| PPPacific Plating | Sun Valley | — | ◐ LIKELY ACTIVE |
| QLQuallion LLC Mann Biomedical Park Building 61 | Santa Clarita | — | ◐ LIKELY ACTIVE |
| SPSamson Pharmaceuticals INC | Commerce | — | ◐ LIKELY ACTIVE |
| TDThe Dow Chemical Company C/o Weber Logistics | Santa Fe Springs | — | ◐ LIKELY ACTIVE |
| TCTranschem Coatngs | Los Angeles | — | ◐ LIKELY ACTIVE |
| WFWhitaker-bermite Facility - Formerly | Santa Clarita | — | ◐ LIKELY ACTIVE |
| 3D3m Drug Delivery Systems | Northridge | — | ◇ UNVERIFIED |
| ACAcrylatex Coatings and Recycling INC | Azusa | — | ◇ UNVERIFIED |
 Advanced Packaging & Products | Gardena | — | ◇ UNVERIFIED |
| APAir Products Polymers LP | Rowland Heights | — | ◇ UNVERIFIED |
| APAir Products West Coast Hydrogen LLC - Torrance | Torrance | — | ◇ UNVERIFIED |
| ATAll Tex Ink | La Mirada | — | ◇ UNVERIFIED |
| APAmerican Polystyrene CORP | Torrance | — | ◇ UNVERIFIED |
| APAmeritone Paint CO | Rancho Dominguez | — | ◇ UNVERIFIED |
| AFArmstrong Flooring INC | South Gate | — | ◇ UNVERIFIED |
| AArnco | South Gate | — | ◇ UNVERIFIED |
| BPBaker Petrolite CORP | Santa Fe Springs | — | ◇ UNVERIFIED |
| BLBiocell Laboratories | Compton | — | ◇ UNVERIFIED |
| BHBnsf Hobart Ramp | Los Angeles | — | ◇ UNVERIFIED |
| BBBridgestone Bandag LLC Long Beach Plant | Long Beach | — | ◇ UNVERIFIED |
| CPCal-western Paints INC | Santa Fe Springs | — | ◇ UNVERIFIED |
| CICardinal Industrial Finishes 3 | City of Industry | — | ◇ UNVERIFIED |
| CICatalina Industries INC | N Hollywood | — | ◇ UNVERIFIED |
| CCChampion Chemical CO | Whittier | — | ◇ UNVERIFIED |
| CCChemline Ca INC | Compton | — | ◇ UNVERIFIED |
| COCity of Santa Monica Water Treatment Plant | Los Angeles | — | ◇ UNVERIFIED |
| CICoral Industries INC | Santa Fe Springs | — | ◇ UNVERIFIED |
| CGCosmetic Group USA INC | Sun Valley | — | ◇ UNVERIFIED |
| CPCosmic Plastics INC | Valencia | — | ◇ UNVERIFIED |
| CCCosway CO | Gardena | — | ◇ UNVERIFIED |
| CCCosway Company INC | Long Beach | — | ◇ UNVERIFIED |
| CCCriterion Catalysts & Technologies LP | Azusa | — | ◇ UNVERIFIED |
 Dayton Superior Specialty Chem Ical CORP Edoco | Long Beach | — | ◇ UNVERIFIED |
| DIDexol Ind INC | Torrance | — | ◇ UNVERIFIED |
| DCDiversey CORP. | Santa Fe Springs | — | ◇ UNVERIFIED |
 Dunn-edwards CORP | Vernon | — | ◇ UNVERIFIED |
| EIE I Dupont De Nemours - Pomona Plant | Pomona | — | ◇ UNVERIFIED |
| ECEmerson & Cuming INC | Gardena | — | ◇ UNVERIFIED |
| ECEngineered Coating Technology INC | Vernon | — | ◇ UNVERIFIED |
| EPEngineered Polymer Solutions INC D/b/a Valspar Coatings | Montebello | — | ◇ UNVERIFIED |
| ERExpanded Rubber & Plastics CORP | Gardena | — | ◇ UNVERIFIED |
| FAFilo America | Commerce | — | ◇ UNVERIFIED |
| FCFiltrol Corporation | Los Angeles | — | ◇ UNVERIFIED |
| FLFine Line Paint CORP | Santa Fe Springs | — | ◇ UNVERIFIED |
| FGFlint Group North America CORP | La Puente | — | ◇ UNVERIFIED |
| GCGabels Cosmetics | Los Angeles | — | ◇ UNVERIFIED |
| GAGcp Applied Technologies INC | Los Angeles | — | ◇ UNVERIFIED |
| GSGilead Sciences INC | San Dimas | — | ◇ UNVERIFIED |
| GSGilead Sciences, INC. | San Dimas | — | ◇ UNVERIFIED |
| GLGordon Laboratories INC | Carson | — | ◇ UNVERIFIED |
