Rob Mackley

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Biography

Rob has been with PNNL since 2004. His career has focused around the technical areas of groundwater and remediation monitoring, remedy development and implementation, and hydrogeologic characterization. He specializes in aquifer hydraulic testing, advanced groundwater and vadose zone monitoring instrumentation, and remedy performance monitoring and evaluation.

One of his favorite areas of research is the interaction of surface and groundwater. Rob has provided technical oversight of groundwater, surface water, and subsurface sediment sampling. He has overseen the drilling, design, and completion of groundwater wells. He also enjoys software programming and working with lab and field instrumentation. He is the proud father of four boys. He enjoys coaching them in sports and exposing them to the adventures of the outdoors.

Research Interests

Groundwater-surface water interaction
Hydrogeologic characterization
Aquifer and well testing
Groundwater remediation
Environmental monitoring
Sensors and field instrumentation

Education and Credentials

M.S., Geology, Utah State University, 2005
B.S., Geology, Utah State University, 2001

Awards and Recognitions

PNNL Outstanding Performance Award, 2005, 2006, 2007, 2012

PNNL Publications

2023

Song X., H. Ren, Z. Hou, X. Lin, M. Karanovic, M.J. Tonkin, and V.L. Freedman, et al. 2023. "Predicting Future Well Performance for Environmental Remediation Design using Deep Learning." Journal of Hydrology 617, no. Part C:Art. No. 129110. PNNL-SA-178074. doi:10.1016/j.jhydrol.2023.129110

2021

Mackley R.D., J.M. Torgeson, J.L. Robinson, N. Qafoku, M.L. Rockhold, and J.N. Thomle. 2021. Evaluation of a Potential Groundwater Tracer Test in the Ringold Upper Mud Aquifer at the 100-H Area of the Hanford Site. PNNL-32103. Richland, WA: Pacific Northwest National Laboratory. Evaluation of a Potential Groundwater Tracer Test in the Ringold Upper Mud Aquifer at the 100-H Area of the Hanford Site
Szecsody J.E., N. Qafoku, A.R. Lawter, R.D. Mackley, H.P. Emerson, and C.T. Resch. 2021. Laboratory Evaluation to Increase Effectiveness of Field-Scale Soil Flushing in the Hanford 100 Areas. PNNL-31980. Richland, WA: Pacific Northwest National Laboratory. Laboratory Evaluation to Increase Effectiveness of Field-Scale Soil Flushing in the Hanford 100 Areas

2020

Mackley R.D., V.A. Garayburu-Caruso, V.L. Freedman, and K.M. Engbrecht. 2020. Hydrologic Evaluation of the Ringold Upper Mud Aquifer in the 100-H Area of the Hanford Site. PNNL-30467. Richland, WA: Pacific Northwest National Laboratory. Hydrologic Evaluation of the Ringold Upper Mud Aquifer in the 100-H Area of the Hanford Site
Robinson J.L., R.D. Mackley, M.L. Rockhold, T.C. Johnson, J.N. Thomle, C.D. Johnson, and P. Jaysaval. 2020. Geophysical Methods for Stratigraphic Identification. PNNL-29182 Rev 1.0. Richland, WA: Pacific Northwest National Laboratory. Geophysical Methods for Stratigraphic Identification
Rockhold M.L., X. Song, Z. Zhang, N. Qafoku, M.A. Jensen, J.L. Downs, and J.D. Tagestad, et al. 2020. Spatiotemporal Analyses of Groundwater and Shoreline Cr(VI) Concentrations in the 100 Areas at Hanford. PNNL-30483. Richland, WA: Pacific Northwest National Laboratory. Spatiotemporal Analyses of Groundwater and Shoreline Cr(VI) Concentrations in the 100 Areas at Hanford
Szecsody J.E., C.E. Bagwell, R.D. Mackley, and S.D. Hoyle. 2020. Evaluation of Ammonia Discharge into PUREX Crib 216-A-37-1 and Nitrogen Species Fate in the Subsurface. PNNL-29999. Richland, WA: Pacific Northwest National Laboratory. Evaluation of Ammonia Discharge into PUREX Crib 216-A-37-1 and Nitrogen Species Fate in the Subsurface
Szecsody J.E., H.P. Emerson, R.D. Mackley, C.T. Resch, B.N. Gartman, C.I. Pearce, and S.A. Saslow, et al. 2020. Evaluation of the Change in Uranium Mobility in Sediments from the Hanford 300-FF-5 Stage B Polyphosphate Field Injection. PNNL-29650. Richland, WA: Pacific Northwest National Laboratory. Evaluation of the Change in Uranium Mobility in Sediments from the Hanford 300-FF-5 Stage B Polyphosphate Field Injection

