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Petroleum Refining, major discharger, Corpus Christi, Texas. NPDES permit TX0006289 expired Feb 28, 2025; its limits still apply. Last 12 months: over a limit 5 times (last July 2026), 1 required value missing, 1 of 91 reports late. Source: EPA ECHO, Oct 22, 2026.
| Period ending | Outfall | Parameter | Reported | Limit | Over by |
|---|---|---|---|---|---|
| November 2025 | 001 | Solids, total suspended, daily maximum | 1647.8 lb/d | ≤ 1630 lb/d | 1% |
| November 2025 | SUM | Solids, total suspended, daily maximum | 1647.8 lb/d | ≤ 1630 lb/d | 1% |
| June 2026 | 001 | Solids, total suspended, daily maximum | 2840 lb/d | ≤ 1630 lb/d | 74% |
| June 2026 | SUM | Solids, total suspended, daily maximum | 2839.6 lb/d | ≤ 1630 lb/d | 74% |
| July 2026 | 008 | Oxygen demand, chem. [high level] [COD], daily maximum | 480 mg/L | ≤ 200 mg/L | 140% |
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| Temperature, water deg. fahrenheit | daily maximum | ≤ 115 deg F | all year | 001 |
| BOD, 5-day, 20 deg. C | daily average | ≤ 25 mg/L | all year | 001 |
| BOD, 5-day, 20 deg. C | daily maximum | report only (mg/L) | all year | 001 |
| BOD, 5-day, 20 deg. C | daily average | ≤ 675 lb/d | all year | 001 |
| BOD, 5-day, 20 deg. C | daily maximum | ≤ 1622 lb/d | all year | 001 |
| Oxygen demand, chem. [high level] [COD] | daily average | report only (mg/L) | all year | 001 |
| Oxygen demand, chem. [high level] [COD] | daily maximum | report only (mg/L) | all year | 001 |
| Oxygen demand, chem. [high level] [COD] | daily average | ≤ 7623 lb/d | all year | 001 |
| Oxygen demand, chem. [high level] [COD] | daily maximum | ≤ 14736 lb/d | all year | 001 |
| pH | minimum | ≥ 5 SU | all year | 001 |
| pH | maximum | ≤ 11 SU | all year | 001 |
| Solids, total suspended | daily average | report only (mg/L) | all year | 001 |
| Solids, total suspended | daily maximum | report only (mg/L) | all year | 001 |
| Solids, total suspended | daily average | ≤ 1032 lb/d | all year | 001 |
| Solids, total suspended | daily maximum | ≤ 1630 lb/d | all year | 001 |
| Oil & Grease | daily average | report only (mg/L) | all year | 001 |
| Oil & Grease | daily maximum | report only (mg/L) | all year | 001 |
| Oil & Grease | daily average | ≤ 400 lb/d | all year | 001 |
| Oil & Grease | daily maximum | ≤ 600 lb/d | all year | 001 |
| Nitrogen, ammonia total [as N] | daily average | ≤ 9 mg/L | all year | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | report only (mg/L) | all year | 001 |
| Nitrogen, ammonia total [as N] | daily average | ≤ 243 lb/d | all year | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 405 lb/d | all year | 001 |
| Sulfide, total [as S] | daily average | ≤ 6.4 lb/d | all year | 001 |
| Sulfide, total [as S] | daily maximum | ≤ 14.2 lb/d | all year | 001 |
| Fluoride, total [as F] | daily average | report only (mg/L) | all year | 001 |
| Fluoride, total [as F] | daily maximum | report only (mg/L) | all year | 001 |
| Chromium, hexavalent [as Cr] | daily average | ≤ 6.03 lb/d | all year | 001 |
| Chromium, hexavalent [as Cr] | daily maximum | ≤ 12.3 lb/d | all year | 001 |
| Chromium, total [as Cr] | daily average | ≤ 12.5 lb/d | all year | 001 |
| Chromium, total [as Cr] | daily maximum | ≤ 35.4 lb/d | all year | 001 |
| Flow, in conduit or thru treatment plant | daily average | ≤ 6.9 MGD | all year | 001 |
| Flow, in conduit or thru treatment plant | daily maximum | ≤ 8.3 MGD | all year | 001 |
| Phenolic compounds, total | daily average | ≤ 8.3 lb/d | all year | 001 |
| Phenolic compounds, total | daily maximum | ≤ 17.2 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 |
| Oxygen demand, chem. [high level] [COD] | daily maximum | ≤ 150 mg/L | all year | 004 |
| pH | minimum | ≥ 6 SU | all year | 004 |
| pH | maximum | ≤ 9 SU | all year | 004 |
| Oil & Grease | daily maximum | ≤ 15 mg/L | all year | 004 |
