**[Clifford K. Ho]{.smallcaps}**

+-----------------------------------------+----------------------------+
| **Home Address:**                       | > **Work Address:**        |
|                                         | >                          |
| 6324 Elk Horn Dr. NE                    | > Sandia National          |
|                                         | > Laboratories             |
| Albuquerque, NM 87111                   | >                          |
|                                         | > P.O. Box 5800, MS-0735   |
| \(505\) 237-2668                        | >                          |
|                                         | > Albuquerque, NM          |
|                                         | > 87185-0735               |
|                                         | >                          |
|                                         | > \(505\) 844-2384         |
+-----------------------------------------+----------------------------+

Citizenship: United States

Education

University of California at Berkeley

**Ph.D.** Mechanical Engineering, May, 1993. G.P.A \~ 3.9/4.0

*Courses*: Emphasis in heat and mass transfer, fluid dynamics, and
engineering analysis (numerical methods and applied math)

*Thesis*: "Evaporation of Multicomponent Hydrocarbon Liquids in Porous
Media"

*Advisor*: Professor Kent S. Udell

**M.S.** Mechanical Engineering, December, 1990

*Project*: "A Mass Transfer Model for the Removal of a Volatile Organic
Compound from Heterogeneous Porous Media During Vacuum Extraction"

*Advisor*: Professor Kent S. Udell

University of Wisconsin---Madison

**B.S.** Mechanical Engineering, May, 1989. G.P.A. \~ 3.9/4.0

Research Experience

Sandia National Laboratories - Albuquerque, New Mexico (6/93-Present)

*Senior Member of Technical Staff (1993-1997)*

*Principal Member of Technical Staff (1997-2003)*

*Distinguished Member of Technical Staff (2003-Present)*

-   Develop microchemical sensor systems and novel characterization
    methods for real-time, continuous, in-situ sensing of volatile
    organic compounds
    ([www.sandia.gov/sensor](http://www.sandia.gov/sensor))

-   Evaluate sensors and methods for detecting trace explosives for
    Homeland Security

-   Perform probabilistic analyses of heat- and mass-transfer
    applications using stochastic methods for risk and performance
    assessment for long-term waste isolation
    ([www.sandia.gov/caps](http://www.sandia.gov/caps))

-   Develop models of chemical transport processes through the skin for
    transdermal drug delivery
    ([www.sandia.gov/geobio](http://www.sandia.gov/geobio))

-   Perform numerical simulations and analytical analyses of problems
    related to environmental restoration and nuclear waste management

-   Predict flow and transport of groundwater and contaminants in
    heterogeneous and fractured porous media in thermally perturbed
    systems
    ([**[http://me.unm.edu/\~cliff/thermo.html]{.smallcaps}**](http://me.unm.edu/~cliff/thermo.html))

-   Validate mathematical models of heat and mass transfer processes in
    porous media through combined experimental and numerical studies

Berkeley Environmental Restoration Center (BERC) - University of
California at Berkeley 8/89-5/93

*Research Assistant:* Investigated the recovery of volatile hydrocarbons
from porous media during a soil decontamination process known as soil
vapor extraction. Incorporated theoretical modeling and experimentation
in the analysis of liquid and gas phase transport mechanisms. Developed
exact and numerical solutions to multi-component, multi-phase transport
models. Designed one and two-dimensional flow visualization experiments
for qualitative and quantitative validation of models.

Teaching and Leadership Experience

Adjunct Professor - Department of Mechanical Engineering, University of
New Mexico, Albuquerque, New Mexico
([**[http://me.unm.edu/\~cliff/]{.smallcaps}**](http://me.unm.edu/~cliff/))

Teach undergraduate courses on a part-time basis in Mechanical
Engineering in areas including thermal-fluid sciences, dynamics, and
engineering analysis. Prepare homework, lectures, exams, and projects
for the students and use innovative methods to create an interactive,
dynamic classroom environment. Consistently receive high praise,
feedback, and evaluations from the students. 8/96-Present.

*Awards:* Nominated one of five "Outstanding Professors" in the science
and engineering departments at the University of New Mexico by student
scholars in the NASA Training Project. 4/97

Professional Conference Session Chair/Organizer - ASME, AIChE, ASCE, AGU

*Session Chair/Organizer:* Led several professional conference sessions
on multiphase, non-isothermal flow and contaminant transport in porous
media. ASME/AIChE 1995 National Heat Transfer Conference, Portland, OR;
ASCE International High-Level Radioactive Waste Management Conference
(1995, 1996, 1998, 2001); AGU Winter Annual Meeting (1999).

Toastmasters International - Albuquerque, New Mexico

*President:* Organized, managed, and led weekly meetings for a club
whose mission is to maintain and improve its members' public speaking
skills through speeches, contests, and workshops. Assisted in organizing
district conferences held in Albuquerque. 7/94-12/95\
*VP Education:* Monitor educational progress of members and organize
weekly schedules and events. 1/95-7/96\
*Awards:* 1st Place in Humorous Speech Contest (10/95)--District 23 (New
Mexico and El Paso); 3rd Place in Humorous Speech Contest (6/96)--Region
III (8 states)

Guest Lecturer - University of California at Berkeley

Presented lectures on topics involving heat and mass transfer in porous
media for Mechanical and Civil Engineering Departments at the University
of California at Berkeley. 9/92-5/93.

