EPA Air · stack tests by state and year
Air-emissions stack tests in Mississippi, 2026
- 263Stack 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 Mississippi during 2026; one facility can appear more than once, because this is a record of what happened rather than a list of places.
Counties in Mississippi, 2026
- Lowndes County 34
- Hancock County 34
- Simpson County 28
- Smith County 25
- Perry County 18
- Hinds County 16
- Jackson County 16
- Wayne County 15
- Greene County 12
- Tippah County 11
- Monroe County 10
- Harrison County 10
- Lawrence County 8
- Quitman County 4
- Lauderdale County 3
- Jones County 3
- Covington County 3
- Walthall County 3
- Jasper County 3
- Lamar County 3
Mississippi, other years
Air-emissions stack tests recorded in Mississippi, 2026
| Date | Facility | Where | Kind | Agency |
|---|---|---|---|---|
| 2026-07-29 | TELLUS OPERATING GROUP LLC, RALEIGH CO2 PLANT | RALEIGH, Smith, MS | Pass | State |
| 2026-06-24 | BAKELITE CHEMICALS LLC, TAYLORSVILLE — high-priority violation on file | TAYLORSVILLE, Smith, MS | Pass | State |
| 2026-06-24 | BAKELITE CHEMICALS LLC, TAYLORSVILLE — high-priority violation on file | TAYLORSVILLE, Smith, MS | Pass | State |
| 2026-06-24 | BAKELITE CHEMICALS LLC, TAYLORSVILLE — high-priority violation on file | TAYLORSVILLE, Smith, MS | Pass | State |
| 2026-05-28 | GCF US HOLDINGS, LLC - COLUMBUS MILL — high-priority violation on file | COLUMBUS, Lowndes, MS | Pass | State |
| 2026-05-28 | GCF US HOLDINGS, LLC - COLUMBUS MILL — high-priority violation on file | COLUMBUS, Lowndes, MS | Pass | State |
| 2026-05-27 | KENTUCKY TENNESSEE CLAY COMPANY, SLEDGE | CRENSHAW, Quitman, MS | Pass | State |
| 2026-05-27 | KENTUCKY TENNESSEE CLAY COMPANY, SLEDGE | CRENSHAW, Quitman, MS | Pass | State |
| 2026-05-27 | KENTUCKY TENNESSEE CLAY COMPANY, SLEDGE | CRENSHAW, Quitman, MS | Pass | State |
| 2026-05-26 | KENTUCKY TENNESSEE CLAY COMPANY, SLEDGE | CRENSHAW, Quitman, MS | Pass | State |
| 2026-05-15 | GREENLEAF CO2 SOLUTIONS LLC, WEST YELLOW CREEK COMPRESSOR STATION — high-priority violation on file | WAYNESBORO, Wayne, MS | Pass | State |
| 2026-05-15 | GREENLEAF CO2 SOLUTIONS LLC, WEST YELLOW CREEK COMPRESSOR STATION — high-priority violation on file | WAYNESBORO, Wayne, MS | Pass | State |
| 2026-05-15 | GREENLEAF CO2 SOLUTIONS LLC, WEST YELLOW CREEK COMPRESSOR STATION — high-priority violation on file | WAYNESBORO, Wayne, MS | Pass | State |
| 2026-05-15 | GREENLEAF CO2 SOLUTIONS LLC, WEST YELLOW CREEK COMPRESSOR STATION — high-priority violation on file | WAYNESBORO, Wayne, MS | Pass | State |
| 2026-05-15 | GREENLEAF CO2 SOLUTIONS LLC, WEST YELLOW CREEK COMPRESSOR STATION — high-priority violation on file | WAYNESBORO, Wayne, MS | Pass | State |
| 2026-05-15 | GREENLEAF CO2 SOLUTIONS LLC, WEST YELLOW CREEK COMPRESSOR STATION — high-priority violation on file | WAYNESBORO, Wayne, MS | Pass | State |
| 2026-05-14 | TRANSMONTAIGNE OPERATING COMPANY LP, COLLINS SOUTHEAST TERMINAL | COLLINS, Covington, MS | Pass | State |
| 2026-05-14 | TRANSMONTAIGNE OPERATING COMPANY LP, COLLINS SOUTHEAST TERMINAL | COLLINS, Covington, MS | Pass | State |
| 2026-05-14 | TRANSMONTAIGNE OPERATING COMPANY LP, COLLINS SOUTHEAST TERMINAL | COLLINS, Covington, MS | Pass | State |
