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Petroleum Refining, major discharger, Corpus Christi, Texas. NPDES permit TX0006211 expired Mar 9, 2025; its limits still apply. Last 12 months: no values over a limit, 6 required values missing. Source: EPA ECHO, Oct 22, 2026.
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| BOD, 5-day, 20 deg. C | daily average | ≤ 585 lb/d | all year | 001 |
| BOD, 5-day, 20 deg. C | daily maximum | ≤ 1170 lb/d | all year | 001 |
| Oxygen demand, chem. [high level] [COD] | daily average | ≤ 6100 lb/d | all year | 001 |
| Oxygen demand, chem. [high level] [COD] | daily maximum | ≤ 12200 lb/d | all year | 001 |
| pH | minimum | ≥ 6 SU | all year | 001 |
| pH | maximum | ≤ 9 SU | all year | 001 |
| Solids, total suspended | daily average | ≤ 680 lb/d | all year | 001 |
| Solids, total suspended | daily maximum | ≤ 1295 lb/d | all year | 001 |
| Oil & Grease | daily average | ≤ 235 lb/d | all year | 001 |
| Oil & Grease | daily maximum | ≤ 390 lb/d | all year | 001 |
| Nitrogen, ammonia total [as N] | daily average | ≤ 215 lb/d | all year | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 430 lb/d | all year | 001 |
| Sulfide, total [as S] | daily average | ≤ 2.5 lb/d | all year | 001 |
| Sulfide, total [as S] | daily maximum | ≤ 5.4 lb/d | all year | 001 |
| Fluoride, total [as F] | daily maximum | ≤ 10 mg/L | all year | 001 |
| Chromium, hexavalent [as Cr] | daily average | ≤ .51 lb/d | all year | 001 |
| Chromium, hexavalent [as Cr] | daily maximum | ≤ 1.14 lb/d | all year | 001 |
| Chromium, total [as Cr] | daily average | ≤ 5.9 lb/d | all year | 001 |
| Chromium, total [as Cr] | daily maximum | ≤ 16.9 lb/d | all year | 001 |
| Flow, in conduit or thru treatment plant | daily average | ≤ 3.5 MGD | all year | 001 |
| Flow, in conduit or thru treatment plant | daily maximum | ≤ 6.2 MGD | all year | 001 |
| Phenolic compounds, total | daily average | ≤ 3.2 lb/d | all year | 001 |
| Phenolic compounds, total | daily maximum | ≤ 6.4 lb/d | all year | 001 |
| BOD, 5-day, 20 deg. C | daily average | ≤ 265 lb/d | all year | 002 |
| BOD, 5-day, 20 deg. C | daily maximum | ≤ 530 lb/d | all year | 002 |
| Oxygen demand, chem. [high level] [COD] | daily average | ≤ 2800 lb/d | all year | 002 |
| Oxygen demand, chem. [high level] [COD] | daily maximum | ≤ 5650 lb/d | all year | 002 |
| pH | minimum | ≥ 6 SU | all year | 002 |
| pH | maximum | ≤ 9 SU | all year | 002 |
| Solids, total suspended | daily average | ≤ 310 lb/d | all year | 002 |
| Solids, total suspended | daily maximum | ≤ 590 lb/d | all year | 002 |
| Oil & Grease | daily average | ≤ 110 lb/d | all year | 002 |
| Oil & Grease | daily maximum | ≤ 180 lb/d | all year | 002 |
| Nitrogen, ammonia total [as N] | daily average | ≤ 135 lb/d | all year | 002 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 270 lb/d | all year | 002 |
| Sulfide, total [as S] | daily average | ≤ 1.2 lb/d | all year | 002 |
| Sulfide, total [as S] | daily maximum | ≤ 2.5 lb/d | all year | 002 |
| Fluoride, total [as F] | daily maximum | ≤ 10 mg/L | all year | 002 |
| Chromium, hexavalent [as Cr] | daily average | ≤ .18 lb/d | all year | 002 |
| Chromium, hexavalent [as Cr] | daily maximum | ≤ .38 lb/d | all year | 002 |
| Chromium, total [as Cr] | daily average | ≤ 2.7 lb/d | all year | 002 |
| Chromium, total [as Cr] | daily maximum | ≤ 7.7 lb/d | all year | 002 |
| Flow, in conduit or thru treatment plant | daily average | ≤ 1.6 MGD | all year | 002 |
| Flow, in conduit or thru treatment plant | daily maximum | ≤ 3.1 MGD | all year | 002 |
| Chlorine, total residual | monthly minimum | ≥ 1 mg/L | all year | 002 |
| Chlorine, total residual | monthly maximum | report only (mg/L) | all year | 002 |
| Enterococci | daily average | ≤ 35 CFU/100mL | all year | 002 |
| Enterococci | daily maximum | ≤ 104 CFU/100mL | all year | 002 |
| Phenolic compounds, total | daily average | ≤ 1.4 lb/d | all year | 002 |
| Phenolic compounds, total | daily maximum | ≤ 3 lb/d | all year | 002 |
| pH | minimum | ≥ 6 SU | all year | 003 |
| pH | maximum | ≤ 9 SU | all year | 003 |
| Oil & Grease | daily maximum | ≤ 15 mg/L | all year | 003 |
| Carbon, tot organic [TOC] | daily maximum | ≤ 75 mg/L | all year | 003 |
| Chromium, total [as Cr] | daily maximum | ≤ .6 mg/L | all year | 003 |
| Benzene, ethylbenzene, toluene, xylene combination | daily average | report only (mg/L) | all year | 003 |
| Benzene, ethylbenzene, toluene, xylene combination | daily maximum | ≤ .5 mg/L | all year | 003 |
