Curriculum Vitae
John C. Walton, Ph.D., P.E.
Ph: (915) 747-5000
Email: walton”at”utep”dot”edu
Home Page: http://WindowOutdoors.com
Professional Experience
(6/93 - Professor, Dept. Civil
Engineering, University of Texas at El Paso, El Paso, Texas.
Teaching and research in environmental engineering, hydraulics, ground water,
and materials degradation. Development of new teaching methods.
(8/03 - 8/05) Interim
Director, Center for Environmental Resource Management.
(12/03 - Adjunct Professor in
Environmental Sciences, University of
(9/02 - 8/05) Program Director, Environmental
Science and Engineering Program.
(1/92 - 5/93) Senior
Research Engineer, Southwest Research Institute,
(9/87 - 1/92) Scientific Specialist, EG&G
(1/91 - 12/91) Affiliate Faculty,
(4/84 - 9/87) Senior Engineer, Rockwell Þ Westinghouse
(10/79 - 4/84) Air Quality Specialist,
Education
(1991)
(1988)
(1981)
(1977)
Research Interests
Hydrology.
Influence of topography and solar radiation on plant communities. Contamination
and recovery of river ecosystems. Surface and ground water interactions as they
influence water quality. Mathematical modeling of saturated and unsaturated
flow. Flow around and through waste disposal facilities. Monitoring, chemical
analysis, and modeling of lake chemistry.
Environmental
Remediation. Analysis of
leach rates from various wasteforms including cementitious, glass, and spent
fuel. Co-precipitation of metals with calcite.
Desalination. Membrane treatment of brackish water. Management
of concentrates produced from desalination. Membrane distillation using solar
energy.
Waste
Disposal Technology.
Leakage through flaws in geomembrane liners. Design and performance assessment
of concrete vaults for waste disposal. Coupling between corrosion processes and
localized geochemistry. Waste package design for high level nuclear waste
disposal. Coupled modeling of thermal, hydrologic and chemical processes near
nuclear waste packages. Influence of carbonation and oxidation on leaching from
cementitious wasteforms.
Materials
Performance. Long term
degradation of concrete. Theoretical modeling of the electrochemistry inside
localized corrosion cavities. Estimation of long term corrosion rates of copper
and steel.
Publications and
Presentations
 = refereed publication
1) Woocay A. and J. C. Walton, (in press), Multivariate Analyses of Water
Chemistry: Surface and Ground Water Interactions, Ground Water.
2) Pekar, Katrins, Phillip Goodell, John Walton, Elizabeth Anthony, and MinhuaRen, Equation fitting U-Series Radionuclide Transport Through Soil at Pena Plana, Chihuahua, Mexico, American Geophysical Union 2007 Joint Meeting, May 22, 2007, Acapulco, Mexico (abstract and presentation).
3) Walton, John, August 2006 El Paso Flooding: Technical and Policy Factors, Universities Council on Water Resources, Boise Idaho, Plenary Speaker, July, 2007.
4) Woocay, A. and J. Walton, Infiltration History and Spatial Variability Derived from Chloride Mass Balance and Groundwater Chemistry, Presented at: Devils Hole Workshop, Death Valley, May 2007.
5) Â Bahrami, D., G. Danko, and J. Walton, Water, Vapor, and Salt Dynamics in a Hot Repository, Materials Research Society (in press).
6) Â Rice, Robert and John Walton, Design factors affecting the flow of water through below-ground concrete vaults, J. Envir. Engr., Volume 132, Issue 10, pp. 1346-1354 (October 2006)
7)
Woocay, Arturo and Walton, John C., (2006), Groundwater
Chemistry Analysis by Multivariate Statistical Methods, Eos Trans.
8)
 José H. García, Wen-Whai Li, Nidia
Cárdenas, Richard Arimoto, John Walton
and David Trujillo, Determination of PM2.5 sources using time-resolved
integrated source and receptor models, Chemosphere, Volume 65, Issue 11,
December 2006, Pages 2018-2027.
9)
Woocay, Arturo and Walton, John C., (2006), Evidence of Past Focused Infiltration at Fortymile Wash, Geological
Society of America Abstracts with Programs, Vol. 38, No. 7, p. 335, 2006.
Presented at: GSA Annual Meeting, Philadelphia, PA,
10)
Walton, J, G. Danko, and D. Bahrami, Effect of cyclic, sporadic, or
episodic processes
on evolution of environments in a repository in Yucca Mountain, Invited
Presentation at the Nuclear Waste Technical Review Board Corrosion Workshop,
Las Vegas, NV, September, 2006.
11)
Agrawala, Gautam K., Woocay, Arturo and
12)
Agrawala, Gautam K. and
13)
Agrawala, Gautam K and
14)
 Hall, Drew and John Walton,
Conceptual model for flow separation processes affecting waste package chemical
environment, Yucca Mountain, Nevada, Applied Geochemistry, Volume 21, Issue 6,
Pages 859-869, June 2006.
15)
 Veranth, John M, Moss, Tyler A.,
Chow, Judith C., Labban, Raed, Nichols, William K., Walton, John C., Watson,
John G, Yost, Garold S., Correlation of In Vitro Cytokine Responses With the
Chemical Composition of Soil-Derived Particulate Matter, Environ Health
Perspect. 2006 March; 114(3): 341–349.
16)
 Woocay, Arturo and Walton, John C.,
Climate Change Effects on Yucca Mountain
Region Groundwater Recharge, IHLRWM
2006, Las Vegas, NV, April 30-May 4, 2006, 191-198, 2006
17)
Rice, Robert and John Walton, Factors
Affecting Risk Predictions: Proposed Rule And Other Risk Metrics, IHLRWM 2006, Las Vegas, NV, April 30-May
4, 2006, 191-198.
18)
Woocay, Arturo and Walton, John C., (2006), Multivariate Statistical Methods Applied to Surface and Groundwater
Interactions, Abstract Book of the
2006 Ground Water, p. 94, 2006. Presented at: NGWA 2006 Ground Water
Summit, San Antonio, TX, April 22-27, 2006.”
