| ATAlpha Tec Systems | Vancouver | WA | Chemical Manufacturing325413 | — | ◇ UNVERIFIED |
| APAmmonium Phosphate Fertilizer Spill on Hwy 90 | Moses Lake | WA | Chemical Manufacturing325312 | — | ◇ UNVERIFIED |
| AArtech | Renton | WA | Chemical Manufacturing325311 | — | ◇ UNVERIFIED |
| ASAscensus Specialties LLC | Elma | WA | Chemical Manufacturing325180 | — | ◇ UNVERIFIED |
| AAAudacious AF Inc | Olympia | WA | Chemical Manufacturing325199 | — | ◇ UNVERIFIED |
| BSBellingham Sunset Chevron | Bellingham | WA | Chemical Manufacturing325120 | — | ◇ UNVERIFIED |
| BMBenjamin Moore & CO | Tumwater | WA | Chemical Manufacturing325510 | — | ◇ UNVERIFIED |
| BGBig Gray Building LLC | Seattle | WA | Chemical Manufacturing325199 | — | ◇ UNVERIFIED |
| BSBiocontrol Systems INC | Bellevue | WA | Chemical Manufacturing325998 | — | ◇ UNVERIFIED |
| BMBiopol Mica | Mica | WA | Chemical Manufacturing325414 | — | ◇ UNVERIFIED |
| CWChemco Water Technology Site | Vancouver | WA | Chemical Manufacturing325998 | — | ◇ UNVERIFIED |
| CSChemstation Seattle | Auburn | WA | Chemical Manufacturing325611 | — | ◇ UNVERIFIED |
| CSChemstation Seattle LLC | Seattle | WA | Chemical Manufacturing325611 | — | ◇ UNVERIFIED |
| CSChemtrade Solutions Site | Kennewick | WA | Chemical Manufacturing325180 | — | ◇ UNVERIFIED |
| CSComposite Solutions CORP Sumner | Sumner | WA | Chemical Manufacturing325211 | — | ◇ UNVERIFIED |
| CACourtaulds Aerospace Site | Kirkland | WA | Chemical Manufacturing325520 | — | ◇ UNVERIFIED |
| CPCrop Production Services INC Tippett | Pasco | WA | Chemical Manufacturing325311 | — | ◇ UNVERIFIED |
| DIDiversey INC Bunzl | Liberty Lake | WA | Chemical Manufacturing325612 | — | ◇ UNVERIFIED |
| DCDouglas CO Pud Lincoln Rock Substation | East Wenatchee | WA | Chemical Manufacturing325120 | — | ◇ UNVERIFIED |
| ELEbbe LLC | Spokane Valley | WA | Chemical Manufacturing325998 | — | ◇ UNVERIFIED |
| EEEco Enterprises | Seattle | WA | Chemical Manufacturing325311 | — | ◇ UNVERIFIED |
| EMElement Materials Technology | Bothell | WA | Chemical Manufacturing325211 | — | ◇ UNVERIFIED |
| FIFlint Ink CORP | Kent | WA | Chemical Manufacturing325910 | — | ◇ UNVERIFIED |
| FFormula | Seattle | WA | Chemical Manufacturing325612 | — | ◇ UNVERIFIED |
| GSGenetic Systems CORP Elliott | Seattle | WA | Chemical Manufacturing325412 | — | ◇ UNVERIFIED |
| GWGmi Waste Technologies | Lakewood | WA | Chemical Manufacturing325991 | — | ◇ UNVERIFIED |
| GDGold Dogs | Seattle | WA | Chemical Manufacturing325510 | — | ◇ UNVERIFIED |
| HIHalosource INC | Bothell | WA | Chemical Manufacturing325199 | — | ◇ UNVERIFIED |
| HIHasa INC | Longview | WA | Chemical Manufacturing325188 | — | ◇ UNVERIFIED |
| INI-5 North On-ramp at Exit 27 | Kalama | WA | Chemical Manufacturing325180 | — | ◇ UNVERIFIED |
| IEInland Environmental | Pasco | WA | Chemical Manufacturing325180 | — | ◇ UNVERIFIED |
| JPJ Pod Just Evotec Biologics | Redmond | WA | Chemical Manufacturing325412 | — | ◇ UNVERIFIED |
| JFJust for Fun Site | Vancouver | WA | Chemical Manufacturing325211 | — | ◇ UNVERIFIED |
| KLKonzine llc DBA Raw Chemistry | Vancouver | WA | Chemical Manufacturing325620 | — | ◇ UNVERIFIED |
| LNLazarus Naturals Seattle | Seattle | WA | Chemical Manufacturing325411 | — | ◇ UNVERIFIED |
| LLLife Line Pet Nutrition, Inc. | Gig Harbor | WA | Chemical Manufacturing325411 | — | ◇ UNVERIFIED |
| LLLikku LLC Spokane Valley | Spokane Valley | WA | Chemical Manufacturing325411 | — | ◇ UNVERIFIED |
| MPMacmillan Piper | Tacoma | WA | Chemical Manufacturing325510 | — | ▲ REPORTED CLOSED |
| MBMaster Builders Solutions Admixtures US LLC | Kent | WA | Chemical Manufacturing325998 | — | ◇ UNVERIFIED |
| MAMatheson - Anacortes Hydrogen Plant | Anacortes | WA | Chemical Manufacturing325120 | — | ◇ UNVERIFIED |
| MMdrna | Bothell | WA | Chemical Manufacturing325412 | — | ◇ UNVERIFIED |
| MMMeeco Manufacturing Company, Inc. | Seattle | WA | Chemical Manufacturing325998 | — | ◇ UNVERIFIED |
| MIMetagenics INC Gig Harbor | Gig Harbor | WA | Chemical Manufacturing325411 | — | ◇ UNVERIFIED |
| MMitags-pmi | Seattle | WA | Chemical Manufacturing325910 | — | ◇ UNVERIFIED |
| MAModern Ag Products LLC | Pasco | WA | Chemical Manufacturing325311 | — | ◇ UNVERIFIED |
| MPMosaic Plant Response Redmond | Redmond | WA | Chemical Manufacturing325311 | — | ◇ UNVERIFIED |
| MHMountain Hi | Arlington | WA | Chemical Manufacturing325411 | — | ◇ UNVERIFIED |
| NNNic Nac Naturals LLC | Spokane | WA | Chemical Manufacturing325411 | — | ◇ UNVERIFIED |
| NRNite Run, LLC | Vancouver | WA | Chemical Manufacturing325411 | — | ◇ UNVERIFIED |
| NCNorth Coast Chemical CO | Seattle | WA | Chemical Manufacturing325612 | — | ◇ UNVERIFIED |
