| PIPuretech INC | Castle Rock | CO | — | ◇ UNVERIFIED |
| PFPurify Fuels, INC. | Otay Mesa | CA | — | ◇ UNVERIFIED |
| PCPuritan-bennett CORP | Richmond | CA | — | ◇ UNVERIFIED |
| PIPurity Isobutylene Plant and Pasadena Terminal | Pasadena | TX | — | ◇ UNVERIFIED |
| PMPurolite Merlin | New Garden, Township of | PA | — | ◇ UNVERIFIED |
| PPPva Plant | La Porte | TX | — | ◇ UNVERIFIED |
| PCPvs Chemicals, INC. | Calvert | AL | — | ◇ UNVERIFIED |
| PRPVS Realty and Equipment, LLC | South Bend | IN | — | ◇ UNVERIFIED |
| PWPwt Warehouse 1 | Vista | CA | — | ◇ UNVERIFIED |
| PWPwt Warehouse 2 | Vista | CA | — | ◇ UNVERIFIED |
| PCPyro-chem Corporation | South Point | OH | — | ◇ UNVERIFIED |
| PLPyxis Lab, INC. | Holliston | MA | — | ◇ UNVERIFIED |
| QVQb Vapor LLC Dba Great Smokin Solutions | New Boston | MI | — | ◇ UNVERIFIED |
| QDQ & D Manufacturing CORP | Hillsboro | OR | — | ◇ UNVERIFIED |
| QQemetica | Westlake | LA | — | ◇ UNVERIFIED |
| QUQemetica US Silica LLC | Barberton | OH | — | ◇ UNVERIFIED |
| QBQlx - Bazine Station | Bazine | KS | — | ◇ UNVERIFIED |
| QMQnity - Michigan Operations | Midland | MI | — | ◇ UNVERIFIED |
| QQsi | Edinburg | VA | — | ◇ UNVERIFIED |
| QTQ Train LLC | Ellenwood | GA | — | ◇ UNVERIFIED |
| Q3Quadratic 3d | Somerville | MA | — | ◇ UNVERIFIED |
| QIQuadratic3d INC | Cambridge | MA | — | ◇ UNVERIFIED |
| QIQuake Industries, INC. | Manhattan | MT | — | ◇ UNVERIFIED |
| QHQuaker Houghton | Indianapolis | IN | — | ◇ UNVERIFIED |
 Qualichem, INC. (plant 3) | Verdi | NV | — | ◇ UNVERIFIED |
| QIQualitek International INC | Addison | IL | — | ◇ UNVERIFIED |
| QBQuality Blending, INC | Anoka | MN | — | ◇ UNVERIFIED |
| QCQuality Compound Manufacturing, LLC | Elyria | OH | — | ◇ UNVERIFIED |
| QCQuality Compound Manufacturing, LLC | Elyria | OH | — | ◇ UNVERIFIED |
| QCQuality Controlled Manufacturing Site | Kent | WA | — | ◇ UNVERIFIED |
| QLQuality Lineals Usa, INC. | Freeport | NY | — | ◇ UNVERIFIED |
| QTQuanta Tech LLC | Lacassine | LA | — | ◇ UNVERIFIED |
| QTQuanta Technologies LLC - Lacassine Site | Lacassine | LA | — | ◇ UNVERIFIED |
 Quantum Chemical CO Clinton Ma Plant | Clinton | MA | — | ◇ UNVERIFIED |
| QPQuapaw Products | Helena | AR | — | ◇ UNVERIFIED |
| QCQueen City Terminals LLC (1431072036) | Cincinnati | OH | — | ◇ UNVERIFIED |
| QEQuenell Enterprises INC | Commerce | CA | — | ◇ UNVERIFIED |
| QAQuest Automotive Products | Gnadenhutten | OH | — | ◇ UNVERIFIED |
| QLQuestspecialty LLC - Myrtle | Wayne | MI | — | ◇ UNVERIFIED |
| QLQuestspecialty Llc-venoy | Wayne | MI | — | ◇ UNVERIFIED |
| QVQuest Vapco Corporation | Brenham | TX | — | ◇ UNVERIFIED |
| QEQuickheet Energy & P | Chesterfield | MO | — | ◇ UNVERIFIED |
| QHQuincy Humane Society | Quincy | IL | — | ◇ UNVERIFIED |
| QQuveon | Gardena | CA | — | ◇ UNVERIFIED |
| RER1b Enterprises, INC. | Fort Bragg | CA | — | ◇ UNVERIFIED |
 Radco Industries INC | La Fox | IL | — | ◇ UNVERIFIED |
| RSRadiator Specialty CO INC | Indian Trail | NC | — | ◇ UNVERIFIED |
| RHRadicigroup High Performance Polymers | Wadsworth | OH | — | ◇ UNVERIFIED |
| RBRain Bird CORP Azusa Mfg Plant | Azusa | CA | — | ◇ UNVERIFIED |
| RCRaj Chemicals Americas LLC | Somerville | NJ | — | ◇ UNVERIFIED |
