H33N:
Uranium Mobility in the Environment II


Session ID#: 10596

Session Description:
New and better knowledge of the physical, geochemical, and biological factors controlling uranium mobility is vital at many sites to protect human health and the environment.  Improving predictions of plume behavior is central to this effort. This session will highlight research that helps to advance basic and applied science required to sustain development of improved predictive models. Topics to be considered include:

 * What are the principle pools of uranium in contaminated or mined subsurface sites?

* What are the rates of uranium release from these pools?

* What are the processes controlling uranium release?

* When must rate-limited mass-transfer be considered, and how is this best accomplished?

* What types of data are required to support hydrogeologic and biogeochemical models?

* What remediation techniques are effective?

 We encourage submissions that discuss multidisciplinary efforts to address conceptual, analytical, and numerical capabilities as well as to develop biogeochemical process models.

Primary Convener:  William L Dam, Department of Energy Grand Junction, Grand Junction, CO, United States
Conveners:  John Bargar, SLAC National Accelerator Laboratory, Menlo Park, CA, United States, Mark L Brusseau, University of Arizona, Soil, Water and Environmental Science Department, School of Earth and Environmental Sciences, Tucson, AZ, United States; University of Arizona, Department of Hydrology and Water Resources, Tucson, AZ, United States and Paul W. Reimus, Los Alamos National Laboratory, Los Alamos, NM, United States
Chairs:  John Bargar, SLAC National Accelerator Laboratory, Menlo Park, United States and Paul W. Reimus, Los Alamos National Laboratory, Los Alamos, NM, United States
OSPA Liaison:  William L Dam, Department of Energy, Office of Legacy Management, Grand Junction, CO, United States

Cross-Listed:
  • B - Biogeosciences
  • V - Volcanology, Geochemistry and Petrology
Index Terms:

0414 Biogeochemical cycles, processes, and modeling [BIOGEOSCIENCES]
0432 Contaminant and organic biogeochemistry [BIOGEOSCIENCES]
1830 Groundwater/surface water interaction [HYDROLOGY]
1875 Vadose zone [HYDROLOGY]

Abstracts Submitted to this Session:

Utilizing hydrologic, statistical, and geochemical tools to assess uranium mobility in surface and near-surface environments (Invited) (60914)
David L Naftz, U.S. Geological Survey, Helena, MT, United States, Katherine E Walton-Day, U.S. Geological Survey, Denver, CO, United States, Christopher Fuller, USGS Western Regional Offices Menlo Park, Menlo Park, CA, United States, William L Dam, Department of Energy Grand Junction, Grand Junction, CO, United States, Martin A Briggs, USGS Groundwater Information, Reston, VA, United States and Terry Snyder, BLM, Salt Lake City, UT, United States
Seasonal Hydrologic Controls on Uranium and Iron Biogeochemistry in a Riparian Aquifer (Invited) (60580)
Michael J Wilkins1, Kenneth Hurst Williams2, Robert Danczak1, Steven Yabusaki3, Yilin Fang4 and Chad Hobson2, (1)The Ohio State Univ, Columbus, OH, United States, (2)Lawrence Berkeley National Laboratory, Berkeley, CA, United States, (3)Pacific Northwest National Laboratory, Richland, WA, United States, (4)Battelle, Pacific Northwest National Laboratory, Richland, United States
Oxidation of naturally reduced uranium in aquifer sediments by dissolved oxygen and its potential significance to uranium plume persistence (Invited) (70824)
James A Davis1, Richard L Smith2, John Karl Bohlke3, Noah Jemison4, Huang Xiang5, Deborah A Repert6, Xiu Yuan1 and Kenneth Hurst Williams7, (1)Lawrence Berkeley National Laboratory, Berkeley, CA, United States, (2)USGS Colorado Water Science Center Boulder, Boulder, CO, United States, (3)USGS, 431 National Center, Reston, VA, United States, (4)University of Illinois at Urbana Champaign, Urbana, IL, United States, (5)Peking University, Institute of Water Sciences, Beijing, China, (6)USGS Water Mission Area, Boulder, United States, (7)Lawrence Berkeley National Lab, Berkeley, CA, United States
Column Testing and 1D Reactive Transport Modeling to Evaluate Uranium Plume Persistence Processes (66372)
Raymond H Johnson1, Stan Morrison1, Sarah Morris1, Aaron Tigar2, William L Dam3 and Jalena Dayvault3, (1)Navarro Research and Engineering, Contractor for the U.S. Department of Energy Office of Legacy Management, Grand Junction, CO, United States, (2)RSI EnTech, LLC, Contractor to the U.S. Department of Energy Office of Legacy, Grand Junction, United States, (3)U.S. Department of Energy Office of Legacy Management, Grand Junction, CO, United States
Carbon Characteristics and Biogeochemical Processes of Uranium Accumulating Organic Matter Rich Sediments in the Upper Colorado River Basin (70090)
Kristin Boye, Stanford Earth Sciences, Stanford, CA, United States, Vincent Noel, SLAC National Accelerator Laboratory, Stanford Synchrotron Radiation Lightsource, Menlo Park, CA, United States, Malak M Tfaily, University of Arizona, Environmental Science, Tucson, AZ, United States, William L Dam, Department of Energy, Office of Legacy Management, Grand Junction, CO, United States, John Bargar, SLAC National Accelerator Laboratory, Menlo Park, CA, United States and Scott E Fendorf, Stanford University, Earth System Science, Stanford, CA, United States
Spectrosmicroscopic and spectroscopic investigation of U(IV) speciation in model mineral-organic matter assemblages (76966)
Sharon Bone, SLAC National Accelerator Laboratory, Menlo Park, CA, United States, James Dynes, Canadian Light Source, Saskatoon, SK, Canada and John Bargar, SLAC National Accelerator Laboratory, Menlo Park, United States
Pilot-Scale In-situ Biosequestration of Uranium in Groundwater at the Monument Valley UMTRA Site (82549)
Hua Zhong1, Diana Ivana Gutierrez2, Erin J Abel2, Raymond H Johnson3, Robert A Root2, Jon Chorover4 and Mark L. L Brusseau5, (1)Wuhan University, State Key Laboratory of Water Resources and Hydropower Engineering Science, Wuhan, China, (2)University of Arizona, Tucson, AZ, United States, (3)Organization Not Listed, Washington, DC, United States, (4)University of Arizona, Department of Environmental Science, Tucson, United States, (5)University of Arizona, Department of Soil, Water and Environmental Science, Tucson, AZ, United States

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