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

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

Consumption by Tribes of Plants and Animals Not Accounted for in EPA Superfund Risk Assessment Methodology

Sponsored by: US EPA OLEM OSRTI

Archived: Wednesday, June 3, 2020
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This webinar will describe the process and results from a research project concerning two issues that arise when assessing risks from contamination at Superfund sites. The first area of focus analyzed information from Superfund risk assessments and other publicly available studies on fruit and vegetable consumption by Native Americans that are outside of the twenty-four produce categories EPA includes in risk assessment models used to develop cleanup levels for residential gardens and farms at radioactively contaminated Superfund sites. The second area of focus of the project analyzed the sources for information on animal consumption by Native Americans that is outside of the twelve farm animal categories in EPA's risk assessment models.

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A photograph of Stuart WalkerStuart Walker, U.S. EPA Office of Superfund Remediation and Technology Innovation (
Stuart Walker has been employed by U.S. EPA in Washington, DC since 1990 in either the Superfund program (the Office of Superfund Remediation and Technology Innovation) or the Office of Radiation and Indoor Air working on issues regarding the cleanup of contaminated sites. His primary area of responsibility includes serving as the Superfund program's national lead on issues regarding radioactively contaminated CERCLA sites. In this role, Stuart develops national policy for risk assessment including models, community involvement, compliance with Applicable or Relevant and Appropriate requirements (ARARs), establishing cleanup levels and management of radioactive contamination at CERCLA sites.

A photograph of Grace MaleyGrace Maley, U.S. EPA Intern
Grace Maley is finishing her third year at Middlebury College where she is majoring in Environmental Economics with a minor in Mathematics. This project is a part of her year-long internship with the EPA Office of Superfund Remediation and Technology Innovation.


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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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: