 Southern Ionics INC. - Lake Charles Facility | Carlyss | LA | — | ◇ UNVERIFIED |
 Southern States Chemical | Wilmington | NC | — | ◇ UNVERIFIED |
| STSouth Texas Chlorine, INC. | Harlingen | TX | — | ◇ UNVERIFIED |
| SISozio INC. | Piscataway | NJ | — | ◇ UNVERIFIED |
| SISpace INC | Baton Rouge | LA | — | ◇ UNVERIFIED |
| SLSpartech LLC | Greenville | OH | — | ◇ UNVERIFIED |
| SPSpartech Plastics LLC | Muncie | IN | — | ◇ UNVERIFIED |
| SPSpartech Polycast Warehouse | Hackensack | NJ | — | ◇ UNVERIFIED |
| SPSpartech Polycom INC | Kearny | NJ | — | ◇ UNVERIFIED |
| SCSpaulding Composites CO | Dekalb | IL | — | ◇ UNVERIFIED |
| SMSpears Manufacturing Company | Sylmar | CA | — | ◇ UNVERIFIED |
| SCSpecialty Chemical Systems, INC | Pottstown | PA | — | ◇ UNVERIFIED |
| SMSpecialty Minerals INC | Plymouth | NC | — | ◇ UNVERIFIED |
| SMSpecialty Minerals INC | Jay | ME | — | ◇ UNVERIFIED |
| SMSpecialty Minerals INC | Wisconsin Rapids | WI | — | ◇ UNVERIFIED |
| SMSpecialty Minerals INC | Selma | AL | — | ◇ UNVERIFIED |
| SMSpecialty Minerals INC | Zachary | LA | — | ◇ UNVERIFIED |
| SMSpecialty Minerals Incorporated | Franklin | VA | — | ◇ UNVERIFIED |
| SMSpecialty Minerals Inc, Owner, and Specialty Minerals Mississippi Inc, Operator | Brookhaven | MS | — | ◇ UNVERIFIED |
| SPSpecialty Polymers | Leominster | MA | — | ◇ UNVERIFIED |
| SPSpecialty Products | Lakewood | WA | — | ◇ UNVERIFIED |
| SSta-care | Pardeeville | WI | — | ◇ UNVERIFIED |
 Starfire Systems INC | Schenectady | NY | — | ◇ UNVERIFIED |
| SCStarpak CORP | Houston | TX | — | ◇ UNVERIFIED |
| SOState of Delaware Graphics & Printing - 604 Otis Dr, Dover | Dover | DE | — | ◇ UNVERIFIED |
| SNStillman Northern CORP | East Syracuse | NY | — | ◇ UNVERIFIED |
| SAStonehouse Acquisition CO Llc/chambersburg | Chambersburg | PA | — | ◇ UNVERIFIED |
| SOStrength of Nature LLC | Savannah | GA | — | ◇ UNVERIFIED |
| SASulphuric Acid Trading | Tampa | FL | — | ◇ UNVERIFIED |
| SPSunbeam Products, INC. Dba Jarden Comsum | Mcminnville | TN | — | ◇ UNVERIFIED |
| SCSunbelt Chemicals INC | Gulfport | MS | — | ◇ UNVERIFIED |
| SCSuncast CORP | Batavia | IL | — | ◇ UNVERIFIED |
 Sun Chemical CORP | Williamsport | MD | — | ◇ UNVERIFIED |
| SBSundial Brands LLC | Amityville | NY | — | ◇ UNVERIFIED |
| SPSunoco Partners M & T - Beaver Terminal | Vanport | PA | — | ◇ UNVERIFIED |
| SFSunrise Fiberglass Engineering Site | Shelton | WA | — | ◇ UNVERIFIED |
| SMSuperior Manufacturing Group | Moselle | MS | — | ◇ UNVERIFIED |
| SLSv Lab | Prescott | WI | — | ◇ UNVERIFIED |
| SSSw Shattuck Chemical CO INC | Denver | CO | — | ◇ UNVERIFIED |
| SSylvania | Fort Worth | TX | — | ◇ UNVERIFIED |
| SFSysco Food Services | Walnut | CA | — | ◇ UNVERIFIED |
| TITakasago International CORP US | Northvale | NJ | — | ◇ UNVERIFIED |
| TPTalco Plastics | Long Beach | CA | — | ◇ UNVERIFIED |
| TMTaylor Made Fiberglass, INC. | Jacksonville | FL | — | ◇ UNVERIFIED |
| TLTdc Llc-corpus Christi Plant | Corpus Christi | TX | — | ◇ UNVERIFIED |
| TLTdc LLC - Westlake Plant | Westlake | LA | — | ◇ UNVERIFIED |
| TDTeel Das, LLC | Baraboo | WI | — | ◇ UNVERIFIED |
| TPTekni Plex INC | Branchburg | NJ | — | ◇ UNVERIFIED |
| TATeknor Apex | Saint Albans | VT | — | ◇ UNVERIFIED |
| TATeknor Apex Company, Maclin Division | City of Industry | CA | — | ◇ UNVERIFIED |
