Mark Rockhold
Pacific Northwest National Laboratory
PO Box 999
Richland, WA 99352
Mark.Rockhold@pnl.gov
Research Interests
- Physical, chemical, and biological processes and interactions in soils and groundwater
- Surface and interfacial phenomena
- Development and application of numerical flow and transport models
- Reactive transport modeling
- Parameterization methods for field-scale applications of flow and transport models in heterogeneous, variably saturated porous media
- Stochastic and conditional simulation methods
- Geostatistics
- Uncertainty analysis
Education and Credentials
- Ph.D., Bioresource Engineering (Water Resources), Oregon State University, 2002
- M.S., Agronomy (Soil Physics), Kansas State University, 1988
- B.S., Geology, Kansas State University, 1984
Affiliations and Professional Service
- Member of the American Geophysical Union (AGU)
- Soil Science Society of America
- Reviewer for Water Resources Research, Advances in Water Resources, Vadose Zone Journal, Soil Science Society of America Journal, Journal of Environmental Quality, Hydrogeology Journal
Awards and Recognitions
- 2001 Outstanding Student Paper Award, AGU Hydrol. Section, Fall Meeting, San Francisco, CA
- 1999 Myron G. Cropsey Agricultural Engineering Scholarship, Dept. of Bioengineering, OSU
- Sigma Gamma Epsilon – Honorary Earth Science Society
Selected Publications
2009
- Last GV, ML Rockhold, CJ Murray, and KJ Cantrell. 2009. Selection and Traceability of Parameters To Support Hanford-Specific RESRAD Analyses -- Fiscal Year 2008 Status Report . PNNL-18564, Pacific Northwest National Laboratory, Richland, WA.
- Vermeul VR, BN Bjornstad, BG Fritz, JS Fruchter, RD Mackley, DR Newcomer, DP Mendoza, ML Rockhold, DM Wellman, and MD Williams. 2009. 300 Area Uranium Stabilization Through Polyphosphate Injection: Final Report. PNNL-18529, Pacific Northwest National Laboratory, Richland, WA.
2008
- Meyer PD, M Ye, SP Neuman, and ML Rockhold. 2008. "Application of Maximum Likelihood Bayesian Model Averaging to Groundwater Flow and Transport at the Hanford Site 300 Area." In Calibration and Reliability in Groundwater Modelling: Credibility of Modelling: Proceedings of ModelCARE 2007 Conference, pp. 64-69. International Association of Hydrological Sciences, Oxfordshire, United Kingdom.
- Nichols WE, ML Rockhold, and JL Downs. 2008. Compendium of Data for the Hanford Site (Fiscal Years 2004 to 2008) Applicable to Estimation of Recharge Rates. PNNL-17841, Pacific Northwest National Laboratory, Richland, WA.
- Peterson RE, ML Rockhold, RJ Serne, PD Thorne, and MD Williams. 2008. Uranium Contamination in the Subsurface Beneath the 300 Area, Hanford Site, Washington. PNNL-17034, Pacific Northwest National Laboratory, Richland, WA.
- Szecsody JE, JS Fruchter, CA Burns, ML Rockhold, M Oostrom, MD Williams, and VR Vermeul. 2008. "Sr-90 Immobilization by Infiltration of a Ca-Citrate-PO4 Solution into the Hanford 100-N Area Vadose Zone." In Waste Management 2008: HLW, TRU, LLW/ILW, Mixed, Hazardous Wastes & Environmental Management, p. Art. # 8141. Arizona Board of Regents, Tucson, AZ.
- White MD, M Oostrom, ML Rockhold, and M Rosing. 2008. "Scalable Modeling of Carbon Tetrachloride Migration at the Hanford Site Using the STOMP Simulator." Vadose Zone Journal 7(2):654-666. doi:10.2136/vzj2007.0070
2007
- Gee GW, M Oostrom, MD Freshley, ML Rockhold, and JM Zachara. 2007. "Hanford Site Vadose-Zone Studies: An Overview." Vadose Zone Journal 6(4):899-905. doi:10.2136/vzj2006.0179
- Knight RJ, JD Irving, P Tercier, EJ Freeman, CJ Murray, and ML Rockhold. 2007. "A Comparison of the Use of Radar Images and Neutron Probe Data to Determine the Horizontal Correlation Length of Water Content ." In Subsurface Hydrology: Data Integration for Properties and Processes: Geophysical Monograph Series, vol. 171, ed. David W. Hyndman, Frederick D. Day-Lewis, Kamini Singha, pp. 31-44. American Geophysical Union, Washington, DC.
- Last GV, CJ Murray, DA Bush, EC Sullivan, ML Rockhold, RD Mackley, and BN Bjornstad. 2007. "Standardization of Borehole Data to Support Vadose Zone Flow and Transport Modeling." Vadose Zone Journal 6(4):906-912. doi:10.2136/vzj2006.0175
- Meyer PD, M Ye, ML Rockhold, SP Neuman, and KJ Cantrell. 2007. Combined Estimation of Hydrogeologic Conceptual Model, Parameter, and Scenario Uncertainty with Application to Uranium Transport at the Hanford Site 300 Area. NUREG/CR-6940; PNNL-16396, Pacific Northwest National Laboratory, Richland, WA.
