| BCBasf CORP Colton | Colton | — | ◇ UNVERIFIED |
| BHBeauty & Health International INC | Garden Grove | — | ◇ UNVERIFIED |
| BCBeckman Coulter INC. | Fullerton | — | ◇ UNVERIFIED |
| BABeneficial Ag Services | Ontario | — | ◇ UNVERIFIED |
| BLBiocell Laboratories | Compton | — | ◇ UNVERIFIED |
| BLBiological Life INC | Simi Valley | — | ◇ UNVERIFIED |
| BPBiomarin Pharmaceutical INC | Novato | — | ◇ UNVERIFIED |
| BIBioneer INC | Alameda | — | ◇ UNVERIFIED |
| BIBiosite INC | San Diego | — | ◇ UNVERIFIED |
| BMBlackhawk Manufacturing, INC. | Rialto | — | ◇ UNVERIFIED |
| BHBnsf Hobart Ramp | Los Angeles | — | ◇ UNVERIFIED |
| BLBoron Lng Plant | Boron | — | ◇ UNVERIFIED |
| BBBridgestone Bandag LLC Long Beach Plant | Long Beach | — | ◇ UNVERIFIED |
| BGBritz-simplot Grower Solutions, Five Points | Five Points | — | ◇ UNVERIFIED |
| BIBrizon INC | Escondido | — | ◇ UNVERIFIED |
| BBBrown & Bryant | Arvin | — | ◇ UNVERIFIED |
| CNC3 Nano INC | Hayward | — | ◇ UNVERIFIED |
| CICalarco INC | Corcoran | — | ◇ UNVERIFIED |
 Calgon Carbon Corporation | Blue Lake | — | ◇ UNVERIFIED |
| CPCalpine Pittsburg, LLC | Pittsburg | — | ◇ UNVERIFIED |
| CPCal-western Paints INC | Santa Fe Springs | — | ◇ UNVERIFIED |
| CLCalzyme Labs, INC | San Luis Obispo | — | ◇ UNVERIFIED |
| CHCaptek Holdings INC | Vista | — | ◇ UNVERIFIED |
| CICardinal Industrial Finishes 3 | City of Industry | — | ◇ UNVERIFIED |
| CTCarlsbad Technology INC | Carlsbad | — | ◇ UNVERIFIED |
| CICatalina Industries INC | N Hollywood | — | ◇ UNVERIFIED |
| CBCatalytica Bay View, INC. | East Palo Alto | — | ◇ UNVERIFIED |
| CMCelltech Manufacturing Ca, INC. | Santa Ana | — | ◇ UNVERIFIED |
| CACemex Admix Usa, LLC | Victorville | — | ◇ UNVERIFIED |
| CICeradyne INC | Costa Mesa | — | ◇ UNVERIFIED |
| CCChampion Chemical CO | Whittier | — | ◇ UNVERIFIED |
| CAChemical and Pigment | Pittsburg | — | ◇ UNVERIFIED |
| CCChemline Ca INC | Compton | — | ◇ UNVERIFIED |
| COChemstation of Los Angeles | Riverside | — | ◇ UNVERIFIED |
| CPChromalloy Pacific Gas Turbine Center | San Diego | — | ◇ UNVERIFIED |
| COCity of Santa Monica Water Treatment Plant | Los Angeles | — | ◇ UNVERIFIED |
| CFCompound Focus INC Dba Biofocus Dp1 | South San Francisco | — | ◇ UNVERIFIED |
| CSConcise Separations | San Jose | — | ◇ UNVERIFIED |
| CCConcrete Chemicals | San Carlos | — | ◇ UNVERIFIED |
| CSContainer Storage | Richmond | — | ◇ UNVERIFIED |
| CCContract Coatings | Stockton | — | ◇ UNVERIFIED |
| CCCook Composites & Polymers CO. | Oxnard | — | ◇ UNVERIFIED |
| CICoral Industries INC | Santa Fe Springs | — | ◇ UNVERIFIED |
| CMCorsair Marine INC | Chula Vista | — | ◇ UNVERIFIED |
| CGCosmetic Group USA INC | Sun Valley | — | ◇ UNVERIFIED |
| CICosmetic Industries INC | Fontana | — | ◇ UNVERIFIED |
| CPCosmic Plastics INC | Valencia | — | ◇ UNVERIFIED |
| CCCosway CO | Gardena | — | ◇ UNVERIFIED |
| CCCosway Company INC | Long Beach | — | ◇ UNVERIFIED |
| CCCriterion Catalysts & Technologies LP | Azusa | — | ◇ UNVERIFIED |
