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Industrial Gases, New Orleans, Louisiana. NPDES permit LA0003280, in force until Feb 29, 2028. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| Oxygen demand, chem. [high level] [COD] | monthly average | ≤ 500 lb/d | all year | 001 |
| Oxygen demand, chem. [high level] [COD] | monthly average | ≤ 500 lb/d | all year | 001 |
| Oxygen demand, chem. [high level] [COD] | daily maximum | ≤ 1000 lb/d | all year | 001 |
| Oxygen demand, chem. [high level] [COD] | daily maximum | ≤ 1000 lb/d | all year | 001 |
| pH | instantaneous minimum | report only (SU) | all year | 001 |
| pH | instantaneous minimum | report only (SU) | all year | 001 |
| pH | instantaneous maximum | report only (SU) | all year | 001 |
| pH | instantaneous maximum | report only (SU) | all year | 001 |
| Solids, total suspended | monthly average | ≤ 150 lb/d | all year | 001 |
| Solids, total suspended | monthly average | ≤ 150 lb/d | all year | 001 |
| Solids, total suspended | daily maximum | ≤ 350 lb/d | all year | 001 |
| Solids, total suspended | daily maximum | ≤ 350 lb/d | all year | 001 |
| Oil & Grease | monthly average | ≤ 10 mg/L | all year | 001 |
| Oil & Grease | monthly average | ≤ 10 mg/L | all year | 001 |
| Oil & Grease | daily maximum | ≤ 15 mg/L | all year | 001 |
| Oil & Grease | daily maximum | ≤ 15 mg/L | all year | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 147.7 lb/d | all year | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 147.7 lb/d | all year | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 299.4 lb/d | all year | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 299.4 lb/d | all year | 001 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 001 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 001 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 001 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 001 |
| pH range excursions, > 60 minutes | monthly total | ≤ 0 occur/mo | all year | 001 |
| pH range excursions, > 60 minutes | monthly total | ≤ 0 occur/mo | all year | 001 |
| pH range excursions, monthly total accum | monthly total | ≤ 446 min | all year | 001 |
| pH range excursions, monthly total accum | monthly total | ≤ 446 min | all year | 001 |
| pH | instantaneous minimum | ≥ 6 SU | all year | 002 |
| pH | instantaneous minimum | ≥ 6 SU | all year | 002 |
| pH | instantaneous maximum | ≤ 9 SU | all year | 002 |
| pH | instantaneous maximum | ≤ 9 SU | all year | 002 |
| Oil & Grease | daily maximum | ≤ 15 mg/L | all year | 002 |
| Oil & Grease | daily maximum | ≤ 15 mg/L | all year | 002 |
| Carbon, tot organic [TOC] | daily maximum | ≤ 50 mg/L | all year | 002 |
| Carbon, tot organic [TOC] | daily maximum | ≤ 50 mg/L | all year | 002 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 002 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 002 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 002 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 002 |
Cited limits by parameter: Louisiana's rules and the federal ones.
Same industry: the 130 Chemicals and Allied Products permits in Louisiana.
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