Publications

Employees and designated associates of Envirologic, Inc. have published many publically available publications and presentations and have assisted in the production of other scientific papers and material.

Publications:  

  1. Davis, P., Rives, D., and S.P. Pozdniakov, 2010; Decision Support Process Developed in Support of Soil Gas Monitoring at LANL MDAs. Consultant's report to Los Alamos National Laboratories.
  2. Larson, T., Heikoop, J., Perkins, G., Longmire, P., Davis, P., Rearick, M., Fessenden, J., and A. Chrystal, in press; Differentiating Multiple Sources of Nitrate using Dual Isotope Systematics with Uncertainty Analysis; Chemical Geology.
  3. Davis, P., Pozdniakov, S. P., Kuvaev, Fogleman, W., and D. Rives, 2010; Transient Model Calibration of the San Juan Basin Groundwater Model. Consultant's Report to the US Department of Justice and the Bureau of Indian Affairs.
  4. Crystal, A., Davis, P., Syme, J., Heikoop, J., Fessenden-Rahn, J., Larson, T., Longmire, P., Perkins, G., Rearick, M., and S. Hagerty, 2010, Probabilistically Solving For Complex Groundwater Mixing Using Dual Isotopes Of Nitrate; Presented at the Fall 2010 American Geophysical Union Meeting.
  5. Davis, P., and Syme, J., 2010, Development and Testing of Mixing Models for Stable Isotope Analysis; Consultant's Report to Los Alamos National Laboratories
  6. Kazak E.S., Pozdniakov S.P. Simulation of in-situ iron removal test for the groundwater, Moscow State University Geological Bulletin, N6 2010, pp 68-77
  7. Kazak E. S. and S. P Moscow University Geology Bulletin, 2010, Vol. 65, No. 6, pp. 399-405. Allerton Press, Inc., 2010
  8. Pozdnyakova I.A., Galitskaja I.V., Toms L.S. Assessment of Hydrogeochemical Hazard and Risk in the Urbanized Territories // Global Groundwater Resources and Management. Selected Papers from The 33rd International Geological Congress, Scientific Publishers (India). Jodhpur, 2010. P. 477-496.
  9. Pozdnyakova I.A., Putilina V.S., Galitskaja I.V., Yuganova T.I. Water-rock interaction and redox zones in aquifer at waste. Water-Rock Interaction-Birkle and Torres-Alvarado(eds).2010 Taylor& Francis Group, London, ISRN 978-0-415-60426-0. P.603-606
  10. Grinevsky S.O., Pozdniakov S.P. Simulation of regional-scale groundwater recharge and its change under transient climate conditions // Reliability in Groundwater Modeling. Managing Groundwater and Environment. Proceeding of the 7th International conference on calibration and reliability in groundwater modeling ModelCARE, 2009, Wuhan, China University Geosciences Press
  11. Davis, P., 2009; Prism (International inter comparison and harmonization project on Practical Illustration and Use of the Safety Case Concept in the Management of Near-Surface Disposal); presented at the International Workshop Provisional Programme, Demonstrating the safety and Licensing of Radioactive Waste Disposal, 14 December 2009, Cape Town, South Africa
  12. Rives D.E, Davis, P.A. and Fogleman B. 2009. "Estimation of Chromium Mass in Sandia and Mortandad Canyons" presented by EnviroLogic, Inc. to Los Alamos National Laboratory
  13. Davis, P., Kuveav, A., Pozdniakov, S., and I. Pozdniakov, 2009; On the Relation between Geologic and Hydrologic Units - Four Examples; Presented at the 2009 Meeting of the Espanola Technical Advisory Group Meeting.
  14. Pozdnyakova I.A., Galitskaja I.V., Toms L.S. Simulation of contaminant transport with risk contamination estimate // Calibration and Reliability in Groundwater Modeling. Managing Groundwater and Environment / Ed. Y. Wang. China University of Geosciences Press, 2009. P. 333-336.
  15. Environmental Management, Investigation, Research and Teaching Unit (UIDDGA: Unidad de Investigación Desarrollo y Docencia, Gestión Ambiental). 2008. Final Report Second Stage (Part I) “Loma de La Lata” case for A Geochemical and Analytical Vision to determine Hydrocarbon Spill Ages (in Spanish, original title: “Una Visión Geoquímica y Analítica para Establecer la Antigüedad de los Derrames de Hidrocarburos”) presented in REPSOL-YPF, Ensenada- Province of Buenos Aires, Argentina , May, 2008.
  16. UIDDGA. 2008. Final Report Second Stage (Part II) and Workplan for the Third Stage for A Geochemical and Analytical Vision to determine Hydrocarbon Spill Ages (in Spanish, original title: “Una Visión Geoquímica y Analítica para Establecer la Antigüedad de los Derrames de Hidrocarburos”) presented to REPSOL-YPF, Ensenada- Province of Buenos Aires, Argentina, May, 2008.
  17. Kaztman, D., et. al.; 2007; Fate And Transport Modeling Report For Chromium Contamination From Sandia Canyon; Los Alamos National Laboratory; LA-UR-07-6018
  18. Kaztman, D. et. al.; 2006; Mortandad Canyon Investigation Report; LAUR-06-6752
  19. Kuveau, A., Rives, D.E., Davis, P.A., 2006. Analysis of the Potential Hydraulic Impacts of Drilling Muds on Los Alamos National Laboratory Monitoring Wells. EnviroLogic, Inc. Peer Review Draft; August 9, 2006.
  20. Vesselinov, V., Birdsell, K., Davis, P., and D. Hollis, 2005; Risk-based decision Analysis for Groundwater Remediation and Monitoring: Uncertainty Assessment; Presented at MODELCARE 2005
  21. Hollis, D. and P. Davis, 2005; Los Alamos National Laboratory's Risk-Based Decision Analysis for Groundwater Remediation and Monitoring - Part 1, Uncertainty Management; Presented at MODELCARE 2005.
  22. Birdsell, K., Vesselinov, V., Davis, P., Hollis, D., Newman, B., and C. Echohawk, 2005; Analysis of Model Uncertainties to Support Risk-Based Decisions Regarding Groundwater Contamination; Presented at the 2005 American Geophysical Union Meeting.
  23. Birdsell, K., Vesselinov, V., Hollis, B., and P. Davis, 2005; Groundwater Pathways Analysis: Uncertainty Analysis of Contaminant Transport from Mortandad Canyon; Presented at the 2005 Meeting of the Espanola Basin Technical Advisory Group.
  24. Davis, P., 2005; Risk-Based Decision Support for the Evaluation of Remedial Alternatives, Characterization, and Monitoring - Obstacles to implementation; Invited Talk at the 2005 Theis Conference; Sedona, Arizona.
  25. Hollis, D., Davis, P. A., Birdsell, K., Vesselinov, V., Echohawk, J. C., Newman, B., Gard, M., Rives, D. E. & Pozdniakov, S. (2005). Decision analysis for addressing groundwater contaminants from the radioactive liquid waste treatment facility released into Mortandad Canyon. Los Alamos National Laboratories, LA-UR-05-6397.
  26. Davis, P., 2004; Risk-Based Decision Support for Safety Assessment, Characterization, and Monitoring; Presented to the International Atomic Energy's ASAM Group on February 9, 2004, Vienna, Austria.
  27. Zektser I.S., S P. Pozdniakov, M. Szpakiewicz and L. M. Rogachevskaya Regional assessment of groundwater vulnerability in the Snake river plain aquifer basin, USA, Geofésica Internacional (2004), Vol. 43, Num. 4, pp. 697-705
  28. Pozdniakov S.P and C.F. Tsang A self-consistent approach for calculating the effective hydraulic conductivity of a binary, heterogeneous medium, Water Res. Res. Vol 5, N4, 2004
  29. Kuvaev A.A. Pozdniakov S. P. Models of variable mineralization flow for liquid waste injection analysis. Moscow University Geological Bulletin, 2003,1, pp.36-43.