2019

Hou Z., T.D. Scheibe, C.J. Murray, W.A. Perkins, E.V. Arntzen, H. Ren, and R.D. Mackley, et al. 2019. "Identification and mapping of riverbed sediment facies in the Columbia River through integration of field observations and numerical simulations." Hydrological Processes 33, no. 8:1245-1259. PNNL-SA-123667. doi:10.1002/hyp.13396
Johnson T.C., J.N. Thomle, J.L. Robinson, R.D. Mackley, and M.J. Truex. 2019. Stage B Uranium Sequestration Amendment Delivery Monitoring Using Time-Lapse Electrical Resistivity Tomography. PNNL-28619. Richland, WA: Pacific Northwest National Laboratory. Stage B Uranium Sequestration Amendment Delivery Monitoring Using Time-Lapse Electrical Resistivity Tomography
Johnson T.C., M.J. Truex, J.N. Thomle, R.D. Mackley, S.D. Springer, S. Mehta, and D.J. Becker, et al. 2019. "Integration of Real-Time Geophysical Monitoring with In Situ Uranium Remedy Implementation." In Proceedings of the 45th Annual Waste Management Conference (WM2019): Encouraging Young Men & Women to Achieve Their Goals in Radwaste Management, March 3-7 2019, Phoenix, AZ, Paper No. 19094. Tempe, Arizona:WM Symposia. PNNL-SA-139290.
Robinson J.L., R.D. Mackley, M.L. Rockhold, T.C. Johnson, and P. Jaysaval. 2019. Geophysical Methods for Stratigraphic Identification. PNNL-29182. Richland, WA: Pacific Northwest National Laboratory. Geophysical Methods for Stratigraphic Identification

2018

Strickland C.E., M.J. Truex, R.D. Mackley, and T.C. Johnson. 2018. Deep Vadose Zone Monitoring Strategy for the Hanford Central Plateau. PNNL-28031. Richland, WA: Pacific Northwest National Laboratory. Deep Vadose Zone Monitoring Strategy for the Hanford Central Plateau
Strickland C.E., R.D. Mackley, V.R. Vermeul, R.E. Clayton, J.N. Thomle, and B.Q. Roberts. 2018. Advanced Monitoring Systems for Deep Vadose Zone Applications Interim Status Report. PNNL-28038. Richland, WA: Pacific Northwest National Laboratory. Advanced Monitoring Systems for Deep Vadose Zone Applications Interim Status Report

2017

Zhou T., M. Huang, J. Bao, Z. Hou, E.V. Arntzen, R.D. Mackley, and A.R. Crump, et al. 2017. "A New Approach to Quantify Shallow Water Hydrologic Exchanges in a Large Regulated River Reach." Water 9, no. 9:703. PNNL-SA-123562. doi:10.3390/w9090703

2016

Fritz B.G., R.D. Mackley, and E.V. Arntzen. 2016. "Conducting Slug Tests in Mini-Piezometers." Groundwater 54, no. 2:291-295. PNNL-SA-105423. doi:10.1111/gwat.12335
Olsen K.B., R.R. Kirkham, V.T. Woods, D.A. Haas, J.C. Hayes, T.W. Bowyer, and D.P. Mendoza, et al. 2016. "Noble Gas Migration Experiment to Support the Detection of Underground Nuclear Explosions." Journal of Radioanalytical and Nuclear Chemistry 307, no. 3:2603-2610. PNNL-SA-109064. doi:10.1007/s10967-015-4639-7

2015

Mackley R.D., D.M. Anderson, J.N. Thomle, and C.E. Strickland. 2015. Technical and Economic Assessment of Solar Photovoltaic for Groundwater Extraction on the Hanford Site. PNNL-24741. Richland, WA: Pacific Northwest National Laboratory. Technical and Economic Assessment of Solar Photovoltaic for Groundwater Extraction on the Hanford Site
Truex M.J., V.R. Vermeul, D. Adamson, M. Oostrom, L. Zhong, R.D. Mackley, and B.G. Fritz, et al. 2015. "Field Test of Enhanced Remedial Amendment Delivery Using a Shear-Thinning Fluid." Groundwater Monitoring and Remediation 35, no. 3:34-45. PNNL-SA-101736. doi:10.1111/gwmr.12101

2014

Vermeul V.R., C.E. Strickland, P.D. Thorne, B.N. Bjornstad, R.D. Mackley, M.E. Kelley, and E.C. Sullivan, et al. 2014. "FutureGen 2.0 Monitoring Program: An Overview of the Monitoring Approach and Technologies Selected for Implementation." Energy Procedia 63. PNWD-SA-10395. doi:10.1016/j.egypro.2014.11.438

2013

Carroll K.C., M.J. Truex, M.L. Brusseau, K.R. Parker, R.D. Mackley, and V.J. Rohay. 2013. "Characterization of Persistent Volatile Contaminant Sources in the Vadose Zone." Groundwater Monitoring and Remediation 33, no. 2:68-84. PNNL-SA-89088. doi:10.1111/gwmr.12006
Freedman V.L., R.D. Mackley, S.R. Waichler, and J.A. Horner. 2013. "Evaluation of Analytical and Numerical Techniques for Defining the Radius of Influence for an Open-Loop Ground Source Heat Pump System." Journal of Hydrologic Engineering 18, no. 9:1170-1179. PNNL-SA-84739. doi:10.1061/(ASCE)HE.1943-5584.0000720

