Clean Water Act discharge permit · NPDES TX0006904
VALERO REFINING CO EAST PLANT, Corpus Christi, TX: NPDES TX0006904 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MajorDischarger class
- 32Pollutants under a numeric limit
- 10Pollutants with an effluent exceedance
VALERO REFINING CO EAST PLANT, held by VALERO REFINING EAST PLANT, holds NPDES permit TX0006904, which discharges to Unnamed Drainage Ditch. EPA’s file records it issued May 21, 2015 and expiring April 1, 2020. The status and dates are as EPA’s permit file stood when Velarion loaded it (September 15, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.
Identity
| Facility as filed | VALERO REFINING CO EAST PLANT |
|---|---|
| Permittee as filed | VALERO REFINING EAST PLANT |
| NPDES ID | TX0006904 |
| Permit status | Administratively continued (past its expiration date and still in force until reissued) |
| Permit type | Individual permit |
| Discharger class | Major discharger |
| Facility type | Not a publicly owned treatment works |
| Issued | May 21, 2015 |
| Expiration date | April 1, 2020 |
| Address | Corpus Christi, TX 78469 |
| Receiving water | UNNAMED DRAINAGE DITCH |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Tule Lake (HUC 121102020107) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 36Pollutants on file
- 32Under a numeric limit
- 30With a violation of any kind
- 10With an effluent exceedance
An effluent exceedance is a discharge monitoring report value over the permit’s numeric limit (EPA’s violation code E90). A violation of any kind also counts a report not filed. Each row is EPA’s own count for that pollutant.
| Pollutant or measure | Limits | Violations, any kind | Effluent exceedances | Latest exceedance | Largest exceedance, as filed |
|---|---|---|---|---|---|
| BOD, 5-day, 20 deg. C | 3 | 22 | 9 | May 31, 2022 | 307% over the limit |
| pH | 12 | 20 | 6 | November 30, 2025 | |
| Chromium, hexavalent [as Cr] | 2 | 47 | 5 | March 31, 2024 | 674% over the limit |
| Solids, total suspended | 2 | 36 | 5 | June 30, 2024 | 24% over the limit |
| Carbon, tot organic [TOC] | 4 | 9 | 5 | May 31, 2020 | 193% over the limit |
| Oil & Grease | 6 | 35 | 3 | April 30, 2026 | 301% over the limit |
| Sulfide, total [as S] | 2 | 32 | 2 | May 31, 2023 | 231% over the limit |
| Nitrogen, ammonia total [as N] | 3 | 12 | 2 | November 30, 2019 | 50% over the limit |
| Copper, total [as Cu] | 0 | 7 | 1 | March 31, 1999 | 26% over the limit |
| pH range excursions, > 60 minutes | 2 | 2 | 1 | February 28, 2013 | 2,147,483,650% over the limit |
| Oxygen demand, chem. [high level] [COD] | 2 | 32 | 0 | ||
| Chromium, total [as Cr] | 2 | 31 | 0 | ||
| Phenolic compounds, total | 2 | 24 | 0 | ||
| Flow, in conduit or thru treatment plant | 12 | 18 | 0 | ||
| Cyanide, free [amenable to chlorination] | 0 | 10 | 0 | ||
| Phenolics, total recoverable | 0 | 9 | 0 | ||
| Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Menidia menidia | 2 | 5 | 0 | ||
| NOEC Lethal Static Renewal 7 Day Chronic Menidia menidia | 2 | 5 | 0 | ||
| NOEC Sub-Lethal Static Renewal 7 Day Chronic Menidia menidia | 2 | 5 | 0 | ||
| Temperature, water deg. fahrenheit | 1 | 5 | 0 | ||
| Flow [dry weather] | 2 | 4 | 0 | ||
| Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Americamysis bahia (Mysidopsis bahia) | 2 | 3 | 0 | ||
| NOEC Lethal Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia) | 2 | 3 | 0 | ||
| NOEC Sub-Lethal Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia) | 2 | 3 | 0 | ||
| LC50 Pass/Fail Static 24Hr Acute Americamysis bahia (formerly Mysidopsis bahia) | 1 | 3 | 0 | ||
| LC50 Pass/Fail Static 24Hr Acute Cyprinodon variegatus | 0 | 3 | 0 | ||
| Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Menidia menidia | 2 | 2 | 0 | ||
| LOEC Lethal Survival Static Renewal 7 Day Chronic Menidia menidia | 2 | 2 | 0 | ||
| LOEC Sub-Lethal Reproduction Static Renewal 7 Day Chronic Menidia menidia | 2 | 2 | 0 | ||
| pH range excursions, monthly total accum | 2 | 1 | 0 | ||
| Whole effluent toxicity - retest #1 | 3 | 0 | 0 | ||
| Whole effluent toxicity - retest #2 | 3 | 0 | 0 | ||
| Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia) | 2 | 0 | 0 | ||
| LOEC Lethal Survival Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia) | 2 | 0 | 0 | ||
| LOEC Sub-Lethal Reproduction Static Renewal 7 Day Chronic Americamysis bahia (Mysidopsis bahia) | 2 | 0 | 0 | ||
| LC50 Pass/Fail Static 24Hr Acute Menidia menidia | 1 | 0 | 0 |
Cited to the EPA ICIS-NPDES limits and effluent violations files (ECHO download); up to 60 rows shown, most exceedances first.
Inspections, violations and enforcement
- 2Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| July 17, 2025 | Permit Violations - Violation Specified in Comment | ST6 |
| February 5, 2025 | Permit Violations - Violation Specified in Comment | ST6 |
Velarion’s copy of EPA’s ICIS-NPDES files does not include the inspections, formal enforcement actions and informal enforcement actions files, so this page shows none of them. EPA’s free Detailed Facility Report on ECHO lists this permit’s inspections, enforcement actions and penalties.
Cited to the EPA ICIS-NPDES violation, inspection and enforcement files (ECHO download); up to 50 rows of each shown, newest first.
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EPA publishes a free Detailed Facility Report for every permit on ECHO: its compliance status quarter by quarter, its inspections, and its enforcement actions and penalties. EPA also sends free notices of new inspections and enforcement actions through ECHO Notify; enter NPDES ID TX0006904 there.
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Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.