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Researcher

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Jeffrey Sondrup

Engineering Technical Operations Specialist

Research Areas:
Geological and Water Engineering

Biography:
Jeffrey Sondrup is an environmental analyst for Idaho National Laboratory. He holds a bachelor’s and master’s degree in mechanical engineering from the University of Utah and has more than 28 years of experience in environmental analysis. His expertise is in numerical modeling, hydrology, fluid dynamics and heat transfer. He routinely performs atmospheric and subsurface modeling studies supporting environmental risk and dose assessments and design of contamination remediation systems for active and inactive waste sites. He supported several CERCLA/Superfund investigations at INL, and most recently co-directed a technical team in conducting and preparing the required regulatory assessments and documentation for the INL Remote-Handled Low-Level Waste Disposal Facility. Sondrup served as INL’s technical work coordinator for EPA technical support projects involving groundwater and contaminant transport issues, and provided technical assistance to EPA on characterization and cleanup activities at more than 20 CERCLA/Superfund sites across the United States. He was a reviewer of the Infiltration Analysis and Modeling Report for the Yucca Mountain high-level waste repository application.

Education:
M.S., Mechanical Engineering - University of Utah
B.S., Mechanical Engineering - University of Utah

 
Publications:
Sondrup, A.J., A.L. Schafer, A.S. Rood, Orchard, B.O., and B.D. Welty, “Natural and Engineered Features Supporting Environmental Performance of Idaho National Laboratory’s Remote-Handled Low-Level Waste Disposal Facility,” Waste Management 2019 Symposium Proceedings, Waste Management 2019, Phoenix AZ, March 2019.

Rood, A.S., Sondrup, A.J., A.L. Schafer, Orchard, B.O., and B.D. Welty, “Technical Basis and Implementation of Groundwater Pathway Models Used for INL’s RH LLW Disposal Facility Performance Assessment,” Waste Management 2019 Symposium Proceedings, Waste Management 2019, Phoenix AZ, March 2019.

Sondrup, A.J., “Evaluation of Impacts from Radiological Air Emissions for the HALEU Environmental Assessment,” ECAR-43212, Idaho National Laboratory, Idaho Falls, ID, October 2018.

Sondrup, A.J., “Evaluation of Air Quality Impacts from Addition of Boiler 5 at Naval Reactors Facility,” ECAR-4264, Rev. 1, Idaho National Laboratory, Idaho Falls, ID, October 2018.

Sondrup, A.J., “Estimation of Dose from Potential Radionuclide Emissions from the Sample Preparation Laboratory at the Materials and Fuels Complex,” ECAR-4239, Idaho National Laboratory, Idaho Falls, ID, September 2018.

Sondrup, A.J., “Idaho National Laboratory CY-2017 National Emission Standards for Hazardous Air Pollutants (NESHAP) Analysis, Methodology and Results for Radionuclides,” Attachment to “National Emission Standards for Hazardous Air Pollutants—Calendar Year 2017 INL Report for Radionuclides,” DOE/ID-11441 (2017), Idaho National Laboratory, Idaho Falls, ID, June 2018.

Sondrup, A.J., “Groundwater Pathway Transport and Dose Calculations for the INL Remote-Handled Low Level Waste Disposal Facility Performance Assessment,” ECAR-1892, Rev. 1, Idaho National Laboratory, Idaho Falls, ID, June 2018.

Sondrup, A.J., A.L. Schafer and A.S. Rood, “Performance Assessment for the Idaho National Laboratory Remote-Handled Low-Level Waste Disposal Facility,” DOE/ID-11421, Rev. 2, U.S. Department of Energy, Idaho Operations Office, Idaho Falls, March 2018.

Sondrup, A.J., “Air Pathway Assessment for the INL Remote-Handled Low-Level Waste Disposal Project,” ECAR-1370, Rev. 2, Idaho National Laboratory, Idaho Falls, ID, February 2018.

Sondrup, A.J., “Radon Analysis for the INL Remote-Handled Low-Level Waste Disposal Facility Performance Assessment,” ECAR-2074, Rev. 1, Idaho National Laboratory, Idaho Falls, ID, February 2018.

Sondrup, A.J., “Air Dispersion Modeling and Dose Calculations for the Remote-Handled Low-Level Waste Disposal Facility Air Permit Applicability Determination,” Idaho National Laboratory, Idaho Falls, ID, January 2018.

Sondrup, A.J., “Baseline Radionuclide Inventory for the Remote-Handled Low-Level Waste Disposal Facility for Use in the Facility Performance Assessment,” ECAR-3940, Idaho National Laboratory, Idaho Falls, ID, December 2017.

