| OCOccidental Chemical Corporation Oxychem | New Johnsonville | TN | — | ◇ UNVERIFIED |
| OCOccidental Chemical CORP - Taft Plant | Hahnville | LA | — | ◇ UNVERIFIED |
| OBOld Bridge Chemiacls INC | Old Bridge | NJ | — | ◇ UNVERIFIED |
| OCOlin Chlor Alkali Products | Niagara Falls | NY | — | ◇ UNVERIFIED |
| OOOmni Oxide Indiana Oxide | Brazil | IN | — | ◇ UNVERIFIED |
| PGPaducah Gaseous Diffusion Plant | Paducah | KY | — | ◇ UNVERIFIED |
| PCPalm Commodities International | La Vergne | TN | — | ◇ UNVERIFIED |
| PNPcs Nitrogen Fertilizer LP - Geismar Agricultural Nitrogen & Phosphate Plant | Geismar | LA | — | ◇ UNVERIFIED |
| PSPeach State Labs, LLC | Rome | GA | — | ◇ UNVERIFIED |
| PCPeninsula Copper Industries INC | Hubbell | MI | — | ◇ UNVERIFIED |
| PMPeterson Manufacturing and Engineering Facility | Fort Smith | AR | — | ◇ UNVERIFIED |
| PAPioneer Americas LLC D/b/a/ Olin Chlor Alkali | Saint Gabriel | LA | — | ◇ UNVERIFIED |
| PAPioneer Americas LLC Dba Olin Chlor Alkali Products | Henderson | NV | — | ◇ UNVERIFIED |
| PAPioneer Americas LLC (dba Olin Chlor Alkali Products Sfs) | Santa Fe Springs | CA | — | ◇ UNVERIFIED |
| PPowerlab | Terrell | TX | — | ◇ UNVERIFIED |
| PSPraxair Specialty Ceramics | Woodinville | WA | — | ◇ UNVERIFIED |
| PMPrince Minerals LLC | Milwaukee | WI | — | ◇ UNVERIFIED |
| PCPvs Chemical, INC. | Chicago | IL | — | ◇ UNVERIFIED |
| PCPvs Chemicals Formerly Dpc Enterprises, L.p. | Mobile | AL | — | ◇ UNVERIFIED |
| PSPvs Steel Services INC | Burns Harbor | IN | — | ◇ UNVERIFIED |
| PTPvs Tech INC | Detroit | MI | — | ◇ UNVERIFIED |
| PTPvs Technologies, INC. (augusta) | Augusta | GA | — | ◇ UNVERIFIED |
| RSResin Solutions, LLC | Chatom | AL | — | ◇ UNVERIFIED |
| RIRhodia INC. - Dominguez Plant | Carson | CA | — | ◇ UNVERIFIED |
| RJR J Marshall CO | Erie | MI | — | ◇ UNVERIFIED |
| RLRockwood Lithium INC | Kings Mountain | NC | — | ◇ UNVERIFIED |
| RLRockwood Lithium INC | Silverpeak | NV | — | ◇ UNVERIFIED |
| RMRoyal Metal Powders, INC. | Maryville | TN | — | ◇ UNVERIFIED |
| RLRuveon LLC | Soda Springs | ID | — | ◇ UNVERIFIED |
| SCSachs Chemical, INC. | Caguas | PR | — | ◇ UNVERIFIED |
| SDScientific Design CO INC | Little Ferry | NJ | — | ◇ UNVERIFIED |
| SISeeler Industries INC | Joliet | IL | — | ◇ UNVERIFIED |
| SGSeparations Group Grace Vydac | Hesperia | CA | — | ◇ UNVERIFIED |
| SCShell Catalysts and Technologies L.p. | Port Allen | LA | — | ◇ UNVERIFIED |
| SMShepherd Middletown Company | Middletown | OH | — | ◇ UNVERIFIED |
| SRSid Richardson Carbon CO | Borger | TX | — | ◇ UNVERIFIED |
| SISolutia INC Krummrich Il (part) | Sauget | IL | — | ◇ UNVERIFIED |
| SUSolvay USA INC | Cincinnati | OH | — | ◇ UNVERIFIED |
| SUSolvay USA INC | Martinez | CA | — | ◇ UNVERIFIED |
| SUSolvay USA Inc.-silver Bow Plant | Silver Bow | MT | — | ◇ UNVERIFIED |
 Southern Ionics INC | Sulphur | LA | — | ◇ UNVERIFIED |
 Southern States Phosphate & Fe Rtilizer CO | Savannah | GA | — | ◇ UNVERIFIED |
| SCSpecialty Chemical Systems, INC | Pottstown | PA | — | ◇ UNVERIFIED |
| SMSpecialty Minerals Dolomite Plant | Canaan | CT | — | ◇ UNVERIFIED |
| SCSud-chemie Chemical Plant | Louisville | KY | — | ◇ UNVERIFIED |
| SLSulfco, LLC | Savannah | GA | — | ◇ UNVERIFIED |
| SSSyensqo Specialty Polymers USA LLC | Marietta | OH | — | ◇ UNVERIFIED |
 Syngenta Crop Protection, LLC. - St Gabriel Plant | Saint Gabriel | LA | — | ◇ UNVERIFIED |
| TLTate & Lyle Sucralose INC | Mc Intosh | AL | — | ◇ UNVERIFIED |
| TLTdc Llc-corpus Christi Plant | Corpus Christi | TX | — | ◇ UNVERIFIED |
| TKTessenderlo Kerley INC | Coffeyville | KS | — | ◇ UNVERIFIED |
