EPA · discharge permits by pollutant and parameter
Drilling fluid, end of well, 96-hr LC50
- 269Permits carrying a limit
- 4With a recorded exceedance
- 3States
EPA identifies this parameter by code 04311. A permit listed here carries a numeric limit on drilling fluid, end of well, 96-hr lc50 in its discharge; an exceedance is a monitoring result above that limit, as reported to EPA.
By state
By watershed
The subbasins of the national Watershed Boundary Dataset carrying the most permits with a limit on drilling fluid, end of well, 96-hr lc50.
- Subbasin 1204010489
- Subbasin 0809020312
- Subbasin 0808010310
- Subbasin 120401026
- Subbasin 080902014
- Subbasin 111101014
- Subbasin 120301054
- Subbasin 120301033
Other pollutants
- PCB, total, scan effluent 16
- Phosphate, ortho [as P] 441
- Total residual ooxidant-discharge time 21
- Misc. free oil in Western GOM, OCS 203
- Acetochlor 4
- Produced water, Radium 226, total 10
- Produced water, Radium 228, total 10
- Clamtrol CT-1, Total Water 5
- Chromium, trivalent total recoverable 291
- Seafood production, effluent # day/mo 69
- Drilling fluid, toxicity 284
- Drill cuttings, end of well, 96-hr LC50 6
- Drill cuttings, toxicity 6
- Sanitary Waste Inspection 15
- Sea Floor Visual Remote 4
- Small Volume with Cuttings 4
- Sanitary Waste Inspection Conducted 15
- Well fluids, oil & grease 215
- Diquat 65
- Organics, gasoline range 45
Permits
| Permit holder | NPDES ID | City | State | Program | Discharger | Receiving water |
|---|---|---|---|---|---|---|
| PETROQUEST ENERGY, LLC | GMG290174 | LAFAYETTE | LA | Minor | ||
| ROOSTER PETROLEUM, LLC | GMG290331 | HOUSTON | TX | Minor | Spring Branch-Buffalo Bayou | |
| HOACTZIN PARTNERS, L.P. | GMG290540 | FERNANDINA BEACH | FL | Minor | ||
| EL PASO PRODUCTION OIL&GAS CO. | GMG290015 | HOUSTON | TX | Minor | GULF OF MEXICO | |
| BENNU OIL & GAS, LLC | GMG290546 | HOUSTON | TX | Minor | City of Houston-Buffalo Bayou | |
| TEXACO EXPLORATION AND PROD. | GMG290133 | NEW ORLEANS | LA | Minor | GULF OF MEXICO | |
| WEATHERFORD PIPE. & SPEC SERV | GMG290367 | HOUSTON | TX | Minor | City of Houston-Buffalo Bayou | |
| HALL-HOUSTON EXPLORATION IV, LP | GMG290399 | HOUSTON | TX | Minor | City of Houston-Buffalo Bayou | |
| PETRO VENTURES, INC. | GMG290215 | LAFAYETTE | LA | Minor | Anselm Coulee-Vermilion River | |
| ANATEXAS OFFSHORE, INC. | GMG290284 | SPRING | TX | Minor | Spring Branch-Buffalo Bayou | |
| CASTEX OFFSHORE, INC | GMG290354 | HOUSTON | TX | Minor | Vince Bayou-Buffalo Bayou | |
| ENERGY XXI GOM, L.L.C. | GMG290329 | HOUSTON | TX | Minor | ||
| HALL-HOUSTON EXPLORATION II, LP | GMG290335 | HOUSTON | TX | Minor | City of Houston-Buffalo Bayou | |
| NOBLE ENERGY, INC. | GMG290096 | HOUSTON | TX | Minor | GULF OF MEXICO | |
