Clean Water Act discharge permit · NPDES TX0006599
FLINT HILLS RESOURCES CORPUS CHRISTI EAST REFINERY, Corpus Christi, TX: NPDES TX0006599 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MajorDischarger class
- 39Pollutants under a numeric limit
- 6Pollutants with an effluent exceedance
- 1Inspections on file
- 0Formal enforcement actions
FLINT HILLS RESOURCES CORPUS CHRISTI EAST REFINERY, held by FLINT HILLS RESOURCES CORPUS CHRISTI, LLC, holds NPDES permit TX0006599, which discharges to Directly Corpus Christi Inner Harbor. EPA’s file records it issued October 20, 2015 and expiring June 1, 2020. The status and dates are as EPA’s permit file stood when Velarion loaded it (October 14, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.
Identity
| Facility as filed | FLINT HILLS RESOURCES CORPUS CHRISTI EAST REFINERY |
|---|---|
| Permittee as filed | FLINT HILLS RESOURCES CORPUS CHRISTI, LLC |
| NPDES ID | TX0006599 |
| 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 | October 20, 2015 |
| Expiration date | June 1, 2020 |
| Address | Corpus Christi, TX 78407 |
| Receiving water | DIRECTLY CORPUS CHRISTI INNER HARBOR |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Tule Lake (HUC 121102020107) |
| SIC | 2911 – Petroleum Refining |
| Other EPA IDs (FRS) | RCRA handler TXD066447376; ICIS-AIR source TX0000004835500020 |
Cited to the EPA ICIS-NPDES permit file (ECHO download) and EPA’s NAICS/SIC and component files, the same download; cross-program IDs from EPA’s FRS facility-registry crosswalk.
Effluent limits and exceedances
- 41Pollutants on file
- 39Under a numeric limit
- 13With a violation of any kind
- 6With 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 |
|---|---|---|---|---|---|
| Enterococci | 2 | 6 | 4 | December 31, 2014 | 66% over the limit |
| Oxygen demand, chem. [high level] [COD] | 8 | 24 | 3 | October 31, 2018 | 127% over the limit |
| Sulfide, total [as S] | 2 | 11 | 3 | October 31, 2024 | 80% over the limit |
| BOD, 5-day, 20 deg. C | 2 | 18 | 2 | October 31, 2010 | 160% over the limit |
| pH | 14 | 11 | 2 | April 30, 2004 | |
| Oil & Grease | 8 | 8 | 2 | June 30, 2006 | 99,999% over the limit |
| Flow, in conduit or thru treatment plant | 14 | 28 | 0 | ||
| Solids, total suspended | 2 | 16 | 0 | ||
| Nitrogen, ammonia total [as N] | 2 | 16 | 0 | ||
| Phenolic compounds, total | 0 | 5 | 0 | ||
| pH range excursions, > 60 minutes | 1 | 3 | 0 | ||
| pH range excursions, monthly total accum | 1 | 3 | 0 | ||
| Coliform, fecal general | 0 | 2 | 0 | ||
| Whole effluent toxicity - retest #1 | 5 | 0 | 0 | ||
| Whole effluent toxicity - retest #2 | 5 | 0 | 0 | ||
| Temperature, water deg. fahrenheit | 2 | 0 | 0 | ||
| Cyanide, free [amenable to chlorination] | 2 | 0 | 0 | ||
| Chromium, hexavalent [as Cr] | 2 | 0 | 0 | ||
| Chromium, total [as Cr] | 2 | 0 | 0 | ||
| Phenols | 2 | 0 | 0 | ||
| LF Pass/Fail Static Renewal 48Hr Acute Americamysis bahia (formerly Mysidopis bahia) | 2 | 0 | 0 | ||
| Low Flow Pass/Fail Static Renewal 48Hr Acute Menidia menidia | 2 | 0 | 0 | ||
| Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Americamysis bahia (Mysidopsis bahia) | 2 | 0 | 0 | ||
| Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Menidia menidia | 2 | 0 | 0 | ||
| NOAEC Lethal Static Renewal 48HR Acute Americamysis bahia (formerly Mysidopsis bahia) | 2 | 0 | 0 | ||
| NOAEC Lethal Static Renewal 48HR Acute Menidia menidia | 2 | 0 | 0 | ||
| NOEC Lethal Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia) | 2 | 0 | 0 | ||
| NOEC Lethal Static Renewal 7 Day Chronic Menidia menidia | 2 | 0 | 0 | ||
| NOEC Sub-Lethal Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia) | 2 | 0 | 0 | ||
| NOEC Sub-Lethal Static Renewal 7 Day Chronic Menidia menidia | 2 | 0 | 0 | ||
| Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia) | 2 | 0 | 0 | ||
| Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Menidia menidia | 2 | 0 | 0 | ||
| LOAEC Lethal Survival Static Renewal 48Hr Acute Americamysis bahia (formerly Mysidopsis bahia) | 2 | 0 | 0 | ||
| LOAEC Survival Static Renewal 48HR Acute Menidia menidia | 2 | 0 | 0 | ||
| LOEC Lethal Survival Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia) | 2 | 0 | 0 | ||
| LOEC Lethal Survival Static Renewal 7 Day Chronic Menidia menidia | 2 | 0 | 0 | ||
| LOEC Sub-Lethal Reproduction Static Renewal 7 Day Chronic Americamysis bahia (Mysidopsis bahia) | 2 | 0 | 0 | ||
| LOEC Sub-Lethal Reproduction Static Renewal 7 Day Chronic Menidia menidia | 2 | 0 | 0 | ||
| Zinc, total [as Zn] | 1 | 0 | 0 | ||
| LC50 Pass/Fail Static 24Hr Acute Americamysis bahia (formerly Mysidopsis bahia) | 1 | 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
- 3Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| June 25, 2024 | Permit Violations - Violation Specified in Comment | ST6 |
| May 18, 2022 | Permit Violations - Violation Specified in Comment | ST6 |
| March 15, 2018 | Permit Violations - Violation Specified in Comment | ST6 |
Inspections
| Date | What EPA recorded | Agency |
|---|---|---|
| February 3, 2026 | Evaluation | S |
Formal enforcement and penalties
0 formal actions, 0 of them with a penalty assessed. Federal and state penalties are separate figures from separate authorities and are shown as each was filed, never added together.
Informal enforcement
| Date | What EPA recorded | Agency |
|---|---|---|
| May 5, 2026 | Phone Call/ EMAIL | State |
Cited to the EPA ICIS-NPDES violation, inspection and enforcement files (ECHO download); up to 50 rows of each shown, newest first.
Watch this permit
One permit holder, $99/month. Watch the register for one permit holder and the places and receiving waters tied to its permits. Choose “One permit holder” and enter this permit’s NPDES ID, TX0006599.
Start the watch
- One permit holder — $99/month
- One watershed — $2,990/year
- One state — $4,990/year
- The whole register — $18,000/year
How we handle your data → Privacy
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 TX0006599 there.
Nearby on the register
- Discharge permits in Corpus Christi
- Every permit record in Corpus Christi, A to Z
- Discharge permits in Texas
- Every permit record in Texas, A to Z
Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.