Acknowledgments
The members of the Interstate Technology & Regulatory Council (ITRC) PFAS Team wish to acknowledge and thank the individuals, organizations, and agencies that contributed to this online document (from 2017 through 2025) that includes the PFAS Technical and Regulatory Guidance Document, the 2025 Priority Topics, Sorption-based Treatment Technologies Guidance, PFAS Fact Sheets, training resources, and external tables of data and information prepared by the ITRC PFAS Team.
The PFAS Team was led by: Bob Mueller, New Jersey Department of Environmental Protection (2017 – 2021); Ginny Yingling, Minnesota Department of Health (2017 – 2020); Kate Emma Schlosser, New Hampshire Department of Environmental Services (2020 – 2022); Sandra Goodrow, New Jersey Department of Environmental Protection (2020 – 2023); Kristi Herzer, Vermont Department of Environmental Conservation (2022 – 2025); Jeff Wenzel, Missouri Department of Health and Senior Services (2024 – 2025); and Ted Campbell, North Carolina Department of Environmental Quality (2024 – 2025).
The team leaders were assisted by Program Advisors: Lesley Hay Wilson and Jim Rocco of Sage Risk Solutions LLC. Josh Criss of GDIT provided video support for the training video modules. Tadbir Singh, ITRC/ECOS Project Associate; Evan Madden, ITRC Project Manager; Marguerite Bennett, ITRC Project Associate; and Sabrina Heivilin, ITRC Project Manager provided support to the team. Bobbilynne Koepke and Susan Cummins of Environmental Works, Inc. provided support for the collaborative PFAS and Vapor Intrusion Teams’ Fact Sheet.
During the development and updating of the fact sheets, technical and regulatory guidance document, priority topics, sorption-based treatment technologies guidance, external tables, and training resources the team received many comments and reviews from experts across U.S. EPA, U.S. DoD, U.S. DOE, state agencies, academic institutions, industry, and consulting. This input was invaluable to the development of these ITRC products. The team greatly appreciates those who offered advice, suggestions, reviews, and comments.
Specifically, the team wishes to thank and recognize the efforts and important contributions of the team members.
State and Local Government
John Abernathy
South Carolina Department of Health and Environmental Control
Stanley Aniagu
Texas Commission on Environmental Quality
Daniel Arthur
Alabama Department of Environmental Management
Heather Barbare
Colorado Springs Utilities
Sara Benovic
Arizona Department of Environmental Quality
Jeff Biggs
City of Tucson Water Department
Rachel Blomberg
Colorado Department of Public Health and Environment
Jennifer Borski
Wisconsin Department of Natural Resources
Robyne Bridgman
Virginia Dept. of Environmental Quality
Christine P. Brown
California Department of Toxic Substances Control
Robert Burgess
Alaska Department of Environmental Conservation
Sandeep Burman
Minnesota Pollution Control Agency
Stephen Busch
Michigan Department of Environment, Great Lakes, and Energy
Bonnie Buthker
Ohio EPA/ASTSWMO
Sandra Caldwell
Washington Department of Ecology
Ted Campbell
North Carolina Department of Environmental Quality
Amy Cannon
Delaware Natural Resources and Environmental Control
Daniela Castañeda
Denver Water
Jill Clark
Georgia Environmental Protection Division
Jessika Cohen
Oregon Department of Environmental Quality
Hoa Dao
Pennsylvania Department of Environmental Protection
Brian Davis
Minnesota Pollution Control Agency
Robert Delaney
Michigan Department of Environmental Quality
Iris Deng
Washington State Department of Ecology
Amy Doherty
New Hampshire Department of Environmental Services
Shayne Doone
Illinois Environmental Protection Agency
Mark Elliott
Minnesota Pollution Control Agency
Emmanuel Eluno
South Carolina Department of Environmental Services
