| MCMonsanto CO | Kenilworth | NJ | — | ◇ UNVERIFIED |
| MCMontgomery Chem Ltd/conshohocken | Conshohocken | PA | — | ◇ UNVERIFIED |
| MCMontrose Chemical Corporation of Ca -henderson, Nevada Site | Henderson | NV | — | ◇ UNVERIFIED |
| MCMorgan County Renewable Fuels, LLC | Log Lane Village, 3.5 Mi Sw of | CO | — | ◇ UNVERIFIED |
| MIMorton International Incorporated | Taylors | SC | — | ◇ UNVERIFIED |
| MBMound Bayou Refinery INC | Mound Bayou | MS | — | ◇ UNVERIFIED |
| MMMountain Marble Manufacturing INC | Prescott Valley | AZ | — | ◇ UNVERIFIED |
| MFMpc - Fairborn | Fairborn | OH | — | ◇ UNVERIFIED |
| MPMrc Polymers INC | Chicago | IL | — | ◇ UNVERIFIED |
| MIMylec INC | Winchendon | MA | — | ◇ UNVERIFIED |
| NINA Industries Pasadena | Seabrook | TX | — | ◇ UNVERIFIED |
| NCNalco CO | Hopewell | VA | — | ◇ UNVERIFIED |
| NCNapco Chemical Co., INC. | Spring | TX | — | ◇ UNVERIFIED |
| NCNational Casein | Tyler | TX | — | ◇ UNVERIFIED |
| NPNational Patent Development CO Hydron Me | New Brunswick | NJ | — | ◇ UNVERIFIED |
| NPNational Peening Incorporated | Salem | VA | — | ◇ UNVERIFIED |
| NPNational Plastics Color | Valley Center | KS | — | ◇ UNVERIFIED |
| NTNational Trail Biodiesel Group LLC | Newton | IL | — | ◇ UNVERIFIED |
| NGNatural Gas Odorizing, INC. | Baytown | TX | — | ◇ UNVERIFIED |
| NSNeel Schaffer Inc, Jitney Jr Number 617 | Tchula | MS | — | ◇ UNVERIFIED |
| NBNelson Biotechnologies INC | Flagstaff | AZ | — | ◇ UNVERIFIED |
| NRNeo Rare Metals (ok), LLC. | Quapaw | OK | — | ◇ UNVERIFIED |
| NCNeville Chemical CO | Anaheim | CA | — | ◇ UNVERIFIED |
| NANewark Armed Forces Reserve Center | Newark | DE | — | ◇ UNVERIFIED |
| NENew Eden Energy LLC | Saint Cloud | FL | — | ◇ UNVERIFIED |
| NENew England Laminates CO INC | Walden | NY | — | ◇ UNVERIFIED |
| NENew England Plastic | Norton | MA | — | ◇ UNVERIFIED |
| NMNew Model Cleaners INC. | Boston | MA | — | ◇ UNVERIFIED |
| NPNew Pig CORP | Tipton | PA | — | ◇ UNVERIFIED |
| NDNext Diesel | Adrian | MI | — | ◇ UNVERIFIED |
| NPNiche Polymer LLC | Ravenswood | WV | — | ◇ UNVERIFIED |
| NPNickelson Plastics INC | Johnson City | TN | — | ◇ UNVERIFIED |
| NCNippon Carbide Industries | Greenville | SC | — | ◇ UNVERIFIED |
| NSNjdep @ Syncon Resins INC | Kearny | NJ | — | ◇ UNVERIFIED |
| NCNorphlet Chemical, INC. | Norphlet | AR | — | ◇ UNVERIFIED |
| NCNorth Charleston Distribution Terminal | Charleston | WV | — | ◇ UNVERIFIED |
| NINorthern Industries | Coventry | RI | — | ◇ UNVERIFIED |
| NPNorthwestern Plating Works | Chicago | IL | — | ◇ UNVERIFIED |
| NSNorthwest Solvents & Supply, INC. | Eugene | OR | — | ◇ UNVERIFIED |
| NDNotre Dame Investors INC - Jennings Refinery | Jennings | LA | — | ◇ UNVERIFIED |
| NCNottingham Company | Atlanta | GA | — | ◇ UNVERIFIED |
| NFNouryon Functional Chemicals Burt Plant | Burt | NY | — | ◇ UNVERIFIED |
| NPNouryon Pulp and Performance Chemicals LLC | Augusta | GA | — | ◇ UNVERIFIED |
| NPNouryon Pulp & Performance Chemicals | Duluth | GA | — | ◇ UNVERIFIED |
| NCNovachem Corporation | High Point | NC | — | ◇ UNVERIFIED |
| NCNova Chemicals | Channahon | IL | — | ◇ UNVERIFIED |
| NCNova Chemicals INC | Belpre | OH | — | ◇ UNVERIFIED |
| NCNova Chemicals INC | Indian Orchard | MA | — | ◇ UNVERIFIED |
| NCNovacor Chemical INC | Leominster | MA | — | ◇ UNVERIFIED |
| NPNova Pressroom Products | Jacksonville | FL | — | ◇ UNVERIFIED |
