| JWJeld Wen Coatings Tukwila | Tukwila | — | ◇ UNVERIFIED |
| KSKleenco Site | Kent | — | ◇ UNVERIFIED |
| LMLeavitt Machinery | Tukwila | — | ◇ UNVERIFIED |
| MDMercer Distribution Facility | Seattle | — | ◇ UNVERIFIED |
| OMOlympic Mountain Products | Kent | — | ◇ UNVERIFIED |
| PNPace National LP | Kirkland | — | ◇ UNVERIFIED |
| QCQuality Controlled Manufacturing Site | Kent | — | ◇ UNVERIFIED |
| RPRudd Paint and Varnish Site | Seattle | — | ◇ UNVERIFIED |
| SCSeattle Childrens Hospital Research Inst | Seattle | — | ◇ UNVERIFIED |
| SSSummit Supply | Seattle | — | ◇ UNVERIFIED |
| TETex Enterprises INC | Auburn | — | ◇ UNVERIFIED |
| VMViox Mcdowell Site | Seattle | — | ◇ UNVERIFIED |
| WCWesmar Company Site | Seattle | — | ◇ UNVERIFIED |
| WCWood Care Systems | Kirkland | — | ◇ UNVERIFIED |
| ZZymogenetics | Seattle | — | ◇ UNVERIFIED |
| CICAF, Inc. | Maple Valley | 20–99 | ◐ LIKELY ACTIVE |
| GDGeneral Dynamics Ots (aerospace), INC. | Bothell | — | ◐ LIKELY ACTIVE |
 InBios International Inc. 307 Facility | Seattle | 20–99 | ◐ LIKELY ACTIVE |
| LLLilotree LLC | Redmond | — | ◐ LIKELY ACTIVE |
| NANorth America Coatings Tukwila | Tukwila | 1–19 | ◐ LIKELY ACTIVE |
| PProbi--Redmond | Redmond | 20–99 | ◐ LIKELY ACTIVE |
 Quest Products, LLC Kent | Kent | 1–19 | ◐ LIKELY ACTIVE |
| RIRegenerative Industrial, INC | Vashon | — | ▲ REPORTED CLOSED |
| RBRenew Biomaterials LLC | Seattle | — | ◐ LIKELY ACTIVE |
| TLTrexapharm LLC | Snoqualmie | — | ◐ LIKELY ACTIVE |
| ALAir Liquide Large Industries | Kent | — | ◇ UNVERIFIED |
| AArtech | Renton | — | ◇ UNVERIFIED |
| BGBig Gray Building LLC | Seattle | — | ◇ UNVERIFIED |
| BSBiocontrol Systems INC | Bellevue | — | ◇ UNVERIFIED |
| CHCharles H Lilly CO | Seattle | — | ◇ UNVERIFIED |
| CSChemstation Seattle | Auburn | — | ◇ UNVERIFIED |
| CSChemstation Seattle LLC | Seattle | — | ◇ UNVERIFIED |
| CACourtaulds Aerospace Site | Kirkland | — | ◇ UNVERIFIED |
| DWDP West LLC | Enumclaw | — | ◇ UNVERIFIED |
| EEEco Enterprises | Seattle | — | ◇ UNVERIFIED |
| FFormula | Seattle | — | ◇ UNVERIFIED |
| GSGenetic Systems CORP Elliott | Seattle | — | ◇ UNVERIFIED |
| GDGold Dogs | Seattle | — | ◇ UNVERIFIED |
| JPJ Pod Just Evotec Biologics | Redmond | — | ◇ UNVERIFIED |
| LNLazarus Naturals Seattle | Seattle | — | ◇ UNVERIFIED |
| MBMaster Builders Solutions Admixtures US LLC | Kent | — | ◇ UNVERIFIED |
| MMMeeco Manufacturing Company, Inc. | Seattle | — | ◇ UNVERIFIED |
| MMitags-pmi | Seattle | — | ◇ UNVERIFIED |
| MPMosaic Plant Response Redmond | Redmond | — | ◇ UNVERIFIED |
| NCNorth Coast Chemical CO | Seattle | — | ◇ UNVERIFIED |
| RORotary Offset Press INC | Kent | — | ◇ UNVERIFIED |
| SRStyro Recycle, LLC | Kent | — | ◇ UNVERIFIED |
| TLToyota Lift Northwest | Kent | — | ◇ UNVERIFIED |
| TNTPS Nutrients Inc. (Treasury Stock) | Seattle | — | ◇ UNVERIFIED |
| TLTsukineko LLC | Redmond | — | ◇ UNVERIFIED |
