Clean Water Act discharge permit · NPDES LA0003638
MOSAIC FERTILIZER, LLC- TAFT PLANT, Hahnville, LA: NPDES LA0003638 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 18Pollutants under a numeric limit
- 2Pollutants with an effluent exceedance
- 0Inspections on file
- 0Formal enforcement actions
MOSAIC FERTILIZER, LLC- TAFT PLANT, held by Mosaic Fertilizer, LLC- Taft Plant, holds NPDES permit LA0003638, which discharges to 0701. EPA’s file records it issued January 19, 2018 and expiring February 28, 2023.
MOSAIC FERTILIZER, LLC- TAFT PLANT, Hahnville, Louisiana: Individual permit LA0003638, held by Mosaic Fertilizer, LLC- Taft Plant; Administratively continued (past its expiration date and still in force until reissued); issued January 19, 2018, term to February 28, 2023; discharges to 0701.
- Oxygen demand, chem. [high level] [COD]: 0 limits, 3 violations of any kind, 3 effluent exceedances, latest September 30, 2008, largest 33% over the limit.
- pH: 4 limits, 3 violations of any kind, 1 effluent exceedance, latest March 31, 2005.
- Radium 226, total: 4 limits, 17 violations of any kind, 0 effluent exceedances.
- Uranium, total: 4 limits, 8 violations of any kind, 0 effluent exceedances.
- Low Flow Pass/Fail Static Renewal 48Hr Acute Daphnia pulex: 0 limits, 6 violations of any kind, 0 effluent exceedances.
- LF Pass/Fail Static Renewal 48Hr Acute Pimephales promelas: 0 limits, 6 violations of any kind, 0 effluent exceedances.
- NOAEC Lethal Statis Renewal 48 Hr Acute Daphnia pulex: 0 limits, 6 violations of any kind, 0 effluent exceedances.
- NOAEC Lethal Static Renewal 48Hr acute Pimephales promelas: 0 limits, 6 violations of any kind, 0 effluent exceedances.
- Coef Of Var Static Renewal 48Hr Acute D. pulex: 0 limits, 6 violations of any kind, 0 effluent exceedances.
- Coef Of Var Static Renewal 48Hr Acute Pimephales promelas: 0 limits, 6 violations of any kind, 0 effluent exceedances.
- Solids, total suspended: 4 limits, 4 violations of any kind, 0 effluent exceedances.
- Nitrogen, ammonia total [as N]: 4 limits, 4 violations of any kind, 0 effluent exceedances.
- Nitrogen, Kjeldahl, total [as N]: 4 limits, 4 violations of any kind, 0 effluent exceedances.
- Nitrite + Nitrate total [as N]: 4 limits, 4 violations of any kind, 0 effluent exceedances.
- Phosphorus, total [as P]: 4 limits, 4 violations of any kind, 0 effluent exceedances.
- Phosphorus, dissolved: 4 limits, 4 violations of any kind, 0 effluent exceedances.
- Sulfate, total [as SO4]: 4 limits, 4 violations of any kind, 0 effluent exceedances.
- Fluoride, total [as F]: 4 limits, 4 violations of any kind, 0 effluent exceedances.
- Cadmium, total [as Cd]: 4 limits, 4 violations of any kind, 0 effluent exceedances.
- Aluminum, total [as Al]: 4 limits, 4 violations of any kind, 0 effluent exceedances.
- Metals, tox priority pollutants, total: 4 limits, 4 violations of any kind, 0 effluent exceedances.
- Alpha, gross particle activity: 4 limits, 4 violations of any kind, 0 effluent exceedances.
- Flow, in conduit or thru treatment plant: 4 limits, 2 violations of any kind, 0 effluent exceedances.
- Dock discharge of phosphorus: 0 limits, 2 violations of any kind, 0 effluent exceedances.
- Oil and grease: 0 limits, 1 violation of any kind, 0 effluent exceedances.
- Stream flow, estimated: 0 limits, 1 violation of any kind, 0 effluent exceedances.
- pH range excursions, > 60 minutes: 0 limits, 1 violation of any kind, 0 effluent exceedances.
- pH range excursions, monthly total accum: 0 limits, 1 violation of any kind, 0 effluent exceedances.
- Oil & Grease: 2 limits, 0 violations of any kind, 0 effluent exceedances.
- Carbon, tot organic [TOC]: 2 limits, 0 violations of any kind, 0 effluent exceedances.
- April 8, 2021: Effluent Violations - Unauthorized Discharge (ST6).
- April 8, 2021: Management Practice Violations - Improper Operation and Maintenance (ST6).
MOSAIC FERTILIZER, LLC- TAFT PLANT among its neighbors
EPA’s permit file holds 7 discharge permits in the Bayou Fortier subwatershed (HUC 080903010206), LA0003638 among them. Its county holds 70, 15 of them major permits; LA0003638 is a minor permit.
