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