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National Security, Doyline, Louisiana. NPDES permit LA0003549, in force until Dec 14, 2027. Last 12 months: over a limit 2 times (last April 2026). Source: EPA ECHO, Oct 22, 2026.
| Period ending | Parameter | Reported | Limit | Over by |
|---|---|---|---|---|
| February 2026 | BOD, 5-day, 20 deg. C, monthly average | 21.8 lb/d | ≤ 18.5 lb/d | 18% |
| April 2026 | BOD, 5-day, 20 deg. C, monthly average | 10.7 mg/L | ≤ 10 mg/L | 7% |
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| BOD, 5-day, 20 deg. C | monthly average | ≤ 10 mg/L | all year | 01S |
| BOD, 5-day, 20 deg. C | monthly average | ≤ 10 mg/L | all year | 01S |
| BOD, 5-day, 20 deg. C | daily maximum | ≤ 15 mg/L | all year | 01S |
| BOD, 5-day, 20 deg. C | daily maximum | ≤ 15 mg/L | all year | 01S |
| BOD, 5-day, 20 deg. C | monthly average | ≤ 18.5 lb/d | all year | 01S |
| BOD, 5-day, 20 deg. C | monthly average | ≤ 18.5 lb/d | all year | 01S |
| pH | instantaneous minimum | ≥ 6 SU | all year | 01S |
| pH | instantaneous minimum | ≥ 6 SU | all year | 01S |
| pH | instantaneous maximum | ≤ 9 SU | all year | 01S |
| pH | instantaneous maximum | ≤ 9 SU | all year | 01S |
| Solids, total suspended | monthly average | ≤ 15 mg/L | all year | 01S |
| Solids, total suspended | monthly average | ≤ 15 mg/L | all year | 01S |
| Solids, total suspended | daily maximum | ≤ 23 mg/L | all year | 01S |
| Solids, total suspended | daily maximum | ≤ 23 mg/L | all year | 01S |
| Solids, total suspended | monthly average | ≤ 27.8 lb/d | all year | 01S |
| Solids, total suspended | monthly average | ≤ 27.8 lb/d | all year | 01S |
| Oil & Grease | daily maximum | ≤ 15 mg/L | all year | 01S |
| Oil & Grease | daily maximum | ≤ 15 mg/L | all year | 01S |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 01S |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 01S |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 01S |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 01S |
| Coliform, fecal general | monthly geometric mean | ≤ 200 #/100mL | all year | 01S |
| Coliform, fecal general | monthly geometric mean | ≤ 200 #/100mL | all year | 01S |
| Coliform, fecal general | daily maximum | ≤ 400 #/100mL | all year | 01S |
| Coliform, fecal general | daily maximum | ≤ 400 #/100mL | all year | 01S |
| Whole effluent toxicity - retest #1 | 48-hour minimum | report only (pass=0;fail=1) | all year | 01T |
| Whole effluent toxicity - retest #1 | 48-hour minimum | report only (pass=0;fail=1) | all year | 01T |
| Whole effluent toxicity - retest #1 | monthly average minimum | report only (pass=0;fail=1) | all year | 01T |
| Whole effluent toxicity - retest #1 | monthly average minimum | report only (pass=0;fail=1) | all year | 01T |
| Whole effluent toxicity - retest #2 | 48-hour minimum | report only (pass=0;fail=1) | all year | 01T |
| Whole effluent toxicity - retest #2 | 48-hour minimum | report only (pass=0;fail=1) | all year | 01T |
| Whole effluent toxicity - retest #2 | monthly average minimum | report only (pass=0;fail=1) | all year | 01T |
| Whole effluent toxicity - retest #2 | monthly average minimum | report only (pass=0;fail=1) | all year | 01T |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 01T |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 01T |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 01T |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 01T |
| Whole Effluent Toxicity - Retest #3 | 48-hour minimum | report only (pass=0;fail=1) | all year | 01T |
| Whole Effluent Toxicity - Retest #3 | 48-hour minimum | report only (pass=0;fail=1) | all year | 01T |
| Whole Effluent Toxicity - Retest #3 | monthly average minimum | report only (pass=0;fail=1) | all year | 01T |
| Whole Effluent Toxicity - Retest #3 | monthly average minimum | report only (pass=0;fail=1) | all year | 01T |
| Low Flow Pass/Fail Static Renewal 48Hr Acute Daphnia pulex | 48-hour minimum | report only (pass=0;fail=1) | all year | 01T |
| Low Flow Pass/Fail Static Renewal 48Hr Acute Daphnia pulex | monthly average minimum | report only (pass=0;fail=1) | all year | 01T |
| LF Pass/Fail Static Renewal 48Hr Acute Pimephales promelas | 48-hour minimum | report only (pass=0;fail=1) | all year | 01T |
| LF Pass/Fail Static Renewal 48Hr Acute Pimephales promelas | monthly average minimum | report only (pass=0;fail=1) | all year | 01T |
| NOAEC Lethal Statis Renewal 48 Hr Acute Daphnia pulex | 48-hour minimum | report only (%) | all year | 01T |
| NOAEC Lethal Statis Renewal 48 Hr Acute Daphnia pulex | monthly average minimum | report only (%) | all year | 01T |
| NOAEC Lethal Static Renewal 48Hr acute Pimephales promelas | 48-hour minimum | report only (%) | all year | 01T |
| NOAEC Lethal Static Renewal 48Hr acute Pimephales promelas | monthly average minimum | report only (%) | all year | 01T |
| Coef Of Var Static Renewal 48Hr Acute D. pulex | maximum | report only (%) | all year | 01T |
| Coef Of Var Static Renewal 48Hr Acute Pimephales promelas | maximum | report only (%) | all year | 01T |
Cited limits by parameter: Louisiana's rules and the federal ones.
Same industry: the 4 National Security and International Affairs 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/LA0003549 · MCP: https://passage-data.com/mcp