Conca, J., D. G. Levitt, P. R. Heller, T. J. Mockler, and M. J. Sully (1998) "Direct UFA Measurements of Unsaturated Hydraulic Conductivity, Comparisons to van Genuchten/Mualem Estimations, and Applications to Recharge Mapping in Arid Regions," In Characterization and Measurement of the Hydraulic Properties of Unsaturated Porous Media, M. Th. van Genuchten, F. J. Leij and L. Wu (eds.), University of CA, Riverside (in press).

Conca, J. L., M. Apted, W. Zhou, R. Arthur, and J. Kessler (1998) "Flow Barrier System for Long Term High-Level Waste Isolation: Experimental Results," Nuclear Technologies, vol. 124, p.1-13.

Zhou, W., J. L. Conca, J. L. and J. Kessler (1998) "Numerical Simulation of Percolation Box Experiments on the Performance of a Richards Barrier," Proceedings of the Tenth International High-Level Radioactive Waste Management Conference, American Nuclear Society, La Grange Park, Illinois, vol. 9, p. 474-476.

Conca, J. L. and J. V. Wright (1998) "The UFA Method for Rapid, Direct Measurements of Unsaturated Soil Transport Properties", Australian J. of Soil Research, vol. 36, p. 291-315.

Martin, W. J., G. Whelan and J. L. Conca (1998) "Integration of Sorption and Risk Assessment in Waste Disposal: an example using 14C," Risk Analysis Journal (in press).

Conca, J. L., B. A. Robinson, I. R. Triay And G. Y. Bussod (1997) "Direct Characterization Of Transport Parameters In Near-Field And Engineered Backfill/Invert Materials Needed For Waste Isolation Strategies," Scientific Basis for Nuclear Waste Management XX, Materials Research Society Symposium Proceedings, vol.465, p. 951-962.

Chen, X.-B., J. V. Wright, J. L. Conca, and L. M. Peurrung (1997) "Effects of pH on Heavy Metal Sorption on Mineral Apatite", Environmental Science and Technology , vol. 31, p.624-631.

Chen, X.-B., J. V. Wright, J. L. Conca, and L. M. Peurrung (1997) "Evaluation of Heavy Metal Remediation Using Mineral Apatite", Water, Air and Soil Pollution, vol. 98, p. 57-78.

Fancher, J. D., V. J. Rohay, B. K. Lamb and J. L. Conca (1997) "Subsurface Volatiule Organic Compound Vapor-Phase Rebound and Implications for Vapor Extraction", Environmental Science and Technology, (in press)

ASTM Standard Test Procedure (J. L. Conca, 1997, in final review) "Test Method for Determining Hydraulic Conductivity in porous Media by Open-Flow Centrifugation," Approved by ASTM D18.21 Subcommittee on Ground Water.

I. R. Triay, A. Meijer, J. L. Conca, K. S. Kung, R. S. Rundberg and B. A. Strietelmeier (1997) Summary and Synthesis Report on Radionuclide Retardation for the Yucca Mountain Site Characterization Project, R. C. Eckhardt (ed), Los Alamos National Laboratory Technical Report LA-13262-MS, Los Alamos, NM, 286 p.

Conca, J. L. (1996) "New technology for measuring transport in soil and rock," Environmental Waste Reporter, vol. 1, p. 30-31.

Conca, J. L. (1996) "New technology for measuring transport in soil and rock," Environmental Waste Reporter, vol. 1, p. 30-31.

Conca, J. L. and J. V. Wright (1996) "The UFA Method for Rapid, Direct Measurements of Unsaturated Soil Transport Properties", Australian Journal of Soil Research (in press).

Conca, J. L. and Triay, I. R. (1996) Validity of Batch Sorption Data to Describe Selenium Transport through Unsaturated Tuff, Technical Report LA-12957-MS, Los Alamos National Laboratory, Los Alamos, NM, 8 p.

Moody, T. E. and J. L. Conca (1996) Permeable Barrier Materials for Strontium Immobilization, Bechtel Hanford Technical Report BHI-00857, Bechtel Hanford, Inc., Richland, Washington.

Nelson, P. and J. L. Conca, (1996) Present-Day Porosity and Permeability in Lacustrine Strata and Fallout Tuffs, U. S. Geol. Survey Open File Report, USGS, Reston, Virginia (in press).