| Copper, total [as Cu] | daily maximum | ≤ .0152 mg/L | all year | 004 |
| Flow, in conduit or thru treatment plant | daily average | report only (MGD) | all year | 004 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 004 |
| Oxygen demand, chem. [high level] [COD] | daily maximum | ≤ 200 mg/L | all year | 005 |
| pH | minimum | ≥ 6 SU | all year | 005 |
| pH | maximum | ≤ 9 SU | all year | 005 |
| Oil & Grease | daily maximum | ≤ 15 mg/L | all year | 005 |
| Flow, in conduit or thru treatment plant | daily average | report only (MGD) | all year | 005 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 005 |
| Oxygen demand, chem. [high level] [COD] | daily maximum | ≤ 200 mg/L | all year | 008 |
| pH | minimum | ≥ 6 SU | all year | 008 |
| pH | maximum | ≤ 9 SU | all year | 008 |
| Oil & Grease | daily maximum | ≤ 15 mg/L | all year | 008 |
| Flow, in conduit or thru treatment plant | daily average | report only (MGD) | all year | 008 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 008 |
| Oxygen demand, chem. [high level] [COD] | daily maximum | ≤ 200 mg/L | all year | 011 |
| pH | minimum | ≥ 6 SU | all year | 011 |
| pH | maximum | ≤ 9 SU | all year | 011 |
| Oil & Grease | daily maximum | ≤ 15 mg/L | all year | 011 |
| Flow, in conduit or thru treatment plant | daily average | report only (MGD) | all year | 011 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 011 |
| Temperature, water deg. fahrenheit | daily maximum | ≤ 115 deg F | all year | 012 |
| Oxygen, dissolved [DO] | monthly minimum | ≥ 4 mg/L | all year | 012 |
| BOD, 5-day, 20 deg. C | daily average | ≤ 25 mg/L | all year | 012 |
| BOD, 5-day, 20 deg. C | daily maximum | report only (mg/L) | all year | 012 |
| BOD, 5-day, 20 deg. C | daily average | ≤ 675 lb/d | all year | 012 |
| BOD, 5-day, 20 deg. C | daily maximum | ≤ 1622 lb/d | all year | 012 |
| Oxygen demand, chem. [high level] [COD] | daily average | report only (mg/L) | all year | 012 |
| Oxygen demand, chem. [high level] [COD] | daily maximum | report only (mg/L) | all year | 012 |
| Oxygen demand, chem. [high level] [COD] | daily average | ≤ 7623 lb/d | all year | 012 |
| Oxygen demand, chem. [high level] [COD] | daily maximum | ≤ 14736 lb/d | all year | 012 |
| pH | minimum | ≥ 5 SU | all year | 012 |
| pH | maximum | ≤ 11 SU | all year | 012 |
| Solids, total suspended | daily average | report only (mg/L) | all year | 012 |
| Solids, total suspended | daily maximum | report only (mg/L) | all year | 012 |
| Solids, total suspended | daily average | ≤ 1032 lb/d | all year | 012 |
| Solids, total suspended | daily maximum | ≤ 1630 lb/d | all year | 012 |
| Oil & Grease | daily average | report only (mg/L) | all year | 012 |
| Oil & Grease | daily maximum | report only (mg/L) | all year | 012 |
| Oil & Grease | daily average | ≤ 400 lb/d | all year | 012 |
| Oil & Grease | daily maximum | ≤ 600 lb/d | all year | 012 |
| Nitrogen, ammonia total [as N] | daily average | ≤ 9 mg/L | all year | 012 |
| Nitrogen, ammonia total [as N] | daily maximum | report only (mg/L) | all year | 012 |
| Nitrogen, ammonia total [as N] | daily average | ≤ 243 lb/d | all year | 012 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 405 lb/d | all year | 012 |
| Cyanide, free [amenable to chlorination] | daily average | report only (mg/L) | all year | 012 |
| Cyanide, free [amenable to chlorination] | daily maximum | report only (mg/L) | all year | 012 |
| Cyanide, free [amenable to chlorination] | daily average | ≤ .151 lb/d | all year | 012 |
| Cyanide, free [amenable to chlorination] | daily maximum | ≤ .351 lb/d | all year | 012 |
| Sulfide, total [as S] | daily average | ≤ 6.4 lb/d | all year | 012 |
| Sulfide, total [as S] | daily maximum | ≤ 14.2 lb/d | all year | 012 |
| Fluoride, total [as F] | daily average | report only (mg/L) | all year | 012 |
| Fluoride, total [as F] | daily maximum | report only (mg/L) | all year | 012 |
