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Agricultural Stewardship
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Agrochemical Fate & Exposure Modeling
Hydrology and Water Quality Modeling
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Urban Hydrologic Systems
Climate Change Resilience Modeling
Environmental Model Development / Customization
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Hydrology and Water Quality Modeling
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Who We Are
Our Team
Our Team
Leadership
John Hanzas
President / Agrochemical Fate & Exposure Service Leader / Senior Geoscientist
Michael Winchell
Vice President / Environmental Systems Modeling Service Leader / Senior Environmental Modeler
Daniel Voisin
Senior Geologist / Director of Environmental Assessment and Remediation Services
Dave Braun
Water Resources Management Service Leader / Senior Water Resources Scientist
Kim Watson, RQAP-GLP
Quality Assurance Manager / Health & Safety Officer
Barbara Patterson
Geospatial and Data Solutions Service Lead / Senior Database Developer
Staff
David Abrahamson, PE, PMP
Senior Environmental Engineer
Gabe Bolin, PE
Senior Water Resources Engineer
Ben Brayden
Project Scientist / Director of AgChem Business Development
Les Carver
Senior Hydrogeologist
Nicholas Floersch
Senior Web / GIS Application Specialist
Alan Hammersmith
Senior GIS Web Applications Developer
Gaylen Jones, Ph.D.
Senior Scientist
Peter Lazorchak, PE, LEED AP
Senior Water Resources Engineer
Amy Macrellis
Senior Water Quality Specialist
Hendrik Rathjens, Ph.D.
Senior Environmental Modeler
Leif Richardson, Ph.D.
Senior Ecologist
Jody Stryker, Ph.D.
Senior Environmental Modeler
Brent Toth
Senior Scientist / Director of AgChem Operations
Meghan Arpino
Project Hydrologist
Roger Branon Rodriguez
UX Designer
Daniel Brese
Staff Scientist
Sebastián Castro-Tanzi, Ph.D.
Environmental Modeler
Heather Cox
Staff GIS Ecologist
Carleigh Rixon
Marketing Director
Polly Crocker
Senior Water QualityScientist
Dan Curran
Staff Geologist
Jonnie Dunne
Environmental Modeler
Christine Gingras, PE
Water Resources Engineer
Evan Johnson
Marketing Associate/Content Manager
Hisashi "Hisa" Kominami
Staff Scientist
John Landis
Director of Computer Operations
Rachel Lightfoot
Project Agronomist
Katrina Mattice, PE
Project Engineer
Branden Martin, PE
Water Resources Engineer
Bettina Miguez
Environmental Modeler
Rebecca Mitchell
Staff Scientist
Samantha Newton
Accountant
Joanne Perry
Human Resources / Office Administrator
Marco Propato, Ph.D.
Environmental Modeler
Laura Rajnak
Staff Scientist
Aaron Rice
Staff Scientist
Warren Rich
Project GIS Specialist
Lee Rosberg
Project Geologist
Kate Salvatori
Financial Controller
Laura Sisco
Staff Scientist/Technical Writer
Michael Smith
Senior Hydrologist
Katie Torchia
Accounting/Administrative Assistant
