 Starfire Systems INC | Schenectady | NY | — | ◇ UNVERIFIED |
| SCStarpak CORP | Houston | TX | — | ◇ UNVERIFIED |
| STStar Thermoplastic Alloys & Rubbers INC | Broadview | IL | — | ◇ UNVERIFIED |
| SOState of Delaware Graphics & Printing - 604 Otis Dr, Dover | Dover | DE | — | ◇ UNVERIFIED |
| SNStillman Northern CORP | East Syracuse | NY | — | ◇ UNVERIFIED |
| SMSt. Mary's Refinery CO. | Saint Marys | WV | — | ◇ UNVERIFIED |
| SAStonehouse Acquisition CO Llc/chambersburg | Chambersburg | PA | — | ◇ UNVERIFIED |
| SCStoney Creek Technologies LLC | Marcus Hook | PA | — | ◇ UNVERIFIED |
| SPStreamline Polymers | Houston | TX | — | ◇ UNVERIFIED |
| SASulphuric Acid Trading | Tampa | FL | — | ◇ UNVERIFIED |
| SPSumika Polymer Compounds America INC. | Griffin | GA | — | ◇ UNVERIFIED |
| SSSummit Supply | Seattle | WA | — | ◇ UNVERIFIED |
| SCSunbelt Chemicals INC | Gulfport | MS | — | ◇ UNVERIFIED |
| SCSuncast CORP | Batavia | IL | — | ◇ UNVERIFIED |
 Sun Chemical CORP | Wurtland | KY | — | ◇ UNVERIFIED |
| Sun Chemical CORP | Williamsport | MD | — | ◇ UNVERIFIED |
| SRSunland Refining | Bakersfield | CA | — | ◇ UNVERIFIED |
| SPSunoco Partners Mkt & Term LP Darby Creek Tank Farm | Darby | PA | — | ◇ UNVERIFIED |
| SPSunoco Partners M & T - Beaver Terminal | Vanport | PA | — | ◇ UNVERIFIED |
| SFSunrise Fiberglass Engineering Site | Shelton | WA | — | ◇ UNVERIFIED |
| SISuperior Industries International | Pittsburg | KS | — | ◇ UNVERIFIED |
| SMSuperior Manufacturing Group | Moselle | MS | — | ◇ UNVERIFIED |
| SISurtec INC | Valparaiso | IN | — | ◇ UNVERIFIED |
| SSSw Shattuck Chemical CO INC | Denver | CO | — | ◇ UNVERIFIED |
| SSylvania | Fort Worth | TX | — | ◇ UNVERIFIED |
| SISymrise INC | Chester | NY | — | ◇ UNVERIFIED |
| SBSynergy Biofuels LLC -2 | Pennington Gap | VA | — | ◇ UNVERIFIED |
| SLSynthepor LLC | Nampa | ID | — | ◇ UNVERIFIED |
| SASynthomer Adhesive Tehcnologies Eastoflex and East | Longview | TX | — | ◇ UNVERIFIED |
| SFSysco Food Services | Walnut | CA | — | ◇ UNVERIFIED |
| TITakasago International CORP (usa) | University Park | IL | — | ◇ UNVERIFIED |
| TPTalco Plastics | Long Beach | CA | — | ◇ UNVERIFIED |
| THTaminco Higher Amines INC | Riverview | MI | — | ◇ 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 CO | Attleboro | MA | — | ◇ UNVERIFIED |
| TATeknor Apex Company, Maclin Division | City of Industry | CA | — | ◇ UNVERIFIED |
| TTeknos | Charlotte | NC | — | ◇ 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 |
| TCTetra Chemicals | Westlake | LA | — | ◇ UNVERIFIED |
| TFTexas Fluorescence Laboratories | Austin | TX | — | ◇ UNVERIFIED |
| TITexas International Refining | Galveston | TX | — | ◇ 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 |
