EPA Air · stack tests by state and year
Air-emissions stack tests in Louisiana, 2025
- 117Stack tests
A stack test measures what a source actually emits, at the stack, against the limit in its permit. Every stack test below was recorded against a source in Louisiana during 2025; one facility can appear more than once, because this is a record of what happened rather than a list of places.
Counties in Louisiana, 2025
- Plaquemines County 23
- Caddo County 18
- St. Charles County 12
- De Soto County 8
- Beauregard County 7
- Iberville County 7
- Calcasieu County 6
- St. James County 5
- Jefferson County 4
- Ascension County 4
- Lafourche County 3
- Morehouse County 3
Louisiana, other years
Air-emissions stack tests recorded in Louisiana, 2025
| Date | Facility | Where | Kind | Agency |
|---|---|---|---|---|
| 2025-12-30 | SHINTECH LOUISIANA LLC - SHINTECH PLAQUEMINE PLANT | PLAQUEMINE, Iberville, LA | Pass | State |
| 2025-12-18 | ARQ SOLUTIONS (RED RIVER) LLC - RED RIVER PLANT | COUSHATTA, Red River, LA | Pass | State |
| 2025-12-18 | VALERO REFINING - NEW ORLEANS LLC - ST CHARLES REFINERY | NORCO, St. Charles, LA | Pass | State |
| 2025-12-16 | BAY ST ELAINE GAS JUNCTION & DEHYDRATION FACILITY | DULAC, Terrebonne, LA | Pass | State |
| 2025-12-15 | SHINTECH LOUISIANA LLC - SHINTECH PLAQUEMINE PLANT | PLAQUEMINE, Iberville, LA | Pass | State |
| 2025-12-15 | SHINTECH LOUISIANA LLC - SHINTECH PLAQUEMINE PLANT | PLAQUEMINE, Iberville, LA | Pass | State |
| 2025-12-11 | VENTURE GLOBAL PLAQUEMINES LNG LLC - PLAQUEMINES LNG TERMINAL | PORT SULPHUR, Plaquemines, LA | Pass | State |
| 2025-12-10 | CF INDUSTRIES NITROGEN LLC - DONALDSONVILLE NITROGEN COMPLEX | DONALDSONVILLE, Ascension, LA | Pass | State |
| 2025-12-10 | NEXPERA LLC - NEXPERA-BURNSIDE FACILITY | DARROW, Ascension, LA | Pass | State |
| 2025-12-10 | CHEVRON ORONITE CO LLC - OAK POINT PLANT | BELLE CHASSE, Plaquemines, LA | Pass | State |
| 2025-12-09 | CF INDUSTRIES NITROGEN LLC - DONALDSONVILLE NITROGEN COMPLEX | DONALDSONVILLE, Ascension, LA | Pass | State |
| 2025-12-05 | A WILBERTS SONS 89 #1-ALT & 89 #2 TANK BATTERY - ERWINVILLE FIELD | ERWINVILLE, West Baton Rouge, LA | Pass | State |
| 2025-12-03 | TENNESSEE GAS PIPELINE COMPANY LLC - COMPRESSOR STATION 40 500C1 | NATCHITOCHES, Natchitoches, LA | Pass | State |
| 2025-12-02 | HOLLY COMMON POINT #3 COMPRESSOR STATION | GRAND CANE, De Soto, LA | Pass | State |
| 2025-11-16 | GOLDEN PASS PIPELINE LLC - STARKS COMPRESSOR STATION | STARKS, Calcasieu, LA | Pass | State |