| Chromium, hexavalent [as Cr] | daily average | ≤ .661 lb/d | all year | 012 |
| Chromium, hexavalent [as Cr] | daily maximum | ≤ 1.4 lb/d | all year | 012 |
| Chromium, total [as Cr] | daily average | ≤ 12.5 lb/d | all year | 012 |
| Chromium, total [as Cr] | daily maximum | ≤ 35.4 lb/d | all year | 012 |
| Copper, total [as Cu] | daily average | report only (mg/L) | all year | 012 |
| Copper, total [as Cu] | daily maximum | report only (mg/L) | all year | 012 |
| Copper, total [as Cu] | daily average | ≤ .254 lb/d | all year | 012 |
| Copper, total [as Cu] | daily maximum | ≤ .357 lb/d | all year | 012 |
| Flow, in conduit or thru treatment plant | daily average | ≤ 6.9 MGD | all year | 012 |
| Flow, in conduit or thru treatment plant | daily maximum | ≤ 8.3 MGD | all year | 012 |
| Phenolic compounds, total | daily average | ≤ 8.3 lb/d | all year | 012 |
| Phenolic compounds, total | daily maximum | ≤ 17.2 lb/d | all year | 012 |
| pH range excursions, > 60 minutes | monthly total | ≤ 0 occur/mo | all year | 012 |
| pH range excursions, monthly total accum | monthly total | ≤ 446 min | all year | 012 |
| BOD, 5-day, 20 deg. C | daily average | ≤ 675 lb/d | all year | SUM |
| BOD, 5-day, 20 deg. C | daily maximum | ≤ 1622 lb/d | all year | SUM |
| Oxygen demand, chem. [high level] [COD] | daily average | ≤ 7623 lb/d | all year | SUM |
| Oxygen demand, chem. [high level] [COD] | daily maximum | ≤ 14736 lb/d | all year | SUM |
| Solids, total suspended | daily average | ≤ 1032 lb/d | all year | SUM |
| Solids, total suspended | daily maximum | ≤ 1630 lb/d | all year | SUM |
| Oil & Grease | daily average | ≤ 400 lb/d | all year | SUM |
| Oil & Grease | daily maximum | ≤ 600 lb/d | all year | SUM |
| Nitrogen, ammonia total [as N] | daily average | ≤ 243 lb/d | all year | SUM |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 405 lb/d | all year | SUM |
| Flow, in conduit or thru treatment plant | daily average | ≤ 6.9 MGD | all year | SUM |
| Flow, in conduit or thru treatment plant | daily maximum | ≤ 8.3 MGD | all year | SUM |
| Whole effluent toxicity | 7-day minimum | ≥ 8 % | all year | TX1 |
| Whole effluent toxicity | monthly average minimum | ≥ 8 % | all year | TX1 |
| Whole effluent toxicity | 7-day minimum | ≥ 8 % | all year | TX1 |
| Whole effluent toxicity | monthly average minimum | ≥ 8 % | all year | TX1 |
| 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 menidia | 7-day minimum | report only (pass=0;fail=1) | all year | TX1 |
| Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Menidia menidia | 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 menidia | 7-day minimum | report only (%) | all year | TX1 |
| NOEC Lethal Static Renewal 7 Day Chronic Menidia menidia | 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 menidia | 7-day minimum | report only (%) | all year | TX1 |
| NOEC Sub-Lethal Static Renewal 7 Day Chronic Menidia menidia | 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 menidia | 7-day minimum | report only (pass=0;fail=1) | all year | TX1 |
| Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Menidia menidia | 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 menidia | 7-day minimum | report only (%) | all year | TX1 |
| LOEC Lethal Survival Static Renewal 7 Day Chronic Menidia menidia | 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 Reproduction Static Renewal 7 Day Chronic Menidia menidia | 7-day minimum | report only (%) | all year | TX1 |
| LOEC Sub-Lethal Reproduction Static Renewal 7 Day Chronic Menidia menidia | monthly average minimum | report only (%) | all year | TX1 |
| Whole effluent toxicity | 7-day minimum | ≥ 83 % | all year | TX12 |
| Whole effluent toxicity | monthly average minimum | ≥ 83 % | all year | TX12 |
| Whole effluent toxicity | 7-day minimum | ≥ 83 % | all year | TX12 |
| Whole effluent toxicity | monthly average minimum | ≥ 83 % | all year | TX12 |