Sondrup, A.J., “AERMOD Modeling of Proposed Boiler (Boiler #5) for Naval Reactors Facility at the Idaho National Laboratory,” Letter Report prepared for Battelle Energy Alliance and Naval Reactors Facility Management, Idaho National Laboratory, Idaho Falls, ID, November 2017.

Sondrup, A.J., “Assessment of Potential Dose and Environmental Impacts from Proposed Testing at the INL National Security Test Range,” ECAR-3565, Idaho National Laboratory, Idaho Falls, ID, November 2017.

Sondrup, A.J., “Assessment of Potential Dose and Environmental Impacts from Proposed Testing at the INL Radiological Response Training Range,” ECAR-3533, Rev. 1, Idaho National Laboratory, Idaho Falls, ID, November 2017.

Sondrup, A.J., M.A. Plummer and A.S. Rood, “Wastewater Effluent Release Limits for Non-Radionuclides at the Idaho National Laboratory,” ECAR-2477, Rev. 2, Idaho National Laboratory, Idaho Falls, ID, September 2017.

Sondrup, A.J., M.A. Plummer and A.S. Rood, “Wastewater Effluent Release Limits for Radionuclides at the Idaho National Laboratory,” ECAR-3607, Idaho National Laboratory, Idaho Falls, ID, August 2017.

Sondrup, A.J., “Idaho National Laboratory CY-2016 National Emission Standards for Hazardous Air Pollutants (NESHAP) Analysis, Methodology and Results for Radionuclides,” Attachment to “National Emission Standards for Hazardous Air Pollutants—Calendar Year 2016 INL Report for Radionuclides,” DOE/ID-11441 (2016), Idaho National Laboratory, Idaho Falls, ID, June 2017.

Rood, A.S. and A.J. Sondrup, “Updated Quantitative Assessment of the INL Site Ambient Air Monitoring Network using Frequency of Detection Methodology,” ECAR-3576, Idaho National Laboratory, Idaho Falls, ID, April 2017.

Mattson, E.D., and A.J. Sondrup, “Advance Test Reactor Warm Waste Pond Berm Overtopping Analysis,” Letter Report prepared for Battelle Energy Alliance Management, Idaho National Laboratory, Idaho Falls, ID, March 2017.

Sondrup, A.J., “Air Dispersion Modeling of Exhaust from the Material Recovery Pilot Plant,” Letter Report prepared for Battelle Energy Alliance Management, Idaho National Laboratory, Idaho Falls, ID, November 2016.

Sondrup, A.J., “AERMOD Screening Dispersion Factors for INL Facilities,” ECAR-2078, Idaho National Laboratory, Idaho Falls, ID, June 2016.

Sondrup, A.J., “Idaho National Laboratory CY-2015 National Emission Standards for Hazardous Air Pollutants (NESHAP) Analysis, Methodology and Results for Radionuclides,” Attachment to “National Emission Standards for Hazardous Air Pollutants—Calendar Year 2015 INL Report for Radionuclides,” DOE/ID-11441 (2015), Idaho National Laboratory, Idaho Falls, ID, June 2016.

Sondrup, A.J., “Estimates of Gasesous VOC Flux Emissions from the Idaho National Laboratory Subsurface Disposal Area,” Letter Report prepared for Battelle Energy Alliance Management, Idaho National Laboratory, Idaho Falls, ID, June 2016.

Rood, A.S. A.J. Sondrup, and P,D. Ritter, “Quantitative Evaluation of an Air Monitoring Network Using Atmospheric Transport Modeling and Frequency of Detection Methods,” Health Physics Journal, Vol 110, No 4, April 2016.

McLing, T.L., R.P. Smith, R.W. Smith, D.D. Blackwell, R.C. Roback and A.J. Sondrup, “Wellbore and Groundwater Temperature Distribution in Eastern Snake River Plain; Implications for Groundwater Flow and Geothermal Potential, Idaho,” Journal of Volcanology and Geothermal Research, Vol 320, April 2016.

Plummer, M.A., Palmer, C.D., McLing, T.L. and A.J. Sondrup, “Modeling Heat Flow in the Eastern Snake River Plain Aquifer,” Proceedings, 41st Workshop on Geothermal Reservoir Engineering 2016, Volume 1 of 3, SGP-TR-209, Stanford University, Stanford, California, February 2016.

Sondrup, A.J., “Atmospheric Radionuclide Transport Modeling for Small Modular Reactor Site Selection at the Idaho National Laboratory,” Letter Report prepared for Battelle Energy Alliance Management, Idaho National Laboratory, Idaho Falls, ID, February 2016.
 