| RLRak-O-Nizer, LLC | Port Huron | MI | — | ◇ UNVERIFIED |
| RARamtec Associates INC Dba Con-tech Plastics | Brea | CA | — | ◇ UNVERIFIED |
| RAR and R Pool and Spa LLC | Acton | MA | — | ◇ UNVERIFIED |
| RGRanger Gas Gathering LLC | Ranger | TX | — | ◇ UNVERIFIED |
| RCRapid City Apb | Rapid City | SD | — | ◇ UNVERIFIED |
| RIRapid Industries Inc. | Essex | CT | — | ◇ UNVERIFIED |
| RIRapid Industries Inc. | Westfield | NJ | — | ◇ UNVERIFIED |
| RMRapid Marine Fuels | La Porte | TX | — | ◇ UNVERIFIED |
| RRRapid Recovery | Peoria | AZ | — | ◇ UNVERIFIED |
| RBRaritan Bay Slag Superfund Site | Old Bridge Twp | NJ | — | ◇ UNVERIFIED |
| RCRaschig Corporation | Richmond | VA | — | ◇ UNVERIFIED |
| RMRavago Manufacturing Americas | Houston | TX | — | ◇ UNVERIFIED |
| RLRaven Labs | Wellington | FL | — | ◇ UNVERIFIED |
| RPRaven Plant | Baytown | TX | — | ◇ UNVERIFIED |
| RSRaven Sr, INC. (richmond Field Station - Pilot Unit, #158 | Richmond | CA | — | ◇ UNVERIFIED |
| RCRaybo Chemical CO | Huntington | WV | — | ◇ UNVERIFIED |
| RARaytheon Aircraft Co(was Beech Aircraft) | Boulder | CO | — | ◇ UNVERIFIED |
| RBR B C Industries INC | Warwick | RI | — | ◇ UNVERIFIED |
| RMRb Manufacturing, LLC | Hillsborough | NJ | — | ◇ UNVERIFIED |
| RFRca Fiberglass Mfg INC | Compton | CA | — | ◇ UNVERIFIED |
| RARCP America Inc | Tampa | FL | — | ◇ UNVERIFIED |
| RGRdf Gray, LLC | Cimmaron | KS | — | ◇ UNVERIFIED |
| RUReagens USA Bayport Plant | Pasadena | TX | — | ◇ UNVERIFIED |
| RCReagent Chemical & Research INC | Pittsburg | CA | — | ◇ UNVERIFIED |
| RReagents | Charlotte | NC | — | ◇ UNVERIFIED |
| RHReagents Holdings LLC | Charlotte | NC | — | ◇ UNVERIFIED |
| RIRecarbon INC - Fremont | Fremont | CA | — | ◇ UNVERIFIED |
| RERecast Energy Louisville, LLC | Louisville | KY | — | ◇ UNVERIFIED |
| RSRecovery Solutions & Technologies, INC. | Institute | WV | — | ◇ UNVERIFIED |
| RIRecycle INC. | South Plainfield | NJ | — | ◇ UNVERIFIED |
| RMRecycle Midwest INC. | Cleveland | OH | — | ◇ UNVERIFIED |
| RBRed Birch Energy | Bassett | VA | — | ◇ UNVERIFIED |
| RBRed Bird Supply INC | Orange | TX | — | ◇ UNVERIFIED |
| RBRed Bluff No3 Compressor Station | Roswell | NM | — | ◇ UNVERIFIED |
| RVReddy Venture INC Dba Kahlers Werkstat | Dublin | CA | — | ◇ UNVERIFIED |
| RORedneck Outdoor Products | Lamar | MO | — | ◇ UNVERIFIED |
| RCReef Chemical | Snyder | TX | — | ◇ UNVERIFIED |
| RCReef Chemical CO INC | Odessa | TX | — | ◇ UNVERIFIED |
| RPRegal Plastics Supply | Wichita | KS | — | ◇ UNVERIFIED |
| REReg Emporia LLC | Emporia | KS | — | ◇ UNVERIFIED |
| RTRegent Tek Industries, Inc. | Shirley | NY | — | ◇ UNVERIFIED |
| RIReg INC | Cairo | IL | — | ◇ UNVERIFIED |
| ROReg Okeechobee | Okeechobee | FL | — | ◇ UNVERIFIED |
| RCReichhold Chemicals INC | Charlotte | NC | — | ◇ UNVERIFIED |
| RCReichhold Chemicals INC | Newark | NJ | — | ◇ UNVERIFIED |
| RCReichhold Chem INC. | Baltimore | MD | — | ◇ UNVERIFIED |
| REReichhold Environmental Response Trust | Gulfport | MS | — | ◇ UNVERIFIED |
| RIReichhold INC | Bridgeville | PA | — | ◇ UNVERIFIED |
| RIReichhold INC | Azusa | CA | — | ◇ UNVERIFIED |
| RRReichhold Reactive Polymers Division Houston Plant | Houston | TX | — | ◇ UNVERIFIED |
