| BCBp Cherry Point Refinery | Blaine | 500+ | ● ACTIVE |
| P6Phillips 66 Refinery | Ferndale | 100–499 | ● ACTIVE |
Associated Petroleum Products, INC. | Tacoma | — | ● ACTIVE |
Cougar Den INC. | White Swan | — | ● ACTIVE |
Green Petroleum, LLC | Chelan | — | ● ACTIVE |
Interstate Concrete and Asphalt Company | Colville | — | ● ACTIVE |
| RIR5 INC. | Spokane | — | ● ACTIVE |
White Swan Farm Supply, INC | White Swan | — | ● ACTIVE |
| CACascade Asphalt Sealing CO | Tacoma | 1–19 | ◐ LIKELY ACTIVE |
| IPIko Pacific INC Sumas | Sumas | 100–499 | ◐ LIKELY ACTIVE |
| MAMarathon Anacortes Refinery | Anacortes | — | ◐ LIKELY ACTIVE |
| PRPabco Roofing Products | Tacoma | — | ◐ LIKELY ACTIVE |
| SOShell Opus Puget Sound Refinery | Anacortes | — | ◐ LIKELY ACTIVE |
| TATucci and Sons Lonestar Concrete | Tacoma | — | ◐ LIKELY ACTIVE |
| CPCentral Pre Mix Sullivan | Spokane | — | ◇ UNVERIFIED |
| PAPoe Asphalt Paving | Pullman | — | ◇ UNVERIFIED |
| AAAlon Asphalt Company Richmond Beach Terminal | Seattle | — | ◐ LIKELY ACTIVE |
| CMCadman Materials, INC. (cadman) | Everett | — | ◐ LIKELY ACTIVE |
| CWCemex Woodinville | Woodinville | — | ◐ LIKELY ACTIVE |
| CRColumbia Ready Mix Anderson Pit | Wapato | — | ◐ LIKELY ACTIVE |
| EREmerald Recycling | Seattle | — | ◐ LIKELY ACTIVE |
| FAFleet and Industrial Sup Ctr P S | Manchester | — | ◐ LIKELY ACTIVE |
| HPHm Pacific Northwest, INC. Dba Cadman Material INC | Kenmore | — | ◐ LIKELY ACTIVE |
| IMIcon Materials Seattle Asphalt | Seattle | — | ◐ LIKELY ACTIVE |
| NGNorthwest Granite Everett Site | Everett | — | ◐ LIKELY ACTIVE |
| PPPuget Paving | Puyallup | — | ◐ LIKELY ACTIVE |
| PMPyramid Materials, INC. | Silverdale | — | ◐ LIKELY ACTIVE |
| SPShamrock Paving INC | Spokane | — | ◐ LIKELY ACTIVE |
| SMSquak Mountain Materials INC | Issaquah | — | ◐ LIKELY ACTIVE |
| TSTucci & Sons Mcchord Plant | Tacoma | — | ◐ LIKELY ACTIVE |
| UOUS Oil and Refining CO Marine Terminal | Tacoma | — | ◐ LIKELY ACTIVE |
| UOUS Oil & Refining CO | Tacoma | — | ◐ LIKELY ACTIVE |
| WAWoodworth and Company INC Sumner | Sumner | — | ◐ LIKELY ACTIVE |
| GNGranite Northwest Olympia Plant | Olympia | — | ◐ LIKELY ACTIVE |
| IMIcon Materials | Auburn | — | ◐ LIKELY ACTIVE |
| LILakeside Industries Longview | Longview | — | ◐ LIKELY ACTIVE |
| ABA & B Asphalt Benton City Cedar Rapids | Benton City | — | ◇ UNVERIFIED |
| APAce Paving CO INC Johns Prairie Pit | Shelton | — | ◇ UNVERIFIED |
| APAce Paving Schilinger Pit Plant 4 | Belfair | — | ◇ UNVERIFIED |
| AAAlbina Asphalt CO T2 | Vancouver | — | ◇ UNVERIFIED |
| BBardahl | Seattle | — | ◇ UNVERIFIED |
| CMCadman Materials, INC (cadman) | Arlington | — | ◇ UNVERIFIED |
| CRCadman Redmond | Redmond | — | ◇ UNVERIFIED |
| CPCentral Pre-mix Concrete Company Yakima | Yakima | — | ◇ UNVERIFIED |
| CWCentral Washington Concrete Ephrata | Ephrata | — | ◇ UNVERIFIED |
| CIConrad Industries | Chehalis | — | ◇ UNVERIFIED |
| CBCreston Biodiesel Refinery | Creston | — | ◇ UNVERIFIED |
| EAErgon Asphalt & Emulsions, INC. | Pasco | — | ◇ UNVERIFIED |
| EAErgon Asphalt & Emulsions, INC. - Spokane Valley | Spokane | — | ◇ UNVERIFIED |
| FCFields Corporation Site | Kent | — | ◇ UNVERIFIED |