EPA Air · stack tests by state, industry and year
Chemical manufacturing (NAICS 3252): stack tests in Mississippi, 2025
- 34Stack tests
A stack test measures what a source actually emits, at the stack, against the limit in its permit. Each row is one stack test recorded during 2025 at a Mississippi source whose primary industry code is NAICS 3252. A facility filing more than one industry code is counted under the first one on its record.
Chemical manufacturing (NAICS 3252) in Mississippi, other years
Other industries in Mississippi, 2025
- Pipeline transportation (NAICS 4862) 103
- Paper manufacturing (NAICS 3221) 100
- Data processing and hosting (NAICS 5182) 62
- Utilities (NAICS 2211) 62
- Utilities (NAICS 2212) 55
- Chemical manufacturing (NAICS 3256) 36
- Petroleum and coal products manufacturing (NAICS 3241) 31
- Food manufacturing (NAICS 3111) 29
- Oil and gas extraction (NAICS 2111) 29
- Primary metal manufacturing (NAICS 3313) 24
- Wood product manufacturing (NAICS 3212) 21
- Chemical manufacturing (NAICS 3251) 20
- Chemical manufacturing (NAICS 3253) 14
- Wood product manufacturing (NAICS 3211) 13
- Wood product manufacturing (NAICS 3219) 12
- Fabricated metal product manufacturing (NAICS 3324) 12
- Nonmetallic mineral product manufacturing (NAICS 3279) 6
- Warehousing and storage (NAICS 4931) 6
- Miscellaneous manufacturing (NAICS 3399) 4
- Mining support (NAICS 2131) 3
- Waste management and remediation (NAICS 5622) 3
- Space research and technology (NAICS 9271) 3
- Transportation equipment manufacturing (NAICS 3361) 3
Air-emissions stack tests recorded in Mississippi, 2025
| Date | Facility | Where | Kind | Agency |
|---|---|---|---|---|
| 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 |
| 2025-09-11 | 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 |
| 2025-09-10 | WESTLAKE CHEMICALS AND VINYLS LLC | ABERDEEN, Monroe, MS | Pass | State |
| 2025-09-10 | WESTLAKE CHEMICALS AND VINYLS LLC | ABERDEEN, Monroe, MS | Pass | State |
| 2025-09-10 | WESTLAKE CHEMICALS AND VINYLS LLC | ABERDEEN, Monroe, MS | Pass | State |
| 2025-09-10 | WESTLAKE CHEMICALS AND VINYLS LLC | ABERDEEN, Monroe, MS | Pass | State |
| 2025-09-10 | WESTLAKE CHEMICALS AND VINYLS LLC | ABERDEEN, Monroe, MS | Pass | State |
| 2025-09-10 | WESTLAKE CHEMICALS AND VINYLS LLC | ABERDEEN, Monroe, MS | Pass | State |
| 2025-09-10 | WESTLAKE CHEMICALS AND VINYLS LLC | ABERDEEN, Monroe, MS | Pass | State |
| 2025-09-10 | WESTLAKE CHEMICALS AND VINYLS LLC | ABERDEEN, Monroe, MS | Pass | State |
| 2025-09-10 | WESTLAKE CHEMICALS AND VINYLS LLC | ABERDEEN, Monroe, MS | Pass | State |
| 2025-09-10 | WESTLAKE CHEMICALS AND VINYLS LLC | ABERDEEN, Monroe, MS | Pass | State |
| 2025-09-10 | WESTLAKE CHEMICALS AND VINYLS LLC | ABERDEEN, Monroe, MS | Pass | State |
| 2025-09-10 | WESTLAKE CHEMICALS AND VINYLS LLC | ABERDEEN, Monroe, MS | Pass | State |
| 2025-09-10 | WESTLAKE CHEMICALS AND VINYLS LLC | ABERDEEN, Monroe, MS | Pass | State |
| 2025-09-10 | WESTLAKE CHEMICALS AND VINYLS LLC | ABERDEEN, Monroe, MS | Pass | State |
| 2025-09-10 | WESTLAKE CHEMICALS AND VINYLS LLC | ABERDEEN, Monroe, MS | Pass | State |
| 2025-09-10 | WESTLAKE CHEMICALS AND VINYLS LLC | ABERDEEN, Monroe, MS | Pass | State |
| 2025-09-09 | WESTLAKE CHEMICALS AND VINYLS LLC | ABERDEEN, Monroe, MS | Pass | State |
| 2025-09-09 | WESTLAKE CHEMICALS AND VINYLS LLC | ABERDEEN, Monroe, MS | Pass | State |
| 2025-09-09 | WESTLAKE CHEMICALS AND VINYLS LLC | ABERDEEN, Monroe, MS | Pass | State |
| 2025-09-09 | WESTLAKE CHEMICALS AND VINYLS LLC | ABERDEEN, Monroe, MS | Pass | State |
| 2025-09-09 | WESTLAKE CHEMICALS AND VINYLS LLC | ABERDEEN, Monroe, MS | Pass | State |
| 2025-09-09 | WESTLAKE CHEMICALS AND VINYLS LLC | ABERDEEN, Monroe, MS | Pass | State |
| 2025-09-09 | WESTLAKE CHEMICALS AND VINYLS LLC | ABERDEEN, Monroe, MS | Pass | State |
| 2025-09-09 | WESTLAKE CHEMICALS AND VINYLS LLC | ABERDEEN, Monroe, MS | Pass | State |
| 2025-04-29 | ZEON CHEMICALS LP | HATTIESBURG, Forrest, MS | Pass | State |
| 2025-04-29 | ZEON CHEMICALS LP | HATTIESBURG, Forrest, MS | Pass | State |
Primary NAICS code as filed on the facility record; dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.