| HBHero Bx | South Roxana | IL | — | ◇ UNVERIFIED |
| HEHess - Edgewater Terminal | Edgewater | NJ | — | ◇ UNVERIFIED |
| HHexcel | Eden | NC | — | ◇ UNVERIFIED |
| HFHexcel Facility | Lodi | NJ | — | ◇ UNVERIFIED |
| HIHexion INC - Geismar Facility | Geismar | LA | — | ◇ UNVERIFIED |
| HVHidden Valley Transfer Station and Landfill | Puyallup | WA | — | ◇ UNVERIFIED |
| HHHigh Hill Biofuels LLC | High Hill | MO | — | ◇ UNVERIFIED |
| HEHighlands Ethanol, LLC | Lorida | FL | — | ◇ UNVERIFIED |
| HPHigh Performance Products INC @ Medway Ind Pk | Branchburg Twp | NJ | — | ◇ UNVERIFIED |
| HTHigh Tech Auto Body INC | Wilmington | DE | — | ◇ UNVERIFIED |
| HRHilco Real Estate, LLC | Elkhart | IN | — | ◇ UNVERIFIED |
| HLHi Line Cooperative, Inc.-grant Terminal | Grant | NE | — | ◇ UNVERIFIED |
| HBHill Brothers Chemical-rowley | Grantsville | UT | — | ◇ UNVERIFIED |
| HTHi Tech Auto Body | Montrose | CO | — | ◇ UNVERIFIED |
| HJH J Baker Bro INC | Wilmington | CA | — | ◇ UNVERIFIED |
| HKH Krevit & CO Water Treatment Chemicals | New Haven | CT | — | ◇ UNVERIFIED |
| HHHna Holdings INC. | Pasadena | TX | — | ◇ UNVERIFIED |
| HSHoku Scientific, INC. | Kapolei | HI | — | ◇ UNVERIFIED |
| HIHolcim (us) INC - Artesia Plant | Artesia | MS | — | ◇ UNVERIFIED |
| HHHoliday Housewares | Leominster | MA | — | ◇ UNVERIFIED |
| HWHoly Water Solutions, LLC D/b/a Zero Hazard | Lewisberry | PA | — | ◇ UNVERIFIED |
| HDHome Depot 4010 | Hillsboro | OR | — | ◇ UNVERIFIED |
| HEHoneywell Electronic Chemicals LLC | Chandler | AZ | — | ◇ UNVERIFIED |
| HIHoneywell, INC. | Arvada | CO | — | ◇ UNVERIFIED |
| HIHoneywell International Inc-claymont | Claymont | DE | — | ◇ UNVERIFIED |
| HCHoover Circular Solutions Houston | Houston | TX | — | ◇ UNVERIFIED |
| HIHoward Industries INC | Columbus | OH | — | ◇ UNVERIFIED |
| HSHppe Surfactant Spill | Columbus | GA | — | ◇ UNVERIFIED |
| HRH R Technologies, INC | Madison Heights | MI | — | ◇ UNVERIFIED |
| HTHudson Terminal Railroad/boulder Scientific Company | Hudson | CO | — | ◇ UNVERIFIED |
| HCHuey Chemical CORP | Tampa | FL | — | ◇ UNVERIFIED |
| HGHumic Growth Solutions | Jacksonville | FL | — | ◇ UNVERIFIED |
| HRHunt Refining CO | Moundville | AL | — | ◇ UNVERIFIED |
 Huntsman Advanced Materials Americas INC | Mc Intosh | AL | — | ◇ UNVERIFIED |
| Huntsman Advanced Materials Americas, LLC. | Maple Shade | NJ | — | ◇ UNVERIFIED |
| HPHuntsman Polymers | Odessa | TX | — | ◇ UNVERIFIED |
| HVHunt Vicksburg Terminal | Vicksburg | MS | — | ◇ UNVERIFIED |
| HVHuron Valley Steel | Anniston | AL | — | ◇ UNVERIFIED |
| HAHwtg - Apopka | Apopka | FL | — | ◇ UNVERIFIED |
| HCHydrite Chemical CO | Wausau | WI | — | ◇ UNVERIFIED |
| HCHydrite Chemical CO | Oshkosh | WI | — | ◇ UNVERIFIED |
| HPHydroseal Polymers INC | Riverside | CA | — | ◇ UNVERIFIED |
| HSHydro Spa LLC | Ocala | FL | — | ◇ UNVERIFIED |
| HCHyperion Catalysis INC | Cambridge | MA | — | ◇ UNVERIFIED |
| INIfi Newark, INC. | Newark City | NJ | — | ◇ UNVERIFIED |
| IRIgm Resin INC | Bartlett | IL | — | ◇ UNVERIFIED |
| IHI H Schlezinger INC | Columbus | OH | — | ◇ UNVERIFIED |
| IPImage Polymers | Mount Pleasant | TN | — | ◇ UNVERIFIED |
| IRImco Recycling of Indiana | Bedford | IN | — | ◇ UNVERIFIED |
| IHImi Houston | Houston | TX | — | ◇ UNVERIFIED |