| Flow, in conduit or thru treatment plant | daily 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 | 004 |
| pH | maximum | ≤ 9 SU | all year | 004 |
| Oil & Grease | daily maximum | ≤ 15 mg/L | all year | 004 |
| Carbon, tot organic [TOC] | daily maximum | ≤ 50 mg/L | all year | 004 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 004 |
| pH | minimum | ≥ 6 SU | all year | 005 |
| pH | maximum | ≤ 9 SU | all year | 005 |
| Oil & Grease | daily maximum | ≤ 15 mg/L | all year | 005 |
| Carbon, tot organic [TOC] | daily maximum | ≤ 50 mg/L | all year | 005 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 005 |
| pH | minimum | ≥ 6 SU | all year | 006 |
| pH | maximum | ≤ 9 SU | all year | 006 |
| Oil & Grease | daily maximum | ≤ 15 mg/L | all year | 006 |
| Carbon, tot organic [TOC] | daily maximum | ≤ 50 mg/L | all year | 006 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 006 |
| pH | minimum | ≥ 6 SU | all year | 007 |
| pH | 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 | daily maximum | report only (MGD) | all year | 007 |
| pH | minimum | ≥ 6 SU | all year | 008 |
| pH | 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 | daily maximum | report only (MGD) | all year | 008 |
| pH | minimum | ≥ 6 SU | all year | 009 |
| pH | maximum | ≤ 9 SU | all year | 009 |
| Oil & Grease | daily maximum | ≤ 15 mg/L | all year | 009 |
| Carbon, tot organic [TOC] | daily maximum | ≤ 75 mg/L | all year | 009 |
| Chromium, total [as Cr] | daily maximum | ≤ .6 mg/L | all year | 009 |
| Copper, total [as Cu] | daily maximum | ≤ .349 mg/L | all year | 009 |
| Benzene, ethylbenzene, toluene, xylene combination | daily average | report only (mg/L) | all year | 009 |
| Benzene, ethylbenzene, toluene, xylene combination | daily maximum | ≤ .5 mg/L | all year | 009 |
| Flow, in conduit or thru treatment plant | daily average | report only (MGD) | all year | 009 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 009 |
| Whole effluent toxicity - retest #1 | 7-day minimum | report only (pass=0;fail=1) | all year | TX1 |
| Whole effluent toxicity - retest #1 | monthly average minimum | report only (pass=0;fail=1) | all year | TX1 |
| Whole effluent toxicity - retest #2 | 7-day minimum | report only (pass=0;fail=1) | all year | TX1 |
| Whole effluent toxicity - retest #2 | monthly average minimum | report only (pass=0;fail=1) | all year | TX1 |
| Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Americamysis bahia (Mysidopsis bahia) | 7-day minimum | report only (pass=0;fail=1) | all year | TX1 |
| Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Americamysis bahia (Mysidopsis bahia) | monthly average minimum | report only (pass=0;fail=1) | all year | TX1 |
| Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Menidia beryllina | 7-day minimum | report only (pass=0;fail=1) | all year | TX1 |
| Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Menidia beryllina | monthly average minimum | report only (pass=0;fail=1) | all year | TX1 |
| NOEC Lethal Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia) | 7-day minimum | report only (%) | all year | TX1 |
| NOEC Lethal Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia) | monthly average minimum | report only (%) | all year | TX1 |
| NOEC Lethal Static Renewal 7 Day Chronic Menidia beryllina | 7-day minimum | report only (%) | all year | TX1 |
| NOEC Lethal Static Renewal 7 Day Chronic Menidia beryllina | monthly average minimum | report only (%) | all year | TX1 |
| NOEC Sub-Lethal Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia) | 7-day minimum | report only (%) | all year | TX1 |
| NOEC Sub-Lethal Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia) | monthly average minimum | report only (%) | all year | TX1 |
| NOEC Sub-Lethal Static Renewal 7 Day Chronic Menidia beryllina | 7-day minimum | report only (%) | all year | TX1 |
| NOEC Sub-Lethal Static Renewal 7 Day Chronic Menidia beryllina | monthly average minimum | report only (%) | all year | TX1 |
| Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia) | 7-day minimum | report only (pass=0;fail=1) | all year | TX1 |
| Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia) | monthly average minimum | report only (pass=0;fail=1) | all year | TX1 |
| Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Menidia beryllina | 7-day minimum | report only (pass=0;fail=1) | all year | TX1 |
| Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Menidia beryllina | monthly average minimum | report only (pass=0;fail=1) | all year | TX1 |
