Curriculum Vitae
John C. Walton, Ph.D., P.E.
Ph: (915) 747-8699
Email:
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)
Public and University Service
EPWU, Stormwater
Community Advisory Committee
TRB, NAS HMCRP06 Review
Panel
City of El Paso Arroyos
Committee
Frontera Land Alliance,
Advisory Board
Chair, UTEP Graduate
Council, 2007 – 2009
Chair, Faculty Welfare
Committee, 2008 -
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.
Chairman for PhD Students
8/96 Rudy Antonio Machorro
Sagastume, Water Quality at Lago de Izabal, Guatemala: Geochemical
Characterization and Assessment of Trophic Status, Ph.D. Thesis in Geology
(co-chair with Phillip Goodell).
5/01 Huanmin Lu, Zero Discharge
Desalination, Ph.D. Dissertation.
5/01 Juan W. Santiago Clague Romero,
Experimental and Theoretical Investigation of the Mobilization,
Immobilization and Sequestration of Subsurface Metals Through Manipulation of Carbonate
Equilibria, Ph.D. Dissertation (co-chair with N. Pingitore).
12/02 Francisco Martinez, Influence
of Solar Radiation Factors on Desert Flora Site Selection, Ph.D.
Dissertation.
5/03 Juan Gomez, Mobilization and
Immobilization of Heavy Metals in Contaminated Soils by CO2 Partial Pressure Manipulation, Ph.D. Dissertation.
5/03 Reneé Hilton, Removal of
Heavy Metals from Soils with Fulvic Acid Fractions, EDTA, and Citrate Chelates,
Ph.D. Dissertation.
5/04 Jaime Romero, Adsorption of
Cr from Aqueous Solution onto Agave lechuguilla biomass, Ph.D.
Dissertation.
12/04 Robert Rice, Risk Prediction
and Design of Disposal Systems, Ph.D. Dissertation.
12/04 Jose Humberto Garcia, Determination
of PM Compositions and Sources in the
5/06 Bill Hutchison, Groundwater
Management in El Paso, Texas, Ph.D. Dissertation.
5/08 Gautam Agrawala, Regional
Groundwater Interpretation using Multivariate Statistical Methods, Ph.D.
Dissertation.
12/08 Arturo Woocay, Multivariate
Analysis of Groundwater Chemistry, Ph.D. Dissertation
Professional Activities and
Consulting (last 10 years)
1993 -1999 Southwest Research Institute; Waste
package performance assessment; modeling of coupled processes; container
corrosion; waste package environment.
1995 Electric Power Research
Institute;
1995-1996 Chem-Nuclear, Inc.; Degradation of
concrete canisters and poly liners for North Carolina Low Level Radioactive
Waste site.
1998 El Paso Water Utilities;
External expert for review of hydrogeology examination.
1998 Idaho National Engineering and
Environmental Laboratory; Expert panel on vadose zone processes and modeling.
1998 - 1999 Sandia National Laboratories; Yucca
Mountain High Level Nuclear Waste Repository, near field geochemistry.
1996 - 2000 US Department of Justice; Expert witness on
issues of contaminant transport. To date I have worked on three cases covering
ground water contamination and air pollution.
2000 - Portage Environmental; Degradation
assessment of high level waste steel tank and vaults at the INL.
2001 -
2002 - 2005 Resolution Law Group, Expert witness,
hydrogen sulfide exposure.
2006 - Expert witness on El Paso
flooding.
2008 US Department of Energy; Expert Review
Panel for Tank Farm F Performance Assessment.
2009 US Department of Energy; Expert
Review Panel for Saltstone Performance Assessment.
Publications and
Presentations
 = refereed publication
1)
Al-Qudah, O.M., J.C. Walton and A. Woocay (2009).
Precipitation and Surface-Runoff Sampling in the Arid Regions – New Lysimeter
Techniques. Eos Trans.
2) Al-Qudah, O.M., J.C. Walton, and A. Woocay Chemical Fingerprint of Surface-Runoff on Groundwater Recharge in the Arid Regions. C-4 Talk presented at: 2009 New Mexico Water Research Symposium, Socorro, NM, August 14, 2009. http://wrri.nmsu.edu/publish/sympabs/presentations2009.pdf
3) Hamdan, L.K., J.C. Walton and A. Woocay (2009). Unsaturated Zone Nuclear Waste Repository – A Safety Case Poster presented at: Devil’s Hole Workshop, Furnace Creek, CA, May 6-7, 2009.