Sondrup, A.J., “Air Dispersion Modeling for the INL Application for a Synthetic Minor Sitewide Air Quality Permit to Construct with a Facility Emission Cap Component,” INL./EXT-15-35241, Idaho National Laboratory, Idaho Falls, ID, October 2015.

 
Rood, A.S. and A.J. Sondrup, “Application of Frequency of Detection Methods in Design and Optimization of the INL Site Ambient Air Monitoring Network,” INL/EXT-15-36544, Idaho National Laboratory, Idaho Falls, ID, October 2015.

 
Sondrup, A.J., M.A. Plummer and A.S. Rood, “Wastewater Effluent Release Limits for Non-Radionuclides at the Idaho National Laboratory,” ECAR-2477 Rev. 1, Idaho National Laboratory, Idaho Falls, ID, October 2015.

 
Schafer, A.L. and A.J. Sondrup, “Vault Hydraulic and Concrete Performance Analyses” to be included as appendix to the revised Performance Assessment for the Idaho National Laboratory Remote-Handled Low-Level Waste Disposal Facility, DOE/ID-11421, U.S. Department of Energy, Idaho Operations Office, Idaho Falls, Revision expected 2016.

 
Sondrup, A.J., “Idaho National Laboratory CY-2014 National Emission Standards for Hazardous Air Pollutants (NESHAP) Analysis, Methodology and Results for Radionuclides,” Attachment to “National Emission Standards for Hazardous Air Pollutants—Calendar Year 2014 INL Report for Radionuclides,” DOE/ID-11441 (2014), Idaho National Laboratory, Idaho Falls, ID, June 2015.

 
Sondrup, A.J. and M.A. Verdoorn, “Modeling Protocol for Evaluation of Air Emissions for the Idaho National Laboratory Site-wide Permit to Construct and Facility Emission Cap (PTC/FEC),” INL/MIS-15-34065, Idaho National Laboratory, Idaho Falls, ID, January 2015.

 
Rood, A.S., and A.J. Sondrup, “Quantitative Assessment of the INL Ambient Air Monitoring Network,” INL/EXT-14-33194, Idaho National Laboratory, Idaho Falls, ID, December 2014.

 
Sondrup, A.J., “Air Dispersion Modeling and Dose Calculations for the Advanced Test Reactor Advanced Graphite Capsule Experiment AGC-4 Air Permit Applicability Determination,” Idaho National Laboratory, Idaho Falls, ID, October 2014.

 
Sondrup, A.J., “Idaho National Laboratory CY-2013 National Emission Standards for Hazardous Air Pollutants (NESHAP) Analysis, Methodology and Results for Radionuclides,” Attachment to “National Emission Standards for Hazardous Air Pollutants—Calendar Year 2013 INL Report for Radionuclides,” DOE/ID-11441 (2013), Idaho National Laboratory, Idaho Falls, ID, June 2014.

 
Sondrup, A.J., “Analysis of Releases from the Biomass Feedstock Process Development Unit Dryer Stack at the Energy Systems Laboratory High-Bay Building Using AERMOD,” Idaho National Laboratory, Idaho Falls, ID, May 2014.

 
Sondrup, A.J., “Evaluation of the Air and Soil Pathway Doses During Normal Operations,” Appendix C of Impacts Analyses Supporting the National Environmental Policy Act Environmental Assessment for the Resumption of Transient Testing Program, Author A.L. Schafer, INL/EXT-13-29397, Idaho National Laboratory, Idaho Falls, ID, November 2013.

 
Sondrup, A.J., “Calculation of Radionuclide Air Pathway Unit Dose Factors for the Advanced Mixed Waste Treatment Project,” ECAR-2337, Idaho National Laboratory, Idaho Falls, ID, September 2013.

 
Sondrup, A.J., “Idaho National Laboratory Water Conservation Project Evaluation—Impact of Reducing Discharge to the Advanced Test Reactor Cold Waste Pond on Sulfate Concentrations in the Snake River Plain Aquifer,” INL/EXT-13-29885, Idaho National Laboratory, Idaho Falls, ID, August 2013.

 
Sondrup, A.J., “Air Modeling for the Advanced Test Reactor Back-to-Back Fission Chamber Air Permit Applicability Determination,” Idaho National Laboratory, Idaho Falls, ID, July 2013.

 
Sondrup, A.J., “Idaho National Laboratory CY-2012 National Emission Standards for Hazardous Air Pollutants (NESHAP) Analysis, Methodology and Results for Radionuclides,” Attachment to “National Emission Standards for Hazardous Air Pollutants—Calendar Year 2012 INL Report for Radionuclides,” DOE/ID-11441 (2012), Idaho National Laboratory, Idaho Falls, ID, June 2013.