Other Experience

McDonnell Douglas Corporation - St. Louis, MO

*Summer Intern:* Created FORTRAN programs, ran software, and wrote
instructional reports pertaining to fatigue analysis of F/A-18 Hornet
and Blue Angel aircraft. 5/88-8/88

General Motors Corporation - GM Technical Center, Warren, MI

*Summer Intern:* Compared various methods of modeling the deflection of
three-legged joints in automobile frames. Derived theoretical models and
compared various finite element models using MSC/NASTRAN. Tested
structural response of a three-legged joint, compared results to those
of models, and documented findings into a GM report. 5/87-8/87

Computer and Analytic Skills

• Proficient in 3-D modeling and analyses (SolidWorks, CosmosWorks,
Cosmos FloWorks, CFdesign, FLUENT)

• Extensive FORTRAN programming experience and working knowledge in C++

• Knowledgeable in HTML programming and WWW page creation

• Familiar with Macintosh, PC, and UNIX operating systems

• Proficient with many computer applications including word processors,
spreadsheets, graphic displays, CAD packages, and FORTRAN software

• Knowledge of numerical methods, including finite difference and finite
element methods for heat transfer and fluid dynamics applications, and
probabilistic methods for risk-analysis modeling

• Experienced in the use of gas chromatography to analyze atmospheric
and subsurface environmental pollutants

Professional Organizations

• American Society of Mechanical Engineers

• American Geophysical Union

Honors

• Employee Recognition Award for Performance Testing of Trace Explosives
Detectors for Vehicle Screening Team, Sandia National Laboratories, 2005

• Employee Recognition Award for In-Situ Chemiresistor Team, Sandia
National Laboratories, 2003

• Employee Recognition Award for Outstanding Individual Leadership,
Sandia National Laboratories, 2001

• Outstanding Professor Award, University of New Mexico, 1997

• Dean\'s Honor List, University of Wisconsin--Madison, 1985-89

• Bergenthal Scholarship, University of Wisconsin--Madison, 1988

• McDonnell Douglas Scholarship, St. Louis, MO, 1988

• Elected member of Tau Beta Pi, Pi Tau Sigma, Phi Kappa Phi, and Golden
Key National Honor Society, University of Wisconsin--Madison, 1986-89

Personal References

• Ray Finley, Manager, Geohydrology Department, Sandia National
Laboratories, P.O. Box 5800, Albuquerque, NM 87185. Tel. (505) 844-4462,
e-mail: refinle@sandia.gov

• Peter B. Davies, Director, Geoscience and Environment Center, Sandia
National Laboratories, P.O. Box 5800, Albuquerque, NM 87185. Tel. (505)
844-3072, e-mail: <pbdavie@sandia.gov>

• Gudmundur "Bo" Bodvarsson, Director, Earth Sciences Division, Lawrence
Berkeley National Laboratory, Berkeley, CA, 94720. Tel: (510) 486-4789,
e-mail: <gsbodvarsson@lbl.gov>

• Professor John Wilson, Professor of Earth and Environmental Science,
New Mexico Tech, Socorro, NM 87801. Tel: (505) 835-5308, e-mail:
<jwilson@nmt.edu>

Publications

## Hydrologic Flow and Contaminant Transport

Walton, Z.P., [C.K. Ho]{.underline}, and M.D. Schuhen, Testing of Flow
Through Stress Corrosion Cracks, in Proceedings of the 2006
International High-Level Radioactive Waste Management Conference, Las
Vegas, NV, April 30-May 3, 2006.

Altman, S.J., A. Forsberg, W. Peplinski, and [C.K. Ho]{.underline},
Testing the Concept of Drift Shadow with X-Ray Absorption Imaging, in
Proceedings of the 2006 International High-Level Radioactive Waste
Management Conference, Las Vegas, NV, April 30-May 3, 2006.

Sleep, B.E., C.D. Shackelford, J.C. Parker, [C.K. Ho]{.underline}, et
al., 2006, "Chapter 2 Modeling of Fluid Transport through Barriers," in
*Barrier Systems for Environmental Contaminant, Containment, and
Treatment*, edited by C.C. Chien, et al., pp. 71-132, CRC Press, Taylor
& Francis, Boca Raton.

[Ho, C.K.]{.underline}, 2004, Asperity-Induced Episodic Percolation in
Channels and Fractures, *J. Porous Media*, 7(3), 155-164,
SAND2001-1612J.

[Ho, C.K.]{.underline}, L.K. McGrath, and J.L. Wright, 2003, Survey of
Subsurface Treatment Technologies for Environmental Restoration Sites at
Sandia National Laboratories, New Mexico, SAND2003-2880, Sandia National
Laboratories, Albuquerque, NM.

[Ho, C.K.]{.underline}, 2001, A semianalytical solution for steady
infiltration in unsaturated fractured rock, *Water Resources Research*,
37(8), 2285-2289.

[Ho, C.K.]{.underline}, 2001, "Dual Porosity vs. Dual Permeability
Models of Matrix Diffusion in Fractured Rock," SAND 2000-2336C, in
Proceedings of the 9^th^ International High-Level Radioactive Waste
Management Conference, Las Vegas, NV, April 29-May 2, 2001.

[Ho, C.K.]{.underline}, 2000, "Modeling Fast Flow Paths in Unsaturated
Fractured Rock," *Vadose Zone Science and Technology Solutions*, B.B.
Looney and R.W. Falta eds, Battelle Press, Columbus, OH, pp. 785-791.

[Ho, C.K.]{.underline} and S.W. Webb, 1998, Capillary Barrier
Performance in Heterogeneous Porous Media, *Water Resources Research*,
vol. 34, no. 4, pp. 603-609.

McCurley, R., [C.K. Ho]{.underline}, and M.L. Wilson "Analysis of
Infiltration Uncertainty," SAND2000-2688C, in Proceedings of the 9^th^
International High-Level Radioactive Waste Management Conference, Las
Vegas, NV, April 29-May 2, 2001.

Wilson, M.L. and [C.K. Ho]{.underline}, "Abstraction of Seepage Into
Drifts," SAND2000-2389C, in Proceedings of the 9^th^ International
High-Level Radioactive Waste Management Conference, Las Vegas, NV, April
29-May 2, 2001.

[Ho, C.K.]{.underline} and M.L. Wilson, Calculation of Discrete Fracture
Flow Paths in Dual Continuum Models, in *Proceedings of the
International Symposium on Dynamics of Fluids in Fractured Rocks*:
Concepts and Recent Advances, *LBNL-42718*, Berkeley, CA, 2/99.

[Ho, C.K.]{.underline} and M.L. Wilson, Calculation of Discrete Fracture
Flow Paths Using Dual-Continuum Models, SAND97-2709C, *Proceedings of
the International High-Level Radioactive Waste Management Conference*,
5/98.

[Ho, C.K.]{.underline} and S.W. Webb, The Effects of Heterogeneities and
Wavy Interfaces on Capillary Barrier Performance, SAND98-0859A, in
*Proceedings of the TOUGH98 Workshop*, 5/98.

