Clean Water Act discharge permit · NPDES ARG790098
MALVERN SHELL #80, Malvern, AR: NPDES ARG790098 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 11Pollutants under a numeric limit
- 3Pollutants with an effluent exceedance
MALVERN SHELL #80, held by COULSON OIL COMPANY, holds NPDES permit ARG790098, which discharges to Ouachita River. EPA’s file records it issued March 31, 2011 and expiring March 31, 2016. The status and dates are as EPA’s permit file stood when Velarion loaded it (October 14, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.
Identity
| Facility as filed | MALVERN SHELL #80 |
|---|---|
| Permittee as filed | COULSON OIL COMPANY |
| NPDES ID | ARG790098 |
| Permit status | Administratively continued (past its expiration date and still in force until reissued) |
| Permit type | Coverage under a general permit |
| Discharger class | Minor discharger |
| Facility type | Not a publicly owned treatment works |
| Issued | March 31, 2011 |
| Expiration date | March 31, 2016 |
| Address | Malvern, AR 72104 |
| Receiving water | OUACHITA RIVER |
| Subwatershed | Stone Quarry Creek-Ouachita River (HUC 080401020101) |
| SIC | 5541 – Gasoline Service Stations |
Cited to the EPA ICIS-NPDES permit file (ECHO download) and EPA’s NAICS/SIC and component files, the same download.
Effluent limits and exceedances
- 15Pollutants on file
- 11Under a numeric limit
- 15With a violation of any kind
- 3With 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 |
|---|---|---|---|---|---|
| Benzene | 2 | 28 | 22 | December 31, 2013 | 980% over the limit |
| Benzene, toluene, xylene in combination | 2 | 17 | 11 | June 30, 2012 | 764% over the limit |
| Petrol hydrocarbons, total recoverable | 2 | 10 | 4 | April 30, 2011 | 80% over the limit |
| Low Flow Pass/Fail Static Renewal 48Hr Acute Daphnia pulex | 1 | 7 | 0 | ||
| LF Pass/Fail Static Renewal 48Hr Acute Pimephales promelas | 1 | 7 | 0 | ||
| NOAEC Lethal Statis Renewal 48 Hr Acute Daphnia pulex | 1 | 7 | 0 | ||
| NOAEC Lethal Static Renewal 48Hr acute Pimephales promelas | 1 | 7 | 0 | ||
| Coef Of Var Static Renewal 48Hr Acute D. pulex | 1 | 7 | 0 | ||
| Coef Of Var Static Renewal 48Hr Acute Pimephales promelas | 1 | 7 | 0 | ||
| pH | 2 | 6 | 0 | ||
| Flow, in conduit or thru treatment plant | 2 | 6 | 0 | ||
| Solids, total suspended | 0 | 4 | 0 | ||
| Polynuclear Aromatic Hydrocarbons [PAHs] | 0 | 4 | 0 | ||
| Benzo[a]pyrene | 0 | 4 | 0 | ||
| Whole effluent toxicity | 0 | 3 | 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 ARG790098.
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.
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, ARG790098.
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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 ARG790098 there.
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Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.