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Petroleum Refining, major discharger, Norco, Louisiana. NPDES permit LA0003522 expired Oct 31, 2025; its limits still apply. Last 12 months: over a limit 10 times (last July 2026). Source: EPA ECHO, Oct 22, 2026.
| Period ending | Outfall | Parameter | Reported | Limit | Over by |
|---|---|---|---|---|---|
| November 2025 | 002 | Sulfide, total [as S], daily maximum | > 18.5 lb/d | ≤ 13 lb/d | — |
| December 2025 | 002 | Sulfide, total [as S], daily maximum | < 28.7 lb/d | ≤ 13 lb/d | 121% |
| December 2025 | 002 | Sulfide, total [as S], monthly average | < 11.3 lb/d | ≤ 5.8 lb/d | 95% |
| December 2025 | 003 | pH, instantaneous maximum | > 9.5 SU | ≤ 9 SU | — |
| January 2026 | 002 | Sulfide, total [as S], daily maximum | 24.5 lb/d | ≤ 13 lb/d | 88% |
| January 2026 | 002 | Sulfide, total [as S], monthly average | 14.8 lb/d | ≤ 5.8 lb/d | 155% |
| March 2026 | 002 | BOD, 5-day, 20 deg. C, daily maximum | 3644.5 lb/d | ≤ 2496 lb/d | 46% |
| March 2026 | 002 | Solids, total suspended, daily maximum | 3715.8 lb/d | ≤ 3581 lb/d | 4% |
| June 2026 | 002 | Sulfide, total [as S], daily maximum | 15.9 lb/d | ≤ 13 lb/d | 22% |
| July 2026 | 002 | pH range excursions, > 60 minutes, monthly total | 2 occur/mo | ≤ 0 occur/mo | — |
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| BOD, 5-day, 20 deg. C | monthly average | ≤ 1347 lb/d | all year | 002 |
| BOD, 5-day, 20 deg. C | daily maximum | ≤ 2496 lb/d | all year | 002 |
| pH | minimum | report only (SU) | all year | 002 |
| pH | maximum | report only (SU) | all year | 002 |
| Solids, total suspended | monthly average | ≤ 2273 lb/d | all year | 002 |
| Solids, total suspended | daily maximum | ≤ 3581 lb/d | all year | 002 |
| Oil & Grease | monthly average | ≤ 430 lb/d | all year | 002 |
| Oil & Grease | daily maximum | ≤ 806 lb/d | all year | 002 |
| Nitrogen, total [as N] | monthly average | report only (lb/d) | all year | 002 |
| Nitrogen, total [as N] | daily maximum | report only (lb/d) | all year | 002 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 632 lb/d | all year | 002 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 1372 lb/d | all year | 002 |
| Phosphorus, total [as P] | monthly average | report only (lb/d) | all year | 002 |
| Phosphorus, total [as P] | daily maximum | report only (lb/d) | all year | 002 |
| Carbon, tot organic [TOC] | monthly average | ≤ 2964 lb/d | all year | 002 |
| Carbon, tot organic [TOC] | daily maximum | ≤ 5492 lb/d | all year | 002 |
| Sulfide, total [as S] | monthly average | ≤ 5.8 lb/d | all year | 002 |
| Sulfide, total [as S] | daily maximum | ≤ 13 lb/d | all year | 002 |
| Chromium, hexavalent [as Cr] | monthly average | ≤ 2.2 lb/d | all year | 002 |
| Chromium, hexavalent [as Cr] | daily maximum | ≤ 5 lb/d | all year | 002 |
| Chromium, total [as Cr] | monthly average | ≤ 24.7 lb/d | all year | 002 |
| Chromium, total [as Cr] | daily maximum | ≤ 70.9 lb/d | all year | 002 |
| Whole effluent toxicity - retest #1 | monthly average minimum | report only (pass=0;fail=1) | all year | 002 |
| Whole effluent toxicity - retest #1 | monthly average minimum | report only (pass=0;fail=1) | all year | 002 |
| Whole effluent toxicity - retest #1 | 48-hour minimum | report only (pass=0;fail=1) | all year | 002 |
| Whole effluent toxicity - retest #1 | 48-hour minimum | report only (pass=0;fail=1) | all year | 002 |
| Whole effluent toxicity - retest #2 | monthly average minimum | report only (pass=0;fail=1) | all year | 002 |
| Whole effluent toxicity - retest #2 | monthly average minimum | report only (pass=0;fail=1) | all year | 002 |
