 General Chemical Bay Point Works | Pittsburg | CA | Chemical Manufacturing325180 | — | ◇ UNVERIFIED |
| GPGen Probe INC | San Diego | CA | Chemical Manufacturing325413 | — | ◇ UNVERIFIED |
| GPGeorgia Pacific CORP | Elk Grove | CA | Chemical Manufacturing325211 | — | ◇ UNVERIFIED |
| GEGfp Ethanol LLC Dba Calgren Renewable Fuels | Pixley | CA | Chemical Manufacturing325193 | — | ◇ UNVERIFIED |
| GSGilead Sciences INC | San Dimas | CA | Chemical Manufacturing325412 | — | ◇ UNVERIFIED |
| GSGilead Sciences, INC. | San Dimas | CA | Chemical Manufacturing325412 | — | ◇ UNVERIFIED |
| GAGillespie Ag Service | Porterville | CA | Chemical Manufacturing325314 | — | ◇ UNVERIFIED |
| GLGordon Laboratories INC | Carson | CA | Chemical Manufacturing325611 | — | ◇ UNVERIFIED |
| GIGps Industries | La Puente | CA | Chemical Manufacturing325181 | — | ◇ UNVERIFIED |
| GBGreenway Biotech INC | Santa Fe Springs | CA | Chemical Manufacturing325320 | — | ◇ UNVERIFIED |
| GGGrow Group Inc, Consumer & Prof Prods Group | Los Angeles | CA | Chemical Manufacturing325181 | — | ◇ UNVERIFIED |
| GMGrow More INC | East Rancho Dominguez | CA | Chemical Manufacturing325314 | — | ◇ UNVERIFIED |
| GPGs Polymers INC. | Mira Loma | CA | Chemical Manufacturing325211 | — | ◇ UNVERIFIED |
| GPGuardsman Products INC | South Gate | CA | Chemical Manufacturing325510 | — | ◇ UNVERIFIED |
| HIHalio, INC. | Hayward | CA | Chemical Manufacturing325998 | — | ◇ UNVERIFIED |
| HHHawthorne Hydroponics LLC Dba Vermicrop Organics | Olivehurst | CA | Chemical Manufacturing325314 | — | ◇ UNVERIFIED |
| HEHee Environmental Engineering | Adelanto | CA | Chemical Manufacturing325991 | — | ◇ UNVERIFIED |
| HPHeller Performance Polymers | Visalia | CA | Chemical Manufacturing325991 | — | ◇ UNVERIFIED |
| HCHenkel CORP | La Puente | CA | Chemical Manufacturing325991 | — | ◇ UNVERIFIED |
| HCHenkel Corporation | Irvine | CA | Chemical Manufacturing325520 | — | ◇ UNVERIFIED |
| HPHewlett Packard Mfg Div | Palo Alto | CA | Chemical Manufacturing325413 | — | ◇ UNVERIFIED |
| HSHexion Specialtiy Chemicals INC - Fremont | Fremont | CA | Chemical Manufacturing325110 | — | ◇ UNVERIFIED |
| HCHitachi Chemical Advanced Therapeutics Solutions | Mountain View | CA | Chemical Manufacturing325412 | — | ◇ UNVERIFIED |
| HJH J Baker Bro INC | Wilmington | CA | Chemical Manufacturing325180 | — | ◇ UNVERIFIED |
| HDHome Depot USA INC Hd1072 | Brea | CA | Chemical Manufacturing325188 | — | ◇ UNVERIFIED |
| HIHondo INC | Bakersfield | CA | Chemical Manufacturing325188 | — | ◇ UNVERIFIED |
| HIHoneywell International INC | El Segundo | CA | Chemical Manufacturing325000 | — | ◇ UNVERIFIED |
| HIHsh Interplan USA INC | Anaheim | CA | Chemical Manufacturing325510 | — | ◇ UNVERIFIED |
 Hudson Technologies Company | Ontario | CA | Chemical Manufacturing325120 | — | ◇ UNVERIFIED |
| HHHydrofarm - House & Garden Manufacturing Site | Arcata | CA | Chemical Manufacturing325314 | — | ◇ UNVERIFIED |
| HPHydroseal Polymers INC | Riverside | CA | Chemical Manufacturing325211 | — | ◇ UNVERIFIED |
| IAIci Americas INC Western Research Center | Richmond | CA | Chemical Manufacturing325320 | — | ◇ UNVERIFIED |
| IHIl Health & Beauty Natural Oils CO INC | Camarillo | CA | Chemical Manufacturing325620 | — | ◇ UNVERIFIED |
| ILImpax Laboratories INC | Hayward | CA | Chemical Manufacturing325412 | — | ◇ UNVERIFIED |
| IPImpax Pharmaceuticals Bldg 2 | Hayward | CA | Chemical Manufacturing325412 | — | ◇ UNVERIFIED |
| ICImperial Custom Cabinets INC | Lemon Grove | CA | Chemical Manufacturing325510 | — | ◇ UNVERIFIED |
| IEIndustrial Enameling CO | Baldwin Park | CA | Chemical Manufacturing325510 | — | ◇ UNVERIFIED |
| IRIndustrial Rubber Cement CO | City of Industry | CA | Chemical Manufacturing325520 | — | ◇ UNVERIFIED |
| IEInland Empire Regional Composting Author | Rancho Cucamonga | CA | Chemical Manufacturing325311 | — | ◇ UNVERIFIED |
| ICInmont CORP | Anaheim | CA | Chemical Manufacturing325510 | — | ◇ UNVERIFIED |
| IDIntegrated Dna Technologies | San Diego | CA | Chemical Manufacturing325199 | — | ◇ UNVERIFIED |
| IIIntegro INC | Helm | CA | Chemical Manufacturing325998 | — | ◇ UNVERIFIED |
| ITInvivoscribe Technologies | San Diego | CA | Chemical Manufacturing325414 | — | ◇ UNVERIFIED |
| JCJasco Chemical CORP | Mountain View | CA | Chemical Manufacturing325510 | — | ◇ UNVERIFIED |
| JIJinher INC | Chino | CA | Chemical Manufacturing325411 | — | ◇ UNVERIFIED |
| JLJ & L Custom Plastic Extrusions INC | South El Monte | CA | Chemical Manufacturing325211 | — | ◇ UNVERIFIED |
| JIJohnsondiversey, INC | Madera | CA | Chemical Manufacturing325611 | — | ◇ UNVERIFIED |
| JTJohn Taylor Fertilizers Company, INC - Twin Cities | Elk Grove | CA | Chemical Manufacturing325311 | — | ◇ UNVERIFIED |
| JCJones-hamilton Company | Newark | CA | Chemical Manufacturing325188 | — | ◇ UNVERIFIED |
| JSJr Simplot | French Camp | CA | Chemical Manufacturing325311 | — | ◇ UNVERIFIED |
