| TPThistle Processing LLC | Huntington | WV | — | ◇ UNVERIFIED |
| TCTimilon Corporation | Topeka | KS | — | ◇ UNVERIFIED |
| TCTimminco Corporation (was Dow Chemical) | Aurora | CO | — | ◇ UNVERIFIED |
| TSTinuum Services LLC | Baldwin | IL | — | ◇ UNVERIFIED |
| TMTitanium Metals CORP | East Windsor | CT | — | ◇ UNVERIFIED |
| TMTitanium Metals Corporation | Millwood | WV | — | ◇ UNVERIFIED |
| TMTitanium Metals Corporation | Exton | PA | — | ◇ UNVERIFIED |
| TDTnpc Dallas Facility | Dallas | TX | — | ◇ UNVERIFIED |
| TOTokyo Ohka Kogyo America, INC | Milpitas | CA | — | ◇ UNVERIFIED |
| TCToll Compaction Group LLC | Belpre | OH | — | ◇ UNVERIFIED |
| TWTolsa West Coast CORP. | Lovelock | NV | — | ◇ UNVERIFIED |
| TToolmex | Northborough | MA | — | ◇ UNVERIFIED |
| TBTop Brass Investments, LLC | Vallejo | CA | — | ◇ UNVERIFIED |
| TSTorrey S Crane | Plantsville | CT | — | ◇ UNVERIFIED |
| TWTotal Water Treatment Systems, INC | Madison | WI | — | ◇ UNVERIFIED |
| TMToyota Motor North America, INC. | Torrance | CA | — | ◇ UNVERIFIED |
| TUTreatt Usa, INC. | Lakeland | FL | — | ◇ UNVERIFIED |
| TNTremont Nail Factory Site | Wareham | MA | — | ◇ UNVERIFIED |
| TCTrex Company, INC. - R&d | Winchester | VA | — | ◇ UNVERIFIED |
| TCTriad Chemicals Warehouse | Asheboro | NC | — | ◇ UNVERIFIED |
| TWTriangle Warehouse | Greensboro | NC | — | ◇ UNVERIFIED |
| TTTrick Titanium | Holt | MI | — | ◇ UNVERIFIED |
| TBTrilink Biotechnologies | San Diego | CA | — | ◇ UNVERIFIED |
| TPTri Pac, INC | Vandalia | MI | — | ◇ UNVERIFIED |
| TITri-pac Incorporated | South Bend | IN | — | ◇ UNVERIFIED |
| TITri-pac Incorporated Kenmore | South Bend | IN | — | ◇ UNVERIFIED |
| T5Triple 5 Nutrition LLC | Gardena | CA | — | ◇ UNVERIFIED |
| TCTriple-s Chemical Products | Los Angeles | CA | — | ◇ UNVERIFIED |
| TNTriumph Northwest | Albany | OR | — | ◇ UNVERIFIED |
| TFTrue Farma Holding INC Dba True Farma Manufacturing LLC | Paso Robles | CA | — | ◇ UNVERIFIED |
| TTruehq | Hillsboro | OR | — | ◇ UNVERIFIED |
| TITruetech INC | Riverhead | NY | — | ◇ UNVERIFIED |
| TCTucker Chemical LLC | Woods Cross | UT | — | ◇ UNVERIFIED |
| TETungsten Eagle Upgrades INC | Manassas | VA | — | ◇ UNVERIFIED |
| TITurner Industries Group, LLC | Geismar | LA | — | ◇ UNVERIFIED |
| TBTwo Brothers Scrap Metal | Farmingdale | NY | — | ◇ UNVERIFIED |
| TLTysol LLC | Saint Paul | MN | — | ◇ UNVERIFIED |
| TLTysol LLC | Woodbury | MN | — | ◇ UNVERIFIED |
| TLTysol LLC | Saint Paul | MN | — | ◇ UNVERIFIED |
| UAUltra Additives, LLC D/b/a Munzing North America, LP | Clover | SC | — | ◇ UNVERIFIED |
| UMUltra-met Mfg. CO. | Urbana | OH | — | ◇ UNVERIFIED |
| UCUnelko Corporation | Scottsdale | AZ | — | ◇ UNVERIFIED |
| UCUnion Carbide CORP | Torrance | CA | — | ◇ UNVERIFIED |
| UCUnion Carbide CORP Holz Impoundment | Near South Charleston | WV | — | ◇ UNVERIFIED |
| USUnited Salt Corporation | Missouri City | TX | — | ◇ UNVERIFIED |
| USUnited States Department of Energy Savannah River Site | Aiken | SC | — | ◇ UNVERIFIED |
| USUnivar Solutions Liquids Plant Legacy Magnablend | Waxahachie | TX | — | ◇ UNVERIFIED |
| USUnivar Solutions USA LLC | Fairfield | CA | — | ◇ UNVERIFIED |
| UUUnivar USA INC | Hobbs | NM | — | ◇ UNVERIFIED |
