| WCWestlake Chemicals and Vinyls, LLC | Plaquemine | LA | 100–499 | ◐ LIKELY ACTIVE |
| WIWoodward Iodine Corporation | Woodward | OK | 20–99 | ◐ LIKELY ACTIVE |
| WGWR Grace - FCMS Tyrone Site | Tyrone | PA | 100–499 | ◐ LIKELY ACTIVE |
| ZZeochem | Louisville | KY | 20–99 | ◐ LIKELY ACTIVE |
| 3T3m Technical Ceramics Quapaw, LLC | Quapaw | OK | — | ◐ LIKELY ACTIVE |
| PBPierce Biotechnology INC | Rockford | IL | — | ◐ LIKELY ACTIVE |
| AIAc&s INC | Nitro | WV | — | ◇ UNVERIFIED |
| ASAdm Southport | Southport | NC | — | ◇ UNVERIFIED |
| ARAdvance Research Chemicals INC | Catoosa | OK | — | ◇ UNVERIFIED |
| ARAerc Recycling Solutions a Clean Earth CO | Allentown | PA | — | ◇ UNVERIFIED |
| ACAfton Chemical Additives Port Arthur Facility | Port Arthur | TX | — | ◇ UNVERIFIED |
| ACAgilyx Corporation | Tigard | OR | — | ◇ 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 |
| 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 |
| ANAllied New Technologies 2, INC Plant | Palmetto | FL | — | ◇ UNVERIFIED |
| ANAllied New Technologies INC | Port Saint Lucie | FL | — | ◇ UNVERIFIED |
| AUAllied Universal Corporation | Ellisville | MS | — | ◇ UNVERIFIED |
| AUAllied Universal Corporation | Brunswick | GA | — | ◇ UNVERIFIED |
| ACAmbit Chemical Technologies | Gulfport | MS | — | ◇ UNVERIFIED |
| AIAmerichem INC Scp | Cuyahoga Falls | OH | — | ◇ UNVERIFIED |
| AGAmes Goldsmith CORP | Glens Falls | NY | — | ◇ UNVERIFIED |
| ACAmfine Chemical CORP | Hopkinsville | KY | — | ◇ UNVERIFIED |
| ATAmg Titanium LLC | New Castle | PA | — | ◇ UNVERIFIED |
| ASAm Stabilizers | Franklin | PA | — | ◇ UNVERIFIED |
| ALAmt Labs INC | North Salt Lake | UT | — | ◇ UNVERIFIED |
| ACAmvac Chemical Corporation, Axis Plant | Axis | AL | — | ◇ UNVERIFIED |
| ACApollo Chemical | Burlington | NC | — | ◇ UNVERIFIED |
| AMApplied Material Solutions, INC. | Burlington | WI | — | ◇ UNVERIFIED |
| ACAqua Clean Environmental of Virginia | Richmond | VA | — | ◇ UNVERIFIED |
| ANAreva Np INC | Richland | WA | — | ◇ UNVERIFIED |
| ALArichem LLC | Ariton | AL | — | ◇ UNVERIFIED |
| ACArizona Chemical Company, LLC | Dover | OH | — | ◇ UNVERIFIED |
| AIArkema INC | Pasadena | TX | — | ◇ UNVERIFIED |
| AIArkema INC | Chatham | VA | — | ◇ UNVERIFIED |
| AIArkema INC | Courtland | VA | — | ◇ UNVERIFIED |
| AIArkema INC | Blooming Prairie | MN | — | ◇ UNVERIFIED |
| AIArkema INC | Piffard | NY | — | ◇ UNVERIFIED |
| AIArkema INC - Mobile Facility | Axis | AL | — | ◇ UNVERIFIED |
| ALArrowstar, LLC | Dalton | GA | — | ◇ UNVERIFIED |
| ALArxada LLC | Williamsport | PA | — | ◇ UNVERIFIED |
| APAscend (decatur Plant) | Decatur | AL | — | ◇ UNVERIFIED |
| ASAscensus Specialty Chemicals | Elma | WA | — | ◇ UNVERIFIED |
| ASA Schulman Incorporated Dispersions Division | Orange | TX | — | ◇ UNVERIFIED |
| ACAshland Chemical Company | Savannah | GA | — | ◇ UNVERIFIED |
| ASAshland Specialty Ingredients (parlin Plant) | Parlin | NJ | — | ◇ UNVERIFIED |
| ACAshta Chemicals, INC. | Ashtabula | OH | — | ◇ UNVERIFIED |
| AAAspen Aerogels Rhode Island, LLC | East Providence | RI | — | ◇ UNVERIFIED |