| Whole effluent toxicity - retest #1 | 7-day minimum | report only (pass=0;fail=1) | all year | TX12 |
| Whole effluent toxicity - retest #1 | monthly average minimum | report only (pass=0;fail=1) | all year | TX12 |
| Whole effluent toxicity - retest #2 | 7-day minimum | report only (pass=0;fail=1) | all year | TX12 |
| Whole effluent toxicity - retest #2 | monthly average minimum | report only (pass=0;fail=1) | all year | TX12 |
| 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 | TX12 |
| 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 | TX12 |
| Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Menidia menidia | 7-day minimum | report only (pass=0;fail=1) | all year | TX12 |
| Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Menidia menidia | monthly average minimum | report only (pass=0;fail=1) | all year | TX12 |
| NOEC Lethal Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia) | 7-day minimum | report only (%) | all year | TX12 |
| NOEC Lethal Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia) | monthly average minimum | report only (%) | all year | TX12 |
| NOEC Lethal Static Renewal 7 Day Chronic Menidia menidia | 7-day minimum | report only (%) | all year | TX12 |
| NOEC Lethal Static Renewal 7 Day Chronic Menidia menidia | monthly average minimum | report only (%) | all year | TX12 |
| NOEC Sub-Lethal Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia) | 7-day minimum | report only (%) | all year | TX12 |
| NOEC Sub-Lethal Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia) | monthly average minimum | report only (%) | all year | TX12 |
| NOEC Sub-Lethal Static Renewal 7 Day Chronic Menidia menidia | 7-day minimum | report only (%) | all year | TX12 |
| NOEC Sub-Lethal Static Renewal 7 Day Chronic Menidia menidia | monthly average minimum | report only (%) | all year | TX12 |
| 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 | TX12 |
| 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 | TX12 |
| Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Menidia menidia | 7-day minimum | report only (pass=0;fail=1) | all year | TX12 |
| Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Menidia menidia | monthly average minimum | report only (pass=0;fail=1) | all year | TX12 |
| LOEC Lethal Survival Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia) | 7-day minimum | report only (%) | all year | TX12 |
| LOEC Lethal Survival Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia) | monthly average minimum | report only (%) | all year | TX12 |
| LOEC Lethal Survival Static Renewal 7 Day Chronic Menidia menidia | 7-day minimum | report only (%) | all year | TX12 |
| LOEC Lethal Survival Static Renewal 7 Day Chronic Menidia menidia | monthly average minimum | report only (%) | all year | TX12 |
| LOEC Sub-Lethal Reproduction Static Renewal 7 Day Chronic Americamysis bahia (Mysidopsis bahia) | 7-day minimum | report only (%) | all year | TX12 |
| LOEC Sub-Lethal Reproduction Static Renewal 7 Day Chronic Americamysis bahia (Mysidopsis bahia) | monthly average minimum | report only (%) | all year | TX12 |
| LOEC Sub-Lethal Reproduction Static Renewal 7 Day Chronic Menidia menidia | 7-day minimum | report only (%) | all year | TX12 |
| LOEC Sub-Lethal Reproduction Static Renewal 7 Day Chronic Menidia menidia | monthly average minimum | report only (%) | all year | TX12 |
| 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 menidia | 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 | TXL |
| Whole effluent toxicity - retest #2 | single sample | report only (pass=0;fail=1) | all year | TXL |
| LC50 Pass/Fail Static 24Hr Acute Americamysis bahia (formerly Mysidopsis bahia) | single sample | report only (pass=0;fail=1) | all year | TXL |
| LC50 Pass/Fail Static 24Hr Acute Menidia menidia | single sample | report only (pass=0;fail=1) | all year | TXL |
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/TX0006289 · MCP: https://passage-data.com/mcp