[Ho, C.K.]{.underline}, S.J. Altman, S.A. McKenna, B.W. Arnold, 1996
Unsaturated Zone Flow Modeling for GWTT-95, SAND95-2497C.

Altman, S.J., B.W. Arnold, R.W. Barnard, G.E. Barr, [C.K.
Ho]{.underline}, S.A. McKenna, R.R. Eaton, 1996, Flow Calculations for
Yucca Mountain Groundwater Travel Time (GWTT-95), SAND96-0819.

Altman, S.J., B.W. Arnold, [C.K. Ho]{.underline}, and S.A. McKenna,
1996, Sensitivity Studies of Unsaturated Groundwater Flow Modeling for
Groundwater Travel Time Calculations at Yucca Mountain, NV,
SAND95-2541C.

[Ho, C.K.]{.underline}, S.J. Altman, B.W. Arnold, 1995, Alternative
Conceptual Models and Codes for Unsaturated Flow in Fractured Tuff:
Preliminary Assessments for GWTT-95, SAND95-1546.

Eaton, R.R., [C.K. Ho]{.underline}, R.J. Glass, M.J. Nicholl, and B. W.
Arnold, 1996, Three-Dimensional Modeling of Flow through Fractured Tuff
at Fran Ridge, SAND95-1896.

[Ho, C.K.]{.underline}, "Assessing Alternative Conceptual Models of
Fracture Flow", SAND95-0324C, in proceedings of the TOUGH2 Workshop
\'95, Lawrence Berkeley Laboratory, March 20-22, 1995.

Ho, C.K. and M.L. Wilson, "Assessing Alternative Conceptual Models of
Fracture Flow, SAND94-2663A, presented at the International High-Level
Radioactive Waste Management Conference, Las Vegas, NV, May 1-5, 1995.

[Ho, C.K.]{.underline}, "Multicomponent Three-Phase Equilibria,
SAND95-1063, June, 1995.

[Ho, C.K.]{.underline} 1994. Modeling Infiltration into a Tuff Matrix
from a Saturated Vertical Fracture, SAND93-3503C, presented at the 1994
International High-Level Radioactive Waste Management Conference, Las
Vegas, NV.

## Gas and Vapor Transport and Phase Change

[Ho, C.K.]{.underline}, 2000, "Scale-Dependent Mass Transfer During
SVE," *Vadose Zone Science and Technology Solutions*, B.B. Looney and
R.W. Falta eds., Battelle Press, Columbus, OH, pp. 1170-1176.

Gu, L., [C.K. Ho]{.underline}, O.A. Plumb, and S.W. Webb, Vapor
Diffusion in Partially Saturated Packed Beds, in *Proceedings of the
1999 ASME/JSME Joint Thermal Engineering Conference*, San Diego, CA,
3/99.

Webb, S.W. and [C.K. Ho]{.underline}, Enhanced Vapor-Phase Diffusion in
Porous Media LDRD Final Report, *SAND98-2772*, 12/98.

[Ho, C.K.]{.underline}, and S.W. Webb, 1998, Review of Porous Media
Enhanced Vapor-Phase Diffusion Mechanisms, Models, and Data--Does
Enhanced Vapor-Phase Diffusion Exist?, *Journal of Porous Media*, 1(1),
pp. 71-92.

[Ho, C.K.]{.underline}, 1998, Analytical Inverse Model for
Multicomponent Soil Vapor Extraction, *J. Environmental Engineering*, v.
124, no. 6, 504-509.

[Ho, C.K.]{.underline}, 1997, Evaporation of Pendant Water Droplets in
Fractures, *Water Resources Research*, Vol. 33, No. 12, pp. 2665-2671.

Gu, L., [C.K. Ho]{.underline}, O.A. Plumb, and S.W. Webb, 1998,
Diffusion with Condensation and Evaporation in Porous Media,
SAND98-0618C, *Proceedings of the 1998 Joint AIAA/ASME Thermophysics and
Heat Transfer Conference*, 6/98.

Webb, S.W. and [Ho, C.K.]{.underline}, Pore-Scale Modeling Using TOUGH2,
*Proceedings of the TOUGH98 Workshop*, SAND98-1976C, 5/98.

Webb, S.W. and [Ho, C.K.]{.underline}, Pore-Scale Modeling of Enhanced
Vapor Diffusion in Porous Media, SAND97-2013C, *Proceedings of the 1997
ASME International Mechanical Engineering Congress and Exposition*,
11/97.

[Ho, C.K.]{.underline}, "Numerical Simulations of Multicomponent
Evaporation and Gas-Phase Transport Experiments Using M2NOTS,
SAND95-0566C, in proceedings of the ASME/AIChE National Heat Transfer
Conference, Portland, OR, August 5-8, 1995.

Sobolik, S., [C.K. Ho]{.underline}, E. Dunn, T. Robey, W.
Cruz,"Sensitivity of Hydrological Performance Assessment Analyses to
Variations in Material Properties, Conceptual Models, and Ventilation
Models", SAND94-0779, 1/95.

[Ho, C.K.]{.underline}, E. Dunn, S. Sobolik, "Ventilation and
Vapor-Phase Transport Near the ESF Tunnel, SAND94-2658A, in proceedings
of the International High-Level Radioactive Waste Management Conference,
Las Vegas, NV, May 1-5, 1995.

[Ho, C.K.]{.underline} and K.S. Udell, 1995, Mass Transfer Limited
Drying of Porous Media Containing an Immobile Binary Liquid Mixture,
*Int. J. Heat Mass Transfer*, Vol. 38 No. 2, pp. 339-350.

[Ho, C.K.]{.underline}, S. -W. Liu, and K.S. Udell, 1994, Propagation of
Evaporation and Condensation Fronts During Multicomponent Soil Vapor
Extraction, *J. Contam. Hydrol.,* 16, pp. 381-401.

[Ho, C.K.]{.underline} and K.S. Udell, 1993. Mechanisms of
Multicomponent Evaporation During Soil Venting, ASME Multiphase
Transport in Porous Media, HTD-Vol. 265, pp. 83-91, presented at the
1993 ASME Winter Annual Meeting, New Orleans, LA.