| TOTencate Ohio | Hebron | OH | — | ◇ UNVERIFIED |
| TPTencate Performance Composites | Camarillo | CA | — | ◇ UNVERIFIED |
| TPTenneco Polymers INC | Flemington | NJ | — | ◇ UNVERIFIED |
| TMTerra Mississippi Nitrogen (melamine Facility) | Donaldsonville | LA | — | ◇ UNVERIFIED |
| TKTessenderlo Kerley INC | Fresno | CA | — | ◇ UNVERIFIED |
| TMTetlp Mlv Ln 12 Mp 197.15 Blue Marsh West | Robesonia | PA | — | ◇ UNVERIFIED |
| TCTetra Chemicals | Westlake | LA | — | ◇ UNVERIFIED |
| TETevco Enterprises INC | South Plainfield | NJ | — | ◇ UNVERIFIED |
| TCThatcher Chemical of Florida INC | Palmetto | FL | — | ◇ UNVERIFIED |
 Thatcher Company of California, INC. - Stockton | Stockton | CA | — | ◇ UNVERIFIED |
| TDThe Dow Chemical CO | Joliet | IL | — | ◇ UNVERIFIED |
| TDThe Dow Chemical Company | Magnolia | AR | — | ◇ UNVERIFIED |
| TGThe Geon Company | Deer Park | TX | — | ◇ UNVERIFIED |
| TLThe Lewis Chemical CO. | Rome | GA | — | ◇ UNVERIFIED |
| TMThe Marbleworks | North Port | FL | — | ◇ UNVERIFIED |
| TPThe P D George Company | Fort Wayne | IN | — | ◇ UNVERIFIED |
| TPThermedics Polymer Products | Woburn | MA | — | ◇ UNVERIFIED |
| TFThermo Fisher Scientific | Bedford, Town of | MA | — | ◇ UNVERIFIED |
| TPThermoplastic Processes INC | Stirling | NJ | — | ◇ UNVERIFIED |
| TETherm-o-rock East INC | Donora | PA | — | ◇ UNVERIFIED |
| TSThe Stephan CO | Tampa | FL | — | ◇ UNVERIFIED |
| TWThe Whitaker Company | Spartanburg | SC | — | ◇ UNVERIFIED |
| TIThibiant International INC Dba Thibiant Naturals | Newbury Park | CA | — | ◇ UNVERIFIED |
| TLTicona LLC | Summit | NJ | — | ◇ UNVERIFIED |
| TPTicona Polymers, INC. | Lebanon | TN | — | ◇ UNVERIFIED |
| TMToyoda Machinery USA INC | Teterboro | NJ | — | ◇ UNVERIFIED |
| TZTrace Zero INC | Auburn Hills | MI | — | ◇ UNVERIFIED |
| TSTrelleborg Sealing Solutions US INC | Elk Rapids | MI | — | ◇ UNVERIFIED |
| TCTrimont Chemicals INC | Peabody | MA | — | ◇ UNVERIFIED |
| TLTrinseo LLC (p1025) | Midland | MI | — | ◇ UNVERIFIED |
| TPTri Pac INC. | South Bend | IN | — | ◇ UNVERIFIED |
| URUcar Resinas Caribe INC. | Bayamon | PR | — | ◇ UNVERIFIED |
| UTUltra Tech Extrusions of Tennessee INC. | Rocky Top | TN | — | ◇ UNVERIFIED |
| UAUmicore Autocat USA INC | Catoosa | OK | — | ◇ UNVERIFIED |
| UCUmicore Cobalt & Energy Products | Maxton | NC | — | ◇ UNVERIFIED |
| UPUmicore Precious Metals Chemistry (pmc) USA LLC | Catoosa | OK | — | ◇ UNVERIFIED |
| USUmicore Specialty Chemicals - Arab Facility | Arab | AL | — | ◇ UNVERIFIED |
| ULUnifi-kinston LLC | Kinston | NC | — | ◇ UNVERIFIED |
| UMUnilever Manufacturing | Jonesboro | AR | — | ◇ UNVERIFIED |
| UCUnion Carbide Corporation - Ucar Emulsion Systems | Garland | TX | — | ◇ UNVERIFIED |
| URUnited Resins INC | Pittsgrove Township | NJ | — | ◇ UNVERIFIED |
| UPUniversal Packaging Systems, INC. Dba Paklab | Chino | CA | — | ◇ UNVERIFIED |
| UIUraseal INC | Dover | NH | — | ◇ UNVERIFIED |
| UUUrenco USA | Eunice | NM | — | ◇ UNVERIFIED |
| UTUrethane Technology CO INC Plant | Newburgh | NY | — | ◇ UNVERIFIED |
| UDUsalco/ Delta Chemical CORP | Ashtabula | OH | — | ◇ UNVERIFIED |
| UMUsalco Michigan City Plant, LLC | Michigan City | IN | — | ◇ UNVERIFIED |
| UU.s.cosmetics | Killingly (dayville) | CT | — | ◇ UNVERIFIED |
| UTUS Titanium | Piney River | VA | — | ◇ UNVERIFIED |
| USUtica Silicates Plt | Utica | IL | — | ◇ UNVERIFIED |