 
Performance Assessment for the Idaho National Laboratory Remote-Handled Low-Level Waste Disposal Facility, DOE/ID-11421, U.S. Department of Energy, Idaho Operations Office, Idaho Falls, May 2012.

 
Sondrup, A.J., A.L. Schafer and A.S. Rood, “Evaluation of Groundwater Impacts to Support the National Environmental Policy Act Environmental Assessment for the INL Remote-Handled Low-Level Waste Disposal Project,” INL/EXT-10-19168 Rev. 3, Idaho National Laboratory, Idaho Falls, ID, December 2011.

 
Composite Analysis for the Idaho National Laboratory Remote-Handled Low-Level Waste Disposal Facility-DRAFT, DOE/ID-11422, U.S. Department of Energy, Idaho Operations Office, Idaho Falls, October 2011.

 
Performance Assessment and Composite Analysis Maintenance Plan for the Idaho National Laboratory Remote-Handled Low-Level Waste Disposal Facility-DRAFT, PLN-3368, Idaho National Laboratory, Idaho Falls, ID, October 2011.

 
Preliminary Monitoring Plan for the Idaho National Laboratory Remote-Handled Low-Level Waste Disposal Facility-DRAFT, PLN-3369, Idaho National Laboratory, Idaho Falls, ID, October 2011.

 
Preliminary Closure Plan for the Idaho National Laboratory Remote-Handled Low-Level Waste Disposal Facility-DRAFT, PLN-3370, Idaho National Laboratory, Idaho Falls, ID, October 2011.

 
Schafer, A.L., A.S. Rood, and A.J. Sondrup, “Explanation of Significant Differences Between Models used to Assess Groundwater Impacts for the Disposal of Greater-Than-Class C Low-Level Radioactive Waste and Greater-Than-Class C-Like Waste Environmental Impact Statement (DOE/EIS-0375-D) and the Environmental Assessment for the INL Remote-Handled Low-Level Waste Disposal Project (INL/EXT-10-19168),” INL/EXT-11-23102, Idaho National Laboratory, Idaho Falls, August 2011.

 
Sondrup, A.J., and A.S. Rood, “Air Pathway Assessment for the INL Remote-Handled Low-Level Waste Disposal Project,” ECAR-1370, Idaho National Laboratory, Idaho Falls, ID, April 2011.

 
Rood, A.S., A.J. Sondrup, and A.L. Schafer, “An Evaluation of Long-Term Performance of Liner Systems for Low-Level Waste Disposal Facilities,” Waste Management 2011 Symposium Proceedings, Waste Management 2011, Phoenix AZ, March 2011.

 
Schafer, A.L. and A.J. Sondrup, “Summary of Conceptual Models and Data Needs to Support the INL Remote Handled Low-Level Waste Disposal Facility Performance Assessment and Composite Analysis,” INL/EXT-10-18190, Idaho National Laboratory, Idaho Falls, ID, September 2010.

 
Schafer, A.L, and A.J. Sondrup, “Assessment of Potential Flood Events and Impacts at INL’s Proposed Remote Handled Low-Level Waste Disposal Facility Sites,” INL/EXT-10-18191, Idaho National Laboratory, Idaho Falls, ID, September 2010.
Sondrup, A.J., “Density Calculations for AGR-1 Fuel Particle Layers,” ECAR-824, Idaho National Laboratory, Idaho Falls, ID, November 2009.

 
Abbott, M.L., Plummer, M.A., and A.J. Sondrup, “AGR-1 Data Qualification Interim Report,” INL/EXT-09-16460, Idaho National Laboratory, Idaho Falls, ID, August 2009.

 
Huang, H., S.O. Magnuson, A.J. Sondrup, R.K. Podgorney, M. Rohe, and T.R. Wood, “Development of a Sitewide Groundwater Flow and Contaminant Transport Model at the Idaho National Laboratory,” Proceedings of 2007 American Geophysical Union Fall Meeting, San Francisco, CA, December 2007.

 
Sondrup, A.J. and M.A. Plummer, “Subsurface Contaminant Transport Modeling for the North Cavalcade Superfund Site, Houston, Texas,” prepared for U.S. Environmental Protection Agency, Region 6, Dallas, by Idaho National Laboratory, Battelle Energy Alliance, Idaho Falls, ID, January 2007.

 
Magnuson, S.O. and A.J. Sondrup, “Subsurface Flow and Transport Model Development for the Operable Unit 7-13/14 Remedial Investigation and Feasibility Study,” ICP/EXT-05-01016, Idaho Cleanup Project, Idaho Falls, ID, November 2006.