| 2025-11-15 | GOLDEN PASS PIPELINE LLC - STARKS COMPRESSOR STATION | STARKS, Calcasieu, LA | Pass | State |
| 2025-11-15 | GOLDEN PASS PIPELINE LLC - STARKS COMPRESSOR STATION | STARKS, Calcasieu, LA | Pass | State |
| 2025-11-15 | GOLDEN PASS PIPELINE LLC - STARKS COMPRESSOR STATION | STARKS, Calcasieu, LA | Pass | State |
| 2025-11-14 | GOLDEN PASS PIPELINE LLC - STARKS COMPRESSOR STATION | STARKS, Calcasieu, LA | Pass | State |
| 2025-11-14 | GOLDEN PASS PIPELINE LLC - STARKS COMPRESSOR STATION | STARKS, Calcasieu, LA | Pass | State |
| 2025-10-01 | LAKE WASHINGTON CENTRAL PRODUCTION PLATFORM | PORT SULPHUR, Plaquemines, LA | Pass | State |
| 2025-09-23 | VENTURE GLOBAL PLAQUEMINES LNG LLC - PLAQUEMINES LNG TERMINAL | PORT SULPHUR, Plaquemines, LA | Pass | State |
| 2025-09-22 | VENTURE GLOBAL PLAQUEMINES LNG LLC - PLAQUEMINES LNG TERMINAL | PORT SULPHUR, Plaquemines, LA | Pass | State |
| 2025-09-19 | TRUNKLINE GAS CO LLC - LONGVILLE COMPRESSOR STATION #48 | LONGVILLE, Beauregard, LA | Pass | State |
| 2025-09-18 | CONVERSE CENTRAL FACILITY | MANSFIELD, De Soto, LA | Pass | State |
| 2025-09-17 | CF INDUSTRIES NITROGEN LLC - DONALDSONVILLE NITROGEN COMPLEX | DONALDSONVILLE, Ascension, LA | Pass | State |
| 2025-09-17 | TRUNKLINE GAS CO LLC - LONGVILLE COMPRESSOR STATION #48 | LONGVILLE, Beauregard, LA | Pass | State |
| 2025-09-16 | LOUISIANA ENERGY GATEWAY LLC - TEXANA COMPRESSOR STATION | KEATCHIE, De Soto, LA | Pass | State |
| 2025-09-11 | VENTURE GLOBAL PLAQUEMINES LNG LLC - PLAQUEMINES LNG TERMINAL | PORT SULPHUR, Plaquemines, LA | Pass | State |
| 2025-08-30 | VENTURE GLOBAL PLAQUEMINES LNG LLC - PLAQUEMINES LNG TERMINAL | PORT SULPHUR, Plaquemines, LA | Pass | State |
| 2025-08-29 | VENTURE GLOBAL PLAQUEMINES LNG LLC - PLAQUEMINES LNG TERMINAL | PORT SULPHUR, Plaquemines, LA | Pass | State |
| 2025-08-28 | CHENIERE CREOLE TRAIL PIPELINE LP - GILLIS COMPRESSOR STATION | RAGLEY, Beauregard, LA | Pass | State |
| 2025-08-28 | CHENIERE CREOLE TRAIL PIPELINE LP - GILLIS COMPRESSOR STATION | RAGLEY, Beauregard, LA | Pass | State |
| 2025-08-28 | VENTURE GLOBAL PLAQUEMINES LNG LLC - PLAQUEMINES LNG TERMINAL | PORT SULPHUR, Plaquemines, LA | Pass | State |
| 2025-08-27 | VENTURE GLOBAL PLAQUEMINES LNG LLC - PLAQUEMINES LNG TERMINAL | PORT SULPHUR, Plaquemines, LA | Pass | State |
| 2025-08-22 | VENTURE GLOBAL PLAQUEMINES LNG LLC - PLAQUEMINES LNG TERMINAL | PORT SULPHUR, Plaquemines, LA | Pass | State |
| 2025-08-20 | VENTURE GLOBAL PLAQUEMINES LNG LLC - PLAQUEMINES LNG TERMINAL | PORT SULPHUR, Plaquemines, LA | Pass | State |