| UMUniversal Molding Company | Lynwood | CA | — | ◇ UNVERIFIED |
| UMUniversal Molding Extrusion CO | Downey | CA | — | ◇ UNVERIFIED |
| UPUniversal Polymer Corporation | Chino | CA | — | ◇ UNVERIFIED |
| UHUnlimited Horizons, L.l.c. | Matthews | NC | — | ◇ UNVERIFIED |
| UUnocal | Wilmington | CA | — | ◇ UNVERIFIED |
 Urban Electric Power INC | Pearl River | NY | — | ◇ UNVERIFIED |
| UAU.s. Army - Pine Bluff Arsenal | White Hall | AR | — | ◇ UNVERIFIED |
| UBUS Banknote CORP | Philadelphia | PA | — | ◇ UNVERIFIED |
| UUUsda Usfs R05 Air Attack Base | Chico | CA | — | ◇ UNVERIFIED |
| UDUS Doi Blm Pocatello Air Tanker Base | Pocatello | ID | — | ◇ UNVERIFIED |
| UDUS Doi Blm Twin Falls Air Tanker Base | Twin Falls | ID | — | ◇ UNVERIFIED |
| UOUsdol Osha | Mohrsville | PA | — | ◇ UNVERIFIED |
| UOUsdol Osha | Dalton | GA | — | ◇ UNVERIFIED |
| UEUS Ecology Alaska, LLC | Anchorage | AK | — | ◇ UNVERIFIED |
| UWU.s. Water Services | Aberdeen | MD | — | ◇ UNVERIFIED |
| UWUS Water Services | Carrollton | MO | — | ◇ UNVERIFIED |
 Utah Foam Products CO. INC. | Nephi | UT | — | ◇ UNVERIFIED |
| VPVacuum Process Engineering | Sacramento | CA | — | ◇ UNVERIFIED |
| VEValley Energy | Sterling | IL | — | ◇ UNVERIFIED |
| VHVan Houtte INC | Henderson | KY | — | ◇ UNVERIFIED |
| VCVape Craft LLC | Vista | CA | — | ◇ UNVERIFIED |
| VIVapor Image LLC | Hanover | MA | — | ◇ UNVERIFIED |
| VSVapor Source Hq | Pueblo | CO | — | ◇ UNVERIFIED |
| VIVaravo INC | North Hollywood | CA | — | ◇ UNVERIFIED |
| VIVarian INC | Lake Forest | CA | — | ◇ UNVERIFIED |
| VSVarian Sample Preparation Products | Harbor City | CA | — | ◇ UNVERIFIED |
| VSVennerbeck Stern Leach | Lincoln | RI | — | ◇ UNVERIFIED |
| VCVenture Chemical INC. | Seagraves | TX | — | ◇ UNVERIFIED |
| VIVerifone INC | Lincoln | CA | — | ◇ UNVERIFIED |
| VMVersum Materials US LLC - Suite 101 | Tempe | AZ | — | ◇ UNVERIFIED |
| VTVer Tech Laboratories Inc | Rockford | MN | — | ◇ UNVERIFIED |
| VCVertex Chemical Corporation Memphis, Tn | Memphis | TN | — | ◇ UNVERIFIED |
| VUVesuvius USA Site | Chehalis | WA | — | ◇ UNVERIFIED |
| VLVhg Labs INC. Dba Lgc Standards | Manchester | NH | — | ◇ UNVERIFIED |
| VSViatek Solutions | Tampa | FL | — | ◇ UNVERIFIED |
| VCVibromatic Company Inc | Noblesville | IN | — | ◇ UNVERIFIED |
| VVVida Verde, LLC | Fayetteville | AR | — | ◇ UNVERIFIED |
| VGVincit Group | Livingston | CA | — | ◇ UNVERIFIED |
| VRVmr Receiving | Miami | FL | — | ◇ UNVERIFIED |
 Vorbeck Materials CORP. | Grand Forks | ND | — | ◇ UNVERIFIED |
| VVulcan | Los Gatos | CA | — | ◇ UNVERIFIED |
| VHVulcan Hart Corporation | Dundalk | MD | — | ◇ UNVERIFIED |
| VIVwr International, LLC | Bridgeport | NJ | — | ◇ UNVERIFIED |
| WNWa317940854 - Nucor Corporation | Seattle | WA | — | ◇ UNVERIFIED |
| WMWa317946434 - Mama J S LLC | Longview | WA | — | ◇ UNVERIFIED |
| WCWah Chang Titanium Wire | Frackville | PA | — | ◇ UNVERIFIED |
| W1Warehouse 14 - Chemtreat Containers | Nampa | ID | — | ◇ UNVERIFIED |
| W2Warehouse 22 - Chemtreat Container | Centerville | UT | — | ◇ UNVERIFIED |
| W3Warehouse 37 - Chemtreat Containers South Side of the Building | Chino | CA | — | ◇ UNVERIFIED |
| W5Warehouse 50 Tesla | Irvine | CA | — | ◇ UNVERIFIED |
| WCWarsaw Chemical Holdings LLC | Warsaw | IN | — | ◇ UNVERIFIED |
