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