| HRHampford Research INC | Stratford | CT | — | ◇ UNVERIFIED |
| HCHampshire Chemical | Nashua | NH | — | ◇ UNVERIFIED |
| HCHanlon Composites, LLC | Euclid | OH | — | ◇ UNVERIFIED |
| HAHanwha Advanced Materials America LLC | Shelby | NC | — | ◇ UNVERIFIED |
| HMHartley Manufacturing CO | Ravenswood | WV | — | ◇ UNVERIFIED |
| HPHarvel Plastics INC | Bakersfield | CA | — | ◇ UNVERIFIED |
| HRHarvin Reaction Technologies Mercury Spill | Greensboro | NC | — | ◇ UNVERIFIED |
| HIHasa INC. | Tracy | CA | — | ◇ UNVERIFIED |
| HCHaverhill Chemicals LLC | Haverhill | OH | — | ◇ UNVERIFIED |
| HPHayward Point Eden Business Center | Hayward | CA | — | ◇ UNVERIFIED |
| HEHaz-mat Environmental Services, LLC | Charlotte | NC | — | ◇ UNVERIFIED |
| HFH.b. Fuller CO. (1431052206) | Blue Ash | OH | — | ◇ UNVERIFIED |
| HUHdpe Unit Victoria | Victoria | TX | — | ◇ UNVERIFIED |
| HHHelen Hansen Elementary School | Stoughton | MA | — | ◇ UNVERIFIED |
| HUHenkel US Operations | Peabody | MA | — | ◇ UNVERIFIED |
| HUHenkel US Operations Corporation | Berkeley | CA | — | ◇ UNVERIFIED |
| HCHenry CO | Ontario | CA | — | ◇ UNVERIFIED |
| HAHercules Addyston Ohio | Addyston | OH | — | ◇ UNVERIFIED |
| HHHercules Hopewell | Hopewell | VA | — | ◇ UNVERIFIED |
| HIHercules INC | Parchment | MI | — | ◇ UNVERIFIED |
| HIHercules, INC. (gibbstown Plant) | Gibbstown | NJ | — | ◇ UNVERIFIED |
| HCHeritage Crystal Clean LLC - Shreveport Facility | Shreveport | LA | — | ◇ UNVERIFIED |
| HBHero Bx | North Hampton | NH | — | ◇ UNVERIFIED |
| HBHero Bx | Erie | PA | — | ◇ UNVERIFIED |
| HBHero Bx | South Roxana | IL | — | ◇ UNVERIFIED |
| HHexcel | Eden | NC | — | ◇ UNVERIFIED |
| HCHexcel Corporation | Windsor | CO | — | ◇ UNVERIFIED |
| HCHexcel Corporation | Livermore | CA | — | ◇ UNVERIFIED |
| HFHexcel Facility | Lodi | NJ | — | ◇ UNVERIFIED |
| HHHexion Holdings Corporation | Springfield | OR | — | ◇ UNVERIFIED |
| HIHexion INC. | South Glens Falls | NY | — | ◇ UNVERIFIED |
| HIHexion INC - Geismar Facility | Geismar | LA | — | ◇ UNVERIFIED |
| HIHexion INC. - Hope Plant | Hope | AR | — | ◇ UNVERIFIED |
| HIHexion INC. - Morganton | Morganton | NC | — | ◇ UNVERIFIED |
| HLHexion La Grande Site | Island City | OR | — | ◇ UNVERIFIED |
| HSHexion Specialty Chemicals, INC. | Lynwood | CA | — | ◇ UNVERIFIED |
| HSHexion Specialty Chemicals, INC. | Carpentersville | IL | — | ◇ UNVERIFIED |
| HMHFC Manufacturing, inc. | Lancaster | CA | — | ◇ UNVERIFIED |
| HAHgm Automotive Electronics INC | Torrance | CA | — | ◇ UNVERIFIED |
| HVHidden Valley Transfer Station and Landfill | Puyallup | WA | — | ◇ UNVERIFIED |
| HCHigh Country Plastics, INC. | Caldwell | ID | — | ◇ UNVERIFIED |
| HEHighlands Ethanol, LLC | Lorida | FL | — | ◇ UNVERIFIED |
| HSHigh Sierra Corp | Chippewa Falls | WI | — | ◇ UNVERIFIED |
| HRHilco Real Estate, LLC | Elkhart | IN | — | ◇ UNVERIFIED |
| HPHilex Poly LLC | Henrico | VA | — | ◇ UNVERIFIED |
| HUHirsch USA INC. | Peachtree City | GA | — | ◇ UNVERIFIED |
| HRHi-tech Recycling | Redding | CA | — | ◇ UNVERIFIED |
| HRHk Research Corporation | Hickory | NC | — | ◇ UNVERIFIED |
| HPHMG Properties LLC | Lake Mills | WI | — | ◇ UNVERIFIED |
| HHHna Holdings INC. | Pasadena | TX | — | ◇ UNVERIFIED |
| 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 |
| HEHoneywell El Segundo Erd Treatment System | Manhattan Beach | CA | — | ◇ UNVERIFIED |
| HFHoneywell Frankford | Philadelphia | PA | — | ◇ UNVERIFIED |
| HIHoneywell INC | Chester | VA | — | ◇ UNVERIFIED |
| HIHoneywell International INC | Hopewell | VA | — | ◇ UNVERIFIED |
| HIHoneywell International INC | Portland | OR | — | ◇ UNVERIFIED |
| HIHoneywell International INC | El Segundo | CA | — | ◇ UNVERIFIED |
| HIHoneywell International INC - Chesterfield | Chester | VA | — | ◇ 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 | Ringwood | IL | — | ◇ UNVERIFIED |
| HHuntsman | Carson | CA | — | ◇ 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 |
| 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 |
| IAIcl-ip America, INC. | Belmont | NC | — | ◇ UNVERIFIED |
| ILIconic Labs LLC | Westlake | OH | — | ◇ UNVERIFIED |
| ISI.C. Scientific Solutions | Westlake | OH | — | ◇ UNVERIFIED |
| IRIgm Resin INC | Bartlett | IL | — | ◇ UNVERIFIED |
| IHImi Houston | Houston | TX | — | ◇ UNVERIFIED |
| IWImperial Western Products CO INC | Coachella | CA | — | ◇ UNVERIFIED |
