| WEWestlake Epoxy | Lakeland | FL | 20–99 | ◐ LIKELY ACTIVE |
| WRWestlake Royal Building Products Bristol | Bristol | TN | 100–499 | ◐ LIKELY ACTIVE |
| WRWestlake Royal Building Products Marion | Marion | VA | 100–499 | ◐ LIKELY ACTIVE |
| WGWR Grace - FCMS Tyrone Site | Tyrone | PA | 100–499 | ◐ LIKELY ACTIVE |
| FPFresno Precision Plastics, INC. | Clovis | CA | — | ◐ LIKELY ACTIVE |
| PBPierce Biotechnology INC | Rockford | IL | — | ◐ LIKELY ACTIVE |
| APAccella Polyurethane Systems | Cartersville | GA | — | ◇ UNVERIFIED |
| APAccella Polyurethane Systems LLC | Rancho Cucamonga | CA | — | ◇ UNVERIFIED |
| AIAc&s INC | Nitro | WV | — | ◇ UNVERIFIED |
| APAdell Polymers, INC. | Petersburg | WV | — | ◇ UNVERIFIED |
| APAdhesive Polymers Plant | Freeport | TX | — | ◇ UNVERIFIED |
| AUAdjuvants Unlimited LLC | Tulsa | OK | — | ◇ UNVERIFIED |
| ASAdm Southport | Southport | NC | — | ◇ UNVERIFIED |
| ACAdvance Coatings Company | Westminster | MA | — | ◇ UNVERIFIED |
| AAAdvanced Architectural Products | Hamilton | MI | — | ◇ UNVERIFIED |
| ACAfton Chemical Additives Port Arthur Facility | Port Arthur | TX | — | ◇ UNVERIFIED |
| ACAgilyx Corporation | Tigard | OR | — | ◇ UNVERIFIED |
| ANAkzo Nobel Coatings INC | Columbus | OH | — | ◇ UNVERIFIED |
| ANAkzo Nobel Coatings INC. | Huron | OH | — | ◇ UNVERIFIED |
| ACAldrich Chemical Company, Inc.-teutonia | Milwaukee | WI | — | ◇ UNVERIFIED |
| ATAllcoat Technology | Wilmington | MA | — | ◇ UNVERIFIED |
| AIAllen Industries LLC | Sedalia | MO | — | ◇ UNVERIFIED |
| AUAllnex USA INC | East Saint Louis | IL | — | ◇ UNVERIFIED |
| AGAlpha General Services, LLC | Sebring | FL | — | ◇ UNVERIFIED |
| ARAlpha Resins, LLC | Detroit | MI | — | ◇ UNVERIFIED |
| APAlta Performance Materials Fka Ineos | Bartow | FL | — | ◇ UNVERIFIED |
| APAlta Performance Materials Us, LLC. | Fort Smith | AR | — | ◇ UNVERIFIED |
| ALAltugulas LLC | Louisville | KY | — | ◇ UNVERIFIED |
| ACAmbit Chemical Technologies | Gulfport | MS | — | ◇ UNVERIFIED |
| ASAmericas Styrenics Allyns Point Plant | Gales Ferry | CT | — | ◇ UNVERIFIED |
| ASAmericas Styrenics LLC | Marietta | OH | — | ◇ UNVERIFIED |
| AIAmerichem INC Cnc | Concord | NC | — | ◇ UNVERIFIED |
| AIAmerichem INC. - Liberty Plant | Liberty | NC | — | ◇ UNVERIFIED |
| APAmetek/westchester Plastics Div | Nesquehoning | PA | — | ◇ UNVERIFIED |
| ACAmfine Chemical CORP | Hopkinsville | KY | — | ◇ UNVERIFIED |
| ACAmpacet CORP - Plastic Processing Plant | Deridder | LA | — | ◇ UNVERIFIED |
| ASAm Stabilizers | Franklin | PA | — | ◇ UNVERIFIED |
| ALAmt Labs INC | North Salt Lake | UT | — | ◇ UNVERIFIED |
| ACAmvac Chemical Corporation, Axis Plant | Axis | AL | — | ◇ UNVERIFIED |
| APAnchor Packaging-marmaduke | Marmaduke | AR | — | ◇ UNVERIFIED |
| ALAoc, LLC | Perris | CA | — | ◇ UNVERIFIED |
| ALAoc L L C Tennessee Plant | Collierville | TN | — | ◇ UNVERIFIED |
| ATAoc Trusted Solutions | Valparaiso | IN | — | ◇ UNVERIFIED |
| APApg Polytech, Llc, Apple Grove Plant | Apple Grove | WV | — | ◇ UNVERIFIED |
| ACApollo Chemical | Burlington | NC | — | ◇ UNVERIFIED |
| AMApplied Material Solutions, INC. | Burlington | WI | — | ◇ UNVERIFIED |
| AIAprm INC | Houston | TX | — | ◇ UNVERIFIED |
| ACAqua Clean Environmental of Virginia | Richmond | VA | — | ◇ UNVERIFIED |
| ACArizona Chemical Company, LLC | Dover | OH | — | ◇ UNVERIFIED |
| ACArkema Coating Resins | Alsip | IL | — | ◇ UNVERIFIED |