EPA Air · stack tests by state and year
Air-emissions stack tests in Mississippi, 2025
- 688Stack 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 2025; one facility can appear more than once, because this is a record of what happened rather than a list of places.
Counties in Mississippi, 2025
- Madison County 67
- Lowndes County 58
- Hinds County 55
- Jackson County 47
- Monroe County 47
- Lawrence County 41
- Perry County 26
- Lee County 25
- Smith County 25
- Harrison County 20
- Wayne County 20
- Choctaw County 19
- Jones County 19
- Simpson County 18
- Yazoo County 17
- Warren County 15
- Grenada County 14
- DeSoto County 13
- Noxubee County 12
- Covington County 11
- Panola County 11
- Forrest County 11
- Stone County 10
- Clarke County 10
- Jasper County 8
- Jefferson Davis County 7
- Copiah County 6
- George County 6
- Greene County 6
- Lamar County 5
- Alcorn County 4
- Humphreys County 4
- Washington County 4
- Scott County 4
- Kemper County 4
- Union County 4
- Hancock County 3
- Marshall County 3
- Walthall County 3
- Pontotoc County 3
- Lauderdale County 3
Mississippi, other years
Air-emissions stack tests recorded in Mississippi, 2025
| Date | Facility | Where | Kind | Agency |
|---|---|---|---|---|
| 2025-11-13 | GEORGIA PACIFIC MONTICELLO LLC | MONTICELLO, Lawrence, MS | Pass | State |
| 2025-11-13 | GEORGIA PACIFIC MONTICELLO LLC | MONTICELLO, Lawrence, MS | Pass | State |
| 2025-11-13 | GEORGIA PACIFIC MONTICELLO LLC | MONTICELLO, Lawrence, MS | Pass | State |
| 2025-11-12 | GEORGIA PACIFIC MONTICELLO LLC | MONTICELLO, Lawrence, MS | Pass | State |
| 2025-11-11 | GEORGIA PACIFIC MONTICELLO LLC | MONTICELLO, Lawrence, MS | Pass | State |
| 2025-10-31 | EP ENGINEERED CLAYS CORPORATION — high-priority violation on file | JACKSON, Hinds, MS | Pass | State |
| 2025-10-31 | EP ENGINEERED CLAYS CORPORATION — high-priority violation on file | JACKSON, Hinds, MS | Pass | State |
| 2025-10-30 | EP ENGINEERED CLAYS CORPORATION — high-priority violation on file | JACKSON, Hinds, MS | Pass | State |
| 2025-10-30 | EP ENGINEERED CLAYS CORPORATION — high-priority violation on file | JACKSON, Hinds, MS | Pass | State |
| 2025-10-29 | EP ENGINEERED CLAYS CORPORATION — high-priority violation on file | JACKSON, Hinds, MS | Fail | State |
| 2025-10-29 | EP ENGINEERED CLAYS CORPORATION — high-priority violation on file | JACKSON, Hinds, MS | Pass | State |
| 2025-10-29 | EP ENGINEERED CLAYS CORPORATION — high-priority violation on file | JACKSON, Hinds, MS | Pass | State |
| 2025-10-29 | EP ENGINEERED CLAYS CORPORATION — high-priority violation on file | JACKSON, Hinds, MS | Pass | State |
| 2025-10-28 | EP ENGINEERED CLAYS CORPORATION — high-priority violation on file | JACKSON, Hinds, MS | Pass | State |
| 2025-10-28 | EP ENGINEERED CLAYS CORPORATION — high-priority violation on file | JACKSON, Hinds, MS | Pass | State |
| 2025-10-28 | EP ENGINEERED CLAYS CORPORATION — high-priority violation on file | JACKSON, Hinds, MS | Pass | State |
| 2025-10-28 | EP ENGINEERED CLAYS CORPORATION — high-priority violation on file | JACKSON, Hinds, MS | Pass | State |
| 2025-10-28 | EP ENGINEERED CLAYS CORPORATION — high-priority violation on file | JACKSON, Hinds, MS | Pass | State |
