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

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

FRTR Presents...Per- and Polyfluoroalkyl Substances (PFAS) Emerging Characterization and Remedial Technologies, Session 1

Sponsored by: Federal Remediation Technologies Roundtable (FRTR)

Archived: Thursday, June 20, 2019
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This is part of a webinar series featuring presentations delivered at the Fall 2018 FRTR Meeting and related material. The meeting's objective was to identify and discuss the emerging science behind PFAS characterization and remedial technologies. This session will include the following topics:

  • What are PFAS, and What are the Issues with Them?
  • Treatment Technologies for PFAS Site Management

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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 Cindy Frickle at 703-603-8763 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.

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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 Linda Gaines, Ph.D.Linda Gaines, Ph.D., U.S. Environmental Protection Agency (
Linda Gaines is an environmental engineer and environmental health scientist. Previously, she worked as a consultant performing environmental site assessments and water and wastewater work. She then worked for the Texas Commission on Environmental Quality writing Title IV and V air permits and later RCRA hazardous waste permits. After earning her Professional Engineer's license, she went back to school for her Ph.D. to focus on environmental health, and now works in the Superfund Science Policy Branch in the area of human health risk assessments. She maintains the Superfund Chemical Database Matrix (SCDM) and the Regional Screening Levels (RSLs). The majority of her time is spent as the Superfund subject matter expert for per- and polyfluoroalkyl substances (PFAS).

A photograph of Ramona Iery, Ph.D.Ramona Iery, Ph.D., Naval Facilities Engineering and Expeditionary Warfare Center (
Ramona Iery is a Physical Scientist in the Environmental Restoration Division of the Naval Facilities Engineering and Expeditionary Warfare Center (NAVFAC EXWC). She has more than 10 years' experience in the field of environmental remediation. Her areas of expertise include fate and transport, site characterization, long term monitoring and remediation of contaminants like chlorinated solvents, petroleum hydrocarbons and emerging contaminants such as 1,4-dioxane and PFAS. She has been working with PFAS for the past five years in areas of site characterization, granular activated carbon treatment and regeneration and researching remedial technologies. Dr. Iery has published on PFAS treatment, taught workshops of PFAS, chaired PFAS sessions at conferences and served on the steering committee of the Emerging Contaminants Symposium. She is a member of the ITRC PFAS team.


A photograph of Jean BalentJean Balent, U.S. EPA Technology Innovation and Field Services Division ( or 202-566-0832)
Ms Balent is on the staff of the EPA's Technology Innovation and Field Services Division where she has worked to collect and disseminate hazardous waste remediation and characterization information since 2003. Ms Balent manages the Clean Up Information Network website and actively supports online communication and collaboration resources available to EPA. She formerly worked with the US Army Corps of Engineers Environmental Engineering Division in the Buffalo District. Ms Balent was also a member of the SUNY-Buffalo Groundwater Research Group where she constructed and tested large scale models of groundwater flow. Ms Balent has also conducted research relating to the Great Lakes, environmental remediation, and brownfields re-development. She holds a Bachelor's degree in environmental engineering from SUNY-Buffalo and a Master's degree in Information Technology from AIU.

A photograph of Cindy FrickleCindy Frickle, U.S. EPA Office of Superfund Remediation and Technology Innovation ( or 202-566-0927)
Cindy Frickle is a physical scientist with EPA's Superfund program where she reviews and propagates technical information to site cleanup professionals through Clu-In, EPA forums, and interagency channels. Prior to joining EPA, she spent time characterizing contaminated sites, coring sediments, studying microbes, and teaching. She completed her Biogeology MS and Geology BS in the University of Minnesota's School of Earth Sciences.

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If you have a suggested topic or idea for a future CLU-IN internet seminar, please contact:

Jean Balent
Technology Integration and Information Branch

PH: 202-566-0832 | Email:
Michael Adam
Technology Integration and Information Branch

PH: 202-566-0875 | Email: