Nathan Lenhard
Geology Staff
Nathan Lenhard
Geology Staff
Thomas Abkemeier
Vice President, Saint Louis Office Manager
Nathan Adamczak
Geotechnical Staff
Steve Adamczak
Vice President
Monique Anderson
Vice President
David Asunskis
Associate
Jorge Avalos
Engineer
Jim Bailey
Senior Associate, National Well Services Director
Alexander Baird
Engineer
Elizabeth Barnett
Senior Geologist
Peter Bayley
Senior Professional Geologist
Veronica Biesiada
Geologist
Rob Blasberg
Vice President
Bronson Bowling
St. Louis Office Geotechnical Services Group Leader
Justin Bowman
Geology Staff
Stan Boyle
Senior Vice President
Kyle Brennan
Vice President, Anchorage Office Manager
Craig Brooks
Laboratory Manager
Kelli Browning
Lab Manager
Gerard Buechel
Senior Vice President
Jason Buenker
Senior Associate
Jeremy Butkovich
Vice President
Tri Buu
Geotechnical Engineer
Christian Canfield
Environmental Staff
Bill Capaul
Geologist
Pete Castro
Senior Associate
Stephen Chase
Geotechnical Staff
Debanik Chaudhuri
Senior Associate
Wei-Ming (Rick) Chen
Engineer
Joe Clare
Tunnel & Underground Practice Leader
Merci Clinton
Biologist
Ryan Collins
Associate
Sarah Corbin
Senior Biologist
Stan Crawforth
Vice President
Adam Crispin
Senior Biologist
Daniel Cruz
Geology Staff
Colin Cummins
Senior Engineer
Christopher Darrah
Vice President, Fairbanks Office Manager
Kailyn Davis
Environmental Geology Staff
R. Travis Deane
Vice President
Elyse Denkers
Ecologist / Permitting Specialist
Stephen Diem
Senior Associate
Forrest Dobson
Geotechnical Staff
Morgen Donohue
Environmental Staff
Elliot Draxler
Geotechnical Staff
James Dutt
Associate
Stephen Ellingson
Associate Vice President
Gregory Fischer
President
Hollie Ellis
Treasurer/Secretary
Dana Fjare
Environmental Scientist
Dean Francuch
Senior Associate
Andrew Frick
Environmental Scientist
Kristen Freiburger
Senior Associate
Samuel Furmanski
Geotechnical Staff
Peggy Ganse
Vice President
Scott Garbs
Associate
Scott Gaulke
Vice President
Katarah Glashan
Geotechnical Staff
Stafford Glashan
Senior Engineer
Fawn Glassburn
Geology Staff
Tiffany Green
Environmental Scientist
Paul Godlewski
Vice President
Matt Grizzell
Associate
Roberto Guardia
Vice President
Gustavo Guerrero
Geotechnical Staff
Nina Guizzetti
Geotechnical Staff
Mark Halbert
Materials Technican
Mason Hall
Environmental Staff
Corbett Hansen
Senior Associate
Mike Harney
Vice President, Seattle Office Manager
Scott Harris
Geotechnical Staff
Joseph Heavin
Associate
Judy Hepner
Environmental Staff
Russell Hepner
Geotechnical Staff
Randy Hessong
Environmental Scientist
Sheila Hinckley
Senior Environmental Scientist
Adrian Holmes
Associate
Aimee Holmes
Senior Engineer & Geologist
Oliver Hoopes
Senior Associate
Ted Hopkins
Vice President
Shoshana Howard
Associate
Alia Hubbard
Environmental Staff
Jerry Jacksha
Senior Associate
David Jacobson
Senior Geologist
Ashley Jaramillo
Senior Chemist
Michael Jaramillo
Senior Chemist
Carlos Jimenez
Geotechnical Staff
Per Johnson
Associate
Hayley Justinak
Geotechnical Staff
Kerem Kalkay
Senior Engineer
Kelsey Karney
Geology Staff
Gus Kays
Senior Associate
Thomas Keatts
Senior Engineer
Chris Kemp
Senior Geologist
Cary Kindberg
Senior Geospatial Coordinator
Patrick Kinsella
Associate
Samantha Kleich
Geotechnical Staff
Annette Kovacs
Laboratory Supervisor, Lead Laboratory Technician
Bill Kremer
Senior Associate
Michael Kucker
Vice President, Underground Services Deputy Director
Louis Larios
Geotechnical Staff
Robert Leaf
Geotechnical Staff
Carole Leigh
Senior Associate
Brentton Leeper
Geotechnical Staff
Mark Lockwood
Senior Associate
Paul Macklin
Vice President
Austin Madsen
Geology Staff
Peter Malicky
Environmental Scientist
Daniel Markowski
Geologist
Vonmarie Martinez
Senior Engineer
Amber Masters