Stephens, D. B. (1996). "Vadose Zone Hydrology." CRC Press. Lewis Publishers, New York.

Khaleel, R., J. F. Relyea, and J. L. Conca (1995) "Estimation of van Genuchten-Mualem Relationships to Estimate Unsaturated Hydraulic Conductivity at Low Water Contents", Water Resources Research, vol. 31, p. 2659-2668.

Conca, J. L. and J. V. Wright (1995) "A New Technology for Determining Transport Parameters in All Porous Media", in Proceedings of the American Nuclear Society Topical Meeting on Mathematics and Computations, Reactor Physics, and Environmental Analyses, American Nuclear Society, La Grange Park, Illinois, vol. 1, p. 165-180.

Conca, J. L. and J. V. Wright (1995) "Find Transport Data Faster: A New Technology for Determining Transport Properties in Soil and Other Porous Media", Soil and Groundwater Cleanup, December, p. 14-26.

Lindenmeier, C. W., R. J. Serne, J. L. Conca, A. T. Owen, and M. I. Wood (1995) Solid Waste Leach Characteristic and Contaminant-Sediment Interactions, Volume 2: Contaminant Transport Under Unsaturated Conditions, Technical Report PNL-10722, Pacific Northwest Laboratory, Richland, Washington.

Moody, Timothy E. and Judith Wright. 1995. Adsorption Isotherms: North Carolina Apatite Induced Precipitation of Lead, Zinc, Manganese and Cadmium from the Bunker Hill 4000 Soil, Technical Report BHI 00197, Bechtel Hanford, Inc., Richland, WA, 21 p.

Wright, J. V., et al. (1995) In Situ Immobilization of Heavy metals in Apatite Mineral Formulations, Technical Report to the Strategic Environmental Rsearch and Development Program, Department of Defense, Pacific Northwest Laboratory, Richland, WA, 81 p.

Zhou, W., J. Conca, R. Arthur and M. J. Apted (1995) Analysis and Confirmation of Robust Performance for the Flow-Diversion Barrier System within the Yucca Mountain Site, Technical Report IED-9408, INTERA Sciences Inc., Environmental Division, Denver, Colorado.

Khaleel, R., J. F. Relyea, and J. L. Conca (1995) "Evaluation of van Genuchten-Mualem Relationships to Estimate Unsaturated Hydraulic Conductivity at Low Water Contents", Westinghouse Hanford Company Technical Report WHC-SA-2915-FP, Richland, WA.

Fredrickson, J. K., F. J. Brockman, B. N. Bjornstad, P. E. Long, S. W. Li, J. P. McKinley, J. L. Conca, T. L. Kieft, and D. L. Balkwill (1994) "Microbiological Characteristics of Pristine and Contaminated Deep Vadose Sediments", Geomicrobio. Journal, vol. 11, p. 95 - 107.

Conca, J. L. and I. R. Triay (1994) "Selenite Transport in Unsaturated Tuff from Yucca Mountain," Proceedings of the Fifth International High-Level Radioactive Waste Management Conference, American Nuclear Society, La Grange Park, Illinois, vol. 4, p. 2175-2182.

Conca, J. L. and J. V. Wright (1994) "The UFA Technology for Characterization of In Situ Barrier Materials", in Proceedings of the 33rd Hanford Symposium on Health and the Environment, Department of Energy, Pasco, Washington, vol.2, p. 1179-1193.

Wright, J. V. and J. L. Conca (1994) "Direct Measurements of Transport Properties are Essential for Site Characterization", in Proceedings of the Spectrum '94 International Topical Meeting on Nuclear and Waste Management, Amer. Nuc. Soc., La Grange Park, Il, vol. 1, 438-446.

Wright, J. V., J. L. Conca, and X. Chen (1994) Hydrostratigraphy and Recharge Distributions from Direct Measurements of Hydraulic Conductivity Using the UFA Method, PNL Technical Report PNL9424, Pacific Northwest Laboratory, Richland, WA, 150 p.

