| Valero Refining Co-Cali Fornia Benicia Refinery | Benicia | 19.5k |
| Tesla Inc | Fremont | 13.2k |
| Martinez Refining Co Llc | Martinez | 10.0k |
| Fabri Cote | Los Angeles | 9.7k |
| Chevron Products Co Richmond Refinery | Richmond | 6.7k |
| Tesoro Refining & Marketing Co Llc | Martinez | 6.6k |
| Torrance Refining Co Llc | Torrance | 5.8k |
| Integrated Dna Technologies | San Diego | 4.8k |
| Johnson Laminating & Coating Inc. | Carson | 4.1k |
| Shell Chemical Lp - Martinez Catalyst Plant | Martinez | 3.6k |
| Chevron Products Co. Div Of Chevron Usa Inc. | El Segundo | 3.5k |
| Phillips 66 Los Angeles Refinery Wilmington Plant | Wilmington | 2.9k |
| Equilon Carson Terminal | Carson | 2.4k |
| Arlon Graphics Llc | Placentia | 2.2k |
| Ultramar Inc Wilmington Refinery | Wilmington | 1.9k |
| Phillips 66 Los Angeles Refinery Carson Plant | Carson | 1.8k |
| Phillips 66 Rodeo Renewable Energy Complex | Rodeo | 1.6k |
| Kern Energy | Bakersfield | 1.6k |
| Olympus Terminals Llc | Carson | 1.4k |
| Phillips 66 Richmond Terminal | Richmond | 1.2k |
| Arcadia Inc. | Vernon | 1.2k |
| Saint Gobain Solar Gard Llc | San Diego | 1.1k |
| Honeywell International Inc | Torrance | 1.1k |
| Nick Barbieri Trucking Llc | Santa Rosa | 1.0k |
| Agilent Technologies Inc | Folsom | 1.0k |
| Southern Counties Oil Co. Lp D.b.a. Sc Fuels | Oxnard | 895 |
| Tesoro - Vinvale Terminal | South Gate | 770 |
| Tesoro East Hynes Terminal | Long Beach | 680 |
| Chevron Huntington Beach Terminal | Huntington Beach | 673 |
| Certified Enameling Inc | Los Angeles | 520 |
| Tesoro - Colton Terminal | Bloomington | 510 |
| Tesoro Marine Terminal 2 | Long Beach | 491 |
| Tesoro - Stockton Terminal | Stockton | 460 |
| Baker Petrolite | Bakersfield | 453 |
| W. R. Grace | Hesperia | 428 |
| Designer Molecules Inc | San Diego | 400 |
| Lockheed Martin Aeronautics Co | Palmdale | 390 |
| Agilent Technologies Inc | Santa Clara | 378 |
| Tesoro Hathaway Terminal | Signal Hill | 370 |
| Sherwin-Williams Co | Victorville | 343 |
| 3m Co - Monrovia Tape | Monrovia | 303 |
| Phillips 66 Los Angeles Terminal | Los Angeles | 280 |
| Chevron Richmond Technology Center | Richmond | 272 |
| Tesoro - San Diego Terminal | San Diego | 260 |
| Stewart Filmscreen Corp | Torrance | 194 |
| Kawneer Co Inc | Visalia | 169 |
| Olympus Terminals Llc | Long Beach | 165 |
| Petrodiamond Terminal Co | Long Beach | 135 |
| Military Ocean Terminal Concord | Concord | 120 |
| Ampac Fine Chemicals Llc | Rancho Cordova | 115 |
| Equilon Mormon Island Terminal | Wilmington | 114 |
| Equilon San Jose Terminal | San Jose | 107 |
| Prc-Desoto International Inc. | Mojave | 98 |
| Valero Wilmington Asphalt Plant | Wilmington | 94 |
| Phillips 66 Los Angeles Refinery Marine Terminal | Wilmington | 82 |
| Dorf Ketal Energy Services Llc - Bakersfield Site | Bakersfield | 80 |
| Air Products Manufacturing Llc | Paramount | 64 |
| Dura Coat Products Inc (Axalta Coating Systems) | Riverside | 57 |
| Lunday-Thagard Co Dba World Oil Refining | South Gate | 53 |
| Bakersfield Renewable Fuels Llc - Areas 1 & 2 | Bakersfield | 46 |
| Univar Solutions Usa Inc. | Commerce | 41 |
| A.g. Layne Inc. | Los Angeles | 40 |
| Demennokerdoon Dba World Oil Recycling | Compton | 22 |
| Univar Solutions Usa | Fairfield | 21 |
| Phenomenex No 8 | Torrance | 20 |
| Univar Solutions Carson Ca | Carson | 16 |
| Veolia Es Technical Solutions L.l.c. | Azusa | 10 |
| Lgc Biosearch Technologies Inc | Petaluma | 10 |
| Laird Coatings Corp | Huntington Beach | 9 |
| Phenomenex Inc. | Torrance | 7 |
| Ionis Pharmaceuticals Inc. | Carlsbad | 1 |
| Championx-Bakersfield | Bakersfield | 0 |
| Foster Farms Collier Complex | Delhi | 0 |
| Southern Counties Oil Co. Lp D.b.a. Sc Fuels | Modesto | 0 |
| U.s Army Sierra Army Depot | Herlong | 0 |
| The Jankovich Co San Pedro Fixed Facility | San Pedro | 0 |
| Remo Inc | Valencia | 0 |
| The Jankovich Co Paramount Fixed Facility | Paramount | 0 |
| Norman Fox & Co | Vernon | 0 |
| Brenntag Pacific Inc | South Gate | 0 |
| Brenntag Pacific Inc | Santa Fe Springs | 0 |
| Aml Properties . Llc | South Gate | 0 |