Our Principals
ellis
Robert Ellis, President, COO
Mr. Ellis serves as President and Chief Operations Officer for Yaggy Colby Associates.  He has a BA in Business Management and has worked in the Engineering field for over 24 years.  Bob draws from past experience working as a surveyor, designer, project manager and business manager.
Samuelson
Scott Samuelson, PE, CFO
Mr. Samuelson serves as Chief Financial Officer and Director of Transportation Services for Yaggy Colby Associates.  He is also the Managing Partner of the Rochester office.  He has over 23 years of experience as a licensed Professional Engineer in the field of Transportation Engineering .
McCarthy
Terrance McCarthy, Vice President
Mr. McCarthy serves as Vice President and Managing Partner of Yaggy Colby Associates Iowa Operation and is also Corporate Director of Municipal Services.  He has over 29 years of experience in virtually every type of Municipal Engineering.
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Michael Court, PE, Vice President
Mr. Court serves as Vice President of Yaggy Colby Associates and Managing Partner of our Delafield office.  He is a licensed Professional Engineer with over 22 years of experience in Land Development, Municipal Engineering and Storm Water Management.
Mickelson
Mark Mickelson, PE, Principal
Mr. Mickelson serves as Principal for Yaggy Colby Associates and the Department Head of Land Development for the Delafield office.  With a Masters Degree in Engineering and 23 years of experience, Mark specializes in Storm Water Analysis and Design, Municipal Engineering and Land Development.
 


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