Our People

Alberto Pujol, P.E.

Senior Principal Engineer

Alex Mahrou

B.I. and Data Science Leader

Allan Blaske, P.G., CPG

Senior Project Geologist

Amber Ahles

Senior Project Manager

Andrea Shephard, Ph.D.

Senior Environmental Project Manager

Andrew Adinolfi, P.E.

Project Engineer

Andrew Baxter, P.G., P.E.

Senior Project Manager

Anne King

Senior Biologist

Anne Leifer, P.G., LSP

Senior Project Manager

Asher H. Peltz, P.E.

Senior Project Manager

Barry Giroux, P.E., LEP

Senior Project Manager

Barry Raus, P.G.

Senior Project Manager

Barry Scott, R.P.A.

Senior Archaeologist

Ben Lavon, P.E.

Vice President/Principal

Ben Sawa

Vice President and Director of Marketing

Bernhardt Hertlein

Senior Consultant

Bill Rettberg, P.E.

Vice President / Senior Principal Engineer

Bjorn Bjorkman

Senior Ecotoxicologist

Brad S. Belongia, P.E.

Structural Engineer

Brandon Fagan, P.G., LSP, QEP

Construction Management Practice Leader and Senior Consultant

Brandon Teel, P.E., R.G.

Senior Project Manager

Brian Majka

Senior Professional

Brian Mannino, P.E., CHMM

Project Manager

Brian T. Skelly

Environmental Scientist

Brooke Y. Bennett, PG, PMP

Senior Geologist

Bruce Coulombe, P.G.

Senior Project Manager/Senior Geologist

Cameron Davis, J.D.

Vice President

Cary Tisch

Design Leader/Senior Consultant

Catherine Johnson, P.G., LSP

Project Manager

Chad Masching, P.E.

Senior Civil/Water Resources Engineer, Central Region

Chad R. Conti, P.G., LEED AP

Project Manager / Senior Geologist

Charles Brink, LEP

Senior Professional

Charles Grant, P.E., S.E.

Senior Project Manager

Chia Tan, Ph.D., P.E., D.GE, F.ASCE

Senior Consultant

Chris Ferrari, P.E., CFM

Senior Professional

Chris Petersen, P.G., C.Hg.

Senior Hydrogeologist

Christopher Abraham, P.E.

Project Manager

Christopher Bradley, P.E.

Vice President

Christopher Dailey, P.E., LSRP, LEED AP

Civil Engineer/Construction Services Manager

Christopher R. Pray, P.E.

Project Manager

Christopher Slack, P.G., C.E.G.

Senior Engineering Geologist

Christopher Smith, P.E.

Senior Engineer

Cindy Davis

Senior Regulatory Specialist/Senior Project Manager

Cory A. Miyamoto, P.E.

Project Engineer

Craig Hall, P.E., G.E.

Geotechnical Engineer

Craig Wolf

Senior Aquatic Ecologist/Limnologist

Dale Lane, P.E.

Senior Consultant

Daniel Kopcow, P.E., P.M.P.

Senior Project Manager

Daniel Wanket, P.M.P.

Vice President and West Region Operations Manager

Darren D. Clark, P.E.

Project Manager

Darren Diehm, P.E.

Senior Professional

David Gutierrez, P.E., G.E.

Civil Engineer

David H. Russian, P.E.

Senior Environmental Consultant

David Miller, Ph.D., P.E.

Principal Consultant

David Terry, P.G., LEP

Principal, Vice President

David Watson, P.E.

Senior Professional

Denise Jurich, R.P.A.

Senior Archaeologist

Don Conklin

Senior Project Manager

Donald Schilling

Project Manager

Donghai Wang, Ph.D., P.E.

Vice President

Douglas Aghjayan, P.E.

Project Manager

Drew Sutton, A.I.C.P.

Senior Environmental Planner

Edward Bradshaw

Senior Practice Leader

Elizabeth Robinson, P.E., C.G., M.C.P.D.

Senior Civil Engineer, Hydrologist, Geologist, Land Planner

Enrico Rufini, P.E., P.G., C.E.G.

