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Energy and Environment Directorate

Dawn Wellman

Dawn Wellman

Pacific Northwest National Laboratory
PO Box 999
Richland, WA 99352
(509) 375-2017

Biography

Dr. Wellman is a staff scientist, program manager, and the manager of the Environmental Health and Remediation market sector at Pacific Northwest National Laboratory. Dr. Wellman holds a Ph.D. in chemistry from Washington State University. Her scientific expertise is in understanding and predicting contaminant transport pathways and kinetics, aqueous and mineral surface geochemistry, and reaction kinetics for environmental remediation. She builds upon this fundamental understanding to develop and implement systems-based approaches for characterizing, monitoring and remediating contaminated groundwater and soil at sites throughout the Department of Energy, as well as internationally, supporting site contractors and site owners. In 2009, Dr. Wellman served as the Chief Scientist for the Office of Technology Innovation and Development for Groundwater and Soil Remediation, wherein she resolved technical issues and assessed technology readiness for addressing Department of Energy - Office of Environmental Management's challenges in groundwater and soil remediation. Currently, Dr. Wellman is the Program Manager of a multi-institutional science and technology DOE-EM program that coordinates and integrates efforts from basic science (DOE Office of Science), applied research (DOE-EM), and DOE site operation contractors, in a collaborative effort to address complex challenges in subsurface soil and groundwater characterization, remediation, and monitoring. Dr. Wellman is the technical lead for the joint DOE National Laboratory team (Savannah River and Pacific Northwest National Laboratories) supporting Tokyo Electric Power Company's response to on-site environmental contamination issues resulting from the Fukushima Daiichi incident. The Savannah River and Pacific Northwest National Laboratory team is working to understand radionuclide contaminant mitigation, develop and implement solutions to remediate environmental media, and demonstrate a systems-based understanding of the environmental remediation challenges in order to gain public and stakeholder support and acceptance.

Research Interests

  • Environmental Remediation
  • Contaminant transport and fate
  • Hydrodynamic-geochemical interactions of radionuclide and metal contaminants
  • Radionuclide geochemistry
  • Thermodynamic geochemical modeling
  • Reaction kinetics

Education and Credentials

  • Ph.D., Chemistry, Washington State University, 2004
  • B.S., Chemistry, cum laude, University of North Dakota, 1998

Affiliations and Professional Service

  • Adjunct Faculty, Chemistry Department, Washington State University
  • Adjunct Faculty, Department of Crop and Soil Science, Washington State University
  • Mineralogical Society of America
  • Geochemical Society
  • American Chemical Society
  • Environmental Science Division of American Chemical Society
  • Peer Reviewer ~ Stanford Synchrotron Radiation Laboratory User Facilities
  • Peer Reviewer ~ Environmental Chemistry, Applied Geochemistry, Geochimica et Cosmochimica Acta , Environmental Science and Technology, Soil Science Society of America, Solid State Sciences, Inorganic Chemistry, Geochemical Transactions, Soil and Sediment Contamination An International Journal

Awards and Recognitions

  • Exceptional Contribution, Pacific Northwest National Laboratory, 2010, 2008
  • Pacific Northwest National Laboratory Nominee – DOE-Office of Science Laboratory Director’s Award for Early Career Exceptional Achievement, 2008
  • Laboratory Director’s Award for Early Career Exceptional Achievement, Pacific Northwest National Laboratory, 2007
  • DOE Outstanding Mentor Award, Pacific Northwest National Laboratory, 2006, 2005
  • U.S. Patent 7,691,637; Method and Apparatus for Ion Sequestration and a Nanostructured Metal Phosphate, Issued April 6, 2010.

PNNL Publications

2018

  • Gudavalli R., Y. Katsenovich, and D.M. Wellman. 2018. "Quantification of kinetic rate law parameters for the dissolution of natural autunite in the presence of aqueous bicarbonate ions at high concentrations." Journal of Environmental Radioactivity 190-191. PNNL-SA-127528. doi:10.1016/j.jenvrad.2018.04.007

2017

  • Freedman V.L., M.J. Truex, M. Rockhold, D.H. Bacon, M.D. Freshley, and D.M. Wellman. 2017. "Elements of complexity in subsurface modeling, exemplified with three case studies." Hydrogeology Journal 25, no. 6:1853-1870. PNNL-SA-128996. doi:10.1007/s10040-017-1564-6
  • Parker K.E., and D.M. Wellman. 2017. The Evaluation of Novel Tin Materials for the Removal of Technetium from Groundwater. PNNL-26730. Richland, WA: Pacific Northwest National Laboratory.
  • Subramanian K.H., M.G. Thien, D.M. Wellman, and C.C. Herman. 2017. "Integration of National Laboratory and Low-Activity Waste Pre-Treatment System Technology Service Providers - 16435." In Annual Waste Management Conference (WM2016): Education & Opportunity in Waste Management, March 6-10, 2016, Phoenix, Arizona, 4, 2737-2746. Tempe, Arizona:Waste Management Symposia, Inc. PNNL-SA-115596.

2016

  • Lee M.H., M.J. Truex, M.D. Freshley, and D.M. Wellman. 2016. "IDAHO NATIONAL LABORATORY TEST AREA NORTH: APPLICATION OF ENDPOINTS TO GUIDE ADAPTIVE REMEDIATION AT A COMPLEX SITE." Remediation 26, no. 4:11-25. PNNL-SA-118280. doi:10.1002/rem.21483
  • Zhang Z.F., D.M. Wellman, J.G. Morse, K.D. Leary, and M.D. Freshley. 2016. "Performance of a Surface Barrier for Waste Isolation and Flux Reduction at the Hanford Site." In Annual Waste Management Conference (WM2016), March 6-10, 2016, Phoenix, Arizona, 5, 3474-3482, Paper No. 16099. Tempe, Arizona:Waste Management Symposia, Inc. PNNL-SA-114505.

