| BIBiolab INC | Westlake | LA | Chemical Manufacturing325180 | 100-499 | ◐ LIKELY ACTIVE |
| LILouisiana Integrated Polyethylene Jv LLC | Westlake | LA | Chemical Manufacturing325110 | 100-499 | ◐ LIKELY ACTIVE |
| LPLouisiana Pigment Company, L.p. | Westlake | LA | Chemical Manufacturing325130 | 100-499 | ◐ LIKELY ACTIVE |
| EUEagle US 2 LLC - Lake Charles Complex | Westlake | LA | Chemical Manufacturing325180 | — | ◐ LIKELY ACTIVE |
| ECEquistar Chemicals, L.p. - Lake Charles Plant | Sulphur | LA | Chemical Manufacturing325110 | — | ◐ LIKELY ACTIVE |
| ECEquistar Chemicals LP - Lake Charles Polymers Site | Westlake | LA | Chemical Manufacturing325211 | — | ◐ LIKELY ACTIVE |
| BBBonne Bell LLC | Westlake | OH | Chemical Manufacturing325412 | 1-19 | ◐ LIKELY ACTIVE |
| HEHalliburton Energy Svcs | Westlake | LA | Chemical Manufacturing325998 | — | ◐ LIKELY ACTIVE |
| WUWestlake US 2 LLC | Westlake | LA | Chemical Manufacturing325180 | — | ◐ LIKELY ACTIVE |
| LCLotte Chemical Louisiana LLC | Westlake | LA | Chemical Manufacturing325110 | — | ◐ LIKELY ACTIVE |
| PIPpg Industries INC - Silica Plant | Westlake | LA | Chemical Manufacturing325180 | — | ◐ LIKELY ACTIVE |
| CCCertainteed CORP - Lake Charles Polymer Plant | Westlake | LA | Chemical Manufacturing325211 | — | ◐ LIKELY ACTIVE |
| ILIconic Labs LLC | Westlake | OH | Chemical Manufacturing325199 | 1-19 | ◐ LIKELY ACTIVE |
| QUQEMETICA US Silica LLC | Westlake | LA | Chemical Manufacturing325180 | 100-499 | ◐ LIKELY ACTIVE |
| WLWest Lake ASU | Westlake | LA | Chemical Manufacturing325120 | 20-99 | ◐ LIKELY ACTIVE |