  30. Davis P., Pozdnyakov S., Kuvaev A., Fogleman W. Modeling Groundwaters of the San Juan Basin of Northwestern New Mexico. New Mexico Symposium on Hydrologic Modeling. August 12, 2003. Macey Center, New Mexico Tech.
  31. Shestakov V.M., Kuvaev A.A. Lekhov A.V Pozdniakov S. P. Rubalchenko. A I., Zubkov A.A. Davis P.A. and, Kalinina E.A, Flow and transport modeling of liquid radioactive waste injection using data from Siberian Chemical Plant Injection Site, Environmental Geology,Vol. 42 2-3 2002 pp.214-221.
  32. Shestakov V.M., Kuvaev A.A. Lekhov A.V Pozdniakov S. P. Rubalchenko. A I., Zubkov A.A. Davis P.A. and, Kalnina E.A, Flow and transport modeling of liquid radioactive waste injection using data from Siberian Chemical Plant Injection Site, Environmental Geology, 2002, Vol 42 N2-3.
  33. A. A. Kuvaev, S.P. Pozdniakov Numerical modeling of dense waste dispersion in a sand and clay aquifer. XXXI IAH Congress. Munich, Germany, 2001.
  34. Kuvaev A. A. Density convection in deep aquifers. Moscow University Geological Bulletin, 2000, N6 (in Russian).
  35. Popov V.G., Kuvaev A.A., Yakovlev Y.A. The influence of density induced flow on ground water formation in sedimentary basins. 31st International Geological Congress. Rio de Janeiro. 2000.
  36. Davis, P., Beyeler, W., and D. Moran, 2000; Evaluation of Sources of Water for the Eastern Lands of the Laguna Pueblo; Sandia National Laboratories Internal Report.
  37. Cochran, J., and others, 2000; Compliance Assessment Document for Transuranic Wastes in the Greater Confinement Disposal Boreholes at the Nevada Test Site, Volume 2 Performance Assessment, Sand Report.
  38. Pozdnyakova I.A. Numerical analysis of organic nitrate pollution transport in vadoze zone, Environmental Geosciences, 2000. N 4. 321-330 p.
  39. Shestakov, V., Davis, P., Kuvaev, A., Lekhov, A., Pozdniakov, S., Rybalchenko, A., Zubkov, A., Kalinina, E., 1999; Development of Flow and Transport Models of Liquid Radioactive Waste Injection Using Data from Siberian Chemical Plant Injection Site. Proceedings of the Joint Russian-American Hydrogeology Seminar. Berkeley, USA, November 1999.
  40. Hareland, W., Beyeler W., Brosseau, D., Davis, P., Fogleman, W., Kalinina, E., 1999; Test of NUREG-1549, Decision Methods for Dose Assessment to Comply with Radiological Criteria for License Termination, Draft Letter Report prepared for US NRC.
  41. Davis, P., Feeney, T., Hareland, W., Kalinina, E., and J. Cochran, 1999; Proposed Response To Public Comments On The Nuclear Regulatory Commission's Branch Technical Position on Performance Assessment; Draft sent to NRC for review.
  42. Djamalov R.G., Zlobina V.L. Ivayjva A.V., Kuvaev A.A. Investigation of the groundwater oxidation caused by an atmospheric precipitation. Moscow University Geological Bulletin, 1999, N5 (in Russian).
  43. Shestakov V.M., Kuvaev A.A. Lekhov A.V Pozdniakov S. P. Rubalchenko. A I., Zubkov A.A. Davis P.A. and, Kalinina E.A, Development of flow and transport models of liquid radioactive waste injection using data from Siberian Chemical Plant Injection Site. Fourth USA/CIS Joint Conference: Hydrologic Issues of 21st Century: Ecology, Environment and Human Health. Publ. American Institute of Hydrology 1999.