2015

  • Gartman B.N., N. Qafoku, J.E. Szecsody, R.K. Kukkadapu, Z. Wang, D.M. Wellman, and M.J. Truex. 2015. "Uranium Fate in Hanford Sediment Altered by Simulated Acid Waste Solutions." Applied Geochemistry 63, no. December 2015:1-9. PNNL-SA-105743. doi:10.1016/j.apgeochem.2015.07.010
  • Johnson T.C., and D.M. Wellman. 2015. "Accurate modeling and inversion of electrical resistivity data in the presence of metallic infrastructure with known location and dimension." Geophysical Journal International 202, no. 2:1096-1108. PNNL-SA-104673. doi:10.1093/gji/ggv206
  • Sepulveda-Medina P., Y. Katsenovich, D.M. Wellman, and L. Lagos. 2015. "The Effect of Bicarbonate on the Microbial Dissolution of Autunite Mineral in the Presence of Gram-Positive Bacteria." Journal of Environmental Radioactivity 144. PNNL-SA-106682. doi:10.1016/j.jenvrad.2015.03.002
  • Xu C., D.I. Kaplan, S. Zhang, M. Athon, Y. Ho, H. Li, and C. Yeager, et al. 2015. "Radioiodine sorption/desorption and speciation transformation by subsurface sediments from the Hanford Site." Journal of Environmental Radioactivity 139. PNNL-SA-94653. doi:10.1016/j.jenvrad.2014.09.012

2014

  • Bunn A.L., B.G. Fritz, and D.M. Wellman. 2014. 100-OL-1 Operable Unit Field Portable X-Ray Fluorescence (XRF) Analyzer Pilot Study Plans. DOE/RL-2014-38 Rev. 0; PNNL-23471. Richland, WA: Pacific Northwest National Laboratory.
  • Bunn A.L., B.G. Fritz, B.A. Pulsipher, A.M. Gorton, L.E. Bisping, J.M. Brandenberger, and C. Pino, et al. 2014. 100-OL-1 Operable Unit Pilot Study: XRF Evaluation of Select Pre-Hanford Orchards. PNNL-23868. Richland, WA: Pacific Northwest National Laboratory.
  • Golovich E.C., S.V. Mattigod, M. Snyder, L. Powers, G.A. Whyatt, and D.M. Wellman. 2014. Radionuclide Migration through Sediment and Concrete: 16 Years of Investigations. PNNL-23841. Richland, WA: Pacific Northwest National Laboratory.
  • Kaplan D.I., M.E. Denham, S. Zhang, C. Yeager, C. Xu, K. Schwehr, and H. Li, et al. 2014. "Radioiodine Biogeochemistry and Prevalence in Groundwater." Critical Reviews in Environmental Science and Technology 44, no. 20:2287-2335. PNNL-SA-94623. doi:10.1080/10643389.2013.828273
  • Parker K.E., E.C. Golovich, and D.M. Wellman. 2014. Iodine Adsorption on Ion-Exchange Resins and Activated Carbons- Batch Testing. PNNL-23730; RPT-DVZ-AFRI-021, Rev. 0. Richland, WA: Pacific Northwest National Laboratory.

2013

  • Bunn A.L., M.J. Truex, M. Oostrom, K.C. Carroll, and D.M. Wellman. 2013. "Integrated Systems-Based Approach to Monitoring Environmental Remediation." In Proceedings of the Annual Waste Management Symposium (WM2013): International Collaboration and Continuous Improvement, February 24-28, 2013, Phoenix, Arizona USA, 7, 5469-5477, Paper No. 13211. Tucson, Arizona:WM Symposia. PNNL-SA-92011.
  • Gudavalli R., Y. Katsenovich, D.M. Wellman, L. Lagos, and B. Tansel. 2013. "Quantification of Kinetic Rate Law Parameters of Uranium Release from Sodium Autunite as a Function of Aqueous Bicarbonate Concentrations." Environmental Chemistry 10, no. 6:475-485. PNNL-SA-96820. doi:10.1071/EN13117
  • Gudavalli R., Y. Katsenovich, D.M. Wellman, M. Idarraga, L. Lagos, and B. Tansel. 2013. "Comparison of the Kinetic Rate Law Parameters for the Dissolution of Natural and Synthetic Autunite in the Presence of Aqueous Bicarbonate Ions." Chemical Geology 351. PNNL-SA-94622. doi:10.1016/j.chemgeo.2013.05.038
  • Johnson T.C., and D.M. Wellman. 2013. Re-Inversion of Surface Electrical Resistivity Tomography Data from the Hanford Site B-Complex. PNNL-22520; RPT-DVZ-AFRI-014. Richland, WA: Pacific Northwest National Laboratory.
  • Lee M.H., D.M. Wellman, M.J. Truex, K.S. Sorenson, Jr., R. Wymore, and M.D. Freshley. 2013. "Integrated Systems-Based Approach for Reaching Acceptable End Points for Groundwater." In Proceedings of the Annual Waste Management Symposium (WM2013), February 24-28, 2013, Phoenix, Arizona, 7, 5518-5531, Paper No. 13629. Tucson, Arizona:WM Symposia. PNNL-SA-92923.
  • Parker K.E., E.C. Golovich, and D.M. Wellman. 2013. Uranium Adsorption on Granular Activated Carbon - Batch Testing. PNNL-22805. Richland, WA: Pacific Northwest National Laboratory.
  • Snyder M., E.C. Golovich, D.M. Wellman, J.V. Crum, R. Lapierre, D.C. Dage, and K.E. Parker, et al. 2013. Radionuclide Retention in Concrete Wasteforms - FY13. PNNL-22880. Richland, WA: Pacific Northwest National Laboratory.
  • Szecsody J.E., M.J. Truex, N. Qafoku, D.M. Wellman, C.T. Resch, and L. Zhong. 2013. "Influence of Acidic and Alkaline Waste Solution Properties on Uranium Migration in Subsurface Sediments." Journal of Contaminant Hydrology 151. PNNL-SA-96107. doi:10.1016/j.jconhyd.2013.05.009
  • Triplett M.B., D.J. Watson, and D.M. Wellman. 2013. Risks from Past, Current, and Potential Hanford Single Shell Tank Leaks. PNNL-22483. Richland, WA: Pacific Northwest National Laboratory.
  • Wellman D.M., M.D. Freshley, M.B. Triplett, M.J. Truex, and M.H. Lee. 2013. Mitigating the Risks of Contamination within Vadose Zone Environments. PNNL-22618. Richland, WA: Pacific Northwest National Laboratory.
  • Wellman D.M., M.D. Freshley, M.J. Truex, and M.H. Lee. 2013. "Alternate Endpoints for Deep Vadose Zone Environments: Challenges, Opportunities, and Progress." In Proceedings of the Annual Waste Management Symposium (WM2013): International Collaboration and Continuous Improvement, February 24-28, 2013, Phoenix, Arizona, 7, 5567-5580, Paper No. 13036. Tucson, Arizona:WM Symposia. PNNL-SA-92761.
  • Wellman D.M., M.D. Freshley, M.J. Truex, and M.H. Lee. 2013. "Deep Vadose Zone Remediation: Technical and Policy Challenges, Opportunities, and Progress in Achieving Cleanup Endpoints." In Proceedings of the ASME 2013 15th International Conference on Environmental Remediation and Radioactive Waste Management (ICEM2013), September 8-12, 2013, Brussels, Belgium, 2, Paper No. ICEM2013-96011. New York, New York:ASME. PNNL-SA-93886. doi:10.1115/ICEM2013-96011
  • Wellman D.M., M.J. Truex, T.C. Johnson, A.L. Bunn, and E.C. Golovich. 2013. Deep Vadose Zone-Applied Field Research Initiative Fiscal Year 2012 Annual Report. PNNL-22322. Richland, WA: Pacific Northwest National Laboratory.
  • Zhang S., C. Xu, D. Creeley, Y. Ho, H. Li, R. Grandbois, and K. Schwehr, et al. 2013. "Iodine-129 and Iodine-127 speciation in groundwater at the Hanford Site, U.S.: iodate incorporation into calcite." Environmental Science & Technology 47, no. 17:9635-9642. PNNL-SA-94288. doi:10.1021/es401816e
  • Zhang S., C. Xu, D. Creeley, Y. Ho, H. Li, R. Grandbois, and K. Schwehr, et al. 2013. "Response to Comment on “Iodine-129 and Iodine-127 Speciation in Groundwater at Hanford Site, U.S.: Iodate Incorporation into Calcite”." Environmental Science & Technology 47, no. 22:13205-13206. PNNL-SA-100335. doi:10.1021/es4046132

