| PCPolymerine CO INC | New Bedford | MA | — | ◇ UNVERIFIED |
| PLPolymerine LTD | New Bedford, City of | MA | — | ◇ UNVERIFIED |
| PSPoly Scientific | Bay Shore | NY | — | ◇ UNVERIFIED |
| PEPolytex Environmental Inks LTD | Bronx | NY | — | ◇ UNVERIFIED |
| PLPolyventive, LLC | Calhoun | GA | — | ◇ UNVERIFIED |
| PPPorphyrin Products | Logan | UT | — | ◇ UNVERIFIED |
| PAPort Arthur Plant | Port Arthur | TX | — | ◇ UNVERIFIED |
| PIPpg Industries Inc/lake Charles Complex | Lake Charles | LA | — | ◇ UNVERIFIED |
| PIPpg Industries-packaging Ink Plant | Arvada | CO | — | ◇ 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 |
| RCRaj Chemicals Americas LLC | Somerville | NJ | — | ◇ UNVERIFIED |
| RKRa Kerley Ink Engineers INC | Broadview | IL | — | ◇ 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 |
| RARemet Alcohols INC | La Mirada | CA | — | ◇ UNVERIFIED |
| RERenewable Energy Group, INC. | Okeechobee | FL | — | ◇ UNVERIFIED |
| RDResin Designs LLC | Newark | CA | — | ◇ UNVERIFIED |
| RCRestoration Chemicals | Vincennes | IN | — | ◇ UNVERIFIED |
| RMRieke Metals INC | Lincoln | NE | — | ◇ UNVERIFIED |
| RDRja Dispersions LLC | Hudson | WI | — | ◇ UNVERIFIED |
| RARohm and Haas Chemicals Llc- Cincinnati Plant | Cincinnati | OH | — | ◇ UNVERIFIED |
| RARohm and Haas Chemicals Llc, Lone Star Plant | Deer Park | TX | — | ◇ UNVERIFIED |
| RHRohm & Haas Electronic Materials LLC | Freeport | NY | — | ◇ UNVERIFIED |
| RCRudolf-venture Chemicals | Rock Hill | SC | — | ◇ UNVERIFIED |
| RPRycoline Products INC | Clifton | NJ | — | ◇ UNVERIFIED |
| SKSafety Kleen Systems INC - South Plainfield Facility | South Plainfield | NJ | — | ◇ UNVERIFIED |
| SWSaltville Waste Disposal Ponds | Saltville | VA | — | ◇ UNVERIFIED |
| SESamsung Electronics CORP | Woodbury | MN | — | ◇ UNVERIFIED |
| SCSanford CORP | Bellwood | IL | — | ◇ UNVERIFIED |
| SISantec INC | Linden | NJ | — | ◇ UNVERIFIED |
| SNSasol North America INC - Lab Plant | Westlake | LA | — | ◇ UNVERIFIED |
| SASauget Area 2 Sites Group | Sauget | IL | — | ◇ UNVERIFIED |
| SDScientific Design CO INC | Little Ferry | NJ | — | ◇ UNVERIFIED |
| SCSelect Chemicals, LTD. | Yorktown | TX | — | ◇ UNVERIFIED |
