| MMMonroe Machined Products, INC. | Seatac | — | ◐ LIKELY ACTIVE |
| OSOxarc Springfield | Spokane | 1–19 | ◐ LIKELY ACTIVE |
| PUPat Uchida Property | Kelso | — | ◐ LIKELY ACTIVE |
| PIPolychemie INC | Longview | — | ◐ LIKELY ACTIVE |
| PFPraxair Fife | Tacoma | — | ◐ LIKELY ACTIVE |
| PPPurcell Painting & Coatings | Tukwila | — | ◐ LIKELY ACTIVE |
| SNSeagen North Creek | Bothell | — | ◐ LIKELY ACTIVE |
| SSSupplement Sciences INC 6300 Ne Campus Dr | Vancouver | — | ◐ LIKELY ACTIVE |
| APApplied Plant Science | Woodland | — | ◐ LIKELY ACTIVE |
| CTColor Tech Mountlake Terrace | Mountlake Terrace | — | ◐ LIKELY ACTIVE |
| GAGenzyme a Sanofi Company | Lynnwood | — | ◐ LIKELY ACTIVE |
| HMHsd Maintenance | Burien | — | ◐ LIKELY ACTIVE |
| JHJb Hunt Distribution Facility | Sumner | — | ◐ LIKELY ACTIVE |
| JTJuno Therapeutics Manufacturing Plant | Bothell | — | ◐ LIKELY ACTIVE |
| OCOlympic Chemical CORP | Tacoma | — | ◐ LIKELY ACTIVE |
| PAPioneer Americas INC | Tacoma | — | ◐ LIKELY ACTIVE |
| RTRiverside Topsoil | Snohomish | — | ◐ LIKELY ACTIVE |
| TMTacoma Metals INC | Tacoma | — | ◐ LIKELY ACTIVE |
| TMTwelve - Moses Lake Site | Moses Lake | — | ◐ LIKELY ACTIVE |
| WEWilbur Ellis CO Pomeroy | Pomeroy | — | ◐ LIKELY ACTIVE |
| 5U51 University Building | Seattle | — | ◇ UNVERIFIED |
| 9I999 INC | Pasco | — | ◇ UNVERIFIED |
| ABAccess Business Group LLC Quincy | Quincy | — | ◇ UNVERIFIED |
| APAir Products Manufacturing CORP | Puyallup | — | ◇ UNVERIFIED |
| ACAmtech Corporation Site | Yelm | — | ◇ UNVERIFIED |
| AIApex in Care of Pacific Shipping | Kent | — | ◇ UNVERIFIED |
| AWArch Wood Protection | Kalama | — | ◇ UNVERIFIED |
| AAAsahipen America INC | Seattle | — | ◇ UNVERIFIED |
| BCBasf Construction Chemicals INC | Kent | — | ◇ UNVERIFIED |
| BLBayview Limousine Service | Seattle | — | ◇ UNVERIFIED |
| BBBbc Biochemical | Mount Vernon | — | ◇ UNVERIFIED |
| BDBetz Dearborn Washougal | Washougal | — | ◇ UNVERIFIED |
 Bio Rad Laboratories Redmond | Redmond | — | ◇ UNVERIFIED |
| BFBlue Falls USA | Spokane | — | ◇ UNVERIFIED |
| BHBlue Heron Biotech, LLC | Bothell | — | ◇ UNVERIFIED |
| BPBoc Process Gas Solutions | Vancouver | — | ◇ UNVERIFIED |
| CCCcp Composites US LLC Centralia | Centralia | — | ◇ UNVERIFIED |
| CBCepheid - Bothell | Bothell | — | ◇ UNVERIFIED |
| CPChemtrade Performance Chemicals US LLC | Kalama | — | ◇ UNVERIFIED |
| CSChemtrade Solutions LLC Vancouver | Vancouver | — | ◇ UNVERIFIED |
| CAChs Agronomy Terminal | Clarkston | — | ◇ UNVERIFIED |
| CWCjc West LLC | Chehalis | — | ◇ UNVERIFIED |
| CPClover Park Technical College Bldg 25 | Lakewood | — | ◇ UNVERIFIED |
| CICmc Icos Biologics INC | Bothell | — | ◇ UNVERIFIED |
| CPContainer Properties LLC | Tukwila | — | ◇ UNVERIFIED |
| CCCook Composites and Polymers CO | Arlington | — | ◇ UNVERIFIED |
| CPCrop Production Services Moses Lake | Moses Lake | — | ◇ UNVERIFIED |
| DIDalys INC | Seattle | — | ◇ UNVERIFIED |
| DUDecco US Postharvest | East Wenatchee | — | ◇ UNVERIFIED |
| DMDevries Moving-packing-storage | Spokane | — | ◇ UNVERIFIED |
