| NWNu Wood Design | Lake Forest | CA | Chemical Manufacturing325998 | — | ◇ UNVERIFIED |
| OCOakely City | Oakley | UT | Chemical Manufacturing325998 | — | ◇ UNVERIFIED |
| OFOberon Fuels Kershaw Facility | Brawley | CA | Chemical Manufacturing325110 | — | ◇ UNVERIFIED |
| OIOctochem INC | Vandalia | IL | Chemical Manufacturing325998 | — | ◇ UNVERIFIED |
| OIOemeta INC. | Salt Lake City | UT | Chemical Manufacturing325998 | — | ◇ UNVERIFIED |
| OCOlin CORP - Moundsville Plant | Moundsville | WV | Chemical Manufacturing325998 | — | ◇ UNVERIFIED |
| OCOlympic Chemical CORP | Tacoma | WA | Chemical Manufacturing325998 | — | ◇ UNVERIFIED |
| OEOmg Electronic Chemicals | South Plainfield | NJ | Chemical Manufacturing325998 | — | ◇ UNVERIFIED |
| OBOpen Book Extracts | Roxboro | NC | Chemical Manufacturing325998 | — | ◇ UNVERIFIED |
| OIOptiblend Industries-cambridge | Cambridge | OH | Chemical Manufacturing325998 | — | ◇ UNVERIFIED |
| OIOptiblend Industries, INC. | Midland | TX | Chemical Manufacturing325998 | — | ◇ UNVERIFIED |
| OBOwen Biosciences INC | Baton Rouge | LA | Chemical Manufacturing325998 | — | ◇ UNVERIFIED |
| PCPenray Cos INC | Wheeling | IL | Chemical Manufacturing325998 | — | ◇ UNVERIFIED |
| POPerma-fix of South Georgia | Valdosta | GA | Chemical Manufacturing325998 | — | ◇ UNVERIFIED |
| PPPhoenix Products CO | Terryville | CT | Chemical Manufacturing325998 | — | ◇ UNVERIFIED |
| PRPhoenix Resins INC | Cinnaminson | NJ | Chemical Manufacturing325998 | — | ◇ UNVERIFIED |
| PPioneer | Johnston | IA | Chemical Manufacturing325998 | — | ◇ UNVERIFIED |
| PCPirelli Cable and Systems LLC | West Columbia | SC | Chemical Manufacturing325998 | — | ◇ UNVERIFIED |
| PIPka INC Prokrete Ind | Denver | CO | Chemical Manufacturing325998 | — | ◇ UNVERIFIED |
| PCPolyone CORP. | Wynne | AR | Chemical Manufacturing325998 | — | ◇ UNVERIFIED |
| PPP P F Norda INC | East Hanover Township | NJ | Chemical Manufacturing325998 | — | ◇ UNVERIFIED |
| PCPpg Chemfil-troy | Troy | MI | Chemical Manufacturing325998 | — | ◇ UNVERIFIED |
| PPresstek | Des Plaines | IL | Chemical Manufacturing325998 | — | ◇ UNVERIFIED |
| PEPrime Eco Group INC | Wharton | TX | Chemical Manufacturing325998 | — | ◇ UNVERIFIED |
| PCProducto Chemicals | Livonia | MI | Chemical Manufacturing325998 | — | ◇ UNVERIFIED |
| PBPyrotechnique By Grucci, INC. | Radford | VA | Chemical Manufacturing325998 | — | ◇ UNVERIFIED |
| QHQuaker Houghton | Indianapolis | IN | Chemical Manufacturing325998 | — | ◇ UNVERIFIED |
 Qualichem, INC. (plant 3) | Verdi | NV | Chemical Manufacturing325998 | — | ◇ UNVERIFIED |
| QTQuanta Tech LLC | Lacassine | LA | Chemical Manufacturing325998 | — | ◇ UNVERIFIED |
 Radco Industries INC | La Fox | IL | Chemical Manufacturing325998 | — | ◇ UNVERIFIED |
| RHReagents Holdings LLC | Charlotte | NC | Chemical Manufacturing325998 | — | ◇ UNVERIFIED |
| RCReef Chemical CO INC | Odessa | TX | Chemical Manufacturing325998 | — | ◇ UNVERIFIED |
| RRRenew Resources LLC | Rock Hill | SC | Chemical Manufacturing325998 | — | ◇ UNVERIFIED |
| RPRhone Poulenc Incorporated | Philadelphia | PA | Chemical Manufacturing325998 | — | ◇ UNVERIFIED |
| RJR J Recycling LLC | Parkersburg | WV | Chemical Manufacturing325998 | — | ◇ UNVERIFIED |
| RMRobert Morgan INC | Kansas | IL | Chemical Manufacturing325998 | — | ◇ UNVERIFIED |
| RERockwater Energy Solutions | El Reno | OK | Chemical Manufacturing325998 | — | ◇ UNVERIFIED |
| RCRogers CORP - Price | Chandler | AZ | Chemical Manufacturing325998 | — | ◇ UNVERIFIED |
| RURohmax USA | Horsham | PA | Chemical Manufacturing325998 | — | ◇ UNVERIFIED |
| RERomic Environmental Technologies CORP | Palo Alto | CA | Chemical Manufacturing325998 | — | ◇ UNVERIFIED |
| R6Route 66 Vapor | Albuquerque | NM | Chemical Manufacturing325998 | — | ◇ UNVERIFIED |
| RPRycoline Products INC | Chicago | IL | Chemical Manufacturing325998 | — | ◇ UNVERIFIED |
| SHSafc Hitech | Haverhill | MA | Chemical Manufacturing325998 | — | ◇ UNVERIFIED |
| SSSafety-kleen Systems INC | Oakland | CA | Chemical Manufacturing325998 | — | ◇ UNVERIFIED |
| SSSafety-kleen Systems INC - Bridgeport Facility | Bridgeport | CT | Chemical Manufacturing325998 | — | ◇ UNVERIFIED |
| SKSafety Kleen Systems INC - Burlington Facility | Burlington | NJ | Chemical Manufacturing325998 | — | ◇ UNVERIFIED |
| SSSafety-kleen Systems INC - Portland Facility | Portland | CT | Chemical Manufacturing325998 | — | ◇ UNVERIFIED |
| SSSas Solar | Wilmington | NC | Chemical Manufacturing325998 | — | ◇ UNVERIFIED |
| SESelect Energy Services, LLC | Douglas | WY | Chemical Manufacturing325998 | — | ◇ UNVERIFIED |
| SPShield Packaging of Ca Incorporated | Chino | CA | Chemical Manufacturing325120 | — | ◇ UNVERIFIED |
