| WPWestern Plastics | Portland | TN | 20–99 | ◐ LIKELY ACTIVE |
| WCWestlake Chemicals and Vinyls, LLC | Plaquemine | LA | 100–499 | ◐ LIKELY ACTIVE |
| 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 |
| WIWoodward Iodine Corporation | Woodward | OK | 20–99 | ◐ LIKELY ACTIVE |
| ZZeochem | Louisville | KY | 20–99 | ◐ LIKELY ACTIVE |
| 3T3m Technical Ceramics Quapaw, LLC | Quapaw | OK | — | ◐ LIKELY ACTIVE |
| FPFresno Precision Plastics, INC. | Clovis | CA | — | ◐ LIKELY ACTIVE |
| 2L220 Laboratories, INC. | Riverside | CA | — | ◇ UNVERIFIED |
| ALAbf Labs, INC. | Waukegan | IL | — | ◇ UNVERIFIED |
| APAccella Polyurethane Systems | Cartersville | GA | — | ◇ UNVERIFIED |
| APAccella Polyurethane Systems LLC | Rancho Cucamonga | CA | — | ◇ UNVERIFIED |
| APAdell Polymers, INC. | Petersburg | WV | — | ◇ UNVERIFIED |
| APAdhesive Polymers Plant | Freeport | TX | — | ◇ UNVERIFIED |
| ACAdvance Coatings Company | Westminster | MA | — | ◇ UNVERIFIED |
| AAAdvanced Architectural Products | Hamilton | MI | — | ◇ UNVERIFIED |
| ARAdvance Research Chemicals INC | Catoosa | OK | — | ◇ UNVERIFIED |
| ARAerc Recycling Solutions a Clean Earth CO | Allentown | PA | — | ◇ UNVERIFIED |
| AFAgrifos Fertilizer L.l.c. | Pasadena | TX | — | ◇ UNVERIFIED |
 Airgas Specialty Products - Granite City | Granite City | IL | — | ◇ UNVERIFIED |
| ANAjay N a LLC | Powder Springs | GA | — | ◇ UNVERIFIED |
| ANAkzo Nobel Coatings INC | Columbus | OH | — | ◇ UNVERIFIED |
| ANAkzo Nobel Coatings INC. | Huron | OH | — | ◇ UNVERIFIED |
| ACAlbemarle Corporation-south Plant | Magnolia | AR | — | ◇ UNVERIFIED |
| ACAlbemarle Corporation - West Plant | Magnolia | AR | — | ◇ UNVERIFIED |
| AAlchem | Mentor | OH | — | ◇ UNVERIFIED |
| AWAlcoa World Chemicals | Bauxite | AR | — | ◇ UNVERIFIED |
| ACAldrich Chemical CO LLC - Sheboygan Falls Facility | Sheboygan Falls | WI | — | ◇ UNVERIFIED |
| ACAldrich Chemical Company, Inc.-teutonia | Milwaukee | WI | — | ◇ UNVERIFIED |
| ATAllcoat Technology | Wilmington | MA | — | ◇ UNVERIFIED |
| AIAllen Industries LLC | Sedalia | MO | — | ◇ UNVERIFIED |
| ANAllied New Technologies 2, INC Plant | Palmetto | FL | — | ◇ UNVERIFIED |
| ANAllied New Technologies INC | Port Saint Lucie | FL | — | ◇ UNVERIFIED |
| AUAllied Universal Corporation | Brunswick | GA | — | ◇ UNVERIFIED |
| AUAllied Universal Corporation | Ellisville | MS | — | ◇ 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 |
| 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 |
| AIAmerichem INC Scp | Cuyahoga Falls | OH | — | ◇ UNVERIFIED |
| AGAmes Goldsmith CORP | Glens Falls | NY | — | ◇ UNVERIFIED |
| APAmetek/westchester Plastics Div | Nesquehoning | PA | — | ◇ UNVERIFIED |
| ATAmg Titanium LLC | New Castle | PA | — | ◇ UNVERIFIED |
| ACAmpacet CORP - Plastic Processing Plant | Deridder | LA | — | ◇ UNVERIFIED |
| ASAm Stabilizers | Franklin | PA | — | ◇ 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 |