2012

  • Bailey K.L., F.A. Tilton, D.P. Jansik, S.J. Ergas, M.J. Marshall, A.L. Miracle, and D.M. Wellman. 2012. "Growth Inhibition and Stimulation of Shewanella oneidensis MR-1 by Surfactants and Calcium Polysulfide." Ecotoxicology and Environmental Safety 80. PNNL-SA-84510.
  • Bunn A.L., D.M. Wellman, R.A. Deeb, E.L. Hawley, M.J. Truex, M. Peterson, and M.D. Freshley, et al. 2012. "Scientific Opportunities for Monitoring of Environmental Remediation Sites - (SOMERS)." In Annual Waste Management Symposium (WM2012): Improving the Future in Waste Management, February 26 - March 1, 2012, Phoenix, Arizona, Paper No. 12224. Phoenix, Arizona:WM Symposia. PNNL-SA-85078.
  • Bunn A.L., D.M. Wellman, R.A. Deeb, E.L. Hawley, M.J. Truex, M. Peterson, and M.D. Freshley, et al. 2012. Scientific Opportunities for Monitoring at Environmental Remediation Sites (SOMERS): Integrated Systems-Based Approaches to Monitoring. PNNL-21379. Richland, WA: Pacific Northwest National Laboratory.
  • Gerdes K.D., G.S. Chamberlain, D.M. Wellman, R.A. Deeb, E.L. Hawley, L. Whitehurst, and J. Marble. 2012. "Closure End States for Facilities, Waste Sites, and Subsurface Contamination." In Annual Waste Management Symposium (WM2012): Improving the Future in Waste Management, February 26 - March 1, 2012, Phoenix, Arizona, Paper No. 12543. Tucson, Arizona:WM Symposia. PNNL-SA-84252.
  • Katsenovich Y., D.A. Carvajal, D.M. Wellman, and L. Lagos. 2012. "Enhanced U(VI) release from autunite mineral by aerobic Arthrobacter sp. in the presence of aqueous bicarbonate." Chemical Geology 308-309. PNNL-SA-83650. doi:10.1016/j.chemgeo.2012.03.010
  • Katsenovich Y., D.A. Carvajal, D.M. Wellman, and L. Lagos. 2012. "Enhanced U(VI) release from autunite mineral by aerobic Arthrobacter sp. in the presence of aqueous bicarbonate." Chemical Geology 308-309. PNNL-SA-87202. doi:10.1016/j.chemgeo.2012.03.010
  • Mattigod S.V., C.C. Bovaird, D.M. Wellman, K.E. Parker, and M.I. Wood. 2012. "An Experimental Study of Diffusivity of Technetium-99 in Hanford Vadose Zone Sediments." Vadose Zone Journal 11, no. 4. PNNL-SA-84094. doi:10.2136/vzj2011.0184
  • Mattigod S.V., D.M. Wellman, C.C. Bovaird, K.E. Parker, K.P. Recknagle, L.N. Clayton, and M.I. Wood. 2012. "Diffusion of Radionuclides in Concrete and Soil." In Radioactive Waste, edited by RA Rahman. 331-350. New York, New York:InTech. PNNL-SA-82762.
  • Rod K.A., D.M. Wellman, M. Flury, E.M. Pierce, and J.B. Harsh. 2012. "Diffusive release of uranium from contaminated sediments into capillary fringe pore water." Journal of Contaminant Hydrology 140-141. PNNL-SA-86638. doi:10.1016/j.jconhyd.2012.09.002
  • Rod K.A., D.M. Wellman, M. Flury, E.M. Pierce, and J.B. Harsh. 2012. "Diffusive Release of Uranium from Contaminated Sediments into Capillary Fringe Pore Water." Journal of Contaminant Hydrology 140-141. PNNL-SA-99689. doi:10.1016/j.jconhyd.2012.09.002
  • Wellman D.M., D.P. Jansik, E.C. Golovich, and E.A. Cordova. 2012. Radionuclide Retention in Concrete Wasteforms. PNNL-21794. Richland, WA: Pacific Northwest National Laboratory.
  • Wellman D.M., M.D. Freshley, T.C. Johnson, and A.L. Miracle. 2012. "Contaminants in Vadose Zone Environments." Vadose Zone Journal 11, no. 4:Article No. 0159. PNNL-SA-93024. doi:10.2136/vzj2012.0159
  • Wellman D.M., M.J. Truex, M.D. Freshley, P.E. Dresel, and K.J. Cantrell. 2012. "Technical and Policy Challenges in Deep Vadose Zone Remediation of Metals and Radionuclides." In Annual Waste Management Symposium (WM2012): Improving the Future in Waste Management, February 26 - March 1, 2012, Phoenix, Arizona, Paper No. 12025. Tucson, Arizona:WM Symposia. PNNL-SA-84253.
  • Wellman D.M., S.V. Mattigod, S.S. Hubbard, A.L. Miracle, L. Zhong, M.W. Foote, and Y. Wu, et al. 2012. "Advanced Remedial Methods for Metals and Radionuclides in Vadose Zone Environments." Radwaste Solutions 19, no. 1:82-90. PNNL-SA-85536.
  • Wu Y., S. Hubbard, and D.M. Wellman. 2012. "Geophysical Monitoring of Foam used to Deliver Remediation Treatments within the Vadose Zone." Vadose Zone Journal 11, no. 4. PNNL-SA-86921. doi:10.2136/vzj2011.0160