Senior Engineer

Eric Htain

Senior Environmental Scientist

Erica Bishop

Senior Water Resources Planner/Scientist

Errol Kitt

Vice President

Frances Schultz, P.G., LSRP

Senior Professional

Francine Dunn

Vice President, Senior Environmental Project Manager

Francis Leathers, P.E., F.ASCE, D.GE

Senior Consultant

George Meister

Project Manager

George Onorato, P.E.

Project Manager

Gillian Gregory, Ph.D., P.E.

Vice President and Senior Principal

Ginger G. Gillin

Vice President/Principal Environmental Scientist

Giovanni Bonita, Ph.D., P.E., P.G.

Senior Vice President

Graham Bradner, P.G., C.E.G., C.HG., P.M.P.

Senior Geologist

Harold “Ted” Dunsford Jr., Ph.D.

Engineering Scientist

Helen D. Robinson, P.E.

Senior Engineer / Branch Manager

Ileen Gladstone, P.E., LSP, LEED AP

Senior Vice President

Ira Beer, P.E.

Vice President and Senior Professional

J. Michael Hawthorne, P.G., REM, CAPM

Principal/Vice President/NAPL Practice Group Leader

Jacobus Prins, D.Eng., P.E.

Senior Information System Professional

James Ash, P.E., LSP

Senior Vice President

James Christensen, P.E.

Geotechnical Engineer

James Nickerson, P.E.

Vice President/Branch Manager

James Niehoff, P.E.

Senior Principal Engineer

Jamey Stynchula, P.G., LSRP

Senior Project Manager

Jamie Laubenthal

Senior Program Manager

Jamie Matus, C.P.G.

Vice President and Branch Manager

Jaren Hiller, P.E., LEED AP

Senior Water Resources Engineer

Jason R. Hughey

Ecologist

Jeanne LeFebvre, P.E.

Geotechnical Project Manager

Jeffrey Bal, P.E.

Vice President/Senior Project Manager

Jeffrey Brown, P.G., C.E.G.

Senior Geologist

Jeffrey Holden, P.E., LSP, LEP

Senior Project Manager/Engineer

Jeffrey Twitchell, P.E.

Senior Consulting Engineer

Jeffrey W. Bridgland

Ecologist / Project Manager

Jeremy Deuto, P.E., P.G.

Geotechnical Engineer/Project Manager

Jerry Peña Jr., P.E.

Senior Consultant

Jesús Gómez, Ph.D., P.E., DGEP

Vice President

Joanna Gulik

Senior Architect

John McGrane, P.E., CFM

Senior Professional

John P. Darmohray, CCM

Construction Project Manager

John Trast, P.E.

Senior Consultant

Jonathan Goetz, P.E.

Senior Civil Engineer

Jonathan Perse, P.G., LSRP

Senior Environmental Consultant

Joseph Engels, P.E.

Vice President/Principal

Joseph Roman, LSP

Senior Project Manager

Judy Eburn

Assistant Treasurer and Vice President of Finance

Julie Jennings Kale, SPHR, SHRM-SCP

Senior Vice President, People and Safety

Justin A. Dominguez, P.E.

Senior Geotechnical Engineer

Karen Stackpole

Senior Project Manager/Natural Resources Biologist

Kari A. Francis

Senior Professional

Kathleen Slimon, P.E.

Senior Engineer/Project Manager

Kathleen Stetser, P.G., LSRP

Vice President / Industrial Practice Leader

Katie Unke Ehrenberg

Senior Project Professional

Kelly Fitzgerald-Holland

Senior Wildlife Biologist & Regulatory Specialist

Kelly Rice, PWS

Senior Project Manager

Kelly Stanton

Controller

Kevin A. Roell, P.E., PMP

Project Engineer / Project Manager

Kevin McCarty

Senior Practice Lead

Kevin Yao, P.E., PMP

Senior Engineer

Krista A. Wolfe, P.E.

Environmental Engineer

Kwabena Asante, Ph.D., P.E.