| Whole effluent toxicity - retest #2 | 48-hour minimum | report only (pass=0;fail=1) | all year | 002 |
| Whole effluent toxicity - retest #2 | 48-hour minimum | report only (pass=0;fail=1) | all year | 002 |
| Phenolics, total recoverable | monthly average | ≤ 9.2 lb/d | all year | 002 |
| Phenolics, total recoverable | daily maximum | ≤ 18.1 lb/d | all year | 002 |
| Hexachlorobenzene | monthly average | ≤ .43 lb/d | all year | 002 |
| Hexachlorobenzene | daily maximum | ≤ 1.03 lb/d | 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 |
| Whole Effluent Toxicity - Retest #3 | monthly average minimum | report only (pass=0;fail=1) | all year | 002 |
| Whole Effluent Toxicity - Retest #3 | monthly average minimum | report only (pass=0;fail=1) | all year | 002 |
| Whole Effluent Toxicity - Retest #3 | 48-hour minimum | report only (pass=0;fail=1) | all year | 002 |
| Whole Effluent Toxicity - Retest #3 | 48-hour minimum | report only (pass=0;fail=1) | all year | 002 |
| pH range excursions, > 60 minutes | monthly total | ≤ 0 occur/mo | all year | 002 |
| pH range excursions, monthly total accum | monthly total | ≤ 446 min | all year | 002 |
| Low Flow Pass/Fail Static Renewal 48Hr Acute Daphnia pulex | monthly average minimum | report only (pass=0;fail=1) | all year | 002 |
| Low Flow Pass/Fail Static Renewal 48Hr Acute Daphnia pulex | 48-hour minimum | report only (pass=0;fail=1) | all year | 002 |
| LF Pass/Fail Static Renewal 48Hr Acute Pimephales promelas | monthly average minimum | report only (pass=0;fail=1) | all year | 002 |
| LF Pass/Fail Static Renewal 48Hr Acute Pimephales promelas | 48-hour minimum | report only (pass=0;fail=1) | all year | 002 |
| NOAEC Lethal Statis Renewal 48 Hr Acute Daphnia pulex | monthly average minimum | report only (%) | all year | 002 |
| NOAEC Lethal Statis Renewal 48 Hr Acute Daphnia pulex | 48-hour minimum | report only (%) | all year | 002 |
| NOAEC Lethal Static Renewal 48Hr acute Pimephales promelas | monthly average minimum | report only (%) | all year | 002 |
| NOAEC Lethal Static Renewal 48Hr acute Pimephales promelas | 48-hour minimum | report only (%) | all year | 002 |
| Coef Of Var Static Renewal 48Hr Acute D. pulex | maximum | report only (%) | all year | 002 |
| Coef Of Var Static Renewal 48Hr Acute Pimephales promelas | maximum | report only (%) | all year | 002 |
| pH | instantaneous minimum | ≥ 6 SU | all year | 003 |
| pH | instantaneous maximum | ≤ 9 SU | all year | 003 |
| Oil & Grease | daily maximum | ≤ 15 mg/L | all year | 003 |
| Carbon, tot organic [TOC] | daily maximum | ≤ 50 mg/L | all year | 003 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 003 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 003 |
| pH | minimum | ≥ 6 SU | all year | 102 |
| pH | maximum | ≤ 9 SU | all year | 102 |
| Copper, total [as Cu] | monthly average | ≤ 1450 ug/L | all year | 102 |
| Copper, total [as Cu] | daily maximum | ≤ 3380 ug/L | all year | 102 |
| Zinc, total [as Zn] | monthly average | ≤ 1050 ug/L | all year | 102 |
| Zinc, total [as Zn] | daily maximum | ≤ 2610 ug/L | all year | 102 |
| Carbon tetrachloride | monthly average | ≤ 142 ug/L | all year | 102 |
| Carbon tetrachloride | daily maximum | ≤ 380 ug/L | all year | 102 |
| 1,2-Dichloroethane | monthly average | ≤ 180 ug/L | all year | 102 |
| 1,2-Dichloroethane | daily maximum | ≤ 574 ug/L | all year | 102 |
| Chloroform | monthly average | ≤ 111 ug/L | all year | 102 |
| Chloroform | daily maximum | ≤ 325 ug/L | all year | 102 |
| Toluene | monthly average | ≤ 28 ug/L | all year | 102 |
