Paul Yerkes
President
Abdul Dahhan
VP of Engineering
Beth Morrison
Office Coordinator/Assistant Project Manager
Dylan Brockland
Field Technician
Eric Brown
Director of Field Services
Jason Sullivan
Laboratory Manager
Jeff Rothamer
Director of Technical Services
Lila Ben Si Said
Documentation Engineer
Riyad Wahab
Senior Geotechnical Engineer
Sandra Yerkes
Spouse
Steve Richter
Director of Quality Control
Gallagher Asphalt Corporation
Thornton, Illinois
Common Ownership Company Member