| PIPolychemie INC. Pearl River Plant | Pearl River | — | ◇ UNVERIFIED |
| PCPolyone CORP | Plaquemine | — | ◇ UNVERIFIED |
| PFPort Fourchon North | Golden Meadow | — | ◇ UNVERIFIED |
| PIPpg Industries Inc/lake Charles Complex | Lake Charles | — | ◇ UNVERIFIED |
| PIPraxair INC - Syngas Separation Unit | Geismar | — | ◇ UNVERIFIED |
| PCPremier Chemical Technologies | Lafayette | — | ◇ UNVERIFIED |
| QTQuanta Tech LLC | Lacassine | — | ◇ UNVERIFIED |
| RSResin Sys INC | Sulphur | — | ◇ UNVERIFIED |
| SNSasol North America INC - Lab Plant | Westlake | — | ◇ UNVERIFIED |
| SPSchering Plough Animal Health CORP - W Dual Dr Facility | Baton Rouge | — | ◇ UNVERIFIED |
| SCSigma Coatings USA Bv | Harvey | — | ◇ UNVERIFIED |
 Southern Ionics INC. - Lake Charles Facility | Carlyss | — | ◇ UNVERIFIED |
| SLSouth La Methanol LP - St James Methanol Plant | Saint James | — | ◇ UNVERIFIED |
| SISpace INC | Baton Rouge | — | ◇ UNVERIFIED |
| SMSpecialty Minerals INC | Zachary | — | ◇ UNVERIFIED |
| SFSundrop Fuels Louisiana LLC - Rapides Station Fuels Facility | Boyce | — | ◇ UNVERIFIED |
| TITaylortec INC - Hammond | Hammond | — | ◇ UNVERIFIED |
| TLTdc LLC - Westlake Plant | Westlake | — | ◇ UNVERIFIED |
| TMTerra Mississippi Nitrogen INC. | Donaldsonville | — | ◇ UNVERIFIED |
| TMTerra Mississippi Nitrogen (melamine Facility) | Donaldsonville | — | ◇ UNVERIFIED |
| TCTetra Chemicals | Westlake | — | ◇ UNVERIFIED |
| VBVirdia B2x LLC - Raceland Plant | Raceland | — | ◇ UNVERIFIED |
| WCWaterbury Cos INC | Independence | — | ◇ UNVERIFIED |
| WFWestwego Facility | Westwego | — | ◇ UNVERIFIED |
| XIX-chem INC | Harahan | — | ◇ UNVERIFIED |
| ZIZeneca INC. | Saint Gabriel | — | ◇ UNVERIFIED |
| ASAdvancion - Sterlington, LA | Sterlington | 100–499 | ◐ LIKELY ACTIVE |
| ALAir Liquide | Hahnville | 1–19 | ◐ LIKELY ACTIVE |
| ALAir Liquide Large Industries Geismar ASU/Cogen | Geismar | 20–99 | ◐ LIKELY ACTIVE |
| APAir Products and Chemicals Inc.- New Orleans Terminal | New Orleans | 20–99 | ◐ LIKELY ACTIVE |
| ASArkema St. Charles | Hahnville | 20–99 | ◐ LIKELY ACTIVE |
| ARArq (Red River) Solutions LLC. | Coushatta | 100–499 | ◐ LIKELY ACTIVE |
| ADAtlantic Dry Ice - NOLA | Houma | 1–19 | ◐ LIKELY ACTIVE |
| ADAurorium - Denham Springs | Denham Springs | 20–99 | ◐ LIKELY ACTIVE |
| ASAuto-Chlor Services #02 | Baton Rouge | 20–99 | ◐ LIKELY ACTIVE |
| ASAuto-chlor Services LLC | New Orleans | — | ◐ LIKELY ACTIVE |
| BBasf | Geismar | 500+ | ◐ LIKELY ACTIVE |
| BPBastrop Plant | Bastrop | 20–99 | ◐ LIKELY ACTIVE |
| BRBaton Rouge, LA (Animal Health) Facility | Baton Rouge | 20–99 | ◐ LIKELY ACTIVE |
| BCBelle Chasse Facility | Belle Chasse | 20–99 | ◐ LIKELY ACTIVE |
| BLBio Lab, Inc | Westlake | 100–499 | ◐ LIKELY ACTIVE |
| BCBirla Carbon | Centerville | 100–499 | ◐ LIKELY ACTIVE |
| BCBlue Cube - Plaquemine Operations | Plaquemine | 100–499 | ◐ LIKELY ACTIVE |
| CCCabot Corporation - Jeanerette | Jeanerette | 1–19 | ◐ LIKELY ACTIVE |
| CMCarboline Manufacturing Lake Charles | Lake Charles | 20–99 | ◐ LIKELY ACTIVE |
| CICF Industries East Point LLC | Waggaman | 20–99 | ◐ LIKELY ACTIVE |
| CLCharm Louisiana LLC | Saint Landry | 1–19 | ◐ LIKELY ACTIVE |
| CConvent | Convent | 1–19 | ◐ LIKELY ACTIVE |
| CVCremer Volunteer Pastilles | Lake Charles | 20–99 | ◐ LIKELY ACTIVE |
| CSCrowfoot Supply Company LLC. | Natchitoches | 1–19 | ◐ LIKELY ACTIVE |
