Personnel
 
Personnel
Principals  

Thomas E. Fraser, MS
President

Michael N. Josselyn, PhD, PWS
Chairman of the Board

Philip J. Greer, MA
Senior Plant Ecologist

George Salvaggio, MS, MLA

Senior Landscape Architect

Timothy DeGraff, MS, PWS
Senior Vice President

Douglas Spicher, MA
Senior Wetland Ecologist

Sherry Maloney
Chief Financial Officer

Associate Principals  

Dana Riggs
Associate Principal Biologist

Geoff A. Smick
Associate Principal

Justin Semion
Associate Principal

Jeffrey S. Dreier, BS
Associate Principal, Senior Wildlife Biologist

Senior Associates  
Amanda McCarthy
Senior Associate, Plant/Wetland Ecologist
Geoff Reilly
Senior Associate, Environmental Planner
Associates  

Justin Derby
Mitigation Specialist

Leslie Lazarotti
Associate Biologist

Gabriel Olson
Senior Project Manager, Energy
Permitting & Development

Matt Osowski
Associate Biologist

Matt Richmond
Associate Biologist

Scientists  
Sean Avent
Aquatic Ecologist

Spencer Badet
Biologist

Mark Brandi
Landscape Architect

Dan Chase
Wildlife Biologist

Ingrid Morken
Landscape Architect

Rob Schell
Wildlife Biologist

Megan Stromberg
Landscape Architect

Chris Zumwalt
GIS Manager

Senior Technical Staff  
Kate Allan
Wildlife Biologist

Aaron Arthur
Biologist

Tyler Barns
Biologist

Sundaran Gillespie
GIS/CAD Technician

Michael Rochelle
GIS Technician

Morgan Trieger
Biologist

Liza Wozniak
Biologist

Jason Yakich
Wildlife Biologist

Technical Staff  

Reuben Brandt
Ecologist

Derek Chan
GIS/CAD Technician

Bianca Dailey
Biologist

Tanner Harris
Biologist

John Krapek
Biologist

Anthony J. Maguire, PWS
Biologist

Patricia Valcarcel
Biologist

Jayson Wood
Landscape Designer

Administrative Staff  

Liston Witherill
Director of Business Development

Andrea Kloh
Administrative Assistant

Perrine Portillo
Accountant/Administrative Professional

Joel Ruiz
Accountant

Laura Thiel
Accountant II

Jane Williamson
Contracts Manager




Personnel
Clients
Research & Presentations
Jobs
News
Contact


Rare Plant and Wildlife Species Studies
Environmental Impact Assessment
Wetland Delineation and Assessment
Permits and Regulation
Mitigation and Restoration
Landscape Architecture
Resource Mapping and Analysis
Expert Consultation and Witness Service
Distinguished Awards
Location Maps for Featured Projects Mitigation Banking


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