| HAHelena Agri-enterprises, LLC | Hanford | CA | — | ◇ UNVERIFIED |
| HFHenry Fertilizer | Henry | IL | — | ◇ 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 | Erie | PA | — | ◇ UNVERIFIED |
| HBHero Bx | North Hampton | NH | — | ◇ UNVERIFIED |
| HBHero Bx | South Roxana | IL | — | ◇ UNVERIFIED |
| HFHexcel Facility | Lodi | NJ | — | ◇ UNVERIFIED |
| HIHexion INC. | South Glens Falls | NY | — | ◇ UNVERIFIED |
| HIHexion INC - Geismar Facility | Geismar | LA | — | ◇ UNVERIFIED |
| HIHexion INC. - Hope Plant | Hope | AR | — | ◇ UNVERIFIED |
| HVHidden Valley Transfer Station and Landfill | Puyallup | WA | — | ◇ UNVERIFIED |
| HDHigh Desert Organix LLC | Madras | OR | — | ◇ UNVERIFIED |
| HEHighlands Ethanol, LLC | Lorida | FL | — | ◇ UNVERIFIED |
| HSHigh Sierra Corp | Chippewa Falls | WI | — | ◇ UNVERIFIED |
| HLHi Line Cooperative, Inc.-grant Terminal | Grant | NE | — | ◇ UNVERIFIED |
| HBHill Brothers Chemical-rowley | Grantsville | UT | — | ◇ UNVERIFIED |
| HRHi-tech Recycling | Redding | CA | — | ◇ UNVERIFIED |
| HBH.j.baker & Bro. LLC | Stockton | CA | — | ◇ UNVERIFIED |
| HKH Krevit & Company INC | New Haven | CT | — | ◇ UNVERIFIED |
| HKH Krevit & CO Water Treatment Chemicals | New Haven | CT | — | ◇ UNVERIFIED |
| HIHocking International Laboratories, LLC | Pipestone | MN | — | ◇ UNVERIFIED |
| HCHoechst Celanese Chemical INC | Houston | TX | — | ◇ UNVERIFIED |
 H-o-h Water Technology, INC. | Germantown | WI | — | ◇ UNVERIFIED |
| HCHolland Company Bators Garage | Adams | MA | — | ◇ UNVERIFIED |
| HCHolland Company Garage | North Adams | MA | — | ◇ UNVERIFIED |
| HWHoly Water Solutions, LLC D/b/a Zero Hazard | Lewisberry | PA | — | ◇ UNVERIFIED |
| HGHoneybear Growers | Brewster | WA | — | ◇ UNVERIFIED |
| HEHoneywell Electronic Chemicals LLC | Chandler | AZ | — | ◇ UNVERIFIED |
| HEHoneywell El Segundo Erd Treatment System | Manhattan Beach | CA | — | ◇ UNVERIFIED |
| HFHoneywell Frankford | Philadelphia | PA | — | ◇ UNVERIFIED |
| HIHoneywell, INC. | Arvada | CO | — | ◇ UNVERIFIED |
| HIHoneywell International INC | Portland | OR | — | ◇ UNVERIFIED |
| HIHoneywell International INC | Hopewell | VA | — | ◇ UNVERIFIED |
| HIHoneywell International INC | El Segundo | CA | — | ◇ UNVERIFIED |
| HIHoneywell International Inc-claymont | Claymont | DE | — | ◇ UNVERIFIED |
| HOHoneywell Offsite Wells: Manhattan Country Club | Manhattan Beach | CA | — | ◇ UNVERIFIED |
| HOHoneywell Offsite Wells Oak Avenue | Manhattan Beach | CA | — | ◇ UNVERIFIED |
| HPHoneywell Pmt | Baton Rouge | LA | — | ◇ UNVERIFIED |
| HPHookers Point Ammonia Terminal | Tampa | FL | — | ◇ UNVERIFIED |
| HCHopkins Chemical | Rome | GA | — | ◇ UNVERIFIED |
| HWHot Wax Distributors | Stanton | CA | — | ◇ UNVERIFIED |
| HIHoward Industries INC | Columbus | OH | — | ◇ UNVERIFIED |
| HHHpc Holdings, INC | North Augusta | SC | — | ◇ UNVERIFIED |
| HTHudson Terminal Railroad/boulder Scientific Company | Hudson | CO | — | ◇ UNVERIFIED |
| HCHuey Chemical CORP | Tampa | FL | — | ◇ UNVERIFIED |
| HPHumates Plant | Cuba | NM | — | ◇ UNVERIFIED |
| HGHumic Growth Solutions | Jacksonville | FL | — | ◇ UNVERIFIED |
| HHuntsman | Carson | CA | — | ◇ UNVERIFIED |
| HHuntsman | Corona | CA | — | ◇ UNVERIFIED |