Michael Eruaga
Delaware Natural Resources and Environmental Control
Chris Evans
Maine Department of Environmental Protection
Cheryl Fields
Connecticut Department of Public Health
Kimberly Gettmann
California USEPA/Department of Toxic Substances Control
Paul Giannoukos
Delaware Natural Resources and Environmental Control
Michael Ginsbach
Minnesota Pollution Control Agency
Helen Goeden
Minnesota Department of Health
Sandra Goodrow
New Jersey Department of Environmental Protection
Stephanie Gordon
Delaware Natural Resources and Environmental Control
Rick Greiner
New Mexico Environment Department
Valerie Hanley
California Department of Toxic Substances Control
Nazmul Haque
Washington, D.C. Department of Energy and Environment
Kristi Herzer
Vermont Department of Environmental Conservation
Stephanie Houston
Virginia Department of Environmental Quality
Fabio Iwashita
New York Department of Environmental Conservation
Samuel Iwenofu
Washington State Department of Ecology
Ricardo Jaimes
DOEE Government of the District of Columbia
Richard Jack
King County Water and Land Resources
Walsta Jean-Baptiste
Florida Department of Environmental Protection
Yujie Jin
California Department of Toxic Substances Engineering
Andy Jochems
New Mexico Environment Department
Jason Johnson
New York Department of Environmental Conservation
Mimi (Melanie) Johnson
Wisconsin Department of Natural Resources
Michael Jury
Michigan Department of Environment, Great Lakes, and Energy
Julie Kadrie
Minnesota Department of Health
Sesha Kallakuri
Michigan Department of Health and Human Services
Christopher Kelley
Island County Washington Public Health
Brandon Kernen
New Hampshire Department of Environmental Services
Annalisa Kihara
California State Water Resources Control Board
Anne Knapp
Washington State Department of Ecology
Lisa Kowalczyk
Arizona Department of Environmental Quality
Gary Krueger
Minnesota Pollution Control Agency
Meghan Lally
Connecticut Department of Energy and Environmental Protection
Andrew Leavitt
California Department of Toxic Substances Control
Gladys Liehr
Florida Department of Health
Gail Lipfert
Maine Department of Environmental Protection
Tim Lockrem
Minnesota Pollution Control Agency
Kevin Lund
Michigan Department of Environmental Quality
Ron MacGillivray
Delaware River Basin Commission
Evan Madden
ITRC/ECOS
Kerri Malinowski
Maine Department of Environmental Protection
Craig Manahan
Washington State Department of Ecology
Madeline Manfre Sarno
Colorado Department of Public Health and Environment
Vivek Mathrani
California Department of Toxic Substances Control
Lawrence D. Matson
Delaware Natural Resources and Environmental Control
Melissa May
Missouri Department of Health and Senior Services
Susan McKinley
Indiana Department of Environmental Management
Justin Meredith
Tennessee Department of Environment and Conservation- Division of Remediation
Sandra Mort
North Carolina Department of Environmental Quality
Rich Murray
Colorado Department of Public Health and Environment
Matt Narter
Arizona Department of Environmental Quality
Steve Nelson
City of Austin, Texas
Cherrie Nelson
Wyoming Department of Environmental Quality
Mary Helen Niemann
Texas RR Commission
Frannie Nilsen
North Carolina Department of Environmental Quality
Kimberly Nimmer
Orange Water and Sewer Authority
Marjorie Norman
City of San Antonio
Christine Osborne
Utah Department of Environmental Quality
Sarah Page
Utah Department of Environmental Quality
Sara Pearson
Michigan Department of Environmental Quality
Michael Penzone
Delaware Natural Resources and Environmental Control
Kerry Pflugh
New Jersey Conference of Mayors
Mallory Pinkowski
Delaware Natural Resources and Environmental Control
Shannon Pociu
Connecticut Department of Energy & Environmental Protection
Ron Poustchi
New Jersey Department of Environmental Protection
