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

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

Groundwater/Surface Water Interactions: Developing Conceptual Site Models of Organism Exposures in Hyporheic Systems

Sponsored by: U.S. EPA Region 10, Ground Water Forum, Office of Superfund Remediation and Technology Innovation, and Office of Research and Development

Archived: Friday, November 16, 2018
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This training workshop will present an overview of the relationships and interactions between groundwater and surface water bodies, giving participants a greater understanding of potential exposure scenarios. Discussions will focus on developing effective conceptual site models and how to collect useful data from the hyporheic zone, with case study examples. The training will end with a panel discussion and direction to EPA resources.

This workshop's content is directed toward Federal, State, Tribal, and University-level scientists, particularly hydrogeologists, ecologists, risk assessors, remedial project managers (RPMs), National Environmental Policy Act (NEPA) project reviewers, Tribal Specialists, EPA Superfund Technical Liaisons (STLs), EPA Regional Science Liaisons (RSLs), EPA Regional Science Councils (RSCs), and those involved with underground storage tanks.

Draft Agenda:

11:30 - 2:00
Distribution and movement of groundwater biota in alluvial systems including the role of biogeochemistry, scale, and other parameters that influence organism exposures to groundwater
Dr. Jack Stanford, retired Director at the Flathead Lake Biological Station

2:00 - 3:00
Developing effective conceptual site models; direct monitoring in the transition zone; contaminant fate and transport; examples of conceptual site models
Dr. Robert Ford, EPA Office of Research and Development

3:00 - 4:00
Lunch Break

4:00 - 4:30
Tools to collect the most useful data from the transition zone
Ian Bowen, EPA Region 8

4:30 - 5:15
Case Studies
Bill Brandon, EPA Region 1; Jonathan Williams, EPA Region 10; Henning Larson, Oregon Department of Environmental Quality

5:15 - 5:30

5:30 - 5:35
EPA resources and contacts for contaminated sites
Kira Lynch, Region 10 Superfund Technical Liaison

5:35 - 6:30
Panel Discussion


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 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.

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 Jack StanfordJack Stanford, Flathead Lake Biological Station ( or 406-982-3301)
Jack Stanford recently retired as Director and Bierman Professor of Ecology at the Flathead Lake Biological Station (University of Montana). He began research there in 1971 and served as Director from 1980-2016. During Dr. Stanford’s 45-year career at FLBS, he graduated 21 PhD and 28 MS students, and published over 220 scientific papers and books on ecosystem processes and influences of human activities. His continued research focuses on food web dynamics in Flathead Lake, the ecology of Pacific Rim salmon rivers and brown bear–salmon interactions in the Karluk region of Kodiak, Alaska. Researchers at FLBS continue to study water quality; lake, stream, river, & floodplain ecology; conservation genetics; salmonid ecology; climate science; remote sensing; and more.

A photograph of Robert FordRobert Ford, U.S. EPA Office of Research and Development ( or 513-569-7501)
Robert is on the staff of the EPA’s Office of Research and Development (ORD) and provides technical assistance to EPA Regions through ORD’s Engineering and Technical Support Center. His expertise is in development of technical knowledge and tools/processes that can be used to facilitate cleanup of inorganic contaminants in groundwater and surface water. His past work includes development of technical guidance for use of Monitored Natural Attenuation for cleanup of groundwater contaminated with metals and radionuclides. More recent work includes implementation of field research to support EPA Regions and States tackling cleanup at large, complex Superfund sites. He holds a Bachelor’s degree in civil engineering from Missouri S&T and a Doctoral degree in environmental engineering from Clemson University.

Henning Larsen, Oregon Department of Environmental Quality ( or 503-229-5527)
Henning Larsen is a Senior Hydrogeologist with the Oregon Department of Environmental Quality with 25 years of experience assessing and remediating hazardous substance cleanup sites. He has a Bachelor degree in geology from Humboldt State University and a Master in Water Resource and Environmental Engineering from Oregon State University. He has been a State participant in EPA’s Groundwater Forum since 2007.

A photograph of Ian BowenIan Bowen, EPA Region 8 ( or 303-312-7029)
Ian Bowen is a hydrogeologist for EPA Region 8 based in Denver, Colorado where he primarily supports the Superfund Program. He joined EPA in July 2015 after five years with the U.S. Army Corps of Engineers in Kansas City, where he performed similar duties. Ian has extensive experience with field data collection, data analysis and groundwater modeling. He and his wife, Karla, moved to Colorado to be nearer the mountains where they enjoy hiking, hunting, camping and scenic views.

A photograph of Bill BrandonBill Brandon, EPA Region 1 ( or 617-918-1391)
Bill Brandon has been working as a geoscientist for over 30 years. His broad experience has focused on waste site characterization and remediation. Providing technical support to develop robust conceptual site models has been a central element of his career. He has been on the forefront of a range of innovations affecting the remediation practice related to characterization and monitoring technologies, including developing simple, effective, and low-cost approaches for evaluating the groundwater-surface water interface. He has a B.S. in geology from Vanderbilt University and an M.S. in geology from the University of Montana and has been employed as a technical support hydrogeologist with U.S. EPA Region 1 since 1994.

A photograph of Jonathan WilliamsJonathan Williams, EPA Region 10 ( or 206-553-1369)
Jonathan Williams works as a Remedial Project Manager (RPM) in EPA’s Seattle Regional Office which serves Alaska and the Pacific Northwest states. His RPM work at EPA includes sites where contaminated groundwater discharges to surface water. Previous EPA experience has included the Underground Injection Control (UIC) and Sole Source Aquifer programs. Jonathan was raised in Portland, Oregon. He has B.S. and M.S. degrees in geology, is a licensed hydrogeologist, and is a member of EPA’s Ground Water Forum.

A photograph of Kira LynchKira Lynch, U.S. EPA Office of Research and Development ( or 206-553-2144)
Ms. Lynch is an environmental scientist with over twenty years experience in environmental characterization and remediation. She is currently the ORD STL in Region 10 and is providing technical support on RP, Federal Facility, and Superfund lead projects. She has expertise in the characterization and cleanup of groundwater DNAPL sites. She is a member of the EPA Engineering Forum. Prior to working for EPA Region 10, she served as one of the Army Corps Innovative Technology Advocates (ITAs) for ten years, and worked in the Quality Assurance Management Section (QAMS) for EPA Region 9. She has been involved in the design and evaluation of several Department of Defense Environmental Security Technology Certification Program (ESTCP) research projects and has served as an advisory committee member for the University of WA Superfund Research Program grant. She has been involved in the development of numerous EPA and US Army Corps guidance documents on environmental remediation and characterization. She has also been the author on several journal articles on cleanup approaches for DNAPL sites and the use of adaptive site management (Triad approach) to site characterization and cleanup.


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.

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.

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Jean Balent
Technology Integration and Information Branch

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Technology Integration and Information Branch

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