| OCObsidian Chemical Solutions LLC | Midland | TX | — | ◇ UNVERIFIED |
| OIOemeta INC. | Salt Lake City | UT | — | ◇ UNVERIFIED |
| OSOilfield Solutions Midland | Midland | TX | — | ◇ UNVERIFIED |
| O3Olein 3 Green Valley Industrial Park | Yabucoa | PR | — | ◇ UNVERIFIED |
| OFOligo Factory INC | Holliston | MA | — | ◇ UNVERIFIED |
| OCOlin CORP - Moundsville Plant | Moundsville | WV | — | ◇ UNVERIFIED |
| OROlin Rd Crude Butadiene Ms Mc 43 44 | Beaumont | TX | — | ◇ UNVERIFIED |
| OCOliver Chemical CO INC | Cincinnati | OH | — | ◇ UNVERIFIED |
| OCOlympic Chemical CORP | Tacoma | WA | — | ◇ UNVERIFIED |
| OTOmaha Transloading Corporation | Omaha | NE | — | ◇ UNVERIFIED |
| OEOmg Electronic Chemicals | South Plainfield | NJ | — | ◇ UNVERIFIED |
| OBOmni Bioenergy LLC | Granite City | IL | — | ◇ UNVERIFIED |
| OIOmni Industrial Solutions, INC | Longview | TX | — | ◇ UNVERIFIED |
| OSOmnova Solutions INC. | Akron | OH | — | ◇ UNVERIFIED |
| OSOmnova Solutions INC. - Calhoun Latex Plant | Calhoun | GA | — | ◇ UNVERIFIED |
| OSOmya Specialty Materials | Long Beach | CA | — | ◇ UNVERIFIED |
| ONOndeo Nalco CO | Ellwood City | PA | — | ◇ UNVERIFIED |
| OUOne Up Mfg 3 | Gardena | CA | — | ◇ UNVERIFIED |
| OOnscent/norwood | Norwood | NJ | — | ◇ UNVERIFIED |
| OBOpen Book Extracts | Roxboro | NC | — | ◇ UNVERIFIED |
| ODOpen Door Packaging | Chino | CA | — | ◇ UNVERIFIED |
| OMOrasis Medical | Laguna Hills | CA | — | ◇ UNVERIFIED |
| OBOregon Basin - Polyacrylamide Plant | Park | WY | — | ◇ UNVERIFIED |
 Organic Dyes and Pigments | Providence | RI | — | ◇ UNVERIFIED |
| OGOrica Ground Support | Grand Junction | CO | — | ◇ UNVERIFIED |
| OBOriginal Balboa Caregivers INC | Chatsworth | CA | — | ◇ UNVERIFIED |
| OSOrion Safety Products | Peru | IN | — | ◇ UNVERIFIED |
| OBOsprey Biotechnics | Sarasota | FL | — | ◇ UNVERIFIED |
| OAOxbow Activated Carbon LLC | Emlenton | PA | — | ◇ UNVERIFIED |
| OIOxford Immunotec USA Marlborough | Marlborough | MA | — | ◇ UNVERIFIED |
| OVOxy Vinyls LP - Deer Park Vcm Facility | Deer Park | TX | — | ◇ UNVERIFIED |
| PSP2 Sciences INC. | Naugatuck | CT | — | ◇ UNVERIFIED |
| PPPacheco Plaza Cleaners | Novato | CA | — | ◇ UNVERIFIED |
| PBPacific Biodiesel INC | Kahului | HI | — | ◇ UNVERIFIED |
| PDPacific Diazo Prods INC Fontana | Fontana | CA | — | ◇ UNVERIFIED |
| PHPacific Hydrotech Corporation | Mission Viejo | CA | — | ◇ UNVERIFIED |
 Pacific Industrial Development Corporation | Spartanburg | SC | — | ◇ UNVERIFIED |
| PTPAK Technologies Holding Company Inc. | Milwaukee | WI | — | ◇ UNVERIFIED |
| PIPanaceanano INC | Pasadena | CA | — | ◇ UNVERIFIED |
| PMPandora Methanol LLC | Nederland | TX | — | ◇ UNVERIFIED |
| PSPan-glo St Louis-trenton Avenue | Saint Louis | MO | — | ◇ UNVERIFIED |
| PPParallel Products of Florida, INC. | Bartow | FL | — | ◇ UNVERIFIED |
| PMPark Metallurgical CORP | Detroit | MI | — | ◇ UNVERIFIED |
| PCParts Cleaning Technologies LLC | Indianapolis | IN | — | ◇ UNVERIFIED |
| PRParviz Rahimian and Shohreh Rashti, Trustees of THE RAHIMIAN FAMILY TRUST, dated | City of Santa Clarita (area of Valencia) | CA | — | ◇ UNVERIFIED |
| PPPasadena Plant | Pasadena | TX | — | ◇ UNVERIFIED |
| PAPatriot Allied Solutions LLC | Hagerman | ID | — | ◇ UNVERIFIED |
