| IWInstitute Wv Facility | Institute | WV | — | ◇ UNVERIFIED |
| ICIntergulf CORP Lonestar Ecology LLC (lonstr) | Pasadena | TX | — | ◇ UNVERIFIED |
| IBInterline Brands Dc - Huntington #4960 | Huntington | WV | — | ◇ UNVERIFIED |
| ICInterplastic CORP | Hawthorne | CA | — | ◇ UNVERIFIED |
| IHIntertrade Holdings, INC. | Copperhill | TN | — | ◇ UNVERIFIED |
| IRIofina Resources, INC. (i011) | Dover | OK | — | ◇ UNVERIFIED |
| IRIofina Resources, INC. (i02) | Alva | OK | — | ◇ UNVERIFIED |
| IRIofina Resources, INC. (io10) | Kingfisher | OK | — | ◇ UNVERIFIED |
| IRIofina Resources, INC. (io4) | Burlington | OK | — | ◇ UNVERIFIED |
| IRIofina Resources, INC. (io5) | Alva | OK | — | ◇ UNVERIFIED |
| IRIofina Resources, INC. (io6) | Alva | OK | — | ◇ UNVERIFIED |
| IRIofina Resources, INC. (io7) | Dacoma | OK | — | ◇ UNVERIFIED |
| IRIofina Resources, INC. (io8) | Arnett | OK | — | ◇ UNVERIFIED |
| IRIofina Resources, INC. (io9) | Kingfisher | OK | — | ◇ UNVERIFIED |
| JEJareson Enterprises Arizona, LLC | Casa Grande | AZ | — | ◇ UNVERIFIED |
| JCJost Chemical | Overland | MO | — | ◇ UNVERIFIED |
| JCJwa Co., LTD. | Kokomo | IN | — | ◇ UNVERIFIED |
| KPK2 Pure Solutions - Pittsburg Plant | Pittsburg | CA | — | ◇ UNVERIFIED |
| KCKeavys Corner LLC | Sebring | FL | — | ◇ UNVERIFIED |
| KPKemiron Pacific INC | Fontana | CA | — | ◇ UNVERIFIED |
| KBKetjen Bayport Plant | Pasadena | TX | — | ◇ UNVERIFIED |
| K1Kre 1221 Broadway Owners LLC | Oakland | CA | — | ◇ UNVERIFIED |
| KAKuraray America, INC | Pasadena | TX | — | ◇ UNVERIFIED |
| LCLab Chocolate Bayou Plant | Alvin | TX | — | ◇ UNVERIFIED |
| LCLanxess CORP @ O'hare Airport Ord 838 | Chicago | IL | — | ◇ UNVERIFIED |
| LOLanxess Oxone Memphis Plant | Memphis | TN | — | ◇ UNVERIFIED |
| LNLi-cycle North America Hub INC | Rochester | NY | — | ◇ UNVERIFIED |
| LTLimtech Technologies, INC. | Nahunta | GA | — | ◇ UNVERIFIED |
| LMLiquid Minerals Group, INC. | New Waverly | TX | — | ◇ UNVERIFIED |
| LTLi Tungsten Superfund Site | Glen Cove | NY | — | ◇ UNVERIFIED |
| LAL.L. Associates, LLC | Daphne | AL | — | ◇ UNVERIFIED |
 Luxfer Magtech Saxonburg Plt | Saxonburg | PA | — | ◇ UNVERIFIED |
| LMLuxfer Mel Technologies Dba Mel Chemical-treatment Plant | Flemington | NJ | — | ◇ UNVERIFIED |
| LPLynx Processing Facility | Robstown | TX | — | ◇ UNVERIFIED |
| MCMacdonald Carbide CO INC | Baldwin Park | CA | — | ◇ UNVERIFIED |
| MIMadison Industries INC | Old Bridge | NJ | — | ◇ UNVERIFIED |
| MCMagnum Colors LLC | Venetia | PA | — | ◇ UNVERIFIED |
| MRMaguire Refining | Minneapolis | MN | — | ◇ UNVERIFIED |
| MLMarathon LLC | Fontana | CA | — | ◇ UNVERIFIED |
| MLMarathon LLC | Martinez | CA | — | ◇ UNVERIFIED |
| MGMaroon Group, LLC | Gardena | CA | — | ◇ UNVERIFIED |
| MBMaster Builders Solutions Construction Systems US | Newark | CA | — | ◇ UNVERIFIED |
| MMaterion | Milwaukee | WI | — | ◇ UNVERIFIED |
| MCM Chemical Manufacturing | Baytown | TX | — | ◇ UNVERIFIED |
| MCMel Chemicals INC | Flemington | NJ | — | ◇ UNVERIFIED |
| MPMemc Pasadena, Incorporated | Pasadena | TX | — | ◇ UNVERIFIED |
| MLMenon Laboratories | Somerville | MA | — | ◇ UNVERIFIED |
| MAMetals and Additives | Brazil | IN | — | ◇ UNVERIFIED |
| MAMetals and Additives LLC Warehouse | Brazil | IN | — | ◇ UNVERIFIED |
| MPMgc Pure Chemicals America INC | Forest Grove | OR | — | ◇ UNVERIFIED |
| MPMiami Prods & Chemical CO | Fairborn | OH | — | ◇ UNVERIFIED |
