| 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 |
| 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 |
| HGHey Grill Hey LLC | Saint George | UT | — | ◇ UNVERIFIED |
| HVHidden Valley Transfer Station and Landfill | Puyallup | WA | — | ◇ UNVERIFIED |
| HEHielscher Enterprises LLC | Pueblo | CO | — | ◇ UNVERIFIED |
| HEHighlands Ethanol, LLC | Lorida | FL | — | ◇ UNVERIFIED |
| HQHigh Quality Organics, INC. | Reno | NV | — | ◇ UNVERIFIED |
| HRHigh Ridge Brands LLC | Carson | CA | — | ◇ UNVERIFIED |
| HSHigh Sierra Corp | Chippewa Falls | WI | — | ◇ UNVERIFIED |
| HIHigley Industries | Dubuque | IA | — | ◇ UNVERIFIED |
| HMHigley - Mckellips Business Center | Mesa | AZ | — | ◇ UNVERIFIED |
| HIHiketron Inc | Brookshire | TX | — | ◇ UNVERIFIED |
| HPHinkle Properties LLC | Kalamazoo | MI | — | ◇ UNVERIFIED |
| HRHi-tech Recycling | Redding | CA | — | ◇ UNVERIFIED |
| HCHobart CORP | Kansas City | KS | — | ◇ UNVERIFIED |
| HIHocking International Laboratories | San Marcos | CA | — | ◇ UNVERIFIED |
| HIHocking International Laboratories INC | Vista | CA | — | ◇ UNVERIFIED |
| HCHoechst Celanese Chemical INC | Houston | TX | — | ◇ UNVERIFIED |
| HPHoff & Pepper Co, LLC | Chattanooga | TN | — | ◇ UNVERIFIED |
| HWHoly Water Solutions, LLC D/b/a Zero Hazard | Lewisberry | PA | — | ◇ UNVERIFIED |
| HAHome and Body CO | Huntington Beach | CA | — | ◇ UNVERIFIED |
| HAHome and Body CO | Huntington Beach | CA | — | ◇ UNVERIFIED |
| HEHoneywell El Segundo Erd Treatment System | Manhattan Beach | CA | — | ◇ UNVERIFIED |
| HFHoneywell Frankford | Philadelphia | PA | — | ◇ UNVERIFIED |
| HIHoneywell International INC | Portland | OR | — | ◇ UNVERIFIED |
| HIHoneywell International INC | Hopewell | VA | — | ◇ UNVERIFIED |
| HIHoneywell International INC | El Segundo | CA | — | ◇ UNVERIFIED |
| HOHoneywell Offsite Wells: Manhattan Country Club | Manhattan Beach | CA | — | ◇ UNVERIFIED |
| HOHoneywell Offsite Wells Oak Avenue | Manhattan Beach | CA | — | ◇ UNVERIFIED |
| HTHorizon Technology Site | Lake Oswego | OR | — | ◇ UNVERIFIED |
| HWHot Wax Distributors INC | Stanton | CA | — | ◇ UNVERIFIED |
| HIHoughton Intl INC | Crestwood | IL | — | ◇ UNVERIFIED |
| HTHudson Terminal Railroad/boulder Scientific Company | Hudson | CO | — | ◇ UNVERIFIED |
| HCHuey Chemical CORP | Tampa | FL | — | ◇ UNVERIFIED |
| HDHuish Detergents INC. | Riverton | WY | — | ◇ UNVERIFIED |
| HDHuish Detergents Incorporated | Dyersburg | TN | — | ◇ UNVERIFIED |
| HGHumic Growth Solutions | Jacksonville | FL | — | ◇ UNVERIFIED |
| HCHunt & Company, Inc. | Benson | NC | — | ◇ UNVERIFIED |
| HCHunter Columbia Business Park | Northridge | CA | — | ◇ UNVERIFIED |
| HCHuntington Calibration Dba Huntington Scale | Chatsworth | CA | — | ◇ UNVERIFIED |
| HHuntsman | Carson | CA | — | ◇ UNVERIFIED |
| HHuntsman | Corona | CA | — | ◇ UNVERIFIED |
| HCHuntsman @ Composites One | Salt Lake City | UT | — | ◇ UNVERIFIED |
| HPHuntsman Petrochemical Dayton Plant | Dayton | TX | — | ◇ UNVERIFIED |