| AIAprm INC | Houston | TX | — | ◇ UNVERIFIED |
| ANAreva Np INC | Richland | WA | — | ◇ UNVERIFIED |
| ALArichem LLC | Ariton | AL | — | ◇ UNVERIFIED |
| ACArkema Coating Resins | Alsip | IL | — | ◇ UNVERIFIED |
| ACArkema Coating Resins | Kansas City | MO | — | ◇ UNVERIFIED |
| AIArkema INC | Grand Rapids | MI | — | ◇ UNVERIFIED |
| AIArkema INC | Torrance | CA | — | ◇ UNVERIFIED |
| AIArkema INC. | Bristol | PA | — | ◇ UNVERIFIED |
| AIArkema INC - Arkema Emulsion Systems | Hahnville | LA | — | ◇ UNVERIFIED |
| AIArkema INC - Mobile Facility | Axis | AL | — | ◇ UNVERIFIED |
| AEArnette Enterprises INC | Richmond | MO | — | ◇ UNVERIFIED |
| APArnette Polymers LLC | Richmond | MO | — | ◇ UNVERIFIED |
 Asahi Kasei Plastics North America, INC. (n6707) | Fowlerville | MI | — | ◇ UNVERIFIED |
| APAscend Performance Materials Operations LLC | Greenwood | SC | — | ◇ UNVERIFIED |
| ASAscensus Specialty Chemicals | Elma | WA | — | ◇ UNVERIFIED |
| ASA Schulman INC | Bellevue | OH | — | ◇ UNVERIFIED |
| ASA Schulman Incorporated Dispersions Division | Orange | TX | — | ◇ UNVERIFIED |
| ASAshland Specialty Chemical CO | Jacksonville | AR | — | ◇ UNVERIFIED |
| ASAshland Specialty Chemical CO. -calumet City, Il | Calumet City | IL | — | ◇ UNVERIFIED |
| ASAshland Specialty Chemical Company | Commerce | CA | — | ◇ UNVERIFIED |
| ASAshland Specialty Chemical Co.- Neville Island, Pa | Pittsburgh | PA | — | ◇ UNVERIFIED |
| ACAshta Chemicals, INC. | Ashtabula | OH | — | ◇ UNVERIFIED |
| ACAsk Chemicals LLC | Cleveland | OH | — | ◇ UNVERIFIED |
| AAAspen Aerogels Rhode Island, LLC | East Providence | RI | — | ◇ UNVERIFIED |
| ARAtlas Roofing Corporation | Northglenn | CO | — | ◇ UNVERIFIED |
| APAuriga Polymers INC | Spartanburg | SC | — | ◇ UNVERIFIED |
| ACAveda CORP | Blaine | MN | — | ◇ UNVERIFIED |
| ACAxalta Coating Systems USA LLC | Front Royal | VA | — | ◇ UNVERIFIED |
| ANAxens North America, INC | Belmont | WV | — | ◇ UNVERIFIED |
| ANAxson N a | Eaton Rapids | MI | — | ◇ UNVERIFIED |
| BUBaerlocher USA LLC | Dover | OH | — | ◇ UNVERIFIED |
| BPBaker Petrolite Corporation | California | CA | — | ◇ UNVERIFIED |
| BCBasf CORP | Monaca | PA | — | ◇ UNVERIFIED |
| BCBasf CORP | Setauket | NY | — | ◇ UNVERIFIED |
| BCBasf Corporate/clemson Site | Central | SC | — | ◇ UNVERIFIED |
| BCBasf Corporation | Greenville | OH | — | ◇ UNVERIFIED |
| BCBasf Corporation | Chattanooga | TN | — | ◇ UNVERIFIED |
| BCBasf Corporation | Washington | NJ | — | ◇ UNVERIFIED |
| BCBasf Corporation - Savannah Operations | Savannah | GA | — | ◇ UNVERIFIED |
| BCBasf CORP - Vidalia Works | Vidalia | LA | — | ◇ UNVERIFIED |
| BDBasf Dnt Plant | Geismar | LA | — | ◇ UNVERIFIED |
| BHBasf Houston Polyurethane | Houston | TX | — | ◇ UNVERIFIED |
| BMBasf Mobile Emissions Catalysts LLC. - Huntsville | Huntsville | AL | — | ◇ UNVERIFIED |