[Ho, C.K.]{.underline} and K.S. Udell, 1992, An Experimental
Investigation of Air Venting of Volatile Liquid Hydrocarbon Mixtures
from Homogeneous and Heterogeneous Porous Media, *J. Contam. Hydrol.,*
11, 291-316.

## Heat Transfer and Coupled Processes

Birkholzer, J. and [C.K. Ho]{.underline}, A Monte-Carlo Analysis of
Episodic Preferential Flow into Superheated Fractured Rock, 2003, *J.
Hydrology*, 284(1-4), 151-173.

Birkholzer, J. and [C.K. Ho]{.underline}, A Systematic Study of Episodic
Localized Infiltration into Superheated Fractured Rock, SAND2002-2451A,
Geological Society of America 2002 Annual Meeting and Exposition,
October 27-30, 2002, Denver, CO.

Arnold, B.W., [C.K. Ho]{.underline}, and M.T. Itamura, "Effect of
Capillary Forces on Fluid Inclusion Formation in the Vadose Zone:
Implications For Geothermometry," SAND2000-2999C, in Proceedings of the
9^th^ International High-Level Radioactive Waste Management Conference,
Las Vegas, NV, April 29-May 2, 2001.

[Ho, C.K.]{.underline} and N.D. Francis, Coupled Thermo-Hydro-Mechanical
Simulations of the Potential Repository at Yucca Mountain, SAND97-2711C,
in *Proceedings of the International High-Level Radioactive Waste
Management Conference*, 5/98.

Itamura, M.T. and [C.K. Ho]{.underline}, Scaling Analysis of Repository
Heat Load for Reduced Dimensionality Models, SAND97-2830A, in
*Proceedings of the International High-Level Radioactive Waste
Management Conference*, 5/98.

[Ho et al.]{.underline}, 1997, The Effects of Infiltration on the
Thermohydrologic Behavior of the Potential Repository at Yucca Mountain,
SAND97-0098C, In Proceedings of the ASCE Fourth Congress on Computing in
Civil Engineering, Philadelphia, PA, June 16-18, pp. 387-394.

[Ho, C.K.]{.underline}, 1997, Models of Fracture-Matrix Interactions
During Multiphase Heat and Mass Flow in Unsaturated Fractured Porous
Media, SAND97-1198C, in Proceedings of the ASME Fluids Engineering
Division, FED-Vol. 244, pp. 401-412.

Francis, N.D., S.R. Sobolik, [C.K. Ho]{.underline}, R.R. Eaton, and D.
Preece, 1997, Pre-Experiment Thermal-Hydrological-Mechanical Analyses
for the ESF Heated Drift Test, SLTR97-0002, Sandia National Labs.

[Ho, C.K.]{.underline} and N.D. Francis, 1996, The Effects of
Conduction, Convection, and Radiation on the Thermodynamic Environment
Surrounding a Heat Generating Waste Package, SAND96-0032C, in
proceedings of 1996 National Heat Transfer Conference, ANS session on
Fundamental Aspects of Radioactive Waste Management, Houston, TX, Aug.
3-6.

[Ho, C.K.]{.underline}, Pre-Test Simulations of Laboratory-Scale Heater
Experiments in Tuff, SAND95-1905.

[Ho, C.K.]{.underline} and R.R. Eaton, 1995, TOUGH2 Model of the
G-Tunnel Heater Experiment, SAND94-2636A, in proceedings of the 1995
International High-Level Radioactive Waste Management Conference, Las
Vegas, NV, May 1-5.

[Ho, C.K.]{.underline} and R.R. Eaton, 1994, "Studies of
Thermohydrologic Flow Processes Using TOUGH2", SAND94-2011.

[Ho, C.K.]{.underline}, K. Maki, and R. J. Glass, 1994. Studies of
Non-Isothermal Flow in Saturated and Partially Saturated Porous Media,
SAND93-4045C, presented at the 1994 International High-Level Radioactive
Waste Management Conference, Las Vegas, NV.

[Ho, C.K.]{.underline}, K. Maki, and R. J. Glass, 1994. Experimental and
Numerical Investigations of Non-Isothermal Flow in Saturated and
Partially Saturated Porous Media, Sandia Report, SLTR93-0002.

## Performance Assessment Modeling for Waste Management

[Ho., C.K.]{.underline}, T.A. Goering, J.L. Peace, M.L. Miller, 2006,
Development of Probabilistic Fate and Transport Models for the Mixed
Waste Landfill at Sandia National Laboratories, SAND2005-7321C, in
Proceedings of the 2006 Waste Management Conference, Tucson, AZ, Feb. 26
-- Mar. 2, 2006.

[Ho., C.K.]{.underline}, T.A. Goering, J.L. Peace, M.L. Miller, 2005,
Probabilistic Performance-Assessment Modeling of the Mixed Waste
Landfill at Sandia National Laboratories, SAND2005-6888, Sandia National
Laboratories, Albuquerque, NM.

Peace, J.L. T.A. Goering, [C.K. Ho.,]{.underline} M.L. Miller, D.E.
Fate, 2005, Mixed Waste Landifll - Corrective Measures Implementation
Plan, 2005-7126 P, Sandia National Laboratories, Albuquerque, NM.

Knowlton, R.G., B.W. Arnold, N.-C. Tien, F.-L. Chang, L.-M. Chi, [C.K.
Ho]{.underline}, W.-S. Chuang, and H.-N. Jow, 2006, Performance
Assessment Methodology and Preliminary Results for Low-Level Radioactive
Waste Disposal in Taiwan, in proceedings of the 2006 Waste Management
Conference, Tucson, AZ, February 26 -- March 2, 2006.

Peterson, C. and [C.K. Ho]{.underline}, 2005, Evaluation of FRAMES for
Probabilistic Risk-Based Simulation of Long-Term Cover Systems, in
proceedings of the Waste Management Symposium, SAND2005-0501C, February
27-March 3, 2005, Tucson, AZ.

Bodvarsson, G.S., [C.K. Ho]{.underline}, and B.A. Robinson (editors),
2003, *Journal of Contaminant Hydrology Special Issue on Yucca
Mountain*, Vol. 62-63, 750 pp.

