• BB&A Environmental
• Blaine Tech Services
• CASCADE
• Clean Harbors
• Clear Creek Systems
• Confluence Environmental, Inc.
• EA Engineering, Science, and Technology, Inc., PBC
• ENDEVR Solutions
• ENTACT
• EPRO Services, Inc.
• ERIS 

• ETEC, Inc.
• Eurofins Environment Testing Northwest
• Evonik
• GPRS
• Holocene Drilling 
• Holt Services, Inc.
• Innovative Construction Solutions (ICS)
• Integral Consulting Inc.
• JRW Bioremediation
• Landau Associates
• LightBox|EDR
• Maul Foster & Alongi

• NV5
• Pace Analytical Laboratory
• Pacific Coast Carbon
• R Transport Inc
• Rain for Rent
• REGENESIS
• Restorical Research, LLC
• SGS North America Inc
• Shannon & Wilson
• SoilFreeze, Inc.
• Stantec