Clean Water Act discharge permit · NPDES LA0002917
SOUTHWESTERN ELECTRIC POWER COMPANY-LIEBERMAN POWER PLANT, Mooringsport, LA: NPDES LA0002917 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MajorDischarger class
- 23Pollutants under a numeric limit
- 4Pollutants with an effluent exceedance
SOUTHWESTERN ELECTRIC POWER COMPANY-LIEBERMAN POWER PLANT, held by Southwestern Electric Power Company- Lieberman Power Plant, holds NPDES permit LA0002917. EPA’s file records it issued March 11, 2015 and expiring March 31, 2020. 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 | SOUTHWESTERN ELECTRIC POWER COMPANY-LIEBERMAN POWER PLANT |
|---|---|
| Permittee as filed | Southwestern Electric Power Company- Lieberman Power Plant |
| NPDES ID | LA0002917 |
| 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 | March 11, 2015 |
| Expiration date | March 31, 2020 |
| Address | Mooringsport, LA 71060 |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Tete Bayou-Frontal Caddo Lake (HUC 111403060411) |
| SIC | 4911 – Electric Services |
| Other EPA IDs (FRS) | RCRA handler LAD000726398; ICIS-AIR source LA0000002201700007 |
Cited to the EPA ICIS-NPDES permit file (ECHO download) and EPA’s NAICS/SIC and component files, the same download; cross-program IDs from EPA’s FRS facility-registry crosswalk.
Effluent limits and exceedances
- 25Pollutants on file
- 23Under a numeric limit
- 9With 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 |
|---|---|---|---|---|---|
| pH | 2 | 3 | 3 | May 31, 2017 | |
| Chlorine, total residual | 2 | 3 | 2 | April 30, 2020 | 900% over the limit |
| BOD, 5-day, 20 deg. C | 0 | 2 | 2 | June 30, 2008 | 149% over the limit |
| Coliform, fecal general | 0 | 1 | 1 | June 30, 2006 | 300% over the limit |
| Pass/Fail Static Renewal 7Day Chronic Pimephales promelas | 2 | 2 | 0 | ||
| Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Pimephales promelas | 2 | 2 | 0 | ||
| NOEC Lethal Static Renewal 7 Day Chronic Pimephales promelas | 2 | 2 | 0 | ||
| NOEC Sub-Lethal Static Renewal 7 Day Chronic Pimephales promelas | 2 | 2 | 0 | ||
| Coef Of Var Static Renewal 7Day Chronic Pimephales promelas | 1 | 1 | 0 | ||
| Copper, total [as Cu] | 4 | 0 | 0 | ||
| Whole effluent toxicity - retest #1 | 4 | 0 | 0 | ||
| Whole effluent toxicity - retest #2 | 4 | 0 | 0 | ||
| WET, sublethal retest #1 | 4 | 0 | 0 | ||
| WET, sublethal retest #2 | 4 | 0 | 0 | ||
| Flow, in conduit or thru treatment plant | 4 | 0 | 0 | ||
| Whole Effluent Toxicity - Retest #3 | 4 | 0 | 0 | ||
| Whole Effluent Toxicity, Sub-Lethal Retest #3 | 4 | 0 | 0 | ||
| Temperature, water deg. fahrenheit | 2 | 0 | 0 | ||
| Solids, total suspended | 2 | 0 | 0 | ||
| Oil and grease | 2 | 0 | 0 | ||
| Pass/Fail Static Renewal 7 Day Chronic Ceriodaphnia dubia | 2 | 0 | 0 | ||
| Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Ceriodaphnia dubia | 2 | 0 | 0 | ||
| NOEC Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia | 2 | 0 | 0 | ||
| NOEC Sub-Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia | 2 | 0 | 0 | ||
| Coef Of Var Static Renewal 7Day Chronic Ceriodaphnia dubia | 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 |
|---|---|---|
| June 22, 2023 | Monitoring Violations - Improper Analysis or Lab Error | ST6 |
| June 22, 2023 | Monitoring Violations - Invalid/Unrepresentative Sample | 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.
Watch this permit
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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 LA0002917 there.
Nearby on the register
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Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.