| CPCrown Plating INC | Vancouver | — | ◇ UNVERIFIED |
| EBElectroimpact Building G | Mukilteo | — | ◇ UNVERIFIED |
| ETElectro Tech Metal Finishing LLP | Vancouver | — | ◇ UNVERIFIED |
| ESElm Solutions CORP | Seattle | — | ◇ UNVERIFIED |
| GFGem Fabrication | Renton | — | ◇ UNVERIFIED |
| GMGlobal Metal Technologies | Spokane | — | ◇ UNVERIFIED |
| GSGraham Steel CORP | Kirkland | — | ◇ UNVERIFIED |
| GGreenberry | Vancouver | — | ◇ UNVERIFIED |
| GAGulassa and CO INC | Seattle | — | ◇ UNVERIFIED |
| INInland Nw Metallurgical Svs INC | Spokane | — | ◇ UNVERIFIED |
| KCKing County Brightwater Wwtp | Woodinville | — | ◇ UNVERIFIED |
| KMKlw Manufacturing and Design | Arlington | 1–19 | ◇ UNVERIFIED |
| LTLeduc Transportation INC | Vancouver | — | ◇ UNVERIFIED |
| LBLime Bike | Seattle | — | ◇ UNVERIFIED |
| LILloyd Industries | Spokane | — | ◇ UNVERIFIED |
| LPLynnwood Plating | Lynnwood | — | ◇ UNVERIFIED |
| MDMac Donald Miller Facility Solutions | Seattle | — | ◇ UNVERIFIED |
| MTMce Technologies INC | Seattle | — | ◇ UNVERIFIED |
| MFMetal Finishing Arlington | Arlington | — | ◇ UNVERIFIED |
| MFMetal Finishing Incorporated | Marysville | — | ◇ UNVERIFIED |
| NNNoll Norwesco LLC | Fife | — | ◇ UNVERIFIED |
| NMNorth Marina Bayside Abw Site | Everett | — | ◇ UNVERIFIED |
| NPNorthwest Precision INC | Sumner | 1–19 | ◇ UNVERIFIED |
| NSNorthwest Steel Fab INC Deer Park | Deer Park | — | ◇ UNVERIFIED |
| NMNw Market St Site | Seattle | — | ◇ UNVERIFIED |
| OIOregon Iron Works INC 3001 | Vancouver | — | ◇ UNVERIFIED |
| PCPacific Crest Industries INC | Kent | — | ◇ UNVERIFIED |
| PIPacific Industrial Supply Director St | Seattle | — | ◇ UNVERIFIED |
| PNPacific Northwest Plating | Vancouver | — | ◇ UNVERIFIED |
| POPacific Office Automation | Seattle | — | ◇ UNVERIFIED |
| PTPacific Truck Centers | Ridgefield | — | ◇ UNVERIFIED |
| PIPioneer Industries Seattle | Seattle | — | ◇ UNVERIFIED |
| PMProto Mfg | Spokane | — | ◇ UNVERIFIED |
| QFQual Fab INC | Seattle | — | ◇ UNVERIFIED |
| RBRainier Ballistics LLC | Tacoma | — | ◇ UNVERIFIED |
| RTRepair Technology INC | Seattle | — | ◇ UNVERIFIED |
| RPRestoration Plating | Spokane | — | ◇ UNVERIFIED |
| SSSchneider Simpson Sheet Metal | Tacoma | — | ◇ UNVERIFIED |
| SCSchwerin Concaves Walla Walla Site | Walla Walla | — | ◇ UNVERIFIED |
| SSSierra Sandblasting LLC | Tacoma | — | ◇ UNVERIFIED |
| SCSilgan Container CORP Vancouver | Vancouver | — | ◇ UNVERIFIED |
| SCSilgan Containers | Toppenish | — | ◇ UNVERIFIED |
| SISkills INC Paint | Seattle | — | ◇ UNVERIFIED |
| SCSmith Chrome Plating | Walla Walla | — | ◇ UNVERIFIED |
| STSmk Tri Cities INC | Pasco | 20–99 | ◇ UNVERIFIED |
| SISnyder Industries INC | Seattle | — | ◇ UNVERIFIED |
| SPSpecialty Plating CO | Mount Vernon | — | ◇ UNVERIFIED |
| SSSpecialty Svcs CO 26th St | Auburn | — | ◇ UNVERIFIED |
| SMSpokane Metal Finishing | Spokane | — | ◇ UNVERIFIED |
| SISpur Industries INC | Spokane | — | ◇ UNVERIFIED |