| TIThe International Group INC | Richmond | CA | — | ◇ UNVERIFIED |
| TLThe Lewis Chemical CO. | Rome | GA | — | ◇ UNVERIFIED |
| TMThe Marbleworks | North Port | FL | — | ◇ UNVERIFIED |
| TLTheodor Leonhard Wax Company, INC. | Haledon | NJ | — | ◇ UNVERIFIED |
| TPThe P D George Company | Fort Wayne | IN | — | ◇ UNVERIFIED |
| TPThermedics Polymer Products | Woburn | MA | — | ◇ UNVERIFIED |
| TFThermo Fisher Scientific | Bedford, Town of | MA | — | ◇ UNVERIFIED |
| TFThermo Fluids INC. White City | White City | OR | — | ◇ UNVERIFIED |
| TPThermoplastic Processes INC | Stirling | NJ | — | ◇ UNVERIFIED |
| TETherm-o-rock East INC | Donora | PA | — | ◇ UNVERIFIED |
| TWThe Whitaker Company | Spartanburg | SC | — | ◇ UNVERIFIED |
| TSThomas Swan Opelika, INC. | Opelika | AL | — | ◇ UNVERIFIED |
| TCThree Creek Bioenergy | Sheffield | OH | — | ◇ UNVERIFIED |
| TLTicona LLC | Summit | NJ | — | ◇ UNVERIFIED |
| TPTicona Polymers, INC. | Bishop | TX | — | ◇ UNVERIFIED |
| TPTicona Polymers, INC. | Lebanon | TN | — | ◇ UNVERIFIED |
| TOTidelands Oil Production Company Etal | Long Beach | CA | — | ◇ UNVERIFIED |
| TCTotal Clean Pasadena Tank Wash | Pasadena | TX | — | ◇ UNVERIFIED |
| TFToxguard Fluid Technologies INC | Stanton | CA | — | ◇ UNVERIFIED |
| TZTrace Zero INC | Auburn Hills | MI | — | ◇ UNVERIFIED |
| TSTrelleborg Sealing Solutions US INC | Elk Rapids | MI | — | ◇ UNVERIFIED |
| TRTricor Refining LLC | Bakersfield | CA | — | ◇ UNVERIFIED |
| TCTrimont Chemicals INC | Peabody | MA | — | ◇ UNVERIFIED |
| TLTrinseo LLC (p1025) | Midland | MI | — | ◇ UNVERIFIED |
| TCTwentyfirst Century Biochemic | Marlborough | MA | — | ◇ UNVERIFIED |
| TBTwist Bioscience | Wilsonville | OR | — | ◇ 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 |
| UNUnc Naval Products | Norwich | CT | — | ◇ UNVERIFIED |
| ULUnifi-kinston LLC | Kinston | NC | — | ◇ UNVERIFIED |
| UCUnion Carbide Corporation - Ucar Emulsion Systems | Garland | TX | — | ◇ UNVERIFIED |
| UCUnion Carbide CORP Tucker Latex Plant | Tucker | GA | — | ◇ UNVERIFIED |
| UBUnited Biofuels INC - 435 Greenpoint Ave | Brooklyn | NY | — | ◇ UNVERIFIED |
| UIUnited Initiators | Theodore | AL | — | ◇ UNVERIFIED |
| UOUnited Organics CORP | Williamston | NC | — | ◇ UNVERIFIED |
| URUnited Resins INC | Pittsgrove Township | NJ | — | ◇ UNVERIFIED |
| UBUniversal Bioenergy of North America INC | Nettleton | MS | — | ◇ UNVERIFIED |
| UOUniversity of Portland | Portland | OR | — | ◇ UNVERIFIED |
| URUnocal Retort | Unk | CO | — | ◇ UNVERIFIED |
| UIUraseal INC | Dover | NH | — | ◇ UNVERIFIED |
| UUUrenco USA | Eunice | NM | — | ◇ UNVERIFIED |
