| OCOlson Companies, INC. | West Fork | AR | — | ◇ UNVERIFIED |
| OEOmega Extruding CORP of Ca | Compton | CA | — | ◇ UNVERIFIED |
| OSOmni Southeastern Chem | Sumter | SC | — | ◇ UNVERIFIED |
| O7Ontario 76 | Ontario | CA | — | ◇ UNVERIFIED |
| OMOrasis Medical | Laguna Hills | CA | — | ◇ UNVERIFIED |
| OBOregon Basin - Polyacrylamide Plant (merit Energy Company) | Cody | WY | — | ◇ UNVERIFIED |
| OSOrenco Systems | Roseburg | OR | — | ◇ UNVERIFIED |
| OEO'Tech East, LLC | Auburn | MA | — | ◇ UNVERIFIED |
| OIOxford Immunotec USA Marlborough | Marlborough | MA | — | ◇ UNVERIFIED |
| OIOxford Inustries of Connecticut, INC. | New Britain | CT | — | ◇ UNVERIFIED |
| OOOxy Occidental Petroleum Corporation | Denver | CO | — | ◇ UNVERIFIED |
| OVOxy Vinyls Deer Park Vcm Plant | Deer Park | TX | — | ◇ UNVERIFIED |
| OVOxy Vinyls LP - Deer Park Vcm Facility | Deer Park | TX | — | ◇ UNVERIFIED |
| OCOyster Creek | Freeport | TX | — | ◇ UNVERIFIED |
| PSP2 Sciences INC. | Naugatuck | CT | — | ◇ UNVERIFIED |
| PPPacheco Plaza Cleaners | Novato | CA | — | ◇ UNVERIFIED |
| PHPacific Hydrotech Corporation | Mission Viejo | CA | — | ◇ UNVERIFIED |
| PPPacific Polymers | Galt | CA | — | ◇ UNVERIFIED |
| PSPacific Surf Glass | San Diego | CA | — | ◇ UNVERIFIED |
| PLPactiv LLC | Santa Fe Springs | CA | — | ◇ UNVERIFIED |
| PTPAK Technologies Holding Company Inc. | Milwaukee | WI | — | ◇ UNVERIFIED |
| PMPalacios Marine and Industrial | Point Comfort | TX | — | ◇ UNVERIFIED |
| PAPan American Plastics INC | Commerce | CA | — | ◇ UNVERIFIED |
| PMPandora Methanol LLC | Nederland | TX | — | ◇ UNVERIFIED |
| PPParallel Products of Florida, INC. | Bartow | FL | — | ◇ UNVERIFIED |
| PGParamount Global, INC. | Jurupa Valley | CA | — | ◇ UNVERIFIED |
| PPParamount Petr CORP | Long Beach | CA | — | ◇ UNVERIFIED |
| PIParsan, INC. Dba Roscoe Fuel Station | Van Nuys | CA | — | ◇ UNVERIFIED |
| PMParvus Microstructures | Edina | MN | — | ◇ UNVERIFIED |
| PBPasadena Bio Collaborative Incubator | Pasadena | CA | — | ◇ UNVERIFIED |
| PPPasadena Plant | Pasadena | TX | — | ◇ UNVERIFIED |
| PPPasadena Plastics Complex | Pasadena | TX | — | ◇ UNVERIFIED |
| PAPatriot Allied Solutions LLC | Hagerman | ID | — | ◇ UNVERIFIED |
| PBPatterson Brother's Lighting INC | Lakeside | CA | — | ◇ UNVERIFIED |
| PTPaulsboro Technical Center | Paulsboro | NJ | — | ◇ UNVERIFIED |
| PGPd Glycol Plant | Beaumont | TX | — | ◇ UNVERIFIED |
| PPPeak Performance Compounding LLC | Leominster | MA | — | ◇ UNVERIFIED |
| PIP&e INC | Altamonte Springs | FL | — | ◇ UNVERIFIED |
| PCPemco Corporation | Baltimore | MD | — | ◇ UNVERIFIED |
| PTPenske Truck Leasing CO LP | New Castle | DE | — | ◇ UNVERIFIED |
| PSPersonnel Services | Brenham | TX | — | ◇ UNVERIFIED |
| PCPeterson Chemical Technology, LLC | Fort Smith | AR | — | ◇ UNVERIFIED |
| PPPetoleum Product Supply, LLC | Guaynabo | PR | — | ◇ UNVERIFIED |
| PSPetrochemical Services, INC | Richmond | CA | — | ◇ UNVERIFIED |
| PRPetroleum Refinery | Kirtland | NM | — | ◇ UNVERIFIED |
| PSPetro Star INC North Pole Refinery | North Pole | AK | — | ◇ UNVERIFIED |
| PIPfp Industries LLC | Evanston | WY | — | ◇ UNVERIFIED |
| POPharmscript of Texas North | Tyler | TX | — | ◇ UNVERIFIED |
| PEPhiladelphia Energy Solutions | Philadelphia | PA | — | ◇ UNVERIFIED |
