U.S. EPA Contaminated Site Cleanup Information (CLU-IN)

U.S. Environmental Protection Agency
U.S. EPA Technology Innovation and Field Services Division

PFAS Roundtable

Sponsored by: Interstate Technology and Regulatory Council

This fourth PFAS Roundtable Session offers a unique opportunity to interact directly with experts from the ITRC PFAS Team from around the country on several topics: Human and Ecological Health Effects, Site Risk Assessment, Regulations, Risk Communication and Stakeholder Perspectives. Participants are requested to submit questions in advance of the event to be addressed during this extended Question and Answer discussion with expert panelists. The session is intended to be tailored to the specific needs of its participants, with the expectation that the participant will have a basic understanding of these topics prior to attending the Roundtable Session.

Per- and polyfluoroalkyl substances (PFAS) constitute a large family of fluorinated chemicals, exceeding several thousand in commercial use or the environment that vary widely in their chemical and physical properties. The persistence and mobility of some PFAS, combined with decades of widespread use in industrial processes, certain types of firefighting foams, and consumer products, have resulted in their being present in most environmental media at trace levels across the globe. PFAS have only recently come to the attention of investigators and the public in large part due to the fact that until the early 2000s analytical methods to detect low levels of PFAS in the environment were available only in a few select research institutions. It was not until the early 2010s that these methods to detect a limited number of PFAS became widely available and had detection limits in water low enough to be commensurate with levels of potential human health effects. Toxicological studies have raised concerns regarding the bioaccumulative nature and potential health concerns of some PFAS. As a result, our understanding of PFAS and the risks they may pose is rapidly evolving.

This Roundtable Session is based on the following ITRC-produced resources:

  • A series of fact sheets that synthesize key information about PFAS science. In particular for this webinar, the Regulations fact sheet, the Human and Ecological Health Effects and Risk Assessment fact sheet, the Risk Communication fact sheet, and the Stakeholder Perspectives fact sheet are available resources. The fact sheets were published in 2020.

  • A web-based technical and regulatory guidance document published by the ITRC PFAS Team in April 2020 that presents the necessary breadth and depth not given by the fact sheets, stakeholder points of view, technical challenges and uncertainties, risk communication strategies, and provides links to pertinent scientific literature. Limited small changes and some references were added to the document in September 2020 to address a range of quickly changing topics. In 2021, ITRC plans to update the technical and regulatory guidance document with new information and regulatory approaches that become available to address the evolving understanding of these contaminants. The document is supported by external files, including a regularly updated tabular summary of PFAS water and soil values used by various regulatory agencies across the United States.

  • Online training materials that convey the information presented in the technical and regulatory guidance document. Ten video training modules and brief introductory videos on the topics are posted on ITRC's YouTube channel. Additionally, the Team provided in-person training workshops to approximately 2,550 attendees through March 2020. In 2020 an additional 500 people attended virtual workshops. In 2021, the Team plans to provide additional online training resources. More information will be available on the ITRC Training page.

The target audience for this guidance and Roundtable Session is:
  • state and federal environmental staff working on PFAS-contaminated sites
  • Other project managers and decision makers
  • Stakeholders who are involved in community engagement

As a participant in this Roundtable Session you should learn more about:
  • PFAS Regulations
  • Human and Ecological Health Effects
  • Site Risk Assessment
  • Risk Communication
  • Stakeholder Perspectives

Participants are highly encouraged to review the Guidance Document ( - specifically Sections 7, 8, 9, 13 and 14), the Water and Soil Values and Basis for PFOA and PFOS Values tabular summaries (, and review the associated ITRC video training modules prior to attending the Roundtable Session:

Archives of past Roundtable Sessions and Q&A Digests are available on the ITRC PFAS Roundtable Training page.

Accessibility, Recording, and Content Disclaimer

Rehabilitation Act Notice for Reasonable Accommodation

It is EPA's policy to make reasonable accommodation to persons with disabilities wishing to participate in the agency's programs and activities, pursuant to the Rehabilitation Act of 1973, 29 U.S.C. 791. Any request for accommodation should be made to at or , preferably one week or more in advance of the webinar, so that EPA will have sufficient time to process the request. EPA would welcome specific recommendations from requestors specifying the nature or type of accommodation needed. Please note that CLU-IN provides both alternate phone call-in options and closed captioning for all webinars, and requests for these specific accommodations are not necessary.

Webinar Recording

By participating in this CLU-IN webinar, you automatically agree to authorize recording of audio and visual content presented during this live event and consent to subsequent use of this recording in the public domain by the U.S. Environmental Protection Agency. This recording may include questions, comments and poll responses provided by you during the live event in addition to your name, voice, image or likeness. This recording will be made available after the conclusion of the live event as part of the CLU-IN webinar archives, and will remain available indefinitely. If you do not wish to consent to the recording, please do not join the live event, and contact Jean Balent at 202-566-0832 or to discuss your concerns.