Robinson, B.A., C. Li, and [C.K. Ho]{.underline}, 2003, Performance
Assessment Model Development and Analysis of Radionuclide Transport in
the Unsaturated Zone, Yucca Mountain, Nevada, *Journal of Contaminant
Hydrology*, Vol. 62, pp. 249-268. SAND2002-2359J.

[Ho, C.K.]{.underline}, B.W. Arnold, J.R. Cochran, R.Y. Taira, and M.
Pelton, 2004, A Probabilistic Model and Software Tool for Evaluating the
Long-Term Performance of Landfill Covers, *Environmental Modelling and
Software Journal*, 19(1), 63-88.

[Ho, C.K.]{.underline}, B.W. Arnold, J.R. Cochran, and R.Y. Taira, 2002,
Development of a Risk-Based Probabilistic Performance-Assessment Method
for Long-Term Cover Systems--2^nd^ Edition, SAND2002-3131, Sandia
National Laboratories, Albuquerque, NM.

[Ho, C.K.]{.underline}, B.W. Arnold, J.R. Cochran, and R.Y. Taira,
Risk-Based Performance Assessments for Long-Term Cover Systems:
Sensitivity and Uncertainty Analyses, SAND2002-1951C, In Proceedings of
the Spectrum 2002 Conference, Reno, NV, August 4-8, 2002, ISBN:
0-89448-664-0.

Wilson, M.W. and [C.K. Ho]{.underline}, TSPA Model For The Yucca
Mountain Unsaturated Zone, in proceedings of the Waste Management
Symposium, SAND2001-3800C, Tucson AZ, February 24-28, 2002.

[Ho, C.K.]{.underline}, B.W. Arnold, J.R. Cochran, S.W. Webb, and R.Y.
Taira, Development of a Risk-Based Performance-Assessment Method for
Long-Term Cover Systems---Application to the Monticello Mill Tailings
Repository, SAND2001-3032, Sandia National Laboratories, Albuquerque,
NM, 2001.

[Ho, C.K.]{.underline}, et al., "Stochastic Simulations for Risk-Based
Performance Assessments of Long-Term Cover Systems," SAND2001-1132C, In
Proceedings of the 2001 Containment and Remediation Conference, Orlando,
FL, June 10-13, 2001.

[Ho, C.K.]{.underline}, R. Baca, S. Conrad, G. Smith, L. Shyr, T.
Wheeler, 1999, Stochastic Parameter Development for PORFLOW Simulations
of the Hanford AX Tank Farm, *SAND98-2880*, Sandia National
Laboratories, 1/99.

Westrich, H., J. Krumhansl, P. Zhang, H. Anderson, M. Molecke, C. Ho, B.
Dwyer, G. McKeen, Stabilization of In-Tank Resdiual Wastes and
External-Tank Soil Contamination for the Hanford Tank Closure Program:
Applications to the AX Tank Farm, *SAND98-2445*, 11/98.

[Ho, C.K.]{.underline} and B.A. Robinson, Flow and Transport
Calculations of Yucca Mountain Using TOUGH2 and FEHM, SAND97-2710C,
*Proceedings of the International High-Level Radioactive Waste
Management Conference*, 5/98.

Stockman, H., J. Krumhansl, [C.K. Ho]{.underline}, V. McConnell, "The
Valles Natural Analogue Project, NUREG/CR-6221, SAND94-0650, December,
1994.

## Yucca Mountain Reports Supporting the License Application

Contributing author of "Total System Performance Assessment for the Site
Recommendation," 2000, TDR-WIS-PA-000001 Rev 00, ICN 01,
MOL.20001220.0045.

[Ho, C.K.]{.underline}, 2000, "Abstraction of Flow Fields for TSPA,"
Analysis and Model Report, ANL-NBS-HS-000023 Rev 00, ICN 01.

[Ho, C.K.]{.underline}, 2000, "Abstraction of Flow Fields for RIP,"
Analysis and Model Report, ANL-NBS-HS-000023 Rev 00, ICN 00.
(http://www.ymp.gov/documents/amr/index.html)

[Ho, C.K.]{.underline}, 2000, "Analysis of Base-Case Particle Tracking
for Base-Case Flow Fields," Analysis and Model Report, ANL-NBS-HS-000024
Rev 00.

Pan, L. and [C.K. Ho]{.underline}, 2000, "Analysis Comparing
Advective-Dispersive Transport Solution to Particle Tracking" Analysis
and Model Report, ANL-NBS-HS-000001 Rev 00.

Co-author and co-editor of "Unsaturated Zone Flow and Transport Model
Process Model Report," TDR-NBS-HS-000002 Rev 0.

Contributing author of "Viability Assessment of a Repository at Yucca
Mountain---Volume 3: Total System Performance Assessment," 1998,
DOE/RW-0508.

[Ho, C.K.]{.underline} et al., 1998, "Total System performance
Assessment-Viability Assessment (TSPA-VA) Analyses Technical Basis
Document---Chapter 2 Unsaturated Zone Hydrology Model,"
B00000000-01717-4301-00002 Rev 01.

[Ho, C.K.]{.underline} et al., 1996, "Thermo-Hydrologic Modeling of the
Potential Repository at Yucca Mountain Including the Effects of
Heterogeneities and Alternative Conceptual Models of Fractured Porous
Media," Rev.00 Level 3 Milestone T6536, MOL.19961219.0269, 186 pages.

## Microchemical Sensors

K.A. Peterson, K.D. Patel, [C.K. Ho]{.underline}, B.R. Rohrer, C.D.
Nordquist, B.D. Wroblewski, K.B. Pfeifer, LTCC Microsystems and
Microsystem Packaging and Integration Applications, in proceedings of
the 2006 International Conference on Ceramic Interconnect and Ceramic
Microsystems Technologies, Denver, CO, April 25-27, 2006.

[Ho, C.K.]{.underline}, K.A. Peterson, L.K. McGrath, T.S. Turner, 2006,
Development of LTCC Smart Channels for Integrated Chemical, Temperature,
and Flow Sensing, SAND2006-1169C, in proceedings of the 2006
International Conference on Ceramic Interconnect and Ceramic
Microsystems Technologies, Denver, CO, April 25-27, 2006.