2011

  • Bovaird C.C., D.P. Jansik, D.M. Wellman, and M.I. Wood. 2011. Radionuclide Retention in Concrete Wasteforms. PNNL-20760. Richland, WA: Pacific Northwest National Laboratory.
  • Chamberlain G.M., K.L. Skubal, and D.M. Wellman. 2011. "Fiscal Year 2010 Program of the U.S. DOE Office of Groundwater and Soil Remediation." In Waste Management 2010: Improving the Future by Dealing with the Past, March 7-11, 2010, Phoenix, Arizona, Paper No. 10587. Tucson, Arizona:WM Symposia. PNNL-SA-70496.
  • Dresel P.E., D.M. Wellman, K.J. Cantrell, and M.J. Truex. 2011. "Review: Technical and Policy Challenges in Deep Vadose Zone Remediation of Metals and Radionuclides." Environmental Science & Technology 45, no. 10:4207-4216. PNNL-SA-71305. doi:10.1021/es101211t
  • Foote M., A.T. Hart, A.T. Hart, D.M. Wellman, S.V. Mattigod, and L. Zhong. 2011. "Scale-Up Testing-Foam as a Remedial Amendment Carrier." In Waste Management (WM 2010): Improving the Future by Dealing with the Past, March 7-11, 2010, Phoenix, Arizona, Paper No. 10040. Tempe, Arizona:WM Symposia. PNNL-SA-70503.
  • Foote M.W., J. Bickford, D.M. Wellman, S.V. Mattigod, E.A. Cordova, and D.P. Jansik. 2011. "Scale-up Testing-Foam as A Remedial Amendment Carrier - 11029." In WM2011: Global Achievements and Challenges in Waste Management, February 27 - March 3, 2011, Phoenix, Arizona. Tucson, Arizona:WM Symposia, Inc. PNNL-SA-77146.
  • Gerdes K.D., G.S. Chamberlain, R.S. Aylward, M. Cercy, R. Seitz, R. Ramirez, and K.L. Skubal, et al. 2011. "The Office of Groundwater & Soil Remediation Fiscal Year 2011 Research & Development Program." In 37th Annual Radioactive Waste Management Symposium (WM 2011): Global Achievements and Challenges in Waste Management, February 27 - March 3, 2011, Phoenix, Arizona, Paper No. 11513. Tucson, Arizona:Waste Management Symposia, Inc. PNNL-SA-84470.
  • Gerdes K.D., S. Chamberlain, R.S. Aylward, M. Cercy, R. Seitz, R. Ramirez, and K.L. Skubal, et al. 2011. "The Office of Groundwater & Soil Remediation Fiscal Year 2011 Research & Development Program." In Proceedings of the 37th Annual Radioactive Waste Management Symposium (WM 2011): Global Achievements and Challenges in Waste Management, February 27-March 3, 2011, Phoenix, Arizona, 2, 1526-1537. Tucson, Arizona:WM Symposia. PNNL-SA-77120.
  • Golovich E.C., D.M. Wellman, R.J. Serne, and C.C. Bovaird. 2011. Summary of Uranium Solubility Studies in Concrete Waste Forms and Vadose Zone Environments. PNNL-20726. Richland, WA: Pacific Northwest National Laboratory.
  • Jansik D.P., D.M. Wellman, S.V. Mattigod, L. Zhong, Y. Wu, M. Foote, and Z.F. Zhang, et al. 2011. "FOAM: NOVEL DELIVERY TECHNOLOGY FOR REMEDIATION OF VADOSE ZONE ENVIRONMENTS." In 14th International Conference on Environmental Remediation and Radioactive Waste Management, September 25-29, Reims, France, 406-416. New York, New York:ASME. PNNL-SA-81100. doi:10.1115/ICEM2011-59019
  • Johnson T.C., M.J. Truex, D.M. Wellman, and J. Marble. 2011. "Characterization and monitoring of subsurface processes using parallel computing and electrical resistivity imaging." AGU Hydrology Section Newsletter. PNNL-SA-80302.
  • Mattigod S.V., D.M. Wellman, C.C. Bovaird, K.E. Parker, L.N. Clayton, L. Powers, and K.P. Recknagle, et al. 2011. Diffusion and Leaching Behavior of Radionuclides in Category 3 Waste Encasement Concrete and Soil Fill Material - Summary Report. PNNL-20683. Richland, WA: Pacific Northwest National Laboratory.
  • Tilton F.A., D.M. Wellman, C.C. Bovaird, and S.C. Strandquist. 2011. Characterization of Material from Wells 299-W10-35 (C7573) and 299-W14-74 (C7024). PNNL-20553. Richland, WA: Pacific Northwest National Laboratory.
  • Wellman D.M., J.S. Fruchter, V.R. Vermeul, E.L. Richards, D.P. Jansik, and E. Edge. 2011. "Evaluation of the efficacy of polyphosphate remediation technology: Direct and indirect remediation of uranium under alkaline conditions." Technology and Innovation 13, no. 2:151-164. PNNL-SA-60306. doi:10.3727/194982411X13085939956544
  • Wellman D.M., M.B. Triplett, M.D. Freshley, M.J. Truex, R.E. Gephart, T.C. Johnson, and G.B. Chronister, et al. 2011. "DEEP VADOSE ZONE APPLIED FIELD RESEARCH CENTER: TRANSFORMATIONAL TECHNOLOGY DEVELOPMENT FOR ENVIRONMENTAL REMEDIATION." In Proceedings of the 37th Annual Radioactive Waste Management Symposium (WM 2011): Global Achievements and Challenges in Waste Management, February 27-March 3, 2011, Phoenix, Arizona, 6, 4969-4982, Paper No. 11074. Tucson, Arizona:WM Symposia. PNNL-SA-76702.
  • Wellman D.M., M.J. Truex, M.D. Freshley, R.E. Gephart, M.B. Triplett, and T.C. Johnson. 2011. Implementation Plan for the Deep Vadose Zone-Applied Field Research Center. PNNL-20209. Richland, WA: Pacific Northwest National Laboratory.
  • Wellman D.M., T.C. Johnson, R.M. Smith, M.J. Truex, and H.E. Matthews. 2011. Deep Vadose Zone-Applied Field Research Initiative Fiscal Year 2011 Annual Report. PNNL-20757. Richland, WA: Pacific Northwest National Laboratory.