| AIAtmi INC | Burnet | TX | — | ◇ UNVERIFIED |
| ANAxens North America, INC | Belmont | WV | — | ◇ UNVERIFIED |
| BUBaerlocher USA LLC | Dover | OH | — | ◇ UNVERIFIED |
| BCBakelite Chemicals LLC | Taylorsville | MS | — | ◇ UNVERIFIED |
| BCBakelite Chemicals LLC | Columbus | OH | — | ◇ UNVERIFIED |
| BCBakelite Chemicals Llc, Beaver Creek Plant | Grayling | MI | — | ◇ UNVERIFIED |
| BPBaker Petrolite Corporation | California | CA | — | ◇ UNVERIFIED |
| BCBasf CORP | Mc Intosh | AL | — | ◇ UNVERIFIED |
| BCBasf CORP - Geismar Site | Geismar | LA | — | ◇ UNVERIFIED |
| BCBasf Corporation - Savannah Operations | Savannah | GA | — | ◇ UNVERIFIED |
| BCBasf CORP - Vidalia Works | Vidalia | LA | — | ◇ UNVERIFIED |
| BDBasf Dnt Plant | Geismar | LA | — | ◇ UNVERIFIED |
| BMBasf Mobile Emissions Catalysts LLC. - Huntsville | Huntsville | AL | — | ◇ UNVERIFIED |
| BPBasf Performance Co-polymers LLC | Theodore | AL | — | ◇ UNVERIFIED |
| BTBasf Toda America LLC | Battle Creek | MI | — | ◇ UNVERIFIED |
| BCBayer Corporation, Bushy Park Plant | Goose Creek | SC | — | ◇ UNVERIFIED |
| BCBayer Cropscience LP | Muscatine | IA | — | ◇ UNVERIFIED |
| BIBcp Ingredients | Verona | MO | — | ◇ UNVERIFIED |
 Bedoukian Research, INC. | Danbury | CT | — | ◇ UNVERIFIED |
| BABelle Aire Creations | Round Lake Park | IL | — | ◇ UNVERIFIED |
| BCBercen Chemicals LLC | Denham Springs | LA | — | ◇ UNVERIFIED |
| BABethlehem Apparatus CO INC | Hellertown | PA | — | ◇ UNVERIFIED |
| BLBetz Laboratories, INC | Bakersfield | CA | — | ◇ UNVERIFIED |
| BABhs Acqusition INC | Nampa | ID | — | ◇ UNVERIFIED |
| BSBig Spring Carbon Black Plant | Big Spring | TX | — | ◇ UNVERIFIED |
| BIBimax INC | Glen Rock | PA | — | ◇ UNVERIFIED |
| BIBiolab INC | Westlake | LA | — | ◇ UNVERIFIED |
| BRBlue Ridge Solvents and Coatings Incorporated | Henry | VA | — | ◇ UNVERIFIED |
| BCBorden Chemical INC | Diboll | TX | — | ◇ UNVERIFIED |
| BCBorden Chemical, Inc., Sheboygan Plant | Sheboygan | WI | — | ◇ UNVERIFIED |
| BSBoulder Scientific CO - Mead Facility | Mead | CO | — | ◇ UNVERIFIED |
| BMBrenntag Mid-south, INC. | Orlando | FL | — | ◇ UNVERIFIED |
| BCBrite CO a & I Chemicals INC | Sandersville | GA | — | ◇ UNVERIFIED |
| BLBuckman Laboratories INC | Cadet | MO | — | ◇ UNVERIFIED |
| BLBuckman Labs INC | Memphis | TN | — | ◇ UNVERIFIED |
| CCCabot Corporation | Midland | MI | — | ◇ UNVERIFIED |
| CCCabot Corporation | Carrollton | KY | — | ◇ UNVERIFIED |
| CCCabot CORP Pampa Plant | Pampa | TX | — | ◇ UNVERIFIED |
| CCCabot CORP Pampa Plant | Pampa | TX | — | ◇ UNVERIFIED |
| CSCairo Sulphur Products | Cairo | OH | — | ◇ UNVERIFIED |
 Calgon Carbon CORP - Neville Island Plt | Pittsburgh | PA | — | ◇ UNVERIFIED |
| CCCarbonfree Chemicals | San Antonio | TX | — | ◇ UNVERIFIED |
| CCCarus Corporation Belmont Site | Belmont | NC | — | ◇ UNVERIFIED |
| CHCastle Hayne, Nc | Castle Hayne | NC | — | ◇ UNVERIFIED |
| CICaterpillar INC. | Boonville | MO | — | ◇ UNVERIFIED |
| CLCelanese LTD | Calvert City | KY | — | ◇ UNVERIFIED |