| 2025-10-28 | EP ENGINEERED CLAYS CORPORATION — high-priority violation on file | JACKSON, Hinds, MS | Pass | State |
| 2025-10-28 | EP ENGINEERED CLAYS CORPORATION — high-priority violation on file | JACKSON, Hinds, MS | Pass | State |
| 2025-10-28 | EP ENGINEERED CLAYS CORPORATION — high-priority violation on file | JACKSON, Hinds, MS | Pass | State |
| 2025-10-27 | EP ENGINEERED CLAYS CORPORATION — high-priority violation on file | JACKSON, Hinds, MS | Pass | State |
| 2025-10-27 | EP ENGINEERED CLAYS CORPORATION — high-priority violation on file | JACKSON, Hinds, MS | Pass | State |
| 2025-10-27 | GCF US HOLDINGS, LLC - COLUMBUS MILL — high-priority violation on file | COLUMBUS, Lowndes, MS | Pass | State |
| 2025-10-24 | EP ENGINEERED CLAYS CORPORATION — high-priority violation on file | JACKSON, Hinds, MS | Fail | State |
| 2025-10-24 | EP ENGINEERED CLAYS CORPORATION — high-priority violation on file | JACKSON, Hinds, MS | Pass | State |
| 2025-10-24 | EP ENGINEERED CLAYS CORPORATION — high-priority violation on file | JACKSON, Hinds, MS | Pass | State |
| 2025-10-24 | EP ENGINEERED CLAYS CORPORATION — high-priority violation on file | JACKSON, Hinds, MS | Pass | State |
| 2025-10-24 | EP ENGINEERED CLAYS CORPORATION — high-priority violation on file | JACKSON, Hinds, MS | Pass | State |
| 2025-10-24 | EP ENGINEERED CLAYS CORPORATION — high-priority violation on file | JACKSON, Hinds, MS | Pass | State |
| 2025-10-23 | EP ENGINEERED CLAYS CORPORATION — high-priority violation on file | JACKSON, Hinds, MS | Pass | State |
| 2025-10-23 | EP ENGINEERED CLAYS CORPORATION — high-priority violation on file | JACKSON, Hinds, MS | Pass | State |
| 2025-10-23 | EP ENGINEERED CLAYS CORPORATION — high-priority violation on file | JACKSON, Hinds, MS | Pass | State |
| 2025-10-23 | EP ENGINEERED CLAYS CORPORATION — high-priority violation on file | JACKSON, Hinds, MS | Pass | State |
| 2025-10-22 | EP ENGINEERED CLAYS CORPORATION — high-priority violation on file | JACKSON, Hinds, MS | Fail | State |
| 2025-10-22 | EP ENGINEERED CLAYS CORPORATION — high-priority violation on file | JACKSON, Hinds, MS | Pass | State |
| 2025-10-22 | EP ENGINEERED CLAYS CORPORATION — high-priority violation on file | JACKSON, Hinds, MS | Fail | State |
| 2025-10-22 | EP ENGINEERED CLAYS CORPORATION — high-priority violation on file | JACKSON, Hinds, MS | Pass | State |
| 2025-10-22 | EP ENGINEERED CLAYS CORPORATION — high-priority violation on file | JACKSON, Hinds, MS | Pass | State |
| 2025-10-22 | EP ENGINEERED CLAYS CORPORATION — high-priority violation on file | JACKSON, Hinds, MS | Pass | State |
| 2025-10-22 | USG INTERIORS LLC | GREENVILLE, Washington, MS | Pass | State |
| 2025-10-22 | USG INTERIORS LLC | GREENVILLE, Washington, MS | Pass | State |
| 2025-10-21 | EP ENGINEERED CLAYS CORPORATION — high-priority violation on file | JACKSON, Hinds, MS | Pass | State |
| 2025-10-21 | EP ENGINEERED CLAYS CORPORATION — high-priority violation on file | JACKSON, Hinds, MS | Pass | State |
| 2025-10-21 | MISSISSIPPI POWER COMPANY, CHEVRON COGENERATING PLANT | PASCAGOULA, Jackson, MS | Pass | State |
| 2025-10-21 | ROXUL USA INC | BYHALIA, Marshall, MS | Pass | State |