Angela Preimesberger
Minnesota Pollution Control Agency
Matthew Revel
Alabama Department of Environmental Management
Charles Reyes
ITRC/ECOS
Amirhossein Rezaei Adaryani
California State Water Resources Control Board
Kristy Richardson
Colorado Department of Public Health and Environment
Louise Roy
Maine Department of Environmental Protection
Patrik Sartz
Alaska Dept of Environmental Conservation
Paul Schleusener
Michigan Department of Environment, Great Lakes, and Energy
Kate Emma Schlosser
New Hampshire Department of Environmental Services
Chuck Schwer
Vermont Department of Environmental Conservation
Shukla Roy-Semmen
California Department of Toxic Substances Control
Michael Sexton
Virginia Department of Environmental Quality
Monica Sheets
Colorado Department of Public Health and Environment
Kathryn Shepard Morris
Montana Department of Environmental Quality
Tom Simones
Maine Center for Disease Control & Prevention
Cheryl Sinclair
Pennsylvania Department of Environmental Protection
Tadbir Singh
ITRC/ECOS
Justin Skinner
Illinois Environmental Protection Agency
Leah Smith
Florida Department of Environmental Protection
Matt Smith
Orange County Sanitation District
Sandra Snyder
South Carolina Department of Environmental Services
Richard Spiese
Vermont Waste Management Division
Jennifer Stackhouse
California Department of Toxic Substances Control
Brie Sterling
Pennsylvania Department of Environmental Protection
Kara Steward
Washington State Department of Ecology
Christina Stringer
New England Interstate Water Pollution Control Commission
Brock Tabor
Alaska Department of Environmental Conservation
Joy Taylor Morgan
Michigan Department of Environment, Great Lakes, and Energy
Debra Thoma
South Carolina Department of Environmental Services
Shawn Tisdell
Alaska Department of Environmental Conservation
Anju Toolaram
New York State Department of Health
Tom Trainor
Wisconsin Department of Natural Resources
Tina Ures
California State Water Resources Control Board
Lanita Walker
City of Tallahassee
Thomas Wallace
Mississippi Department of Environmental Quality
Jamie Wallerstedt
Minnesota Pollution Control Agency
Li Wang
California Department of Toxic Substances Control
Edward Watson
North Carolina Department of Environmental Quality
Jeff Wenzel
Missouri Department of Health and Senior Services
Tracie White
Colorado Department of Public Health & Environment
Matthew Williams
Michigan Department of Environment, Great Lakes, and Energy
Dicle Yardimci
California Department of Toxic Substances Control
Ken Zarker
Washington State Department of Ecology Pollution Prevention & Regulatory Assistance Section
Federal Government
Hunter Anderson
US DOD AFCEC
Nicolette Andrzejczyk
USDOD NAVFAC
Jennifer Apell
US Army Corps of Engineers
Timothy Appleman
US DOD NAVFAC EXW
David Asiello
US DOD Office of the Assistant Secretary of Defense (Sustainment)
Caroline Baier-Anderson
USEPA/OLEM/FFRRO
Paul Beam
US DOE HQ EM 4.12, Groundwater and Soil Remediation
Laura Carlson
USEPA
Sandip Chattopadhyay
USEPA/ORD
Laura Cook
USDOD NAVFAC
Mary Cooke
USEPA/FFRRO
Jed Costanza
USEPA OSTRI/TIFSD
James Cummings
USEPA
Anthony Danko
US DOD NAVFAC EXWC
Ramona Darlington Iery
US DOD NAVFAC EXWC
Lucila Dunnington
USEPA
Jeffrey Dvorak
US Army Corps of Engineers
Emily Fabricatore
US DOE Environmental Management
Mike Felix
USACE
Linda Fiedler
USEPA OSRTI
Melissa Forrest
US DOD NMCPHC
Elisabeth Freed
USEPA
Christopher Griggs
US Army Engineer Research and Development Center
Pamela Hamlett
US Air Force
Carl Harms
USACE
Paul Hatzinger
SERDP-ESTCP
Levi Haupert
USEPA
Hannah Holsinger
USEPA
Thomas Imbrigiotta
USGS (retired)
Christopher Impellitteri
USEPA ORD
David Katz
USEPA Atlantic Ecology Division
Patsy Kerr
US DOD NMCPHC
Kameron King
SERDP/ESTCP
John Kornuc
US DOD NAVFAC EXWC
Andrea Lehn
US DOD SAF/IE
Kendra Leibman
