| PCParamelt CORP | Rosemead | CA | — | ◇ UNVERIFIED |
| PPPeerless Products | Fort Scott | KS | — | ◇ UNVERIFIED |
| PSPennzoil-quaker State CO (dba Sopus Products Lalp) | Wilmington | CA | — | ◇ UNVERIFIED |
| PSPennzoil-quaker State (dba Sopus Products) | Newell | WV | — | ◇ UNVERIFIED |
| PPPerkins Products INC | Bedford Park | IL | — | ◇ UNVERIFIED |
| PDPetrochoice Dynamo, LLC | Indianapolis | IN | — | ◇ UNVERIFIED |
| PSPetroclean Solutions LLC | Farmerville | LA | — | ◇ UNVERIFIED |
| PCPetrolite CORP Bakersfield Blend Plant | Bakersfield | CA | — | ◇ UNVERIFIED |
| P6Phillips 66 Company | Hartford | IL | — | ◇ UNVERIFIED |
| P6Phillips 66 - Los Angeles Terminal and Lubes Plant | Los Angeles | CA | — | ◇ UNVERIFIED |
| P6Phillips 66 Pipeline Portland Terminal & Lubricants | Portland | OR | — | ◇ UNVERIFIED |
| P6Phillips 66 Savannah Lubricants Terminal | Savannah | GA | — | ◇ UNVERIFIED |
| P6Phillips 66 Spectrum CORP. Selmer Lubricants Plant | Selmer | TN | — | ◇ UNVERIFIED |
| PCPico Chemical CORP | Chicago Heights | IL | — | ◇ UNVERIFIED |
| PIPlating International INC | Franklin Park | IL | — | ◇ UNVERIFIED |
| PIPlaze INC | Saint Clair | MO | — | ◇ UNVERIFIED |
| PCPlz CORP | Bridgeview | IL | — | ◇ UNVERIFIED |
| PIPolychemie INC | Pearlington | MS | — | ◇ UNVERIFIED |
| PIPolychemie INC. - Wayne, Mi | Wayne | MI | — | ◇ UNVERIFIED |
| PIPolymerics INC | Kent | OH | — | ◇ UNVERIFIED |
| PDPolyventive ? Dalton South | Dalton | GA | — | ◇ UNVERIFIED |
| PLPolyventive, LLC | Calhoun | GA | — | ◇ UNVERIFIED |
| PAPort Allen Plant | Port Allen | LA | — | ◇ UNVERIFIED |
| PFPort Fourchon North | Golden Meadow | LA | — | ◇ UNVERIFIED |
| PEPpg Euclid Pretreatment & Specialty Prods | Euclid | OH | — | ◇ UNVERIFIED |
| PIProchemco INC. | Lake Station | IN | — | ◇ UNVERIFIED |
| PWProchem Water LLC | Elliston | VA | — | ◇ UNVERIFIED |
| PAPsc Allworth - Birmingham Facility | Birmingham | AL | — | ◇ UNVERIFIED |
| PTPurcell Tire and Service Center | Anchorage | AK | — | ◇ UNVERIFIED |
| QHQuacker Houghton | Detroit | MI | — | ◇ UNVERIFIED |
| QCQuaker Chemical CORP | Middletown | OH | — | ◇ UNVERIFIED |
| QHQuaker Houghton Pa INC | Carrollton | GA | — | ◇ UNVERIFIED |
 Qualichem, INC. | Salem | VA | — | ◇ UNVERIFIED |
 Ques Industries INC | Cleveland | OH | — | ◇ UNVERIFIED |
| RSRefinery Specialties Hempstead Facility | Hempstead | TX | — | ◇ UNVERIFIED |
| RPRemet Pic INC | Utica | NY | — | ◇ UNVERIFIED |
| RCRevlis CORP | Akron | OH | — | ◇ UNVERIFIED |
| RCRevlis Corporation | Akron | OH | — | ◇ UNVERIFIED |
| RCRhein Chemie CORP | Chardon | OH | — | ◇ UNVERIFIED |
| RARichards Apex Inc/lube Mfg Plt | Philadelphia | PA | — | ◇ UNVERIFIED |
| RRilco | Rock Island | IL | — | ◇ UNVERIFIED |
| RIRock Island Lubricants Company | Moline | IL | — | ◇ UNVERIFIED |
| RIRock Island Lubricants CORP INC | Rock Island | IL | — | ◇ UNVERIFIED |
| RVRock Valley Oil & Chemical CO | Rockford | IL | — | ◇ UNVERIFIED |
| RWRollie Williams Paint Spot INC | Elkhart | IN | — | ◇ UNVERIFIED |
| RSRossborough Supply Src Div | Cleveland | OH | — | ◇ UNVERIFIED |
| SCSafety-kleen CORP INC - Davenport Facility | Davenport | IA | — | ◇ UNVERIFIED |
| SSSafety-kleen Systems | Cranston | RI | — | ◇ UNVERIFIED |
| SSSafety-kleen Systems -510301 | Minneapolis | MN | — | ◇ UNVERIFIED |
| SKSafety Kleen Systems INC | Des Moines | IA | — | ◇ UNVERIFIED |