  44. Pozdniakov S. P. and C.F. Tsang, A semianalytical approach to spatial averaging of hydraulic conductivity in heterogeneous aquifers, Journal Hydrology, Vol. 216 N 1-2.1999, pp.78-98
  45. A.A.Kuvaev, Z.B. Hafi and N.V.Makarova Hydrodynamics of Groundwater Flow in Fractured Zones in the Salt Lake Basin (Republic of Khakassia, Southern Siberia). The fourth USA / CIS joint conference on Environmental Hydrology and Hydrogeology. The American Institute of Hydrology, San Francisco USA, November 1999, p 157-158.
  46. Beyeler, W., Brown, T., Hareland, W, Conrad, S., Olague, N., Brosseau, D., Kalinina, E., Gallegos, D., Davis, P., 1998; Review of Parameter Data for the NUREG/CR-5512 Residential Farmer Scenario and Probability Distributions for the DandD Parameter Analysis; Letter Report, prepared for US NRC.
  47. Pozdniakov S. P., Permeability and porosity of random fractured aquifer, Environmental Geosciences, 1998, N2. (in Russian).
  48. Pozdniakov S. P. and V. M. Shestakov, Analysis of groundwater discharge with a lumped- parameter model, using a case study from Tajikistan, Hydrogeology Journal, Vol. 6, N2 1998, pp. 226-232.
  49. Nikitin R.M., S. P. Pozdniakov and I. F. Fidelli, Groundwater environments of intermontane valleys in Middle Asia, Water Resources, 1998, N6 (in Russian).
  50. Kuvaev A. A. and Korvalju A.B. Experimental investigation of density convection in vertical column. Moscow University Geological Bulletin, 1997, N4 (in Russian).
  51. Davis, P. and others*, 1997; Draft Safety Guide on Safety Assessment for Predisposal Waste Management; International Atomic Energy Agency Safety Series No. 111-G-2.6. IAEA documents do not have listed authors.
    *This report was developed by a group of consultants including Mr. Davis.
  52. Davis, P., Feeney, T., Kalinina E., Ross, F., 1997; Lessons Learned from Participation in the International Atomic Energy Agency's Near-Surface Radioactive Waste Disposal Safety Assessment Reliability Study - NSARS, prepared for US NRC, NRC FIN A1764.
  53. A.A.Kuvaev Density convection in groundwater on different scales. Proceeding of joint Russian-American hydrogeology seminar, Berkeley, July, 1997. Editors: Tsang C. F., Mironenko V. A. and Pozdniakov S. P Berkeley 1997.
  54. Kuvaev A. A., Volohova E.V., Fidelli I.F. Investigation of industrial groundwater contamination in Vahsh Valley (Middle Asia). Moscow University Geological Bulletin, 1996, N2 (in Russian).
  55. Kuvaev A., Supper R., Kollmann W. Simulation von Kontaminationsereignissen durch geoelektrische Kartierung eingespeister Saiztrasser. Steirische Beitrage zur Rohstoff und Energieforschung. Amt der Steirischen Landesregierung. Abteilung fuer Wissenschaft und Forschung. Austria. Graz 1996. Heft U.S. 44-51.
  56. Rattan, D., Santucci, P., Davis, P., Hossain, S., Seitz R., Torres, C., Kalinina, E., 1996; Safety Assessment of Near Surface Radioactive Waste Disposal Facilities: Intercomparison Exercise Using Hydrogeological Data from a Real Site (Test Case 2); Second Report of NSARS, International Atomic Energy Agency, 1996.
  57. Rives, D. Transport analysis for "The Safety Analysis as a Regulatory Tool: A Case Study", presented by the "Ente Nacional Regulador Nuclear" from Argentina in the "Symposium on Experience in the Planning and Operation of Low Level Waste Disposal Facilities". OIEA, Viena, Austria, June 17-21 1996.
  58. Supper R., Kollmann W., Kuvaev A., Simulation of pollutant-emission using geoelectric mapping of the migration of an artificially infiltrated salt tracer. Calibration and reliability in groundwater modeling (Proceedings of the ModelCARE 96 Conference). IAHS Publ. 273. Verlag Heinz Heise GmbH & Co KG. Hannover, Germany. 1996. P. 395-405.