| 2025-10-21 | ROXUL USA INC | BYHALIA, Marshall, MS | Pass | State |
| 2025-10-21 | ROXUL USA INC | BYHALIA, Marshall, MS | Pass | State |
| 2025-10-21 | USG INTERIORS LLC | GREENVILLE, Washington, MS | Pass | State |
| 2025-10-15 | COOPERATIVE ENERGY, A MISSISSIPPI ELECTRIC COOPERATIVE, BENNDALE PEAKING STATION — high-priority violation on file | BENNDALE, George, MS | Pass | State |
| 2025-10-15 | COOPERATIVE ENERGY, A MISSISSIPPI ELECTRIC COOPERATIVE, BENNDALE PEAKING STATION — high-priority violation on file | BENNDALE, George, MS | Pass | State |
| 2025-10-15 | COOPERATIVE ENERGY, A MISSISSIPPI ELECTRIC COOPERATIVE, BENNDALE PEAKING STATION — high-priority violation on file | BENNDALE, George, MS | Pass | State |
| 2025-10-15 | CHEMOURS COMPANY FC LLC THE, DELISLE PLANT | PASS CHRISTI, Harrison, MS | Pass | State |
| 2025-10-15 | CHEMOURS COMPANY FC LLC THE, DELISLE PLANT | PASS CHRISTI, Harrison, MS | Pass | State |
| 2025-10-15 | CHEMOURS COMPANY FC LLC THE, DELISLE PLANT | PASS CHRISTI, Harrison, MS | Pass | State |
| 2025-10-15 | CHEMOURS COMPANY FC LLC THE, DELISLE PLANT | PASS CHRISTI, Harrison, MS | Pass | State |
| 2025-10-15 | CHEMOURS COMPANY FC LLC THE, DELISLE PLANT | PASS CHRISTI, Harrison, MS | Pass | State |
| 2025-10-15 | CHEMOURS COMPANY FC LLC THE, DELISLE PLANT | PASS CHRISTI, Harrison, MS | Pass | State |
| 2025-10-14 | COOPERATIVE ENERGY, A MISSISSIPPI ELECTRIC COOPERATIVE, BENNDALE PEAKING STATION — high-priority violation on file | BENNDALE, George, MS | Pass | State |
| 2025-10-14 | COOPERATIVE ENERGY, A MISSISSIPPI ELECTRIC COOPERATIVE, BENNDALE PEAKING STATION — high-priority violation on file | BENNDALE, George, MS | Pass | State |
| 2025-10-14 | COOPERATIVE ENERGY, A MISSISSIPPI ELECTRIC COOPERATIVE, BENNDALE PEAKING STATION — high-priority violation on file | BENNDALE, George, MS | Pass | State |
| 2025-10-13 | DESTIN PIPELINE COMPANY LLC, PASCAGOULA COMPRESSOR STATION | MOSS POINT, Jackson, MS | Pass | State |
| 2025-10-13 | DESTIN PIPELINE COMPANY LLC, PASCAGOULA COMPRESSOR STATION | MOSS POINT, Jackson, MS | Pass | State |
| 2025-10-10 | COLUMBIA GULF TRANSMISSION LLC, INVERNESS COMPRESSOR STATION | INVERNESS, Humphreys, MS | Pass | State |
| 2025-10-10 | COLUMBIA GULF TRANSMISSION LLC, INVERNESS COMPRESSOR STATION | INVERNESS, Humphreys, MS | Pass | State |
| 2025-10-08 | COLUMBIA GULF TRANSMISSION LLC, INVERNESS COMPRESSOR STATION | INVERNESS, Humphreys, MS | Pass | State |
| 2025-10-08 | COLUMBIA GULF TRANSMISSION LLC, INVERNESS COMPRESSOR STATION | INVERNESS, Humphreys, MS | Pass | State |
| 2025-10-07 | BATESVILLE MANUFACTURING LLC, VICKSBURG | VICKSBURG, Warren, MS | Pass | State |
| 2025-10-07 | BATESVILLE MANUFACTURING LLC, VICKSBURG | VICKSBURG, Warren, MS | Pass | State |
| 2025-10-07 | BATESVILLE MANUFACTURING LLC, VICKSBURG | VICKSBURG, Warren, MS | Pass | State |
| 2025-10-07 | BATESVILLE MANUFACTURING LLC, VICKSBURG | VICKSBURG, Warren, MS | Pass | State |
| 2025-09-30 | MISSISSIPPI POWER COMPANY, DAVID M RATCLIFFE | DEKALB, Kemper, MS | Pass | State |
| 2025-09-23 | SHUQUALAK LUMBER COMPANY INC, PLANER MILL DIVISION — high-priority violation on file | SHUQUALAK, Noxubee, MS | Pass | State |