19)
Romero-Gonzalez, J, J.C. Walton, J. R. Peralta-Videa, E. Rodr’guez, S. L.
Ramirez, J.L. Gardea-Torresdey.Study of the advective and dispersive transport
of the binding of Cr(III) from aqueous solution onto Agave lechuguilla biomass,
Journal of Hazardous Materials, in review.
20)
Woocay, Arturo and Walton, John C., Infiltration Dates Derived from Chloride
Mass Balance, Poster presented at: Devil’s Hole Workshop, Furnace
Creek, CA, April, 2006.
21)
Walton, John and Arturo Woocay, Nye County Ground Water Chemistry
Analysis Report for the Early Warning Drilling Program April 2004 - March 2005,
NWRPO-2005-01, May 2005.
22)
Goodell, Philip, Walton, John, and Rodriguez, Alfredo, Future Studies At
Pena Blanca: Radionuclide Migration In The Vadose Zone Of An Alluvial Fan,
Geological Society of America Abstracts with Programs, Vol. 37, No. 7, p. 453,
2005.
23)
Walton, John, Goodell, Philip, Beshears, Charles, French, Diana, and
Kelts, Aaron, Radionuclide Dispersion
Rates By Aeolian, Fluvial, and Porous Media Transport, Geological Society of
America Abstracts with Programs, Vol. 37, No. 7, p. 268, 2005.
24)
Woocay, Arturo Walton, John C., and King, Michael, Multivariate Statistical Methods Applied to Interpretation of
Hydrological Data, Presented at: 2005 New Mexico Water Research Symposium,
Socorro, NM,
25)
Woocay, Arturo and Walton, John C., Focused
Infiltration Effects on Amargosa Desert Regional Groundwater Chemistry,
Presented at: Devil's Hole Workshop, Furnace Creek, CA, May, 2005.
26)
Woocay, Arturo and John Walton, (2005), Statistical Analysis of Yucca Mountain Regional Groundwater Chemistry
Evolution, Presented at: Waste Management Symposium, Mar, 2005.
27)
Agrawala, Gautam K. and
28)
Agrawala, Gautam K. and
29)
 Romero-Gonzalez,
J., Cano-Rodriguez, I., Walton, J.C.,
Peralta-Videa, J.R., Rodriguez, E., Gardea-Torresdey, J.L. Column studies of the adsorption and reduction of Cr(VI)
from an aqueous solution by Agave lechuguilla biomass. Revista Mexicana de
Ingenieria Quimica 4, 257-268, 2005
30)
Rodr’guez-Pineda, J. Alfredo, Goodell, Philip, Dobson, Patrick F.,
Walton, John, Oliver, Ronald D., De La Garza, Rodrigo, And Harder, Steve,
Regional Hydrology of The Nopal I Site, Sierra De Pe–a Blanca, Chihuahua,
Mexico, Geological Society of America Abstracts with Programs, Vol. 37, No. 7,
p. 196, 2005.
31)
Woocay, Arturo and Walton, John C., (2005), Groundwater Evidence of Past Climate Change in The Amargosa Desert,
Geological Society of America Abstracts with Programs, Vol. 37, No. 7,
p. 468, 2005. Presented at: GSA Annual Meeting, Salt Lake City, UT,
32)
Walton, John and Woocay, Arturo, (2005), Nye County Ground Water Chemistry Analysis Report for the Early Warning
Drilling Program April 2004 - March 2005, NWRPO-2005-01, May 2005.
33)
 Li, W. -W.,
N. Cardenas, R. Arimoto, J. Walton, D. Trujillo, H. Morales. 2004. PM source identification at Sunland Park, New
Mexico using a simple heuristic meteorological and chemical analysis. Journal
Air and Waste Management Association, 55:352–364, March 2005.
34)
 Walton, J.C., F.
Martinez-Gonzalez, and R. Worthington, Desert Vegetation and Timing of Solar
Radiation, Journal of Arid Environments, Volume 60, Issue 4, Pages
697-707, March 2005.
35)
H. Becerra, J. Walton, H. Lu, Salinity Gradient Solar Ponds: A Useful Technology
in Concentrate Management and Desalination?, Presented at: 2004, National
Salinity Management and Desalination Summit, Las Vegas, December 13-14, 2004.
36)
A. Woocay and J. Walton, Multivariate Analysis of Amargosa Valley, NV
Groundwater Chemistry, Presented at: AGU Fall Meeting, San Francisco, 2004.
37)
A. Woocay and J. Walton, Groundwater Flow Paths and Trends in Nye
County, Nevada Based Upon Correspondence Analysis of Major Ion Chemistry,
Presented at:Devil’s Hole Workshop, Pahrump, NV, June 2-4, 2004.
38)
H. Becerra, J. Dowdy, H. Lu, and J. Walton, Zero Discharge Waste Brine
Management for Solar Desalination Plants, World Renewabel Energy Congress VIII,
August 29 - September 3, 2004, Denver, Colorado.
39)
Walton, J.C. and D. Hall, Alternate Conceptual Models for Engineered
Barrier System Chemistry and Performance, Presented to: Nuclear Waste
Technical Review Board, January 19, 2004, Las Vegas.
40)
Arimoto, R., W.-W. Li, N. Cardenas, J. Walton, D. Trujillo, H. Morales,
S. Sage, C. Schloesslin, 2003. Investigations
of the Low Wind Particulate Matter Spikes at the Sunland Park, New Mexico
Monitoring Site. Paper presented in
the 2004 Border Regional Environmental Conference, Feb. 10 - 12, 2004, Laredo,
TX
41)
 J. H. Garc’a, W.-W. Li, J. Walton,
R. Arimoto, C. Schloeesslin, S. Sage, R. Okrasinski, J. Greenlee, 2004. Characterization and Implication of Potential
Fugitive Dust Sources in the Paso del Norte Region, Jl. Science of the Total
Environment. Volume 325, Issues 1-3, Pages 95-112
42)
Danko, George, Davood Bahrami, and John Walton, Status of Nye County
Ventilation Studies, Invited presentation to: Nuclear Waste Technical Review
Board, January 19, 2004, Las Vegas.