2010

  • Betancourt A.P., S.V. Mattigod, and D.M. Wellman. 2010. "Adsorption of Dissolved Metals in the Berkeley Pit using Thiol-Functionalized Self-Assembled Monolayers on Mesoporous Supports (Thiol-SAMMS)." In Proceedings of the 36th Annual Radioactive Waste Management Symposium, WM 2010, March 7-11, 2010, Phoenix, AZ, 4, 3405-3417, Paper No. 10150. Tucson, Arizona:Waste Management Symposia, Inc. PNNL-SA-69825.
  • Mattigod S.V., C.C. Bovaird, D.M. Wellman, and M.I. Wood. 2010. Radionuclide Retention in Concrete Waste Forms. PNNL-19823. Richland, WA: Pacific Northwest National Laboratory.
  • Mattigod S.V., D.M. Wellman, E.C. Golovich, E.A. Cordova, and R.M. Smith. 2010. Tc-99 Adsorption on Selected Activated Carbons - Batch Testing Results. PNNL-20136. Richland, WA: Pacific Northwest National Laboratory.
  • Mattigod S.V., E.C. Golovich, D.M. Wellman, E.A. Cordova, and R.M. Smith. 2010. Uranium Adsorption on Ion-Exchange Resins - Batch Testing. PNNL-20135. Richland, WA: Pacific Northwest National Laboratory.
  • Mattigod S.V., L. Zhong, D.P. Jansik, M. Foote, A.T. Hart, A.T. Hart, and D.M. Wellman. 2010. "Reactant Carrier Microfoam Technology for In-Situ Remediation of Radionuclide and Metallic Contaminants in Deep Vadose Zone." In Proceedings of the 36th Annual Radioactive Waste Management Symposium, WM 2010, March 7-11, 2010, Phoenix, AZ, 5, 4066-4076. Tucson, Arizona:Waste Management Symposia, Inc. PNNL-SA-70331.
  • Triplett M.B., M.D. Freshley, M.J. Truex, D.M. Wellman, K.D. Gerdes, B.L. Charboneau, and J.G. Morse, et al. 2010. "Integrated Strategy to Address Hanford's Deep Vadose Zone Remediation Challenges." In Proceedings of 13th International Conference on Environmental Remediation and Radioactive Waste Management. ICEM-2010, October 3-7, 2010, Tsukuba, Ibaraki Japan, Paper No. ICEM2010-40262. New York, New York:American Society of Mechanical Engineers. PNNL-SA-73041.
  • Wellman D.M., S.V. Mattigod, S. Hubbard, A.L. Miracle, L. Zhong, M. Foote, and Y. Wu, et al. 2010. "Advanced Remedial Methods for Metals and Radionuclides in Vadose Zone Environments." In ASME 2010 13th International Conference on Environmental Remediation and Radioactive Waste Management (ICEM2010), October 3-7, 2010, Tsukuba, Japan, 2, 585-592, Paper No. ICEM2010-40235. Tsukuba:American Society of Mechanical Engineers. PNNL-SA-73089. doi:10.1115/ICEM2010-40235