Environmental Scientist
Wendy Mathieson
Vice President
Logan McClish
Hydraulic Staff
Connor McCord
Geology Staff
Alexandra McCracken
Geology Staff
Neal McCulloch
Vice President, Director of Railroad Services
Shae McLafferty
Geology Staff
Stephen McLandrich
Associate
Dan McMahon
Vice President
Jennifer Mead
Senior Engineer
Elliott Mecham
Senior Associate
Jordan Melby
Senior Engineer
Dale Miller
Engineer
Elizabeth Milodragovich
Engineering Geologist
Bob Mitchell
Board of Directors - Chair
Pedro Garcia Montesinos
Geotechnical Staff
Benjamin Moore
Senior Engineer
David Nemetz
Senior Environmental Geologist
Travis Nguyen
Senior Associate
Keith Nottingham
Geologist
Hamid Reza Nouri
Senior Engineer
Tom Oborne
Geologist
Mark Ohlstrom
Vice President
Gregory Olsen
Engineer
LeeAnne Osgood
Associate
Grace Paananen
Geotechnical Staff
Martin Page
Vice President
Corey Pagels
Hydrogeology Staff
Eric Paslack
Associate
Samuel Pastor
Geotechnical Staff
Beatrix Paulay
Geotechnical Staff
Dave Pell
Geotechnical Staff
Chris Pepe
Environmental Scientist
Bill Perkins
Vice President, Earthquake Engineering Services
Emily Persinger
Geology Staff
Kathryn Petek
Vice President
Ryan Peterson
Engineer
Andrew Piccini
Engineering Staff
Park Piao
Vice President
William Pollock
Geotechnical Staff
Wendy Presler
Senior Associate
Kyle Radach
Geological Engineering Staff
David Randall
Senior Environmental Scientist
Jessica Randolph
Senior Geotechnical Engineer
Matthew Reed
Geology Staff
Brian Reznick
Vice President
August Ridde
Geologist
Katie Ring
Environmental Scientist
Jake Risken
Senior Engineer
Justin Risley
Environmental Staff
Alec Rizzo
Geoscientist
Red Robinson
Senior Vice President, Director of Underground Services
Kyle Romney
Senior Engineer
Robert Romocki
Senior Consultant
Christopher Russell
Associate
Mark A. Rutkowski
Associate Vice President, Madison Office Manager
Evan Saint-Pierre
Geotechnical Staff
Morgan Sanger
Geotechnical Staff
Michael Santi
Engineer
Hisham Sarieddine
Vice President
Genevieve Sasaki
Senior Engineer
Joseph Sawdey
Senior Geologist and Hydrogeologist
Russ Schwab
Vice President, Chief Technology Officer
Jaimy Schwarber
Geotechnical Staff
Erik Scott
Senior Geologist
Stephen Semmens
Geotechnical Staff
Briana Shaffer
Laboratory Manger, GIS Specialist
Ali Shahbazian
Associate
Bradley Sheffield
Associate
Sam Sideras
Associate
Seth Sonnier
Senior Geologist
Cody Sorensen
Senior Geologist
Jacob Sowers
Laboratory Manager, Geotechnical Staff
Kat Spence
Geotechnical Staff
Tyler Stephens
Vice President
Justin Stoffel
Associate
Lucas Strom
Senior Engineer
Meg Strong
Vice President
Amy Summe
Associate
Kevin Szubrych
Engineer
Andrew Tangsombatvisit
Geotechnical Staff
Jessa Tibbetts
Environmental Scientist
R. Kevin Tillis
Vice President
Agnes Tirao
Senior Associate
Travis Thomsen
Associate
Zach Thon
Geoscientist
Brian Trott
Senior Engineer
Edward Vaccaro
Geotechnical Staff
David Vara
Vice President, Denver Office Manager
Philip Wallbridge
Senior Engineer
Katie Walter
Vice President
James Walters
Associate
David Ward
Vice President
Ben Warren
Engineer
Katra Wedeking
Senior Geologist
Alison Wharry
Geology Staff
Rex Whistler
Senior Engineer
Stephanie Wanderer
Senior Geologist
Mark Wieners
Senior Geologist
Rachel Willis
Environmental Scientist
Clinton Wilson
Senior Associate
Sean Wilson
Senior Engineering Geologist
Klaus Winkler
Senior Principal Engineering Geologist
Kevin Wood
Senior Engineer
Adam Wyborny
Environmental Engineer
Paul Van Horne
Associate
Ryan Van Leuven
Associate
Brian Vasterling
Geologist
Mia Verdolin
Geotechnical Staff
Brian Volmer
Senior Engineer
Symon Ybarra
Equipment Manager/Field Technician
Callan Yu
Associate
Carolina Zamora
Geology Staff
Walter Zitz
Senior Engineer
James Zschau
Senior Geologist