43)
 Peralta-Videa, J.R., J.L.
Gardea-Torresdey, J. Walton, W. P. Mackay, M. Duarte-Gardea, Effects of Zinc
upon Tolerance and Heavy Metal Uptake in Alfalfa Plants (Medicago sativa), Bull.
Environ. Contam. Toxicol. 70:1036-1044, 2003.
44)
Garcia, J. H., W.-W. Li, J. Walton, R. Arimoto, C. Schloesslin, S. Sage,
R. Okrasinski, J. Greenlee, W. Gutman.
2003. Implications on
Contributing Sources by Chemical Composition in Regional Surficial Soil, Paper
presented in the North American Research Strategy for Tropospheric Ozone
(NARSTO) Workshop on Innovative Methods for Emission Inventory and Evaluation,
Oct. 14 - 17, 2003, Austin, Texas
45)
Hall, Drew and John Walton, Patterns and Trends in the Water Chemistry of
Nye County Wells. Presented at: Devil’s Hole Workshop and Death Valley Regional
Flow Model Technical Interaction Meeting, May, 2003.
46)
Hall, Drew and John Walton, Nye County Ground Water Chemistry Monitoring,
Sampling and Analysis Report for the Early Warning Drilling Program Fiscal Year
2002, May, 2003.
47)
Walton, John and Drew Hall, Evaporation, Reconstitution, and Water
Chemistry, Invited presentation at: NRC and DOE Performance Assessments:
Assumptions and Differences, Washington, DC, March 25-27, 2003.
48)
Paschold, H., H. Morales, W. Li, and J. Walton. 2002.
Evaporative Cooler Effects on Indoor PM concentrations under laboratory
conditions. Paper presented in the Rio
Bravo/Rio Grande Environmental Conference, South Padre Island, Texas, Feb. 20 -
23, 2002.
49)
 Hall, Drew and John Walton,
Physical Separation Processes and EBS Water Chemistry – A Modeling Study, 10th
International High Level Waste Management Conference, American Nuclear Society,
Las Vegas, Nevada, April, 2003.
50)
 Paschold, H, W. Li, H. Morales,
and J. Walton, Laboratory Study of the Impact of Evaporative Coolers on Indoor
PM Concentrations, Atmospheric Environment, 37:1075-1086 (2003).
51)
Lu, H., J. Walton, S. Irvine, and H. Remmers, Memorandum Report:
Conceptual Application and Feasibility of Salinity Gradient Solar Pond
Technology in San Joaquin Valley, California, DWR of California, 2002.
52)
Paschold, H., H. Morales, W. Li, and J. Walton. 2002.
Field study of the impact of evaporative coolers on PM
concentrations. Paper presented in the
Rio Bravo/Rio Grande Environmental Conference, South Padre Island, Texas, Feb.
20 - 23, 2002.
53)
Walton, John and Huanmin Lu, US Experience with Solar Ponds: Current and
Future Trends, Presented at: Euromed Conference on Solar Ponds, Tunis, Tunisia,
December, 2001.
54)
Garcia, J., W. Li, J. Walton,
2001. Multivariate analysis of wintertime inorganic PM
data. The 2001 SCERP Conference:
Promoting Policies to Implement the Vision.
October 17-19, 2001, Universidad Autonoma de Baja California, Mexico.
55)
Lu, Huanmin, John Walton, Andrew Swift, and Herbert Hein, Fundamentals of
Solar Pond Operation and Technology Advancements at the El Paso Solar Pond,
Presented at: Euromed Conference on Solar Ponds, Tunis, Tunisia, December,
2001.
56)
Walton, John and Huanmin Lu, Solar Pond Coupled Desalination and
Electricity Production, Presented at: Euromed Conference on Solar Ponds, Tunis,
Tunisia, December, 2001.
57)
Gomez, J.D., J. Walton, and N.E. Pingitore, Mobilization of Heavy Metals
in Contaminated Soils Using CO2 Manipulation, 2001
American Water Resources Conference, Albuquerque, 2001.
58)
Hilton, R.V., J. Walton, and N.E. Pingitore, Mobilization and
Sequestration of Subsurface Metals Through pCO2 Manipulation, 2001 American
Water Resources Conference, Albuquerque, 2001.
59)
Walton, John, Upstream Water Reuse and Development Impacts on Rio Grande
Water Quality, The Southwest Center for Envirnonmental Research and
Policy’s 2001 Annual Technical
Conference, entitled “Sustainable Development in the U.S.-Mexico Border
Region,” Mexicali, B.C., Mexico on October, 2001.
60)
 Lu, H., J. Walton and A. Swift,
"Desalination Coupled with Salinity-Gradient Solar Ponds,"
Desalination 136 (2001) 13-23.
61)
 Walton, John and Gregory Ohlmacher,
Surface and Ground Water Interactions: El Paso – Ciudad Juarez Region, SCERP
Monograph Series, No. 2, Water issues along the U.S.-Mexican border, Ed: Paul
Westerhoff, .pp. 21-29, San Diego State University Press, 2000.
62)
Walton, J.C., H. Lu, C. Turner, A. Swift, Desalination in the Inland
Desert, Invited Keynote Presentation at: International Conference on
Desalination Strategies in South Mediterranean Countries, Jerba, Tunisia,
September, 2000.
63)
 Lu, H. J. Walton and A. Swift,
"Zero Discharge Desalination," Desalination & Water Reuse, Vol.
10. No. 3, November/December 2000.
64)
 Walton, C.L. and J.C. Walton,
Efficiency of bicycle chain drives – results at constant velocity and supplied
power, Human Power No. 51, IHPVA, San Luis Obispo, CA., pp. 14-15, 2000.