| 2025-08-06 | GOLDSBY 27-11-11 & 34-11-11 PAD | PLEASANT HILL, De Soto, LA | Pass | State |
| 2025-07-31 | ROBNSN 10&15-14-16 HC #1-ALT & #2 & 9&16-14-16 HC #1-ALT TANK BATTERY - BETHANY | BETHANY, Caddo, LA | Pass | State |
| 2025-07-30 | ROBNSN 10&15-14-16 HC #1-ALT & #2 & 9&16-14-16 HC #1-ALT TANK BATTERY - BETHANY | BETHANY, Caddo, LA | Pass | State |
| 2025-07-30 | ROBNSN 10&15-14-16 HC #1-ALT & #2 & 9&16-14-16 HC #1-ALT TANK BATTERY - BETHANY | BETHANY, Caddo, LA | Pass | State |
| 2025-07-30 | ROBNSN 10&15-14-16 HC #1-ALT & #2 & 9&16-14-16 HC #1-ALT TANK BATTERY - BETHANY | BETHANY, Caddo, LA | Pass | State |
| 2025-07-28 | GULF SOUTH PIPELINE CO LLC - OLLA COMPRESSOR STATION | OLLA, La Salle, LA | Pass | State |
| 2025-07-28 | GULF SOUTH PIPELINE CO LLC - OLLA COMPRESSOR STATION | OLLA, La Salle, LA | Pass | State |
| 2025-07-24 | S&P 13-16-14 PAD | SHREVEPORT, Caddo, LA | Pass | State |
| 2025-07-24 | LAF-211 LOWREY PAD | MANSFIELD, De Soto, LA | Pass | State |
| 2025-07-17 | GREEN 7&30-17-14HC #1 #2-ALT & #3-ALT TANK BATTERY - SHREVEPORT FIELD | GREENWOOD, Caddo, LA | Pass | State |
| 2025-07-17 | GREEN 7&30-17-14HC #1 #2-ALT & #3-ALT TANK BATTERY - SHREVEPORT FIELD | GREENWOOD, Caddo, LA | Pass | State |
| 2025-07-16 | GREEN 7&30-17-14HC #1 #2-ALT & #3-ALT TANK BATTERY - SHREVEPORT FIELD | GREENWOOD, Caddo, LA | Pass | State |
| 2025-07-16 | GREEN 7&30-17-14HC #1 #2-ALT & #3-ALT TANK BATTERY - SHREVEPORT FIELD | GREENWOOD, Caddo, LA | Pass | State |
| 2025-07-15 | MARTIN 34&3-16-16 HC #1 #2 & #3 TANK BATTERY - GREENWOOD-WASKOM FIELD | BETHANY, Caddo, LA | Pass | State |
| 2025-07-08 | GOLDEN MEADOW TANK BATTERY #6 PRODUCTION FACILITY | GOLDEN MEADOW, Lafourche, LA | Pass | State |
| 2025-06-18 | MARTIN 34&3-16-16 HC #1 #2 & #3 TANK BATTERY - GREENWOOD-WASKOM FIELD | BETHANY, Caddo, LA | Pass | State |
| 2025-06-18 | MARTIN 34&3-16-16 HC #1 #2 & #3 TANK BATTERY - GREENWOOD-WASKOM FIELD | BETHANY, Caddo, LA | Pass | State |
| 2025-06-17 | ONEAL 9&16-14-16 HC #1-ALT #2-ALT & #3-ALT TANK BATTERY - BETHANY LONGSTREET FIE | FOUR FORKS, Caddo, LA | Pass | State |
| 2025-06-17 | ONEAL 9&16-14-16 HC #1-ALT #2-ALT & #3-ALT TANK BATTERY - BETHANY LONGSTREET FIE | FOUR FORKS, Caddo, LA | Pass | State |
| 2025-06-17 | ONEAL 9&16-14-16 HC #1-ALT #2-ALT & #3-ALT TANK BATTERY - BETHANY LONGSTREET FIE | FOUR FORKS, Caddo, LA | Pass | State |
| 2025-06-17 | ONEAL 9&16-14-16 HC #1-ALT #2-ALT & #3-ALT TANK BATTERY - BETHANY LONGSTREET FIE | FOUR FORKS, Caddo, LA | Pass | State |