| MAMichigan Additive Technologies INC. | Erie | MI | — | ◇ UNVERIFIED |
| MCMid-america Conversion Services - Depleted Uranium Hexfloride Conversion Facility | Kevil | KY | — | ◇ UNVERIFIED |
| MCMontgomery Chem Ltd/conshohocken | Conshohocken | PA | — | ◇ UNVERIFIED |
| MCMoretex Chemical Products, INC. | Spartanburg | SC | — | ◇ UNVERIFIED |
| MLMoses Lake Industries | Mesa | AZ | — | ◇ UNVERIFIED |
| MAMundell & Associates, INC. | Indianapolis | IN | — | ◇ UNVERIFIED |
| NWNalco Water Marion Facility | Marion | VA | — | ◇ UNVERIFIED |
| NTNanophase Technologies CORP | Burr Ridge | IL | — | ◇ UNVERIFIED |
| NINanosys Incs | Milpitas | CA | — | ◇ UNVERIFIED |
| NLNaprotec LLC | Chattanooga | TN | — | ◇ UNVERIFIED |
| NCNational Chloride CO of America | Amboy | CA | — | ◇ UNVERIFIED |
| NSNatural Soda | Rifle | CO | — | ◇ UNVERIFIED |
| NRNeo Rare Metals (ok), LLC. | Quapaw | OK | — | ◇ UNVERIFIED |
| NNewchem | New Cumberland | WV | — | ◇ UNVERIFIED |
| NLNexpera LLC - Nexpera-burnside Facility | Darrow | LA | — | ◇ UNVERIFIED |
| NPNouryon Pulp and Performance Chemicals LLC | Augusta | GA | — | ◇ UNVERIFIED |
| NDNovaphos Development LLC | Fort Meade | FL | — | ◇ UNVERIFIED |
| NNutrablend | Madera | CA | — | ◇ UNVERIFIED |
| OCOccidental Chemical CORP | Mobile | AL | — | ◇ UNVERIFIED |
| OCOccidental Chemical CORP | New Castle | DE | — | ◇ UNVERIFIED |
| OCOccidental Chemical CORP. | Niagara Falls | NY | — | ◇ UNVERIFIED |
| OCOccidental Chemical Corporation | Jersey City | NJ | — | ◇ UNVERIFIED |
| OCOccidental Chemical Corporation – Augusta Silicate Plant | Augusta | GA | — | ◇ UNVERIFIED |
| OAOci Alabama LLC | Decatur | AL | — | ◇ UNVERIFIED |
| OAOhio Aluminum Chemicals LLC | Hamilton | OH | — | ◇ UNVERIFIED |
| OMOklahoma Materials Recycling | Atoka | OK | — | ◇ UNVERIFIED |
| OSOklahoma Steel Castings | Tulsa | OK | — | ◇ UNVERIFIED |
| OBOld Bridge Chemicals INC | Old Bridge Twp | NJ | — | ◇ UNVERIFIED |
| OBOlin - Blue Cube Operations, LLC | Plaquemine | LA | — | ◇ UNVERIFIED |
| OCOlin CORP Lake Charles Plant | Westlake | LA | — | ◇ UNVERIFIED |
| OCOlin Corporation | Manchester | TN | — | ◇ UNVERIFIED |
| OIOmya, INC. (n7709) | Escanaba | MI | — | ◇ UNVERIFIED |
| OCOrange Carbon Black Plant | Orange | TX | — | ◇ UNVERIFIED |
| OEOrion Engineered Carbons, LLC. | Franklin | LA | — | ◇ UNVERIFIED |
| OEOrion Engineered Carbons LLC - Ivanhoe Carbon Black Plant | Franklin | LA | — | ◇ UNVERIFIED |
| OEOxbow Energy Solutions | Texas City | TX | — | ◇ UNVERIFIED |
| PPP4 Production LLC (tv Facility) | Soda Springs | ID | — | ◇ UNVERIFIED |
| PCPacific Compounding Pharmacy | Stockton | CA | — | ◇ UNVERIFIED |
 Pacific Industrial Development Corporation | Spartanburg | SC | — | ◇ UNVERIFIED |
| PLPacific Light Technologies | Portland | OR | — | ◇ UNVERIFIED |
| PPPact Pharma INC | Riverside | CA | — | ◇ UNVERIFIED |
 Pajarito Powder | Albuquerque | NM | — | ◇ UNVERIFIED |
| PDPampa Development & Manufacturing Center | Pampa | TX | — | ◇ UNVERIFIED |
| PCPaslode CO | Covington | TN | — | ◇ UNVERIFIED |
| PSPencco Sealy | Sealy | TX | — | ◇ UNVERIFIED |
| PSPerimeter Solutions Burns Seat Base | Burns | OR | — | ◇ UNVERIFIED |
| PSPerimeter Solutions LP | Santa Rosa | CA | — | ◇ UNVERIFIED |
| PSPerimeter Solutions Ontario Seat Base | Ontario Heights | OR | — | ◇ UNVERIFIED |
| PTPeroxychem Tonawanda Plant | Tonawanda | NY | — | ◇ UNVERIFIED |