4) Al-qudah, O., J.C. Walton, and A. Woocay (2009). Surface Runoff Chemistry in the Amargosa Desert. Presented at: Devil’s Hole Workshop, Furnace Creek, CA, May 6-7, 2009.
5)
Al-Qudah, O.M., J.C. Walton and A. Woocay (2009). Processes
Controlling Groundwater Recharge in the Amargosa Desert. Talk 394 presented at:
65rd Southwestern Regional Meeting of the American Chemical Society
(ASC), El Paso, TX, November 4-7, 2009.
http://acs.confex.com/acs/swrm09/webprogram/Paper77113.html
6)
Hamdan, L.K., J.C. Walton and A. Woocay (2009).
Chemical and Physical Status of Water Pooled in a Failed Nuclear Waste
Container. Talk 426 presented at: 65rd Southwestern Regional Meeting
of the American Chemical Society (ASC), El Paso, TX, November 4-7, 2009.
http://acs.confex.com/acs/swrm09/webprogram/Paper76634.html
7)
Woocay, A., and J.C. Walton (2009). Isotopic evidence
of past focused infiltration at Fortymile Wash. Geological Society of America Abstracts with Programs, Vol. 41, No.
7, p. 30. Talk in Session No 3 Paper 15. Portland, OR, October 18-21, 2009. ISSN:
0016-7592
8) Al-Qudah, O.M., J.C. Walton, and A. Woocay Chemical evolution of groundwater in the Amargosa Desert. Geological Society of America Abstracts with Programs, Vol. 41, No. 7, p. 218. Talk in Session No 77 Paper 5. Portland, OR, October 18-21, 2009. ISSN: 0016-7592
9) Hamdan, L.K., J.C. Walton and A. Woocay (2009). A case study for the performance of a nuclear geological repository in the unsaturated zone. Geological Society of America Abstracts with Programs, Vol. 41, No. 7, p. 89. Poster in Session 27 Paper 15. Portland, OR, October 18-21, 2009. ISSN: 0016-7592
10)
Hamdan, L.K., J.C. Walton and A. Woocay (2008). Conditions
inside Water Pooled in a Failed Nuclear Waste Container and its Effect on
Radionuclide Release. Eos Trans.
11) Woocay, A., and J.C. Walton. Evidencia Isotópica de Infiltración Concentrada Pretérita en Fortymile Wash. Presented at the 2nd Annual CIPITECH conference, held in Delicias, CHIH, MX., on September 24, 2009. ISBN 978-4276-4108-3.
12) Al-qudah, O., J.C. Walton, and A. Woocay. (2009). Investigation and Classification of Groundwater Redox Conditions in the Vicinity of Yucca Mountain. World Environmental and Waste Resources Congress 2009: Grest Rivers. Presented May 17-21, 2009, Kansas City, Missouri. Publisher: ASCE. ISBN13: 9780784410363
13) Â Hamdan, L., J.C. Walton, and A. Woocay. 2009. Effect of Physical Processes on Radionuclide Release from Partially Failed Containers. Talk presented at: Waste Management Symposium 2009: Waste Management for the Nuclear Renaissance, Mar 1-5, 2009. Session 57. Publisher: Curran Associates, Inc. (Oct 2009) Pages: 5,143 (8 Vols) ISBN13: 9781615672523
14) Al-Qudah O.M., A. Woocay and J.C. Walton,. “Groundwater Oxidizing and Reducing Conditions Near Yucca Mountain.” Eos Trans. AGU, 89(53), Fall Meet. Suppl., Abstract H51B-0803, 2008. Presented at: American Geophysical Union Fall Meeting, San Francisco, CA, December 19, 2008.
15) Hamdan, L.K., J.C. Walton and A. Woocay. (2008). “Conceptual Model for Radionuclide Release from the Engineered Barrier Systems (EBS) at Yucca Mountain.” Eos Trans. AGU, 89(53), Fall Meet. Suppl., Abstract H53E-1130, 2008. Presented at: American Geophysical Union Fall Meeting, San Francisco, CA, December 19, 2008.
16)
 Hamdan, L.
K. and J.C. Walton,. “Limitations on Radionuclide Release from Partially Failed
Containers” Paper #: 1124-Q08-07, Abstract# 512698. Talk presented at 2008
Materials Research Society (MRS) Fall Meeting, Boston, MA, December 4, 2008.
DOI: 10.1557
17)
 Rice, R.