| NBNovozymes Biologicals INC - South Broad Street | Salem | VA | — | ◇ UNVERIFIED |
| NCNuchem Corporation | Allentown | PA | — | ◇ UNVERIFIED |
| NINuset Industries, Orrco, 02 Bl (nuseti) | Salt Lake City | UT | — | ◇ UNVERIFIED |
| NBNutrition & Biosciences USA 1, Llc, Midland | Midland | MI | — | ◇ UNVERIFIED |
| NBNutrition & Biosciences USA 1 LLC - Plaquemine Methocel | Plaquemine | LA | — | ◇ UNVERIFIED |
| OFOberon Fuels Kershaw Facility | Brawley | CA | — | ◇ UNVERIFIED |
| OObiter | Champaign | IL | — | ◇ UNVERIFIED |
| OCOccidental Chemical Corporation | Jersey City | NJ | — | ◇ UNVERIFIED |
| OCOccidental Chemical CORP Sauget Plant | Sauget | IL | — | ◇ UNVERIFIED |
| OAOcean Air Environmental | Lakeland | FL | — | ◇ UNVERIFIED |
| OROcean Reef Pools INC. | Oak Hill | FL | — | ◇ UNVERIFIED |
| OAOhio Aluminum Chemicals LLC | Hamilton | OH | — | ◇ UNVERIFIED |
| OMOklahoma Materials Recycling | Atoka | OK | — | ◇ UNVERIFIED |
| OIOkon INC | Lakewood | CO | — | ◇ UNVERIFIED |
| OBOld Bridge Chemicals INC | Old Bridge Twp | NJ | — | ◇ UNVERIFIED |
| OTOmaha Transloading Corporation | Omaha | NE | — | ◇ UNVERIFIED |
| OOOmni Oxide Indiana Oxide | Brazil | IN | — | ◇ UNVERIFIED |
| OSOmnova Solutions, INC. | Dalton | GA | — | ◇ UNVERIFIED |
 Organic Dyes and Pigments | Providence | RI | — | ◇ UNVERIFIED |
| OBOrigin Baltimore Recycling, LLC | Curtis Bay | MD | — | ◇ UNVERIFIED |
| OEOrion Engineered Carbons LLC - Ivanhoe Carbon Black Plant | Franklin | LA | — | ◇ UNVERIFIED |
| OBOsprey Biotechnics | Sarasota | FL | — | ◇ UNVERIFIED |
| OPOvation Polymers | Medina | OH | — | ◇ UNVERIFIED |
| OPOvation Polymer Technology and Engineered Materials | Medina | OH | — | ◇ UNVERIFIED |
| OEOxbow Energy Solutions | Texas City | TX | — | ◇ UNVERIFIED |
| PBPacific Biodiesel INC | Kahului | HI | — | ◇ UNVERIFIED |
| PLPacific Light Technologies | Portland | OR | — | ◇ UNVERIFIED |
| PLPactiv LLC | Bedford Park | IL | — | ◇ UNVERIFIED |
| PPPactiv Packaging INC | Mineral Wells | WV | — | ◇ UNVERIFIED |
 Pajarito Powder | Albuquerque | NM | — | ◇ UNVERIFIED |
| PEPampa Energy Center | Pampa | TX | — | ◇ UNVERIFIED |
| PTParadis Tank Battery #3 | Paradis | LA | — | ◇ UNVERIFIED |
| PSParticle Solutions LLC | Alachua | FL | — | ◇ UNVERIFIED |
| PCParts Cleaning Technologies LLC | Indianapolis | IN | — | ◇ UNVERIFIED |
| PWPar West Refinery | Kapolei | HI | — | ◇ UNVERIFIED |
| PPPasadena Performance Products | Pasadena | TX | — | ◇ UNVERIFIED |
| PCPaslode CO | Covington | TN | — | ◇ UNVERIFIED |
| PGPd Glycol Beaumont Plant | Beaumont | TX | — | ◇ UNVERIFIED |
| PFPeden Facility | Fort Worth | TX | — | ◇ UNVERIFIED |
| PEPe Ell Hulk Hauling | Aberdeen | WA | — | ◇ UNVERIFIED |
| PSPencco Sealy | Sealy | TX | — | ◇ UNVERIFIED |
| PCPenetone CORP | Tenafly | NJ | — | ◇ UNVERIFIED |
| PCPeninsula Chemical CO. | San Mateo | CA | — | ◇ UNVERIFIED |
| PQPennzoil Quaker State | Rouseville | PA | — | ◇ UNVERIFIED |
| PDPermuthane Div of Stahl USA | Peabody | MA | — | ◇ UNVERIFIED |
| PMPetersen Molding Corporation | Norwalk | CA | — | ◇ UNVERIFIED |
| PSPeterson Sys Intl | Duarte | CA | — | ◇ UNVERIFIED |
| PRPetra Research INC | Alachua | FL | — | ◇ UNVERIFIED |
| PCPetromax Carnegie Plt | Carnegie | PA | — | ◇ UNVERIFIED |
| PSPetro Star INC Valdez Refinery | Valdez | AK | — | ◇ UNVERIFIED |