2009

  • Gorman-Lewis D., T. Shareva, K. kubatko, P. burns, D.M. Wellman, B.K. McNamara, and j. szymanowski, et al. 2009. "Thermodynamic properties of autunite, uranyl hydrogen phosphate, and uranyl orthophosphate from solubility and calorimetric measurements." Environmental Science & Technology 43, no. 19:7416-7422. PNNL-SA-65939.
  • Mattigod S.V., C.C. Bovaird, D.M. Wellman, D.J. Skinner, E.A. Cordova, and M.I. Wood. 2009. Effect of Concrete Waste Form Properties on Radionuclide Migration. PNNL-18745. Richland, WA: Pacific Northwest National Laboratory.
  • Nelson J.B., A.M. Davis, and D.M. Wellman. 2009. "Synthesis and Size Control of Cobalt Phosphate Rosettes Using Surfactant-Templated Synthesis." Inorganic Chemistry 48, no. 23:10857-10858. PNNL-SA-67941.
  • Pierce E.M., M.D. Freshley, S.S. Hubbard, B.B. Looney, J.M. Zachara, L. Liang, and D. Lesmes, et al. 2009. Scientific Opportunity to Reduce Risk in Groundwater and Soil Remediation. PNNL-18516. Richland, WA: Pacific Northwest National Laboratory.
  • Vermeul V.R., B.N. Bjornstad, B.G. Fritz, J.S. Fruchter, R.D. Mackley, D.R. Newcomer, and D.P. Mendoza, et al. 2009. 300 Area Uranium Stabilization Through Polyphosphate Injection: Final Report. PNNL-18529. Richland, WA: Pacific Northwest National Laboratory.
  • Wellman D.M., B.K. McNamara, D.H. Bacon, E.A. Cordova, R.M. Ermi, and L.M. Top. 2009. "Dissolution Kinetics of Meta-Torbernite under Circum-neutral to Alkaline Conditions." Environmental Chemistry 6, no. 6:551-560. PNNL-SA-65825.
  • Wellman D.M., C.C. Bovaird, K.E. Parker, E.A. Cordova, A.M. Davis, S.V. Mattigod, and L. Powers, et al. 2009. "Cementitious Wasteforms for Immobilization of Low-Activity Radioactive Wastes." In MRS Symposium Proceedings Series: 2009 MRS Spring Meeting - Scientific Basis for Nuclear Waste Management XXXIII, May 24-29, 2009, St Petersburg, Russia, edited by BE Burakov and AS Aloy, 1193, Paper No. 349. Warrendale, Pennsylvania:Materials Research Society. PNNL-SA-66511. doi:10.1557/PROC-1193-349
  • Wellman D.M., C.C. Bovaird, K.E. Parker, S.V. Mattigod, L.N. Clayton, L. Powers, and M.I. Wood, et al. 2009. "Cementitious Wasteforms for Immobilization of Low-Activity Radioactive Wastes." In Concrete Materials: Properties, Performance and Applications, edited by JT Sentowski. 283-326. Hauppage, New York:Nova Science Publishers. PNNL-SA-68446.
  • Wellman D.M., C.C. Bovaird, K.E. Parker, S.V. Mattigod, L.N. Clayton, L. Powers, and M.I. Wood. 2009. "Cementitious Wasteforms for Immobilization of Low-Activity Radioactive Wastes." In Concrete Materials: Properties, Performance and Applications, edited by JT Sentowski. 283-326. New York, New York:Nova Science Publishers. PNNL-SA-61535.
  • Wellman D.M., E.M. Pierce, C.C. Bovaird, J.R. Bargar, J.R. Bargar, S.M. Webb, and V.R. Vermeul, et al. 2009. "Polyphosphate Amendments for In-Situ Remediation of Uranium." In Proceedings of the 12th International Conference on Environmental Remediation and Radioactive Waste Management (ICEM '09/DECOM '09), October 11-15, 2009, Liverpool, United Kingdom, Paper No. 16026. New York, New York:American Society of Mechanical Engineers. PNNL-SA-65123.
  • Wellman D.M., E.M. Pierce, C.C. Bovaird, K.M. Griswold, K.M. Gunderson, S.M. Webb, and J.R. Bargar, et al. 2009. "Laboratory Development of Polyphosphate Remediation Technology for In Situ Treatment of Uranium Contamination in the Vadose Zone and Capillary Fringe." In Uranium: Compounds, Isotopes and Applications, edited by GH Wolfe. 473-555. New York, New York:Nova Science Publishers. PNNL-SA-65124.
  • Wellman D.M., E.M. Pierce, D.H. Bacon, J.S. Fruchter, V.R. Vermeul, and S.M. Webb. 2009. "Polyphosphate Remediation Technology for In-Situ Stabilization of Uranium." In Waste Management 2009: Waste Management for the Nuclear Renaissance, March 1-5, 2009, Phoenix, Arizona, Paper No. 9093. Tucson, Arizona:WM Symposia. PNNL-SA-63321.
  • Zhong L., A.T. Hart, A.T. Hart, J.E. Szecsody, Z.F. Zhang, V.L. Freedman, and M. Ankeny, et al. 2009. Research Plan: Foam Delivery of Remedial Amendments to Deep Vadose Zone for Metals and Radionuclides Remediation. PNNL-18143. Richland, WA: Pacific Northwest National Laboratory.

2008

  • Mattigod S.V., D.M. Wellman, J.N. Glovack, B.W. Arey, and M.I. Wood. 2008. "Meta-Autunite Solubility as Related to Uranium Minerals in Concrete Waste Forms." In Actinides 2008 - Basic Science, Applications and Technology, Materials Research Society Proceedings, edited by B. Chung, et al, 1104, 195-201. Warrendale, Pennsylvania:Materials Research Society. PNNL-SA-60653.
  • Mattigod S.V., D.M. Wellman, K.E. Parker, E.A. Cordova, K.M. Gunderson, S.R. Baum, and J.V. Crum, et al. 2008. Preparation and Characterization of Chemical Plugs Based on Selected Hanford Waste Simulants. PNNL-17758. Richland, WA: Pacific Northwest National Laboratory.
  • Vermeul V.R., J.S. Fruchter, B.G. Fritz, R.D. Mackley, D.M. Wellman, and M.D. Williams. 2008. "In-Situ Uranium Stabilization Through Polyphosphate Injection: Pilot-Scale Treatability Test at the 300 Area, Hanford Site - 8187." In Waste Management 2008: HLW, TRU, LLW/ILW, Mixed, Hazardous Wastes & Environmental Management, 1-13. Tucson, Arizona:Arizona Board of Regent. PNNL-SA-58147.
  • Wellman D.M., A.P. Gamerdinger, D.I. Kaplan, and R.J. Serne. 2008. "Effect of Particle-Scale Heterogeneity on Uranium(VI) Transport in Unsaturated Porous Media." Vadose Zone Journal 7, no. 1:67-78. PNNL-SA-54849. doi:10.2136/vzj2007.0076
  • Wellman D.M., C.C. Bovaird, S.V. Mattigod, K.E. Parker, R.M. Ermi, and M.I. Wood. 2008. Effect of Concrete Wasteform Properties on Radionuclide Migration. PNNL-17808. Richland, WA: Pacific Northwest National Laboratory.
  • Wellman D.M., E.M. Pierce, D.H. Bacon, M. Oostrom, K.M. Gunderson, S.M. Webb, and C.C. Bovaird, et al. 2008. 300 Area Treatability Test: Laboratory Development of Polyphosphate Remediation Technology for In Situ Treatment of Uranium Contamination in the Vadose Zone and Capillary Fringe. PNNL-17818. Richland, WA: Pacific Northwest National Laboratory.
  • Wellman D.M., E.M. Pierce, E.L. Richards, J.S. Fruchter, and V.R. Vermeul. 2008. "Uranium Plume Treatability Demonstration at the Hanford Site 300 Area: Development of Polyphosphate Remediation Technology for In-Situ Stabilization of Uranium - 8070." In Waste Management 2008: HLW, TRU, LLW/ILW, Mixed, Hazardous Wastes & Environmental Management, 1-15. Tucson, Arizona:Arizona Board of Regents. PNNL-SA-58059.
  • Wellman D.M., E.M. Pierce, V.R. Vermeul, S.V. Mattigod, E.L. Richards, M.D. Williams, and J.S. Fruchter, et al. 2008. "In Situ Uranium Stabilization through Polyphosphate Remediation: Development and Demonstration at the Hanford Site 300 Area, Washington State." In Waste Management Research Trends, edited by Toma Golush. 25-103. New York, New York:Nova Science Publishers, Inc. PNNL-SA-57789.
  • Wellman D.M., J.M. Zachara, C. Liu, N. Qafoku, S.C. Smith, and S.W. Forrester. 2008. "Advective Desorption of Uranium (VI) from Contaminated Hanford Vadose Zone Sediments under Saturated and Unsaturated Conditions." Vadose Zone Journal 7, no. 4:1144-1159. PNNL-SA-60268. doi:10.2136/vzj2007.0166
  • Wellman D.M., J.N. Glovack, K.E. Parker, E.L. Richards, and E.M. Pierce. 2008. "Sequestration and Retention of Uranium (VI) in the Presence of Hydroxylapatite under Dynamic Geochemical Conditions." Environmental Chemistry 5, no. 1:40-50. PNNL-SA-55035. doi:10.1071/EN07060
  • Wellman D.M., J.S. Fruchter, V.R. Vermeul, and M.D. Williams. 2008. Challenges Associated with Apatite Remediation of Uranium in the 300 Area Aquifer. PNNL-17480. Richland, WA: Pacific Northwest National Laboratory.
  • Wellman D.M., K.E. Parker, L. Powers, G.A. Whyatt, L.N. Clayton, S.V. Mattigod, and M.I. Wood. 2008. "Effect of Iron and Carbonation of the Diffusion of Iodine and Rhenium in Waste Encasement Concrete and Soil Fill Material under Hydraulically Unsaturated Conditions." Applied Geochemistry 23. PNNL-SA-53564. doi:doi:10.1016/j.apgeochem.2008.04.002
  • Wellman D.M., K.E. Parker, S.V. Mattigod, and G.E. Fryxell. 2008. "Effect of Incorporating Nanoporous Metal Phosphate Materials on the Compressive Strength of Portland Cement." Research Letters in Materials Science 2008. PNNL-SA-48899. doi:10.1155/2008/238736
  • Wellman D.M., S.V. Mattigod, L. Powers, K.E. Parker, L.N. Clayton, and M.I. Wood. 2008. Concrete Property and Radionuclide Migration Tests. PNNL-17676. Richland, WA: Pacific Northwest National Laboratory.