US DOD Navy
David Liu
NASA
Cornell Long
US Air Force
Michelle Lordemann
US Army Corps of Engineers
Yvette Lowney
SERDP-ESTCP
Virginia Makale
US DOD Naval Facilities Engineering Command, Southwest
Andy Martin
US Army Engineer Research and Development Center
Lisa Matthews
USEPA Office of Research and Development
Alexandra Melnyk
USDOE
Christopher Mew
Los Alamos National Laboratory
Anita Meyer
US Army Corps of Engineers
Beth Moore
US DOE EM-4.31, Office of Regulatory Compliance
Deborah Morefield
US DOD Office of the Deputy Assistant Secretary of Defense (Environment)
Gary Newhart
USEPA-ERT
T. Nicole Nieves
US Army Corps of Engineers
Bonnie Packer
US DOD ARNG
Cara Patton
SERDP-ESTCP
Ron Pinkoski
US Coast Guard
Jessica Reiner
NIST
Ann Richard
USEPA
Denise Rivers
USACE
Anna Robuck
USEPA
Amy Rosenstein
US Army Corps of Engineers
Mark Rothas
US Army Corps of Engineers
Andrea Sansom
US Army Corps of Engineers
Avanti Shirke
USEPA
Samreen Siddiqui
California Department of Food and Agriculture
James Smith
US DOD NMCPHC
Arthur Snow
US Navy
Sharon Stone
US DOD AFCEC/CZO
Hans Stroo
SERDP-ESTCP (retired)
James Tarr
US DOD NAVFAC
Wendy Thomi
USEPA Office of Land and Emergency Management
Hilary Thornton
USEPA R4 Superfund
Janice Willey
US DOD NAVSEA
Christopher Zevitas
US Department of Transportation
John Zimmerman
USEPA
Emeritus, Public and Tribal Stakeholders
Richard Aho
retired
Doris Cellarius
Sierra Club
Edward (Ted) Emmett
University of Pennsylvania
David Hofmann
Cherokee Nation
Jeffrey Kuhn
Kuhn Environmental
Alexander MacDonald
SanMan Designs
Martha Maier
Montrose Environmental Group (retired)
Gloria Post
New Jersey Department of Environmental Protection (retired)
Divinia Ries
Emeritus
Lenny Siegel
Center for Public Environmental Oversight
Peter Strauss
PM Strauss & Associates
Eric Uram
Sierra Club
Lesa Zimnawoda
Cherokee Federal
Academia
Steven Becker
University of Alaska Fairbanks
David Bond
Bennington College
Michelle Crimi
Clarkson University
Chadi El Mohtar
The University of Texas at Austin
Jennifer Field
Oregon State University
Jennifer Guelfo
Texas Tech University
Megan Hart
University of Missouri Kansas City
Christopher Higgins
Colorado School of Mines
Ali Ling
University of St. Thomas
Eric Nuttall
University of New Mexico
Christopher Olivares
University of California – Irvine
Mitchell Olson
Colorado State University
Matt Reeves
Western Michigan Univ.
Timothy Schroeder
Bennington College
Hooman Vatankhah
Florida International University
Rick Wice
Carnegie Mellon University
Mark Widdowson
Virginia Tech
Paul Yaroschak
Water & Environmental Technology Center, Temple University
Industry Affiliates
Rafat Abbasi
Geosyntec
Stewart Abrams
Langan Engineering & Environmental Services
David Adamson
GSI Environmental Inc.
Jennifer Adler
Haley & Aldrich
Hannah Albertus-Benham
WSP
Ryan Andersen
LANGAN
Janet Anderson
GSI Environmental Inc.
Richard Anthony
Weston Solutions
Lydia Auner
TRC
Ankit Balaria
Arcadis
Chuck Balkenbusch
Burns and McDonnell
Francisco Barajas Rodriguez
AECOM
Matthew Barvenik
GZA GeoEnvironmental, Inc.
Saamih Bashir
WSP
Cherri Baysinger
Cymbella Consulting
Buddy Bealer
Shell
Melissa Beauchemin
Kennedy/Jenks Consultants
Lila Beckley
GSI Environmental Inc.
Mark Benotti
NewFields
John Berry
ECT2
Amanda Bess
Chevron
Jeremy Birnstingl
Regenesis
Birgitta Beuthe
BP
Michael Bock
The Intelligence Group, LLC
Dorin Bogdan
AECOM
Francis Boodoo
Purolite
Andrew Borden
AECOM
Jenalle Brewer
Calgon Carbon Corporation
Steven Brown
The Dow Chemical Company
Cristin Bruce
Shell
Dan Bryant
Woodard & Curran
Bob Buck
Chemours
Karla Buechler
Enthalpy Analytical Laboratory
Scott Burkey
Shell
Stuart Cagen
Shell
Barbara Campany
GHD
Paul Caprio
EA Engineering
Grant Carey
Porewater Solutions
David Carlson
Enterprise Environmental Advisors
Corey Carpenter
EKI Environment & Water, Inc.