- Oostrom M, ML Rockhold, PD Thorne, MJ Truex, GV Last, and VJ Rohay. 2007. "Carbon Tetrachloride Flow and Transport in the Subsurface of the 216-Z-9 Trench at the Hanford Site." Vadose Zone Journal 6(4):971-984. doi:10.2136/vzj2006.0166
- Vermeul VR, MD Williams, BG Fritz, RD Mackley, DP Mendoza, DR Newcomer, ML Rockhold, BA Williams, and DM Wellman. 2007. Treatability Test Plan for 300 Area Uranium Stabilization through Polyphosphate Injection. PNNL-16571, Pacific Northwest National Laboratory, Richland, WA.
- Williams BA, CF Brown, W Um, MJ Nimmons, RE Peterson, BN Bjornstad, DC Lanigan, RJ Serne, FA Spane, and ML Rockhold. 2007. Limited Field Investigation Report for Uranium Contamination in the 300 Area, 300-FF-5 Operable Unit, Hanford Site, Washington. PNNL-16435, Pacific Northwest National Laboratory, Richland, WA.
2006
- Meyer PD, M Ye, SP Neuman, ML Rockhold, KJ Cantrell, and TJ Nicholson. 2006. "Combined Estimation of Hydrogeologic Conceptual Model, Parameter, and Scenario Uncertainty." In Proceedings of the 3rd Federal Interagency Hydrologic Modeling Conference. USGS Water Information Coordination Program Subcommittee on Hydrology, Washington D.C..
- Oostrom M, ML Rockhold, PD Thorne, GV Last, and MJ Truex. 2006. Carbon Tetrachloride Flow and Transport in the Subsurface of the 216-Z-18 Crib and 216-Z-1A Tile Field at the Hanford Site: Multifluid Flow Simulations and Conceptual Model Update. PNNL-16198, Pacific Northwest National Laboratory, Richland, WA.
- Williams BA, BN Bjornstad, DC Lanigan, JM Keller, and ML Rockhold. 2006. Borehole Data Package for One CY 2005 CERCLA Well 699-S20-E10, 300-FF-5 Operable Unit, Hanford Site, Washington. PNNL-15417, Pacific Northwest National Laboratory, Richland, WA.
2005
- Rockhold ML, RR Yarwood, MR Niemet, PJ Bottomley, and JS Selker. 2005. "Experimental observations and numerical modeling of coupled microbial and transport processes in variably saturated sand." Vadose Zone Journal 4(2):407-417. doi:10.2136/vzj2004.0087
- Szecsody JE, JS Fruchter, JL Phillips, ML Rockhold, VR Vermeul, MD Williams, BJ Devary, and Y Liu. 2005. Effect of Geochemical and Physical Heterogeneity on the Hanford 100D Area In Situ Redox Manipulation Barrier Longevity . PNNL-15499 Rev. 1, Pacific Northwest National Laboratory, Richland, WA.
- Szecsody JE, VR Vermeul, JS Fruchter, MD Williams, JL Phillips, BJ Devary, ML Rockhold, and Y Liu. 2005. Effect of Geochemical and Physical Heterogeneity on the Hanford 100D Area In Situ Redox Manipulation Barrier Longevity . PNNL-15499, Pacific Northwest National Laboratory, Richland, WA.
2004
- Rockhold ML, RR Yarwood, and JS Selker. 2004. "Coupled Microbial and Transport Processes in soils." Vadose Zone Journal 3(2):368-383.
- Brockman FJ, JS Selker, and ML Rockhold. 2004. Integrated Field, Laboratory, and Modeling Studies to Determine the Effects of Linked Microbial and Physical Spatial Heterogeneity on Engineered Vadose Zone Bioremediation. PNNL-14535, Pacific Northwest National Laboratory, Richland, WA.
- Oostrom M, ML Rockhold, PD Thorne, GV Last, and MJ Truex. 2004. Three-Dimensional Modeling of DNAPL in the Subsurface of the 216-Z-9 Trench at the Hanford Site . PNNL-14895, Pacific Northwest National Laboratory, Richland, WA.
- Rockhold ML, MD White, and EJ Freeman. 2004. Canyon Disposal Initiative - Numerical Modeling of Contaminant Transport from Grouted Residual Waste in the 221-U Facility (U Plant). PNNL-14908, Pacific Northwest National Laboratory, Richland, WA.
- Weisbrod N, MR Niemet, ML Rockhold, TD Mcginnis, and JS Selker. 2004. "Migration of saline solutions in variably saturated porous media." Journal of Contaminant Hydrology 72:109-133.
2003
- Chen G, ML Rockhold, and KA Strevett. 2003. "Equilibrium and Kinetic Adsorption of Bacteria on Alluvial Sand and Surface Thermodynamic Interpretation." Research in Microbiology 154:175-181.
2002
- Yarwood R, ML Rockhold, M Niemet, JS Selker, and PJ Bottomley. 2002. "Noninvasive Quantitative Measurement of Bacterial Growth in Porous Media Under Unsaturated-Flow Conditions." Applied and Environmental Microbiology 68(7):3597-3605.
1999
- Meyer PD, GW Gee, and ML Rockhold. 1999. "Characterization of Soil Hydraulic Parameter Uncertainty." In Proceedings of the International Workshop on Characterization and Measurement of the Hydraulic Properties of Unsaturated Porous Media. Oct. 22-24, 1997, ed. M. Th. van Genuchten F. J. Leij and L. Wu, pp. 1439-1451. U.C. Riverside Press, Riverside, CA.
- Rockhold ML, CJ Murray, and MJ Fayer. 1999. "Conditional simulation and upscaling of soil hydraulic properties." In Characterization and Measurement of the Hydraulic Properties of Unsaturated Porous Media, vol. 2, ed. M. Th. van Genuchten, F. J. Leij, and L. Wu, pp. 1391-1401. University of California Press, Riverside, CA.