| Toluene | daily maximum | ≤ 74 ug/L | all year | 102 |
| Benzene | monthly average | ≤ 57 ug/L | all year | 102 |
| Benzene | daily maximum | ≤ 134 ug/L | all year | 102 |
| Acenaphthylene | monthly average | ≤ 19 ug/L | all year | 102 |
| Acenaphthylene | daily maximum | ≤ 47 ug/L | all year | 102 |
| Acenaphthene | monthly average | ≤ 19 ug/L | all year | 102 |
| Acenaphthene | daily maximum | ≤ 47 ug/L | all year | 102 |
| Acrylonitrile | monthly average | ≤ 94 ug/L | all year | 102 |
| Acrylonitrile | daily maximum | ≤ 232 ug/L | all year | 102 |
| Anthracene | monthly average | ≤ 19 ug/L | all year | 102 |
| Anthracene | daily maximum | ≤ 47 ug/L | all year | 102 |
| Benzo[b]fluoranthene | monthly average | ≤ 20 ug/L | all year | 102 |
| Benzo[b]fluoranthene | daily maximum | ≤ 48 ug/L | all year | 102 |
| Benzo[k]fluoranthene | monthly average | ≤ 19 ug/L | all year | 102 |
| Benzo[k]fluoranthene | daily maximum | ≤ 47 ug/L | all year | 102 |
| Benzo[a]pyrene | monthly average | ≤ 20 ug/L | all year | 102 |
| Benzo[a]pyrene | daily maximum | ≤ 48 ug/L | all year | 102 |
| Chlorobenzene | monthly average | ≤ 142 ug/L | all year | 102 |
| Chlorobenzene | daily maximum | ≤ 380 ug/L | all year | 102 |
| Chrysene | monthly average | ≤ 19 ug/L | all year | 102 |
| Chrysene | daily maximum | ≤ 47 ug/L | all year | 102 |
| Diethyl phthalate | monthly average | ≤ 46 ug/L | all year | 102 |
| Diethyl phthalate | daily maximum | ≤ 113 ug/L | all year | 102 |
| Dimethyl phthalate | monthly average | ≤ 19 ug/L | all year | 102 |
| Dimethyl phthalate | daily maximum | ≤ 47 ug/L | all year | 102 |
| Ethylbenzene | monthly average | ≤ 142 ug/L | all year | 102 |
| Ethylbenzene | daily maximum | ≤ 380 ug/L | all year | 102 |
| Fluoranthene | monthly average | ≤ 22 ug/L | all year | 102 |
| Fluoranthene | daily maximum | ≤ 54 ug/L | all year | 102 |
| Fluorene | monthly average | ≤ 19 ug/L | all year | 102 |
| Fluorene | daily maximum | ≤ 47 ug/L | all year | 102 |
| Hexachlorobutadiene | monthly average | ≤ 142 ug/L | all year | 102 |
| Hexachlorobutadiene | daily maximum | ≤ 380 ug/L | all year | 102 |
| Hexachloroethane | monthly average | ≤ 196 ug/L | all year | 102 |
| Hexachloroethane | daily maximum | ≤ 794 ug/L | all year | 102 |
| Methyl chloride [Chloromethane] | monthly average | ≤ 110 ug/L | all year | 102 |
| Methyl chloride [Chloromethane] | daily maximum | ≤ 295 ug/L | all year | 102 |
| Methylene chloride | monthly average | ≤ 36 ug/L | all year | 102 |
| Methylene chloride | daily maximum | ≤ 170 ug/L | all year | 102 |
| Nitrobenzene | monthly average | ≤ 2237 ug/L | all year | 102 |
| Nitrobenzene | daily maximum | ≤ 6402 ug/L | all year | 102 |
| Phenanthrene | monthly average | ≤ 19 ug/L | all year | 102 |
| Phenanthrene | daily maximum | ≤ 47 ug/L | all year | 102 |
| Pyrene | monthly average | ≤ 20 ug/L | all year | 102 |
| Pyrene | daily maximum | ≤ 48 ug/L | all year | 102 |
| Tetrachloroethylene | monthly average | ≤ 52 ug/L | all year | 102 |
| Tetrachloroethylene | daily maximum | ≤ 164 ug/L | all year | 102 |
| 1,1-Dichloroethane | monthly average | ≤ 22 ug/L | all year | 102 |
| 1,1-Dichloroethane | daily maximum | ≤ 59 ug/L | all year | 102 |
| 1,1-Dichloroethylene | monthly average | ≤ 22 ug/L | all year | 102 |
| 1,1-Dichloroethylene | daily maximum | ≤ 60 ug/L | all year | 102 |
| 1,1,1-Trichloroethane | monthly average | ≤ 22 ug/L | all year | 102 |
| 1,1,1-Trichloroethane | daily maximum | ≤ 59 ug/L | all year | 102 |
| 1,1,2-Trichloroethane | monthly average | ≤ 32 ug/L | all year | 102 |