| PROBE RESOURCES US LTD | GMG290362 | METAIRIE | LA | Minor | Metairie Canal-Canal No 2 | |
| FIELDWOOD ENERGY, LLC VK 340 A | GEG460578 | GULF OF MEXICO | GE | Minor | GULF OF MEXICO | |
| JEFFERSON BLOCK 24 OIL&GAS LLC | GMG290336 | HOUSTON | TX | Minor | ||
| ANKOR MO 870 PLT A | GEG460457 | GULF OF MEXICO | GE | Minor | GULF OF MEXICO | |
| MARATHON OIL COMPANY | GMG290061 | HOUSTON | TX | Minor | GULF OF MEXICO | |
| FAIRWAYS OFFSHORE EXPLORATION, INC. | GMG290166 | HOUSTON | TX | Minor | Cole Creek-Whiteoak Bayou | |
| DOMINION PRODUCTION COMPANY, LLC | GMG290389 | LAFAYETTE | LA | Minor | Anselm Coulee-Vermilion River | |
| STERLING ENERGY, INC. | GMG290291 | HOUSTON | TX | Minor | Vince Bayou-Buffalo Bayou | |
| FIELDWOOD ENERGY, LLC VK 251 4 | GEG460724 | GULF OF MEXICO | GE | Minor | GULF OF MEXICO | |
| FIELDWOOD ENERGY, LLC VK 251 3 | GEG460723 | GULF OF MEXICO | GE | Minor | GULF OF MEXICO | |
| NORTHSTAR OFFSHORE ENERGY PARTNERS, LLC | GMG290377 | HOUSTON | TX | Minor | Country Club Bayou-Brays Bayou | |
| FIELDWOOD ENERGY, LLC VK251 A | GEG460479 | GULF OF MEXICO | GE | Minor | GULF OF MEXICO | |
| HALL-HOUSTON EXPLORATION III, LP | GMG290358 | HOUSTON | TX | Minor | City of Houston-Buffalo Bayou | |
| TRI-UNION DEVELOPMENT CORP. | GMG290039 | HOUSTON | TX | Minor | GULF OF MEXICO | |
| TARPON OPER. & DEVELOP. LLC | GMG290243 | HOUSTON | TX | Minor | Vince Bayou-Buffalo Bayou | |
| MURPHY EXPLORATION & PRODUCTION - DESOTO CANYON 90 001 | GEG462026 | GULF OF MEXICO | GE | Minor | ||
| FIELDWOOD ENERGY VK 69 FACILITY A | GEG460925 | GULF OF MEXICO | GE | Minor | GULF OF MEXICO | |
| SABRE OIL AND GAS EXPLORATION PROJECT | AK0053690 | ANCHORAGE | AK | Minor | COOK INLET, TRADING BAY | |
| GULF ENERGY EXPLORATION CORPORATION | GMG290374 | AUSTIN | TX | Minor | Lake Austin-Town Lake | |
| DISCOVERY PRODUCER SERVICES, LLC | GMG290384 | HOUSTON | TX | Minor | ||
| LINDER OIL COMPANY | GMG290059 | COVINGTON | LA | Minor | GULF OF MEXICO | |
| EPL OIL & GAS, INC. | GMG290208 | NEW ORLEANS | LA | Minor | Metairie Canal-Canal No 2 | |
| COASTLAND OPERATIONS, LLC | GMG290386 | DALLAS | TX | Minor | Farmers Branch-Elm Fork Trinity River | |
| NAVITAS PETROLEUM US, LLC | GMG290606 | HOUSTON | TX | Minor | City of Houston-Buffalo Bayou | |
| TEXAS STANDARD OIL OPERATING COMPANY | GMG290379 | BELLAIRE | TX | Minor | Country Club Bayou-Brays Bayou | |
| GREAT BAY OPERATIONS, LLC | GMG290385 | PORTSMOUTH | NH | Minor | Portsmouth Harbor |
What this page shows
This page covers Clean Water Act discharge permits with limits on the pollutant parameter Drilling fluid, end of well, 96-hr LC50. It lists 269 permits with a limit on this parameter and 52 permits with a recorded violation of this parameter.