Peterson, K.A., K. D. Patel, [C. K. Ho]{.underline}, S. B. Rohde, C. D.
Nordquist, C. A. Walker, B. D. Wroblewski, and M. Okandan, 2005, Novel
Microsystem Applications with New Techniques in Low-Temperature Co-Fired
Ceramics, *Int. Journal of Applied Ceramic Technology*, 2 (5) 371--389.

[Ho, C.K.]{.underline} (Guest Editor), 2005, Special Issue on Sensors
for Environmental Monitoring, *Sensors*, 5, 1-117.

[Ho, C.K.]{.underline}, A. Robinson, D.R. Miller, and M.J. Davis, 2005,
Overview of Sensors and Needs for Environmental Monitoring, *Sensors*,
5, 4-37.

[Ho, C.K.]{.underline} and J.L. Wright, 2005, Integrated Chemiresistor
Sensors with Preconcentrators for Monitoring Volatile Organic Compounds
in Water, SAND2005-1037C, in proceedings of the ASCE 2005 World Water
and Environmental Resources Congress, Anchorage, AK, May 15-19, 2005.

[Ho, C.K.]{.underline}, L.K. McGrath, and J.L. Wright, 2005, FY04 Field
Evaluations of an In-Situ Chemiresistor Sensor at Edwards Air Force
Base, CA, SAND2005-0336, Sandia National Laboratories, Albuquerque, NM.

Davis, C.E., [C.K. Ho]{.underline}, R.C. Hughes, and M.L. Thomas, 2005,
Enhanced Detection of m-Xylene Using a Preconcentrator with a
Chemiresistor Sensor, *Sensors and Actuators B: Chemical*, 104(2),
207-216.

Hua, L, Pitt, W.G., McGrath, L.K., and [Ho, C.K.]{.underline}, 2004,
Modeling chemiresistor sensors 1: Conductivity model, 2004, in
proceedings of the AIChE Annual Meeting, Nov. 7-12 2004, Austin, TX,
p.9725-9732.

Hua, L, Pitt, W.G., McGrath, L.K., and [Ho, C.K.]{.underline}, 2004,
Modeling chemiresistor sensors 1: Conductivity model, 2004, in
proceedings of the AIChE Annual Meeting, Nov. 7-12 2004, Austin, TX,
p.9725-9732.

Wang, Y., H. Gao, R.C. Hughes, [C.K. Ho]{.underline}, M.L. Thomas, J.L.
Wright, L.K. McGrath, C.E. Davis, and P.I. Pohl, 2004, Potential
Application of Microsensor Technology in Radioactive Waste Management
with Emphasis on Headspace Gas Detection, SAND2004-4813, LDRD Final
Report, Sandia National Laboratories, Albuquerque, NM.

[Ho, C.K.]{.underline}, A. Robinson, D.R. Miller, and M.J. Davis, 2004,
Sensors for Environmental Monitoring and Long-Term Environmental
Stewardship, SAND2004-4596, Albuquerque, NM, 54 pp.

Lei, H., W.G. Pitt, L.K. McGrath, and [C.K. Ho]{.underline}, 2004,
Resistivity measurements of carbon--polymer composites in chemical
sensors: impact of carbon concentration and geometry, *Sensors and
Actuators B: Chemical*, 101(1-2), 122--132.

[Ho, C.K.]{.underline}, 2004, In-Situ Microchemical Sensors for
Long-Term Monitoring of Subsurface Contaminants, SAND2003-4519C, in
proceedings of the *Waste Management Conference,* Tucson, AZ, February
29-March 4, 2004.

[Ho, C.K.]{.underline}, L.K. McGrath, C.E. Davis, M.L. Thomas, J.L.
Wright, A.S. Kooser, and R.C. Hughes, 2003, Chemiresistor Microsensors
for In-Situ Monitoring of Volatile Organic Compounds: Final LDRD Report,
SAND2003-3410, Sandia National Laboratories, Albuquerque, NM.

[Ho, C.K.]{.underline}, E.R. Lindgren, K.S. Rawlinson, L.K. McGrath, and
J.L. Wright, 2003, Development of a surface acoustic wave sensor for
in-situ monitoring of volatile organic compounds, *Sensors*, 3, 236-247.

[Ho, C.K.]{.underline}, 2003, Development of an In-Situ Chemiresistor
Sensor for Continuous Monitoring of Volatile Organic Compounds in Air,
Soil, and Water, SAND2003-1709A, abstract presented at FAME (Frontiers
in Assessment Methods for the Environment) Symposium, Minneapolis, MN,
August 10-13, 2003.

Rivera, D., M.K. Alam, C.E. Davis, and [C.K. Ho]{.underline}, 2003,
Characterization of the ability of polymeric chemiresistor arrays to
quantitate trichloroethylene using partial least squares (PLS): effects
of experimental design, humidity, and temperature, *Sensors and
Actuators B: Chemical*, v. 92, no. 1-2, 110-120, SAND2002-3253J.

[Ho, C.K.]{.underline} and C.F. Lohrstorfer, Subsurface Monitoring of
TCE Using an In-Situ Chemiresistor Sensor, 2003, *Groundwater Monitoring
and Remediation*, 23(4), 85-90.

[Ho, C.K.]{.underline}, J. Wright, L.K. McGrath, E.R. Lindgren, K.S.
Rawlinson, and C.F. Lohrstorfer, 2003, Field Demonstrations of
Chemiresistor and Surface Acoustic Wave Microchemical Sensors at the
Nevada Test Site, SAND2003-0799, Albuquerque, NM.

[Ho, C.K.]{.underline}, and R.C. Hughes, 2002, *In-Situ* Chemiresistor
Sensor Package for Real-Time Detection of Volatile Organic Compounds in
Soil and Groundwater, 2002, *Sensors*, 2, 23-34.

[Ho, C.K.]{.underline} and C.F. Lohrstorfer, 2002, Demonstration of
Chemiresistor Microsensors for Subsurface Monitoring of Volatile Organic
Compounds, SAND2002-1968C, In Proceedings of the Spectrum 2002
Conference, Reno, NV, August 4-8, 2002, ISBN: 0-89448-664-0.