| 2026-05-14 | GCF US HOLDINGS, LLC - COLUMBUS MILL — high-priority violation on file | COLUMBUS, Lowndes, MS | Pass | State |
| 2026-05-13 | TRANSMONTAIGNE OPERATING COMPANY LP, MERIDIAN TERMINAL | MERIDIAN, Lauderdale, MS | Pass | State |
| 2026-05-13 | TRANSMONTAIGNE OPERATING COMPANY LP, MERIDIAN TERMINAL | MERIDIAN, Lauderdale, MS | Pass | State |
| 2026-05-13 | TRANSMONTAIGNE OPERATING COMPANY LP, MERIDIAN TERMINAL | MERIDIAN, Lauderdale, MS | Pass | State |
| 2026-05-13 | GEORGIA PACIFIC MONTICELLO LLC | MONTICELLO, Lawrence, MS | Pass | State |
| 2026-05-12 | GEORGIA PACIFIC MONTICELLO LLC | MONTICELLO, Lawrence, MS | Pass | State |
| 2026-05-12 | WATCO TRANSLOADING LLC, WTPS AMORY BULK TERMINAL — high-priority violation on file | AMORY, Monroe, MS | Pass | State |
| 2026-05-12 | WATCO TRANSLOADING LLC, WTPS AMORY BULK TERMINAL — high-priority violation on file | AMORY, Monroe, MS | Pass | State |
| 2026-05-12 | WATCO TRANSLOADING LLC, WTPS AMORY BULK TERMINAL — high-priority violation on file | AMORY, Monroe, MS | Pass | State |
| 2026-05-12 | WATCO TRANSLOADING LLC, WTPS AMORY BULK TERMINAL — high-priority violation on file | AMORY, Monroe, MS | Pass | State |
| 2026-05-12 | WATCO TRANSLOADING LLC, WTPS AMORY BULK TERMINAL — high-priority violation on file | AMORY, Monroe, MS | Pass | State |
| 2026-05-12 | WATCO TRANSLOADING LLC, WTPS AMORY BULK TERMINAL — high-priority violation on file | AMORY, Monroe, MS | Pass | State |
| 2026-05-12 | WATCO TRANSLOADING LLC, WTPS AMORY BULK TERMINAL — high-priority violation on file | AMORY, Monroe, MS | Pass | State |
| 2026-05-12 | WATCO TRANSLOADING LLC, WTPS AMORY BULK TERMINAL — high-priority violation on file | AMORY, Monroe, MS | Pass | State |
| 2026-05-12 | WATCO TRANSLOADING LLC, WTPS AMORY BULK TERMINAL — high-priority violation on file | AMORY, Monroe, MS | Pass | State |
| 2026-05-12 | WATCO TRANSLOADING LLC, WTPS AMORY BULK TERMINAL — high-priority violation on file | AMORY, Monroe, MS | Pass | State |
| 2026-05-07 | CHEMOURS COMPANY FC LLC THE, DELISLE PLANT | PASS CHRISTI, Harrison, MS | Pass | State |
| 2026-05-07 | CHEMOURS COMPANY FC LLC THE, DELISLE PLANT | PASS CHRISTI, Harrison, MS | Pass | State |
| 2026-05-07 | CHEMOURS COMPANY FC LLC THE, DELISLE PLANT | PASS CHRISTI, Harrison, MS | Pass | State |
| 2026-05-07 | CHEMOURS COMPANY FC LLC THE, DELISLE PLANT | PASS CHRISTI, Harrison, MS | Pass | State |
| 2026-05-07 | CHEMOURS COMPANY FC LLC THE, DELISLE PLANT | PASS CHRISTI, Harrison, MS | Pass | State |
| 2026-05-07 | CHEMOURS COMPANY FC LLC THE, DELISLE PLANT | PASS CHRISTI, Harrison, MS | Pass | State |
| 2026-05-07 | BAKELITE CHEMICALS LLC, TAYLORSVILLE — high-priority violation on file | TAYLORSVILLE, Smith, MS | Pass | State |
| 2026-05-07 | BAKELITE CHEMICALS LLC, TAYLORSVILLE — high-priority violation on file | TAYLORSVILLE, Smith, MS | Pass | State |
| 2026-05-07 | BAKELITE CHEMICALS LLC, TAYLORSVILLE — high-priority violation on file | TAYLORSVILLE, Smith, MS | Pass | State |
| 2026-05-06 | ENSTOR GAS, LLC, MISSISSIPPI HUB EXPANSION PROJECT — high-priority violation on file | MAGEE, Simpson, MS | Pass | State |
| 2026-05-06 | ENSTOR GAS, LLC, MISSISSIPPI HUB EXPANSION PROJECT — high-priority violation on file | MAGEE, Simpson, MS | Pass | State |