 
McKenzie, M.D., D.A. Cresap and A.J. Sondrup, “Environmental and Operational Report for the Operable Unit 7-08 Organic Contamination in the Vadose Zone Project – July 2005 through June 2006,” RPT-229, Idaho Cleanup Project, Idaho Falls, ID, August 2006.

 
Holdren, K.J., D.L. Anderson, B.H. Becker, N.L. Hampton, L.D. Koeppen, S.O. Magnuson, and A.J. Sondrup, “Remedial Investigation and Baseline Risk Assessment for Operable Unit 7-13/14,” DOE/ID-11241, U.S. Department of Energy, Idaho Operations Office, Idaho Falls, May 2006.

 
Sondrup, A.J., “Study of the Migration Potential of Hydrocarbons from Series 743 Sludge for the Targeted Waste Removal and Disposition Project,” EDF-5598, Idaho Cleanup Project, Idaho Falls, ID, December 2005.

 
Sondrup, A.J., L.A. Harvego, and L.T. Housley, “Biennial Remedial Action Status Report for the OU 7-08 Organic Contamination in the Vadose Zone Project,” ICP/EXT-05-00983, Idaho Cleanup Project, Idaho Falls, ID, September 2005.

 
Meyer, T.J., D.L. Anderson, C.W. Bishop, J.R. Giles, J.M. Hubbell, R.L. Jones, N. Josten, and A.J. Sondrup, “Final Report for the Waste Area Group 7 Probing Project,” ICP/EXT-05-00784, Idaho Cleanup Project, Idaho Falls, ID, May 2005.

 
Koeppen, L.D, G.L. Olson, A.M. Parsons, M.A. Plummer, P.D. Ritter, and A.J. Sondrup, “Fiscal Year 2004 Environmental Monitoring Report for Radioactive Waste Management Complex,” ICP/EXT-05-00795, Idaho Cleanup Project, Idaho Falls, ID, May 2005.

 
Housley, L.T. and A.J. Sondrup, “Environmental and Operational Mid-Year Data Report for the Operable Unit 7-08 Organic Contamination in the Vadose Zone Project – 2004,” ICP/EXT-04-00509, Bechtel BWXT Idaho, LLC, Idaho Falls, ID, September 2004.

 
Sondrup, A.J., E.C. Miller, E.H. Seabury, and N. Josten, “Estimating Carbon Tetrachloride and Total Volatile Organic Compound Mass Remaining in Subsurface Disposal Area Pits,” ICP/EXT-04-00396, Bechtel BWXT Idaho, LLC, Idaho Falls, ID, July 2004.

 
Koeppen, L.D, A.M. Parsons, A.J. Sondrup, P.D. Ritter, and G.L. Olson, “Fiscal Year 2003 Environmental Monitoring Report for Radioactive Waste Management Complex,” ICP/EXT-04-00259, Bechtel BWXT Idaho, LLC, Idaho Falls, ID, April 2004.

 
Myers, D.R., J.M. Hubbell, N. Josten, L.D. Koeppen, P.D. Ritter, H. Salomon, A.J. Sondrup, D.L. McElroy, and C.W. Bishop, “Fiscal Year 2003 Summary Report for the Operable Unit 7-13 and 7-14 Probing Project,” ICP/EXT-04-00189 Rev. 0, Bechtel BWXT Idaho, LLC, Idaho Falls, ID, April 2004.

 
Hull, L.C., and A.J. Sondrup, “Geochemical Conditions in Buried Transuranic Waste Monitored Using In-Situ Degradation of Chlorinated Solvents,” Waste Management 2004 Symposium Proceedings, Waste Management 2004, Tucson AZ, March 2004.

 
Myers, D.R., J.M. Hubbell, N. Josten, D.L. Koeppen, P. Martian, P.D. Ritter, M.S. Roddy, H. Salomon, and A.J. Sondrup, “FY 2002 Summary Report for the OU 7-13/14 Probing Project,” INEEL/EXT-03-00001, Bechtel BWXT Idaho, LLC, Idaho Falls, ID, April 2003.

 
Olsen, G.L., L.D. Koeppen, A.M. Parsons, P.D. Ritter, A.J. Sondrup, “FY 2002 Environmental Monitoring Report for the Radioactive Waste Management Complex ,” INEEL/EXT-03-00055, Bechtel BWXT Idaho, LLC, Idaho Falls, ID, March 2003.