2012

Freedman V.L., S.R. Waichler, R.D. Mackley, and J.A. Horner. 2012. "Assessing the Thermal Environmental Impacts of an Groundwater Heat Pump in Southeastern Washington State." Geothermics 42. PNNL-SA-76515. doi:10.1016/j.geothermics.2011.10.004
Truex M.J., K.C. Carroll, V.J. Rohay, R.D. Mackley, and K.R. Parker. 2012. Treatability Test Report: Characterization of Vadose Zone Carbon Tetrachloride Source Strength Using Tomographic Methods at the 216-Z-9 Site. PNNL-21326. Richland, WA: Pacific Northwest National Laboratory. Treatability Test Report: Characterization of Vadose Zone Carbon Tetrachloride Source Strength Using Tomographic Methods at the 216-Z-9 Site
Truex M.J., V.R. Vermeul, B.G. Fritz, R.D. Mackley, J.A. Horner, C.D. Johnson, and D.R. Newcomer. 2012. Investigation of Hexavalent Chromium Flux to Groundwater at the 100-C-7:1 Excavation Site. PNNL-21845; RPT-DVZ-AFRI-005. Richland, WA: Pacific Northwest National Laboratory. Investigation of Hexavalent Chromium Flux to Groundwater at the 100-C-7:1 Excavation Site

2011

Fritz B.G., and R.D. Mackley. 2011. "Author's Reply: Discussion on 'A wet/wet differential pressure sensor for measuring vertical hydraulic gradient'." Groundwater 49, no. 6:782. PNNL-SA-74887. doi:10.1111/j.1745-6584.2011.00801.x
Spane F.A., and R.D. Mackley. 2011. "Removal of River-Stage Fluctuations from Well Response Using Multiple-Regression." Groundwater 49, no. 6:794-807. PNNL-SA-74458. doi:10.1111/j.1745-6584.2010.00780.x
Truex M.J., T. Macbeth, V.R. Vermeul, B.G. Fritz, D.P. Mendoza, R.D. Mackley, and T.W. Wietsma, et al. 2011. "Demonstration of Combined Zero-Valent Iron and Electrical Resistance Heating for In Situ Trichloroethene Remediation." Environmental Science & Technology 45, no. 12:5346-5351. PNNL-SA-76701. doi:10.1021/es104266a
Truex M.J., V.R. Vermeul, D.P. Mendoza, B.G. Fritz, R.D. Mackley, M. Oostrom, and T.W. Wietsma, et al. 2011. "Injection of Zero Valent Iron into an Unconfined Aquifer Using Shear-Thinning Fluids." Groundwater Monitoring and Remediation 31, no. 1:50-58. PNNL-SA-70324.

2010

Mackley R.D., F.A. Spane, T.C. Pulsipher, and C.H. Allwardt. 2010. Guide to using Multiple Regression in Excel (MRCX v.1.1) for Removal of River Stage Effects from Well Water Levels. PNNL-19775 Rev. 1. Richland, WA: Pacific Northwest National Laboratory. Guide to using Multiple Regression in Excel (MRCX v.1.1) for Removal of River Stage Effects from Well Water Levels
Mackley R.D., G.V. Last, J.A. Serkowski, L.A. Middleton, and K.J. Cantrell. 2010. MinChem: A Prototype Petrologic Database for Hanford Site Sediments. PNNL-19803. Richland, WA: Pacific Northwest National Laboratory. MinChem: A Prototype Petrologic Database for Hanford Site Sediments
Vermeul V.R., J.P. McKinley, D.R. Newcomer, R.D. Mackley, and J.M. Zachara. 2010. "River-Induced Flow Dynamics in Long-Screen Wells and Impact on Aqueous Samples." Groundwater 49, no. 4:515-524. PNNL-SA-71263. doi:10.1111/j.1745-6584.2010.00769.x

2009

Truex M.J., V.R. Vermeul, B.G. Fritz, R.D. Mackley, D.P. Mendoza, R.P. Elmore, and A.V. Mitroshkov, et al. 2009. Hanford 100-D Area Biostimulation Treatability Test Results. PNNL-18784. Richland, WA: Pacific Northwest National Laboratory. Hanford 100-D Area Biostimulation Treatability Test Results
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. 300 Area Uranium Stabilization Through Polyphosphate Injection: Final Report

2008

Fritz B.G., and R.D. Mackley. 2008. "A wet/wet differential pressure sensor for measuring vertical hydraulic gradient." Ground Water 48, no. 1:117-121. PNNL-SA-63832.
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.

2007

Last G.V., C.J. Murray, D.A. Bush, E.C. Sullivan, M.L. Rockhold, R.D. Mackley, and B.N. Bjornstad. 2007. "Standardization of Borehole Data to Support Vadose Zone Flow and Transport Modeling." Vadose Zone Journal 6, no. 4:906-912. PNNL-SA-53079. doi:10.2136/vzj2006.0175