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Petroleum Refining, major discharger, Shreveport, Louisiana. NPDES permit LA0032417 expired Jun 30, 2025; its limits still apply. Last 12 months: over a limit once (last December 2025). Source: EPA ECHO, Oct 22, 2026.
| Period ending | Parameter | Reported | Limit | Over by |
|---|---|---|---|---|
| December 2025 | Chromium, hexavalent [as Cr], monthly average | < .11134 lb/d | ≤ .1 lb/d | 11% |
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| BOD, 5-day, 20 deg. C | monthly average | ≤ 1115 lb/d | all year | 001 |
| BOD, 5-day, 20 deg. C | daily maximum | ≤ 2162 lb/d | all year | 001 |
| Oxygen demand, chem. [high level] [COD] | monthly average | ≤ 7994 lb/d | all year | 001 |
| Oxygen demand, chem. [high level] [COD] | daily maximum | ≤ 15492 lb/d | all year | 001 |
| pH | instantaneous minimum | report only (SU) | all year | 001 |
| pH | instantaneous maximum | report only (SU) | all year | 001 |
| Solids, total suspended | monthly average | ≤ 967 lb/d | all year | 001 |
| Solids, total suspended | daily maximum | ≤ 1510 lb/d | all year | 001 |
| Oil & Grease | monthly average | ≤ 362 lb/d | all year | 001 |
| Oil & Grease | daily maximum | ≤ 691 lb/d | all year | 001 |
| Nitrogen, total [as N] | monthly average | report only (lb/d) | all year | 001 |
| Nitrogen, total [as N] | daily maximum | report only (lb/d) | all year | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 4.37 mg/L | all year | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 43 lb/d | all year | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 102 lb/d | all year | 001 |
| Phosphorus, total [as P] | monthly average | report only (lb/d) | all year | 001 |
| Phosphorus, total [as P] | daily maximum | report only (lb/d) | all year | 001 |
| Sulfide, total [as S] | monthly average | ≤ 5.3 lb/d | all year | 001 |
| Sulfide, total [as S] | daily maximum | ≤ 11.7 lb/d | all year | 001 |
| Chromium, hexavalent [as Cr] | monthly average | ≤ .1 lb/d | all year | 001 |
| Chromium, hexavalent [as Cr] | daily maximum | ≤ .239 lb/d | all year | 001 |
| Chromium, total [as Cr] | monthly average | ≤ 12.4 lb/d | all year | 001 |
| Chromium, total [as Cr] | daily maximum | ≤ 31.9 lb/d | all year | 001 |
| Phenolics, total recoverable | monthly average | ≤ .773 lb/d | all year | 001 |
| Phenolics, total recoverable | daily maximum | ≤ 1.84 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 | daily maximum | report only (MGD) | all year | 001 |
| Whole Effluent Toxicity [WET] - C. dubia | 7-day minimum | ≥ 97 % | all year | 001 |
| Whole Effluent Toxicity [WET] - C. dubia | monthly average minimum | ≥ 97 % | all year | 001 |
| Whole Effluent Toxicity [WET] - P. promelas | 7-day minimum | ≥ 97 % | all year | 001 |
| Whole Effluent Toxicity [WET] - P. promelas | monthly average minimum | ≥ 97 % | all year | 001 |
| Mercury, total [as Hg] | monthly average | ≤ .0004 lb/d | all year | 001 |
| Mercury, total [as Hg] | daily maximum | ≤ .001 lb/d | 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 |
| Pass/Fail Static Renewal 7 Day Chronic Ceriodaphnia dubia | 7-day minimum | report only (pass=0;fail=1) | all year | 001 |
| Pass/Fail Static Renewal 7 Day Chronic Ceriodaphnia dubia | monthly average minimum | report only (pass=0;fail=1) | all year | 001 |
| Pass/Fail Static Renewal 7Day Chronic Pimephales promelas | 7-day minimum | report only (pass=0;fail=1) | all year | 001 |
| Pass/Fail Static Renewal 7Day Chronic Pimephales promelas | monthly average minimum | report only (pass=0;fail=1) | all year | 001 |
| Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Ceriodaphnia dubia | 7-day minimum | report only (pass=0;fail=1) | all year | 001 |
| Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Ceriodaphnia dubia | monthly average minimum | report only (pass=0;fail=1) | all year | 001 |
| Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Pimephales promelas | 7-day minimum | report only (pass=0;fail=1) | all year | 001 |
| Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Pimephales promelas | monthly average minimum | report only (pass=0;fail=1) | all year | 001 |
| NOEC Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia | 7-day minimum | report only (%) | all year | 001 |
| NOEC Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia | monthly average minimum | report only (%) | all year | 001 |
| NOEC Lethal Static Renewal 7 Day Chronic Pimephales promelas | 7-day minimum | report only (%) | all year | 001 |
| NOEC Lethal Static Renewal 7 Day Chronic Pimephales promelas | monthly average minimum | report only (%) | all year | 001 |
| NOEC Sub-Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia | 7-day minimum | report only (%) | all year | 001 |
| NOEC Sub-Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia | monthly average minimum | report only (%) | all year | 001 |
| NOEC Sub-Lethal Static Renewal 7 Day Chronic Pimephales promelas | 7-day minimum | report only (%) | all year | 001 |
| NOEC Sub-Lethal Static Renewal 7 Day Chronic Pimephales promelas | monthly average minimum | report only (%) | all year | 001 |
| Coef Of Var Static Renewal 7Day Chronic Ceriodaphnia dubia | maximum | report only (%) | all year | 001 |
| Coef Of Var Static Renewal 7Day Chronic Pimephales promelas | maximum | report only (%) | all year | 001 |
| pH | instantaneous minimum | ≥ 6 SU | all year | 007 |
| pH | instantaneous maximum | ≤ 9 SU | all year | 007 |
| Oil & Grease | daily maximum | ≤ 15 mg/L | all year | 007 |
| Carbon, tot organic [TOC] | daily maximum | ≤ 50 mg/L | all year | 007 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 007 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 007 |
| pH | instantaneous minimum | ≥ 6 SU | all year | 008 |
| pH | instantaneous maximum | ≤ 9 SU | all year | 008 |
| Oil & Grease | daily maximum | ≤ 15 mg/L | all year | 008 |
| Carbon, tot organic [TOC] | daily maximum | ≤ 50 mg/L | all year | 008 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 008 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 008 |
| pH | instantaneous minimum | ≥ 6 SU | all year | 101 |
| pH | instantaneous maximum | ≤ 9 SU | all year | 101 |
| Solids, total suspended | daily maximum | ≤ 90 mg/L | all year | 101 |
| Solids, total suspended | daily maximum | ≤ 90 mg/L | all year | 101 |
| Oil & Grease | daily maximum | ≤ 15 mg/L | all year | 101 |
| Carbon, tot organic [TOC] | daily maximum | ≤ 50 mg/L | all year | 101 |
| Lead, total [as Pb] | daily maximum | ≤ 50 ug/L | all year | 101 |
| Benzene | daily maximum | ≤ 50 ug/L | all year | 101 |
| BTEX | daily maximum | ≤ 250 ug/L | all year | 101 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 101 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 101 |
Cited limits by parameter: Louisiana's rules and the federal ones.
Same industry: the 26 Petroleum Refining and Related Industries permits in Louisiana.
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On EPA ECHO: Facility report · DMR history
Your permit document is the final word. As JSON: /api/v1/permits/LA0032417 · MCP: https://passage-data.com/mcp