65)
Garcia, Jose H., John C. Walton, and Wen-Whai Li, Oxone Prediction Based
onSimple Meteorological Models, Proceedings Texas Section-ASCE Fall 2000
Meeting, El Paso, Texas, p. 11-20, 2000.
66)
Clague, Juan, W., Nicholas E. Pingitore, and John C. Walton, Induced
Subsurface Mineral Growth to Sequester Radionuclides and Toxic Elements by
Coprecipitation with Calcite, Proceedings Texas Section-ASCE Fall 2000 Meeting,
El Paso, Texas, p. 33-42, 2000.
67)
Magallon, Angel G. and John C. Walton, Development Impacts on Rio Grande
Water Quality, Proceedings Texas Section-ASCE Fall 2000 Meeting, El Paso,
Texas, p. 281-290, 2000.
68)
Lu, Huanmin, John C. Walton, and Herbert Hein, Thermal Desalination Using
MEMS and Salinity-Gradient Solar Pond Technology, US Bureau of Reclamation,
Desalination Research and Development Program Report, (in press).
69)
Walton, John, Huanmin Lu, Charles Turner, Sergio Solis, and Herb Hein,
Solar and Waste Heat Desalination by Membrane Distillation, US Bureau of
Reclamation, Desalination Research and Development Program Report, (in press).
70)
 Lu, H. and J.C. Walton, Operation
of Multi-Effect Multi-Stage Desalination Coupled with a Salinity-Gradient Solar
Pond, ASME/ASES Solar Energy Conference, June 16-21, 2000, Madison, Wisconsin,
2000.
71)
 Walton, J.C., H. Lu, and S. Solis,
Air Gap Membrane Distillation by Salinity Gradient Solar Pond, ASME/ASES Solar
Energy Conference, June 16-21, 2000, Madison, Wisconsin, 2000.
72)
Lu, Huanmin, J.C. Walton, A.H.P. Swift, and C. Turner, Zero Discharge
Desalination, American Desalination Association (ADA) North American Biennial
Conference, August 6-9, 2000, Lake Tahoe, Nevada.
73)
Walton, John, Sergio Solis, Huanmin Lu, Charles Turner, Herbert Hein,
Membrane Distillation Desalination with a Salinity Gradient Solar Pond, 17th Annual
Conference on Technology/Planning, Newton Marriott, Boston, Business
Communications Co., Norwalk, Connecticut, 1999 (presentation and paper in
proceedings), 1999.
74)
Turner, C. D., J. C. Walton, E. Bermea, M. Quezada, Salinity and TOC
Removal Using Nanofiltration, US Bureau of Reclamation, Contract No.
1425-97-FC-81-30006E, US Bureau of Reclamation Water Treatment Technology
Program Report No. XXX, 1999.
75)
Turner, C. D., J. C. Walton, J. D. Moncada, M. Tavares, Brackish
Groundwater Treatment and Concentrate Disposal for the Homestead Colonia El
Paso, Texas, US Bureau of Reclamation Water Treatment Technology Program Report
No. 32, 1999.
76)
 Walton, J., G. Ohlmacher, D. Utz,
M. Kutainawala, Response of the Rio Grande and Shallow Ground Water in the
Mesilla Bolson to Irrigation, Climate Stress, and Pumping, Environmental and
Engineering Geoscience, Vol. V, No. 1, pp. 41-50, 1999.
77)
 MD. Sazzad Bin Shafique, John C.
Walton, Neyda Guiterrez, Robert W. Smith, and Anthony Tarquin, Influence of
Carbonation on Leaching of Cementitious Wasteforms, ASCE Journal of
Environmental Engineering, Vol. 124, No. 5, 1998.
78)
Walton, John, Charles Turner, Gregory Ohlmacher, and Dennis Utz,
Interaction of Shallow Groundwater and the Rio Grande, Presented at: Cross
Currrents in Water Policy UCOWR 98, Portland, Oregon, August, 1998.
79)
Walton, John, Gregory Ohlmacher, and Dennis Utz, Surface/Ground Water
Interactions and Water Quality Along the Rio Grande/ Rio Bravo, Presented at:
Association of Borderland Studies, Annual Meeting, Nogales Arizona, February,
1998.
80)
Walton, John, Water Quality and Coupling between Surface and Ground
Water: West Texas, Southern New Mexico, and Northern Chihuahua, Presented at:
Southwest Center for Environmental Research and Policy, El Paso Texas, 1997.
81)
¬ Walton, John C., Ahmad Arif Shahjahan, David LeMone, Saifuddin Ahmed,
and Aida Velasquez, Design of Concrete Vaults for Lower Cost and Improved Long
Term Performance, Waste Management 97’, University of Arizona, Session 27,
Number 3, Hydrogeologic and Geochemical Aspects of Waste Disposal (on CD-ROM),
1997.
82)
Johnson, F., M.P. Tavares, J.C. Walton, and C.D. Turner, Utilization of
Brine Reject to Promote Self-Sealing of Soil Medium, 1997 CSCE/ASCE
Environmental Engineering Conference, Editors: Stephen Stanley, Christopher
Ward, and Daniel Smith, Edmonton, Alberta, Canada, 22-26 July, 1997, published
by: Canadian Society for Civil Engineering, 2155 Guy St., Suite 840, Montreal,
PQ, H3H 2R9, 1997.
83)
 Walton, John, Masudur Rahman,
David Casey, Miguel Picornell, and Floyd Johnson, Leakage Through Flaws in
Geomembrane Liners, ASCE J. Geotechnical and Geoenvironmental Engineering,
Vol. 123., No. 6, p. 534-539, 1997.
84)
¬ Walton, J.C., R.W. Smith, A. Tarquin, P. Sheeley, R. Kalana, J. Gwynne,
N. Gutierrez, M.S. Bin-Shafique, M. Rodriquez, and R. Andrade, Role of
Carbonation in Long Term Performance of Cementitious Wasteforms, In: Mechanisms
of Chemical Degradation of Cement-based Systems, Edited by K.L. Scrivener and
J. F. Young, E&FN Spon, London, 1997.
85)
 Walton, J.C., MD. Sazzad
Bin-Shafique, Robert W. Smith, Neyda Guiterrez, Anthony Tarquin, Role of
Carbonation in Transient Leaching of Cementitious Wasteforms, Environmental
Science and Technology, 31, 2345-2349, 1997.
