| P6Phillips 66 Bayway Refinery | Linden | NJ | 500+ | ● ACTIVE |
| P6Phillips 66 - Billings Refinery | Billings | MT | 100–499 | ● ACTIVE |
| P6Phillips 66 Refinery | Ferndale | WA | 100–499 | ● ACTIVE |
Placid Refining Company LLC | Port Allen | LA | 100–499 | ● ACTIVE |
| POPmc Organometallix INC | Carrollton | KY | 100–499 | ● ACTIVE |
| PBPoet Bioprocessing Hudson Co2 Plant Addition | Hudson | SD | 20–99 | ● ACTIVE |
| PBPoet Biorefining - Alexandria | Alexandria | IN | 20–99 | ● ACTIVE |
| PRPoet Research Center | Scotland | SD | 20–99 | ● ACTIVE |
| PRPremcor Refining Group INC - Lima Refinery | Lima | OH | 500+ | ● ACTIVE |
| RRRed River Energy LLC | Rosholt | SD | 20–99 | ● ACTIVE |
Reg Geismar, LLC | Geismar | LA | 100–499 | ● ACTIVE |
| RARohm and Haas Chemicals Bayport | La Porte | TX | 100–499 | ● ACTIVE |
| SCSasol Chemicals - Greens Bayou Plant | Houston | TX | 20–99 | ● ACTIVE |
| SCSasol Chemicals (usa) LLC - Lake Charles Chemical Complex | Westlake | LA | 500+ | ● ACTIVE |
| SESilver Eagle Refining, INC. | Evanston | WY | 20–99 | ● ACTIVE |
| SRSuperior Refinery CO. | Superior | WI | 100–499 | ● ACTIVE |
| SJSymrise Jacksonville Facility | Jacksonville | FL | 100–499 | ● ACTIVE |
| SUSynthomer USA LLC | Roebuck | SC | 20–99 | ● ACTIVE |
| TCThe Chemours Company Fc, Llc, Belle | Belle | WV | 100–499 | ● ACTIVE |
| TLThe Lubrizol CORP - Deer Park Plant | Deer Park | TX | 500+ | ● ACTIVE |
| TLThe Lubrizol Corporation, Bayport Plant | Pasadena | TX | 100–499 | ● ACTIVE |
| TRToledo Refining Company LLC | Oregon | OH | 100–499 | ● ACTIVE |
| TPTotalenergies Petrochemicals & Refining INC - Port Arthur Refinery | Port Arthur | TX | 500+ | ● ACTIVE |
| UCUmicore Catalyst USA | Pasadena | TX | 20–99 | ● ACTIVE |
| VCValero Corpus Christi Refineries - West Plant | Corpus Christi | TX | 100–499 | ● ACTIVE |
| VRValero Refining Company - Ca | Benicia | CA | 100–499 | ● ACTIVE |
| VWValero Wilmington Refinery | Wilmington | CA | 100–499 | ● ACTIVE |
| VRVertex Refining Alabama LLC | Saraland | AL | 100–499 | ● ACTIVE |
| WCWestlake Chemicals & Vinyls LLC | Westlake | LA | 20–99 | ● ACTIVE |
| WVWestlake Vinyls INC | Calvert City | KY | 100–499 | ● ACTIVE |
Aerojet Rocketdyne of De, INC | Canoga Park | CA | — | ● ACTIVE |
Chemisphere Corporation | Saint Louis | MO | — | ● ACTIVE |
| CPChevron Products CO. | El Segundo | CA | 500+ | ● ACTIVE |
| CRContinental Refining Company LLC | Somerset | KY | 1–19 | ● ACTIVE |
Cornerstone Chemical Company, LLC | Waggaman | LA | — | ● ACTIVE |
| GRGoodway Refining, LLC | Atmore | AL | 1–19 | ● ACTIVE |
| HJHep Javelina, LLC | Corpus Christi | TX | 20–99 | ● ACTIVE |
International Chemical Company | Philadelphia | PA | — | ● ACTIVE |
| OROhio Refining Company LLC | Oregon | OH | 500+ | ● ACTIVE |
Oil Re-refining Company INC. | Portland | OR | — | ● ACTIVE |
| PRPaulsboro Refining Company LLC | Paulsboro | NJ | 100–499 | ● ACTIVE |
| PRPhibro Rcb LLC | Natchez | MS | 20–99 | ● ACTIVE |
| PCPulcra Chemicals LLC | Rock Hill | SC | 20–99 | ● ACTIVE |
| RERedfield Energy, LLC | Redfield | SD | 20–99 | ● ACTIVE |
| TFThermo Fisher Scientific | Eugene | OR | 100–499 | ● ACTIVE |
Third Coast Packaging, INC. | Pearland | TX | 100–499 | ● ACTIVE |
Adept Link Incorporated | Hillsborough | NJ | — | ● ACTIVE |
Aeromotive Research and Defense Group, INC. | Rockford | IL | — | ● ACTIVE |
Amalgamated Incorporated | Fort Wayne | IN | — | ● ACTIVE |
Amfuels Intl, INC. | Los Angeles | CA | — | ● ACTIVE |