| P6Philips 66 Gulf Coast Properties LLC | Nederland | TX | — | ◇ UNVERIFIED |
| P6Phillips 66 | Wilmington | CA | — | ◇ UNVERIFIED |
| P6Phillips 66 Alliance Refinery | Belle Chasse | LA | — | ◇ UNVERIFIED |
| P6Phillips 66 CO - Lake Charles Refinery | Westlake | LA | — | ◇ UNVERIFIED |
| P6Phillips 66 CO Lar - Trapac Line Inspections | Wilmington | CA | — | ◇ UNVERIFIED |
| P6Phillips 66 - Former Oriental Refinery | Alamosa Area | CO | — | ◇ UNVERIFIED |
| P6Phillips 66 Pipeline LLC | Linden | NJ | — | ◇ UNVERIFIED |
| PBPhoenix Bio Industries LLC | Goshen | CA | — | ◇ UNVERIFIED |
| PTPhotoprotective Technologies | San Antonio | TX | — | ◇ UNVERIFIED |
| PSPierce & Stevens CORP | Seabrook | NH | — | ◇ UNVERIFIED |
| PWPierce White | Dyersburg | TN | — | ◇ UNVERIFIED |
 Pierson Industries, INC. | Rockaway | NJ | — | ◇ UNVERIFIED |
| PIPilgrim Innovative Plastics LLC | Plymouth | MA | — | ◇ UNVERIFIED |
| PIPiling, INC. | Freeport | TX | — | ◇ UNVERIFIED |
| PSPineview Station | Coalville | UT | — | ◇ UNVERIFIED |
| PHPioneer Hi-bred International | Hayward | CA | — | ◇ UNVERIFIED |
| PIPiper Industries INC Wire Products Div | Memphis | TN | — | ◇ UNVERIFIED |
| PCP&K Custom Acrylics, Inc. | Malden | MA | — | ◇ UNVERIFIED |
| PTPlanter Technology INC | Hayward | CA | — | ◇ UNVERIFIED |
| PCPlastic Compounders, INC. | Cambridge | OH | — | ◇ UNVERIFIED |
| PDPlastic Design, INC. | N Chelmsford | MA | — | ◇ UNVERIFIED |
| PIPlastic Industries, INC. | Preston | ID | — | ◇ UNVERIFIED |
| PIPlastic Innovations, LLC | Jurupa Valley | CA | — | ◇ UNVERIFIED |
| PMPlastic Materials, INC | Macedonia | OH | — | ◇ UNVERIFIED |
| PMPlastic Molded Components | Cypress | CA | — | ◇ UNVERIFIED |
| PRPlastic Recycling INC | Indianapolis | IN | — | ◇ UNVERIFIED |
| PRPlastic Resources, Inc. | Cartersville | GA | — | ◇ UNVERIFIED |
| PRPlastic Restoration | Saint Elmo | IL | — | ◇ UNVERIFIED |
| PFPlastics Forming Enterprises | Merrimack | NH | — | ◇ UNVERIFIED |
| PSPlastic Solutions INC. | Bayport | NY | — | ◇ UNVERIFIED |
| PRPlastics Research CORP | Santa Fe Springs | CA | — | ◇ UNVERIFIED |
 Plastic Technologies of Vermont, INC | Londonderry | NH | — | ◇ UNVERIFIED |
| PPolimeros | Longview | TX | — | ◇ UNVERIFIED |
| PIPolyair Inter Pack INC. | Atlanta | GA | — | ◇ UNVERIFIED |
| PLPolyCap LLC | Lebanon | VA | — | ◇ UNVERIFIED |
| PIPolycell Int'l CORP | Cerritos | CA | — | ◇ UNVERIFIED |
| PIPolydyne INC. | Elk Grove | CA | — | ◇ UNVERIFIED |
| PPPolyethylene Plant | Deer Park | TX | — | ◇ UNVERIFIED |
| PCPolyexe Corporation | Brentwood | NH | — | ◇ UNVERIFIED |
| PDPolyflex Division of Flex Technologies | Baltic | OH | — | ◇ UNVERIFIED |
| PIPolygard INC Acworth | Acworth | GA | — | ◇ UNVERIFIED |
| PMPoly Marketing & Associates INC | Houston | TX | — | ◇ UNVERIFIED |
| PIPolymera INC | Hebron | OH | — | ◇ UNVERIFIED |
| PIPolymeric Interconnect | Butte | MT | — | ◇ UNVERIFIED |
| PGPolymers Group Olybilt Lab | Houston | TX | — | ◇ UNVERIFIED |
| PTPolymer Technologies | Nashua | NH | — | ◇ UNVERIFIED |
| PTPolymer Technologies LLC | Mansfield | TX | — | ◇ UNVERIFIED |
| PPolynt | Forest Park | GA | — | ◇ UNVERIFIED |
| PCPolynt Composites USA INC | Chatham | VA | — | ◇ UNVERIFIED |
| PCPolynt Composites USA INC. | Pensacola | FL | — | ◇ UNVERIFIED |
| PCPolyone CORP | Macedonia | OH | — | ◇ UNVERIFIED |