[Ho, C.K.]{.underline}, L.K. McGrath, and J. May, 2002, FY02 Field
Evaluations of an In-Situ Chemiresistor at Edwards Air Force Base, CA,
SAND2002-4135, Albuquerque, NM.

Davis, C.E. R.C. Hughes, M.L. Thomas, [C.K. Ho]{.underline}, Data
Analysis Methods for Real-Time VOC Chemiresistor Sensor, SAND2002-0591C,
in proceedings of the Sensors Expo Conference, San Jose, CA, May 20-23,
2002, 179-191.

[Ho, C.K.]{.underline} et al., "Microchemical Sensors for In Situ
Monitoring and Characterization of Volatile Contaminants,"
SAND2001-1093C, In Proceedings of the 2001 Containment and Remediation
Conference, Orlando, FL, June 10-13, 2001.

[Ho, C.K.]{.underline}, M.T. Itamura, M. Kelley, R.C. Hughes, 2001,
Review of Chemical Sensors for In-Situ Monitoring of Volatile
Contaminants, SAND2001-0643, Sandia National Laboratories, Albuquerque,
NM.

## Bio-Engineering

[Ho, C.K.]{.underline}, 2004, Probabilistic Modeling of Percutaneous
Absorption for Risk-Based Exposure Assessments and Transdermal Drug
Delivery, SAND2004-2710J, *Statistical Methodology,* Vol. 1/1-2, 47-69.

[Ho, C.K.]{.underline}, 2003, A Stochastic Model of Chemical Transport
through Human Skin, SAND2003-1521C, published in proceedings of the
*ASME International Congress and Exposition*, Bio-Heat and Mass Transfer
Session, Washington, D.C., Nov. 16-21, 2003.

Cygan, R.T., [C.K. Ho]{.underline}, and C.J. Weiss, 2002, Linking the
Geosciences to Emerging Bio-Engineering Technologies, SAND2002-3690,
Sandia National Laboratories, Albuquerque, NM.

## Explosives Detection

Parmeter, J., [C.K. Ho]{.underline}, et al., Studies of Trace Explosives
Contamination on Vehicles and Trace Plumes Emanating from Moving
Vehicles that Contain Explosives, in Proceedings of the Insititute of
Nuclear Materials Management 47^th^ Annual Meeting, July 16-20, 2006,
Nashville, TN.

Hannum, D.W., A.O. Falase, [C.K. Ho]{.underline}, and J.E. Parmeter,
2005, Investigations of the Detection of Trace Contamination of Ammonium
Nitrate and Ammonium Nitrate/Fuel Oil on a Vehicle, SAND2005-5874,
Unclassified Controlled Nuclear Information, Sandia National
Laboratories, Albuquerque, NM.

Phelan, J., [C.K. Ho]{.underline}, L. DeChant, P. J. Rodacy, J. Lee, D.
Hannum, M. Mitchell, and J. Parmeter, 2005, Detecting Explosives in
Moving Vehicles, SAND2005-6155, Unclassified Controlled Nuclear
Information, Sandia National Laboratories, Albuquerque, NM.

[Ho, C.K.]{.underline}, 2005, Modeling Evaporation of Explosives from
Stationary Surfaces and Moving Vehicles, SAND2005-0394, Sandia National
Laboratories, Albuquerque, NM.

[Ho, C.K.]{.underline}, A.O. Falase, D.W. Hannum, J.E. Parmeter, 2004,
Field and Laboratory Investigations of Factors that Impact the
Performance of Trace Explosives Detectors for Vehicle Screening,
SAND2004-4748, Sandia National Laboratories, Albuquerque, NM.

[Ho, C.K.]{.underline}, A.O. Falase, D.W. Hannum, J.E. Parmeter, 2004,
Evaluation of TSA Test Kits for Verification of IONSCAN 400-Series Trace
Explosives Detectors, SAND2004-4827, Sandia National Laboratories,
Albuquerque, NM.

## Miscellaneous

Robinson, A. and [C.K. Ho]{.underline}, 2005, Investigation of Issues
Regarding Colorimetric Stickers for Fruit: Final Report for RediRipe
LLC, SAND2005-5175, Sandia National Laboratories NM Small Business
Assistance Program, Albuquerque, NM.

[Ho, C.K.]{.underline} and T.A. Bibeau, 2005, Finite Element Stress
Analyses of Ties for Masonry Applications: Final Report for The Arquin
Corporation, SAND2005-5877, Sandia National Laboratories, Albuquerque,
NM.

## Invited Presentations

[Ho, C.K.]{.underline}, Continuous Monitoring of Volatile Organic
Compounds in the Subsurface Using an In-Situ Chemiresistor Sensor,
invited presentation to be made at the 2004 North American Environmental
Field Conference, Tampa Bay, FL, January 13-16, 2004.

[Ho, C.K.]{.underline}, From Chemiresistor Sensors to Real-Time
Subsurface Hydrocarbon Monitoring Systems: Lessons Learned,
SAND2002-4095A, invited presentation at the National American Chemical
Society Meeting, New Orleans, LA, March 23-27, 2003.

[Ho, C.K.]{.underline}, L.K. McGrath, and J. May, 2003, In-Situ
Chemiresistor Sensors for Monitoring Subsurface Contaminants, invited
presentation at the 2003 CUPA Conference, Anaheim, CA, 2/5/03.

Invited presentation to Senator Bingaman on microsensors for real-time
water-quality monitoring, Cooperative Monitoring Center, Albuquerque
(2/19/01).

Invited presentation to Sandia Leadership Council on microsensors for
real-time soil- and water-quality monitoring, Albuquerque (4/02).

Invited presentation on unsaturated-zone flow and traceability of
TSPA-VA to Nuclear Regulatory Commission and Nuclear Waste Technical
Review Board (3/98 & 4/98).

Invited presentations on enhanced vapor diffusion at New Mexico Tech
(9/23/96), Washington State University (10/4/96), and Intera (10/10/96).

## Others

Ho., C.K., L.K. McGrath, and J. Wright, Field Tests of a Chemiresistor
Sensor for In-Situ Monitoring of Vapor-Phase Contaminants,
SAND2003-0328A, presented at the 2003 EGS-AGU-EGU Joint Assembly, Nice,
France, April 6-11, 2003.