  59. Pozdniakov S. P. and V. M. Shestakov, One model of salt/fresh groundwater flow in the layered aquifer, Lawrence Berkeley Laboratory Reports, LBL-36774, UC-603, RAC-7, 1995.
  60. Davis, P.A., Ross, F., Kozak, M.W., Kalinina, E.A., and Feeney, T.A., 1995; NSARS Test Case 2c Summary Report; Report to the 4th NSARS Research Coordination Meeting, Keswick, UK, June, 1995.
  61. Pozdniakov S. P. and C.F. Tsang, Tracer transport of the doublet well system, Lawrence Berkeley Laboratory Reports, LBL-34468, UC-603, RAC-4, 1995.
  62. Kuvaev A.A. Numerical modeling of brine migration. IRC GAZPROM. Moscow, 1995 (in Russian).
  63. Kuvaev A. A. Numerical model of density convection in aquifer. Water Resources, 1995, N4 (in Russian).
  64. Supper R., Kuvaev A. Bericht über die Durchführung von Salztracerversuchen zur Bestimmung von Grundwasserparametern bei der Pumpbrunnenienheit S27 nahe der Brigittenauerbrücke. Geologische Bundesanstalt Wien. Wien, 1995.
  65. Mironenko V. A. and S. P. Pozdniakov, Assessment of efficiency of doublet well tracer tests by using numerical simulation, Environmental geosciences, 1995, N6. (in Russian)
  66. -Results of Test Case 1 on The Safety Assessment of Near-Surface Radioactive Waste Disposal Facilities. Contribution of the CNEA with the Brazilian National Commission of Nuclear Energy in the Technical Cooperation Agreement Brazil-Argentina. November 1994.
  67. Rives, D. E. "Fellowship Report on TC2C". Report done for the IAEA's fellowship about "Hydrogeological Analysis for the Safety Assessment of Near-Surface Radioactive Waste Disposal Systems", Sandia National Laboratories, June 1994.
  68. Rives, D. E. "First approach to the Conceptual Model Manager for surface water transport of radionuclides for the Sandia Environmental Decision Support System". May 1994.
  69. Kozak, M., Kalinina E., Feeney T., Rives D. "Evaluation of the NSARS Test Case 2b. A Report to the 3rd. NSARS Research Coordination Meeting. U.S. Nuclear Regulatory Commission / Sandia National Laboratories Working Group. Sevilla, España, April 1994.
  70. Siraky G. y D. E. Rives. "Progress Report and Results for the Test Case 2b" presented in the 3rd. NSARS Research Coordination Meeting IAEA, Seville, Spain, April 1994.
  71. Rives, D. E., 1993. Radionuclide Dispersion in Phreatic Aquifers Model (in Spanish, original title: "Modelo de Dispersión de Radionucleidos en Acuíferos Freáticos"). II Regional Congress of Radiologic and Nuclear Safety, Zacatecas, Mexico, November 1993.
  72. Siraky G., D. Rives, D. Tellería, 1993 Safety Assessment of Near-Surface Radioactive Waste Disposal Facilities (in Spanish, original title: "Evaluaciones de Seguridad de Sistemas Superficiales de Eliminación de Residuos Radiactivos"). II Regional Congress of Radiologic and Nuclear Safety, Zacatecas, Mexico, November 1993
  73. Siraky G. y D. Rives, 1993. Radioactive Waste Disposal: Radiological Consequences Analyses – MACRERRS: Results and Comparison with other Models (in Spanish, original title: "Eliminación de Residuos Radiactivos: Análisis de Consecuencias Radiológicas - MACRERRSS: Resultados y Comparación con otros modelos"). II Regional Congress of Radiologic and Nuclear Safety, Zacatecas, Mexico, November 1993.
