS US CHEMICALS COMPANY, Wando, SC: NPDES SC0028584 discharge permit, effluent exceedances, inspections, penalties
- EffectivePermit status
- MajorDischarger class
- 16Pollutants under a numeric limit
- 6Pollutants with an effluent exceedance
INEOS US CHEMICALS COMPANY, held by INEOS US Chemicals Company, holds NPDES permit SC0028584. EPA’s file records it issued March 24, 2021 and expiring August 31, 2024. 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 | INEOS US CHEMICALS COMPANY |
|---|---|
| Permittee as filed | INEOS US Chemicals Company |
| NPDES ID | SC0028584 |
| Permit status | Effective |
| Permit type | Individual permit |
| Discharger class | Major discharger |
| Facility type | Not a publicly owned treatment works |
| Issued | March 24, 2021 |
| Expiration date | August 31, 2024 |
| Issuing agency | State |
| Address | Wando, SC 29492 |
| Subwatershed | Upper Cooper River (HUC 030502010705) |
| Other EPA IDs (FRS) | RCRA handler SCD084703909; ICIS-AIR source SC00004200029 |
Cited to the EPA ICIS-NPDES permit file (ECHO download); cross-program IDs from EPA’s FRS facility-registry crosswalk.
Effluent limits and exceedances
- 20Pollutants on file
- 16Under a numeric limit
- 12With a violation of any kind
- 6With 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 |
|---|---|---|---|---|---|
| Length of longest pH excursion | 1 | 4 | 4 | October 31, 2008 | 3,620% over the limit |
| Oxygen demand, ultimate | 4 | 5 | 3 | November 30, 2016 | 99,999% over the limit |
| BOD, 5-day, 20 deg. C | 4 | 5 | 2 | November 30, 2016 | 99,999% over the limit |
| % Effect Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia) | 2 | 4 | 2 | October 31, 2010 | 35% over the limit |
| Oxygen, dissolved [DO] | 2 | 1 | 1 | June 30, 2012 | 30% over the limit |
| % of time exceeding pH limits | 1 | 1 | 1 | January 31, 2008 | 400% over the limit |
| Nitrogen, ammonia total [as N] | 4 | 2 | 0 | ||
| Enterococci | 2 | 2 | 0 | ||
| Cobalt, total [as Co] | 0 | 2 | 0 | ||
| NOEL Static Renewal 7Day Chronic Americamysis bahia (formerly Mysidopsis bahia) | 0 | 2 | 0 | ||
| %Mortality 7Day Chronic Mysid. Bahia | 0 | 2 | 0 | ||
| %Repro Reduc Static Renewal 7D Americamysis bahia (formerly Mysidopsis bahia) | 0 | 2 | 0 | ||
| Solids, total suspended | 4 | 0 | 0 | ||
| Chloroform | 4 | 0 | 0 | ||
| pH | 2 | 0 | 0 | ||
| Flow, in conduit or thru treatment plant | 2 | 0 | 0 | ||
| Mercury, total [as Hg] | 2 | 0 | 0 | ||
| Flow, process wastewater | 2 | 0 | 0 | ||
| LC50 Static 48Hr Acute Americamysis bahia (formerly Mysidopsis bahia) | 1 | 0 | 0 | ||
| IC25 Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia) | 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
- 2Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| May 12, 2021 | Management Practice Violations - Improper Operation and Maintenance | ST6 |
| May 4, 2021 | Management Practice Violations - Improper Operation and Maintenance | 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 SC0028584 there.
Nearby on the register
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- Every permit record in Wando, A to Z
- Discharge permits in South Carolina
- Every permit record in South Carolina, A to Z
Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.