W. and J. C. Walton, Factors Affecting Risk Predictions: Can Some Risk Metrics
be More Accurately Predicted Than Others?, Nuclear
Technology, Vol. 163, No. 1, p. 15-23,
2008.
18)
 Woocay
A. and J. C. Walton, Multivariate Analyses of Water Chemistry: Surface and
Ground Water Interactions, Ground Water, Vol. 46, No. 3, pp. 437–449, 2008
19)
 Romero-Gonzalez,
J., J.C.Walton, J.R. Peralta-Videa, E. Rodrıguez, J. Romero, J.L.
Gardea-Torresdey, Modeling the adsorption of Cr(III) from aqueous solution onto
Agave lechuguilla biomass:
Study of the advective and dispersive transport , Journal of Hazardous
Materials, Vol, 161, Issue 1, pp. 360-365, 2009.
20)
 Danko, G., Walton, J., and Bahrami, D., Increased
Storage Capacity at Yucca Mountain Favors Thermal Management for A Cold
Repository., Nuclear Technology, Vol.
163, No. 1, p. 47-61, 2008.
21) Â Woocay, A., and J.C. Walton. 2008. Infiltration history at Fortymile Wash. International High-Level Radioactive Waste Management Conference (IHLRWMC), Las Vegas, Nevada. La Grange Park, Illinois: American Nuclear Society. September 7-11, 2008, p. 41-46. ISBN: 978-0-89448-062-1
22) Â Al-Qudah, O., A. Woocay, and J.C. Walton. 2008. Yucca Mountain Region Groundwater Geochemical Data Analyses. International High-Level Radioactive Waste Management Conference (IHLRWMC), Las Vegas, Nevada. La Grange Park, Illinois: American Nuclear Society. September 7-11, 2008, p. 87-94. ISBN: 978-0-89448-062-1
23) Â Hamdan, L.K., J.C. Walton, and A. Woocay. 2008. Limitations and patters of radionuclide release from partially failed containers. International High-Level Radioactive Waste Management Conference (IHLRWMC), Las Vegas, Nevada. La Grange Park, Illinois: American Nuclear Society. September 7-11, 2008, p. 348-351. ISBN: 978-0-89448-062-1
24) Â Rice, R.W., and J.C. Walton. 2008. Numerical Illustration: Effects of Uncertainty and Bias on Risk Predictions. International High-Level Radioactive Waste Management Conference (IHLRWMC), Las Vegas, Nevada. La Grange Park, Illinois: American Nuclear Society. September 7-11, 2008, p. 588-592. ISBN: 978-0-89448-062-1
25) Pekar, K., J.C. Walton, and P. Goodell. 2008. Modeling of Transport Rates Through Unsaturated Soil at Peña Blanca. International High-Level Radioactive Waste Management Conference (IHLRWMC), Las Vegas, Nevada. La Grange Park, Illinois: American Nuclear Society. September 7-11, 2008, p. 196-203. ISBN: 978-0-89448-062-1
26) Walton, J.C., Fate and Transport of Contaminants in the Environment, College Publishing, Glen Allen, Virginia, ISBN: 1-932780, 2008, (textbook)
27)
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).
28) Walton, J.C., L.K. Hamdan, and A. Woocay. 2008. “Controlling Features and Processes for Radionuclide Release from Yucca Mountain.” Presented at: Devil’s Hole Workshop, Furnace Creek, CA, May, 2008.
29) Al-Qudah, O., A. Woocay, and J.C. Walton. “Geochemical Characterization of Groundwater in Yucca Mountain Region.” Presented at: Devil’s Hole Workshop, Furnace Creek, CA, May, 2008.
30)
Walton, John, August
2006 El Paso Flooding: Technical and Policy Factors, Universities Council on
Water Resources, Boise Idaho, Plenary Speaker, July, 2007.
31)
Woocay, A., and J.C. Walton, (2007). “Climate
Change Effects on Groundwater Recharge East of Yucca Mountain.” Eos Trans.
32)
Walton, John, A. Jaimes and A. Woocay, (2007). “Infiltration
History and Spatial Variability Derived from Chloride Mass Balance.” Eos
Trans.
33)
Agrawala G.K., A. Woocay and J.C. Walton, (2007). “Statistical
and Spatial Analysis of Borderland Ground Water Geochemistry.” Eos Trans.
34)
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.
