| OFOberon Fuels Kershaw Facility | Brawley | CA | — | ◇ UNVERIFIED |
| OObiter | Champaign | IL | — | ◇ UNVERIFIED |
| OCOccidental Chemical CORP. | Cincinnati | OH | — | ◇ UNVERIFIED |
| OCOccidental Chemical Corporation | Jersey City | NJ | — | ◇ UNVERIFIED |
| OCOccidental Chemical CORP Sauget Plant | Sauget | IL | — | ◇ UNVERIFIED |
| OAOhio Aluminum Chemicals LLC | Hamilton | OH | — | ◇ UNVERIFIED |
| OBOk Biodiesel INC / Sallisaw Plant | Sallisaw | OK | — | ◇ UNVERIFIED |
| OMOklahoma Materials Recycling | Atoka | OK | — | ◇ UNVERIFIED |
| OBOld Bridge Chemicals INC | Old Bridge Twp | NJ | — | ◇ UNVERIFIED |
| OFOligo Factory | Holliston | MA | — | ◇ UNVERIFIED |
| OFOligo Factory INC | Holliston | MA | — | ◇ UNVERIFIED |
| OTOmaha Transloading Corporation | Omaha | NE | — | ◇ UNVERIFIED |
| OOOmni Oxide Indiana Oxide | Brazil | IN | — | ◇ UNVERIFIED |
| ONOndeo Nallo CO | Greer | SC | — | ◇ UNVERIFIED |
| OBOperon Biotechnologies | Huntsville | AL | — | ◇ UNVERIFIED |
 Organic Dyes and Pigments | Providence | RI | — | ◇ UNVERIFIED |
| OEOrion Engineered Carbons LLC - Ivanhoe Carbon Black Plant | Franklin | LA | — | ◇ UNVERIFIED |
| OBOsprey Biotechnics | Sarasota | FL | — | ◇ UNVERIFIED |
| OBOutpost Biodiesel | Grafton | NH | — | ◇ UNVERIFIED |
| OBOvonic Battery Company an Affiliate of Basf Corporation | Troy | MI | — | ◇ UNVERIFIED |
| OEOxbow Energy Solutions | Texas City | TX | — | ◇ UNVERIFIED |
| PBPa Biodiesel/kobuta Yard | Potter Twp | PA | — | ◇ UNVERIFIED |
| PBPacific Biodiesel INC | Kahului | HI | — | ◇ UNVERIFIED |
| PLPacific Light Technologies | Portland | OR | — | ◇ UNVERIFIED |
 Pajarito Powder | Albuquerque | NM | — | ◇ UNVERIFIED |
| PEPampa Energy Center | Pampa | TX | — | ◇ UNVERIFIED |
| PSParticle Solutions LLC | Alachua | FL | — | ◇ UNVERIFIED |
| PCParts Cleaning Technologies LLC | Indianapolis | IN | — | ◇ UNVERIFIED |
| PCPaslode CO | Covington | TN | — | ◇ UNVERIFIED |
| PBPatriot Biofuels | Stuttgart | AR | — | ◇ UNVERIFIED |
| PEPe Ell Hulk Hauling | Aberdeen | WA | — | ◇ UNVERIFIED |
| PSPencco Sealy | Sealy | TX | — | ◇ UNVERIFIED |
| PCPeninsula Chemical CO. | San Mateo | CA | — | ◇ UNVERIFIED |
| PCPenn Carbose | Somerset | PA | — | ◇ UNVERIFIED |
| PGPerihelion Global, INC. | Opp | AL | — | ◇ UNVERIFIED |
| PRPetra Research INC | Alachua | FL | — | ◇ UNVERIFIED |
| PBPflaumer Brothers | Ewing | NJ | — | ◇ UNVERIFIED |
| PIPha Industries | Orange | MA | — | ◇ UNVERIFIED |
| PPPharmaceutical Products INC | Delco | NC | — | ◇ UNVERIFIED |
| PIPharmasyn INC | Libertyville | IL | — | ◇ UNVERIFIED |
| PIPharmatech International INC | Fairfield | NJ | — | ◇ UNVERIFIED |
| PIPhenova INC | Golden | CO | — | ◇ UNVERIFIED |
| PSPhoto Systems INC | Dexter | MI | — | ◇ UNVERIFIED |
| PSPhoto Systems INC Bottcher America INC | Dexter | MI | — | ◇ UNVERIFIED |
| PCPierce Chemicals Morticians Su | Dallas | TX | — | ◇ UNVERIFIED |
| PPPi Proteomics LLC | Huntsville | AL | — | ◇ UNVERIFIED |
| PFPk Farm Fuels, LLC | Woodstock | OH | — | ◇ UNVERIFIED |
| PCPlas2fuel CORP | Kelso | WA | — | ◇ UNVERIFIED |
| PIPlexmar Incorporated | Houston | TX | — | ◇ UNVERIFIED |
| POPmc Organometallix INC - Mobile Site | Axis | AL | — | ◇ UNVERIFIED |