| TKTessenderlo Kerley, INC. | Hanford | CA | — | ◇ UNVERIFIED |
| TTTetra Technologies - Chemical Division | West Memphis | AR | — | ◇ UNVERIFIED |
| TCThatcher Company of North Dakota INC | Glendive | MT | — | ◇ UNVERIFIED |
| TDThe Dow Chemical CO - Louisiana Operations | Plaquemine | LA | — | ◇ UNVERIFIED |
| TDThe Dow Chemical Company- Ludington, Mi Plant | Ludington | MI | — | ◇ UNVERIFIED |
| TETherm-o-rock East INC | Donora | PA | — | ◇ UNVERIFIED |
| TWThe Whitaker Company | Spartanburg | SC | — | ◇ UNVERIFIED |
| TCThird Coast Terminals | Pearland | TX | — | ◇ UNVERIFIED |
| TFTitan Florida LLC | Medley | FL | — | ◇ UNVERIFIED |
| TCTransene Company Oakland | Oakland | CA | — | ◇ UNVERIFIED |
| UUUnivar USA INC - Bunola Facility | Bunola | PA | — | ◇ UNVERIFIED |
| UTUnivation Technologies LLC - Catalyst Plant | South Charleston | WV | — | ◇ UNVERIFIED |
| ULUop LLC - Baton Rouge Plant | Baton Rouge | LA | — | ◇ UNVERIFIED |
| ULUop LLC - Uop Shreveport Plant | Shreveport | LA | — | ◇ UNVERIFIED |
| USU. S. Amines - Bucks Plant | Axis | AL | — | ◇ UNVERIFIED |
| UBUS Borax INC | Wilmington | CA | — | ◇ UNVERIFIED |
| UDUS Doe Portsmouth Gaseous Diffusion Plant - Bwcs Duf6 | Piketon | OH | — | ◇ UNVERIFIED |
| UDUS Doe Savannah River Site | Aiken | SC | — | ◇ UNVERIFIED |
| UMUS Magnesium Plant | Tooele | UT | — | ◇ UNVERIFIED |
| VIValenite INC - Die & Wear - Walmet | West Branch | MI | — | ◇ UNVERIFIED |
| VCVeckridge Chemical | Kearny | NJ | — | ◇ UNVERIFIED |
| VBVeolia Borderland Plant | El Paso | TX | — | ◇ UNVERIFIED |
| VNVeolia North America Regeneration Services | Linden | NJ | — | ◇ UNVERIFIED |
| VNVeolia North America Regeneration Services, LLC (1431350817) | North Bend | OH | — | ◇ UNVERIFIED |
| VRVeolia - Red Lion Plant | New Castle | DE | — | ◇ UNVERIFIED |
| VDVertellus Dwg LLC | Delaware Water Gap | PA | — | ◇ UNVERIFIED |
| VVertex | Camanche | IA | — | ◇ UNVERIFIED |
| VMVibrantz Minerals | Houston | TX | — | ◇ UNVERIFIED |
| VTVibrantz Technologies | Curtis Bay | MD | — | ◇ UNVERIFIED |
| VTVibrantz Technologies (1318170235) | Cleveland | OH | — | ◇ UNVERIFIED |
| VCVwr Chemicals LLC | Aurora | OH | — | ◇ UNVERIFIED |
| WPWacker Polysilicon North America LLC | Charleston | TN | — | ◇ UNVERIFIED |
| WTWaters Technology Corporation | Taunton | MA | — | ◇ UNVERIFIED |
| WEWestinghouse Electric Company Llc/columbia Fuel Fabrication Facility | Hopkins | SC | — | ◇ UNVERIFIED |
| WUWestlake US 2 LLC | Longview | WA | — | ◇ UNVERIFIED |
| WLWilbara LLC | Wilmington | NC | — | ◇ UNVERIFIED |
| WFWoodward Faclty | Woodward | OK | — | ◇ UNVERIFIED |
| WIWoodward Iodine Corporation | Woodward | OK | — | ◇ UNVERIFIED |
| WRW. R. Grace & CO. - Conn. | Chattanooga | TN | — | ◇ UNVERIFIED |
| WGW.r. Grace & CO. - Conn. Grace Construction Products | Augusta | GA | — | ◇ UNVERIFIED |
| WRW R Grace - Lake Charles Facility | Sulphur | LA | — | ◇ UNVERIFIED |
| ZKZep Kingman | Kingman | AZ | — | ◇ UNVERIFIED |
| AMAdvanced Materials and Catalysts LLC R&D | Conshohocken | PA | 20–99 | ◐ LIKELY ACTIVE |
| ASAdvanced Specialty Gases, LLC | Reno | NV | — | ◐ LIKELY ACTIVE |
| AUAlbemarle U.S. Inc | Kings Mountain | NC | 100–499 | ◐ LIKELY ACTIVE |
| AUAllied Universal Corporation - Brunswick, GA | Brunswick | GA | 20–99 | ◐ LIKELY ACTIVE |
| AUAllied Universal Corporation - Ellisville MS | Ellisville | MS | 1–19 | ◐ LIKELY ACTIVE |
| AUAllied Universal Corporation - Fort Pierce, FL | Fort Pierce | FL | 20–99 | ◐ LIKELY ACTIVE |
| AUAllied Universal Corporation - Palmetto FL | Palmetto | FL | 20–99 | ◐ LIKELY ACTIVE |