Senior Hydrologist, Climate Science Lead

Kyle Bretl

Natural Resource Scientist

Larry Rodriguez

Vice President - Principal Water Resources Planner

Laura Conradi, P.E.

Senior Project Manager

Laura Schwanof, RLA

Senior Ecologist

Laurence Welch, P.E.

Environmental Engineer

Lee Bergstedt

Fisheries Ecologist

Lee Wooten, P.E.

Principal/Vice President

Leo Winternitz

Senior Project Manager – Water Resources & Environmental Management

Leonard Sansone, P.E., G.E.

Principal Geotechnical Engineer

Leslie Lombardo, P.E.

Project Manager

Lynn Hermansen

Senior Restoration Ecologist

Marc Rozman, P.E.

Project Manager

Mario Puerta, RA

Senior Architect

Mark Fortner, P.E., P.L.S.

Senior Consultant

Mark Freitas, P.E., G.E.

Senior Project Manager and Vice President

Mark Hargrove, P.E.

Senior Engineer

Mark Stoor, P.E.

Project Manager

Mark Vannieuwenhoven, P.E.

Project Manager

Mark W. Cowin, P.E.

Senior Consultant

Mark Westray

Senior Project Manager

Mark Williamson, P.E.

Vice President and Principal Engineer

Marvin Mai, P.E.

Project Manager / Civil Engineer

Marwan Salameh, Ph.D., P.E.

Senior Project Manager

Matthew Drewek, P.E., Ph.D.

Structural Engineer

Matthew Emrick, P.E.

Project Manager

Matthew Glunt, P.E.

Senior Geotechnical Engineer

Matthew O’Neil, P.E.

Project Engineer

Matthew Powers, P.E.

Senior Engineer/Project Manager

Melissa J. Felter, P.G.

Geologist

Micah Forbes, P.G.

Project Manager / Senior Hydrogeologist

Michael Carosotto, P.E., P.M.P.

Senior Consultant

Michael Carpenter, P.E.

Senior Project Engineer/Project Manager

Michael Conant, P.E.

Senior Engineer

Michael Cornelius, P.G.

Vice President and Principal Geologist

Michael DeBraske, P.E.

Senior Project Engineer

Michael Gatzow, P.E.

Senior Vice President/Central Region Operations Manager

Michael Gentner, P.E.

Senior Professional

Michael Muganga

Senior Structural Engineer

Michael P. Salerno, LSRP

Senior Consultant

Michael Paster, P.E.

Senior Project Manager

Michael T. Bracher, P.E.

Project Manager/Geotechnical Engineer

Michael T. Flynn

Project Manager

Michael W. Sabulis

Senior Project Manager

Michael Walker, P.E.

Vice President/Practice Leader

Michael Wheeler, P.E.

Senior Vice President/Senior Principal Engineer

Michael Yako, P.E.

Vice President

Michelle Ricker

Project Manager/Water Resources Specialist

Mike Mirmazaheri, P.E., C.F.M.

Senior Project Manager

Mutaz B. Mihyar, P.E.

Senior Engineer

Naser Bateni, P.E.

Senior Vice President

Nathan McNurlen, CHMM

Project Manager

Neil E. Carney, P.E.

Senior Professional

Nicholas Miller P.E., P.H.

Hydrology & Hydraulics Engineer

Nicholas Recchia, P.G.

Senior Hydrogeologist

Nicholas Tomera, JD

Senior Regulatory Specialist

Pablo Bruno, P.E., S.E.

Senior Structural Engineer

Patrick Chang, P.E., P.Eng.

Senior Professional

Patrick King, P.E., LSP

Vice President/East Operations Manager

Paul Blindauer

Vice President/Senior Consultant

Paul D. Drew, P.E., CFM

Hydrology & Hydraulics Engineer

Paul J. Eggers, P.E.

Civil Engineer / Engineering Division Manager

Paul Jansen

Senior Project Manager

Paul Killian, P.E.

Vice President/Senior Project Manager

Paul Landers, P.E.