| PBPatterson Brother's Lighting INC | Lakeside | CA | — | ◇ UNVERIFIED |
| PUPat Uchida Property | Kelso | WA | — | ◇ UNVERIFIED |
| PGPci Group | Fort Mill | SC | — | ◇ UNVERIFIED |
| PEPe Ell Hulk Hauling | Aberdeen | WA | — | ◇ UNVERIFIED |
| PTPellucere Technologies | Springdale | AR | — | ◇ UNVERIFIED |
| PTPellucere Technologies INC | Corvallis | OR | — | ◇ UNVERIFIED |
| PCPemco Corporation | Baltimore | MD | — | ◇ UNVERIFIED |
| PIPencco, INC. | Bardwell | TX | — | ◇ UNVERIFIED |
| PCPenray Cos INC | Wheeling | IL | — | ◇ UNVERIFIED |
| PRPeople's Refinery-hero Oak LLC | Santa Ana | CA | — | ◇ UNVERIFIED |
| PPerimeter | Santa Maria | CA | — | ◇ UNVERIFIED |
| PSPerimeter Solutions LP | Lancaster | CA | — | ◇ UNVERIFIED |
| PSPerimeter Solutions LP | Atwater | CA | — | ◇ UNVERIFIED |
| PSPerimeter Solutions - Mountain Home Seat Base | Mountain Home | ID | — | ◇ UNVERIFIED |
| POPerma-fix of South Georgia | Valdosta | GA | — | ◇ UNVERIFIED |
| PSPerrigo Sales CORP | Omaha | NE | — | ◇ UNVERIFIED |
| PCPetes Coolant Recycling | Orlando | FL | — | ◇ UNVERIFIED |
| PPPetoleum Product Supply, LLC | Guaynabo | PR | — | ◇ UNVERIFIED |
| PCPetra Chemical CO | Dallas | TX | — | ◇ UNVERIFIED |
| PRPetrochemical Refining | Freeport | TX | — | ◇ UNVERIFIED |
| PCPetro-con Chemical CO | Bronx | NY | — | ◇ UNVERIFIED |
| PCPetrolite Corporation | Bakersfield | CA | — | ◇ UNVERIFIED |
| PBPflaumer Brothers | Ewing | NJ | — | ◇ UNVERIFIED |
| PIPfp Industries LLC | Evanston | WY | — | ◇ UNVERIFIED |
| PIPha Industries | Orange | MA | — | ◇ UNVERIFIED |
| PIPharmasyn INC | Libertyville | IL | — | ◇ UNVERIFIED |
| POPharmscript of Texas North | Tyler | TX | — | ◇ UNVERIFIED |
| PAPhoenix Alloy Solutions, LLC | Riverside | CA | — | ◇ UNVERIFIED |
| PBPhoenix Bio Industries LLC | Goshen | CA | — | ◇ UNVERIFIED |
| PPPhoenix Products CO | Terryville | CT | — | ◇ UNVERIFIED |
| PSPhoenix Solutions, LLC | Morgantown | WV | — | ◇ UNVERIFIED |
| PTPhotoprotective Technologies | San Antonio | TX | — | ◇ UNVERIFIED |
| PTPicnic Time Family of Brands INC | Moorpark | CA | — | ◇ UNVERIFIED |
| PWPierce White | Dyersburg | TN | — | ◇ UNVERIFIED |
| PIPilgrim International, INC. | Middlebury | IN | — | ◇ UNVERIFIED |
| PIPiling, INC. | Freeport | TX | — | ◇ UNVERIFIED |
| PHPioneer Hi-bred International | Hayward | CA | — | ◇ UNVERIFIED |
| PIPka INC Prokrete Ind | Denver | CO | — | ◇ UNVERIFIED |
| PNPlant Nutrient Operations, LLC | Montgomery | AL | — | ◇ UNVERIFIED |
| PBPlasmine Bay Minette | Bay Minette | AL | — | ◇ UNVERIFIED |
| PPlaze | Dalton | GA | — | ◇ UNVERIFIED |
| PGPlaze Georgia (apollo Technologies, Inc) | Smyrna | GA | — | ◇ UNVERIFIED |
| PIPlaze INC | Saint Louis | MO | — | ◇ UNVERIFIED |
| PAPlz Aeroscience | Dalton | GA | — | ◇ UNVERIFIED |
| PIPolarome International | Newark | NJ | — | ◇ UNVERIFIED |
| PPolimeros | Longview | TX | — | ◇ UNVERIFIED |
| PCPolo Cleaners 2 | Middletown | RI | — | ◇ UNVERIFIED |
 Polycarbon Industries INC | Ayer | MA | — | ◇ UNVERIFIED |
| PIPolychemie INC | Pittsburg | CA | — | ◇ UNVERIFIED |
| PIPolychemie INC | Dolton | IL | — | ◇ UNVERIFIED |
| PIPolychemie INC | Longview | WA | — | ◇ UNVERIFIED |
| PIPolychemie INC | Pearlington | MS | — | ◇ UNVERIFIED |
| PSPolychem Services Inc., LLC | Chicago Heights | IL | — | ◇ UNVERIFIED |
