Clean Water Act discharge permit · NPDES LAG542477
SHAMROCK PLAZA COMPANY, LLC, Denham Springs, LA: NPDES LAG542477 discharge permit, effluent exceedances, inspections, penalties
- EffectivePermit status
- MinorDischarger class
- 10Pollutants under a numeric limit
- 3Pollutants with an effluent exceedance
SHAMROCK PLAZA COMPANY, LLC holds NPDES permit LAG542477. EPA’s file records it issued December 10, 2024 and expiring August 24, 2028. 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 | SHAMROCK PLAZA COMPANY, LLC |
|---|---|
| Permittee as filed | SHAMROCK PLAZA COMPANY, LLC |
| NPDES ID | LAG542477 |
| Permit status | Effective |
| Permit type | Coverage under a general permit |
| Discharger class | Minor discharger |
| Facility type | Not a publicly owned treatment works |
| Issued | December 10, 2024 |
| Expiration date | August 24, 2028 |
| Address | Denham Springs, LA 70726 |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Grays Creek-Amite River (HUC 080702020903) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 10Pollutants on file
- 10Under a numeric limit
- 10With 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 |
|---|---|---|---|---|---|
| Nitrogen, ammonia total [as N] | 2 | 11 | 7 | June 30, 2026 | 500% over the limit |
| BOD, carbonaceous [5 day, 20 C] | 2 | 7 | 3 | December 31, 2025 | 290% over the limit |
| Oxygen, dissolved [DO] | 1 | 5 | 3 | June 30, 2026 | 48% over the limit |
| pH | 2 | 4 | 0 | ||
| Solids, total suspended | 2 | 4 | 0 | ||
| Coliform, fecal general | 2 | 4 | 0 | ||
| Oil & Grease | 1 | 2 | 0 | ||
| Nitrogen, total [as N] | 1 | 2 | 0 | ||
| Phosphorus, total [as P] | 1 | 2 | 0 | ||
| Flow, in conduit or thru treatment plant | 1 | 2 | 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 LAG542477.
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 LAG542477 there.
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Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.