WABO Registered Special Inspection Agencies
Click on agency name for registration information

Western Washington Locations 

A.A.R. Testing Laboratory, Inc.

Redmond, Washington

Columbia West Engineering, Inc.

Vancouver, Washington

Construction Testing Laboratories, Inc.

Puyallup, Washington

GeoTest Services, Inc.

Arlington, Washington

GeoTest Services, Inc.

Bellingham, Washington

Hayre McElroy & Associates, LLC

Redmond, Washington

HGE/Jason Engineering & Consulting Business, Inc.

Auburn, Washington

HWA GeoSciences Inc.

Bothell, Washington 

King County DOT Road Services Division

Renton, Washington

Kleinfelder, Inc.

Redmond, Washington

Krazan & Associates, Inc.

Lynnwood, Washington

Krazan & Associates, Inc.

Poulsbo, Washington

Krazan & Associates, Inc.

Puyallup, Washington

Materials Testing & Consulting, Inc.

Burlington, Washington

Materials Testing & Consulting, Inc.

Olympia, Washington

Mayes Testing Engineers, Inc.

Lynnwood, Washington

Mayes Testing Engineers, Inc.

Tacoma, Washington

O'Neill Service Group

Bellevue, Washington

Otto Rosenau & Associates, Inc.

Seattle, Washington 

Pacific Testing & Inspection, LLC

Centralia, Washington 

Professional Service Industries, Inc.

Lynnwood, Washington 

Professional Service Industries, Inc.

Tacoma, Washington 

Terracon Consultants, Inc.

Mountlake Terrace, Washington

Terracon Consultants, Inc.

Lakewood, Washington 
Eastern Washington & Idaho Locations 

Allwest Testing and Engineering, LLC

Spokane Valley, Washington

Budinger & Associates

Spokane Valley, Washington 

GeoEngineers, Inc.

Spokane, Washington 

Materials Testing & Inspection

Boise, Idaho

STRATA

Spokane, Washington
Oregon Locations 

ACS Testing, Inc.

Tigard, Oregon 

Carlson Testing, Inc.

Tigard, Oregon 

KPFF Consulting Engineers (Inspection ONLY)

Portland, Oregon

Mayes Testing Engineers, Inc.

Portland, Oregon 

Northwest Geotech, Inc.

Wilsonville, Oregon 

Professional Service Industries, Inc.

Portland, Oregon

 

 

 
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