| 2025-06-17 | ONEAL 9&16-14-16 HC #1-ALT #2-ALT & #3-ALT TANK BATTERY - BETHANY LONGSTREET FIE | FOUR FORKS, Caddo, LA | Pass | State |
| 2025-06-17 | ONEAL 9&16-14-16 HC #1-ALT #2-ALT & #3-ALT TANK BATTERY - BETHANY LONGSTREET FIE | FOUR FORKS, Caddo, LA | Pass | State |
| 2025-06-17 | VALERO REFINING - NEW ORLEANS LLC - ST CHARLES REFINERY | NORCO, St. Charles, LA | Pass | State |
| 2025-06-06 | VENTURE GLOBAL PLAQUEMINES LNG LLC - PLAQUEMINES LNG TERMINAL | PORT SULPHUR, Plaquemines, LA | Pass | State |
| 2025-06-04 | VENTURE GLOBAL PLAQUEMINES LNG LLC - PLAQUEMINES LNG TERMINAL | PORT SULPHUR, Plaquemines, LA | Pass | State |
| 2025-06-01 | VENTURE GLOBAL PLAQUEMINES LNG LLC - PLAQUEMINES LNG TERMINAL | PORT SULPHUR, Plaquemines, LA | Pass | State |
| 2025-05-28 | TRUNKLINE GAS CO LLC - POLLOCK COMPRESSOR STATION | POLLOCK, Grant, LA | Pass | State |
| 2025-05-21 | ENTERGY LOUISIANA LLC - NINEMILE POINT ELECTRIC GENERATING PLANT | WESTWEGO, Jefferson, LA | Pass | State |
| 2025-05-21 | ENTERGY LOUISIANA LLC - NINEMILE POINT ELECTRIC GENERATING PLANT | WESTWEGO, Jefferson, LA | N/A | State |
| 2025-05-20 | ENTERGY LOUISIANA LLC - NINEMILE POINT ELECTRIC GENERATING PLANT | WESTWEGO, Jefferson, LA | N/A | State |
| 2025-05-20 | ENTERGY LOUISIANA LLC - NINEMILE POINT ELECTRIC GENERATING PLANT | WESTWEGO, Jefferson, LA | Pass | State |
| 2025-05-20 | KOCH METHANOL ST JAMES LLC - KOCH METHANOL FACILITY | ST. JAMES, St. James, LA | Pass | State |
| 2025-05-20 | CENTERVILLE COMPRESSOR STATION | CENTERVILLE, St. Mary, LA | Pass | State |
| 2025-05-19 | KOCH METHANOL ST JAMES LLC - KOCH METHANOL FACILITY | ST. JAMES, St. James, LA | Pass | State |
| 2025-05-19 | CENTERVILLE COMPRESSOR STATION | CENTERVILLE, St. Mary, LA | Pass | State |
| 2025-05-16 | KOCH METHANOL ST JAMES LLC - KOCH METHANOL FACILITY | ST. JAMES, St. James, LA | Pass | State |
| 2025-05-14 | KOCH METHANOL ST JAMES LLC - KOCH METHANOL FACILITY | ST. JAMES, St. James, LA | Pass | State |
| 2025-05-14 | KOCH METHANOL ST JAMES LLC - KOCH METHANOL FACILITY | ST. JAMES, St. James, LA | Pass | State |
| 2025-05-08 | SOUTHERN NATURAL GAS CO - TOCA COMPRESSOR STATION | ST. BERNARD, St. Bernard, LA | Pass | State |
| 2025-05-07 | SOUTHERN NATURAL GAS CO - TOCA COMPRESSOR STATION | ST. BERNARD, St. Bernard, LA | Pass | State |
| 2025-05-02 | BAYOU BOUILLON PRODUCTION FACILITY | BUTTE LAROSE, St. Martin, LA | Pass | State |
| 2025-05-02 | BAYOU BOUILLON PRODUCTION FACILITY | BUTTE LAROSE, St. Martin, LA | Pass | State |