 
Oh, C.H., W.C. Downs, L.T. Housley, and A.J. Sondrup, “Impact of Atmospheric Pressure Fluctuations on Vadose Zone Contaminant Plumes,” Materials Research Society Symposium Proceedings Series, Volume 757, 2002 MRS Fall Meeting, Boston MA, December 2002.

 
Sondrup, A.J., R.D. McMurtrey, and L.A. Harvego, “Interim Remedial Action Report for Operable Unit 7-08, Organic Contamination in the Vadose Zone,” INEEL/EXT-02-00862 Rev. A, Bechtel BWXT Idaho, LLC, Idaho Falls, ID, December 2002.

 
Holdren, K.J., B.H. Becker, N.L. Hampton, L.D. Koeppen, S.O. Magnuson, T.J. Meyer, G.L. Olsen, and A.J. Sondrup, “Ancillary Basis for Risk Analysis of the Subsurface Disposal Area,” INEEL/EXT-02-01125, Bechtel BWXT Idaho, LLC, Idaho Falls, ID, September 2002.

 
Harvego, L.A., A.J. Sondrup, and R.D. McMurtrey, “Monitoring, Modeling and Remediating a Large Subsurface Vapor Plume and the Idaho National Engineering and Environmental Laboratory,” Proceedings of Spectrum 2002, 9th Biennial International Conference on Nuclear and Hazardous Waste Management, Reno NV, August 2002.

 
Varvel, M.J., and A.J. Sondrup, “Estimate of a Tortuosity Factor for Gas Diffusion in Overburden Soils in the Subsurface Disposal Area for Operable Unit 7-08,” INEEL/EXT-01-01534 (EDF-2960), Bechtel BWXT Idaho, LLC, Idaho Falls, ID, December 2001.

 
Oh, C.H., L.T. Housley, A.J. Sondrup, and W.C. Downs, “Gas Contaminant Mobility at the Subsurface Disposal Area,” Materials Research Society Symposium Proceedings Series, Volume 713, 2001 MRS Fall Meeting, Boston MA, November 2001.

 
Sondrup, A.J., and L.T. Housley, “A Compilation and Analysis of Shallow Soil Gas Surveys Performed at the Subsurface Disposal Area,” INEEL/EXT-01-00026 (EDF-ER-263), Bechtel BWXT Idaho, LLC, Idaho Falls, ID, July 2001.

 
Greenwade, L.E., S.R. Woolsey, M.J. Cebull, S.O. Magnuson, and A.J. Sondrup, “Effective Multi-resolution Visualization for Subsurface Science,” Proceedings of Spring 2000 SUPerG Computer Visualization Conference, Paris, France, April 2000.

 
Magnuson, S.O., A.J. Sondrup, and J.D. Navratil, “Preliminary Environmental Flow and Transport Modeling at the Idaho National Engineering and Environmental Laboratory, USA,” Proceedings of ICEM ’99: 7th International Conference on Radioactive Waste Management and Environmental Remediation, Nagoya, Japan, September 1999.

 
Sondrup, A.J., “Modeling of VOC Transport for Operable Unit 7-08, Evaluation of Increased Carbon Tetrachloride Inventory,” INEEL-/EXT-98-00849, Lockheed-Martin Idaho Technologies Co., Idaho Falls, October 1998.

 
Becker, B.H, J.D. Burgess, K.J. Holdren, D.K. Jorgensen, S.O. Magnuson, and A.J. Sondrup, “Interim Risk Assessment and Contaminant Screening for the Waste Area Group 7 Remedial Investigation,” DOE/ID-10569, U.S. Department of Energy, Idaho Operations Office, Idaho Falls, August 1998.

 
Magnuson, S.O., and A.J. Sondrup, “Development, Calibration and Predictive Results of a Simulator for Subsurface Pathway Fate and Transport of Aqueous and Gaseous Phase Contaminants in the Subsurface Disposal Area at the Idaho National Engineering and Environmental Laboratory,” INEL/EXT-97-00609, Lockheed-Martin Idaho Technologies Co., Idaho Falls, July 1998.

 
Sondrup, A.J., R.C. Arnett, G.E. Matthern, and E.R. Neher, “In Situ Bioremediation Modeling for Test Area North Final Groundwater Remediation Operable Unit 1-07B,” INEEL/EXT-98-00418, Lockheed-Martin Idaho Technologies Co., Idaho Falls, April 1998.

 
Becker, H.B. and A.J. Sondrup, “Development of a Comprehensive Source Term Model for the Subsurface Disposal Area INEEL,” Waste Management 1998 Symposium Proceedings, Waste Management 1998, Tucson Arizona, March 1998.