86)
Utz, Dennis, John Walton, Gregory Ohlmacher, Chari Bryan, Response of
Shallow Groundwater to Irrigation and Climate Stress: Mesilla and Hueco
Valleys, GSA Abstracts with Programs, Vol. 29, No. 2, February, 1997.
87)
Turner, C. J. Moncada, and J.C. Walton, Designing for Brine Reject
Utilization in a Desert Environment, American Water Works Association 1997
Membrane Technology Conference, February 1997.
88)
Gutierrez, N. S.Bin-Shafique, J.C. Walton, A. Tarquin, P. Sheeley, R.
Smith, M. Rodriguez, and R. Andrade, Effects of Carbonation on the Long-Term Leaching
Performance of Cementitious Wasteforms, 1996 HSRC/WERC/EPA Joint Conference on
the Environment Proceedings, p. 222-230,
www.engg.ksu.edu/HSRC/Proceedings.html, 1996.
89)
Walton, J.C., D. Casey, C. Anker, and D. LeMone, Optimization of
Contaminant Removal for Heterogeneous Systems by Soil Venting, 1996
HSRC/WERC/EPA Joint Conference on the Environment Proceedings, p. 268-278,
www.engg.ksu.edu/HSRC/Proceedings.html, 1966.
90)
 Walton, J.C. and C.B. Anker,
Secondary Effects of Soil Venting and Potential Low Cost Enhancements, Ground
Water Monitoring and Remediation, Vol: 16, No. 3, p. 91-97, 1996.
91)
Casey, D., J. Walton, C.B. Anker, and D. V. LeMone, Energy Considerations
and Soil Temperature Changes during Soil Vapor Extraction: Waste Management 96,
American Nuclear Society, International Atomic Energy Agency, United States
Department of Energy, and University of Arizona, Session 30 Environmental
Remediation, Paper 30-27, WM-96 CD-ROM, 4 figs., 11p., 1996.
92)
 Walton, J.C., G. Cragnolino, and
S.K. Kalandros, Numerical Modeling of Crevice Corrosion for Passive and Active
Metals, Corrosion Science, Vol. 38, No. 1, p. 1, 1996.
93)
Casey, D., J. Walton, C. Anker, and D. V. LeMone, Energy Considerations
and Soil Temperature Changes during Soil Vapor Extraction (Abst.): Southwest
Section of the American Association of Petroleum Geologists, Environmental
Sciences Division, Environmental Challenges at the Triple Point, p. 8.
(abstract and poster presentation), 1996.
94)
Walton, J., D. V. LeMone, and D. Casey. Coupling between Water Chemistry
and Thermal Output at Unsaturated Repositories: Southwest Section of the
American Association of Petroleum Geologists, Environmental Sciences Division,
Environmental Challenges at the Triple Point, p. 13. (abstract and poster
presentation), 1996.
95)
Codell, R.B., J.C. Walton, and B. Sagar, Source Term Module, in: R.G.
Wescott, M.P. Lee, N.A. Eisenberg, T.J. McCartin, R.G. Baca, editors, NRC
Iterative Performance Assessment Phase 2, NUREG-1464, 1995.
96)
John Walton, Anthony Tarquin, Robert Smith, Paul Sheeley, Ravishankar
Kalyana, Neyda Gutierrez, John Gwynne, Mayela Rodriquez, MD Sazzad
Bin-Shafique, Role of Carbonation in Long Term Performance of Cementitious
Wasteforms, Presented at: DOE Environmental Restoration Conference, August,
1995.
97)
Cragnolino, G., N. Sridhar, and J. Walton, An Approach to Analysis of
High-Level Nuclear Waste Container Performance In a Repository Under
Unsaturated Conditions, Corrosion/95 Conference Oral Presentation, March 26-31,
Orlando Florida, 1995.
98)
Walton, J., D. LeMone, and D. Casey, Coupling Between Water Chemistry and
Thermal Output at Unsaturated Repositories, in: High Level Radioactive Waste
Management: Proceedings of the Sixth Annual International Conference,
American Society of Civil Engineers, NY, NY, p. 382-384, 1995.
99)
 Lichtner, P.C, J. Song, T.Y.
Torng, and John Walton, SCCEX: A Computer Code for Substantially Complete
Containment Example Analysis of a Reference Container: Version 1.01, Center
for Nuclear Waste Regulatory Analyses, San Antonio, TX, January, 1995.
100)
 Walton, J., Influence of
Evaporation on Waste Package Environment and Radionuclide Release from a Tuff
Repository, Water Resources Research, Vol. 30, No. 12, pp. 3479-3487, 1994.
101)
 Walton, J.C., Performance of
Cementitious Waste Forms in Below Ground Vaults, ASCE Journal of
Environmental Engineering, Vol. 120, No. 6, p. 1507-1523, 1994.
102)
 Lichtner, Peter C. and John C.
Walton, Near Field Liquid-Vapor Transport in a Partially Saturated High-Level
Nuclear Waste Repository, CNWRA 94-022, 1994.
103)
 Torng, Tony, Peter Lichtner, and
John Walton, SCCEX: A Computer Code for Substantially Complete Containment
Example Analysis of a Reference Container, Center for Nuclear Waste
Regulatory Analyses, San Antonio, TX, July, 1994.
104)
 McNeil, M.B. and J. C. Walton,
Coupled Mass-Transport and Chemical-Equilibrium Modelling of Bronze Disease,
in: High Level Radioactive Waste Management: Proceedings of the Fifth Annual
International Conference, American Society of Civil Engineers, NY, NY, p.
1014-1019, 1994.