Content Disclaimer

This webinar is intended solely to provide information to the public. The views and opinions expressed as part of this webinar do not necessarily state or reflect those of the U.S. Environmental Protection Agency. It is not intended, nor can it be relied upon, to create any rights enforceable by any party in litigation with the United States, or to endorse the use of products or services provided by specific vendors. With respect to this webinar, neither the United States Government nor any of their employees, makes any warranty, express or implied, including the warranties of merchantability and fitness for a particular purpose, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, or represents that its use would not infringe privately owned rights.


A photograph of Gloria B. Post, Ph.D.Gloria B. Post, Ph.D., New Jersey Department of Environmental Protection (NJDEP) (
Gloria B. Post, Ph.D., D.A.B.T. is a Research Scientist in the New Jersey Department of Environmental Protection (NJDEP) Division of Science and Research. She is a toxicologist with responsibility for human health risk assessment of contaminants found in New Jersey's environment. Since 2006, she has been a member of the NJ Drinking Water Quality Institute, an advisory body that recommends drinking water standards to NJDEP. Dr. Post has focused on the evaluation of PFAS in drinking water for more than 15 years, and she is the first author of five publications (including three critical reviews) and the co-author of three additional publications on this topic. She was a major contributor to the Human Health and Surface Water sections of the Interstate Technology & Regulatory Council (ITRC) PFAS Technical and Regulatory Document the Environmental Council of the States (ECOS) white paper on states' regulatory standards for PFAS, and she served on the National Academy of Sciences Planning Committee for the Workshop on Federal Human Health PFAS Research. She has been a Diplomate of the American Board of Toxicology since 1990. Dr. Post holds an A.B. with honors in Biochemical Sciences from Princeton University and a Ph.D. in Pharmacology from Thomas Jefferson University, with post-doctoral research at Duke University.

A photograph of Kevin Long, M.S.Kevin Long, M.S., Terraphase Engineering Inc (
Kevin Long, M.S. is a Principal Consultant in Terraphase Engineering Inc's Princeton, NJ office. He has more than two decades of experience in applying risk assessment and risk management strategies to support remedial action and closure of sites across the country. His work has included sites that have required the evaluation of unique exposure scenarios or exposure to complex and emerging chemicals, including PFAS. He has been a member of ITRC since 2011 and has supported the development of technical guidance and training regarding site risk assessment, bioavailability of contaminants in soil, and PFAS. Kevin earned BS and MS degrees, both in Civil and Environmental Engineering, from Princeton University in Princeton, NJ.

A photograph of Chris McCarthy, M.S.Chris McCarthy, M.S., Jacobs (
Chris McCarthy, M.S. is a nationally recognized ecological risk assessment expert with 24 years of experience. Chris has led risk assessments at sites around the U.S., Australia, Canada, and France. He directs teams in evaluating the likelihood and magnitude of adverse effects to human and non-human biota exposed to contaminants at hazardous waste sites and working with engineers on risk management strategies. Chris has been actively engaged in the thought leadership for PFAS ecotoxicity related work, leading toxicity studies with PFAS, and leading PFAS risk assessments at sites through the US and Australia. Chris regularly presents updates and gives training on the ecotoxicity and risk assessment of PFAS to audiences around the world. Chris is also an active member of the ITRC PFAS team including the regulations, toxicity, risk assessment, and surface water criteria subgroups. Chris earned a BS in Water Resources Management from University of New Hampshire and an M.S. in Biology from Minnesota State University.

A photograph of Linda C. Hall, Ph.D.Linda C. Hall, Ph.D. (
Linda C. Hall, Ph.D., is an environmental toxicologist based in California's San Francisco Bay Area. She holds a MS degree in Toxicology from California State University, San Jose and a PhD in Ecological Toxicology from University of California, Davis. She has actively followed the emerging science of PFAS toxicology and is in her fourth year as co-lead for the PFAS Regulations, Toxicity, and Risk Assessment Writing Subgroup for the Interstate Technology Regulatory Council (ITRC) PFAS Team. In that role, she coordinates, edits, and contributes to technical guidance on the human health, ecological toxicology, regulations, and risk assessment of PFAS. Dr. Hall's practice has focused on the toxicology and regulation of PFAS for many years. During that time, she has worked as a technical expert in toxicology on PFAS litigations involving aqueous film-forming foam (AFFF) contamination of drinking water; PFAS manufacturing releases to air and water at multiple sites, and the food chain transfer and potential health effects of PFAS in crops grown on soils amended with biosolids. She is a frequent presenter on PFAS at conferences and seminars. Prior to working as an environmental consultant, Dr. Hall was a Principal Investigator (PI) and co-PI for at the University of California and at Lawrence Livermore National Laboratory.

A photograph of Peter M. Strauss, M.S.Peter M. Strauss, M.S., PM Strauss and Associates (
Peter M. Strauss, M.S. is the sole proprietor of PM Strauss and Associates. With over 40 years of consulting experience, he has a demonstrated history of working with non-profit community organizations on RCRA, CERCLA and Brownfields projects for environmental remediation issues. Peter has been an active member and stakeholder lead in the ITRC PFAS team. Peter received an MS in Environmental Studies from State University of New York College of Environmental Sciences and Forestry.