 
Magnuson, S.O., and A.J. Sondrup, “Sensitivity Simulation Results for SL-1 Burial Grounds Groundwater Pathway Risk with Increased Inventory and Increased Infiltration,” EDF-ER-032, Lockheed-Martin Idaho Technologies Co., Idaho Falls, February 1998.

 
Magnuson, S.O., and A.J. Sondrup, “Waste Area Group 7 Subsurface Pathway Flow Model Development and Calibration,” INEL-96/0297, Lockheed-Martin Idaho Technologies Co., Idaho Falls, August 1996.

 
Rohe, M. J., A. J. Sondrup, and C. A. Whitaker, “Groundwater Risk Assessments for the PBF Warm-Waste Injection Well (PBF-05), the PBF Corrosive-Waste Injection Well (PBF-15), and the SPERT-IV Leach Pond (PBF-22),” EDF-ER-WAG5-89, Lockheed-Martin Idaho Technologies Co., Idaho Falls, June 1996.

 
Sondrup, A.J., R.C. Arnett, T.K. Honeycutt, A.H. Wylie, and J.F. Keck, “Data Evaluation and Vadose Zone DNAPL Modeling of the Allied Signal, Inc. Site, North Hollywood Operable Unit, San Fernando Valley Superfund Site,” Prepared for U.S. Environmental Protection Agency, Region 9, San Francisco, by Lockheed Idaho Technologies Co., Idaho Falls, March 1996.

 
Sondrup, A.J., and P. Martian, “SDA Volatile Organic Data Compilation: Soil Vapor and Water Samples,” EDF-ER-WAG7-73, Lockheed Idaho Technologies Co., Idaho Falls, May 1995.

 
Sondrup, A.J., and P. Martian, “SDA Buried Drum Failure Rate Data Compilation,” EDF-ER-WAG7-68, Lockheed Idaho Technologies Co., Idaho Falls, May 1995.

 
Sondrup, A.J., S.O. Magnuson, C.S. Smith, and A.S. Rood, “Groundwater Pathway Modeling to Support the Baseline Risk Assessment for Operable Units 5-05 and 6-01, SL-1 and BORAX-I Burial Grounds Remedial Investigation/Feasibility Study,” in Remedial Investigation/Feasibility Study Report for Operable Units 5-05 and 6-01 (SL-1 and BORAX-I Burial Grounds), INEL-95/0027, Lockheed Idaho Technologies Co., Idaho Falls, March 1995.

 
Keck, K.N, I. Porro, A.J. Sondrup, S.H. McCormick, and S.M. Lewis, “Remedial Investigation/Feasibility Study Report for Operable Unit 4-12: Central Facilities Area Landfills I, II, and III at the Idaho National Engineering Laboratory,” INEL-94/0124, Lockheed Idaho Technologies Co., Idaho Falls, February 1995.

 
Becker, B.H., C.A. Loehr, S.M. Rood, and A.J. Sondrup, “Risk Assessment of Remedial Objectives for Nontransuranic Waste in Pit 9,” EGG-ER-11093, Rev. 1, EG&G Idaho Inc., Idaho Falls, July 1994.

 
Lodman, D., S. Dunstan, W.C. Downs, A.J. Sondrup, D.H. Miyasaki, K.J. Galloway, K.J. Izbicki, “Treatability Study Report for Organic Contamination in the Vadose Zone, OU-7-08, Idaho National Engineering Laboratory,” EGG-ER-11121, EG&G Idaho Inc., Idaho Falls, May 1994.

 
Sondrup, A.J., “Estimating Large-Scale Vertical Air Permeability in the Vadose Zone,” American Geophysical Union Spring Meeting Proceedings, Baltimore Maryland, May 1994.

 
Sondrup, A.J., W.C. Downs, J.R. Weidner, and T.G. Kaser, “Vertical Air Permeability in the Unsaturated Zone at the Radioactive Waste Management Complex,” EDF-ER-VVED-116, EG&G Idaho Inc., Idaho Falls, January 1994.

 
Duncan, F.L., A.J. Sondrup, and R.E. Troutman, “Remedial Investigation/Feasibility Study Report for the Organic Contamination in the Vadose Zone-Operable Unit 7-08,” EGG-ER-10684, EG&G Idaho Inc., Idaho Falls, December 1993.

 
Sondrup, A.J., “Preliminary Air Pathway Analysis of VOCs at the Radioactive Waste Management Complex,” EDF-ER-VVED-080, EG&G Idaho Inc., Idaho Falls, December 1993.

 
Weidner, J.R., W.C. Downs, and A.J. Sondrup, “Application of the Straddle Packer to Vapor Extraction Systems,” American Geophysical Union Fall Meeting Proceedings, Baltimore Maryland, October 1993.

