| APApg Polytech LLC | Apple Grove | WV | Chemical Manufacturing325199 | 100-499 | ● ACTIVE |
| TCThe Chemours CO LLC - Belle Facility | Belle | WV | Chemical Manufacturing325110 | 100-499 | ● ACTIVE |
| TGTroy Group, Inc., Wheeling | Wheeling | WV | Chemical Manufacturing325510 | 100-499 | ◐ LIKELY ACTIVE |
| CWCelanese - Washington Works | Washington | WV | Chemical Manufacturing325211 | 100-499 | ◐ LIKELY ACTIVE |
| AMA&M Manufacturing Co | Martinsburg | WV | Chemical Manufacturing325998 | 100-499 | ◐ LIKELY ACTIVE |
| APAutomated Packaging Systems LLC of Sealed Air | Keyser | WV | Chemical Manufacturing325211 | 100-499 | ◐ LIKELY ACTIVE |
| CSCytec Solvay Group Willow Island Plant | Willow Island | WV | Chemical Manufacturing325199 | 100-499 | ◐ LIKELY ACTIVE |
| DUDelrin USA, LLC | Washington | WV | Chemical Manufacturing325211 | 100-499 | ◐ LIKELY ACTIVE |
| EUEcolab US20/21 | Martinsburg | WV | Chemical Manufacturing325611 | 100-499 | ◐ LIKELY ACTIVE |
| KMKingsford Mfg. | Piedmont | WV | Chemical Manufacturing325194 | 100-499 | ◐ LIKELY ACTIVE |
| SGSI Group, Inc. - Morgantown | Morgantown | WV | Chemical Manufacturing325199 | 100-499 | ◐ LIKELY ACTIVE |
| UCUnion Carbide Corp | South Charleston | WV | Chemical Manufacturing325199 | 100-499 | ◐ LIKELY ACTIVE |
| VPViatris (Mylan Pharmaceuticals) - Collins Ferry | Morgantown | WV | Chemical Manufacturing325412 | 100-499 | ◐ LIKELY ACTIVE |