Clean Water Act discharge permit · NPDES TX0096474
POTAC FACILITY, Corpus Christi, TX: NPDES TX0096474 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 17Pollutants under a numeric limit
- 3Pollutants with an effluent exceedance
POTAC FACILITY, held by POTAC, LLC, holds NPDES permit TX0096474, which discharges to Valero Stormwater Culvert, Underground Pipe. EPA’s file records it issued August 29, 2016 and expiring June 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 | POTAC FACILITY |
|---|---|
| Permittee as filed | POTAC, LLC |
| NPDES ID | TX0096474 |
| Permit status | Administratively continued (past its expiration date and still in force until reissued) |
| Permit type | Individual permit |
| Discharger class | Minor discharger |
| Facility type | Not a publicly owned treatment works |
| Issued | August 29, 2016 |
| Expiration date | June 1, 2020 |
| Address | Corpus Christi, TX 78409 |
| Receiving water | VALERO STORMWATER CULVERT, UNDERGROUND PIPE |
| Other EPA IDs (FRS) | RCRA handler TXD980877757; ICIS-AIR source TX0000004835500114 |
Cited to the EPA ICIS-NPDES permit file (ECHO download); cross-program IDs from EPA’s FRS facility-registry crosswalk.
Effluent limits and exceedances
- 17Pollutants on file
- 17Under a numeric limit
- 15With a violation of any kind
- 3With 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 |
|---|---|---|---|---|---|
| Zinc, total [as Zn] | 4 | 101 | 33 | December 31, 2024 | 250% over the limit |
| pH | 6 | 99 | 8 | January 31, 2025 | |
| Sulfide, total [as S] | 2 | 32 | 4 | October 31, 2025 | 196% over the limit |
| Flow, in conduit or thru treatment plant | 4 | 60 | 0 | ||
| Oil & Grease | 4 | 58 | 0 | ||
| Oxygen demand, chem. [high level] [COD] | 4 | 56 | 0 | ||
| Chromium, hexavalent [as Cr] | 2 | 36 | 0 | ||
| Chromium, total [as Cr] | 2 | 34 | 0 | ||
| BOD, 5-day, 20 deg. C | 2 | 28 | 0 | ||
| Solids, total suspended | 2 | 28 | 0 | ||
| Nitrogen, ammonia total [as N] | 2 | 28 | 0 | ||
| Phenolic compounds, total | 2 | 28 | 0 | ||
| LC50 Pass/Fail Static 24Hr Acute Americamysis bahia (formerly Mysidopsis bahia) | 1 | 4 | 0 | ||
| LC50 Pass/Fail Static 24Hr Acute Menidia menidia | 1 | 4 | 0 | ||
| Whole effluent toxicity | 1 | 3 | 0 | ||
| Whole effluent toxicity - retest #1 | 1 | 0 | 0 | ||
| Whole effluent toxicity - retest #2 | 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
- 1Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| April 24, 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.
Watch this permit
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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 TX0096474 there.
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Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.