| HCHuntsman @ Composites One | Salt Lake City | UT | — | ◇ UNVERIFIED |
| HCHuntsman Corporation | Dalton | GA | — | ◇ UNVERIFIED |
| HPHuntsman Petrochemical Dayton Plant | Dayton | TX | — | ◇ UNVERIFIED |
| HTHuntsman - Total Distribution Warehouse | Charlotte | NC | — | ◇ UNVERIFIED |
| HFHutchinson Fertilizer LLC | Hutchinson | KS | — | ◇ UNVERIFIED |
| HAHwtg - Apopka | Apopka | FL | — | ◇ UNVERIFIED |
| HCHydrite Chemical CO | Wausau | WI | — | ◇ UNVERIFIED |
| HCHydrol Chemical Company | Yeadon | PA | — | ◇ UNVERIFIED |
| HCHynite Corporation | Oak Creek | WI | — | ◇ UNVERIFIED |
| HCHyperion Catalysis INC | Cambridge | MA | — | ◇ UNVERIFIED |
| INI-5 North On-ramp at Exit 27 | Kalama | WA | — | ◇ UNVERIFIED |
| IAIbc Advanced Technologies, INC. V-1 | Orem | UT | — | ◇ UNVERIFIED |
| IAIbc Advanced Technologies, INC. Vineyard | Vineyard | UT | — | ◇ UNVERIFIED |
| INIb Nitrogen INC | Bucks | AL | — | ◇ UNVERIFIED |
| IAIcl Adel | Adel | GA | — | ◇ UNVERIFIED |
| IAIcl-ip America, INC. | Belmont | NC | — | ◇ UNVERIFIED |
| IPIcl Performance Products LP | Carteret | NJ | — | ◇ UNVERIFIED |
| IPIcl Performance Products, LP | Santa Rosa | CA | — | ◇ UNVERIFIED |
| ISIcl Specialty Products INC Carondelet Plant | Saint Louis | MO | — | ◇ UNVERIFIED |
| ILIconic Labs LLC | Westlake | OH | — | ◇ UNVERIFIED |
| ISI.C. Scientific Solutions | Westlake | OH | — | ◇ UNVERIFIED |
| ICImc-agrico Company, Port Sutton Terminal | Tampa | FL | — | ◇ UNVERIFIED |
| ICImerys Carbonates LLC | Sylacauga | AL | — | ◇ UNVERIFIED |
| IHImi Houston | Houston | TX | — | ◇ UNVERIFIED |
| INImpact Nano LLC | Devens | MA | — | ◇ UNVERIFIED |
| IWImperial Western Products CO INC | Coachella | CA | — | ◇ UNVERIFIED |
| ICInbra Chemical Company INC | Orangeburg | SC | — | ◇ UNVERIFIED |
| IBIndependence Biodiesel, LLC | Hyde Park | MA | — | ◇ UNVERIFIED |
| INIndependent Nail Company | Taunton | MA | — | ◇ UNVERIFIED |
| IOIndiana Oxide | Brazil | IN | — | ◇ UNVERIFIED |
| ICIndustrial Chemical Company | Wakefield | MA | — | ◇ UNVERIFIED |
| IAIneos Acetyls Chemical Texas City | Texas City | TX | — | ◇ UNVERIFIED |
| INIneos Nitriles | Port Lavaca | TX | — | ◇ UNVERIFIED |
| IOIneos Oligomers | Whiting | IN | — | ◇ UNVERIFIED |
| IUIneos USA LLC | Port Lavaca | TX | — | ◇ UNVERIFIED |
| ITInhance Technologies - Suite 100 | Houston | TX | — | ◇ UNVERIFIED |
| IEInland Empire Regional Composting Author | Rancho Cucamonga | CA | — | ◇ UNVERIFIED |
| IEInland Environmental | Pasco | WA | — | ◇ UNVERIFIED |
| ITInland Terminal, LLC | Woodland | CA | — | ◇ UNVERIFIED |
| IIInnophos, INC. | Geismar | LA | — | ◇ UNVERIFIED |
| INInnophos Nutrition, INC. | North Salt Lake | UT | — | ◇ UNVERIFIED |
| ICInnovative Chemical Corporation, INC. | Cottage Grove | MN | — | ◇ UNVERIFIED |
| ICInnovative Chemical Technologies, INC. | Augusta | GA | — | ◇ UNVERIFIED |
| IWInnovative Water Care, LLC | Dayton | TN | — | ◇ UNVERIFIED |
| IWInnovative Water Care, LLC Dba Solenis | Charleston | TN | — | ◇ UNVERIFIED |
| ICInolex Chem Co/phila | Philadelphia | PA | — | ◇ UNVERIFIED |
| ICInolex Chemical CO | Philadelphia | PA | — | ◇ UNVERIFIED |
| ILInspirtec LLC | Versailles | OH | — | ◇ UNVERIFIED |