2007

  • Lodge A.M., E.M. Pierce, D.M. Wellman, and E.A. Cordova. 2007. "Effect of pH on the dissolution kinetics of zero-valent iron in the presence of EDDHA and EDTA." In Preprints of extended abstracts presented at the 233rd ACS National Meeting, American Chemical Society, Division of Environmental Chemistry, edited by G. Coimbatore, 47, 101-109. Washington, D.C., District Of Columbia:American Chemical Spciety, Division of Environmental Chemistry. PNNL-SA-57100.
  • Pierce E.M., D.M. Wellman, A.M. Lodge, and E.A. Rodriguez. 2007. "Experimental Determination of the Dissolution Kinetics of Zero-Valent Iron in the Presence of Organic Complexants." Environmental Chemistry 4, no. 4:260-270. PNNL-SA-51341. doi:10.1071/EN07004
  • Thompson K.M., S.W. Petersen, J.S. Fruchter, C.C. Ainsworth, V.R. Vermeul, D.M. Wellman, and J.E. Szecsody, et al. 2007. "Supplemental Groundwater Remediation Technologies to Protect the Columbia River at Hanford, WA." In Waste management symposium 2007 : Global Accomplishments in Environmental and Radioactive Waste Management - Education and Opportunity for the Next Generation of Waste Management Professionals : February 25 March 1, 2007, Tucson, Arizona. Tucson, Arizona:Waste Management Symposia. PNNL-SA-53193.
  • Vermeul V.R., M.D. Williams, B.G. Fritz, R.D. Mackley, D.P. Mendoza, D.R. Newcomer, and M.L. Rockhold, et al. 2007. Treatability Test Plan for 300 Area Uranium Stabilization through Polyphosphate Injection. PNNL-16571. Richland, WA: Pacific Northwest National Laboratory.
  • Wellman D.M., E.M. Pierce, and M.M. Valenta. 2007. "Efficacy of soluble sodium tripolyphosphate amendments for the in-situ immobilisation of uranium." Environmental Chemistry 4. PNNL-SA-53563.
  • Wellman D.M., E.M. Pierce, E.L. Richards, B.C. Butler, K.E. Parker, J.N. Glovack, and S.D. Burton, et al. 2007. Interim Report: Uranium Stabilization Through Polyphosphate Injection - 300 Area Uranium Plume Treatability Demonstration Project. PNNL-16683. Richland, WA: Pacific Northwest National Laboratory.
  • Wellman D.M., E.M. Pierce, M. Oostrom, and J.S. Fruchter. 2007. Experimental Plan: 300 Area Treatability Test: In Situ Treatment of the Vadose Zone and Smear Zone Uranium Contamination by Polyphosphate Infiltration. PNNL-16823. Richland, WA: Pacific Northwest National Laboratory.
  • Wellman D.M., K.M. Gunderson, J.P. Icenhower, and S.W. Forrester. 2007. "Dissolution Kinetics of Synthetic and Natural Meta-Autunite Minerals, X3?n?n??[(UO2)(PO4)]2 ? xH2O, Under Acidic Conditions." Geochemistry, Geophysics, Geosystems. G3 8. PNNL-SA-46875. doi:10.1029/2007GC001695
  • Wellman D.M., R.G. Riley, E.A. Cordova, K.E. Parker, and A.V. Mitroshkov. 2007. Carbon Tetrachloride Partition Coefficients Measured by Aqueous Sorption to Hanford Sediments from Operable Units 200-UP-1 and 200-ZP-1. PNNL-16100 Rev. 1. Richland, WA: Pacific Northwest National Laboratory.
  • Wellman D.M., S.V. Mattigod, B.W. Arey, M.I. Wood, and S.W. Forrester. 2007. "Experimental Limitations Regarding the Formation and Characterization of Uranium-Mineral Phases in Concrete Waste Forms." Cement and Concrete Research 37, no. 2:151-160. PNNL-SA-47169.