| PFPmp Fermentation Products INC | Peoria | IL | — | ◇ UNVERIFIED |
| PIPolarome International | Newark | NJ | — | ◇ UNVERIFIED |
| PIPolarome International INC. | Jersey City | NJ | — | ◇ UNVERIFIED |
| PCPolo Cleaners 2 | Middletown | RI | — | ◇ UNVERIFIED |
 Polycarbon Industries INC | Ayer | MA | — | ◇ UNVERIFIED |
| PSPolychem Services Inc., LLC | Chicago Heights | IL | — | ◇ UNVERIFIED |
| PAPolymer Additives - Cleveland Plant | Cleveland | OH | — | ◇ UNVERIFIED |
| PAPolymer Applications | Tonawanda | NY | — | ◇ UNVERIFIED |
| PCPolymerine CO INC | New Bedford | MA | — | ◇ UNVERIFIED |
| PLPolymerine LTD | New Bedford, City of | MA | — | ◇ UNVERIFIED |
| PSPoly Scientific | Bay Shore | NY | — | ◇ UNVERIFIED |
| PLPolyventive, LLC | Calhoun | GA | — | ◇ UNVERIFIED |
| PPPorphyrin Products | Logan | UT | — | ◇ UNVERIFIED |
| PAPort Arthur Plant | Port Arthur | TX | — | ◇ UNVERIFIED |
| PSPort Sutton Envirofuels, LLC | Tampa | FL | — | ◇ UNVERIFIED |
| PIPpg Industries Inc/lake Charles Complex | Lake Charles | LA | — | ◇ UNVERIFIED |
| PCPq CORP. | Baltimore | MD | — | ◇ UNVERIFIED |
| PLPq LLC | Clarksville | IN | — | ◇ UNVERIFIED |
| PCPremier Chemical Technologies | Lafayette | LA | — | ◇ UNVERIFIED |
| PMPrince Minerals LLC | Milwaukee | WI | — | ◇ UNVERIFIED |
| PSProfrac Svcs LLC Smithfield Fac | Smithfield | PA | — | ◇ UNVERIFIED |
| PLPromerus LLC | Brecksville | OH | — | ◇ UNVERIFIED |
| PAProviron America INC | Friendly | WV | — | ◇ UNVERIFIED |
| PFPsg - Functional Materials Phoenix | Calhoun | GA | — | ◇ UNVERIFIED |
| PPPuritan Prod | Bethlehem | PA | — | ◇ UNVERIFIED |
| PEPursue Energy Corporation | Brandon | MS | — | ◇ UNVERIFIED |
| QPQuapaw Products | Helena | AR | — | ◇ UNVERIFIED |
| QAQuest Automotive Products | Gnadenhutten | OH | — | ◇ UNVERIFIED |
| RER3 Energy | Cottonwood Falls | KS | — | ◇ UNVERIFIED |
| RCRaj Chemicals Americas LLC | Somerville | NJ | — | ◇ UNVERIFIED |
| RCRaschig Corporation | Richmond | VA | — | ◇ UNVERIFIED |
| RERational Energies Hc INC - Plymouth Facility | Plymouth | MN | — | ◇ UNVERIFIED |
| RCRaybo Chemical CO | Huntington | WV | — | ◇ UNVERIFIED |
| RARaytheon Aircraft Co(was Beech Aircraft) | Boulder | CO | — | ◇ UNVERIFIED |
| RMReade Manufacturing Company | Manchester Twp | NJ | — | ◇ UNVERIFIED |
| RERefrigerant Exchange CORP | Irwindale | CA | — | ◇ UNVERIFIED |
| RAReg Atlanta, LLC | Ellenwood | GA | — | ◇ UNVERIFIED |
| RIReg INC. | Emporia | KS | — | ◇ UNVERIFIED |
| RCReheis Chemical Company | Midlothian | TX | — | ◇ UNVERIFIED |
| RARemet Alcohols INC | La Mirada | CA | — | ◇ UNVERIFIED |
| RERenewable Energy Group, INC. | Okeechobee | FL | — | ◇ UNVERIFIED |
| RPResearch Products INC. of Alabama | Theodore | AL | — | ◇ UNVERIFIED |
| RDResin Designs LLC | Newark | CA | — | ◇ UNVERIFIED |
| RIResolvent INC | Sparks | NV | — | ◇ UNVERIFIED |
| RCRestoration Chemicals | Vincennes | IN | — | ◇ UNVERIFIED |
| RMRieke Metals INC | Lincoln | NE | — | ◇ UNVERIFIED |
| RORiverside Organics | Detroit | MI | — | ◇ UNVERIFIED |
| RMRochester Midland Corporation | Rochester | NY | — | ◇ UNVERIFIED |
| RARohm and Haas Chemicals Llc- Cincinnati Plant | Cincinnati | OH | — | ◇ UNVERIFIED |
| RARohm and Haas Chemicals Llc, Lone Star Plant | Deer Park | TX | — | ◇ UNVERIFIED |