105)
 McCartin, T., R. Codell, R. Neel,
W. Ford, R. Wescott, J. Bradbury, B. Sagar, and J. Walton, Models for Source
Term, Flow, Transport, and Dose Assessment in NRC’s Iterative Performance
Assessment, Phase 2, in: High Level Radioactive Waste Management:
Proceedings of the Fifth Annual International Conference, American Society
of Civil Engineers, N.Y., N.Y., p. 1469-1479, 1994.
106)
 Smith, R.W., J.C. Walton, and M.
Rahman, Effects of Recrystallization on Time Variant Sorption of Radionuclides
onto Steel Corrosion Products, Mat. Res. Soc. Symp. Proc., Vol. 333, p.
713-718, 1994.
107)
 V. Colten-Bradley and J.C.
Walton, Preliminary Analysis of Potential Chemical Environments Inside Failed
Waste Containers at the Proposed Yucca Mountain Repository, Mat. Res. Soc.
Symp. Proc., Vol. 333, p. 755-759, 1994.
108)
 Walton, J.C., N. Sridhar, G.
Cragnolino, and T. Torng, An Approach to Analysis of High Level Waste Container
Performance in an Unsaturated Repository Environment, Mat. Res. Soc. Symp.
Proc., Vol. 333, p. 863-867, 1994.
109)
Casey, D.R., M. Rahman, J. Walton, and M. Picornell, Flow Rate Through
Flaws in Flexible Membrane Liners: A Complete Study of the Controlling Factors,
Proceedings of Fourteenth Annual American Geophysical Union Hydrology Days,
H.J. Morel-Seytoux, editor, Hydrology Days Publications, Atherton, CA, p.
23-30, 1994.
110)
 Sridhar, N., G.A. Cragnolino,
J.C. Walton, and D. Dunn, Prediction of Localized Corrosion Using Modeling and
Experimental Techniques, in Cragnolino and Sridhar Editors: Application of
Accelerated Tests to Service Life Prediction of Materials, ASTM, STP 1194,
Philadelphia, 1994.
111)
 Cragnolino, G. N. Sridhar, J.
Walton, R. Janetzke, T. Torng, J. Wu, and P. Nair, Substantially Complete
Containment – Example Analysis of a Reference Container, CNWRA 94-003,
1994.
112)
Seitz, R. and J.C. Walton, Modeling Approaches for Concrete Barriers
Used in Low-Level Waste Disposal, NUREG/CR-6070, EGG-2701, 1993.
113)
 Sridhar, N., J.C. Walton, G.A.
Cragnolino, and P.K. Nair, Engineered Barrier System Performance Assessment
Codes, (EBSPAC) Progress Report - October 1, 1992 Through September 25, 1993, Center
for Nuclear Waste Regulatory Analyses, San Antonio, Texas, 1993.
114)
 Walton, J.C., N. Sridhar, G.
Cragnolino, and P. Nair, Analysis of Waste Package Environment as Related to
Initiation and Propagation of Localized Corrosion, in (editors: D. Alexander,
R. Baker, R. Kokout, and J. Marek), Proceedings of the 1993 International
Conference on Nuclear Waste Management and Environmental Remediation, Vol. 1,
p. 247-252, 1993.
115)
 Walton, J. C., Effects of
Evaporation and Solute Concentration on Presence and Composition of Water in
and Around the Waste Package at Yucca Mountain, Waste Management, Vol.
13, pp. 293-301, 1993.
116)
 Seitz, R. R., J. C. Walton, C. A.
Dicke, and J. R. Cook, Near-Field Performance Assessment for the Saltstone
Disposal Facility, Mat. Res. Soc. Symp. Proc. Vol. 294, pp. 731-736,
1993.
117)
 Smith, R. W. and J. C. Walton,
The Role of Oxygen Diffusion in the Release of Technetium from Reducing
Cementitious Waste Forms, Mat. Res. Soc. Symp. Proc. Vol. 294, pp.
247-253, 1993.
118)
 Sagar, B., R. B. Codell, J. C.
Walton, and R. W. Janetzke, SOTEC: A Source Term Code for High-Level
Nuclear Waste Geologic Repositories, User’s Manual: Version 1.0, CNWRA
92-009, Center for Nuclear Waste Regulatory Analyses, San Antonio, Texas, 1992.
119)
 Walton, J. C. and S. K.
Kalandros, Mariana - A Simple Chemical Equilibrium Module, CNWRA
92-020, 1992.
120)
 Walton, J. C. and S. K.
Kalandros, Twitch - A Model for Transient Diffusion, Electromigration, and
Chemical Reaction in One Dimension, CNWRA 92-019, 1992.
121)
Seitz, R. R., J. C. Walton, and C. A. Dicke, Performance Assessment
Approach for Modeling Flow and Transport Through Cracked Concrete Waste Forms,
Second Engineering Technology Conference on Waste Management and Environmental
Restoration, April 9-11, 1992, San Juan, Puerto Rico, pp. 469-478, 1992.
122)
Walton, J. C., Performance of Intact and Partially Degraded Concrete
Barriers in Limiting Mass Transport, NUREG/CR-5445, June, 1992.
123)
Andrews, G.F., J. Walton, R. Larsen, R. Shimskey, S.G. Hansen, and F. S.
Colwell. “The Design of In-situ Bioremediation.” Proceedings of the
International Topical Meeting on Nuclear and Hazardous Waste Management,
Spectrum ‘92, American Nuclear Society, pp. 1024-1028, August 23-27, 1992
124)
Walton, J. C., Performance of Monolithic Concrete Waste Forms,
Waste Management ‘92, University of Arizona, pp. 1453-1457, 1992.
125)
 Walton, J.C., and R. W. Smith,
Discussion of “Thermodynamic Framework for Degradation of Polycyclic Aromatic
Hydrocarbons in the Subsurface,” Ground Water, Vol, 30, No. 4, pp.
624-625, 1992.
