| GPGeorge Pocock Racing Shells | Everett | — | ◇ UNVERIFIED |
| HIHp INC Vancouver Wav Facility | Vancouver | — | ◇ UNVERIFIED |
| HPHummingbird Precision Machine | Lacey | — | ◇ UNVERIFIED |
| H1Hwy 14 Mp 23 Burlington Environmental LLC Release | Washougal | — | ◇ UNVERIFIED |
| ISIntermec Site | Mukilteo | — | ◇ UNVERIFIED |
| IEItek Energy | Bellingham | — | ◇ UNVERIFIED |
| IEItek Energy | Bellingham | — | ◇ UNVERIFIED |
| JCJan-R Corporation | Sedro Woolley | — | ◇ UNVERIFIED |
| KTKeysight Technologies | Everett | — | ◇ UNVERIFIED |
| KCKistler-morse Corporation | Bothell | — | ◇ UNVERIFIED |
| KCK/o Corporation | Kent | — | ◇ UNVERIFIED |
| KCKymeta Corporation | Woodinville | — | ◇ UNVERIFIED |
| LELawrence Electronics CO | Burien | — | ◇ UNVERIFIED |
| LMLockheed Martin Laser and Sensor Systems Bothell | Bothell | — | ◇ UNVERIFIED |
| MAMc Anderson Trucking | North Bend | — | ◇ UNVERIFIED |
| MPMedtronic Physio Control | Redmond | — | ◇ UNVERIFIED |
| MMMetal Marine Pilot INC | Fircrest | — | ◇ UNVERIFIED |
| MEMonaco Enterprises | Spokane | — | ◇ UNVERIFIED |
| MLMsi, LTD | Kennewick | — | ◇ UNVERIFIED |
| MEMurphy Electronics | Redmond | — | ◇ UNVERIFIED |
| NTNanostring Technologies | Seattle | — | ◇ UNVERIFIED |
| NINlight INC Camas | Camas | — | ◇ UNVERIFIED |
| PBPlexus Bwa | Bothell | — | ◇ UNVERIFIED |
| PEPulse Electronics INC | Vancouver | — | ◇ UNVERIFIED |
| QQQCC Quality Controls Corporation | Lynnwood | — | ◇ UNVERIFIED |
| QEQualitel Everett | Everett | — | ◇ UNVERIFIED |
| RCRaytheon Company Poulsbo | Poulsbo | — | ◇ UNVERIFIED |
| SGSeaview Global | Otis Orchards | — | ◇ UNVERIFIED |
| SISensitech, Incorporated | Redmond | — | ◇ UNVERIFIED |
| SESequoyah Electric | Redmond | — | ◇ UNVERIFIED |
| SSServatron Site | Spokane | — | ◇ UNVERIFIED |
| SSShimadzu Scientific Instruments INC | Bothell | — | ◇ UNVERIFIED |
| SESpace Exploration Technologies 2 | Redmond | — | ◇ UNVERIFIED |
| SSSpacex Site 1 | Redmond | — | ◇ UNVERIFIED |
| SSSpacex Site 4 | Redmond | — | ◇ UNVERIFIED |
| SSSpacex Site 5 | Woodinville | — | ◇ UNVERIFIED |
| SSwaddledesigns | Tukwila | — | ◇ UNVERIFIED |
| SISymetrix, Inc. | Mountlake Terrace | — | ◇ UNVERIFIED |
| TTTeo Technologies | Mukilteo | — | ◇ UNVERIFIED |
| TEThd Electronics Limited | Seattle | — | ◇ UNVERIFIED |
| TFThermo Fisher Scientific | Bothell | — | ◇ UNVERIFIED |
 Universal Avionics Systems CORP Willows | Redmond | — | ◇ UNVERIFIED |
| WMWa317945328 - Micro Radian Instruments (washington) INC | Bellingham | — | ◇ UNVERIFIED |
| WEWa317947154 - Echo Ultrasonics LLC | Bellingham | — | ◇ UNVERIFIED |
| WTWa317947476 - Trufab LLC | Shelton | — | ◇ UNVERIFIED |
| WAWa317947631 - Advanced Wellness Products, INC. | Bellingham | — | ◇ UNVERIFIED |
| WAWa317947827 - Afab Enterprises LLC | Anacortes | — | ◇ UNVERIFIED |
| WHWa317948263 - Honeywell International | Renton | — | ◇ UNVERIFIED |
| WSWa317948388 - Sagetech Corporation | White Salmon | — | ◇ UNVERIFIED |
| WHWa317948799 - Hummingbird Precision Machine CO | Lacey | — | ◇ UNVERIFIED |