A photograph of Kerry Kirk PflughKerry Kirk Pflugh, New Jersey Department of Environmental Protection (
Kerry Kirk Pflugh is the Director for Local Government at the New Jersey Department of Environmental Protection. She is the department's liaison between New Jersey's 565 Mayors, 21 counties and the 75 programs in DEP. She is responsible for troubleshooting, helping officials navigate the agency and identify the correct programs and people to resolve problems. She is also responsible for facilitating meetings between officials and agency personnel. Ms. Pflugh's area of expertise is strategic communication planning focusing on citizen participation in environmental management decision-making. She is the recipient of numerous awards including: Cabinet Liaison of the Year, New Jersey Conference of Mayors, April, 2019;
George Hammell Cook Distinguished Alumni Award for Outstanding Achievement in Professional and Civic Endeavors, April 2017; and The Elizabeth River/Arthur Kill Watershed Association Appreciation Award, October 2016. Kerry earned a BA in Environmental Communication, Cook College, Rutgers University and an MS in Agricultural Journalism University of Wisconsin-Madison. Kerry is a co-lead for the ITRC PFAS Team Risk Communication writing subgroup.


Nicole Henderson, ITRC Contractor (

A photograph of Kate Emma SchlosserKate Emma Schlosser, NH Dept. of Environmental Services (
Kate Emma A. Schlosser, P.E. serves as the supervisor of the Emerging Contaminants Section of the NH Department of Environmental Services (NHDES) Hazardous Waste Remediation Bureau, and currently focuses her work on investigation and response actions for PFAS contaminated sites. Prior to joining the NHDES in 2016, Kate Emma worked in private consulting for 15 years, where her experience included environmental site assessment, remedial actions, and brownfields redevelopment for the public and private sectors. Kate Emma received a BS in Civil Engineering with a concentration in Environmental Engineering from the University of Vermont, and is a registered professional engineer in New Hampshire. Kate Emma is currently a co-leader of the ITRC PFAS Team

Lesley Hay Wilson, Sage Risk Solutions (

Webinar Slides and References:

Additional Resources:

  • These materials will be available by

Thank you for participating in our webinar. We would like to receive any feedback you might have that would make this service more valuable.

Prior to participating in today's Roundtable, which of ITRC'S PFAS resources related to today's topics, have you used? (select all that apply)

Web-based technical and regulatory guidance document
Facts Sheets
YouTube videos
Classroom training
PFAS Roundtables

Looking ahead, how likely are you to use this guidance or other ITRC PFAS resources?

I have already used
I plan to use within the next month
I plan to use within the next six months
I will make a note for future use
It is unlikely I will use the ITRC PFAS materials

In relation to the PFAS topics covered in this session, the Roundtable answered

a few of my questions
many of my questions
all of my questions
none of my questions
I did not have any specific questions

Rate the overall effectiveness of the presenters


Additional comments on presenters:

In relation to the PFAS topics covered in this session, please rate the following statements:

Strongly Disagree Disagree Neither agree nor disagree Agree Strongly Agree

This was an effective way for me to learn

I am better prepared to use the PFAS Guidance

This provided information not available elsewhere

I will share what I learned with colleagues

I am better able to address PFAS issues

The initial presentation was very helpful

What aspects of the Roundtable were not effective for you? (select all that apply)

It was hard to follow along
I did not have sufficient background
There was little to no new information
It was too long
It was too short

Do you have any comments or suggestions for improving future Roundtables?

Which of the following PFAS Roundtable Sessions are you likely to attend? (select all that apply)

If you have any remaining questions about today's topics, or about any of the upcoming PFAS Roundtable session topics, please let us know.

EPA's TechDirect e-mail
ITRC e-mail
ITRC Web site (
CLU-IN Web site (

How did you find out about this course?

If you answered "other," how did you find out about this course?

I participated live on June 10, 2021 (select ONLY if you registered for the event yourself)
I participated live on June 10, 2021 with another registered participant






Help & FAQs

Adobe Connect Resources

This seminar will be delivered through Adobe® Connect™ with streaming audio delivered through your computer speakers or headphones. We strongly encourage you to test your computer or mobile app prior to attending this seminar using the links below. Technical support on the day of the seminar will be very limited and subject to significant delays.

Rehabilitation Act Notice for Reasonable Accommodation

It is EPA's policy to make reasonable accommodation to persons with disabilities wishing to participate in the agency's programs and activities, pursuant to the Rehabilitation Act of 1973, 29 U.S.C. 791. Any request for accommodation should be made to at or , preferably one week or more in advance of the seminar, so that EPA will have sufficient time to process the request. EPA would welcome specific recommendations from requestors specifying the nature or type of accommodation needed, such as closed captioning.

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Jean Balent
Technology Integration and Information Branch

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Technology Integration and Information Branch

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