Gwendoline Caviness
Exponent
Bharat Chandramouli
SGS North America
Hyunshik Chang
AECOM
Dora Chiang
Jacobs
Sabina Chowdhury
BAH
Ali Ciblak
Geosyntec Consultants
Virginia Clauser
ddms
Steve Clough
Haley & Aldrich (retired)
Nancy Collins
Clean Harbors
John Collins
AquaBlok
Jason Conder
Geosyntec Consultants
Pete Conwell
Shell
Eliot Cooper
Cascade
Jeff Cornell
Tehama LLC
Thomas Cortina
Cortina Environmental Consulting
Craig Cox
Cox-Colvin Associates
Rick Cramer
Burns & McDonnell Engineering Company, Inc.
Kavitha Dasu
Battelle
Rula Deeb
Geosyntec Consultants
Todd DeJournett
Geosyntec
Elizabeth Denly
TRC
Nicholas DeRose
Langan Engineering & Environmental Services
Richard Desrosiers
GZA GeoEnvironmental, Inc.
George DeVaull
Shell
Annielu DeWitt
Clean Harbors
Rebecca Dickman
CETCO
Zachary Dickson
Dickson & Associates
Erica DiFilippo
S.S. Papadopulos & Associates, Inc.
William DiGuiseppi
Jacobs
Dina Drennan
BEM Systems, Inc.
Anthony Druin
Weston Solutions, Inc.
Thomas Dunder
TRC
David Dunlap
Clean Earth
Scott Dwyer
Kleinfelder
Keith Edmonds
Trihydro
Kelsi Evans
Parrott Environmental Consulting
Richard Evans
Groundwater & Environmental Services, Inc.
David Favero
RACER Properties LLC
Jim Feild
WSP
Tony Finding
BSTI
Stephanie Fiorenza
Arcadis
Cullen Flanders
Montrose Environmental
Eric Forrester
Calgon Carbon Corporation
Cheryl Fountain
Tetra Tech
Jamie Fox
SGS North America
Theresa Gabris
Geo-Technology Associates
Justin Gal
Amec Foster Wheeler
Bill Garrison
Clean Waters, LLC
Jessica Gattenby
Arcadis
Stephen Geiger
ERM
Bob Gensemer
GEI Consultants, Inc.
Rick Gillespie
Revive Environmental
David Glaser
Anchor QEA, LLC
Arianne Godwin
Pinyon Environmental, Inc
Jessica Goin
Anchor QEA, LLC
Marat Goldenberg
Burns & McDonnell Engineering Company, Inc.
Sean Gormley
WSP
Heather Gosack
Haley & Aldrich
Scott Grieco
Jacobs
Daniel Griffiths
Parsons Corporation
Karen Gruebel
EKI Environment & Water
Chris Gurr
CDM Smith
Adam Hackenberg
Langan Engineering & Environmental Services
Nathan Hagelin
WSP
Jeffrey Hale
Kleinfelder
Linda Hall
DBA Linda C. Hall, PhD
Kris Hallinger
ERM
Ruth Hammervold
Brown and Caldwell
Melissa Harclerode
CDM Smith
Paul Hare
OBG
Andy Harris
Calgon Carbon Corporation
Ivy Harvey
EA Engineering, Science, Technology, Inc.
Elisabeth Hawley
Geosyntec
Ed Hawthorne
Shell
Ziqi He
HSW Engineering
Jennifer Heath
Heath Toxicology
Nanda Hermes
ERM
Rebecca Higgins
AECOM
Jason Hnatko
Allonnia
Jeffrey Holden
GEI Consultants, Inc.
Rebecca Hollender
TRC
Chase Holton
GSI Environmental Inc.
Christopher Hook
Tetra Tech, Inc.
Chuck Hornaday
Vadose Remediation Technologies
Peggy Horst
W.L. Gore & Associates, Inc.
Tamara House-Knight
GHD
Erika Houtz
ect2
Brian Hoye
Burns & McDonnell Engineering Company, Inc.
Jane Huber
Metiri Group
Mike Hudgins
Terracon
Ryan Hultgren
Kennedy/Jenks
Gary Hunt
TRC
Craig Hutchings
Integral Consulting Inc.
