| EGEdgemont Group | Wenatchee | WA | Chemical Manufacturing325411 | — | ◇ UNVERIFIED |
| EMElitechgroup Molecular Diagnostics | Bothell | WA | Chemical Manufacturing325413 | — | ◇ UNVERIFIED |
| ETElysian Taproom | Seattle | WA | Chemical Manufacturing325510 | — | ◇ UNVERIFIED |
| EMEm Matson Jr CO INC | North Bend | WA | Chemical Manufacturing325320 | — | ◇ UNVERIFIED |
| FAFairn and Swanson | Seattle | WA | Chemical Manufacturing325992 | — | ◇ UNVERIFIED |
| FSFiberglass Structures | Arlington | WA | Chemical Manufacturing325211 | — | ◇ UNVERIFIED |
| FPFikes Products and Services | Kent | WA | Chemical Manufacturing325510 | — | ◇ UNVERIFIED |
| FSFood Service of America Kent | Kent | WA | Chemical Manufacturing325211 | — | ◇ UNVERIFIED |
| GWGaco Western LLC | Tukwila | WA | Chemical Manufacturing325212 | — | ◇ UNVERIFIED |
| GDGeorge Deruyter and Sons Dairy | Outlook | WA | Chemical Manufacturing325120 | — | ◇ UNVERIFIED |
| GTGless Trucking | Auburn | WA | Chemical Manufacturing325211 | — | ◇ UNVERIFIED |
| HIHalosource INC | Raymond | WA | Chemical Manufacturing325199 | — | ◇ UNVERIFIED |
| HIHalosource INC | Bothell | WA | Chemical Manufacturing325998 | — | ◇ UNVERIFIED |
| HVHidden Valley Transfer Station and Landfill | Puyallup | WA | Chemical Manufacturing325199 | — | ◇ UNVERIFIED |
| HGHoneybear Growers | Brewster | WA | Chemical Manufacturing325311 | — | ◇ UNVERIFIED |
| IEI90 Express Finishing INC | Spokane | WA | Chemical Manufacturing325510 | — | ◇ UNVERIFIED |
| I9I 90 Express Finishing Spokane Valley | Spokane Valley | WA | Chemical Manufacturing325510 | — | ◇ UNVERIFIED |
| ICInterplastic Corporation | Kent | WA | Chemical Manufacturing325211 | — | ◇ UNVERIFIED |
| JIJanicki Industries INC Sedro Woolley | Sedro Woolley | WA | Chemical Manufacturing325991 | — | ◇ UNVERIFIED |
| JWJeld Wen Coatings Tukwila | Tukwila | WA | Chemical Manufacturing325510 | — | ◇ UNVERIFIED |
| KWKemira Water Solutions INC Longview | Longview | WA | Chemical Manufacturing325211 | — | ◇ UNVERIFIED |
| KSKleenco Site | Kent | WA | Chemical Manufacturing325612 | — | ◇ UNVERIFIED |
| LCLakewood City Muni Sw | Lakewood | WA | Chemical Manufacturing325992 | — | ◇ UNVERIFIED |
| LMLeavitt Machinery | Tukwila | WA | Chemical Manufacturing325910 | — | ◇ UNVERIFIED |
| LILyell Immunopharma INC Bothell | Bothell | WA | Chemical Manufacturing325414 | — | ◇ UNVERIFIED |
| MPMds Pharma Services | Bothell | WA | Chemical Manufacturing325412 | — | ◇ UNVERIFIED |
| MDMercer Distribution Facility | Seattle | WA | Chemical Manufacturing325320 | — | ◇ UNVERIFIED |
| NSNorth Star Yachts Site | Kalama | WA | Chemical Manufacturing325181 | — | ◇ UNVERIFIED |
| OCOccidental Chemical Corporation Site | Tacoma | WA | Chemical Manufacturing325181 | — | ◇ UNVERIFIED |
| OCOlympic Chemical CORP | Tacoma | WA | Chemical Manufacturing325998 | — | ◇ UNVERIFIED |
| OMOlympic Mountain Products | Kent | WA | Chemical Manufacturing325620 | — | ◇ UNVERIFIED |
| PNPace National LP | Kirkland | WA | Chemical Manufacturing325611 | — | ◇ UNVERIFIED |
| PPPacific Powder Site | Olympia | WA | Chemical Manufacturing325920 | — | ◇ UNVERIFIED |
| PPParker Paint Manufacturing CO INC | Tacoma | WA | Chemical Manufacturing325510 | — | ◇ UNVERIFIED |
| PEPe Ell Hulk Hauling | Aberdeen | WA | Chemical Manufacturing325199 | — | ◇ UNVERIFIED |
| PCPq Corporation | Tacoma | WA | Chemical Manufacturing325188 | — | ◇ UNVERIFIED |
| QCQuality Controlled Manufacturing Site | Kent | WA | Chemical Manufacturing325211 | — | ◇ UNVERIFIED |
| QCQuantum Clean | Washougal | WA | Chemical Manufacturing325188 | — | ◇ UNVERIFIED |
| RMRsa Microtech Westar Lane | Burlington | WA | Chemical Manufacturing325314 | — | ◇ UNVERIFIED |
| RPRudd Paint and Varnish Site | Seattle | WA | Chemical Manufacturing325510 | — | ◇ UNVERIFIED |
| SCSeattle Childrens Hospital Research Inst | Seattle | WA | Chemical Manufacturing325412 | — | ◇ UNVERIFIED |
| SGSeattle Genetics INC | Bothell | WA | Chemical Manufacturing325414 | — | ◇ UNVERIFIED |
| SSSimplot Soilbuilders Prosser | Prosser | WA | Chemical Manufacturing325199 | — | ◇ UNVERIFIED |
| SMSpecialty Minerals INC Wallula | Wallula | WA | Chemical Manufacturing325188 | — | ◇ UNVERIFIED |
| SMSpecialty Minerals Longview | Longview | WA | Chemical Manufacturing325188 | — | ◇ UNVERIFIED |
| SPSpecialty Products | Lakewood | WA | Chemical Manufacturing325211 | — | ◇ UNVERIFIED |
| SSpringstar | Woodinville | WA | Chemical Manufacturing325320 | — | ◇ UNVERIFIED |
| SISterling International | Spokane | WA | Chemical Manufacturing325414 | — | ◇ UNVERIFIED |
| SSSummit Supply | Seattle | WA | Chemical Manufacturing325110 | — | ◇ UNVERIFIED |
| SFSunrise Fiberglass Engineering Site | Shelton | WA | Chemical Manufacturing325211 | — | ◇ UNVERIFIED |