| 2025-05-01 | VALERO REFINING - NEW ORLEANS LLC - ST CHARLES REFINERY | NORCO, St. Charles, LA | Pass | State |
| 2025-05-01 | VALERO REFINING - NEW ORLEANS LLC - ST CHARLES REFINERY | NORCO, St. Charles, LA | Pass | State |
| 2025-05-01 | VALERO REFINING - NEW ORLEANS LLC - ST CHARLES REFINERY | NORCO, St. Charles, LA | Pass | State |
| 2025-05-01 | VALERO REFINING - NEW ORLEANS LLC - ST CHARLES REFINERY | NORCO, St. Charles, LA | Pass | State |
| 2025-04-30 | VALERO REFINING - NEW ORLEANS LLC - ST CHARLES REFINERY | NORCO, St. Charles, LA | Pass | State |
| 2025-04-30 | VALERO REFINING - NEW ORLEANS LLC - ST CHARLES REFINERY | NORCO, St. Charles, LA | Pass | State |
| 2025-04-29 | VALERO REFINING - NEW ORLEANS LLC - ST CHARLES REFINERY | NORCO, St. Charles, LA | Pass | State |
| 2025-04-29 | VALERO REFINING - NEW ORLEANS LLC - ST CHARLES REFINERY | NORCO, St. Charles, LA | Pass | State |
| 2025-04-16 | GARDEN ISLAND BAY TANK BATTERY #7 (49) | PILOTTOWN, Plaquemines, LA | Pass | State |
| 2025-04-09 | DISCOVERY PRODUCER SERVICES LLC - LAROSE GAS PROCESSING PLANT — high-priority violation on file | LAROSE, Lafourche, LA | Pass | State |
| 2025-04-08 | DISCOVERY PRODUCER SERVICES LLC - LAROSE GAS PROCESSING PLANT — high-priority violation on file | LAROSE, Lafourche, LA | Pass | State |
| 2025-04-03 | DOWLING 28 A PAD | SIMSBORO, Lincoln, LA | Pass | State |
| 2025-04-03 | VENTURE GLOBAL PLAQUEMINES LNG LLC - PLAQUEMINES LNG TERMINAL | PORT SULPHUR, Plaquemines, LA | N/A | State |
| 2025-04-02 | VENTURE GLOBAL PLAQUEMINES LNG LLC - PLAQUEMINES LNG TERMINAL | PORT SULPHUR, Plaquemines, LA | Pass | State |
| 2025-03-29 | VENTURE GLOBAL PLAQUEMINES LNG LLC - PLAQUEMINES LNG TERMINAL | PORT SULPHUR, Plaquemines, LA | Pass | State |
| 2025-03-27 | OLYMPIA MINERALS #2-ALT PRODUCTION FACILITY-BRUSHY CREEK FIELD | MERRYVILLE, Beauregard, LA | Pass | State |
| 2025-03-27 | VENTURE GLOBAL PLAQUEMINES LNG LLC - PLAQUEMINES LNG TERMINAL | PORT SULPHUR, Plaquemines, LA | Pass | State |
| 2025-03-26 | VENTURE GLOBAL PLAQUEMINES LNG LLC - PLAQUEMINES LNG TERMINAL | PORT SULPHUR, Plaquemines, LA | N/A | State |
| 2025-03-12 | ADM GRAIN RIVER SYSTEM INC - AMA GRAIN ELEVATOR FACILITY | AMA, St. Charles, LA | Fail | State |
| 2025-02-28 | VENTURE GLOBAL PLAQUEMINES LNG LLC - PLAQUEMINES LNG TERMINAL | PORT SULPHUR, Plaquemines, LA | Pass | State |
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Dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.