| 2025-09-23 | SHUQUALAK LUMBER COMPANY INC, PLANER MILL DIVISION — high-priority violation on file | SHUQUALAK, Noxubee, MS | Pass | State |
| 2025-09-23 | SHUQUALAK LUMBER COMPANY INC, PLANER MILL DIVISION — high-priority violation on file | SHUQUALAK, Noxubee, MS | Pass | State |
| 2025-09-23 | SHUQUALAK LUMBER COMPANY INC, PLANER MILL DIVISION — high-priority violation on file | SHUQUALAK, Noxubee, MS | Pass | State |
| 2025-09-23 | SHUQUALAK LUMBER COMPANY INC, PLANER MILL DIVISION — high-priority violation on file | SHUQUALAK, Noxubee, MS | Pass | State |
| 2025-09-23 | SHUQUALAK LUMBER COMPANY INC, PLANER MILL DIVISION — high-priority violation on file | SHUQUALAK, Noxubee, MS | Pass | State |
| 2025-09-23 | SHUQUALAK LUMBER COMPANY INC, PLANER MILL DIVISION — high-priority violation on file | SHUQUALAK, Noxubee, MS | Pass | State |
| 2025-09-23 | SHUQUALAK LUMBER COMPANY INC, PLANER MILL DIVISION — high-priority violation on file | SHUQUALAK, Noxubee, MS | Pass | State |
| 2025-09-23 | SHUQUALAK LUMBER COMPANY INC, PLANER MILL DIVISION — high-priority violation on file | SHUQUALAK, Noxubee, MS | Pass | State |
| 2025-09-23 | SHUQUALAK LUMBER COMPANY INC, PLANER MILL DIVISION — high-priority violation on file | SHUQUALAK, Noxubee, MS | Pass | State |
| 2025-09-23 | SHUQUALAK LUMBER COMPANY INC, PLANER MILL DIVISION — high-priority violation on file | SHUQUALAK, Noxubee, MS | Pass | State |
| 2025-09-23 | SHUQUALAK LUMBER COMPANY INC, PLANER MILL DIVISION — high-priority violation on file | SHUQUALAK, Noxubee, MS | Pass | State |
| 2025-09-18 | CHEVRON USA INC, CHEVRON PRODUCTS COMPANY, PASCAGOULA REFINERY | PASCAGOULA, Jackson, MS | Pass | State |
| 2025-09-17 | MASONITE CORPORATION — high-priority violation on file | LAUREL, Jones, MS | Pass | State |
| 2025-09-17 | MASONITE CORPORATION — high-priority violation on file | LAUREL, Jones, MS | Pass | State |
| 2025-09-17 | MASONITE CORPORATION — high-priority violation on file | LAUREL, Jones, MS | Pass | State |
| 2025-09-12 | WESTLAKE CHEMICALS AND VINYLS LLC | ABERDEEN, Monroe, MS | Pass | State |
| 2025-09-12 | WESTLAKE CHEMICALS AND VINYLS LLC | ABERDEEN, Monroe, MS | Pass | State |
| 2025-09-12 | WESTLAKE CHEMICALS AND VINYLS LLC | ABERDEEN, Monroe, MS | Pass | State |
| 2025-09-12 | WESTLAKE CHEMICALS AND VINYLS LLC | ABERDEEN, Monroe, MS | Pass | State |
| 2025-09-12 | APAC MISSISSIPPI INC, YAZOO CITY ASPHALT | YAZOO CITY, Yazoo, MS | Pass | State |
| 2025-09-11 | CHEVRON USA INC, CHEVRON PRODUCTS COMPANY, PASCAGOULA REFINERY | PASCAGOULA, Jackson, MS | Pass | State |
| 2025-09-11 | WESTLAKE CHEMICALS AND VINYLS LLC | ABERDEEN, Monroe, MS | Pass | State |
| 2025-09-11 | WESTLAKE CHEMICALS AND VINYLS LLC | ABERDEEN, Monroe, MS | Pass | State |
| 2025-09-11 | WESTLAKE CHEMICALS AND VINYLS LLC | ABERDEEN, Monroe, MS | Pass | State |
| 2025-09-11 | WESTLAKE CHEMICALS AND VINYLS LLC | ABERDEEN, Monroe, MS | Pass | State |
| 2025-09-11 | GULF SOUTH PIPELINE COMPANY LLC, HARRISVILLE COMPRESSOR STATION | HARRISVILLE, Simpson, MS | Pass | State |
| 2025-09-11 | GULF SOUTH PIPELINE COMPANY LLC, HARRISVILLE COMPRESSOR STATION | HARRISVILLE, Simpson, MS | Pass | State |
Dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.