| 2026-05-06 | ENSTOR GAS, LLC, MISSISSIPPI HUB EXPANSION PROJECT — high-priority violation on file | MAGEE, Simpson, MS | Pass | State |
| 2026-05-06 | ENSTOR GAS, LLC, MISSISSIPPI HUB EXPANSION PROJECT — high-priority violation on file | MAGEE, Simpson, MS | Pass | State |
| 2026-05-06 | ENSTOR GAS, LLC, MISSISSIPPI HUB EXPANSION PROJECT — high-priority violation on file | MAGEE, Simpson, MS | Pass | State |
| 2026-05-06 | ENSTOR GAS, LLC, MISSISSIPPI HUB EXPANSION PROJECT — high-priority violation on file | MAGEE, Simpson, MS | Pass | State |
| 2026-05-05 | ENSTOR GAS, LLC, MISSISSIPPI HUB EXPANSION PROJECT — high-priority violation on file | MAGEE, Simpson, MS | Pass | State |
| 2026-05-05 | ENSTOR GAS, LLC, MISSISSIPPI HUB EXPANSION PROJECT — high-priority violation on file | MAGEE, Simpson, MS | Pass | State |
| 2026-05-05 | ENSTOR GAS, LLC, MISSISSIPPI HUB EXPANSION PROJECT — high-priority violation on file | MAGEE, Simpson, MS | Pass | State |
| 2026-05-05 | ENSTOR GAS, LLC, MISSISSIPPI HUB EXPANSION PROJECT — high-priority violation on file | MAGEE, Simpson, MS | Pass | State |
| 2026-05-05 | ENSTOR GAS, LLC, MISSISSIPPI HUB EXPANSION PROJECT — high-priority violation on file | MAGEE, Simpson, MS | Pass | State |
| 2026-05-05 | ENSTOR GAS, LLC, MISSISSIPPI HUB EXPANSION PROJECT — high-priority violation on file | MAGEE, Simpson, MS | Pass | State |
| 2026-05-05 | BAKELITE CHEMICALS LLC, TAYLORSVILLE — high-priority violation on file | TAYLORSVILLE, Smith, MS | Pass | State |
| 2026-05-05 | BAKELITE CHEMICALS LLC, TAYLORSVILLE — high-priority violation on file | TAYLORSVILLE, Smith, MS | Pass | State |
| 2026-05-05 | BAKELITE CHEMICALS LLC, TAYLORSVILLE — high-priority violation on file | TAYLORSVILLE, Smith, MS | Pass | State |
| 2026-04-30 | CALGON CARBON CORPORATION | BAY ST. LOUI, Hancock, MS | Pass | State |
| 2026-04-29 | CALGON CARBON CORPORATION | BAY ST. LOUI, Hancock, MS | Pass | State |
| 2026-04-29 | CALGON CARBON CORPORATION | BAY ST. LOUI, Hancock, MS | Pass | State |
| 2026-04-29 | CHEVRON USA INC, CHEVRON PRODUCTS COMPANY, PASCAGOULA REFINERY | PASCAGOULA, Jackson, MS | Pass | State |
| 2026-04-29 | CHEVRON USA INC, CHEVRON PRODUCTS COMPANY, PASCAGOULA REFINERY | PASCAGOULA, Jackson, MS | Pass | State |
| 2026-04-29 | CHEVRON USA INC, CHEVRON PRODUCTS COMPANY, PASCAGOULA REFINERY | PASCAGOULA, Jackson, MS | Pass | State |
| 2026-04-29 | COOPERATIVE ENERGY, A MISSISSIPPI ELECTRIC COOPERATIVE, SYLVARENA GENERATING PLA — high-priority violation on file | BAY SPRINGS, Smith, MS | Pass | State |
| 2026-04-28 | CALGON CARBON CORPORATION | BAY ST. LOUI, Hancock, MS | Pass | State |
| 2026-04-28 | CHEVRON USA INC, CHEVRON PRODUCTS COMPANY, PASCAGOULA REFINERY | PASCAGOULA, Jackson, MS | Pass | State |
| 2026-04-28 | COOPERATIVE ENERGY, A MISSISSIPPI ELECTRIC COOPERATIVE, SYLVARENA GENERATING PLA — high-priority violation on file | BAY SPRINGS, Smith, MS | Pass | State |
| 2026-04-27 | CALGON CARBON CORPORATION | BAY ST. LOUI, Hancock, MS | Pass | State |
| 2026-04-27 | CALGON CARBON CORPORATION | BAY ST. LOUI, Hancock, MS | Pass | State |
| 2026-04-23 | FLORIDA GAS TRANSMISSION COMPANY LLC, WIGGINS COMPRESSOR STATION NUMBER 10 | WIGGINS, Perry, MS | Pass | State |
