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