| LOEC Lethal Survival Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia) | 7-day minimum | report only (%) | all year | TX1 |
| LOEC Lethal Survival Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia) | monthly average minimum | report only (%) | all year | TX1 |
| LOEC Lethal Survival Static Renewal 7 Day Chronic Menidia beryllina | 7-day minimum | report only (%) | all year | TX1 |
| LOEC Lethal Survival Static Renewal 7 Day Chronic Menidia beryllina | monthly average minimum | report only (%) | all year | TX1 |
| LOEC Sub-Lethal Reproduction Static Renewal 7 Day Chronic Americamysis bahia (Mysidopsis bahia) | 7-day minimum | report only (%) | all year | TX1 |
| LOEC Sub-Lethal Reproduction Static Renewal 7 Day Chronic Americamysis bahia (Mysidopsis bahia) | monthly average minimum | report only (%) | all year | TX1 |
| LOEC Sub-Lethal Growth Static Renewal 7 Day Chronic Menidia beryllina | 7-day minimum | report only (%) | all year | TX1 |
| LOEC Sub-Lethal Growth Static Renewal 7 Day Chronic Menidia beryllina | monthly average minimum | report only (%) | all year | TX1 |
| Whole effluent toxicity - retest #1 | 48-hour minimum | report only (pass=0;fail=1) | all year | TX2 |
| Whole effluent toxicity - retest #1 | monthly average minimum | report only (pass=0;fail=1) | all year | TX2 |
| Whole effluent toxicity - retest #2 | 48-hour minimum | report only (pass=0;fail=1) | all year | TX2 |
| Whole effluent toxicity - retest #2 | monthly average minimum | report only (pass=0;fail=1) | all year | TX2 |
| LF Pass/Fail Static Renewal 48Hr Acute Americamysis bahia (formerly Mysidopis bahia) | 48-hour minimum | report only (pass=0;fail=1) | all year | TX2 |
| LF Pass/Fail Static Renewal 48Hr Acute Americamysis bahia (formerly Mysidopis bahia) | monthly average minimum | report only (pass=0;fail=1) | all year | TX2 |
| Low Flow Pass/Fail Static Renewal 48Hr Acute Menidia beryllina | 48-hour minimum | report only (pass=0;fail=1) | all year | TX2 |
| Low Flow Pass/Fail Static Renewal 48Hr Acute Menidia beryllina | monthly average minimum | report only (pass=0;fail=1) | all year | TX2 |
| NOAEC Lethal Static Renewal 48HR Acute Americamysis bahia (formerly Mysidopsis bahia) | 48-hour minimum | report only (%) | all year | TX2 |
| NOAEC Lethal Static Renewal 48HR Acute Americamysis bahia (formerly Mysidopsis bahia) | monthly average minimum | report only (%) | all year | TX2 |
| NOAEC Lethal Static Renewal 48HR Acute Menidia beryllina | 48-hour minimum | report only (%) | all year | TX2 |
| NOAEC Lethal Static Renewal 48HR Acute Menidia beryllina | monthly average minimum | report only (%) | all year | TX2 |
| LOAEC Lethal Survival Static Renewal 48Hr Acute Americamysis bahia (formerly Mysidopsis bahia) | 48-hour minimum | report only (%) | all year | TX2 |
| LOAEC Lethal Survival Static Renewal 48Hr Acute Americamysis bahia (formerly Mysidopsis bahia) | monthly average minimum | report only (%) | all year | TX2 |
| LOAEC Lethal Survival Static Renewal 48Hr Acute Menidia beryllina | 48-hour minimum | report only (%) | all year | TX2 |
| LOAEC Lethal Survival Static Renewal 48Hr Acute Menidia beryllina | monthly average minimum | report only (%) | all year | TX2 |
| Whole effluent toxicity - retest #1 | single sample | report only (pass=0;fail=1) | all year | TXA |
| Whole effluent toxicity - retest #2 | single sample | report only (pass=0;fail=1) | all year | TXA |
| LC50 Pass/Fail Static 24Hr Acute Americamysis bahia (formerly Mysidopsis bahia) | single sample | report only (pass=0;fail=1) | all year | TXA |
| LC50 Pass/Fail Static 24Hr Acute Menidia beryllina | single sample | report only (pass=0;fail=1) | all year | TXA |
| Whole effluent toxicity - retest #1 | single sample | report only (pass=0;fail=1) | all year | TXB |
| Whole effluent toxicity - retest #2 | single sample | report only (pass=0;fail=1) | all year | TXB |
| LC50 Pass/Fail Static 24Hr Acute Americamysis bahia (formerly Mysidopsis bahia) | single sample | report only (pass=0;fail=1) | all year | TXB |
| LC50 Pass/Fail Static 24Hr Acute Menidia beryllina | single sample | report only (pass=0;fail=1) | all year | TXB |
Cited limits by parameter: Texas's rules and the federal ones.
Same industry: the 32 Petroleum Refining and Related Industries permits in Texas.
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On EPA ECHO: Facility report · DMR history
Your permit document is the final word. As JSON: /api/v1/permits/TX0006211 · MCP: https://passage-data.com/mcp