Rivera, D.A., M.K. Alam, C.K.Ho, C.E. Davis, R.J. Simonson, and W.G.
Yelton, Augmented Least Squares Techniques and Hybrid Least Squares
Techniques for Calibration Maintenance of Chemiresistor and Surface
Acoustic Wave Sensors, SAND2003-0784A, Pittsburg Analytical Conference,
Orlando, FL, March 10-13, 2003.

Hughes, R.C., C.K. Ho, and C.E. Davis, Chemiresistor Microsensor Arrays
for Detecting Volatile Organic Chemicals, abstract presented at
Seventeenth International Forum on Process Analytical Chemistry,
Phoenix, AZ, January 21-24, 2003.

Rivera, D.A., M.K. Alam, C.K. Ho, and C.E. Davis, Application of
Multivariate Calibration Methods to Chemiresistor Array Data,
SAND2002-2971A, abstract presented at the Federation of Applied
Chemistry and Spectroscopy Society Meeting, October 13-17, 2002,
Providence, RI.

McLain, A.A and C.K. Ho, "Evaluation Of Diffusion In Porous Media Using
A Novel Detection Method," abstract/presentation at Geological Society
of America Annual Meeting, Boston, MA, Nov. 5-8, 2001, SAND2002-2203A,
Vol. 33, No. 6.

Ho, C.K., "Asperity-Induced Episodic Percolation through Unsaturated
Fractured Rock," abstract/presentation at Geological Society of America
Annual Meeting, Boston, MA, Nov. 5-8, 2001, SAND2001-2319A, Vol. 33, No.
6.

McLain, A.A and C.K. Ho, Impact of Moisture Content and Grain Size on
Hydrocarbon Diffusion in Porous Media, SAND2001-3081A, abstract/poster
presented at the AGU 2001 Fall Meeting, San Francisco, CA, December
10-14, 2001.

Arnold, B.W., C.K. Ho et al., "Probabilistic Assessment of Radon
Transport at the Monticello, Utah Uranium Mill Tailings Disposal Site,
SAND2001-2758A, abstract/poster presented at the AGU 2001 Fall Meeting,
San Francisco, CA, December 10-14, 2001.

Ho, C.K. and J. Houseworth, Vadose-Zone Modeling Issues in YMP
Performance Assessment, SAND99-0428A, abstract in *Proceedings of the
AGU 1999 Spring Meeting*, Boston, MA, 6/99.

Silverman, T.S., J.L. Wilson, S.W. Webb, C.K.Ho, A Pore-Scale Study of
Enhanced Vapor Diffusion in Porous Media, SAND99-0756A, abstract in
*Proceedings of the AGU 1999 Spring Meeting*, Boston, MA, 6/99.

Burck, P.W., C.K. Ho, S.J. Altman, Transient Infiltration Study at Yucca
Mountain, NV, abstract in *Proceedings of the AGU 1998 Fall Meeting*,
San Fracisco, CA, 12/98.

Robey, T.H. and C.K. Ho, Comparison of Unsaturated Flow Codes and
Conceptual Models for Fractured, Heterogeneous, Porous Media,
SAND94-1901A, presented at the SIAM Conference, San Antonio, TX,
February 8-10, 1995.

Ostensen, R.W., R. Beauheim, C.K. Ho, P.B. Davies, Differentiating
matrix diffusion from other physical-retardation processes in a
single-well injection-withdrawal tracer test, SAND94-1420A, abstract
presented at the Chapman Conference, Burlington, VT, September, 1994.

## Intellectual Property

U.S. Patent No. US 7,003,405, [Ho, C.K.]{.underline}, "Characterization
Methods for Real-Time In-Situ Sensing of Volatile Contaminants,"
SD-6894, Feb. 21, 2006.

SD-6976, [Ho, C.K.]{.underline}, M.W. Jenkins, R.C. Hughes, Waterproof
microsensor for in-situ monitoring of volatile compounds, Sandia
National Laboratories Patent Application filed 5/2002.

SD-6894, [Ho, C.K.]{.underline}, Method for characterizing subsurface
volatile contaminants, Sandia National Laboratories Patent Application
filed 10/24/02.

SD-7097, [Ho, C.K.]{.underline}, Automated monitoring and remediation
system for volatile subsurface contaminants using in-situ sensors,
Sandia National Laboratories Patent Application filed 10/24/02.

SD-7307, [Ho, C.K.]{.underline}, Portable vapor diffusion coefficient
meter, Sandia National Laboratories Patent Application filed 10/24/02.

SD-7095, [Ho, C.K.]{.underline}, Circular chemiresistors for
microchemical sensors, Sandia National Laboratories Patent Application
filed 1/23/03.

SD-7372, [Ho, C.K.]{.underline}, Confined cavity chemiresistors for
microchemical sensors, Sandia National Laboratories Patent Application
filed 1/23/03.

SD-7373, [Ho, C.K.]{.underline}, Multi-pin chemiresistors for
microchemical sensors, Sandia National Laboratories Patent Application
filed 1/23/03.

SD-7542, Kooser, A.S., [C.K. Ho]{.underline}, and L.K. McGrath,
Molecular-imprinted chemiresistor sensors for chemical and biological
detection, Sandia National Laboratories Technical Advance filed 8/19/03.

SD-7830, [Ho, C.K.]{.underline} and K.A. Peterson, Smart LTCC Channels
with Integrated Chemical, Temperature, and Flow Sensors, Sandia National
Laboratories Technical Advance, 9/29/04.

SD-7850, Wang, Y., H. Gao, and [C.K. Ho,]{.underline} Techniques for
Improvement of Sensing Polymer Films, Sandia National Laboratories
Technical Advance, 9/30/05.

Cooperative Research and Development Agreement (#1669.0) between Sandia
National Labs and Lighthouse Worldwide Solutions, Development of
Chemiresistor Sensor Technology for Real-Time Monitoring of Volatile
Organic Compounds During Hazardous Waste Site Remediation, Project
Accomplishments Summary, 12/03.

[Ho, C.K.]{.underline}, Intellectual Property Management for Projects
with Commercially Viable Products, white paper posted on web fileshare
(https://wfsprod01.sandia.gov/groups/srn-uscitizens/documents/other/wfs048113.pdf),
1/02.