EMS - Environmental Consultants - Portland, Oregon

EIA, Inc. (Formerly Environmental Insurance Agency) - Beaverton, Oregon

Portland Environmental Services - Portland, Oregon

Cascade Environmental Engineering and Consulting, LLC - Portland, Oregon

Broadbent & Associates, Inc. - Portland, Oregon

Milwaukie Environmental Stewards Group - Milwaukie, Oregon

Tidewater Environmental Services, Inc - Vancouver, Washington

Cascade Environmental Group - Portland, Oregon

Field Environmental Instruments - Portland - Tigard, Oregon

Multnomah County Environmental Health - Portland, Oregon