| WFWholesome Foods INC - Edinburg | Edinburg | VA | — | ◐ LIKELY ACTIVE |
| WMWillert Manufacturing Company, LLC | Douglassville | PA | 20–99 | ◐ 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 |
| 2U2007 Union Carbide Corporation Tco | Texas City | TX | — | ◇ UNVERIFIED |
| AIAc&s INC | Nitro | WV | — | ◇ UNVERIFIED |
| ASAdm Southport | Southport | NC | — | ◇ UNVERIFIED |
| ARAdvance Research Chemicals INC | Catoosa | OK | — | ◇ UNVERIFIED |
| AIAdvansix INC | Philadelphia | PA | — | ◇ 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 |
| APAg Processing, INC. Algona Methyl Ester Processing | Algona | IA | — | ◇ 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 Polymer Chemicals | Pasadena | TX | — | ◇ UNVERIFIED |
| ACAlbemarle Corporation | Orangeburg | SC | — | ◇ 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 |
| ACAlex C Fergusson INC | Chambersburg | PA | — | ◇ 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 |
| ACAlto Columbia, LLC | Boardman | OR | — | ◇ UNVERIFIED |
| ACAmbit Chemical Technologies | Gulfport | MS | — | ◇ UNVERIFIED |
| AWAmerican Wax CO | Long Island City | NY | — | ◇ UNVERIFIED |
| ASAmericas Styrenics LLC - St James Plant | Saint James | LA | — | ◇ UNVERIFIED |
| AIAmerichem INC Scp | Cuyahoga Falls | OH | — | ◇ UNVERIFIED |
| ASAmerichem Sales CORP | Mason | MI | — | ◇ UNVERIFIED |
| AGAmes Goldsmith CORP | Glens Falls | NY | — | ◇ UNVERIFIED |
| ACAmfine Chemical CORP | Hopkinsville | KY | — | ◇ UNVERIFIED |
| ATAmg Titanium LLC | New Castle | PA | — | ◇ UNVERIFIED |
| AMAmrep Manufacturing Company LLC | Ontario | CA | — | ◇ UNVERIFIED |
| ASAm Stabilizers | Franklin | PA | — | ◇ UNVERIFIED |
| ALAmt Labs INC | North Salt Lake | UT | — | ◇ UNVERIFIED |
| ACAmvac Chemical Corporation, Axis Plant | Axis | AL | — | ◇ UNVERIFIED |
| AAAndrea Aromatics INC | Trenton | NJ | — | ◇ UNVERIFIED |
| ACApollo Chemical | Burlington | NC | — | ◇ UNVERIFIED |
| AMApplied Material Solutions, INC. | Burlington | WI | — | ◇ UNVERIFIED |
| ACAqua Clean Environmental of Virginia | Richmond | VA | — | ◇ UNVERIFIED |
| AUArchroma US INC Martin Plant | Martin | SC | — | ◇ UNVERIFIED |
