NPDES TX0100935 · Clean Water Act
GREENS BAYOU FABRICATION YARD, Harris County, TX: NPDES TX0100935 discharge permit, effluent exceedances, inspections, penalties
GREENS BAYOU FABRICATION YARD, Harris County, Texas: Individual permit TX0100935, held by UNDINE TEXAS ENVIRONMENATL LLC; Administratively continued; issued September 6, 2018, term to September 6, 2023; discharges to GREENS BAYOU PORTION OF HOUSTON SHIP CHANNEL TIDAL.
1 of the 15 pollutants listed for NPDES TX0100935 have no violation or effluent exceedance.
- Nitrogen, ammonia total [as N]: 4 limits, 61 violations of any kind, 49 effluent exceedances, latest January 31, 2026, largest 287% over the limit.
- Enterococci: 2 limits, 36 violations of any kind, 34 effluent exceedances, latest January 31, 2026, largest 99,999% over the limit.
- Solids, total suspended: 2 limits, 27 violations of any kind, 19 effluent exceedances, latest January 31, 2025, largest 80% over the limit.
- Copper, total [as Cu]: 2 limits, 27 violations of any kind, 17 effluent exceedances, latest April 30, 2019, largest 375% over the limit.
- Silver, total [as Ag]: 2 limits, 43 violations of any kind, 11 effluent exceedances, latest December 31, 2020, largest 104% over the limit.
- Zinc, total [as Zn]: 3 limits, 6 violations of any kind, 6 effluent exceedances, latest April 30, 2025, largest 555% over the limit.
- Flow, in conduit or thru treatment plant: 2 limits, 13 violations of any kind, 5 effluent exceedances, latest August 31, 2019, largest 56% over the limit.
- pH: 2 limits, 12 violations of any kind, 4 effluent exceedances, latest December 31, 2023.
- Oil & Grease: 1 limit, 8 violations of any kind, 4 effluent exceedances, latest March 31, 2025, largest 156% over the limit.
- Chlorine, total residual: 2 limits, 14 violations of any kind.
- BOD, carbonaceous [5 day, 20 C]: 0 limits, 12 violations of any kind.
- Nitrogen, Kjeldahl, total [as N]: 2 limits, 10 violations of any kind.
- Oxygen demand, chem. [high level] [COD]: 1 limit, 6 violations of any kind.
- Oxygen, dissolved [DO]: 1 limit, 4 violations of any kind.
- BOD, 5-day, 20 deg. C: 2 limits.
- April 3, 2024: Permit Violations - Violation Specified in Comment (ST6).
GREENS BAYOU FABRICATION YARD among its neighbors
97 discharge permits are in the Lower Greens Bayou subwatershed (HUC 120401040606); TX0100935 is one. Its county: 4,455, 195 major; TX0100935 is minor permit.
Other permits in the Lower Greens Bayou subwatershed (HUC 120401040606)
- AMERICAN WINDOW MANUFACTURING, Houston: TXRNECB29, minor, term to 2026-08-13
- ARKEMA HOUSTON CHEMICAL PLANT, Houston: TX0007064, major, term to 2023-11-07
- AZTEC 6 PACK ASPHALT PLANT, Houston: TXR05M583, minor, term to 2026-08-13
- BEST AMERICAN FACILITY, Houston: TX0103578, minor, term to 2023-07-12
- BLENPAC SERVICES, LLC, Houston: TXR05T211
- BOLTEX MANUFACTURING, Houston: TXR05FC24, minor, term to 2026-08-13
- BRENNTAG SOUTHWEST HOUSTON, Houston: TX0116076, minor, term to 2024-01-18
- CANDO CHANNELVIEW TERMINAL, Houston: TXR05HA12, minor, term to 2026-08-13
- CE KING HIGH SCHOOL 9TH AND 10TH GRADE CAMPUS, Houston: TXR1559RP, minor, term to 2028-03-04
- CE KING HIGH SCHOOL TO MIDDLE SCHOOL CONVERSION, Houston: TXR1537CH, minor, term to 2023-03-04
Identity
| Facility | GREENS BAYOU FABRICATION YARD |
|---|---|
| Permittee | UNDINE TEXAS ENVIRONMENATL LLC |
| NPDES ID | TX0100935 |
| Status | Administratively continued |
| Type | Individual permit |
| Class | Minor |
| Facility type | Non-POTW |
| Issued | September 6, 2018 |
| Expires | September 6, 2023 |
| Address | Harris County, TX 77015 |
| Receiving water | GREENS BAYOU PORTION OF HOUSTON SHIP CHANNEL TIDAL |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Lower Greens Bayou (HUC 120401040606) |
| SIC | 3731 – Ship Building And Repairing |
| Other EPA IDs (FRS) | RCRA handler TXD000803031; ICIS-AIR source TX0000004820100198 |
NPDES TX0100935: effluent limits and exceedances
GREENS BAYOU FABRICATION YARD (NPDES TX0100935): 15 pollutants on file, 14 limited; 14 with a violation of any kind, 9 with an exceedance.
| Pollutant | Limits | Violations | Exceedances | Latest | Largest, as filed |
|---|---|---|---|---|---|
| Nitrogen, ammonia total [as N] | 4 | 61 | 49 | January 31, 2026 | 287% over the limit |
| Enterococci | 2 | 36 | 34 | January 31, 2026 | 99,999% over the limit |
| Solids, total suspended | 2 | 27 | 19 | January 31, 2025 | 80% over the limit |
| Copper, total [as Cu] | 2 | 27 | 17 | April 30, 2019 | 375% over the limit |
| Silver, total [as Ag] | 2 | 43 | 11 | December 31, 2020 | 104% over the limit |
| Zinc, total [as Zn] | 3 | 6 | 6 | April 30, 2025 | 555% over the limit |
| Flow, in conduit or thru treatment plant | 2 | 13 | 5 | August 31, 2019 | 56% over the limit |
| pH | 2 | 12 | 4 | December 31, 2023 | |
| Oil & Grease | 1 | 8 | 4 | March 31, 2025 | 156% over the limit |
| Chlorine, total residual | 2 | 14 | 0 | ||
| BOD, carbonaceous [5 day, 20 C] | 0 | 12 | 0 | ||
| Nitrogen, Kjeldahl, total [as N] | 2 | 10 | 0 | ||
| Oxygen demand, chem. [high level] [COD] | 1 | 6 | 0 | ||
| Oxygen, dissolved [DO] | 1 | 4 | 0 | ||
| BOD, 5-day, 20 deg. C | 2 | 0 | 0 |
NPDES TX0100935: inspections, violations and enforcement
NPDES TX0100935: 1 single-event violation
| Date | What EPA recorded | Agency |
|---|---|---|
| April 3, 2024 | Permit Violations - Violation Specified in Comment | ST6 |
NPDES TX0100935 (GREENS BAYOU FABRICATION YARD): no inspection, formal enforcement action and informal enforcement action on file.
Watch NPDES TX0100935
NPDES TX0100935: one email when its EPA record changes — $99/month.
Permits near NPDES TX0100935
NPDES TX0100935: 15 pollutant rows, 1 dated events; ICIS-NPDES download, loaded October 14, 2026.