Senior Project Manager

Paul M. Garvey

Senior Project Scientist

Paul V. Schatz, CPG

Geologist

Pericles Stivaros, Ph.D., P.E.

Vice President/Senior Consultant

Peter Ventin P. Eng.

Senior Program Manager / Vice President

Phil Dunn

Vice President, Senior Environmental Project Manager

Raymond Hart, P.E., G.E.

Vice President and Senior Consultant

Richard A. Rhone, P.E.

Executive Engineer

Richard C. Anderson, P.E.

Civil Engineer

Richard D. Meyerhoff, Ph.D.

Water Quality Specialist

Richard Fasciani

Lead Environmental Scientist

Richard Frappa, P.G.

Senior Consultant/Hydrogeologist

Richard Sanchez, P.E.

Senior Project Manager

Richard Shatz, P.G., C.E.G., C.H.g.

Principal Hydrogeologist

Richard Tobin, P.E.

Senior Project Manager

Robert Acker, P.E., LEED AP

Senior Consultant / Vice President

Robert Blauvelt, P.G., LEP, LSRP

Senior Consultant

Robert Cain

Senior Hydrogeologist

Robert Fill, CCM

Senior Construction Manager

Robert Gensemer, Ph.D.

Vice President & Senior Ecotoxicologist

Robin M. Stampbach, Ph.D., P.E.

Senior Project Manager

Rodney Fricke, P.G., C.E.G., C.H.G.

Senior Hydrogeologist

Roger Hathaway, P.E.

Vice President

Roger Putty, P.E., P.M.P.

Principal Water Resources Engineer

Ron Berry, P.E.

Senior Engineer

Ronald Bourne, P.E.

Vice President

Ronald Muller, P.E., P.M.P.

Senior Consultant

Ronald P. Palmieri, P.E.

President and Chief Executive Officer

Russell Titmuss, P.E., C.Eng MICE

Project Manager

Ryan Hoffman, P.G., LSP

Senior Project Manager

Ryan R. Holem

Senior Professional

Ryan S. Sheaffer, P.G.

Senior Geologist / Project Manager

Samuel Merrill, Ph.D.

Senior Practice Leader

Samuel Schaefer, P.E.

Senior Engineer

Sarah Norris, ISA Certified Arborist

Senior Regulatory Specialist, Biologist

Sarah Skigen-Caird

Ecology Division Manager/Senior Environmental Scientist

Saskia Oosting, P.G.

Project Manager

Satya Gala, Ph.D., P.E.

Senior Water Resources Engineer

Scott Dierks, P.E.

Project Manager

Scott J. Wallington

Chief Development Officer

Sean DiBartolo, P.E., LEED AP

Project Manager/Senior Geotechnical Engineer

Sequoia Howell

Talent Acquisition Leader

Sonja Atkins

Stephanie Hearn

Senior Water Quality Specialist/Permitting

Stephen W. Verigin, P.E., G.E.

Senior Vice President/West Region Manager

Steven Canton

Vice President/Senior Principal

Steven Elver, P.E., S.E.

Senior Consultant

Steven Hawkins, CSP

Corporate Health and Safety Officer

Steven Nicoson, P.E.

Project Manager

Steven Rice, CWB

Senior Professional

Stuart Kogge, PWS

Senior Wetland/Aquatic Biologist

Susan Boyle

Senior Consultant

Suzanne Pargee

Senior Professional

Thomas Kahl, P.E.

Chief Financial Officer

Thomas Keller, P.E., G.E.

Vice President/Senior Project Manager

Thomas Turpin, CPEA

Environmental Health & Safety Management Services, Practice Leader

Timothy Mattson

Senior Consultant

Todd Crampton, C.E.G.

Senior Engineering Geologist

Vance Howard

Senior Restoration Ecologist

Vasan Srinivasan, P.E.

Chief Operating Officer

William Bennett, P.E., G.E.

Vice President and Principal Engineer

William Butler, P.E.

Senior Geotechnical Engineer

William Walton, P.E., S.E., F.ASCE

Senior Vice President/Group Practice Leader/Geostructural Engineer

Yu Mei

Senior Programmer