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MERCURY REMEDIATION TECHNOLOGY DEVELOPMENT FOR LOWER EAST FORK POPLAR CREEK: FY 2017 PROGRESS REPORT
Peterson, M.J., M.A. Mayes, S.C. Brooks, T.J. Mathews, A. Johs, L. Gonez Rodriguez, et al.
ORNL/TM-2017/480, 85 pp, 2018

A major emphasis in 2017 of the ORNL technology development studies for mercury cleanup was on field characterization and obtaining a watershed-scale understanding. Task 1, Soil and Groundwater Source Control, focused on addressing downstream Hg sources to the creek (especially floodplain and bank soils) and groundwater. Task 2, Surface Water and Sediment Manipulation, centered on potential manipulation of in-stream processes, such as water and sediment chemistry factors that affect Hg methylation. Task 3, Ecological Manipulation, investigated methods to manipulate the food chain at both lower and higher levels of organization to decrease Hg concentrations in fish. Together, the three study tasks focused on manipulating the key factors that affect Hg concentrations in fish, i.e., the amount of inorganic Hg available to the ecosystem, conversion of inorganic Hg to methylmercury (MeHg), and bioaccumulation of MeHg through the food web. https://www.osti.gov/servlets/purl/1460231



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