Courtney Hutchinson
Terracon
Antone Jain
EKI Environment & Water
Matthew Jenny
GSI Environmental Inc.
Thomas M. Johnson
Thomas Johnson Associates
Daniel Jones
AECOM
Purshotam Juriasingani
Tetra Tech, Inc.
Ellen Kaastrup
Kaastrup Consulting, LLC
Lisa Kammer
Weston Solutions, Inc.
Saroj Kandel
Civil & Environmental Consultants, Inc.
William Kerfoot
Kerfoot Technologies, Inc.
Trent Key
ExxonMobil
Eric Klinker
DuPont
Mat Knutson
Terracon
Stephen Koenigsberg
Montrose Environmental Group
Stephen Korzeniowski
BeachEdge Consulting
Ronald Kotun
Tetra Tech
Matt Kraus
Tetra Tech
Deepti Krisnan Nair
Battelle
Yasemin Kunukcu
WSP
Matthew Lahvis
Shell
Johnsie Lang
Arcadis
Heather Lanza
CDM Smith
Laurie LaPat-Polasko
Ramboll Environ
Fiona Laramay
Leidos
Sarah LaRoe
Anchor QEA, LLC
Steven LaRosa
Weston & Sampson
Maureen Leahy
WSP
Trent Lee
ddms
Nigel Lewis
HSW Engineering, Inc.
Hui Li
EKI Environmental
Shangtao Liang
AECOM
Jerry Lisiecki
Clean Harbors Environmental Services
Lori Littrell
bp
Tina Liu
Geosyntec Consultants
Anne Lockard
Heritage Environmental Services
Linda Logan
Terraphase Engineering, Inc.
Kevin Long
Terraphase Engineering, Inc.
Chris Lutes
Jacobs
Heather Lutz
Geosyntec Consultants
Tamzen Macbeth
CDM Smith
Matt Machusick
Leidos
Sriram Madabhushi
AECOM
Brian Mader
3M Company
Andrew Madison
WSP
Maria Magilton
EA Engineering, Science and Technology
Stefano Marconetto
WSP
Frank Marine
Texas Molecular
Robert Martin
Clean Earth
Matt Matteson
WSP
John Matthis
Calgon Carbon Corporation
Chris McCarthy
Jacobs
Katrina McCullough
GHD
Kyle McDonald
Trihydro
Lisa McIntosh
Terraphase Engineering
Angus McGrath
Stantec
Patricia McIsaac
Eurofins
Jason McNew
EA Engineering, Science & Technology
Daniel Medina
AECOM
Toni Mehraban
Brice Engineering
Dogus Meric
Geosyntec Consultants
Whitlee Migl
Clean Harbors
Michael Mobile
GZA GeoEnvironmental, Inc.
Mahsa Modiri
EA Engineering, Science, & Technology
Joe Montello
Republic Services, Inc.
Rebecca Mora
AECOM
Austin Morgan
BEM Systems, Inc.
Teri Myers
CDM Smith
Jonathan Naile
Shell
Peter Nangeroni
Woodard & Curran
Charles Neslund
Eurofins
Hilary Nevis
Amec Foster Wheeler
John Newsted
OBG Company
Glenn Nicholas Iosue
CDM Smith
Eric Nichols
Substrata LLC
Mark Nielsen
Ramboll
Ashley Nifong
GEL Labs
Harry O’Neill
Beacon Environmental
Jeff Orient
Tetra Tech
Cameron Orth
Battelle
Marek Ostrowski
Brown and Caldwell
Fernanda Paes Wilson
Fishbeck
Kanan Patel-Coleman
Burns & McDonnell Engineering Company, Inc.
Fay Pazoki
Jacobs
Stuart Pearson
WSP
Michael Penzo
Penzo Consulting
Stephen Pepper
Montrose Environmental Group
Jonathan Petali
Battelle
Ioana Petrisor
EnSafe
Jenny Phillips
TRC
Nasim Pica
WSP
Heidi Pickard
Ramboll
Jeffrey Pintenich
Brown and Caldwell
Les Porterfield
TEA, Inc.
John Powell
HydroGeoLogic, Inc.
Cathelyne Powers
Trihydro
Fred Price
APMI
Emily Pulcher
Burns and McDonnell
Bob Pullano
GEL Laboratories
Andrew Punsoni
Allonnia
Joseph Quinnan
Arcadis
LeeAnn Racz
ToxStrategies
Narayan Raghupathi
WSP
Francis Ramacciotti
GHD
Craig Redfern
APTIM
Catherine Regan
Haley & Aldrich
Stephen Rembish
Parsons Corporation
Patricia Reyes
Clean Harbors
Cynthia Rhode
GHD
Will Rice
Montrose Environmental Group
David Rigg
Arcadis
William Rish
ToxStrategies, Inc.
Christopher Ritchie
Ramboll
Harrison Roakes
Sanborn, Head & Associates, Inc.
Angela Rodriguez
Calgon Carbon Corporation
Nicholas Rogers
CDM Smith
Brian Roh
Burns & McDonnell Engineering Company, Inc.
Christopher Ross
Engineering Analytics
Nancy Rothman
New Environmental Horizons, Inc.
Aaron Rydecki
WSP
Samantha Saalfield
EA Engineering
Kevin Salls
Nevada Division of Environmental Protection
Andy Safulko
Brown and Caldwell
Mimi Sarkar
Arcadis
Riz Sarmiento
WSP
John Santacroce
Parsons Corporation
Nicholas Santella
BSTI
Christopher Schaupp
Neptune & Company
Erin Schimmel
Burns and McDonnell
Dan Schneider
Terracon
Ron Schoff
Phoenix Pure Holdings LLC
Nadja Scholl
Engineering Analytics
Barrie Selcoe
Jacobs
Joe Seracuse
Brown and Caldwell
Mahsa Shayan
Geosyntec Consultants
Clifford Shierk
Burns and McDonnell
Pradeep Shukla
SynergenMet
Michael Sieczkowski
JRW Bioremediation
David Silbaugh
Silbaugh Hydrogeological Svcs
Cannon Silver
CDM Smith
Lizanne Simmons
Kleinfelder
Brent Smith
Civil & Environmental Consultants
Zachary Smith
Verdantas LLC
Mike Solt
Langan Engineering & Environmental Services
Stephen Sommerville
Eurofins
Lauren Soos
TRC Group
Skyler Sorsby
WSP
Kyle Spears
Aestus
Joseph Sposato
Pinyon Environmental, Inc.
Kendall St. Ange
TRC
Brent Stafford
Shell
Jamie Suski
EA Engineering
Ward Swanson
Barr Engineering Co.
Bob Symons
Eurofins Environment Testing, Australia
Nick Talocco
Geosyntec Consultants
Sagar Thakali
AECOM
Jennifer Thomas
Leidos
Ryan Thomas
Parsons Corporation
Shalene Thomas
Battelle Memorial Institute
Claire Thomassen
BBJ Group
Jonathan Thorn
Eurofins
Roy Thun
GHD
Derek Tomlinson
GEI Consultants, Inc.
Tifany Torralba
Arcadis
Adam Tressler
ERM
Grant Trigger
RACER Properties LLC
Laura Trozzolo
TRC
David Tsao
bp
Edward (Ted) Tyler
Stantec
Brad Varhol
EON Products
Usha Vedagiri
WSP
Ann Verwiel
ToxStrategies, Inc.
Bryan Vining
Montrose Environmental Group
Chris Voci
Terraphase Engineering, Inc.
Lisa Voyce
HDR
Claudia Walecka-Hutchison
Dow, Inc.
Ying Wang
WSP
Artie Wickham
BEM Systems, Inc.
Michael Wilken
The Dow Chemical Company
Jason Wilkinson
Ramboll Environ
Anna Willet
LANGAN
Scott Wilson
Regenesis
David Woodward
AMEC Foster Wheeler
Sandra Yi-Fuller
Shell
Rachel Zajac-Fay
Jacobs
Michael Zelenka
ExxonMobil
Stephen Zemba
Sanborn, Head & Associates, Inc.
Jennifer Zorinsky
AECOM
Barry Zvibleman
Onion Enterprises PFOS-PFOA Treatment
International Team Members
Frank Berger
AECOM
David Burns
Sustain 450 pty
Sarah Gewurtz
Environment and Climate Change Canada
Andrew Mitchell
Department of Defence (Australia)
Niall Ramsden
LASTFIRE
–
Updated January 2026.
