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
Josh Whipple
Senior Mechanical Designer
Mark Madonna, PE
Survey Technician
Luz Garcia, PLS
Professional Land Surveyor
Bill Lindahl
Senior Mechanical Engineer
Glenn Rider
Senior Environmental Compliance Specialist
Zach Markow, PE
Civil Engineer
Elvira Morla-Camacho, PE, QSD/P
Senior Civil Engineer
Brett Hadley, PE, QSD/P
Senior Civil Engineer
John Wallace, PE
Consulting Engineer
Matt Wilkins, PLA, ASLA, APA
Director of Landscape Architecture
Wen Bin Sullivan, PE
Civil Engineer
Zac Powell, EIT
Associate Engineer
Clayton Bradshaw, PE, PLS
Director of Surveying
Rachel Hawthorne, PE
Director of Civil and Transportation Engineering
Nancie L. Adams, PE
Senior Civil Engineer
Nate Whitcare, PE
Senior Designer
Ethan Pence, PE
Civil Engineer
Alexandra Cass
Associate Engineer
Greg Hulburd, PE, QSD/P
Civil Engineer
Suzanne Baird. PLA 6114
Landscape Architect
Craig A. Campbell, PE, PLS
Consulting Engineer
Nick Sine, LSIT
Survey Technician
Zachary Teske, PE
Director of Construction Management
Steven Tanaka, PE, CSI, CCS
Principal Civil Engineer
Bryan Childress, PE
Senior Mechanical Engineer
Julie Rae Wilson
Controller
Matt Valez
Office Manager
Samar Saliba
Accounting
Cris Disarufino
Senior Civil Designer
Olivia Williams
Associate Engineer
Tim Peterson
Project Analyst Compliance Inspector
Conner Kelly, PE
Associate Engineer
Kathy Redden
Executive Assistant
George Marchenko, PLS
Senior Land Surveyor
Bill Callahan
Senior Environmental Compliance Specialist
Alvaro Escobedo
Associate Engineer
Erik Rutherford, PE
Senior Mechanical Engineer
Bryce Dilger, PLS
Senior Land Surveyor II
Gabriela Mendoza
Marketing Coordinator
Daniel Herrera
Survey Technician I
Michael Hausman, PE
Civil Engineer
Lonnie Richardson
Senior Project Analyst
Tony Scalise
Assistant Resident Engineer
Travis Vasquez, PE
Associate Engineer
Marco Castaneda, PLS
Professional Land Surveyor
Jenna Mitchell
Human Resources Manager
Ann Sever, PLA 4038
Senior Landscape Architect
Anthony Lehman
Assistant Resident Engineer
Sarah Huffman, PE
Civil Engineer
Paula Cappiello
Senior Accountant
Skye Thomas, PLS
Senior Land Surveyor
Zachary Caipang, EIT
Associate Engineer
Jenni Metzger
Project Analyst
Valerie Huff, PE
Senior Civil Engineer
Ryan Burmaster
Survey Technician
Ralph Schell
Senior Civil Designer
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