Meet Our Experts
Our Principals
Brad Brechwald, PE, PLS
CEO, President
Thomas Zehnder, PE
Principal
Jorge Aguilar, PE
Principal
Robert Miller, PE
Principal
Kari Wagner, PE
Principal and Director of Water Resources
Craig A. Campbell, PE, PLS
Principal
Erik Rutherford, PE
Senior Mechanical Engineer
Andrea Kingsbury, PE
Civil Engineer
Sarah Huffman, PE
Civil Engineer
Jenni Metzger
Project Analyst
Jenna Mitchell
Human Resources Manager
Zachary Teske, PE
Director of Construction Management
Suzanne Baird. PLA 6114
Landscape Architect
Lonnie Richardson
Senior Project Analyst
John Wallace, PE
Consulting Engineer
George Marchenko, PLS
Senior Land Surveyor
Esau Blanco, PE, QSD/P
Senior Civil Engineer
Bill Callahan
Senior Environmental Compliance Specialist
Cris Disarufino
Senior Civil Designer
Daniel Herrera
Survey Technician I
Zachary Caipang, EIT
Associate Engineer
Chris Gardner
Business Development/Marketing Manager
Marco Castaneda, PLS
Professional Land Surveyor
Elvira Morla-Camacho, PE, QSD/P
Senior Civil Engineer
Wen Bin Sullivan, PE
Civil Engineer
Glenn Rider
Senior Environmental Compliance Specialist
Nate Whitcare, PE
Senior Designer
Valerie Huff, PE
Senior Civil Engineer
Greg Hulburd, PE, QSD/P
Civil Engineer
Matt Valez
Office Manager
Anthony Lehman
Assistant Resident Engineer
Paige Wirt
Administrative Assistant
Ryan Burmaster
Survey Technician
Gabriela Mendoza
Marketing Coordinator
Luz Garcia, PLS
Professional Land Surveyor
Kathy Redden
Executive Assistant
Gunner Hartman
Assistant Resident Engineer
Zach Markow, PE
Civil Engineer
Travis Vasquez, PE
Associate Engineer
Josh Whipple
Senior Mechanical Designer
Zac Powell, EIT
Associate Engineer
Conner Kelly, PE
Associate Engineer
Bill Lindahl
Senior Mechanical Engineer
Matt Wilkins, PLA, ASLA, APA
Director of Landscape Architecture
Julie Rae Wilson
Controller
Bryce Dilger, PLS
Senior Land Surveyor II
Clayton Bradshaw, PE, PLS
Director of Surveying
Tony Scalise
Assistant Resident Engineer
Ann Sever, PLA 4038
Senior Landscape Architect
Paula Richardson
Senior Accountant
Michael Hausman, PE
Civil Engineer
Kylie Castle
Marketing Coordinator
Brett Hadley, PE, QSD/P
Senior Civil Engineer
Ralph Schell
Senior Civil Designer
Alexandra Cass
Associate Engineer
Nick Sine, LSIT
Survey Technician
Ethan Pence, EIT
Associate Engineer
Rachel Hawthorne, PE
Director of Civil and Transportation Engineering
Mark Madonna, PE
Survey Technician
John Evans
Survey Technician I
Skye Thomas, PLS
Senior Land Surveyor
Steven Tanaka, PE, CSI, CCS
Principal Civil Engineer
Bryan Childress, PE
Senior Mechanical Engineer
Samar Saliba
Accounting
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