| 1,1,2-Trichloroethane | daily maximum | ≤ 127 ug/L | all year | 102 |
| Benzo[a]anthracene | monthly average | ≤ 19 ug/L | all year | 102 |
| Benzo[a]anthracene | daily maximum | ≤ 47 ug/L | all year | 102 |
| 1,2-Dichlorobenzene | monthly average | ≤ 196 ug/L | all year | 102 |
| 1,2-Dichlorobenzene | daily maximum | ≤ 794 ug/L | all year | 102 |
| 1,2-Dichloropropane | monthly average | ≤ 196 ug/L | all year | 102 |
| 1,2-Dichloropropane | daily maximum | ≤ 794 ug/L | all year | 102 |
| trans-1,2-Dichloroethylene | monthly average | ≤ 25 ug/L | all year | 102 |
| trans-1,2-Dichloroethylene | daily maximum | ≤ 66 ug/L | all year | 102 |
| 1,2,4-Trichlorobenzene | monthly average | ≤ 196 ug/L | all year | 102 |
| 1,2,4-Trichlorobenzene | daily maximum | ≤ 794 ug/L | all year | 102 |
| 1,3-Dichlorobenzene | monthly average | ≤ 142 ug/L | all year | 102 |
| 1,3-Dichlorobenzene | daily maximum | ≤ 380 ug/L | all year | 102 |
| 1,4-Dichlorobenzene | monthly average | ≤ 142 ug/L | all year | 102 |
| 1,4-Dichlorobenzene | daily maximum | ≤ 380 ug/L | all year | 102 |
| 2-Nitrophenol | monthly average | ≤ 65 ug/L | all year | 102 |
| 2-Nitrophenol | daily maximum | ≤ 231 ug/L | all year | 102 |
| 2,4-Dimethylphenol | monthly average | ≤ 19 ug/L | all year | 102 |
| 2,4-Dimethylphenol | daily maximum | ≤ 47 ug/L | all year | 102 |
| 2,4-Dinitrophenol | monthly average | ≤ 1207 ug/L | all year | 102 |
| 2,4-Dinitrophenol | daily maximum | ≤ 4291 ug/L | all year | 102 |
| 4-Nitrophenol | monthly average | ≤ 162 ug/L | all year | 102 |
| 4-Nitrophenol | daily maximum | ≤ 576 ug/L | all year | 102 |
| 4,6-Dinitro-o-cresol | monthly average | ≤ 78 ug/L | all year | 102 |
| 4,6-Dinitro-o-cresol | daily maximum | ≤ 277 ug/L | all year | 102 |
| Phenol | monthly average | ≤ 19 ug/L | all year | 102 |
| Phenol | daily maximum | ≤ 47 ug/L | all year | 102 |
| Naphthalene | monthly average | ≤ 19 ug/L | all year | 102 |
| Naphthalene | daily maximum | ≤ 47 ug/L | all year | 102 |
| Di[2-ethylhexyl] phthalate [DEHP] | monthly average | ≤ 95 ug/L | all year | 102 |
| Di[2-ethylhexyl] phthalate [DEHP] | daily maximum | ≤ 258 ug/L | all year | 102 |
| Di-n-butyl phthalate | monthly average | ≤ 20 ug/L | all year | 102 |
| Di-n-butyl phthalate | daily maximum | ≤ 43 ug/L | all year | 102 |
| Vinyl chloride | monthly average | ≤ 97 ug/L | all year | 102 |
| Vinyl chloride | daily maximum | ≤ 172 ug/L | all year | 102 |
| Trichloroethylene | monthly average | ≤ 26 ug/L | all year | 102 |
| Trichloroethylene | daily maximum | ≤ 69 ug/L | all year | 102 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 102 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 102 |
| 1,3-Dichloropropene | monthly average | ≤ 196 ug/L | all year | 102 |
| 1,3-Dichloropropene | daily maximum | ≤ 794 ug/L | all year | 102 |
| Chloroethane | monthly average | ≤ 110 ug/L | all year | 102 |
| Chloroethane | daily maximum | ≤ 295 ug/L | all year | 102 |
| pH | instantaneous minimum | ≥ 6 SU | all year | 202 |
| pH | instantaneous maximum | ≤ 9 SU | all year | 202 |
| Lead, total [as Pb] | daily maximum | ≤ 50 ug/L | all year | 202 |
| Benzene | daily maximum | ≤ 50 ug/L | all year | 202 |
| BTEX | daily maximum | ≤ 250 ug/L | all year | 202 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 202 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 202 |
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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Your permit document is the final word. As JSON: /api/v1/permits/LA0003522 · MCP: https://passage-data.com/mcp