  74. Rives, D., E. Palacios y G. Siraky, 1993. Radiological Consequence Analyses of Radioactive Waste Disposal in the Ezeiza Atomic Center Area (in Spanish, original title: "Análisis de Consecuencias Radiológicas de la Eliminación de Residuos Radiactivos en el Área del Centro Atómico Ezeiza"). IV Argentine Congress of Radioprotection. Argentine Society of Radioprotection. Mendoza, October 1993.
  75. Siraky G., D. Tellería, D. Rives, H. Bruno, L. Boutet, F. Spano, O. Pardo, 1993. Safety Assessment of Near-Surface Radioactive Waste Disposal Facilities – Progress Report (in Spanish, original title: "Evaluaciones de Seguridad de Sistemas de Eliminación de Residuos Radiactivos en Superficie - Informe de Progreso") CNEA - INFO 0074/93.
  76. Siraky G. y D. Rives, "Progress Report and Results for the Test Case 2a", presented in the 2nd NSARS Research Coordination Meeting, NSARS program of the IAEA, Augusta Georgia USA, October 1992.
  77. Rives D., G. Siraky, D. Telleréa, "Progress Report and Results of the Test Case 1. Addendum". Sent as a collaboration to the CRP of the IAEA on NSARS. June 1992.
  78. Siraky G, D. Telleréa, H. Bruno, L. Boutet, F. Spano, D. Rives, y O. Pardo. "Progress Report and Results of the Test Case 1" Sent as a collaboration to the CRP of the IAEA on NSARS. March 1992.
  79. Pozdniakov S. P. and S. L. Stepanishev Specific yield determination by the volume-balance method during pumping out an unconfined aquifer, Moscow University Geological Bulletin, 1992, Vol. 47, N1.
  80. Pozdniakov S. P. and I. F. Fidelli, Studies of groundwater budget in intermontane valley with the help of mathematical modeling, Moscow University Geological Bulletin, 1992, Vol. 47, N4. Pp64-73
  81. Davis, P. A., Olague, N. E., and Goodrich, M. T., 1992; Application of a Validation Strategy to Darcy's Experiment, Advances in Water Resources, V. 15
  82. Zimmerman, D. A., Bonano, E. J., Davis, P. A., Harlan, C. P., and Chu, M. S. Y., 1992; Peer Review of the U.K. DOE Dry Run 3 Exercise (A Trial Probabilistic Risk Assessment of a Hypothetical Nuclear Waste Repository at Harwell, Oxfordshire), Sandia National Laboratories, Albuquerque, New Mexico; SAND92 1945
  83. Kuvaev A. A. Numerical simulation of density convection in contaminated groundwater. Water Resources, 1992, N4 (in Russian).
  84. Kuvaev A. A., Koziritskaja M.E., Morkovkina I. A. Investigation of the nitrate-contamination in the Hanaka Valley with use of tritium-data. Water Resources, 1991, N5 (in Russian).
  85. Davis, P. A., Gallegos, D. P., Hake, T. M., Olague, N. E., Price, L. L., Piepho, M. G., Goodrich, M. T., and Lee, C. E., 1991; Comparison of Two Risk Assessment Methodologies for High Level Waste Disposal in Unsaturated Media, Sandia National Laboratories, Albuquerque, New Mexico; SAND90 0574
  86. Davis, P. A., Olague, N. E., and M. T. Goodrich, 1991, Approaches for the Validation of Models Used for Performance Assessment of High Level Nuclear Waste Repositories; NUREG/CR 5537 and SAND90 1575
  87. Davis, P. A., and M. T. Goodrich, 1991, A Proposed Strategy for the Validation of Ground Water Flow and Transport Models in Validation of Geosphere Flow and Transport Models, GEOVAL 1990, OECD, Paris, France
  88. Kerl, F. A., Heger, A. S., Gallegos, D. P., and P. A. Davis, 1991; Methodology to Obtain Expert Information About the Conceptual Model Development Process Used for Performance Assessment of Waste Management Sites, American Nuclear Society Annual Winter Meeting, San Francisco, CA
  89. Zimmerman, D. A., Hanson, R. T. and P. A. Davis, 1991; A Comparison of Parameter Estimation and Sensitivity Analysis Techniques and Their Impact on the Uncertainty in Ground Water Flow Model Predictions NUREG/CR 5522 and SAND90 0128
  90. Heger, A. S., Kerl, F. A., Gallegos, D. P., and P. A. Davis, 1991; Use of Probabilistic Networks in Quantification of Uncertainties in Development of Conceptual Models for Radioactive Waste Repositories, American Nuclear Society Annual Winter Meeting, San Francisco, CA
  91. Parsons, A.M. and P.A. Davis, 1991, A Proposed Methodology for Assessing Compliance with the RCRA Ground Water Monitoring Regulations, presented at the 1991 ASTM Symposium, San Diego, California.
  92. Kerl, F. A., Heger, A. S., Gallegos, D. P., and P. A. Davis, 1991, Use of Graphical Structures to Quantify and Propagate Uncertainty in Development of Conceptual Models, First Engineering Conference of Waste Management Technology, Technology Transfer, and Training, San Juan, Puerto Rico.
  93. Davis, P. A., Price, L. L., Wahi, K. K., Goodrich, M. T., Gallegos, D. P., Bonano, E. J., and Guzowski, R. V., 1990; Components of an Overall Performance Assessment Methodology; NUREG/CR 5256 and SAND88 3020
  94. Davis, P. A., Bonano, E.J., Wahi, K.K., and L.L. Price, 1990. Uncertainties Associated with Performance Assessment of High-Level Radioactive Waste Repositories, NUREG/CR-5211.
  95. Kuvaev A.A. Numerische Analyse der Grundwassertemperaturverteilung in einem Schettkegel. Zeitschrift fer angewandte Geologie, 1990, N1.
  96. Rives, D. E., Varni, M. R., y Usunoff E. J., 1990. Aquifer Digital Modeling. Part 1. General Concepts on Numerical Modeling and Part 2. Application Examples (in Spanish, original titles: "Modelación digital de acuíferos. Parte I: Nociones generales sobre métodos numéricos y Parte II: Ejemplos de Aplicación". I Conference of Science and Technique of the Argentine North-West (NOA). July 1990.
  97. Usunoff, E. J., Rives, D. E. y Varni M. R. 1990. Parameter Regionalization in Hydrology. Part I Conceptual Frame and Part II. Application Examples (in Spanish original titles: "Regionalización de variables en hidrología. Parte I: Marco conceptual y Parte II: Ejemplos de Aplicación". I Conference of Science and Technique of the Argentine North-West (NOA). July 1990.
  98. Varni, M. R., Usunoff, E. J. y Rives, D. E., Factor Analyses. 1990. Part I Conceptual Frame and Part II. Application Examples (in Spanish original titles: "Análisis de factores. Parte I. Marco conceptual y Parte II. Ejemplos de Aplicación"). I Conference of Science and Technique of the Argentine North-West (NOA). July 1990.
  99. Davis, P., and N.M. Coleman, 1989, Hydrogeologic Evaluation of a Ground-water Barrier at Hanford, Washington, Transactions of the American Geophysical Union, V.70, No.29, July 18, 1989.
  100. Davis, P., Beyeler, W. E., Logsdon, M., Coleman, N., and K. Brinster, 1989, Numerical Modeling of Ground Water Flow Systems in the Vicinity of the Reference Repository Location, Hanford Site, Washington, NUREG/CR 5089 and SAND88 0141
  101. Kuvaev A. A. and Shestakov V.M. Estimation of the groundwater-discharge using geothermic data. Water Resources, 1989, N6 (in Russian).
  102. Bonano, E. J., Davis, P. A., Bras, R. L., and P. K. Kitanidis, 1989, Methodology for Estimation Groundwater Travel Times at a Nuclear Waste Repository Using a Physically based Geostatistical Approach, in Geostatistics Volume 2, Kluwer Academic Publishers
  103. Bonano, E. J., Davis, P. A., Shipers, L. R, Brinster, K. F., Beyeler, W. E., Updegraff, C. D., Shepard, E. R., Tilton, L. M., and K. K. Wahi, 1989, Demonstration of a Performance Assessment Methodology for High Level Waste Disposal in Basalt Formations, NUREG/CR 4759 and SAND86 2325
  104. Rives, D. y G. Bianchi, 1989. Contaminant Dispersion Model for Surface Water (in Spanish original title:"Modelo de dispersión de un contaminante en un curso de agua"). Presented as the final work on the “Curso de Postgrado en Hidráulica Computacional”, March 1989.