35)
 Bahrami,
D., G. Danko, and J. Walton, Water, Vapor, and Salt Dynamics in a Hot
Repository, Materials Research Society , Scientific Basis for Nuclear Waste
Management XXX, Editors: Darrrell Dunn, Christophe Poinssot, and Bruce Begg,
Materials Research Society, Pennsylvania, 2007.
36)
 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.
37)
Woocay, Arturo
and Walton, John C., (2006), Groundwater Chemistry Analysis by Multivariate
Statistical Methods, Eos Trans.
38)
 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.
39)
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,
40)
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.
41)
Agrawala, Gautam
K., Woocay, Arturo and
42)
Agrawala, Gautam
K. and
43)
Agrawala, Gautam
K and
44)
 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.
45)
 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.
46)
 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
47)
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.
48)
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
49)
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.
50)
Woocay, Arturo
and Walton, John C., Infiltration Dates Derived from Chloride
Mass Balance, Poster presented at: Devil’s Hole Workshop,
51)
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.
52)
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.
53)
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.
54)
Woocay, Arturo
Walton, John C., and King, Michael, Multivariate
Statistical Methods Applied to Interpretation of Hydrological Data,
Presented at: 2005
55)
Woocay, Arturo
and Walton, John C., Focused
Infiltration Effects on
56)
Woocay, Arturo
and John Walton, (2005), Statistical
Analysis of
57)
Agrawala, Gautam
K. and
58)
Agrawala, Gautam
K. and
59)
 Romero-Gonzalez, J., Cano-Rodriguez,
60)
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.
61)
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,
62)
Walton, John
and Woocay, Arturo, (2005),
63)
 Li, W. -W., N. Cardenas, R. Arimoto, J. Walton, D.
Trujillo, H. Morales. 2004. PM source identification at
64)
 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.
65)
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
66)
A. Woocay and
J. Walton, Multivariate Analysis of
67)
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.
68)
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.
69)
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,
70)
Arimoto, R.,
W.-W. Li, N. Cardenas, J. Walton, D.
71)
 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
72)
Danko, George,
Davood Bahrami, and John Walton, Status of Nye County Ventilation Studies, Invited
presentation to: Nuclear Waste Technical Review Board, January 19, 2004,
73)
 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.
74)
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,
75)
Hall, Drew and
John Walton, Patterns and Trends in the Water Chemistry of Nye
76)
Hall, Drew and
John Walton,
77)
Walton, John
and Drew Hall, Evaporation, Reconstitution, and Water Chemistry, Invited
presentation at: NRC and DOE Performance Assessments: Assumptions and
Differences,
78)
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.
79)
 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.
80)
Â
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).
81)
Lu, H., J.
Walton, S. Irvine, and H. Remmers, Memorandum Report: Conceptual Application
and Feasibility of Salinity Gradient Solar Pond Technology in
82)
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.
83)
Walton, John
and
84)
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
85)
Lu, Huanmin,
John Walton, Andrew Swift, and Herbert Hein, Fundamentals of Solar Pond
Operation and Technology Advancements at the
86)
Walton, John
and Huanmin Lu, Solar Pond Coupled Desalination and Electricity Production,
Presented at: Euromed Conference on Solar Ponds,
87)
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.
88)
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.
89)
Walton, John,
Upstream Water Reuse and Development Impacts on Rio Grande Water Quality, The
Southwest Center for Environmental 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.
90)
 Lu, H.,
J. Walton and A. Swift, "Desalination Coupled with Salinity-Gradient Solar
Ponds," Desalination 136 (2001) 13-23.
91)
 Walton,
John and Gregory Ohlmacher, Surface and Ground Water Interactions:
92)
Walton, J.C.,
H. Lu, C. Turner, A. Swift, Desalination in the
93)
 Lu, H.
J. Walton and A. Swift, "Zero Discharge Desalination," Desalination
& Water Reuse, Vol. 10. No. 3, November/December 2000.
94)
 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.
95)
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.
96)
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
97)
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.
98)
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).
99)
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).
100)
 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.
101)
 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.
102)
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.
103)
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.
104)
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.
105)
Turner, C. D.,
J. C. Walton, J. D. Moncada, M. Tavares, Brackish Groundwater Treatment and
Concentrate Disposal for the
106)
 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.
107)
 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.
108)
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.
109)
Walton, John, Gregory
Ohlmacher, and Dennis Utz, Surface/Ground Water Interactions and Water Quality
Along the
110)
Walton, John,
Water Quality and Coupling between Surface and Ground Water: West Texas,
Southern New Mexico, and Northern Chihuahua, Presented at:
111)
¬ 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.