2006

  • Bacon D.H., E.M. Pierce, D.M. Wellman, D.M. Strachan, and G.B. Josephson. 2006. Corrosion of Metal Inclusions In Bulk Vitrification Waste Packages. PNNL-15947. Richland, WA: Pacific Northwest National Laboratory.
  • Pierce E.M., B.P. McGrail, L.M. Bagaasen, E.A. Rodriguez, D.M. Wellman, K.N. Geiszler, and S.R. Baum, et al. 2006. Laboratory Testing of Bulk Vitrified Low-Activity Waste Forms to Support the 2005 Integrated Disposal Facility Performance Assessment. PNNL-15126 Rev. 2. Richland, WA: Pacific Northwest National Laboratory.
  • Vermeul V.R., J.S. Fruchter, D.M. Wellman, B.A. Williams, and M.D. Williams. 2006. Site Characterization Plan: Uranium Stabilization through Polyphosphate Injection. PNNL-16008. Richland, WA: Pacific Northwest National Laboratory.
  • Wellman D.M., J.P. Icenhower, A.P. Gamerdinger, and S.W. Forrester. 2006. "Effects of pH, temperature, and aqueous organic material on the dissolution kinetics of meta-autunite minerals, (Na, Ca)2-1[(UO2)(PO4)]2 ? 3H2O." The American Mineralogist 91, no. 1:143-158. PNNL-SA-42231.
  • Wellman D.M., J.P. Icenhower, and A.T. Owen. 2006. "Comparative Analysis of Soluble Phosphate Amendments for the Remediation of Heavy Metal Contaminants: Effect on Sediment Hydraulic Conductivity." Environmental Chemistry 3, no. 3:219-224. PNNL-SA-44734. doi:10.1071/EN05023
  • Wellman D.M., J.S. Fruchter, and V.R. Vermeul. 2006. Experimental Plan: Uranium Stabilization Through Polyphosphate Injection 300 Area Uranium Plume Treatability Demonstration Project. PNNL-16101. Richland, WA: Pacific Northwest National Laboratory.
  • Wellman D.M., R.G. Riley, K.E. Parker, and A.V. Mitroshkov. 2006. Adsorption of Carbon Tetrachloride to Sediments from the UP-1 Operable Unit. PNNL-16100. Richland, WA: Pacific Northwest National Laboratory.
  • Wellman D.M., S.V. Mattigod, G.A. Whyatt, L. Powers, K.E. Parker, and M.I. Wood. 2006. Diffusion of Iodine and Rhenium in Category 3 Waste Encasement Concrete and Soil Fill Material. PNNL-16268. Richland, WA: Pacific Northwest National Laboratory.
  • Wellman D.M., S.V. Mattigod, K.E. Parker, S.M. Heald, C.M. Wang, and G.E. Fryxell. 2006. "Synthesis of organically templated nanoporous tin (II/IV) phosphate for radionuclide and metal sequestration." Inorganic Chemistry 45, no. 6:2382-2384. PNNL-SA-46789. doi:10.1021/ic051949v

2005

  • Pierce E.M., B.P. McGrail, L.M. Bagaasen, E.A. Rodriguez, D.M. Wellman, K.N. Geiszler, and S.R. Baum, et al. 2005. Laboratory Testing of Bulk Vitrified Low-Activity Waste Forms to Support the 2005 Integrated Disposal Facility Performance Assessment. PNNL-15126 Rev. 1. Richland, WA: Pacific Northwest National Laboratory.
  • Pierce E.M., B.P. McGrail, L.M. Bagaasen, E.A. Rodriguez, D.M. Wellman, K.N. Geiszler, and S.R. Baum, et al. 2005. Laboratory Testing of Bulk Vitrified Low-Activity Waste Forms to Support the 2005 Integrated Disposal Facility Performance Assessment. PNNL-15126. Richland, WA: Pacific Northwest National Laboratory.
  • Wellman D.M., J.G. Catalano, J.P. Icenhower, and A.P. Gamerdinger. 2005. "Synthesis and Characterization of Sodium meta-Autunite, Na[UO2PO4] - 3H2O." Radiochimica Acta 93, no. 7:393-399. PNNL-SA-41973.
  • Wellman D.M., J.P. Icenhower, and W.J. Weber. 2005. "Elemental Dissolution Study of Pu-Bearing Borosilicate Glasses." Journal of Nuclear Materials 340, no. 2-3:149-162. PNNL-SA-41558.
  • Wellman D.M., J.P. Icenhower, E.M. Pierce, B.K. McNamara, S.D. Burton, K.N. Geiszler, and S.R. Baum, et al. 2005. "Polyphosphate Amendments for In-Situ Immobilization of Uranium Plumes." In Third International Conference on Remediation of Contaminated Sediments, edited by R.F. Olfenbuttel and P.J. White, 3. Columbus, Ohio:Battelle Press. PNNL-SA-43638.
  • Zachara J.M., J.A. Davis, C. Liu, J.P. McKinley, N. Qafoku, D.M. Wellman, and S.B. Yabusaki. 2005. Uranium Geochemistry in Vadose Zone and Aquifer Sediments from the 300 Area Uranium Plume. PNNL-15121. Richland, WA: Pacific Northwest National Laboratory.

2004

  • Pierce E.M., B.P. McGrail, L.M. Bagaasen, D.M. Wellman, J.V. Crum, K.N. Geiszler, and S.R. Baum. 2004. Progress Report on the Laboratory Testing of the Bulk Vitrification Cast Refractory. PNNL-14935. Richland, WA: Pacific Northwest National Laboratory.
  • Wellman D.M., and J.P. Icenhower. 2004. "EFFECTS OF pH, TEMPERATURE AND AQUEOUS ORGANIC MATERIAL ON THE RELEASE URANIUM FROM URANYL-PHOSPHATE MINERALS." In 228th ACS National Meeting, 44, 1139-1146. Cape Girardeau, Missouri:American Chemical Society, Division of Environmental Chemistry. PNNL-SA-41674.

2003

  • McGrail B.P., E.M. Pierce, H.T. Schaef, E.A. Rodriguez, J.L. Steele, A.T. Owen, and D.M. Wellman. 2003. Laboratory Testing of Bulk Vitrified and Steam Reformed Low-Activity Waste Forms to Support A Preliminary Risk Assessment for an Integrated Disposal Facility. PNNL-14414. Richland, WA: Pacific Northwest National Laboratory.

2001

  • Gamerdinger A.P., D.I. Kaplan, D.M. Wellman, and R.J. Serne. 2001. "Two-region flow and decreased sorption of uranium (VI) during transport in Hanford groundwater and unsaturated sands." Water Resources Research 37, no. 12:3155-3162. PNNL-SA-31685.

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