| SSSafety-kleen Systems INC | Dolton | IL | — | ◇ UNVERIFIED |
| SSSafety-kleen Systems INC Buffalo Oil Recovery Facility | Buffalo | NY | — | ◇ UNVERIFIED |
| SSSafety-kleen Systems, INC. - Dolomite, Al Service Center | Dolomite | AL | — | ◇ UNVERIFIED |
| SSSafety-kleen Systems INC - Linden | Linden | NJ | — | ◇ UNVERIFIED |
| SCSelect Chemistry-tyler | Tyler | TX | — | ◇ UNVERIFIED |
| STShamrock Technologies INC | Newark | NJ | — | ◇ UNVERIFIED |
| SCShell Chemical LP - Martinez Catayst Plant | Martinez | CA | — | ◇ UNVERIFIED |
| SLShell Lubricant | Galena Park | TX | — | ◇ UNVERIFIED |
| SLShell Lubricants Fowlerville | Fowlerville | MI | — | ◇ UNVERIFIED |
| SRShell River Rouge Lubricants Plant | River Rouge | MI | — | ◇ UNVERIFIED |
| SPShreveport Plant | Shreveport | LA | — | ◇ UNVERIFIED |
| SCShrieve Chemical Services | Marlin | TX | — | ◇ UNVERIFIED |
| SESiemens Energy & Automation Incorporated | Roebuck | SC | — | ◇ UNVERIFIED |
| SOSigma-genosys of Texas | The Woodlands | TX | — | ◇ UNVERIFIED |
| SCSika CORP | Aurora | IL | — | ◇ UNVERIFIED |
| SCSmark CO | South Gate | CA | — | ◇ UNVERIFIED |
| SSSolid Start INC | Lakeland | FL | — | ◇ UNVERIFIED |
| SISolutia INC Krummrich Il (part) | Sauget | IL | — | ◇ UNVERIFIED |
| SUSolvay USA Midland | Midland | TX | — | ◇ UNVERIFIED |
 South Coast Terminals Strang Road Facility | La Porte | TX | — | ◇ UNVERIFIED |
| SLSouthwin LTD Nevada | Sparks | NV | — | ◇ UNVERIFIED |
| SLSpecchem, LLC | Kansas City | KS | — | ◇ UNVERIFIED |
| SCSternocandlelamp CO LLC | Memphis | TN | — | ◇ UNVERIFIED |
| SPStp Products Manufacturing CO | Painesville | OH | — | ◇ UNVERIFIED |
| SPStp Products Manufacturing Company | Vandalia | OH | — | ◇ UNVERIFIED |
| SCStruktol CO. of America | Villa Rica | GA | — | ◇ UNVERIFIED |
| SWSuez Wts USA INC | Addison | IL | — | ◇ UNVERIFIED |
| SWSuez Wts USA INC Beaumont - Plant | Beaumont | TX | — | ◇ UNVERIFIED |
| SLSummit Lubricants | Batavia | NY | — | ◇ UNVERIFIED |
| SRSynergy Recycling, LLC | Saint Marys | GA | — | ◇ UNVERIFIED |
| SCSyntech Cedar Port | Baytown | TX | — | ◇ UNVERIFIED |
| TCTaylor Chemical, INC. | Taylor | PA | — | ◇ UNVERIFIED |
| TOTeam Oil Tools | Tulsa | OK | — | ◇ UNVERIFIED |
| TITechnic INC | Cranston | RI | — | ◇ UNVERIFIED |
| TRTexas Refinery CORP. | Mansfield | TX | — | ◇ UNVERIFIED |
| TBTexpar Bainbridge Terminal | Bainbridge | GA | — | ◇ UNVERIFIED |
| TBThe Blaster Chemical Companies | Valley View | OH | — | ◇ UNVERIFIED |
| TLThermaldyne LLC - Port Allen Facility | Port Allen | LA | — | ◇ UNVERIFIED |
| TVThe Valvoline Company | Rochester | PA | — | ◇ UNVERIFIED |
| TVThe Valvoline Company | College Park | GA | — | ◇ UNVERIFIED |
| TThunderline-z | Hampstead | NH | — | ◇ UNVERIFIED |
| TSTimpie Salt Processing Plant | Grantsville | UT | — | ◇ UNVERIFIED |
| TMTroy Manufacturing INC | Burton | OH | — | ◇ UNVERIFIED |
| UPUltra Pure Solutions INC | Castroville | CA | — | ◇ UNVERIFIED |
| UIUnited Industries Dba Chemsico | Saint Louis | MO | — | ◇ UNVERIFIED |
| USUnivar Solutions Powder Facility | Waxahachie | TX | — | ◇ UNVERIFIED |
| USUnivar Solutions Ssc Facility | Waxahachie | TX | — | ◇ UNVERIFIED |
| USUnivar Solutions Usa, LLC. Fka Dpc Enterprises, LP | Chattanooga | TN | — | ◇ UNVERIFIED |
| ULUniversal Lubricants-wichita, Ks | Wichita | KS | — | ◇ UNVERIFIED |
| UAUS Army Pine Bluff Arsenal | Pine Bluff | AR | — | ◇ UNVERIFIED |
