Zipper Geo Associates

Geotechnical and Environmental Consulting

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Our People

Thomas Jones, Managing Principal

Thomas Jones
Dave Williams, Principal Engineering Geologist

Dave Williams
Robert Ross, Principal Geotechnical Engineer, CFO

Principal Geotechnical Engineer, CFO
Sean W. Donnan, Principal Geologist

Sean W. Donnan
John Zipper, Senior Consultant

John Zipper
James Georgis, Principal Engineering Geologist

Principal Engineering Geologist
Jon Einarsen, Principal Geologist

Principal Geologist
Charles Cacek, L.E.G., Associate Geologist

Chuck Cacek
Ryan Scheffler, Senior Geotechnical Engineer

Senior Geotechnical Engineer
Samuel Sommers, P.E., Project Engineer

Samuel Sommers
Thomas Burchett, M.Sc., Staff Engineering Geologist

Thomas Burchett
Tanner Wagoner, Staff Engineer

Tanner Wagoner
Stephen Miller, Staff Engineer

Stephen Miller
Jeff Tinklepaugh, Staff Geologist

Jeff Tinklepaugh
Evelyn Conrado, Staff Geologist

Evelyn Conrado
Bryan Fowler, Staff Geologist

Bryan Fowler, Staff Geologist

Zipper Geo Associates, LLC
19019 36th Avenue West, Suite E
Lynnwood, Washington 98036

(425) 582-9928

A King County Certified Small Contractor

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