Serne, R. J., J. L. Conca, V. L. LeGore, K. J. Cantrell, C. W. Lindenmeier, J. A. Campbell, J. E. Amonette, and M. I. Wood (1993) Solid Waste Leach Characteristic and Contaminant-Sediment Interactions, Volume 1: Batch Leach and Adsorption, and Sediment Characterization, Technical Report PNL-8889, Pacific Northwest Laboratory, Richland, Washington.

Wright, J. V., J. M. Leather, and J. L. Conca (1993) "The UFA? Method for Site Characterization and Remediation", in Proceedings of the Environmental Remediation '93 Conference, Augusta, GA, vol. 2, p. 819-826.

Arthur, R. C., M. J. Apted and J. L. Conca (1993) "Dealing with Uncertainty in the Chemical Environment in Bentonite Backfill", Scientific Basis for Nuclear Waste Management XVI, Materials Research Society Symposium Proceedings, vol. 294, p. 389-394.

Conca, J. L. (1993) Measurement of Unsaturated Hydrtaulic Conductivity and Chemical Transport in Yucca Mountain Tuff, Technical Report LA-12596-MS, Los Alamos National Laboratory, Los Alamos, NM, 28 p.

Conca, J. L. and J. V. Wright (1993) "Centrifuge Technology for Vadose Zone Transport Measurements", in Vadose Zone Modeling, WHC-MR-0420, Westinghouse Hanford Company, Richland, WA, p. 153-168.

Conca, J. L., M. J. Apted and R. C. Arthur (1993) "Aqueous Diffusion in Repository and Backfill Environments", Scientific Basis for Nuclear Waste Management XVI, Materials Research Society Symposium Proceedings, vol. 294, p. 395-402.

Conca, J. L., M. J. Apted and R. C. Arthur (1993) "Direct Determination of Transport Properties in Repository Materials", Scientific Basis for Nuclear Waste Management XVI, Materials Research Society Symposium Proceedings, vol. 294, p. 839-844.

Conca, J. L. and J. V. Wright (1992) "Flow and Diffusion in Unsaturated Gravel, Soil and Whole Rock", Applied Hydrogeology, vol. 1, p. 5-24.

Conca, J. L. and J. V. Wright (1992) "Direct Determinations of Unsaturated Flow and Transport", Proceedings of the 12th Annual Hydrology Days Conference, Fort Collins, CO, p. 103-116.

Conca, J. L. and J. V. Wright (1992) "A New Technology for Direct Measurements of Unsaturated Transport", Proceedings of the Nuclear and Hazardous Waste Management Spectrum '92 Meeting, American Nuclear Society, vol. 2, p. 1546-1555.

Conca, J. L. (1992) "Near-Field Transport Processes", SKB Technical Report 9159, Swedish Nuclear Fuel and Waste Management Company, Stockholm, p. 90.

Conca, J. L. (1991) "Transport Parameters in Bentonite and Candidate Repository Host Rocks", Transactions of the American Nuclear Society, vol. 64, p. 205-206.

Conca, J. L. and Wright, J. V. (1991) "Aqueous Diffusion Coefficients in Unsaturated Materials", Scientific Basis for Nuclear Waste Management XIV, Materials Research Society Symposium Proceedings, vol. 212, p. 879-884.

Conca, J. L., Ashida, T. and Sato, H. (1991) "Apparent and Simple Diffusion Coefficients in Compacted Bentonite", Proceedings of the Second International High-Level Radioactive Waste Mgmt Conference, Amer. Nuclear Soc., La Grange Park, Illinois, vol. 2, p. 1382-1389.

Conca, J. L. (1990) "Experimental Determination of Unsaturated Diffusion Coefficients in Paintbrush Tuff Rubble Backfill", Proceedings of the First International High-Level Radioactive Waste Management Conference, American Nuclear Society, La Grange Park, Illinois, vol. 1, p. 394-401.

Conca, J. L. and Wright, J. V. (1990) "Diffusion Coefficients in Gravel under Unsaturated Conditions", Water Resources Research, vol. 26, p. 1055-1066.

Wright, Judith (1990) "Diffusion Coefficients and Hydraulic Conductivity in Unsaturated Hanford Soils and Sediments." In Proc. of the First International High-Level Radioactive Waste Mgmt Conf., ed. Steve Stowe. Amer. Soc. Eng., New York , 2:835-842.

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