| BHBlue Heron Biotech, LLC | Bothell | WA | Chemical Manufacturing325414 | — | ◇ UNVERIFIED |
| BPBoc Process Gas Solutions | Vancouver | WA | Chemical Manufacturing325120 | — | ◇ UNVERIFIED |
| CCCcp Composites US LLC Centralia | Centralia | WA | Chemical Manufacturing325211 | — | ◇ UNVERIFIED |
| CPChemtrade Performance Chemicals US LLC | Kalama | WA | Chemical Manufacturing325180 | — | ◇ UNVERIFIED |
| CSChemtrade Solutions LLC Vancouver | Vancouver | WA | Chemical Manufacturing325180 | — | ◇ UNVERIFIED |
| CAChs Agronomy Terminal | Clarkston | WA | Chemical Manufacturing325314 | — | ◇ UNVERIFIED |
| CWCjc West LLC | Chehalis | WA | Chemical Manufacturing325194 | — | ◇ UNVERIFIED |
| CPClover Park Technical College Bldg 25 | Lakewood | WA | Chemical Manufacturing325520 | — | ◇ UNVERIFIED |
| CICmc Icos Biologics INC | Bothell | WA | Chemical Manufacturing325412 | — | ◇ UNVERIFIED |
| CPContainer Properties LLC | Tukwila | WA | Chemical Manufacturing325000 | — | ◇ UNVERIFIED |
| CCCook Composites and Polymers CO | Arlington | WA | Chemical Manufacturing325510 | — | ◇ UNVERIFIED |
| CPCrop Production Services Moses Lake | Moses Lake | WA | Chemical Manufacturing325311 | — | ◇ UNVERIFIED |
| DUDecco US Postharvest | East Wenatchee | WA | Chemical Manufacturing325320 | — | ◇ UNVERIFIED |
| DMDevries Moving-packing-storage | Spokane | WA | Chemical Manufacturing325510 | — | ◇ UNVERIFIED |
| DODominion Organics | Ferndale | WA | Chemical Manufacturing325311 | — | ◇ UNVERIFIED |
| EBEden Bioscience | Bothell | WA | Chemical Manufacturing325414 | — | ◇ UNVERIFIED |
| 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 |
| GSGilead Sciences INC | Seattle | WA | Chemical Manufacturing325412 | — | ▲ REPORTED CLOSED |
| 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 |
| 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 |
