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


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

Analytical Tools and Methods: Session III - Fate and Transport of Contaminants

Sponsored by: NIEHS Superfund Research Program

Archived: Monday, June 12, 2017
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This webinar series highlights innovative analytical tools and methods developed and used by Superfund Research Program (SRP) grantees. The presenters will feature the benefits of these new tools and methods compared to conventional methods. They also will include information about how the technology has helped to facilitate ongoing SRP research.

During the third session of the series, speakers will highlight tools and methods to detect contaminants and measure their fate and transport in the environment. The speakers will highlight work related to polychlorinated biphenyls (PCBs), per- and polyfluoroalkyl substances (PFASs), chlorinated solvents, and other chemicals in the environment.

Keri Hornbuckle, Ph.D., professor of civil and environmental engineering at the University of Iowa, will discuss advances in the measurement of PCBs in complex environmental matrices. Her laboratory has developed methods for reproducible, accurate, and precise measurements of all 209 PCB congeners at sub-ppb levels in indoor and ambient air, water, soils, sediments, pore waters, plant tissues, and human blood serum. She will discuss methods for sampling, pressurized solid extraction, automated concentration and purification, detection using triple quadrupole mass spectrometry, and quality control and assurance methods that deliver whole method quantification limits less than 1 ng of total PCBs /sample.

Jennifer Guelfo, Ph.D., a postdoctoral researcher and State Agencies Liaison in the Brown SRP Center, will provide background related to PFASs and discuss key challenges and knowledge gaps related to fate and transport. She will also present an overview of PFAS occurrence in large-scale drinking water systems across the United States using data from EPA’s unregulated contaminant monitoring rule (UCMR)-3 collection effort. Lastly, she will introduce a collaborative effort between the Brown SRP and state regulators that is targeted at providing a user-friendly geospatial framework for identification of potential PFAS source zones.

Mark Brusseau, Ph.D., professor in the school of earth and environmental sciences at the University of Arizona, will describe the Integrated Contaminant Elution and Tracer (ICET) test for improved characterization of mass transfer, attenuation, and mass removal. Extensive and persistent groundwater contaminant plumes are widespread at sites contaminated by compounds such as chlorinated solvents, 1,4-dioxane, Methyl Tertiary Butyl Ether, and perfluorinated chemicals. Improved characterization methods are needed to delineate and quantify the processes and factors that contribute to plume persistence. This presentation will summarize the ICET test, with illustrative applications for characterizing constraints to mass removal.

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 Sara Amolegbe at 919-213-4906 or samolegbe@michaeldbaker.com, 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 accommodation requests for closed captioning are not necessary. Closed captioning is being provided for all CLU-IN webinars as of October 1, 2016.

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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 and poll responses provided by you during the live event. 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 (703) 603-9924 or balent.jean@epa.gov to discuss your concerns.

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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.

Presenters:

Keri Hornbuckle, Ph.D.Keri Hornbuckle, Ph.D., University of Iowa (keri-hornbuckle@uiowa.edu or 319-384-0789)
Keri Hornbuckle, Ph.D., is the Donald E. Bently Professor of Engineering and Professor of Civil & Environmental Engineering. She also serves as on the faculty of the Interdisciplinary Graduate Program in Human Toxicology, all at the University of Iowa. Her research examines how polychlorinated biphenyls (PCBs) and other toxic semivolatile organic pollutants are released and transported through the environment. She and her team operate large scale air sampling networks in Chicago, Northwest Indiana and rural Iowa, and conducts field and laboratory measurements of PCBs and related compounds in indoor/outdoor air, water, sediment, soils, human serum, and tissues from laboratory animals. Innovations in sample analysis have led to major discoveries, including the presence of non-Aroclor PCBs in the environment and in humans, and the release of OH-PCBs from legacy use of Aroclors. Her research is supported by the Iowa Superfund Research Program (SRP/NIEHS) as well as the Great Lakes National Program Office of the U.S. EPA and the National Science Foundation. Hornbuckle is a past President of the International Association for Great Lakes Research and is Associate Editor of the American Chemical Society journal Environmental Science & Technology. She was awarded an early CAREER development award from NSF, the University of Iowa Distinguished Achievement Award for women faculty, and the College of Engineering Distinguished Research Award.


Jennifer GuelfoJennifer Guelfo, Brown University (Jennifer_Guelfo@brown.edu or 225-223-1319)
Jennifer Guelfo, Ph.D., is a postdoctoral researcher and State Agencies Liaison in the Brown Superfund Research Program. She is active in both research and research translation related to analysis, fate/transport, and remediation of contaminants in groundwater. Her current research focuses on understanding key physico-chemical variables governing fate, transport, and remediation of poly and perfluoroalkyl substances (PFASs) and development of user-friendly tools for geospatial identification of potential PFAS source zones. Dr. Guelfo completed her Ph.D. at the Colorado School of Mines (2013) studying PFAS fate and transport. She also has a combination of academic, consulting, and industry experience providing her with diverse perspectives in environmental management. She is interested in teaching and research that incorporates this interdisciplinary background and bridges gaps between researchers and practitioners through research translation to the broader scientific community.


Mark BrusseauMark Brusseau, University of Arizona (brusseau@email.arizona.edu or 520-621-3244)
Mark Brusseau, Ph.D., is a professor in the School of Earth and Environmental Sciences at the University of Arizona, with appointments in the Soil, Water and Environmental Science Department (Home) and the Hydrology and Atmospheric Science Department (Joint). Dr. Brusseau is a member of several professional societies, and is a Fellow of the American Geophysical Union, of the Geological Society of America, and of the Soil Science Society of America. Dr. Brusseau's research is focused on developing a fundamental understanding of the factors and processes influencing the transport and fate of contaminants in the subsurface. He is also interested in the development and evaluation of innovative subsurface remediation and characterization technologies, and the evaluation of risks posed to human health by contamination.


Moderator:

Felicia BarnettFelicia Barnett, U.S. Environmental Protection Agency (Barnett.Felicia@epa.gov or 404-562-8659)
Felicia Barnett is the director of the EPA Office of Research and Development Site Characterization and Monitoring Technical Support Center. She is also the EPA Region 4 Superfund and Technology Liaison. She provides expertise to the southeast region’s waste programs through investigative and engineering technical support, research, and innovative technologies, and is the national contact for waste site characterization and monitoring support. Barnett joined EPA in 1985 as a site assessment manager for the Superfund Program and later worked as a Remedial Project Manager cleaning up pesticide, creosote, volatile organic compound, and metals contaminated spills and dump sites. She was a member of the Brownfields US-German Bilateral Working Group which was responsible for developing and providing support for SMARTe, the Sustainable Management Approaches and Revitalization Tool —electronic. SMARTe is a national support tool to assist land revitalization stakeholders in their decision-making process.


Webinar Slides and References:


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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: (703) 603-9924 | Email: balent.jean@epa.gov
Michael Adam
Technology Integration and Information Branch

PH: (703) 603-9915 | Email: adam.michael@epa.gov