112)
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.
113)
 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.
114)
¬ 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.
115)
 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.
116)
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.
117)
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.
118)
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.
119)
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.
120)
 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.
121)
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.
122)
 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.
123)
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.
124)
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.
125)
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.
126)
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.
127)
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,
128)
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.
129)
Â
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,
130)
 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.
131)
 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.
132)
 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.
133)
 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,
134)
 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.
135)
Â
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.
136)
 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.
137)
 V.
Colten-Bradley and J.C. Walton, Preliminary Analysis of Potential Chemical
Environments Inside Failed Waste Containers at the Proposed
138)
 Walton,
J.C.,
139)
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.
140)
 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.
141)
Â
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.
142)
Seitz, R. and
J.C. Walton, Modeling Approaches for Concrete Barriers Used in Low-Level
Waste Disposal, NUREG/CR-6070, EGG-2701, 1993.
143)
 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,
144)
 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.
145)
 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.
146)
 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.
147)
 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.
148)
 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,
149)
 Walton,
J. C. and S. K. Kalandros, Mariana - A Simple Chemical Equilibrium Module,
CNWRA 92-020, 1992.
150)
 Walton,
J. C. and S. K. Kalandros, Twitch - A Model for Transient Diffusion,
Electromigration, and Chemical Reaction in One Dimension, CNWRA 92-019,
1992.
151)
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.
152)
Walton, J. C.,
Performance of Intact and Partially Degraded Concrete Barriers in Limiting
Mass Transport, NUREG/CR-5445, June, 1992.
153)
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
154)
Walton, J. C.,
Performance of Monolithic Concrete Waste Forms, Waste Management ‘92,
University of
155)
 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.
156)
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.
157)
 Walton,
J. C. and R. R. Seitz, Fluid Flow Through Fractures in Below Ground Concrete
Vaults, Waste Management, Vol. 12 pp. 179-187, 1992.
158)
 Walton,
J. C., Fluid Flow and Placement of Concrete Vaults in the Saturated or
Unsaturated Zone, Waste Management, Vol. 11, p. 3-10, 1991.
159)
Walton, J. C.
and R. R. Seitz, Performance of Intact and Partially Degraded Concrete
Barriers in Limiting Fluid Flow, NUREG/CR-5614, 1991.
160)
 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.
161)
 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.
162)
 Walton,
J. C., Corrosion Cells: An Important Factor in Localized Waste Package
Geochemistry?, Nuclear Technology, Vol. 94, p. 114-123, 1991.
163)
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.
164)
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.
165)
Walton, J.C.,
Mathematical Models of Waste Isolation Performance, Ph.D. Thesis,
166)
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.
167)
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.
168)
 Walton,
J. C., Leakage Rates Through Flaws in Membrane Liners - Discussion, ASCE
Journal of Environmental Engineering, Vol. 116, No. 5, p. 1004-1006, 1990.
169)
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.
170)
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.,
171)
 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.
172)
 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.
173)
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.
174)
 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.
175)
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,
176)
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,
177)
 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.
178)
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.
179)
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.
180)
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.,
181)
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.
182)
 Walton,
J. C., Letter to the Editor, Waste Management, Vol. 9, pp. 195-198,
1989.
183)
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.
184)
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.
185)
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.
186)
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.
187)
 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.
188)
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.
189)
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.
190)
 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.
191)
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.
192)
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.
193)
Walton, J. C.,
Mathematical Modeling of Galvanic Corrosion Cells: Coupling of Corrosion and
Geochemical Processes in Nuclear Waste Isolation, M.S. Thesis,
194)
Baca, R. G.
and J. C. Walton, Preliminary Conceptual Models of Contaminant Migration at
the RWMC, EG&G
195)
 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.
196)
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.
197)
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.
198)
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.
199)
 Walton,
J. C. and B. Sagar, A Corrosion Model for Nuclear Waste Containers, Mat.
Res. Soc. Symp. Proc., Vol. 84, p. 271 - 282, 1987.
200)
Walton, J. C.,
Quantitative Measures of Risk from Nuclear Safety Analysis, Presented
at: American Nuclear Society, Regional Meeting, Denver, Colorado, May,
1985.
201)
Walton, J. C.,
Redox Equilibria in a Fresh Water Lake, M.S. Thesis, University of
Virginia, 1981.