  105. Davis, P. A., Beyeler, W. E., McCartin, T. J., Miller, R., and K. Brinster, 1988, NRC Model Simulations in Support of the Hydrologic Code Intercomparison Study (HYDROCOIN), NUREG 1249, Vol. 1
  106. Bonano, E. J., Davis, P. A., Bras, R. L., and P. K., Kitanidis, 1988; Methodology for Estimation of Ground Water Travel Times at a Nuclear Waste Repository Using a Geostatistical Approach; SAND87 2226c, Sandia National Laboratories, Albuquerque, New Mexico, presented at the Third International Geostatistics Congress, Avignon, France, September 5 9, 1988.
  107. Bonano, E. J., and P. A. Davis, 1988; Demonstration of a Performance Assessment Methodology for Nuclear Waste Isolation in Basalt Formations, SAND86 2125c, Sandia National Laboratories, Albuquerque, New Mexico, presented at Waste management 88, Tucson, Arizona, February 28 March 3, 1988.
  108. Bras, R. L., Kitanidis, P. K., Bonano, E. J., Davis, P. A., and L. M. Tilton, 1987; Ground Water Travel Time Calculations Using Conditional Simulation Geostatistics, SAND87 0003A, Sandia National Laboratories, Albuquerque, New Mexico, presented at the Mathematical Geologist of the United States 1987 meeting on Emerging Concepts.
  109. Nicolson, T. J., McCartin, T. J., Davis, P. A., and W. Beyeler, 1987, NRC Experiences in HYDROCOIN: An International Project for the Studying Ground Water Flow Modeling Strategies, presented at the Waste Management 87 Conference, Tucson, Arizona.
  110. Cole, C. R., Nicolson, T. J., Davis, P. A., and T. J. McCartin, 1987; Lessons Learned from the HYDROCOIN Experience, presented at the GEOVAL 87 Symposium, Stockholm, Sweden.
  111. Kuvaev A.A. Calibration of ground water flow model in the Jachsu valley using geothermic data, in: "Hydrogeological research in valleys"., edited by V. M. Shestakov, MSU Publ., Moscow, 1987 (in Russian).
  112. Davis, P., and R. Miller, 1987, Goodness of Fit Measures for Regional Model Calibration, presented at the May 1987 American Geophysical Union Meeting, Baltimore, Md.
  113. Davis, P., and W. Beyeler, 1987, Assessment of Particle Tracking Algorithms, presented at the May 1987 American Geophysical Union Meeting, Baltimore, Md.
  114. Davis, P. A., 1987; Validation of Performance Assessment Models used on High Level Waste Disposal with Insights from the GEOVAL 87 Symposium, invited presentation to the Water Science Advisory Board of the National Academy of Sciences, Woods Hole, Massachusetts.
  115. Rives, D. y L. Boffi, 1987. Drawing Potential Flow Networks using Computers (in Spanish, original title: "Trazado de Redes de Escurrimiento Potenciales mediante el uso de Computadoras"). Hydraulics Department, Engineer Faculty UNLP. Signature HB.78. June 1987.
  116. Pozdniakov S. P. and I. F. Fidelli, Analysis of ground water of alluvial fan discharge heterogeneity, Moscow University Geological Bulletin, 1986, Vol. 41, N4.
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  121. Tien, P., Nimick, F. B., Muller, A. B., Davis, P. A., Guzowski, R. V., Duda, L. E., and R. L. Hunter, 1982; Repository Site Data and Information in Bedded Salt: Palo Duro Basin, Texas; NUREG/CR 3129
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