Southern Ionics INC | Chickasaw | AL | — | ◐ LIKELY ACTIVE |
Southern Ionics Incorporated | Tuscaloosa | AL | — | ◐ LIKELY ACTIVE |
Southern Ionics Incorporated Tuscaloosa Facility | Tuscaloosa | AL | — | ◐ LIKELY ACTIVE |
| SCSpecialty Chemical | Quincy | FL | 20–99 | ◐ LIKELY ACTIVE |
| SPSpecialty Products Us, LLC - Polyox Plant | Institute | WV | — | ◐ LIKELY ACTIVE |
| SBSpectrum Brand Pets, LLC | Blacksburg | VA | — | ◐ LIKELY ACTIVE |
| SSSumika Semiconductor Materials Texas | Baytown | TX | 20–99 | ◐ LIKELY ACTIVE |
| SCSummit Custom Spray Drying INC @ Flemington Ind Pk | Flemington | NJ | — | ◐ LIKELY ACTIVE |
| SPSunedison Polysilicon Facility | Pasadena | TX | — | ◐ LIKELY ACTIVE |
| SPSungro Products LLC | Los Angeles | CA | — | ◐ LIKELY ACTIVE |
| SASunlit Arizona LLC | Phoenix | AZ | 20–99 | ◐ LIKELY ACTIVE |
| TKTessenderlo Kerley | Dumas | TX | — | ◐ LIKELY ACTIVE |
| TRTextile Rubber & Chemical CO | Dalton | GA | — | ◐ LIKELY ACTIVE |
| TTexwipe | Kernersville | NC | — | ◐ LIKELY ACTIVE |
| TCThe Chemours Company FC, LLC - La Porte | La Porte | TX | 100–499 | ◐ LIKELY ACTIVE |
| TLThe Lubrizol Corporation | Painesville | OH | — | ◐ LIKELY ACTIVE |
| TOTherm O Rock INC - New Eagle Plant | New Eagle | PA | — | ◐ LIKELY ACTIVE |
| TThetford/norcold-dexter | Dexter | MI | — | ◐ LIKELY ACTIVE |
| TCTrans Carolina Products, LLC | Hamlet | NC | — | ◐ LIKELY ACTIVE |
| TLTronox LLC | Hamilton | MS | — | ◐ LIKELY ACTIVE |
| ULUct, LLC | Lewistown | PA | — | ◐ LIKELY ACTIVE |
| UCUnion Carbide Corporation | Woodbine | GA | — | ◐ LIKELY ACTIVE |
| UCUnion Carbide Corporation-institute | Institute | WV | 20–99 | ◐ LIKELY ACTIVE |
| UAU.s. Army Redstone Arsenal | Redstone Arsenal | AL | — | ◐ LIKELY ACTIVE |
| UEUS Enrichment CORP Paducah Gaseous Diffusion Plant | Paducah | KY | — | ◐ LIKELY ACTIVE |
| VCVanderbilt Chemicals, LLC - Murray, KY | Murray | KY | 20–99 | ◐ LIKELY ACTIVE |
| VCVenator Chemicals LLC | Harrisburg | NC | — | ◐ LIKELY ACTIVE |
| VWVeolia Water North America Operating Services LLC - Chalmette Facility | Chalmette | LA | — | ◐ LIKELY ACTIVE |
| WVWabash Valley Resources LLC | West Terre Haute | IN | — | ◐ LIKELY ACTIVE |
| WHW.a. Hammond Drierite Co, Limited | Xenia | OH | — | ◐ LIKELY ACTIVE |
| WWWalworth Woodcraft INC | Walworth | WI | — | ◐ LIKELY ACTIVE |
| WEWater Engineering, INC. | Mead | NE | — | ◐ LIKELY ACTIVE |
| WCWestlake Chemicals and Vinyls, LLC | Plaquemine | LA | 100–499 | ◐ LIKELY ACTIVE |
| WFWholesome Foods INC - Edinburg | Edinburg | VA | — | ◐ LIKELY ACTIVE |
| WMWillert Manufacturing Company, LLC | Douglassville | PA | 20–99 | ◐ LIKELY ACTIVE |
| WLWolf Lake Terminals, INC. | Hammond | IN | — | ◐ LIKELY ACTIVE |
| WIWoodward Iodine Corporation | Woodward | OK | 20–99 | ◐ LIKELY ACTIVE |
| WGW.r. Grace | East Chicago | IN | — | ◐ LIKELY ACTIVE |
| WGWR Grace - FCMS Tyrone Site | Tyrone | PA | 100–499 | ◐ LIKELY ACTIVE |
| 1W100 Waterfront Street | New Haven | CT | — | ◐ LIKELY ACTIVE |
| 3T3m Technical Ceramics Quapaw, LLC | Quapaw | OK | — | ◐ LIKELY ACTIVE |
| ARAdvanced Research Chemicals INC. | Catoosa | OK | — | ◐ LIKELY ACTIVE |
| AAdvansix | Philadelphia | PA | — | ◐ LIKELY ACTIVE |
| ADAes Drilling Fluids Clinton | Clinton | OK | — | ◐ LIKELY ACTIVE |
| APAir Products Manufacturing LLC | Paramount | CA | — | ◐ LIKELY ACTIVE |
| AHAjinomoto Health & Nutrition North America, INC. | Eddyville | IA | — | ◐ LIKELY ACTIVE |
| APAli Pharmaceutical Mfg LLC | Omaha | NE | — | ◐ LIKELY ACTIVE |
| AEAllegheny Energy Pleasants Power Station | Belmont | WV | — | ◐ LIKELY ACTIVE |
| ASAltivia Services, Llc, Institute Plant | Dunbar | WV | — | ◐ LIKELY ACTIVE |
| ACAmerchol CORP | Greensburg | LA | — | ◐ LIKELY ACTIVE |