Other permits in the Bayou Fortier subwatershed (HUC 080903010206)
- AIR LIQUIDE LARGE INDUSTRIES US LP - TAFT ASU, Hahnville: LA0122475, minor permit, permit term to November 30, 2022
- DOW HYDROCARBONS & RESOURCES LLC - PSSB AND SSB1 BASIN CLOSURE, Hahnville: LAR10Q220, minor permit, permit term to December 5, 2026
- ST JOHN THE BAPTIST PAR-GARYVI, Garyville: LAL079596, major permit, discharging to SEG 070301 LOWER MISSISSIPPI RIVER, permit term to December 31, 2025
- ST. CHARLES PARISH COUNCIL, Hahnville: LAL073521, minor permit, permit term to December 31, 2025
- ST. JOHN THE BAPTIST PARISH -TIGERVILLE TREATMENT PLANT, Edgard: LA0079588, minor permit, discharging to SEG 0703 MISSISSIPPI RIVER BASIN, permit term to April 30, 2023
- TURN SERVICES LLC -BAYOU FLEET BARGE CLEANING, Hahnville: LAG030133, minor permit, permit term to January 31, 2029
Identity
| Facility as filed | MOSAIC FERTILIZER, LLC- TAFT PLANT |
|---|---|
| Permittee as filed | Mosaic Fertilizer, LLC- Taft Plant |
| NPDES ID | LA0003638 |
| Permit status | Administratively continued (past its expiration date and still in force until reissued) |
| Permit type | Individual permit |
| Discharger class | Minor discharger |
| Facility type | Not a publicly owned treatment works |
| Issued | January 19, 2018 |
| Expiration date | February 28, 2023 |
| Address | Hahnville, LA 70057 |
| Receiving water | 0701 |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Bayou Fortier (HUC 080903010206) |
| Other EPA IDs (FRS) | RCRA handler LAD065485187 |
Effluent limits and exceedances
- 30Pollutants on file
- 18Under a numeric limit
- 28With 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.
| Pollutant or measure | Limits | Violations, any kind | Effluent exceedances | Latest exceedance | Largest exceedance, as filed |
|---|---|---|---|---|---|
| Oxygen demand, chem. [high level] [COD] | 0 | 3 | 3 | September 30, 2008 | 33% over the limit |
| pH | 4 | 3 | 1 | March 31, 2005 | |
| Radium 226, total | 4 | 17 | 0 | ||
| Uranium, total | 4 | 8 | 0 | ||
| Low Flow Pass/Fail Static Renewal 48Hr Acute Daphnia pulex | 0 | 6 | 0 | ||
| LF Pass/Fail Static Renewal 48Hr Acute Pimephales promelas | 0 | 6 | 0 | ||
| NOAEC Lethal Statis Renewal 48 Hr Acute Daphnia pulex | 0 | 6 | 0 | ||
| NOAEC Lethal Static Renewal 48Hr acute Pimephales promelas | 0 | 6 | 0 | ||
| Coef Of Var Static Renewal 48Hr Acute D. pulex | 0 | 6 | 0 | ||
| Coef Of Var Static Renewal 48Hr Acute Pimephales promelas | 0 | 6 | 0 | ||
| Solids, total suspended | 4 | 4 | 0 | ||
| Nitrogen, ammonia total [as N] | 4 | 4 | 0 | ||
| Nitrogen, Kjeldahl, total [as N] | 4 | 4 | 0 | ||
| Nitrite + Nitrate total [as N] | 4 | 4 | 0 | ||
| Phosphorus, total [as P] | 4 | 4 | 0 | ||
| Phosphorus, dissolved | 4 | 4 | 0 | ||
| Sulfate, total [as SO4] | 4 | 4 | 0 | ||
| Fluoride, total [as F] | 4 | 4 | 0 | ||
| Cadmium, total [as Cd] | 4 | 4 | 0 | ||
| Aluminum, total [as Al] | 4 | 4 | 0 | ||
| Metals, tox priority pollutants, total | 4 | 4 | 0 | ||
| Alpha, gross particle activity | 4 | 4 | 0 | ||
| Flow, in conduit or thru treatment plant | 4 | 2 | 0 | ||
| Dock discharge of phosphorus | 0 | 2 | 0 | ||
| Oil and grease | 0 | 1 | 0 | ||
| Stream flow, estimated | 0 | 1 | 0 | ||
| pH range excursions, > 60 minutes | 0 | 1 | 0 | ||
| pH range excursions, monthly total accum | 0 | 1 | 0 | ||
| Oil & Grease | 2 | 0 | 0 | ||
| Carbon, tot organic [TOC] | 2 | 0 | 0 |
Inspections, violations and enforcement
- 2Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| April 8, 2021 | Effluent Violations - Unauthorized Discharge | ST6 |
| April 8, 2021 | Management Practice Violations - Improper Operation and Maintenance | ST6 |
Inspections
EPA’s inspection file holds no inspection for NPDES LA0003638.
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 LA0003638.
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Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.