| 2026-04-23 | FLORIDA GAS TRANSMISSION COMPANY LLC, WIGGINS COMPRESSOR STATION NUMBER 10 | WIGGINS, Perry, MS | Pass | State |
| 2026-04-22 | FLORIDA GAS TRANSMISSION COMPANY LLC, WIGGINS COMPRESSOR STATION NUMBER 10 | WIGGINS, Perry, MS | Pass | State |
| 2026-04-22 | FLORIDA GAS TRANSMISSION COMPANY LLC, WIGGINS COMPRESSOR STATION NUMBER 10 | WIGGINS, Perry, MS | Pass | State |
| 2026-04-22 | FLORIDA GAS TRANSMISSION COMPANY LLC, WIGGINS COMPRESSOR STATION NUMBER 10 | WIGGINS, Perry, MS | Pass | State |
| 2026-04-22 | FLORIDA GAS TRANSMISSION COMPANY LLC, WIGGINS COMPRESSOR STATION NUMBER 10 | WIGGINS, Perry, MS | Pass | State |
| 2026-04-22 | FLORIDA GAS TRANSMISSION COMPANY LLC, WIGGINS COMPRESSOR STATION NUMBER 10 | WIGGINS, Perry, MS | Pass | State |
| 2026-04-22 | FLORIDA GAS TRANSMISSION COMPANY LLC, WIGGINS COMPRESSOR STATION NUMBER 10 | WIGGINS, Perry, MS | Pass | State |
| 2026-04-21 | GULF SOUTH PIPELINE COMPANY LLC, KILN COMPRESSOR STATION | KILN, Hancock, MS | Pass | State |
| 2026-04-21 | GULF SOUTH PIPELINE COMPANY LLC, KILN COMPRESSOR STATION | KILN, Hancock, MS | Pass | State |
| 2026-04-20 | CHEMOURS COMPANY FC LLC THE, DELISLE PLANT | PASS CHRISTI, Harrison, MS | Pass | State |
| 2026-04-20 | CHEMOURS COMPANY FC LLC THE, DELISLE PLANT | PASS CHRISTI, Harrison, MS | Pass | State |
| 2026-04-20 | CHEMOURS COMPANY FC LLC THE, DELISLE PLANT | PASS CHRISTI, Harrison, MS | Pass | State |
| 2026-04-20 | CHEMOURS COMPANY FC LLC THE, DELISLE PLANT | PASS CHRISTI, Harrison, MS | Pass | State |
| 2026-04-16 | CHEVRON USA INC, CHEVRON PRODUCTS COMPANY, PASCAGOULA REFINERY | PASCAGOULA, Jackson, MS | Pass | State |
| 2026-04-16 | CHEVRON USA INC, CHEVRON PRODUCTS COMPANY, PASCAGOULA REFINERY | PASCAGOULA, Jackson, MS | Pass | State |
| 2026-04-15 | CHEVRON USA INC, CHEVRON PRODUCTS COMPANY, PASCAGOULA REFINERY | PASCAGOULA, Jackson, MS | Pass | State |
| 2026-04-14 | CHEVRON USA INC, CHEVRON PRODUCTS COMPANY, PASCAGOULA REFINERY | PASCAGOULA, Jackson, MS | Pass | State |
| 2026-04-14 | GEORGIA PACIFIC MONTICELLO LLC | MONTICELLO, Lawrence, MS | Pass | State |
| 2026-04-14 | GEORGIA PACIFIC MONTICELLO LLC | MONTICELLO, Lawrence, MS | Pass | State |
| 2026-04-14 | GEORGIA PACIFIC MONTICELLO LLC | MONTICELLO, Lawrence, MS | Pass | State |
| 2026-04-14 | GEORGIA PACIFIC MONTICELLO LLC | MONTICELLO, Lawrence, MS | Pass | State |
| 2026-04-10 | ALUMINUM DYNAMICS, LLC | COLUMBUS, Lowndes, MS | Pass | State |
| 2026-04-10 | ALUMINUM DYNAMICS, LLC | COLUMBUS, Lowndes, MS | Pass | State |
| 2026-04-10 | ALUMINUM DYNAMICS, LLC | COLUMBUS, Lowndes, MS | Pass | State |
| 2026-04-01 | VENTURE OIL AND GAS INC, HIWANNEE OPERATIONS — high-priority violation on file | WAYNESBORO, Wayne, MS | Pass | State |
| 2026-04-01 | VENTURE OIL AND GAS INC, HIWANNEE OPERATIONS — high-priority violation on file | WAYNESBORO, Wayne, MS | Pass | State |
| 2026-04-01 | VENTURE OIL AND GAS INC, HIWANNEE OPERATIONS — high-priority violation on file | WAYNESBORO, Wayne, MS | Pass | State |
| 2026-03-31 | GCF US HOLDINGS, LLC - COLUMBUS MILL — high-priority violation on file | COLUMBUS, Lowndes, MS | Pass | State |
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Dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.