126)
Walton, J. C. and R. R. Seitz, Hydraulic Performance of Cracked
Concrete Containers, Proceedings of the Topical Meeting on Nuclear Waste
Packaging, Focus ‘91, American Nuclear Society, p. 300-306, 1991.
127)
 Walton, J. C. and R. R. Seitz,
Fluid Flow Through Fractures in Below Ground Concrete Vaults, Waste Management,
Vol. 12 pp. 179-187, 1992.
128)
 Walton, J. C., Fluid Flow and
Placement of Concrete Vaults in the Saturated or Unsaturated Zone, Waste
Management, Vol. 11, p. 3-10, 1991.
129)
Walton, J. C. and R. R. Seitz, Performance of Intact and Partially
Degraded Concrete Barriers in Limiting Fluid Flow, NUREG/CR-5614, 1991.
130)
 Smith, R. W. and J. C. Walton,
The Effects of Calcite Solid Solution Formation on the Transient Release of
Radionuclides from Concrete Barriers, Mat. Res. Soc. Symp. Proc., Vol.
212, p. 403-409, 1991.
131)
 Rawson, S. A., J. C. Walton, and
R. G. Baca, Migration of Actinides from a Transuranic Waste Disposal Site in
the Vadose Zone, Radiochemica Acta, 52/53, 477-486, 1991.
132)
 Walton, J. C., Corrosion Cells:
An Important Factor in Localized Waste Package Geochemistry?, Nuclear
Technology, Vol. 94, p. 114-123, 1991.
133)
Walton, J. C., R. G. Baca, J. B. Sisson, A. J. Sondrup, and S. O.
Magnuson, Application of Computer Simulation Models to Design Large-Scale
Soil Venting and Bioremediation Systems, in Proceedings, Symposium on Soil
Venting, April 29-May1, 1991, Houston, TX, D. DiGiulio, project officer, U.S.
EPA Report EPA/600/R-92/174, 1992, p. 91.
134)
Walton, J. C. and R. W. Smith, Calcite Solid Solution Formation and
Carbonation Effects on the Radionuclide Release from Concrete Waste Forms, Waste
Management 91', University of Arizona, p. 343-349, 1991.
135)
Walton, J.C., Mathematical Models of Waste Isolation Performance, Ph.D.
Thesis, University of Idaho, 1991.
136)
Walton, J. C., and L. E. Plansky, Evaluation of Concrete Barrier
Performance in Different Geochemical Environments, Spectrum '90, Nuclear
and Hazardous Waste Management International Topical Meeting, 1990.
137)
Walton, J. C., Hydrologic Considerations for Placement and Design of
Disposal Facilities, presented at: US DOE Low-Level Waste Management
Conference, Chicago, IL, August 28-29, 1990.
Reported in The Radioactive Exchange, p. 12, September 18, 1990.
138)
 Walton, J. C., Leakage Rates
Through Flaws in Membrane Liners - Discussion, ASCE Journal of Environmental
Engineering, Vol. 116, No. 5, p. 1004-1006, 1990.
139)
Walton, J. C., L. E. Plansky, and R. W. Smith, Models for Estimation
of Service Life of Concrete Barriers in Low-Level Radioactive Waste Disposal,
NUREG/CR-5542, 1990.
140)
Andrews, G., F. Colwell, and J. Walton, A Rational Design Procedure
for In-Situ Bioremediation, presented at: Conference on Hazardous
Waste Research, Kansas State Univ., Manhattan, KS, May 21-22, 1990.
141)
 Walton, J. C. and B. Sagar,
Aspects of Fluid Flow Through Small Flaws in Membrane Liners, Environmental
Science and Technology, Vol. 24, No. 6, p. 920-924, 1990.
Summarized in “Ground Water in the News”, Ground Water, p. 838,
Sept.-Oct., 1990.
Summarized in The Groundwater Newsletter, Vol. 19, No. 11, p. 5, 1990.
142)
 Walton, J. C., Mathematical Modeling
of Mass Transport and Chemical Reaction in Crevice and Pitting Corrosion, Corrosion
Science, Vol. 30, No. 8/9, p. 915-928, 1990.
143)
Walton, J. C., R. G. Baca, J. B. Sisson, and T. R. Wood, Application
of Soil Venting at a Large Scale: A Data and Modeling Analysis, in: Fourth
National Outdoor Action Conference on Aquifer Restoration, Ground Water
Monitoring, and Geophysical Methods, National Water Well Association, Dublin,
Ohio, p. 619-632, 1990.
144)
 Walton, J. C., Theoretical
Modeling of Crevice and Pitting Corrosion Processes in Relation to Corrosion of
Radioactive Waste Containers, Mat. Res. Soc. Symp. Proc., Vol. 176, p.
509 - 516, 1990.
145)
Baca, R. G., J. C. Walton, and J. B. Sisson, Fluids Modeling for Waste
Management, presented at: 1990 annual Symposium on Engineering Geology
& Geotechnical Engineering, Pocatello, Idaho, April 4-6, 1990.
146)
Walton, J. C., Influence of Coupled Processes on Waste Package
Geochemistry, Proceedings of the Topical Meeting on Nuclear Waste Isolation
in the Unsaturated Zone Focus 89', American Nuclear Society, La
Grange Park, Illinois, p. 3 - 9, 1990.
147)
 Walton, J. C., and M. D. Otis,
Concrete Barrier Performance in Radioactive Waste Disposal in the Unsaturated
Zone, Mat. Res. Soc. Symp. Proc., Vol. 176, p. 711 - 717, 1990.
148)
Sisson, J. B., R. G. Baca, J. C. Walton, and R. C. Arnett, Monitoring
Plan for the Vapor Vacuum Extraction Demonstration, EG&G Idaho,
EGG-WM-8856, 1990.
149)
Rawson, S. A., J. C. Walton, and R. G. Baca, Modeling Potential
Migration of Petroleum Hydrocarbons from a Mixed-Waste Disposal Site in the
Vadose Zone, in: Petroleum Hydrocarbons and Organic Chemicals in
Groundwater: Prevention, Detection, and Restoration, National Water Well
Association, Dublin, Ohio, p. 357 - 371, 1989.