| HTHuntsman - Total Distribution Warehouse | Charlotte | NC | — | ◇ UNVERIFIED |
| HSHydro-chem Systems, INC. | Grand Rapids | MI | — | ◇ UNVERIFIED |
| HCHydrol Chemical Company | Yeadon | PA | — | ◇ UNVERIFIED |
| HHygco | Newbury Park | CA | — | ◇ UNVERIFIED |
| HHygco | Tarzana | CA | — | ◇ UNVERIFIED |
| IAIci Americas INC Charlotte Plant | Charlotte | NC | — | ◇ UNVERIFIED |
| IAIcl-ip America, INC. | Belmont | NC | — | ◇ UNVERIFIED |
| ILIconic Labs LLC | Westlake | OH | — | ◇ UNVERIFIED |
| ISI.C. Scientific Solutions | Westlake | OH | — | ◇ UNVERIFIED |
| ILIflea LLC | Crete | IL | — | ◇ UNVERIFIED |
| IHImi Houston | Houston | TX | — | ◇ UNVERIFIED |
| IWImperial Western Products CO INC | Coachella | CA | — | ◇ UNVERIFIED |
| ICInbra Chemical Company INC | Orangeburg | SC | — | ◇ UNVERIFIED |
| IDIncienso De Santa Fe | Albuquerque | NM | — | ◇ UNVERIFIED |
| IJIndeck Jonesboro Energy Center | Jonesboro | ME | — | ◇ UNVERIFIED |
| IBIndependence Biodiesel, LLC | Hyde Park | MA | — | ◇ UNVERIFIED |
| INIndependent Nail Company | Taunton | MA | — | ◇ UNVERIFIED |
 Indorama Ventures Oxides LLC | Alvin | TX | — | ◇ UNVERIFIED |
| ILIndusco, LTD. | Greensboro | NC | — | ◇ 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 |
| IHInfluance Hair Care, LLC | Reidsville | NC | — | ◇ UNVERIFIED |
| ITInhance Technologies - Suite 100 | Houston | TX | — | ◇ UNVERIFIED |
| ICInnovating Concepts Laboratories | Jurupa Valley | CA | — | ◇ UNVERIFIED |
| IFInnovative Food Processors INC | Faribault | MN | — | ◇ UNVERIFIED |
| ICInolex Chem Co/phila | Philadelphia | PA | — | ◇ UNVERIFIED |
| ICInolex Chemical CO | Philadelphia | PA | — | ◇ UNVERIFIED |
| IOIntech Organics Usa, INC. (c/o Fumigation Service & Supply Inc.) | Chicago | IL | — | ◇ UNVERIFIED |
| IDIntegrated Dna Technologies | San Diego | CA | — | ◇ UNVERIFIED |
| IDIntegrated Dna Technologies - 2812 Commerce Dr | Coralville | IA | — | ◇ UNVERIFIED |
| IDIntegrated Dna Technologies INC | Coralville | IA | — | ◇ UNVERIFIED |
| IBIntegrity Biofuels | Morristown | IN | — | ◇ UNVERIFIED |
| IFInternational Flavors and Fragrances INC - Carrollton Center of Excellence | Carrollton | TX | — | ◇ UNVERIFIED |
| IFInternational Flavors & Fragrances | Keyport | NJ | — | ◇ UNVERIFIED |
| IFInternational Flavors & Fragrances | Augusta | GA | — | ◇ UNVERIFIED |
| IIIntuit, INC. | Mountain View | CA | — | ◇ UNVERIFIED |
| IOInventek of Mt Laurel | Mount Laurel | NJ | — | ◇ UNVERIFIED |
| ISInvista S.a.r.l. | Orange | TX | — | ◇ UNVERIFIED |
| INInv Nylon Chemicals Americas - Victoria Site | Victoria | TX | — | ◇ UNVERIFIED |
| ICIpax Cleanogel INC | Detroit | MI | — | ◇ UNVERIFIED |
| ICIp Callison and Sons Chehalis | Chehalis | WA | — | ◇ UNVERIFIED |
| ICIronworks Collective INC | Los Angeles | CA | — | ◇ UNVERIFIED |
| ISIsland Soap CO LLC | Kapaa | HI | — | ◇ UNVERIFIED |
| ICIsp Chemicals LLC | Calvert City | KY | — | ◇ UNVERIFIED |
| ILIspice, LLC | Jackson | AL | — | ◇ UNVERIFIED |
| ICItaconix CORP | Stratham | NH | — | ◇ UNVERIFIED |