 
Keck, K.N, G.J. Stormberg, I. Porro, A.J. Sondrup, and S.H. McCormick, “Remedial Investigation/Feasibility Study Work Plan and Addenda for Operable Unit 4-12: Central Facilities Area Landfills II and III at the Idaho National Engineering Laboratory, EGG-ERD-10453, EG&G Idaho Inc., Idaho Falls, July 1993.

 
Weidner, J.R., A.J. Sondrup, T.G. Kaser, and W.C. Downs, “Vapor Port Permeability,” EDF-ER-VVED-101, EG&G Idaho Inc., Idaho Falls, December 1992.

 
Magnuson, S.O., and A.J. Sondrup, “A Modeling Study of Contaminant Transport Resulting from Flooding of Pit 9 at the Radioactive Waste Management Complex, Idaho National Engineering Laboratory.” EGG-EEL-10498, EG&G Idaho Inc., Idaho Falls, September 1992.

 
Chatwin, T.D., A.D. Coveleskie, K.J. Galloway, J.M. Hubbell, R.M. Lugar, G.E. Matthern, O.R. Perry, A.J. Sondrup, and S.N. Stanisich, “Final Work Plan for the Organic Contamination in the Vadose Zone, Operable Unit 7-08, Focused Remedial Investigation/Feasibility Study, EGG-WM-10049, Rev. 1, EG&G Idaho Inc., Idaho Falls, July 1992.

 
Sondrup, A.J., “Sensitivity Analysis of Subsurface Soil-Gas Flow Parameters for the Vapor-Vacuum Extraction System: Impact of Interbed Saturation and Anisotropy of Basalt Permeability,” EDF-ER-VVED-078, EG&G Idaho Inc., Idaho Falls, January 1992.

 
Walton, J.C., R.G. Baca, J.B. Sisson, A.J. Sondrup, and S.O. Magnuson, “Application of Computer Simulation Models to the Design of Large-Scale Soil Venting Systems and Bioremediation,” Proceedings of Symposium on Soil Venting, National Center for Ground Water Research, Houston, Texas, August 1991.

 
Magnuson, S.O., R.G. Baca, and A.J. Sondrup, “Independent Verification and Benchmark Testing of the PORFLO-3 Computer Code, Version 1.0,” EGG-BG-9175, EG&G Idaho Inc., Idaho Falls, August 1990.

 
Sondrup, A.J. and R.F. Boehm, “Evaluation of Magma Energy Power Generation Systems,” Journal of Energy Conversion and Management, Vol. 30, pp. 217-313, 1990.
Presentations:
​Dresel, P.E., S.R. Waichler, B.M. Kennedy, J.C. Hayes, J.I. McIntyre, J.R. Giles, and A.J. Sondrup, “Xenon Isotopes Releases from Buried Transuranic Waste,” 2004 American Geophysical Union Fall Meeting, San Francisco, CA, December 2004.

 
Sondrup, A.J., Degradation of Chlorinated Solvents in the Vadose Zone at a Radioactive Waste Subsurface Disposal Area, Inland Northwest Research Association (INRA) 2003 Subsurface Science Symposium, Salt Lake City, UT, October 2003.

 
Sondrup, A.J., “Volatile Organic Contaminant Transport in the Vadose Zone and Aquifer at the Subsurface Disposal Area INEEL: Results and Lessons Learned from the Mother of All Modeling Studies,” Invited Speaker at U.S. Environmental Protection Agency Technical Support Project Semi-Annual Meeting, Salt Lake City Utah, February 1998.

 
Sondrup, A.J., “Development of a Comprehensive Source Term Model for the Subsurface Disposal Area INEEL,” at Connections '97: Ground Water in the Rocky Mountain Region Conference, Boise Idaho, September 1997.

 
Sondrup, A.J., “DNAPL Vadose Zone Modeling: Lessons Learned from a California Superfund Site,” Invited Speaker at U.S. Environmental Protection Agency Technical Support Project Semi-Annual Meeting, San Francisco California, August 1996.

 
Sondrup, A.J., “Vapor Vacuum Extraction,” Invited speaker at U.S. DOE Technical Information Exchange Meeting, Augusta Georgia, November 1991.

 
Sondrup, A.J., “Porous Media Modeling using the CRAY Supercomputer,” Presented at Fifth Annual INEL Computing Symposium, Idaho Falls Idaho, September 1991.

 
Sondrup, A.J., “Soil Vapor Extraction at the Idaho National Engineering Laboratory,” Invited Speaker at U.S. DOE Dense Non-Aqueous Phase Liquids Workshop, Atlanta Georgia, July 1991.​
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