150)
Walton, J. C., and M. D. Otis, Performance of Concrete Barriers in
Radioactive Waste Disposal in the Unsaturated Zone, in: Fractal Aspects of
Materials - 1989, Mat. Res. Soc. Symp. Proc., Pittsburgh, Pennsylvania,
p. 91-94, 1989.
151)
Rawson, S. A., J. C., Walton, and R. G. Baca, Geochemical Control on
Migration of Actinides from a Transuranic Waste Disposal Site in the Vadose
Zone, Presented at: Second International Conference on Chemistry and
Migration Behavior of Actinides and Fission Products in the Geosphere,
sponsored by Lawrence Livermore National Laboratory, Monterey, California,
November 1989.
152)
 Walton, J. C., Letter to the
Editor, Waste Management, Vol. 9, pp. 195-198, 1989.
153)
Walton, J. C., R. G. Baca, and T. L. Rasmussen, Flow and Transport of
Radionuclides in Unsaturated Fractured Basalt, in: Post, R.G., editor, Proceedings
of the Symposium on Waste Management '89, University of Arizona, Tucson,
Arizona, p. 775-780, 1989.
154)
Baca, R. G., J. C. Walton, S. O. Magnuson, and R. R. Piscitella, Modeling
Contaminant Migration from a Mixed Waste Disposal Site: Studies of Controlling
Factors and Processes, presented at: American Nuclear Society Annual
Meeting, Atlanta, Georgia, June, 1989. This paper received the Best Paper
Award for the conference.
155)
Walton, J. C., R. G. Baca, and M. A. Lintner, Analysis of Organic
Contaminant Release and Migration from the INEL Radioactive Waste Management
Complex: Past, Present, and Future, presented at: Idaho Academy of
Science, 31st Annual Symposium, Idaho Falls, April, 1989.
156)
Baca, R. G., J. C. Walton, and M. A. Lintner, Use of Computer
Simulation for Evaluating Remedial Actions for Organic Vapor Problems, Presented
at: Geoprocessing and Surveying Conference, Boise, Idaho, March, 1989.
157)
 Walton, J. C., A. S. Rood, R. G.
Baca, and M. D. Otis, Model for Estimation of Chlorinated Solvent Release from
Waste Disposal Sites, Journal of Hazardous Materials, Vol. 21, No. 1, p.
14-34, 1989.
158)
Rawson, S. A. and J. C. Walton, Potential Significance of Texaco Regal
Oil to Contaminant Migration at the Subsurface Disposal Area: A Progress
Report, EGG-ER-8706, 1989.
159)
Baca, R. G., J. C. Walton, and A. S. Rood, Computer Simulation Study
of Contaminant Migration through the Subsurface Environment, Presented
at: Second Annual INEL Computing Symposium, Idaho Falls, Idaho, 1988.
160)
 Walton, J. C., Mathematical
Modeling Of Large-Scale Nonuniform Corrosion: Coupling of Corrosion, Transport,
and Geochemical Processes in Nuclear Waste Isolation, Nuclear and Chemical
Waste Management, Vol. 8, No. 2, p. 143-156, 1988.
161)
Baca, R. G., J. C. Walton, A. S. Rood, and M. D. Otis, Organic
Contaminant Release From a Mixed Waste Disposal Site: A Computer Simulation
Study of Transport Through the Vadose Zone and Site Remediation, Proceedings
of the Tenth Annual DOE Low-Level Waste Management Forum, Denver,
CO, CONF-880839-Ses. II, p. 113-125, 1988.
162)
Baca, R. G., J. C. Walton, A. S. Rood, and S. M. Burns, Modeling of
Organic Constituents at the Idaho National Engineering Laboratory Waste
Management Complex, Presented at: American Chemical Society,
Northwest Regional Meeting, July, 1988.
163)
Walton, J. C., Mathematical Modeling of Galvanic Corrosion Cells:
Coupling of Corrosion and Geochemical Processes in Nuclear Waste Isolation,
M.S. Thesis, University of Washington, 1988.
164)
Baca, R. G. and J. C. Walton, Preliminary Conceptual Models of
Contaminant Migration at the RWMC, EG&G Idaho Report #EGG-WM-8023,
March, 1988.
165)
 Walton, J. C. and B. Sagar,
Modeling Performance of Steel Containers in High Level Waste Repository
Environments: Implications for Waste Isolation, Radioactive Waste Management
and the Nuclear Fuel Cycle, Vol. 9, No. 4, p. 323 - 347, 1988.
166)
Walton, J. C., M. S. Bensky, M. E. Mease, and T. J. Bander, Sensitivity
of Radionuclide Transport in Groundwater to Source and Site Characteristics, in
Post, R.G., Editor, Proceedings of the Symposium on Waste Management '88,
University of Arizona, Tucson, Arizona, p. 269 - 276, 1988.
167)
Dwyer, J. R., J. C. Walton, W. E. Greenberg, and R. Clark, Evaluation
of Municipal Solid Waste Landfill Cover Designs, EPA/600/S2-86/110, (Order
No. PB 88-171 327/AS), Apr., 1988.
168)
Walton, J. C., and B. Sagar, Mathematical Modeling of Copper Container
Corrosion: The Transport Limited Approach, in Post, R.G., editor, Proceedings
of the Symposium on Waste Management '88, University of Arizona, Tucson,
Arizona, p. 711 - 717, 1988.
169)
 Walton, J. C. and B. Sagar, A
Corrosion Model for Nuclear Waste Containers, Mat. Res. Soc. Symp. Proc.,
Vol. 84, p. 271 - 282, 1987.
170)
Walton, J. C., Quantitative Measures of Risk from Nuclear Safety
Analysis, presented at: American Nuclear Society, Regional Meeting,
Denver, Colorado, May, 1985.
171)
Walton, J. C., Redox Equilibria in a Fresh Water Lake, M.S.
Thesis, University of Virginia, 1981.