| HCHoechst Celanese Chemical INC | Houston | TX | — | ◇ UNVERIFIED |
| HPHoffman Plastic Compounds INC | Paramount | CA | — | ◇ UNVERIFIED |
| HSHoku Scientific, INC. | Kapolei | HI | — | ◇ UNVERIFIED |
| HHHoliday Housewares | Leominster | MA | — | ◇ UNVERIFIED |
| HWHoly Water Solutions, LLC D/b/a Zero Hazard | Lewisberry | PA | — | ◇ UNVERIFIED |
| HDHome Depot 4010 | Hillsboro | OR | — | ◇ UNVERIFIED |
| HDHome Depot 8563 | Oak Harbor | WA | — | ◇ UNVERIFIED |
| HVHomeland Vinyl Products | Birmingham | AL | — | ◇ UNVERIFIED |
| HEHoneywell El Segundo Erd Treatment System | Manhattan Beach | CA | — | ◇ UNVERIFIED |
| HFHoneywell Frankford | Philadelphia | PA | — | ◇ UNVERIFIED |
| HIHoneywell INC | Chester | VA | — | ◇ UNVERIFIED |
| HIHoneywell International | Monroe Township | NJ | — | ◇ UNVERIFIED |
| HIHoneywell International INC | Portland | OR | — | ◇ UNVERIFIED |
| HIHoneywell International INC | El Segundo | CA | — | ◇ UNVERIFIED |
| HIHoneywell International INC | Hopewell | VA | — | ◇ UNVERIFIED |
| HIHoneywell International INC - Chesterfield | Chester | VA | — | ◇ UNVERIFIED |
| HLHoneywell - Linden Facility | Linden | NJ | — | ◇ UNVERIFIED |
| HOHoneywell Offsite Wells: Manhattan Country Club | Manhattan Beach | CA | — | ◇ UNVERIFIED |
| HOHoneywell Offsite Wells Oak Avenue | Manhattan Beach | CA | — | ◇ UNVERIFIED |
| HCHorsehead CORP - Monaca Smelter | Monaca | PA | — | ◇ UNVERIFIED |
| HNHot N Glassy INC | Carson | CA | — | ◇ UNVERIFIED |
| HSHppe Surfactant Spill | Columbus | GA | — | ◇ UNVERIFIED |
| H7Hrs - 780 Montague | San Jose | CA | — | ◇ UNVERIFIED |
| HRH R Technologies, INC | Madison Heights | MI | — | ◇ UNVERIFIED |
| HTHudson Terminal Railroad/boulder Scientific Company | Hudson | CO | — | ◇ UNVERIFIED |
| HCHuey Chemical CORP | Tampa | FL | — | ◇ UNVERIFIED |
| HPHuey P Stockstill Llc, Picayune Ready Mix and Asphalt Plant | Picayune | MS | — | ◇ UNVERIFIED |
| HJHugh J Resins CO INC | Long Beach | CA | — | ◇ UNVERIFIED |
| HGHumic Growth Solutions | Jacksonville | FL | — | ◇ UNVERIFIED |
| HFHuntington Foam | Coraopolis | PA | — | ◇ UNVERIFIED |
| HHuntsman | Carson | CA | — | ◇ UNVERIFIED |
| HHuntsman | Ringwood | IL | — | ◇ UNVERIFIED |
| HHuntsman | Corona | CA | — | ◇ UNVERIFIED |
 Huntsman Advanced Materials Americas, Ll | Los Angeles | CA | — | ◇ UNVERIFIED |
| Huntsman Advanced Materials Americas, LLC. | Maple Shade | NJ | — | ◇ UNVERIFIED |
| HAHuntsman Advanced Materials, LLC | Salt Lake City | UT | — | ◇ UNVERIFIED |
| HAHuntsman Advanced Materials - Mcintosh Plant | Mc Intosh | AL | — | ◇ UNVERIFIED |
| HCHuntsman @ Composites One | Salt Lake City | UT | — | ◇ UNVERIFIED |
| HCHuntsman Corporation | Ontario | CA | — | ◇ UNVERIFIED |
| HFHuntsman Film Products CORP. | Merced | CA | — | ◇ UNVERIFIED |
| Huntsman International | Stockton | CA | — | ◇ UNVERIFIED |
| Huntsman International - Lohnpack Site | Hamilton | NJ | — | ◇ UNVERIFIED |
| HMHuntsman - Mcintosh Operations | Mc Intosh | AL | — | ◇ UNVERIFIED |
| HPHuntsman Petrochemical Dayton Plant | Dayton | TX | — | ◇ UNVERIFIED |
| HPHuntsman Polymers | Odessa | TX | — | ◇ UNVERIFIED |
| HTHuntsman - Total Distribution Warehouse | Charlotte | NC | — | ◇ UNVERIFIED |
| HCHydrol Chemical Company | Yeadon | PA | — | ◇ UNVERIFIED |
| HPHydroseal Polymers INC | Riverside | CA | — | ◇ UNVERIFIED |
| HSHydro Spa LLC | Ocala | FL | — | ◇ UNVERIFIED |
| III2m INC. | Mountain Top | PA | — | ◇ UNVERIFIED |
